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Message-ID: <20191012075819.GB2038614@kroah.com>
Date: Sat, 12 Oct 2019 09:58:19 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, Jiri Slaby <jslaby@...e.cz>
Subject: Re: Linux 4.19.79
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index e8ddf0ef232e..16607b178b47 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2503,8 +2503,8 @@
http://repo.or.cz/w/linux-2.6/mini2440.git
mitigations=
- [X86,PPC,S390] Control optional mitigations for CPU
- vulnerabilities. This is a set of curated,
+ [X86,PPC,S390,ARM64] Control optional mitigations for
+ CPU vulnerabilities. This is a set of curated,
arch-independent options, each of which is an
aggregation of existing arch-specific options.
@@ -2513,12 +2513,14 @@
improves system performance, but it may also
expose users to several CPU vulnerabilities.
Equivalent to: nopti [X86,PPC]
+ kpti=0 [ARM64]
nospectre_v1 [PPC]
nobp=0 [S390]
nospectre_v1 [X86]
- nospectre_v2 [X86,PPC,S390]
+ nospectre_v2 [X86,PPC,S390,ARM64]
spectre_v2_user=off [X86]
spec_store_bypass_disable=off [X86,PPC]
+ ssbd=force-off [ARM64]
l1tf=off [X86]
mds=off [X86]
@@ -2866,10 +2868,10 @@
(bounds check bypass). With this option data leaks
are possible in the system.
- nospectre_v2 [X86,PPC_FSL_BOOK3E] Disable all mitigations for the Spectre variant 2
- (indirect branch prediction) vulnerability. System may
- allow data leaks with this option, which is equivalent
- to spectre_v2=off.
+ nospectre_v2 [X86,PPC_FSL_BOOK3E,ARM64] Disable all mitigations for
+ the Spectre variant 2 (indirect branch prediction)
+ vulnerability. System may allow data leaks with this
+ option.
nospec_store_bypass_disable
[HW] Disable all mitigations for the Speculative Store Bypass vulnerability
diff --git a/Documentation/arm64/elf_hwcaps.txt b/Documentation/arm64/elf_hwcaps.txt
index d6aff2c5e9e2..6feaffe90e22 100644
--- a/Documentation/arm64/elf_hwcaps.txt
+++ b/Documentation/arm64/elf_hwcaps.txt
@@ -178,3 +178,7 @@ HWCAP_ILRCPC
HWCAP_FLAGM
Functionality implied by ID_AA64ISAR0_EL1.TS == 0b0001.
+
+HWCAP_SSBS
+
+ Functionality implied by ID_AA64PFR1_EL1.SSBS == 0b0010.
diff --git a/Makefile b/Makefile
index 440c5b5c4f4b..4d29c7370b46 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 19
-SUBLEVEL = 78
+SUBLEVEL = 79
EXTRAVERSION =
NAME = "People's Front"
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index e3ebece79617..51fe21f5d078 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -84,6 +84,7 @@ config ARM64
select GENERIC_CLOCKEVENTS
select GENERIC_CLOCKEVENTS_BROADCAST
select GENERIC_CPU_AUTOPROBE
+ select GENERIC_CPU_VULNERABILITIES
select GENERIC_EARLY_IOREMAP
select GENERIC_IDLE_POLL_SETUP
select GENERIC_IRQ_MULTI_HANDLER
diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h
index 25ce9056cf64..c3de0bbf0e9a 100644
--- a/arch/arm64/include/asm/cpucaps.h
+++ b/arch/arm64/include/asm/cpucaps.h
@@ -52,7 +52,8 @@
#define ARM64_MISMATCHED_CACHE_TYPE 31
#define ARM64_HAS_STAGE2_FWB 32
#define ARM64_WORKAROUND_1463225 33
+#define ARM64_SSBS 34
-#define ARM64_NCAPS 34
+#define ARM64_NCAPS 35
#endif /* __ASM_CPUCAPS_H */
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h
index 510f687d269a..dda6e5056810 100644
--- a/arch/arm64/include/asm/cpufeature.h
+++ b/arch/arm64/include/asm/cpufeature.h
@@ -525,11 +525,7 @@ static inline int arm64_get_ssbd_state(void)
#endif
}
-#ifdef CONFIG_ARM64_SSBD
void arm64_set_ssbd_mitigation(bool state);
-#else
-static inline void arm64_set_ssbd_mitigation(bool state) {}
-#endif
#endif /* __ASSEMBLY__ */
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 6abe4002945f..367b2e0b6d76 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -398,6 +398,8 @@ struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr);
DECLARE_PER_CPU(kvm_cpu_context_t, kvm_host_cpu_state);
+void __kvm_enable_ssbs(void);
+
static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr,
unsigned long hyp_stack_ptr,
unsigned long vector_ptr)
@@ -418,6 +420,15 @@ static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr,
*/
BUG_ON(!static_branch_likely(&arm64_const_caps_ready));
__kvm_call_hyp((void *)pgd_ptr, hyp_stack_ptr, vector_ptr, tpidr_el2);
+
+ /*
+ * Disabling SSBD on a non-VHE system requires us to enable SSBS
+ * at EL2.
+ */
+ if (!has_vhe() && this_cpu_has_cap(ARM64_SSBS) &&
+ arm64_get_ssbd_state() == ARM64_SSBD_FORCE_DISABLE) {
+ kvm_call_hyp(__kvm_enable_ssbs);
+ }
}
static inline bool kvm_arch_check_sve_has_vhe(void)
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index def5a5e807f0..773ea8e0e442 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -177,11 +177,25 @@ static inline void start_thread_common(struct pt_regs *regs, unsigned long pc)
regs->pc = pc;
}
+static inline void set_ssbs_bit(struct pt_regs *regs)
+{
+ regs->pstate |= PSR_SSBS_BIT;
+}
+
+static inline void set_compat_ssbs_bit(struct pt_regs *regs)
+{
+ regs->pstate |= PSR_AA32_SSBS_BIT;
+}
+
static inline void start_thread(struct pt_regs *regs, unsigned long pc,
unsigned long sp)
{
start_thread_common(regs, pc);
regs->pstate = PSR_MODE_EL0t;
+
+ if (arm64_get_ssbd_state() != ARM64_SSBD_FORCE_ENABLE)
+ set_ssbs_bit(regs);
+
regs->sp = sp;
}
@@ -198,6 +212,9 @@ static inline void compat_start_thread(struct pt_regs *regs, unsigned long pc,
regs->pstate |= PSR_AA32_E_BIT;
#endif
+ if (arm64_get_ssbd_state() != ARM64_SSBD_FORCE_ENABLE)
+ set_compat_ssbs_bit(regs);
+
regs->compat_sp = sp;
}
#endif
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
index 177b851ca6d9..6bc43889d11e 100644
--- a/arch/arm64/include/asm/ptrace.h
+++ b/arch/arm64/include/asm/ptrace.h
@@ -50,6 +50,7 @@
#define PSR_AA32_I_BIT 0x00000080
#define PSR_AA32_A_BIT 0x00000100
#define PSR_AA32_E_BIT 0x00000200
+#define PSR_AA32_SSBS_BIT 0x00800000
#define PSR_AA32_DIT_BIT 0x01000000
#define PSR_AA32_Q_BIT 0x08000000
#define PSR_AA32_V_BIT 0x10000000
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index c1470931b897..3091ae5975a3 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -86,11 +86,14 @@
#define REG_PSTATE_PAN_IMM sys_reg(0, 0, 4, 0, 4)
#define REG_PSTATE_UAO_IMM sys_reg(0, 0, 4, 0, 3)
+#define REG_PSTATE_SSBS_IMM sys_reg(0, 3, 4, 0, 1)
#define SET_PSTATE_PAN(x) __emit_inst(0xd5000000 | REG_PSTATE_PAN_IMM | \
(!!x)<<8 | 0x1f)
#define SET_PSTATE_UAO(x) __emit_inst(0xd5000000 | REG_PSTATE_UAO_IMM | \
(!!x)<<8 | 0x1f)
+#define SET_PSTATE_SSBS(x) __emit_inst(0xd5000000 | REG_PSTATE_SSBS_IMM | \
+ (!!x)<<8 | 0x1f)
#define SYS_DC_ISW sys_insn(1, 0, 7, 6, 2)
#define SYS_DC_CSW sys_insn(1, 0, 7, 10, 2)
@@ -419,6 +422,7 @@
#define SYS_ICH_LR15_EL2 __SYS__LR8_EL2(7)
/* Common SCTLR_ELx flags. */
+#define SCTLR_ELx_DSSBS (1UL << 44)
#define SCTLR_ELx_EE (1 << 25)
#define SCTLR_ELx_IESB (1 << 21)
#define SCTLR_ELx_WXN (1 << 19)
@@ -439,7 +443,7 @@
(1 << 10) | (1 << 13) | (1 << 14) | (1 << 15) | \
(1 << 17) | (1 << 20) | (1 << 24) | (1 << 26) | \
(1 << 27) | (1 << 30) | (1 << 31) | \
- (0xffffffffUL << 32))
+ (0xffffefffUL << 32))
#ifdef CONFIG_CPU_BIG_ENDIAN
#define ENDIAN_SET_EL2 SCTLR_ELx_EE
@@ -453,7 +457,7 @@
#define SCTLR_EL2_SET (SCTLR_ELx_IESB | ENDIAN_SET_EL2 | SCTLR_EL2_RES1)
#define SCTLR_EL2_CLEAR (SCTLR_ELx_M | SCTLR_ELx_A | SCTLR_ELx_C | \
SCTLR_ELx_SA | SCTLR_ELx_I | SCTLR_ELx_WXN | \
- ENDIAN_CLEAR_EL2 | SCTLR_EL2_RES0)
+ SCTLR_ELx_DSSBS | ENDIAN_CLEAR_EL2 | SCTLR_EL2_RES0)
#if (SCTLR_EL2_SET ^ SCTLR_EL2_CLEAR) != 0xffffffffffffffff
#error "Inconsistent SCTLR_EL2 set/clear bits"
@@ -477,7 +481,7 @@
(1 << 29))
#define SCTLR_EL1_RES0 ((1 << 6) | (1 << 10) | (1 << 13) | (1 << 17) | \
(1 << 27) | (1 << 30) | (1 << 31) | \
- (0xffffffffUL << 32))
+ (0xffffefffUL << 32))
#ifdef CONFIG_CPU_BIG_ENDIAN
#define ENDIAN_SET_EL1 (SCTLR_EL1_E0E | SCTLR_ELx_EE)
@@ -494,7 +498,7 @@
ENDIAN_SET_EL1 | SCTLR_EL1_UCI | SCTLR_EL1_RES1)
#define SCTLR_EL1_CLEAR (SCTLR_ELx_A | SCTLR_EL1_CP15BEN | SCTLR_EL1_ITD |\
SCTLR_EL1_UMA | SCTLR_ELx_WXN | ENDIAN_CLEAR_EL1 |\
- SCTLR_EL1_RES0)
+ SCTLR_ELx_DSSBS | SCTLR_EL1_RES0)
#if (SCTLR_EL1_SET ^ SCTLR_EL1_CLEAR) != 0xffffffffffffffff
#error "Inconsistent SCTLR_EL1 set/clear bits"
@@ -544,6 +548,13 @@
#define ID_AA64PFR0_EL0_64BIT_ONLY 0x1
#define ID_AA64PFR0_EL0_32BIT_64BIT 0x2
+/* id_aa64pfr1 */
+#define ID_AA64PFR1_SSBS_SHIFT 4
+
+#define ID_AA64PFR1_SSBS_PSTATE_NI 0
+#define ID_AA64PFR1_SSBS_PSTATE_ONLY 1
+#define ID_AA64PFR1_SSBS_PSTATE_INSNS 2
+
/* id_aa64mmfr0 */
#define ID_AA64MMFR0_TGRAN4_SHIFT 28
#define ID_AA64MMFR0_TGRAN64_SHIFT 24
diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h
index 17c65c8f33cb..2bcd6e4f3474 100644
--- a/arch/arm64/include/uapi/asm/hwcap.h
+++ b/arch/arm64/include/uapi/asm/hwcap.h
@@ -48,5 +48,6 @@
#define HWCAP_USCAT (1 << 25)
#define HWCAP_ILRCPC (1 << 26)
#define HWCAP_FLAGM (1 << 27)
+#define HWCAP_SSBS (1 << 28)
#endif /* _UAPI__ASM_HWCAP_H */
diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h
index 5dff8eccd17d..b0fd1d300154 100644
--- a/arch/arm64/include/uapi/asm/ptrace.h
+++ b/arch/arm64/include/uapi/asm/ptrace.h
@@ -46,6 +46,7 @@
#define PSR_I_BIT 0x00000080
#define PSR_A_BIT 0x00000100
#define PSR_D_BIT 0x00000200
+#define PSR_SSBS_BIT 0x00001000
#define PSR_PAN_BIT 0x00400000
#define PSR_UAO_BIT 0x00800000
#define PSR_V_BIT 0x10000000
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index dc6c535cbd13..9ccf16939d13 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -19,6 +19,7 @@
#include <linux/arm-smccc.h>
#include <linux/psci.h>
#include <linux/types.h>
+#include <linux/cpu.h>
#include <asm/cpu.h>
#include <asm/cputype.h>
#include <asm/cpufeature.h>
@@ -87,7 +88,6 @@ cpu_enable_trap_ctr_access(const struct arm64_cpu_capabilities *__unused)
atomic_t arm64_el2_vector_last_slot = ATOMIC_INIT(-1);
-#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
@@ -109,9 +109,9 @@ static void __copy_hyp_vect_bpi(int slot, const char *hyp_vecs_start,
__flush_icache_range((uintptr_t)dst, (uintptr_t)dst + SZ_2K);
}
-static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
- const char *hyp_vecs_start,
- const char *hyp_vecs_end)
+static void install_bp_hardening_cb(bp_hardening_cb_t fn,
+ const char *hyp_vecs_start,
+ const char *hyp_vecs_end)
{
static DEFINE_SPINLOCK(bp_lock);
int cpu, slot = -1;
@@ -138,7 +138,7 @@ static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
#define __smccc_workaround_1_smc_start NULL
#define __smccc_workaround_1_smc_end NULL
-static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
+static void install_bp_hardening_cb(bp_hardening_cb_t fn,
const char *hyp_vecs_start,
const char *hyp_vecs_end)
{
@@ -146,23 +146,6 @@ static void __install_bp_hardening_cb(bp_hardening_cb_t fn,
}
#endif /* CONFIG_KVM_INDIRECT_VECTORS */
-static void install_bp_hardening_cb(const struct arm64_cpu_capabilities *entry,
- bp_hardening_cb_t fn,
- const char *hyp_vecs_start,
- const char *hyp_vecs_end)
-{
- u64 pfr0;
-
- if (!entry->matches(entry, SCOPE_LOCAL_CPU))
- return;
-
- pfr0 = read_cpuid(ID_AA64PFR0_EL1);
- if (cpuid_feature_extract_unsigned_field(pfr0, ID_AA64PFR0_CSV2_SHIFT))
- return;
-
- __install_bp_hardening_cb(fn, hyp_vecs_start, hyp_vecs_end);
-}
-
#include <uapi/linux/psci.h>
#include <linux/arm-smccc.h>
#include <linux/psci.h>
@@ -189,60 +172,83 @@ static void qcom_link_stack_sanitization(void)
: "=&r" (tmp));
}
-static void
-enable_smccc_arch_workaround_1(const struct arm64_cpu_capabilities *entry)
+static bool __nospectre_v2;
+static int __init parse_nospectre_v2(char *str)
+{
+ __nospectre_v2 = true;
+ return 0;
+}
+early_param("nospectre_v2", parse_nospectre_v2);
+
+/*
+ * -1: No workaround
+ * 0: No workaround required
+ * 1: Workaround installed
+ */
+static int detect_harden_bp_fw(void)
{
bp_hardening_cb_t cb;
void *smccc_start, *smccc_end;
struct arm_smccc_res res;
u32 midr = read_cpuid_id();
- if (!entry->matches(entry, SCOPE_LOCAL_CPU))
- return;
-
if (psci_ops.smccc_version == SMCCC_VERSION_1_0)
- return;
+ return -1;
switch (psci_ops.conduit) {
case PSCI_CONDUIT_HVC:
arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
ARM_SMCCC_ARCH_WORKAROUND_1, &res);
- if ((int)res.a0 < 0)
- return;
- cb = call_hvc_arch_workaround_1;
- /* This is a guest, no need to patch KVM vectors */
- smccc_start = NULL;
- smccc_end = NULL;
+ switch ((int)res.a0) {
+ case 1:
+ /* Firmware says we're just fine */
+ return 0;
+ case 0:
+ cb = call_hvc_arch_workaround_1;
+ /* This is a guest, no need to patch KVM vectors */
+ smccc_start = NULL;
+ smccc_end = NULL;
+ break;
+ default:
+ return -1;
+ }
break;
case PSCI_CONDUIT_SMC:
arm_smccc_1_1_smc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
ARM_SMCCC_ARCH_WORKAROUND_1, &res);
- if ((int)res.a0 < 0)
- return;
- cb = call_smc_arch_workaround_1;
- smccc_start = __smccc_workaround_1_smc_start;
- smccc_end = __smccc_workaround_1_smc_end;
+ switch ((int)res.a0) {
+ case 1:
+ /* Firmware says we're just fine */
+ return 0;
+ case 0:
+ cb = call_smc_arch_workaround_1;
+ smccc_start = __smccc_workaround_1_smc_start;
+ smccc_end = __smccc_workaround_1_smc_end;
+ break;
+ default:
+ return -1;
+ }
break;
default:
- return;
+ return -1;
}
if (((midr & MIDR_CPU_MODEL_MASK) == MIDR_QCOM_FALKOR) ||
((midr & MIDR_CPU_MODEL_MASK) == MIDR_QCOM_FALKOR_V1))
cb = qcom_link_stack_sanitization;
- install_bp_hardening_cb(entry, cb, smccc_start, smccc_end);
+ if (IS_ENABLED(CONFIG_HARDEN_BRANCH_PREDICTOR))
+ install_bp_hardening_cb(cb, smccc_start, smccc_end);
- return;
+ return 1;
}
-#endif /* CONFIG_HARDEN_BRANCH_PREDICTOR */
-#ifdef CONFIG_ARM64_SSBD
DEFINE_PER_CPU_READ_MOSTLY(u64, arm64_ssbd_callback_required);
int ssbd_state __read_mostly = ARM64_SSBD_KERNEL;
+static bool __ssb_safe = true;
static const struct ssbd_options {
const char *str;
@@ -312,6 +318,19 @@ void __init arm64_enable_wa2_handling(struct alt_instr *alt,
void arm64_set_ssbd_mitigation(bool state)
{
+ if (!IS_ENABLED(CONFIG_ARM64_SSBD)) {
+ pr_info_once("SSBD disabled by kernel configuration\n");
+ return;
+ }
+
+ if (this_cpu_has_cap(ARM64_SSBS)) {
+ if (state)
+ asm volatile(SET_PSTATE_SSBS(0));
+ else
+ asm volatile(SET_PSTATE_SSBS(1));
+ return;
+ }
+
switch (psci_ops.conduit) {
case PSCI_CONDUIT_HVC:
arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_WORKAROUND_2, state, NULL);
@@ -333,11 +352,28 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
struct arm_smccc_res res;
bool required = true;
s32 val;
+ bool this_cpu_safe = false;
WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible());
+ if (cpu_mitigations_off())
+ ssbd_state = ARM64_SSBD_FORCE_DISABLE;
+
+ /* delay setting __ssb_safe until we get a firmware response */
+ if (is_midr_in_range_list(read_cpuid_id(), entry->midr_range_list))
+ this_cpu_safe = true;
+
+ if (this_cpu_has_cap(ARM64_SSBS)) {
+ if (!this_cpu_safe)
+ __ssb_safe = false;
+ required = false;
+ goto out_printmsg;
+ }
+
if (psci_ops.smccc_version == SMCCC_VERSION_1_0) {
ssbd_state = ARM64_SSBD_UNKNOWN;
+ if (!this_cpu_safe)
+ __ssb_safe = false;
return false;
}
@@ -354,6 +390,8 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
default:
ssbd_state = ARM64_SSBD_UNKNOWN;
+ if (!this_cpu_safe)
+ __ssb_safe = false;
return false;
}
@@ -362,14 +400,18 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
switch (val) {
case SMCCC_RET_NOT_SUPPORTED:
ssbd_state = ARM64_SSBD_UNKNOWN;
+ if (!this_cpu_safe)
+ __ssb_safe = false;
return false;
+ /* machines with mixed mitigation requirements must not return this */
case SMCCC_RET_NOT_REQUIRED:
pr_info_once("%s mitigation not required\n", entry->desc);
ssbd_state = ARM64_SSBD_MITIGATED;
return false;
case SMCCC_RET_SUCCESS:
+ __ssb_safe = false;
required = true;
break;
@@ -379,12 +421,13 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
default:
WARN_ON(1);
+ if (!this_cpu_safe)
+ __ssb_safe = false;
return false;
}
switch (ssbd_state) {
case ARM64_SSBD_FORCE_DISABLE:
- pr_info_once("%s disabled from command-line\n", entry->desc);
arm64_set_ssbd_mitigation(false);
required = false;
break;
@@ -397,7 +440,6 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
break;
case ARM64_SSBD_FORCE_ENABLE:
- pr_info_once("%s forced from command-line\n", entry->desc);
arm64_set_ssbd_mitigation(true);
required = true;
break;
@@ -407,9 +449,27 @@ static bool has_ssbd_mitigation(const struct arm64_cpu_capabilities *entry,
break;
}
+out_printmsg:
+ switch (ssbd_state) {
+ case ARM64_SSBD_FORCE_DISABLE:
+ pr_info_once("%s disabled from command-line\n", entry->desc);
+ break;
+
+ case ARM64_SSBD_FORCE_ENABLE:
+ pr_info_once("%s forced from command-line\n", entry->desc);
+ break;
+ }
+
return required;
}
-#endif /* CONFIG_ARM64_SSBD */
+
+/* known invulnerable cores */
+static const struct midr_range arm64_ssb_cpus[] = {
+ MIDR_ALL_VERSIONS(MIDR_CORTEX_A35),
+ MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
+ MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
+ {},
+};
#ifdef CONFIG_ARM64_ERRATUM_1463225
DEFINE_PER_CPU(int, __in_cortex_a76_erratum_1463225_wa);
@@ -464,6 +524,10 @@ has_cortex_a76_erratum_1463225(const struct arm64_cpu_capabilities *entry,
.type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \
CAP_MIDR_RANGE_LIST(midr_list)
+/* Track overall mitigation state. We are only mitigated if all cores are ok */
+static bool __hardenbp_enab = true;
+static bool __spectrev2_safe = true;
+
/*
* Generic helper for handling capabilties with multiple (match,enable) pairs
* of call backs, sharing the same capability bit.
@@ -496,26 +560,63 @@ multi_entry_cap_cpu_enable(const struct arm64_cpu_capabilities *entry)
caps->cpu_enable(caps);
}
-#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
-
/*
- * List of CPUs where we need to issue a psci call to
- * harden the branch predictor.
+ * List of CPUs that do not need any Spectre-v2 mitigation at all.
*/
-static const struct midr_range arm64_bp_harden_smccc_cpus[] = {
- MIDR_ALL_VERSIONS(MIDR_CORTEX_A57),
- MIDR_ALL_VERSIONS(MIDR_CORTEX_A72),
- MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
- MIDR_ALL_VERSIONS(MIDR_CORTEX_A75),
- MIDR_ALL_VERSIONS(MIDR_BRCM_VULCAN),
- MIDR_ALL_VERSIONS(MIDR_CAVIUM_THUNDERX2),
- MIDR_ALL_VERSIONS(MIDR_QCOM_FALKOR_V1),
- MIDR_ALL_VERSIONS(MIDR_QCOM_FALKOR),
- MIDR_ALL_VERSIONS(MIDR_NVIDIA_DENVER),
- {},
+static const struct midr_range spectre_v2_safe_list[] = {
+ MIDR_ALL_VERSIONS(MIDR_CORTEX_A35),
+ MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
+ MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
+ { /* sentinel */ }
};
-#endif
+/*
+ * Track overall bp hardening for all heterogeneous cores in the machine.
+ * We are only considered "safe" if all booted cores are known safe.
+ */
+static bool __maybe_unused
+check_branch_predictor(const struct arm64_cpu_capabilities *entry, int scope)
+{
+ int need_wa;
+
+ WARN_ON(scope != SCOPE_LOCAL_CPU || preemptible());
+
+ /* If the CPU has CSV2 set, we're safe */
+ if (cpuid_feature_extract_unsigned_field(read_cpuid(ID_AA64PFR0_EL1),
+ ID_AA64PFR0_CSV2_SHIFT))
+ return false;
+
+ /* Alternatively, we have a list of unaffected CPUs */
+ if (is_midr_in_range_list(read_cpuid_id(), spectre_v2_safe_list))
+ return false;
+
+ /* Fallback to firmware detection */
+ need_wa = detect_harden_bp_fw();
+ if (!need_wa)
+ return false;
+
+ __spectrev2_safe = false;
+
+ if (!IS_ENABLED(CONFIG_HARDEN_BRANCH_PREDICTOR)) {
+ pr_warn_once("spectrev2 mitigation disabled by kernel configuration\n");
+ __hardenbp_enab = false;
+ return false;
+ }
+
+ /* forced off */
+ if (__nospectre_v2 || cpu_mitigations_off()) {
+ pr_info_once("spectrev2 mitigation disabled by command line option\n");
+ __hardenbp_enab = false;
+ return false;
+ }
+
+ if (need_wa < 0) {
+ pr_warn_once("ARM_SMCCC_ARCH_WORKAROUND_1 missing from firmware\n");
+ __hardenbp_enab = false;
+ }
+
+ return (need_wa > 0);
+}
#ifdef CONFIG_HARDEN_EL2_VECTORS
@@ -674,13 +775,11 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
},
#endif
-#ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
{
.capability = ARM64_HARDEN_BRANCH_PREDICTOR,
- .cpu_enable = enable_smccc_arch_workaround_1,
- ERRATA_MIDR_RANGE_LIST(arm64_bp_harden_smccc_cpus),
+ .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM,
+ .matches = check_branch_predictor,
},
-#endif
#ifdef CONFIG_HARDEN_EL2_VECTORS
{
.desc = "EL2 vector hardening",
@@ -688,14 +787,13 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
ERRATA_MIDR_RANGE_LIST(arm64_harden_el2_vectors),
},
#endif
-#ifdef CONFIG_ARM64_SSBD
{
.desc = "Speculative Store Bypass Disable",
.capability = ARM64_SSBD,
.type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM,
.matches = has_ssbd_mitigation,
+ .midr_range_list = arm64_ssb_cpus,
},
-#endif
#ifdef CONFIG_ARM64_ERRATUM_1463225
{
.desc = "ARM erratum 1463225",
@@ -707,3 +805,38 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
{
}
};
+
+ssize_t cpu_show_spectre_v1(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "Mitigation: __user pointer sanitization\n");
+}
+
+ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ if (__spectrev2_safe)
+ return sprintf(buf, "Not affected\n");
+
+ if (__hardenbp_enab)
+ return sprintf(buf, "Mitigation: Branch predictor hardening\n");
+
+ return sprintf(buf, "Vulnerable\n");
+}
+
+ssize_t cpu_show_spec_store_bypass(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ if (__ssb_safe)
+ return sprintf(buf, "Not affected\n");
+
+ switch (ssbd_state) {
+ case ARM64_SSBD_KERNEL:
+ case ARM64_SSBD_FORCE_ENABLE:
+ if (IS_ENABLED(CONFIG_ARM64_SSBD))
+ return sprintf(buf,
+ "Mitigation: Speculative Store Bypass disabled via prctl\n");
+ }
+
+ return sprintf(buf, "Vulnerable\n");
+}
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index a897efdb3ddd..ff5beb59b3dc 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -24,6 +24,7 @@
#include <linux/stop_machine.h>
#include <linux/types.h>
#include <linux/mm.h>
+#include <linux/cpu.h>
#include <asm/cpu.h>
#include <asm/cpufeature.h>
#include <asm/cpu_ops.h>
@@ -164,6 +165,11 @@ static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = {
ARM64_FTR_END,
};
+static const struct arm64_ftr_bits ftr_id_aa64pfr1[] = {
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_SSBS_SHIFT, 4, ID_AA64PFR1_SSBS_PSTATE_NI),
+ ARM64_FTR_END,
+};
+
static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = {
/*
* We already refuse to boot CPUs that don't support our configured
@@ -379,7 +385,7 @@ static const struct __ftr_reg_entry {
/* Op1 = 0, CRn = 0, CRm = 4 */
ARM64_FTR_REG(SYS_ID_AA64PFR0_EL1, ftr_id_aa64pfr0),
- ARM64_FTR_REG(SYS_ID_AA64PFR1_EL1, ftr_raz),
+ ARM64_FTR_REG(SYS_ID_AA64PFR1_EL1, ftr_id_aa64pfr1),
ARM64_FTR_REG(SYS_ID_AA64ZFR0_EL1, ftr_raz),
/* Op1 = 0, CRn = 0, CRm = 5 */
@@ -669,7 +675,6 @@ void update_cpu_features(int cpu,
/*
* EL3 is not our concern.
- * ID_AA64PFR1 is currently RES0.
*/
taint |= check_update_ftr_reg(SYS_ID_AA64PFR0_EL1, cpu,
info->reg_id_aa64pfr0, boot->reg_id_aa64pfr0);
@@ -885,7 +890,7 @@ static bool has_cache_dic(const struct arm64_cpu_capabilities *entry,
return ctr & BIT(CTR_DIC_SHIFT);
}
-#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
+static bool __meltdown_safe = true;
static int __kpti_forced; /* 0: not forced, >0: forced on, <0: forced off */
static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
@@ -903,7 +908,17 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
{ /* sentinel */ }
};
- char const *str = "command line option";
+ char const *str = "kpti command line option";
+ bool meltdown_safe;
+
+ meltdown_safe = is_midr_in_range_list(read_cpuid_id(), kpti_safe_list);
+
+ /* Defer to CPU feature registers */
+ if (has_cpuid_feature(entry, scope))
+ meltdown_safe = true;
+
+ if (!meltdown_safe)
+ __meltdown_safe = false;
/*
* For reasons that aren't entirely clear, enabling KPTI on Cavium
@@ -915,6 +930,24 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
__kpti_forced = -1;
}
+ /* Useful for KASLR robustness */
+ if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && kaslr_offset() > 0) {
+ if (!__kpti_forced) {
+ str = "KASLR";
+ __kpti_forced = 1;
+ }
+ }
+
+ if (cpu_mitigations_off() && !__kpti_forced) {
+ str = "mitigations=off";
+ __kpti_forced = -1;
+ }
+
+ if (!IS_ENABLED(CONFIG_UNMAP_KERNEL_AT_EL0)) {
+ pr_info_once("kernel page table isolation disabled by kernel configuration\n");
+ return false;
+ }
+
/* Forced? */
if (__kpti_forced) {
pr_info_once("kernel page table isolation forced %s by %s\n",
@@ -922,18 +955,10 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
return __kpti_forced > 0;
}
- /* Useful for KASLR robustness */
- if (IS_ENABLED(CONFIG_RANDOMIZE_BASE))
- return true;
-
- /* Don't force KPTI for CPUs that are not vulnerable */
- if (is_midr_in_range_list(read_cpuid_id(), kpti_safe_list))
- return false;
-
- /* Defer to CPU feature registers */
- return !has_cpuid_feature(entry, scope);
+ return !meltdown_safe;
}
+#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
static void
kpti_install_ng_mappings(const struct arm64_cpu_capabilities *__unused)
{
@@ -958,6 +983,12 @@ kpti_install_ng_mappings(const struct arm64_cpu_capabilities *__unused)
return;
}
+#else
+static void
+kpti_install_ng_mappings(const struct arm64_cpu_capabilities *__unused)
+{
+}
+#endif /* CONFIG_UNMAP_KERNEL_AT_EL0 */
static int __init parse_kpti(char *str)
{
@@ -971,7 +1002,6 @@ static int __init parse_kpti(char *str)
return 0;
}
early_param("kpti", parse_kpti);
-#endif /* CONFIG_UNMAP_KERNEL_AT_EL0 */
#ifdef CONFIG_ARM64_HW_AFDBM
static inline void __cpu_enable_hw_dbm(void)
@@ -1067,6 +1097,48 @@ static void cpu_has_fwb(const struct arm64_cpu_capabilities *__unused)
WARN_ON(val & (7 << 27 | 7 << 21));
}
+#ifdef CONFIG_ARM64_SSBD
+static int ssbs_emulation_handler(struct pt_regs *regs, u32 instr)
+{
+ if (user_mode(regs))
+ return 1;
+
+ if (instr & BIT(CRm_shift))
+ regs->pstate |= PSR_SSBS_BIT;
+ else
+ regs->pstate &= ~PSR_SSBS_BIT;
+
+ arm64_skip_faulting_instruction(regs, 4);
+ return 0;
+}
+
+static struct undef_hook ssbs_emulation_hook = {
+ .instr_mask = ~(1U << CRm_shift),
+ .instr_val = 0xd500001f | REG_PSTATE_SSBS_IMM,
+ .fn = ssbs_emulation_handler,
+};
+
+static void cpu_enable_ssbs(const struct arm64_cpu_capabilities *__unused)
+{
+ static bool undef_hook_registered = false;
+ static DEFINE_SPINLOCK(hook_lock);
+
+ spin_lock(&hook_lock);
+ if (!undef_hook_registered) {
+ register_undef_hook(&ssbs_emulation_hook);
+ undef_hook_registered = true;
+ }
+ spin_unlock(&hook_lock);
+
+ if (arm64_get_ssbd_state() == ARM64_SSBD_FORCE_DISABLE) {
+ sysreg_clear_set(sctlr_el1, 0, SCTLR_ELx_DSSBS);
+ arm64_set_ssbd_mitigation(false);
+ } else {
+ arm64_set_ssbd_mitigation(true);
+ }
+}
+#endif /* CONFIG_ARM64_SSBD */
+
static const struct arm64_cpu_capabilities arm64_features[] = {
{
.desc = "GIC system register CPU interface",
@@ -1150,7 +1222,6 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.field_pos = ID_AA64PFR0_EL0_SHIFT,
.min_field_value = ID_AA64PFR0_EL0_32BIT_64BIT,
},
-#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
{
.desc = "Kernel page table isolation (KPTI)",
.capability = ARM64_UNMAP_KERNEL_AT_EL0,
@@ -1166,7 +1237,6 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = unmap_kernel_at_el0,
.cpu_enable = kpti_install_ng_mappings,
},
-#endif
{
/* FP/SIMD is not implemented */
.capability = ARM64_HAS_NO_FPSIMD,
@@ -1253,6 +1323,19 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_hw_dbm,
.cpu_enable = cpu_enable_hw_dbm,
},
+#endif
+#ifdef CONFIG_ARM64_SSBD
+ {
+ .desc = "Speculative Store Bypassing Safe (SSBS)",
+ .capability = ARM64_SSBS,
+ .type = ARM64_CPUCAP_WEAK_LOCAL_CPU_FEATURE,
+ .matches = has_cpuid_feature,
+ .sys_reg = SYS_ID_AA64PFR1_EL1,
+ .field_pos = ID_AA64PFR1_SSBS_SHIFT,
+ .sign = FTR_UNSIGNED,
+ .min_field_value = ID_AA64PFR1_SSBS_PSTATE_ONLY,
+ .cpu_enable = cpu_enable_ssbs,
+ },
#endif
{},
};
@@ -1299,6 +1382,7 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
#ifdef CONFIG_ARM64_SVE
HWCAP_CAP(SYS_ID_AA64PFR0_EL1, ID_AA64PFR0_SVE_SHIFT, FTR_UNSIGNED, ID_AA64PFR0_SVE, CAP_HWCAP, HWCAP_SVE),
#endif
+ HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_SSBS_SHIFT, FTR_UNSIGNED, ID_AA64PFR1_SSBS_PSTATE_INSNS, CAP_HWCAP, HWCAP_SSBS),
{},
};
@@ -1793,3 +1877,15 @@ void cpu_clear_disr(const struct arm64_cpu_capabilities *__unused)
/* Firmware may have left a deferred SError in this register. */
write_sysreg_s(0, SYS_DISR_EL1);
}
+
+ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ if (__meltdown_safe)
+ return sprintf(buf, "Not affected\n");
+
+ if (arm64_kernel_unmapped_at_el0())
+ return sprintf(buf, "Mitigation: PTI\n");
+
+ return sprintf(buf, "Vulnerable\n");
+}
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index e9ab7b3ed317..dce971f2c167 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -81,6 +81,7 @@ static const char *const hwcap_str[] = {
"uscat",
"ilrcpc",
"flagm",
+ "ssbs",
NULL
};
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 7f1628effe6d..bc2226608e13 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -358,6 +358,10 @@ int copy_thread(unsigned long clone_flags, unsigned long stack_start,
if (IS_ENABLED(CONFIG_ARM64_UAO) &&
cpus_have_const_cap(ARM64_HAS_UAO))
childregs->pstate |= PSR_UAO_BIT;
+
+ if (arm64_get_ssbd_state() == ARM64_SSBD_FORCE_DISABLE)
+ set_ssbs_bit(childregs);
+
p->thread.cpu_context.x19 = stack_start;
p->thread.cpu_context.x20 = stk_sz;
}
@@ -397,6 +401,32 @@ void uao_thread_switch(struct task_struct *next)
}
}
+/*
+ * Force SSBS state on context-switch, since it may be lost after migrating
+ * from a CPU which treats the bit as RES0 in a heterogeneous system.
+ */
+static void ssbs_thread_switch(struct task_struct *next)
+{
+ struct pt_regs *regs = task_pt_regs(next);
+
+ /*
+ * Nothing to do for kernel threads, but 'regs' may be junk
+ * (e.g. idle task) so check the flags and bail early.
+ */
+ if (unlikely(next->flags & PF_KTHREAD))
+ return;
+
+ /* If the mitigation is enabled, then we leave SSBS clear. */
+ if ((arm64_get_ssbd_state() == ARM64_SSBD_FORCE_ENABLE) ||
+ test_tsk_thread_flag(next, TIF_SSBD))
+ return;
+
+ if (compat_user_mode(regs))
+ set_compat_ssbs_bit(regs);
+ else if (user_mode(regs))
+ set_ssbs_bit(regs);
+}
+
/*
* We store our current task in sp_el0, which is clobbered by userspace. Keep a
* shadow copy so that we can restore this upon entry from userspace.
@@ -425,6 +455,7 @@ __notrace_funcgraph struct task_struct *__switch_to(struct task_struct *prev,
contextidr_thread_switch(next);
entry_task_switch(next);
uao_thread_switch(next);
+ ssbs_thread_switch(next);
/*
* Complete any pending TLB or cache maintenance on this CPU in case
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index 6219486fa25f..0211c3c7533b 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -1666,19 +1666,20 @@ void syscall_trace_exit(struct pt_regs *regs)
}
/*
- * SPSR_ELx bits which are always architecturally RES0 per ARM DDI 0487C.a
- * We also take into account DIT (bit 24), which is not yet documented, and
- * treat PAN and UAO as RES0 bits, as they are meaningless at EL0, and may be
- * allocated an EL0 meaning in future.
+ * SPSR_ELx bits which are always architecturally RES0 per ARM DDI 0487D.a.
+ * We permit userspace to set SSBS (AArch64 bit 12, AArch32 bit 23) which is
+ * not described in ARM DDI 0487D.a.
+ * We treat PAN and UAO as RES0 bits, as they are meaningless at EL0, and may
+ * be allocated an EL0 meaning in future.
* Userspace cannot use these until they have an architectural meaning.
* Note that this follows the SPSR_ELx format, not the AArch32 PSR format.
* We also reserve IL for the kernel; SS is handled dynamically.
*/
#define SPSR_EL1_AARCH64_RES0_BITS \
- (GENMASK_ULL(63,32) | GENMASK_ULL(27, 25) | GENMASK_ULL(23, 22) | \
- GENMASK_ULL(20, 10) | GENMASK_ULL(5, 5))
+ (GENMASK_ULL(63, 32) | GENMASK_ULL(27, 25) | GENMASK_ULL(23, 22) | \
+ GENMASK_ULL(20, 13) | GENMASK_ULL(11, 10) | GENMASK_ULL(5, 5))
#define SPSR_EL1_AARCH32_RES0_BITS \
- (GENMASK_ULL(63,32) | GENMASK_ULL(23, 22) | GENMASK_ULL(20,20))
+ (GENMASK_ULL(63, 32) | GENMASK_ULL(22, 22) | GENMASK_ULL(20, 20))
static int valid_compat_regs(struct user_pt_regs *regs)
{
diff --git a/arch/arm64/kernel/ssbd.c b/arch/arm64/kernel/ssbd.c
index 388f8fc13080..f496fb2f7122 100644
--- a/arch/arm64/kernel/ssbd.c
+++ b/arch/arm64/kernel/ssbd.c
@@ -3,13 +3,31 @@
* Copyright (C) 2018 ARM Ltd, All Rights Reserved.
*/
+#include <linux/compat.h>
#include <linux/errno.h>
#include <linux/prctl.h>
#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
#include <linux/thread_info.h>
#include <asm/cpufeature.h>
+static void ssbd_ssbs_enable(struct task_struct *task)
+{
+ u64 val = is_compat_thread(task_thread_info(task)) ?
+ PSR_AA32_SSBS_BIT : PSR_SSBS_BIT;
+
+ task_pt_regs(task)->pstate |= val;
+}
+
+static void ssbd_ssbs_disable(struct task_struct *task)
+{
+ u64 val = is_compat_thread(task_thread_info(task)) ?
+ PSR_AA32_SSBS_BIT : PSR_SSBS_BIT;
+
+ task_pt_regs(task)->pstate &= ~val;
+}
+
/*
* prctl interface for SSBD
* FIXME: Drop the below ifdefery once merged in 4.18.
@@ -47,12 +65,14 @@ static int ssbd_prctl_set(struct task_struct *task, unsigned long ctrl)
return -EPERM;
task_clear_spec_ssb_disable(task);
clear_tsk_thread_flag(task, TIF_SSBD);
+ ssbd_ssbs_enable(task);
break;
case PR_SPEC_DISABLE:
if (state == ARM64_SSBD_FORCE_DISABLE)
return -EPERM;
task_set_spec_ssb_disable(task);
set_tsk_thread_flag(task, TIF_SSBD);
+ ssbd_ssbs_disable(task);
break;
case PR_SPEC_FORCE_DISABLE:
if (state == ARM64_SSBD_FORCE_DISABLE)
@@ -60,6 +80,7 @@ static int ssbd_prctl_set(struct task_struct *task, unsigned long ctrl)
task_set_spec_ssb_disable(task);
task_set_spec_ssb_force_disable(task);
set_tsk_thread_flag(task, TIF_SSBD);
+ ssbd_ssbs_disable(task);
break;
default:
return -ERANGE;
diff --git a/arch/arm64/kvm/hyp/sysreg-sr.c b/arch/arm64/kvm/hyp/sysreg-sr.c
index 963d669ae3a2..7414b76191c2 100644
--- a/arch/arm64/kvm/hyp/sysreg-sr.c
+++ b/arch/arm64/kvm/hyp/sysreg-sr.c
@@ -293,3 +293,14 @@ void kvm_vcpu_put_sysregs(struct kvm_vcpu *vcpu)
vcpu->arch.sysregs_loaded_on_cpu = false;
}
+
+void __hyp_text __kvm_enable_ssbs(void)
+{
+ u64 tmp;
+
+ asm volatile(
+ "mrs %0, sctlr_el2\n"
+ "orr %0, %0, %1\n"
+ "msr sctlr_el2, %0"
+ : "=&r" (tmp) : "L" (SCTLR_ELx_DSSBS));
+}
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 0edba3e75747..4e2ee743088f 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -387,6 +387,22 @@
#define cpu_has_dsp3 __ase(MIPS_ASE_DSP3)
#endif
+#ifndef cpu_has_loongson_mmi
+#define cpu_has_loongson_mmi __ase(MIPS_ASE_LOONGSON_MMI)
+#endif
+
+#ifndef cpu_has_loongson_cam
+#define cpu_has_loongson_cam __ase(MIPS_ASE_LOONGSON_CAM)
+#endif
+
+#ifndef cpu_has_loongson_ext
+#define cpu_has_loongson_ext __ase(MIPS_ASE_LOONGSON_EXT)
+#endif
+
+#ifndef cpu_has_loongson_ext2
+#define cpu_has_loongson_ext2 __ase(MIPS_ASE_LOONGSON_EXT2)
+#endif
+
#ifndef cpu_has_mipsmt
#define cpu_has_mipsmt __isa_lt_and_ase(6, MIPS_ASE_MIPSMT)
#endif
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index dacbdb84516a..2b4b14a56575 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -436,5 +436,9 @@ enum cpu_type_enum {
#define MIPS_ASE_MSA 0x00000100 /* MIPS SIMD Architecture */
#define MIPS_ASE_DSP3 0x00000200 /* Signal Processing ASE Rev 3*/
#define MIPS_ASE_MIPS16E2 0x00000400 /* MIPS16e2 */
+#define MIPS_ASE_LOONGSON_MMI 0x00000800 /* Loongson MultiMedia extensions Instructions */
+#define MIPS_ASE_LOONGSON_CAM 0x00001000 /* Loongson CAM */
+#define MIPS_ASE_LOONGSON_EXT 0x00002000 /* Loongson EXTensions */
+#define MIPS_ASE_LOONGSON_EXT2 0x00004000 /* Loongson EXTensions R2 */
#endif /* _ASM_CPU_H */
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 25cd8737e7fe..958b627592c3 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1489,6 +1489,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
__cpu_name[cpu] = "ICT Loongson-3";
set_elf_platform(cpu, "loongson3a");
set_isa(c, MIPS_CPU_ISA_M64R1);
+ c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+ MIPS_ASE_LOONGSON_EXT);
break;
case PRID_REV_LOONGSON3B_R1:
case PRID_REV_LOONGSON3B_R2:
@@ -1496,6 +1498,8 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
__cpu_name[cpu] = "ICT Loongson-3";
set_elf_platform(cpu, "loongson3b");
set_isa(c, MIPS_CPU_ISA_M64R1);
+ c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+ MIPS_ASE_LOONGSON_EXT);
break;
}
@@ -1861,6 +1865,8 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
decode_configs(c);
c->options |= MIPS_CPU_FTLB | MIPS_CPU_TLBINV | MIPS_CPU_LDPTE;
c->writecombine = _CACHE_UNCACHED_ACCELERATED;
+ c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+ MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2);
break;
default:
panic("Unknown Loongson Processor ID!");
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index b2de408a259e..f8d36710cd58 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -124,6 +124,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
if (cpu_has_eva) seq_printf(m, "%s", " eva");
if (cpu_has_htw) seq_printf(m, "%s", " htw");
if (cpu_has_xpa) seq_printf(m, "%s", " xpa");
+ if (cpu_has_loongson_mmi) seq_printf(m, "%s", " loongson-mmi");
+ if (cpu_has_loongson_cam) seq_printf(m, "%s", " loongson-cam");
+ if (cpu_has_loongson_ext) seq_printf(m, "%s", " loongson-ext");
+ if (cpu_has_loongson_ext2) seq_printf(m, "%s", " loongson-ext2");
seq_printf(m, "\n");
if (cpu_has_mmips) {
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index 29f49a35d6ee..6a6804c2e1b0 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -212,7 +212,7 @@ static inline void cpu_feature_keys_init(void) { }
#define CPU_FTR_POWER9_DD2_1 LONG_ASM_CONST(0x0000080000000000)
#define CPU_FTR_P9_TM_HV_ASSIST LONG_ASM_CONST(0x0000100000000000)
#define CPU_FTR_P9_TM_XER_SO_BUG LONG_ASM_CONST(0x0000200000000000)
-#define CPU_FTR_P9_TLBIE_BUG LONG_ASM_CONST(0x0000400000000000)
+#define CPU_FTR_P9_TLBIE_STQ_BUG LONG_ASM_CONST(0x0000400000000000)
#define CPU_FTR_P9_TIDR LONG_ASM_CONST(0x0000800000000000)
#ifndef __ASSEMBLY__
@@ -460,7 +460,7 @@ static inline void cpu_feature_keys_init(void) { }
CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \
CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_ARCH_207S | \
CPU_FTR_TM_COMP | CPU_FTR_ARCH_300 | CPU_FTR_PKEY | \
- CPU_FTR_P9_TLBIE_BUG | CPU_FTR_P9_TIDR)
+ CPU_FTR_P9_TLBIE_STQ_BUG | CPU_FTR_P9_TIDR)
#define CPU_FTRS_POWER9_DD2_0 CPU_FTRS_POWER9
#define CPU_FTRS_POWER9_DD2_1 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1)
#define CPU_FTRS_POWER9_DD2_2 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD2_1 | \
diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
index f432054234a4..f3b8e04eca9c 100644
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -694,9 +694,35 @@ static bool __init cpufeatures_process_feature(struct dt_cpu_feature *f)
return true;
}
+/*
+ * Handle POWER9 broadcast tlbie invalidation issue using
+ * cpu feature flag.
+ */
+static __init void update_tlbie_feature_flag(unsigned long pvr)
+{
+ if (PVR_VER(pvr) == PVR_POWER9) {
+ /*
+ * Set the tlbie feature flag for anything below
+ * Nimbus DD 2.3 and Cumulus DD 1.3
+ */
+ if ((pvr & 0xe000) == 0) {
+ /* Nimbus */
+ if ((pvr & 0xfff) < 0x203)
+ cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_STQ_BUG;
+ } else if ((pvr & 0xc000) == 0) {
+ /* Cumulus */
+ if ((pvr & 0xfff) < 0x103)
+ cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_STQ_BUG;
+ } else {
+ WARN_ONCE(1, "Unknown PVR");
+ cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_STQ_BUG;
+ }
+ }
+}
+
static __init void cpufeatures_cpu_quirks(void)
{
- int version = mfspr(SPRN_PVR);
+ unsigned long version = mfspr(SPRN_PVR);
/*
* Not all quirks can be derived from the cpufeatures device tree.
@@ -715,10 +741,10 @@ static __init void cpufeatures_cpu_quirks(void)
if ((version & 0xffff0000) == 0x004e0000) {
cur_cpu_spec->cpu_features &= ~(CPU_FTR_DAWR);
- cur_cpu_spec->cpu_features |= CPU_FTR_P9_TLBIE_BUG;
cur_cpu_spec->cpu_features |= CPU_FTR_P9_TIDR;
}
+ update_tlbie_feature_flag(version);
/*
* PKEY was not in the initial base or feature node
* specification, but it should become optional in the next
diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c
index efdd16a79075..93e06778b136 100644
--- a/arch/powerpc/kernel/mce.c
+++ b/arch/powerpc/kernel/mce.c
@@ -45,6 +45,7 @@ static DEFINE_PER_CPU(struct machine_check_event[MAX_MC_EVT],
mce_ue_event_queue);
static void machine_check_process_queued_event(struct irq_work *work);
+static void machine_check_ue_irq_work(struct irq_work *work);
void machine_check_ue_event(struct machine_check_event *evt);
static void machine_process_ue_event(struct work_struct *work);
@@ -52,6 +53,10 @@ static struct irq_work mce_event_process_work = {
.func = machine_check_process_queued_event,
};
+static struct irq_work mce_ue_event_irq_work = {
+ .func = machine_check_ue_irq_work,
+};
+
DECLARE_WORK(mce_ue_event_work, machine_process_ue_event);
static void mce_set_error_info(struct machine_check_event *mce,
@@ -208,6 +213,10 @@ void release_mce_event(void)
get_mce_event(NULL, true);
}
+static void machine_check_ue_irq_work(struct irq_work *work)
+{
+ schedule_work(&mce_ue_event_work);
+}
/*
* Queue up the MCE event which then can be handled later.
@@ -225,7 +234,7 @@ void machine_check_ue_event(struct machine_check_event *evt)
memcpy(this_cpu_ptr(&mce_ue_event_queue[index]), evt, sizeof(*evt));
/* Queue work to process this event later. */
- schedule_work(&mce_ue_event_work);
+ irq_work_queue(&mce_ue_event_irq_work);
}
/*
diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index 3022d67f0c48..37a110b8e7e1 100644
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c
@@ -39,6 +39,7 @@
static unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
{
pte_t *ptep;
+ unsigned int shift;
unsigned long flags;
struct mm_struct *mm;
@@ -48,13 +49,18 @@ static unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr)
mm = &init_mm;
local_irq_save(flags);
- if (mm == current->mm)
- ptep = find_current_mm_pte(mm->pgd, addr, NULL, NULL);
- else
- ptep = find_init_mm_pte(addr, NULL);
+ ptep = __find_linux_pte(mm->pgd, addr, NULL, &shift);
local_irq_restore(flags);
+
if (!ptep || pte_special(*ptep))
return ULONG_MAX;
+
+ if (shift > PAGE_SHIFT) {
+ unsigned long rpnmask = (1ul << shift) - PAGE_SIZE;
+
+ return pte_pfn(__pte(pte_val(*ptep) | (addr & rpnmask)));
+ }
+
return pte_pfn(*ptep);
}
@@ -339,7 +345,7 @@ static const struct mce_derror_table mce_p9_derror_table[] = {
MCE_INITIATOR_CPU, MCE_SEV_ERROR_SYNC, },
{ 0, false, 0, 0, 0, 0 } };
-static int mce_find_instr_ea_and_pfn(struct pt_regs *regs, uint64_t *addr,
+static int mce_find_instr_ea_and_phys(struct pt_regs *regs, uint64_t *addr,
uint64_t *phys_addr)
{
/*
@@ -530,7 +536,8 @@ static int mce_handle_derror(struct pt_regs *regs,
* kernel/exception-64s.h
*/
if (get_paca()->in_mce < MAX_MCE_DEPTH)
- mce_find_instr_ea_and_pfn(regs, addr, phys_addr);
+ mce_find_instr_ea_and_phys(regs, addr,
+ phys_addr);
}
found = 1;
}
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 05b32cc12e41..3ae3e8d141e3 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1407,7 +1407,14 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
*val = get_reg_val(id, vcpu->arch.pspb);
break;
case KVM_REG_PPC_DPDES:
- *val = get_reg_val(id, vcpu->arch.vcore->dpdes);
+ /*
+ * On POWER9, where we are emulating msgsndp etc.,
+ * we return 1 bit for each vcpu, which can come from
+ * either vcore->dpdes or doorbell_request.
+ * On POWER8, doorbell_request is 0.
+ */
+ *val = get_reg_val(id, vcpu->arch.vcore->dpdes |
+ vcpu->arch.doorbell_request);
break;
case KVM_REG_PPC_VTB:
*val = get_reg_val(id, vcpu->arch.vcore->vtb);
@@ -2550,7 +2557,7 @@ static void collect_piggybacks(struct core_info *cip, int target_threads)
if (!spin_trylock(&pvc->lock))
continue;
prepare_threads(pvc);
- if (!pvc->n_runnable) {
+ if (!pvc->n_runnable || !pvc->kvm->arch.mmu_ready) {
list_del_init(&pvc->preempt_list);
if (pvc->runner == NULL) {
pvc->vcore_state = VCORE_INACTIVE;
@@ -2571,15 +2578,20 @@ static void collect_piggybacks(struct core_info *cip, int target_threads)
spin_unlock(&lp->lock);
}
-static bool recheck_signals(struct core_info *cip)
+static bool recheck_signals_and_mmu(struct core_info *cip)
{
int sub, i;
struct kvm_vcpu *vcpu;
+ struct kvmppc_vcore *vc;
- for (sub = 0; sub < cip->n_subcores; ++sub)
- for_each_runnable_thread(i, vcpu, cip->vc[sub])
+ for (sub = 0; sub < cip->n_subcores; ++sub) {
+ vc = cip->vc[sub];
+ if (!vc->kvm->arch.mmu_ready)
+ return true;
+ for_each_runnable_thread(i, vcpu, vc)
if (signal_pending(vcpu->arch.run_task))
return true;
+ }
return false;
}
@@ -2800,7 +2812,7 @@ static noinline void kvmppc_run_core(struct kvmppc_vcore *vc)
local_irq_disable();
hard_irq_disable();
if (lazy_irq_pending() || need_resched() ||
- recheck_signals(&core_info) || !vc->kvm->arch.mmu_ready) {
+ recheck_signals_and_mmu(&core_info)) {
local_irq_enable();
vc->vcore_state = VCORE_INACTIVE;
/* Unlock all except the primary vcore */
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index a67cf1cdeda4..7c68d834c94a 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -452,7 +452,7 @@ static void do_tlbies(struct kvm *kvm, unsigned long *rbvalues,
"r" (rbvalues[i]), "r" (kvm->arch.lpid));
}
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
/*
* Need the extra ptesync to make sure we don't
* re-order the tlbie
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 68c7591f2b5f..f1878e13dd56 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -2903,29 +2903,39 @@ kvm_cede_prodded:
kvm_cede_exit:
ld r9, HSTATE_KVM_VCPU(r13)
#ifdef CONFIG_KVM_XICS
- /* Abort if we still have a pending escalation */
+ /* are we using XIVE with single escalation? */
+ ld r10, VCPU_XIVE_ESC_VADDR(r9)
+ cmpdi r10, 0
+ beq 3f
+ li r6, XIVE_ESB_SET_PQ_00
+ /*
+ * If we still have a pending escalation, abort the cede,
+ * and we must set PQ to 10 rather than 00 so that we don't
+ * potentially end up with two entries for the escalation
+ * interrupt in the XIVE interrupt queue. In that case
+ * we also don't want to set xive_esc_on to 1 here in
+ * case we race with xive_esc_irq().
+ */
lbz r5, VCPU_XIVE_ESC_ON(r9)
cmpwi r5, 0
- beq 1f
+ beq 4f
li r0, 0
stb r0, VCPU_CEDED(r9)
-1: /* Enable XIVE escalation */
- li r5, XIVE_ESB_SET_PQ_00
+ li r6, XIVE_ESB_SET_PQ_10
+ b 5f
+4: li r0, 1
+ stb r0, VCPU_XIVE_ESC_ON(r9)
+ /* make sure store to xive_esc_on is seen before xive_esc_irq runs */
+ sync
+5: /* Enable XIVE escalation */
mfmsr r0
andi. r0, r0, MSR_DR /* in real mode? */
beq 1f
- ld r10, VCPU_XIVE_ESC_VADDR(r9)
- cmpdi r10, 0
- beq 3f
- ldx r0, r10, r5
+ ldx r0, r10, r6
b 2f
1: ld r10, VCPU_XIVE_ESC_RADDR(r9)
- cmpdi r10, 0
- beq 3f
- ldcix r0, r10, r5
+ ldcix r0, r10, r6
2: sync
- li r0, 1
- stb r0, VCPU_XIVE_ESC_ON(r9)
#endif /* CONFIG_KVM_XICS */
3: b guest_exit_cont
diff --git a/arch/powerpc/kvm/book3s_xive.c b/arch/powerpc/kvm/book3s_xive.c
index aae34f218ab4..031f07f048af 100644
--- a/arch/powerpc/kvm/book3s_xive.c
+++ b/arch/powerpc/kvm/book3s_xive.c
@@ -1037,20 +1037,22 @@ void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu)
/* Mask the VP IPI */
xive_vm_esb_load(&xc->vp_ipi_data, XIVE_ESB_SET_PQ_01);
- /* Disable the VP */
- xive_native_disable_vp(xc->vp_id);
-
- /* Free the queues & associated interrupts */
+ /* Free escalations */
for (i = 0; i < KVMPPC_XIVE_Q_COUNT; i++) {
- struct xive_q *q = &xc->queues[i];
-
- /* Free the escalation irq */
if (xc->esc_virq[i]) {
free_irq(xc->esc_virq[i], vcpu);
irq_dispose_mapping(xc->esc_virq[i]);
kfree(xc->esc_virq_names[i]);
}
- /* Free the queue */
+ }
+
+ /* Disable the VP */
+ xive_native_disable_vp(xc->vp_id);
+
+ /* Free the queues */
+ for (i = 0; i < KVMPPC_XIVE_Q_COUNT; i++) {
+ struct xive_q *q = &xc->queues[i];
+
xive_native_disable_queue(xc->vp_id, q, i);
if (q->qpage) {
free_pages((unsigned long)q->qpage,
diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c
index aaa28fd918fe..0c13561d8b80 100644
--- a/arch/powerpc/mm/hash_native_64.c
+++ b/arch/powerpc/mm/hash_native_64.c
@@ -203,7 +203,7 @@ static inline unsigned long ___tlbie(unsigned long vpn, int psize,
static inline void fixup_tlbie(unsigned long vpn, int psize, int apsize, int ssize)
{
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
/* Need the extra ptesync to ensure we don't reorder tlbie*/
asm volatile("ptesync": : :"memory");
___tlbie(vpn, psize, apsize, ssize);
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 29fd8940867e..b1007e9a31ba 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -37,6 +37,7 @@
#include <linux/context_tracking.h>
#include <linux/libfdt.h>
#include <linux/pkeys.h>
+#include <linux/cpu.h>
#include <asm/debugfs.h>
#include <asm/processor.h>
@@ -1891,10 +1892,16 @@ static int hpt_order_get(void *data, u64 *val)
static int hpt_order_set(void *data, u64 val)
{
+ int ret;
+
if (!mmu_hash_ops.resize_hpt)
return -ENODEV;
- return mmu_hash_ops.resize_hpt(val);
+ cpus_read_lock();
+ ret = mmu_hash_ops.resize_hpt(val);
+ cpus_read_unlock();
+
+ return ret;
}
DEFINE_SIMPLE_ATTRIBUTE(fops_hpt_order, hpt_order_get, hpt_order_set, "%llu\n");
diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c
index fef3e1eb3a19..0cddae4263f9 100644
--- a/arch/powerpc/mm/tlb-radix.c
+++ b/arch/powerpc/mm/tlb-radix.c
@@ -220,7 +220,7 @@ static inline void fixup_tlbie(void)
unsigned long pid = 0;
unsigned long va = ((1UL << 52) - 1);
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
asm volatile("ptesync": : :"memory");
__tlbie_va(va, pid, mmu_get_ap(MMU_PAGE_64K), RIC_FLUSH_TLB);
}
@@ -230,7 +230,7 @@ static inline void fixup_tlbie_lpid(unsigned long lpid)
{
unsigned long va = ((1UL << 52) - 1);
- if (cpu_has_feature(CPU_FTR_P9_TLBIE_BUG)) {
+ if (cpu_has_feature(CPU_FTR_P9_TLBIE_STQ_BUG)) {
asm volatile("ptesync": : :"memory");
__tlbie_lpid_va(va, lpid, mmu_get_ap(MMU_PAGE_64K), RIC_FLUSH_TLB);
}
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 38fe4087484a..edf9032e2e5c 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -680,7 +680,10 @@ static ssize_t symbol_map_read(struct file *fp, struct kobject *kobj,
bin_attr->size);
}
-static BIN_ATTR_RO(symbol_map, 0);
+static struct bin_attribute symbol_map_attr = {
+ .attr = {.name = "symbol_map", .mode = 0400},
+ .read = symbol_map_read
+};
static void opal_export_symmap(void)
{
@@ -697,10 +700,10 @@ static void opal_export_symmap(void)
return;
/* Setup attributes */
- bin_attr_symbol_map.private = __va(be64_to_cpu(syms[0]));
- bin_attr_symbol_map.size = be64_to_cpu(syms[1]);
+ symbol_map_attr.private = __va(be64_to_cpu(syms[0]));
+ symbol_map_attr.size = be64_to_cpu(syms[1]);
- rc = sysfs_create_bin_file(opal_kobj, &bin_attr_symbol_map);
+ rc = sysfs_create_bin_file(opal_kobj, &symbol_map_attr);
if (rc)
pr_warn("Error %d creating OPAL symbols file\n", rc);
}
diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
index 29e66d6e5763..15a567128c0f 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda-tce.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda-tce.c
@@ -49,6 +49,9 @@ static __be64 *pnv_alloc_tce_level(int nid, unsigned int shift)
return addr;
}
+static void pnv_pci_ioda2_table_do_free_pages(__be64 *addr,
+ unsigned long size, unsigned int levels);
+
static __be64 *pnv_tce(struct iommu_table *tbl, bool user, long idx, bool alloc)
{
__be64 *tmp = user ? tbl->it_userspace : (__be64 *) tbl->it_base;
@@ -58,9 +61,9 @@ static __be64 *pnv_tce(struct iommu_table *tbl, bool user, long idx, bool alloc)
while (level) {
int n = (idx & mask) >> (level * shift);
- unsigned long tce;
+ unsigned long oldtce, tce = be64_to_cpu(READ_ONCE(tmp[n]));
- if (tmp[n] == 0) {
+ if (!tce) {
__be64 *tmp2;
if (!alloc)
@@ -71,10 +74,15 @@ static __be64 *pnv_tce(struct iommu_table *tbl, bool user, long idx, bool alloc)
if (!tmp2)
return NULL;
- tmp[n] = cpu_to_be64(__pa(tmp2) |
- TCE_PCI_READ | TCE_PCI_WRITE);
+ tce = __pa(tmp2) | TCE_PCI_READ | TCE_PCI_WRITE;
+ oldtce = be64_to_cpu(cmpxchg(&tmp[n], 0,
+ cpu_to_be64(tce)));
+ if (oldtce) {
+ pnv_pci_ioda2_table_do_free_pages(tmp2,
+ ilog2(tbl->it_level_size) + 3, 1);
+ tce = oldtce;
+ }
}
- tce = be64_to_cpu(tmp[n]);
tmp = __va(tce & ~(TCE_PCI_READ | TCE_PCI_WRITE));
idx &= ~mask;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 9e52b686a8fa..ea602f7f97ce 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -647,7 +647,10 @@ static int pseries_lpar_resize_hpt_commit(void *data)
return 0;
}
-/* Must be called in user context */
+/*
+ * Must be called in process context. The caller must hold the
+ * cpus_lock.
+ */
static int pseries_lpar_resize_hpt(unsigned long shift)
{
struct hpt_resize_state state = {
@@ -699,7 +702,8 @@ static int pseries_lpar_resize_hpt(unsigned long shift)
t1 = ktime_get();
- rc = stop_machine(pseries_lpar_resize_hpt_commit, &state, NULL);
+ rc = stop_machine_cpuslocked(pseries_lpar_resize_hpt_commit,
+ &state, NULL);
t2 = ktime_get();
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index fa2c08e3c05e..a03821b2656a 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -171,9 +171,13 @@ ENTRY(handle_exception)
move a1, s4 /* scause */
tail do_IRQ
1:
- /* Exceptions run with interrupts enabled */
+ /* Exceptions run with interrupts enabled or disabled
+ depending on the state of sstatus.SR_SPIE */
+ andi t0, s1, SR_SPIE
+ beqz t0, 1f
csrs sstatus, SR_SIE
+1:
/* Handle syscalls */
li t0, EXC_SYSCALL
beq s4, t0, handle_syscall
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 6e758bb6cd29..99ef537e548a 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -183,20 +183,30 @@ unsigned long get_wchan(struct task_struct *p)
if (!p || p == current || p->state == TASK_RUNNING || !task_stack_page(p))
return 0;
+
+ if (!try_get_task_stack(p))
+ return 0;
+
low = task_stack_page(p);
high = (struct stack_frame *) task_pt_regs(p);
sf = (struct stack_frame *) p->thread.ksp;
- if (sf <= low || sf > high)
- return 0;
+ if (sf <= low || sf > high) {
+ return_address = 0;
+ goto out;
+ }
for (count = 0; count < 16; count++) {
sf = (struct stack_frame *) sf->back_chain;
- if (sf <= low || sf > high)
- return 0;
+ if (sf <= low || sf > high) {
+ return_address = 0;
+ goto out;
+ }
return_address = sf->gprs[8];
if (!in_sched_functions(return_address))
- return return_address;
+ goto out;
}
- return 0;
+out:
+ put_task_stack(p);
+ return return_address;
}
unsigned long arch_align_stack(unsigned long sp)
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index e8184a15578a..7b96888974db 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -311,7 +311,8 @@ int arch_update_cpu_topology(void)
on_each_cpu(__arch_update_dedicated_flag, NULL, 0);
for_each_online_cpu(cpu) {
dev = get_cpu_device(cpu);
- kobject_uevent(&dev->kobj, KOBJ_CHANGE);
+ if (dev)
+ kobject_uevent(&dev->kobj, KOBJ_CHANGE);
}
return rc;
}
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index e0551c948c59..fac1d4eaa426 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -3890,7 +3890,7 @@ static long kvm_s390_guest_mem_op(struct kvm_vcpu *vcpu,
const u64 supported_flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION
| KVM_S390_MEMOP_F_CHECK_ONLY;
- if (mop->flags & ~supported_flags)
+ if (mop->flags & ~supported_flags || mop->ar >= NUM_ACRS || !mop->size)
return -EINVAL;
if (mop->size > MEM_OP_MAX_SIZE)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index e83f4f6bfdac..6f7b3acdab26 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -8801,7 +8801,7 @@ static int handle_vmread(struct kvm_vcpu *vcpu)
/* _system ok, nested_vmx_check_permission has verified cpl=0 */
if (kvm_write_guest_virt_system(vcpu, gva, &field_value,
(is_long_mode(vcpu) ? 8 : 4),
- NULL))
+ &e))
kvm_inject_page_fault(vcpu, &e);
}
@@ -12574,7 +12574,7 @@ static int check_vmentry_prereqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
/* VM-entry exception error code */
if (has_error_code &&
- vmcs12->vm_entry_exception_error_code & GENMASK(31, 15))
+ vmcs12->vm_entry_exception_error_code & GENMASK(31, 16))
return VMXERR_ENTRY_INVALID_CONTROL_FIELD;
/* VM-entry interruption-info field: reserved bits */
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 05cb5855255e..6ae8a013af31 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -791,34 +791,42 @@ int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
}
EXPORT_SYMBOL_GPL(kvm_set_xcr);
-int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+static int kvm_valid_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
- unsigned long old_cr4 = kvm_read_cr4(vcpu);
- unsigned long pdptr_bits = X86_CR4_PGE | X86_CR4_PSE | X86_CR4_PAE |
- X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_PKE;
-
if (cr4 & CR4_RESERVED_BITS)
- return 1;
+ return -EINVAL;
if (!guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) && (cr4 & X86_CR4_OSXSAVE))
- return 1;
+ return -EINVAL;
if (!guest_cpuid_has(vcpu, X86_FEATURE_SMEP) && (cr4 & X86_CR4_SMEP))
- return 1;
+ return -EINVAL;
if (!guest_cpuid_has(vcpu, X86_FEATURE_SMAP) && (cr4 & X86_CR4_SMAP))
- return 1;
+ return -EINVAL;
if (!guest_cpuid_has(vcpu, X86_FEATURE_FSGSBASE) && (cr4 & X86_CR4_FSGSBASE))
- return 1;
+ return -EINVAL;
if (!guest_cpuid_has(vcpu, X86_FEATURE_PKU) && (cr4 & X86_CR4_PKE))
- return 1;
+ return -EINVAL;
if (!guest_cpuid_has(vcpu, X86_FEATURE_LA57) && (cr4 & X86_CR4_LA57))
- return 1;
+ return -EINVAL;
if (!guest_cpuid_has(vcpu, X86_FEATURE_UMIP) && (cr4 & X86_CR4_UMIP))
+ return -EINVAL;
+
+ return 0;
+}
+
+int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+{
+ unsigned long old_cr4 = kvm_read_cr4(vcpu);
+ unsigned long pdptr_bits = X86_CR4_PGE | X86_CR4_PSE | X86_CR4_PAE |
+ X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_PKE;
+
+ if (kvm_valid_cr4(vcpu, cr4))
return 1;
if (is_long_mode(vcpu)) {
@@ -8237,10 +8245,6 @@ EXPORT_SYMBOL_GPL(kvm_task_switch);
static int kvm_valid_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
{
- if (!guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) &&
- (sregs->cr4 & X86_CR4_OSXSAVE))
- return -EINVAL;
-
if ((sregs->efer & EFER_LME) && (sregs->cr0 & X86_CR0_PG)) {
/*
* When EFER.LME and CR0.PG are set, the processor is in
@@ -8259,7 +8263,7 @@ static int kvm_valid_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
return -EINVAL;
}
- return 0;
+ return kvm_valid_cr4(vcpu, sregs->cr4);
}
static int __set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index 10fb42da0007..b81b5172cf99 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -23,6 +23,7 @@ KCOV_INSTRUMENT := n
PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel
PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss
+PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN)
# Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That
# in turn leaves some undefined symbols like __fentry__ in purgatory and not
diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index b664cf867f5f..a8750b4ebf26 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -95,7 +95,7 @@ static inline u8 *skcipher_get_spot(u8 *start, unsigned int len)
return max(start, end_page);
}
-static void skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
+static int skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
{
u8 *addr;
@@ -103,19 +103,21 @@ static void skcipher_done_slow(struct skcipher_walk *walk, unsigned int bsize)
addr = skcipher_get_spot(addr, bsize);
scatterwalk_copychunks(addr, &walk->out, bsize,
(walk->flags & SKCIPHER_WALK_PHYS) ? 2 : 1);
+ return 0;
}
int skcipher_walk_done(struct skcipher_walk *walk, int err)
{
- unsigned int n; /* bytes processed */
- bool more;
+ unsigned int n = walk->nbytes;
+ unsigned int nbytes = 0;
- if (unlikely(err < 0))
+ if (!n)
goto finish;
- n = walk->nbytes - err;
- walk->total -= n;
- more = (walk->total != 0);
+ if (likely(err >= 0)) {
+ n -= err;
+ nbytes = walk->total - n;
+ }
if (likely(!(walk->flags & (SKCIPHER_WALK_PHYS |
SKCIPHER_WALK_SLOW |
@@ -131,7 +133,7 @@ int skcipher_walk_done(struct skcipher_walk *walk, int err)
memcpy(walk->dst.virt.addr, walk->page, n);
skcipher_unmap_dst(walk);
} else if (unlikely(walk->flags & SKCIPHER_WALK_SLOW)) {
- if (err) {
+ if (err > 0) {
/*
* Didn't process all bytes. Either the algorithm is
* broken, or this was the last step and it turned out
@@ -139,27 +141,29 @@ int skcipher_walk_done(struct skcipher_walk *walk, int err)
* the algorithm requires it.
*/
err = -EINVAL;
- goto finish;
- }
- skcipher_done_slow(walk, n);
- goto already_advanced;
+ nbytes = 0;
+ } else
+ n = skcipher_done_slow(walk, n);
}
+ if (err > 0)
+ err = 0;
+
+ walk->total = nbytes;
+ walk->nbytes = 0;
+
scatterwalk_advance(&walk->in, n);
scatterwalk_advance(&walk->out, n);
-already_advanced:
- scatterwalk_done(&walk->in, 0, more);
- scatterwalk_done(&walk->out, 1, more);
+ scatterwalk_done(&walk->in, 0, nbytes);
+ scatterwalk_done(&walk->out, 1, nbytes);
- if (more) {
+ if (nbytes) {
crypto_yield(walk->flags & SKCIPHER_WALK_SLEEP ?
CRYPTO_TFM_REQ_MAY_SLEEP : 0);
return skcipher_walk_next(walk);
}
- err = 0;
-finish:
- walk->nbytes = 0;
+finish:
/* Short-circuit for the common/fast path. */
if (!((unsigned long)walk->buffer | (unsigned long)walk->page))
goto out;
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index b1c7009de1f4..bc2fa4e85f0c 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -106,6 +106,7 @@ struct nbd_device {
struct nbd_config *config;
struct mutex config_lock;
struct gendisk *disk;
+ struct workqueue_struct *recv_workq;
struct list_head list;
struct task_struct *task_recv;
@@ -132,9 +133,10 @@ static struct dentry *nbd_dbg_dir;
#define NBD_MAGIC 0x68797548
+#define NBD_DEF_BLKSIZE 1024
+
static unsigned int nbds_max = 16;
static int max_part = 16;
-static struct workqueue_struct *recv_workqueue;
static int part_shift;
static int nbd_dev_dbg_init(struct nbd_device *nbd);
@@ -1025,7 +1027,7 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
/* We take the tx_mutex in an error path in the recv_work, so we
* need to queue_work outside of the tx_mutex.
*/
- queue_work(recv_workqueue, &args->work);
+ queue_work(nbd->recv_workq, &args->work);
atomic_inc(&config->live_connections);
wake_up(&config->conn_wait);
@@ -1126,6 +1128,10 @@ static void nbd_config_put(struct nbd_device *nbd)
kfree(nbd->config);
nbd->config = NULL;
+ if (nbd->recv_workq)
+ destroy_workqueue(nbd->recv_workq);
+ nbd->recv_workq = NULL;
+
nbd->tag_set.timeout = 0;
nbd->disk->queue->limits.discard_granularity = 0;
nbd->disk->queue->limits.discard_alignment = 0;
@@ -1154,6 +1160,14 @@ static int nbd_start_device(struct nbd_device *nbd)
return -EINVAL;
}
+ nbd->recv_workq = alloc_workqueue("knbd%d-recv",
+ WQ_MEM_RECLAIM | WQ_HIGHPRI |
+ WQ_UNBOUND, 0, nbd->index);
+ if (!nbd->recv_workq) {
+ dev_err(disk_to_dev(nbd->disk), "Could not allocate knbd recv work queue.\n");
+ return -ENOMEM;
+ }
+
blk_mq_update_nr_hw_queues(&nbd->tag_set, config->num_connections);
nbd->task_recv = current;
@@ -1184,7 +1198,7 @@ static int nbd_start_device(struct nbd_device *nbd)
INIT_WORK(&args->work, recv_work);
args->nbd = nbd;
args->index = i;
- queue_work(recv_workqueue, &args->work);
+ queue_work(nbd->recv_workq, &args->work);
}
nbd_size_update(nbd);
return error;
@@ -1204,8 +1218,10 @@ static int nbd_start_device_ioctl(struct nbd_device *nbd, struct block_device *b
mutex_unlock(&nbd->config_lock);
ret = wait_event_interruptible(config->recv_wq,
atomic_read(&config->recv_threads) == 0);
- if (ret)
+ if (ret) {
sock_shutdown(nbd);
+ flush_workqueue(nbd->recv_workq);
+ }
mutex_lock(&nbd->config_lock);
nbd_bdev_reset(bdev);
/* user requested, ignore socket errors */
@@ -1227,6 +1243,14 @@ static void nbd_clear_sock_ioctl(struct nbd_device *nbd,
nbd_config_put(nbd);
}
+static bool nbd_is_valid_blksize(unsigned long blksize)
+{
+ if (!blksize || !is_power_of_2(blksize) || blksize < 512 ||
+ blksize > PAGE_SIZE)
+ return false;
+ return true;
+}
+
/* Must be called with config_lock held */
static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
unsigned int cmd, unsigned long arg)
@@ -1242,8 +1266,9 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
case NBD_SET_SOCK:
return nbd_add_socket(nbd, arg, false);
case NBD_SET_BLKSIZE:
- if (!arg || !is_power_of_2(arg) || arg < 512 ||
- arg > PAGE_SIZE)
+ if (!arg)
+ arg = NBD_DEF_BLKSIZE;
+ if (!nbd_is_valid_blksize(arg))
return -EINVAL;
nbd_size_set(nbd, arg,
div_s64(config->bytesize, arg));
@@ -1323,7 +1348,7 @@ static struct nbd_config *nbd_alloc_config(void)
atomic_set(&config->recv_threads, 0);
init_waitqueue_head(&config->recv_wq);
init_waitqueue_head(&config->conn_wait);
- config->blksize = 1024;
+ config->blksize = NBD_DEF_BLKSIZE;
atomic_set(&config->live_connections, 0);
try_module_get(THIS_MODULE);
return config;
@@ -1759,6 +1784,12 @@ static int nbd_genl_connect(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]) {
u64 bsize =
nla_get_u64(info->attrs[NBD_ATTR_BLOCK_SIZE_BYTES]);
+ if (!bsize)
+ bsize = NBD_DEF_BLKSIZE;
+ if (!nbd_is_valid_blksize(bsize)) {
+ ret = -EINVAL;
+ goto out;
+ }
nbd_size_set(nbd, bsize, div64_u64(config->bytesize, bsize));
}
if (info->attrs[NBD_ATTR_TIMEOUT]) {
@@ -1835,6 +1866,12 @@ static void nbd_disconnect_and_put(struct nbd_device *nbd)
nbd_disconnect(nbd);
nbd_clear_sock(nbd);
mutex_unlock(&nbd->config_lock);
+ /*
+ * Make sure recv thread has finished, so it does not drop the last
+ * config ref and try to destroy the workqueue from inside the work
+ * queue.
+ */
+ flush_workqueue(nbd->recv_workq);
if (test_and_clear_bit(NBD_HAS_CONFIG_REF,
&nbd->config->runtime_flags))
nbd_config_put(nbd);
@@ -2215,20 +2252,12 @@ static int __init nbd_init(void)
if (nbds_max > 1UL << (MINORBITS - part_shift))
return -EINVAL;
- recv_workqueue = alloc_workqueue("knbd-recv",
- WQ_MEM_RECLAIM | WQ_HIGHPRI |
- WQ_UNBOUND, 0);
- if (!recv_workqueue)
- return -ENOMEM;
- if (register_blkdev(NBD_MAJOR, "nbd")) {
- destroy_workqueue(recv_workqueue);
+ if (register_blkdev(NBD_MAJOR, "nbd"))
return -EIO;
- }
if (genl_register_family(&nbd_genl_family)) {
unregister_blkdev(NBD_MAJOR, "nbd");
- destroy_workqueue(recv_workqueue);
return -EINVAL;
}
nbd_dbg_init();
@@ -2270,7 +2299,6 @@ static void __exit nbd_cleanup(void)
idr_destroy(&nbd_index_idr);
genl_unregister_family(&nbd_genl_family);
- destroy_workqueue(recv_workqueue);
unregister_blkdev(NBD_MAJOR, "nbd");
}
diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c
index a408edd84f34..edacf9b39b63 100644
--- a/drivers/crypto/caam/caamalg_desc.c
+++ b/drivers/crypto/caam/caamalg_desc.c
@@ -509,6 +509,7 @@ void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata,
const bool is_qi, int era)
{
u32 geniv, moveiv;
+ u32 *wait_cmd;
/* Note: Context registers are saved. */
init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce, era);
@@ -604,6 +605,14 @@ void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata,
/* Will read cryptlen */
append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ);
+
+ /*
+ * Wait for IV transfer (ofifo -> class2) to finish before starting
+ * ciphertext transfer (ofifo -> external memory).
+ */
+ wait_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | JUMP_COND_NIFP);
+ set_jump_tgt_here(desc, wait_cmd);
+
append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | KEY_VLF |
FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LASTBOTH);
append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF);
diff --git a/drivers/crypto/caam/caamalg_desc.h b/drivers/crypto/caam/caamalg_desc.h
index a917af5776ce..05516b0a4240 100644
--- a/drivers/crypto/caam/caamalg_desc.h
+++ b/drivers/crypto/caam/caamalg_desc.h
@@ -12,7 +12,7 @@
#define DESC_AEAD_BASE (4 * CAAM_CMD_SZ)
#define DESC_AEAD_ENC_LEN (DESC_AEAD_BASE + 11 * CAAM_CMD_SZ)
#define DESC_AEAD_DEC_LEN (DESC_AEAD_BASE + 15 * CAAM_CMD_SZ)
-#define DESC_AEAD_GIVENC_LEN (DESC_AEAD_ENC_LEN + 7 * CAAM_CMD_SZ)
+#define DESC_AEAD_GIVENC_LEN (DESC_AEAD_ENC_LEN + 8 * CAAM_CMD_SZ)
#define DESC_QI_AEAD_ENC_LEN (DESC_AEAD_ENC_LEN + 3 * CAAM_CMD_SZ)
#define DESC_QI_AEAD_DEC_LEN (DESC_AEAD_DEC_LEN + 3 * CAAM_CMD_SZ)
#define DESC_QI_AEAD_GIVENC_LEN (DESC_AEAD_GIVENC_LEN + 3 * CAAM_CMD_SZ)
diff --git a/drivers/crypto/cavium/zip/zip_main.c b/drivers/crypto/cavium/zip/zip_main.c
index 6183f9128a8a..ea901bc5733c 100644
--- a/drivers/crypto/cavium/zip/zip_main.c
+++ b/drivers/crypto/cavium/zip/zip_main.c
@@ -593,6 +593,7 @@ static const struct file_operations zip_stats_fops = {
.owner = THIS_MODULE,
.open = zip_stats_open,
.read = seq_read,
+ .release = single_release,
};
static int zip_clear_open(struct inode *inode, struct file *file)
@@ -604,6 +605,7 @@ static const struct file_operations zip_clear_fops = {
.owner = THIS_MODULE,
.open = zip_clear_open,
.read = seq_read,
+ .release = single_release,
};
static int zip_regs_open(struct inode *inode, struct file *file)
@@ -615,6 +617,7 @@ static const struct file_operations zip_regs_fops = {
.owner = THIS_MODULE,
.open = zip_regs_open,
.read = seq_read,
+ .release = single_release,
};
/* Root directory for thunderx_zip debugfs entry */
diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index 0669033f5be5..aa6b45bc13b9 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -227,7 +227,7 @@ static void cc_aead_complete(struct device *dev, void *cc_req, int err)
/* In case of payload authentication failure, MUST NOT
* revealed the decrypted message --> zero its memory.
*/
- cc_zero_sgl(areq->dst, areq_ctx->cryptlen);
+ cc_zero_sgl(areq->dst, areq->cryptlen);
err = -EBADMSG;
}
} else { /*ENCRYPT*/
diff --git a/drivers/crypto/ccree/cc_fips.c b/drivers/crypto/ccree/cc_fips.c
index 09f708f6418e..bac278d274b0 100644
--- a/drivers/crypto/ccree/cc_fips.c
+++ b/drivers/crypto/ccree/cc_fips.c
@@ -21,7 +21,13 @@ static bool cc_get_tee_fips_status(struct cc_drvdata *drvdata)
u32 reg;
reg = cc_ioread(drvdata, CC_REG(GPR_HOST));
- return (reg == (CC_FIPS_SYNC_TEE_STATUS | CC_FIPS_SYNC_MODULE_OK));
+ /* Did the TEE report status? */
+ if (reg & CC_FIPS_SYNC_TEE_STATUS)
+ /* Yes. Is it OK? */
+ return (reg & CC_FIPS_SYNC_MODULE_OK);
+
+ /* No. It's either not in use or will be reported later */
+ return true;
}
/*
diff --git a/drivers/crypto/qat/qat_common/adf_common_drv.h b/drivers/crypto/qat/qat_common/adf_common_drv.h
index 5c4c0a253129..d78f8d5c89c3 100644
--- a/drivers/crypto/qat/qat_common/adf_common_drv.h
+++ b/drivers/crypto/qat/qat_common/adf_common_drv.h
@@ -95,7 +95,7 @@ struct service_hndl {
static inline int get_current_node(void)
{
- return topology_physical_package_id(smp_processor_id());
+ return topology_physical_package_id(raw_smp_processor_id());
}
int adf_service_register(struct service_hndl *service);
diff --git a/drivers/devfreq/tegra-devfreq.c b/drivers/devfreq/tegra-devfreq.c
index c59d2eee5d30..06768074d2d8 100644
--- a/drivers/devfreq/tegra-devfreq.c
+++ b/drivers/devfreq/tegra-devfreq.c
@@ -486,11 +486,11 @@ static int tegra_devfreq_target(struct device *dev, unsigned long *freq,
{
struct tegra_devfreq *tegra = dev_get_drvdata(dev);
struct dev_pm_opp *opp;
- unsigned long rate = *freq * KHZ;
+ unsigned long rate;
- opp = devfreq_recommended_opp(dev, &rate, flags);
+ opp = devfreq_recommended_opp(dev, freq, flags);
if (IS_ERR(opp)) {
- dev_err(dev, "Failed to find opp for %lu KHz\n", *freq);
+ dev_err(dev, "Failed to find opp for %lu Hz\n", *freq);
return PTR_ERR(opp);
}
rate = dev_pm_opp_get_freq(opp);
@@ -499,8 +499,6 @@ static int tegra_devfreq_target(struct device *dev, unsigned long *freq,
clk_set_min_rate(tegra->emc_clock, rate);
clk_set_rate(tegra->emc_clock, 0);
- *freq = rate;
-
return 0;
}
@@ -510,7 +508,7 @@ static int tegra_devfreq_get_dev_status(struct device *dev,
struct tegra_devfreq *tegra = dev_get_drvdata(dev);
struct tegra_devfreq_device *actmon_dev;
- stat->current_frequency = tegra->cur_freq;
+ stat->current_frequency = tegra->cur_freq * KHZ;
/* To be used by the tegra governor */
stat->private_data = tegra;
@@ -565,7 +563,7 @@ static int tegra_governor_get_target(struct devfreq *devfreq,
target_freq = max(target_freq, dev->target_freq);
}
- *freq = target_freq;
+ *freq = target_freq * KHZ;
return 0;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 51b5e977ca88..f4e9d1b10e3e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -139,7 +139,8 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
/* ring tests don't use a job */
if (job) {
vm = job->vm;
- fence_ctx = job->base.s_fence->scheduled.context;
+ fence_ctx = job->base.s_fence ?
+ job->base.s_fence->scheduled.context : 0;
} else {
vm = NULL;
fence_ctx = 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index c0396e83f352..fc93b103f777 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -562,6 +562,9 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
if (sh_num == AMDGPU_INFO_MMR_SH_INDEX_MASK)
sh_num = 0xffffffff;
+ if (info->read_mmr_reg.count > 128)
+ return -EINVAL;
+
regs = kmalloc_array(info->read_mmr_reg.count, sizeof(*regs), GFP_KERNEL);
if (!regs)
return -ENOMEM;
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 663a7c9ca3d3..d0e216d85a22 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -1276,9 +1276,6 @@ static int prepare_mm(struct intel_vgpu_workload *workload)
#define same_context(a, b) (((a)->context_id == (b)->context_id) && \
((a)->lrca == (b)->lrca))
-#define get_last_workload(q) \
- (list_empty(q) ? NULL : container_of(q->prev, \
- struct intel_vgpu_workload, list))
/**
* intel_vgpu_create_workload - create a vGPU workload
* @vgpu: a vGPU
@@ -1297,7 +1294,7 @@ intel_vgpu_create_workload(struct intel_vgpu *vgpu, int ring_id,
{
struct intel_vgpu_submission *s = &vgpu->submission;
struct list_head *q = workload_q_head(vgpu, ring_id);
- struct intel_vgpu_workload *last_workload = get_last_workload(q);
+ struct intel_vgpu_workload *last_workload = NULL;
struct intel_vgpu_workload *workload = NULL;
struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
u64 ring_context_gpa;
@@ -1320,15 +1317,20 @@ intel_vgpu_create_workload(struct intel_vgpu *vgpu, int ring_id,
head &= RB_HEAD_OFF_MASK;
tail &= RB_TAIL_OFF_MASK;
- if (last_workload && same_context(&last_workload->ctx_desc, desc)) {
- gvt_dbg_el("ring id %d cur workload == last\n", ring_id);
- gvt_dbg_el("ctx head %x real head %lx\n", head,
- last_workload->rb_tail);
- /*
- * cannot use guest context head pointer here,
- * as it might not be updated at this time
- */
- head = last_workload->rb_tail;
+ list_for_each_entry_reverse(last_workload, q, list) {
+
+ if (same_context(&last_workload->ctx_desc, desc)) {
+ gvt_dbg_el("ring id %d cur workload == last\n",
+ ring_id);
+ gvt_dbg_el("ctx head %x real head %lx\n", head,
+ last_workload->rb_tail);
+ /*
+ * cannot use guest context head pointer here,
+ * as it might not be updated at this time
+ */
+ head = last_workload->rb_tail;
+ break;
+ }
}
gvt_dbg_el("ring id %d begin a new workload\n", ring_id);
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 96fb5f635314..cc4ea5502d6c 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -429,15 +429,15 @@ static int dsi_clk_init(struct msm_dsi_host *msm_host)
}
msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk);
- if (!msm_host->byte_clk_src) {
- ret = -ENODEV;
+ if (IS_ERR(msm_host->byte_clk_src)) {
+ ret = PTR_ERR(msm_host->byte_clk_src);
pr_err("%s: can't find byte_clk clock. ret=%d\n", __func__, ret);
goto exit;
}
msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk);
- if (!msm_host->pixel_clk_src) {
- ret = -ENODEV;
+ if (IS_ERR(msm_host->pixel_clk_src)) {
+ ret = PTR_ERR(msm_host->pixel_clk_src);
pr_err("%s: can't find pixel_clk clock. ret=%d\n", __func__, ret);
goto exit;
}
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 5e01bfb69d7a..10107e551fac 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -1517,7 +1517,8 @@ nv50_sor_create(struct drm_connector *connector, struct dcb_output *dcbe)
nv_encoder->aux = aux;
}
- if ((data = nvbios_dp_table(bios, &ver, &hdr, &cnt, &len)) &&
+ if (nv_connector->type != DCB_CONNECTOR_eDP &&
+ (data = nvbios_dp_table(bios, &ver, &hdr, &cnt, &len)) &&
ver >= 0x40 && (nvbios_rd08(bios, data + 0x08) & 0x04)) {
ret = nv50_mstm_new(nv_encoder, &nv_connector->aux, 16,
nv_connector->base.base.id,
diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
index cb80ddaa19d2..7e9e2f064454 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss.c
@@ -1110,7 +1110,7 @@ static const struct dss_features omap34xx_dss_feats = {
static const struct dss_features omap3630_dss_feats = {
.model = DSS_MODEL_OMAP3,
- .fck_div_max = 32,
+ .fck_div_max = 31,
.fck_freq_max = 173000000,
.dss_fck_multiplier = 1,
.parent_clk_name = "dpll4_ck",
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 25b5407c74b5..d83310751a8e 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -340,8 +340,39 @@ static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
static int radeon_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
+ unsigned long flags = 0;
int ret;
+ if (!ent)
+ return -ENODEV; /* Avoid NULL-ptr deref in drm_get_pci_dev */
+
+ flags = ent->driver_data;
+
+ if (!radeon_si_support) {
+ switch (flags & RADEON_FAMILY_MASK) {
+ case CHIP_TAHITI:
+ case CHIP_PITCAIRN:
+ case CHIP_VERDE:
+ case CHIP_OLAND:
+ case CHIP_HAINAN:
+ dev_info(&pdev->dev,
+ "SI support disabled by module param\n");
+ return -ENODEV;
+ }
+ }
+ if (!radeon_cik_support) {
+ switch (flags & RADEON_FAMILY_MASK) {
+ case CHIP_KAVERI:
+ case CHIP_BONAIRE:
+ case CHIP_HAWAII:
+ case CHIP_KABINI:
+ case CHIP_MULLINS:
+ dev_info(&pdev->dev,
+ "CIK support disabled by module param\n");
+ return -ENODEV;
+ }
+ }
+
if (vga_switcheroo_client_probe_defer(pdev))
return -EPROBE_DEFER;
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 6a8fb6fd183c..3ff835767ac5 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -95,31 +95,6 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
struct radeon_device *rdev;
int r, acpi_status;
- if (!radeon_si_support) {
- switch (flags & RADEON_FAMILY_MASK) {
- case CHIP_TAHITI:
- case CHIP_PITCAIRN:
- case CHIP_VERDE:
- case CHIP_OLAND:
- case CHIP_HAINAN:
- dev_info(dev->dev,
- "SI support disabled by module param\n");
- return -ENODEV;
- }
- }
- if (!radeon_cik_support) {
- switch (flags & RADEON_FAMILY_MASK) {
- case CHIP_KAVERI:
- case CHIP_BONAIRE:
- case CHIP_HAWAII:
- case CHIP_KABINI:
- case CHIP_MULLINS:
- dev_info(dev->dev,
- "CIK support disabled by module param\n");
- return -ENODEV;
- }
- }
-
rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
if (rdev == NULL) {
return -ENOMEM;
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index 2bce7cf0b0af..e45b5ec2f451 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -174,6 +174,12 @@ static void etm4_enable_hw(void *info)
if (coresight_timeout(drvdata->base, TRCSTATR, TRCSTATR_IDLE_BIT, 0))
dev_err(drvdata->dev,
"timeout while waiting for Idle Trace Status\n");
+ /*
+ * As recommended by section 4.3.7 ("Synchronization when using the
+ * memory-mapped interface") of ARM IHI 0064D
+ */
+ dsb(sy);
+ isb();
CS_LOCK(drvdata->base);
@@ -324,8 +330,12 @@ static void etm4_disable_hw(void *info)
/* EN, bit[0] Trace unit enable bit */
control &= ~0x1;
- /* make sure everything completes before disabling */
- mb();
+ /*
+ * Make sure everything completes before disabling, as recommended
+ * by section 7.3.77 ("TRCVICTLR, ViewInst Main Control Register,
+ * SSTATUS") of ARM IHI 0064D
+ */
+ dsb(sy);
isb();
writel_relaxed(control, drvdata->base + TRCPRGCTLR);
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index e5c598ae5f24..6627523e728b 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -480,7 +480,12 @@ static int esdhc_of_enable_dma(struct sdhci_host *host)
dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
value = sdhci_readl(host, ESDHC_DMA_SYSCTL);
- value |= ESDHC_DMA_SNOOP;
+
+ if (of_dma_is_coherent(dev->of_node))
+ value |= ESDHC_DMA_SNOOP;
+ else
+ value &= ~ESDHC_DMA_SNOOP;
+
sdhci_writel(host, value, ESDHC_DMA_SYSCTL);
return 0;
}
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index eb33b892b484..e99d5632d8fa 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2720,6 +2720,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
static void sdhci_adma_show_error(struct sdhci_host *host)
{
void *desc = host->adma_table;
+ dma_addr_t dma = host->adma_addr;
sdhci_dumpregs(host);
@@ -2727,18 +2728,21 @@ static void sdhci_adma_show_error(struct sdhci_host *host)
struct sdhci_adma2_64_desc *dma_desc = desc;
if (host->flags & SDHCI_USE_64_BIT_DMA)
- DBG("%p: DMA 0x%08x%08x, LEN 0x%04x, Attr=0x%02x\n",
- desc, le32_to_cpu(dma_desc->addr_hi),
+ SDHCI_DUMP("%08llx: DMA 0x%08x%08x, LEN 0x%04x, Attr=0x%02x\n",
+ (unsigned long long)dma,
+ le32_to_cpu(dma_desc->addr_hi),
le32_to_cpu(dma_desc->addr_lo),
le16_to_cpu(dma_desc->len),
le16_to_cpu(dma_desc->cmd));
else
- DBG("%p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
- desc, le32_to_cpu(dma_desc->addr_lo),
+ SDHCI_DUMP("%08llx: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
+ (unsigned long long)dma,
+ le32_to_cpu(dma_desc->addr_lo),
le16_to_cpu(dma_desc->len),
le16_to_cpu(dma_desc->cmd));
desc += host->desc_sz;
+ dma += host->desc_sz;
if (dma_desc->cmd & cpu_to_le16(ADMA2_END))
break;
@@ -2814,7 +2818,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
!= MMC_BUS_TEST_R)
host->data->error = -EILSEQ;
else if (intmask & SDHCI_INT_ADMA_ERROR) {
- pr_err("%s: ADMA error\n", mmc_hostname(host->mmc));
+ pr_err("%s: ADMA error: 0x%08x\n", mmc_hostname(host->mmc),
+ intmask);
sdhci_adma_show_error(host);
host->data->error = -EIO;
if (host->ops->adma_workaround)
diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c
index fccb6bf21fad..de8d9dceb123 100644
--- a/drivers/net/can/spi/mcp251x.c
+++ b/drivers/net/can/spi/mcp251x.c
@@ -626,7 +626,7 @@ static int mcp251x_setup(struct net_device *net, struct spi_device *spi)
static int mcp251x_hw_reset(struct spi_device *spi)
{
struct mcp251x_priv *priv = spi_get_drvdata(spi);
- u8 reg;
+ unsigned long timeout;
int ret;
/* Wait for oscillator startup timer after power up */
@@ -640,10 +640,19 @@ static int mcp251x_hw_reset(struct spi_device *spi)
/* Wait for oscillator startup timer after reset */
mdelay(MCP251X_OST_DELAY_MS);
- reg = mcp251x_read_reg(spi, CANSTAT);
- if ((reg & CANCTRL_REQOP_MASK) != CANCTRL_REQOP_CONF)
- return -ENODEV;
-
+ /* Wait for reset to finish */
+ timeout = jiffies + HZ;
+ while ((mcp251x_read_reg(spi, CANSTAT) & CANCTRL_REQOP_MASK) !=
+ CANCTRL_REQOP_CONF) {
+ usleep_range(MCP251X_OST_DELAY_MS * 1000,
+ MCP251X_OST_DELAY_MS * 1000 * 2);
+
+ if (time_after(jiffies, timeout)) {
+ dev_err(&spi->dev,
+ "MCP251x didn't enter in conf mode after reset\n");
+ return -EBUSY;
+ }
+ }
return 0;
}
diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c
index 22c572a09b32..c19e88efe958 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
@@ -272,6 +272,7 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
port = nfp_port_alloc(app, port_type, repr);
if (IS_ERR(port)) {
err = PTR_ERR(port);
+ kfree(repr_priv);
nfp_repr_free(repr);
goto err_reprs_clean;
}
diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c
index 4f684cbcdc57..078027bbe002 100644
--- a/drivers/net/ieee802154/atusb.c
+++ b/drivers/net/ieee802154/atusb.c
@@ -1140,10 +1140,11 @@ static void atusb_disconnect(struct usb_interface *interface)
ieee802154_unregister_hw(atusb->hw);
+ usb_put_dev(atusb->usb_dev);
+
ieee802154_free_hw(atusb->hw);
usb_set_intfdata(interface, NULL);
- usb_put_dev(atusb->usb_dev);
pr_debug("%s done\n", __func__);
}
diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
index 2a9d6b0d1f19..80508da3c8b5 100644
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -1373,7 +1373,7 @@ static int perf_setup_peer_mw(struct perf_peer *peer)
int ret;
/* Get outbound MW parameters and map it */
- ret = ntb_peer_mw_get_addr(perf->ntb, peer->gidx, &phys_addr,
+ ret = ntb_peer_mw_get_addr(perf->ntb, perf->gidx, &phys_addr,
&peer->outbuf_size);
if (ret)
return ret;
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 2ba22cd1331b..54a633e8cb5d 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -189,7 +189,7 @@ static int nvdimm_clear_badblocks_region(struct device *dev, void *data)
sector_t sector;
/* make sure device is a region */
- if (!is_nd_pmem(dev))
+ if (!is_memory(dev))
return 0;
nd_region = to_nd_region(dev);
diff --git a/drivers/nvdimm/region.c b/drivers/nvdimm/region.c
index f9130cc157e8..22224b21c34d 100644
--- a/drivers/nvdimm/region.c
+++ b/drivers/nvdimm/region.c
@@ -42,7 +42,7 @@ static int nd_region_probe(struct device *dev)
if (rc)
return rc;
- if (is_nd_pmem(&nd_region->dev)) {
+ if (is_memory(&nd_region->dev)) {
struct resource ndr_res;
if (devm_init_badblocks(dev, &nd_region->bb))
@@ -131,7 +131,7 @@ static void nd_region_notify(struct device *dev, enum nvdimm_event event)
struct nd_region *nd_region = to_nd_region(dev);
struct resource res;
- if (is_nd_pmem(&nd_region->dev)) {
+ if (is_memory(&nd_region->dev)) {
res.start = nd_region->ndr_start;
res.end = nd_region->ndr_start +
nd_region->ndr_size - 1;
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index 0303296e6d5b..609fc450522a 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -633,11 +633,11 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
if (!is_memory(dev) && a == &dev_attr_dax_seed.attr)
return 0;
- if (!is_nd_pmem(dev) && a == &dev_attr_badblocks.attr)
+ if (!is_memory(dev) && a == &dev_attr_badblocks.attr)
return 0;
if (a == &dev_attr_resource.attr) {
- if (is_nd_pmem(dev))
+ if (is_memory(dev))
return 0400;
else
return 0;
diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c
index fd2dbd7eed7b..52d4fa4161dc 100644
--- a/drivers/pci/controller/vmd.c
+++ b/drivers/pci/controller/vmd.c
@@ -31,6 +31,9 @@
#define PCI_REG_VMLOCK 0x70
#define MB2_SHADOW_EN(vmlock) (vmlock & 0x2)
+#define MB2_SHADOW_OFFSET 0x2000
+#define MB2_SHADOW_SIZE 16
+
enum vmd_features {
/*
* Device may contain registers which hint the physical location of the
@@ -600,7 +603,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
u32 vmlock;
int ret;
- membar2_offset = 0x2018;
+ membar2_offset = MB2_SHADOW_OFFSET + MB2_SHADOW_SIZE;
ret = pci_read_config_dword(vmd->dev, PCI_REG_VMLOCK, &vmlock);
if (ret || vmlock == ~0)
return -ENODEV;
@@ -612,9 +615,9 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
if (!membar2)
return -ENOMEM;
offset[0] = vmd->dev->resource[VMD_MEMBAR1].start -
- readq(membar2 + 0x2008);
+ readq(membar2 + MB2_SHADOW_OFFSET);
offset[1] = vmd->dev->resource[VMD_MEMBAR2].start -
- readq(membar2 + 0x2010);
+ readq(membar2 + MB2_SHADOW_OFFSET + 8);
pci_iounmap(vmd->dev, membar2);
}
}
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c65465385d8c..6384930a6749 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1366,7 +1366,7 @@ static void pci_restore_rebar_state(struct pci_dev *pdev)
pci_read_config_dword(pdev, pos + PCI_REBAR_CTRL, &ctrl);
bar_idx = ctrl & PCI_REBAR_CTRL_BAR_IDX;
res = pdev->resource + bar_idx;
- size = order_base_2((resource_size(res) >> 20) | 1) - 1;
+ size = ilog2(resource_size(res)) - 20;
ctrl &= ~PCI_REBAR_CTRL_BAR_SIZE;
ctrl |= size << PCI_REBAR_CTRL_BAR_SHIFT;
pci_write_config_dword(pdev, pos + PCI_REBAR_CTRL, ctrl);
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index 8ba6abf584de..3958ee03eec1 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -323,17 +323,22 @@ static int sbs_get_battery_presence_and_health(
{
int ret;
- if (psp == POWER_SUPPLY_PROP_PRESENT) {
- /* Dummy command; if it succeeds, battery is present. */
- ret = sbs_read_word_data(client, sbs_data[REG_STATUS].addr);
- if (ret < 0)
- val->intval = 0; /* battery disconnected */
- else
- val->intval = 1; /* battery present */
- } else { /* POWER_SUPPLY_PROP_HEALTH */
+ /* Dummy command; if it succeeds, battery is present. */
+ ret = sbs_read_word_data(client, sbs_data[REG_STATUS].addr);
+
+ if (ret < 0) { /* battery not present*/
+ if (psp == POWER_SUPPLY_PROP_PRESENT) {
+ val->intval = 0;
+ return 0;
+ }
+ return ret;
+ }
+
+ if (psp == POWER_SUPPLY_PROP_PRESENT)
+ val->intval = 1; /* battery present */
+ else /* POWER_SUPPLY_PROP_HEALTH */
/* SBS spec doesn't have a general health command. */
val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
- }
return 0;
}
@@ -629,12 +634,14 @@ static int sbs_get_property(struct power_supply *psy,
switch (psp) {
case POWER_SUPPLY_PROP_PRESENT:
case POWER_SUPPLY_PROP_HEALTH:
- if (client->flags & SBS_FLAGS_TI_BQ20Z75)
+ if (chip->flags & SBS_FLAGS_TI_BQ20Z75)
ret = sbs_get_ti_battery_presence_and_health(client,
psp, val);
else
ret = sbs_get_battery_presence_and_health(client, psp,
val);
+
+ /* this can only be true if no gpio is used */
if (psp == POWER_SUPPLY_PROP_PRESENT)
return 0;
break;
diff --git a/drivers/pwm/pwm-stm32-lp.c b/drivers/pwm/pwm-stm32-lp.c
index 0059b24cfdc3..28e1f6413476 100644
--- a/drivers/pwm/pwm-stm32-lp.c
+++ b/drivers/pwm/pwm-stm32-lp.c
@@ -58,6 +58,12 @@ static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm,
/* Calculate the period and prescaler value */
div = (unsigned long long)clk_get_rate(priv->clk) * state->period;
do_div(div, NSEC_PER_SEC);
+ if (!div) {
+ /* Clock is too slow to achieve requested period. */
+ dev_dbg(priv->chip.dev, "Can't reach %u ns\n", state->period);
+ return -EINVAL;
+ }
+
prd = div;
while (div > STM32_LPTIM_MAX_ARR) {
presc++;
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 93b2862bd3fa..674d848e377c 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -372,7 +372,7 @@ int ccwgroup_create_dev(struct device *parent, struct ccwgroup_driver *gdrv,
goto error;
}
/* Check for trailing stuff. */
- if (i == num_devices && strlen(buf) > 0) {
+ if (i == num_devices && buf && strlen(buf) > 0) {
rc = -EINVAL;
goto error;
}
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index aea502922646..df09ed53ab45 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -1213,6 +1213,8 @@ device_initcall(cio_settle_init);
int sch_is_pseudo_sch(struct subchannel *sch)
{
+ if (!sch->dev.parent)
+ return 0;
return sch == to_css(sch->dev.parent)->pseudo_subchannel;
}
diff --git a/drivers/staging/erofs/dir.c b/drivers/staging/erofs/dir.c
index 0a089cf5c78f..fe6683effd05 100644
--- a/drivers/staging/erofs/dir.c
+++ b/drivers/staging/erofs/dir.c
@@ -100,8 +100,15 @@ static int erofs_readdir(struct file *f, struct dir_context *ctx)
unsigned nameoff, maxsize;
dentry_page = read_mapping_page(mapping, i, NULL);
- if (IS_ERR(dentry_page))
- continue;
+ if (dentry_page == ERR_PTR(-ENOMEM)) {
+ err = -ENOMEM;
+ break;
+ } else if (IS_ERR(dentry_page)) {
+ errln("fail to readdir of logical block %u of nid %llu",
+ i, EROFS_V(dir)->nid);
+ err = PTR_ERR(dentry_page);
+ break;
+ }
lock_page(dentry_page);
de = (struct erofs_dirent *)kmap(dentry_page);
diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
index ad6fe6d9d00a..0f1558c6747e 100644
--- a/drivers/staging/erofs/unzip_vle.c
+++ b/drivers/staging/erofs/unzip_vle.c
@@ -311,7 +311,11 @@ z_erofs_vle_work_lookup(struct super_block *sb,
/* if multiref is disabled, `primary' is always true */
primary = true;
- DBG_BUGON(work->pageofs != pageofs);
+ if (work->pageofs != pageofs) {
+ DBG_BUGON(1);
+ erofs_workgroup_put(egrp);
+ return ERR_PTR(-EIO);
+ }
/*
* lock must be taken first to avoid grp->next == NIL between
@@ -853,6 +857,7 @@ static int z_erofs_vle_unzip(struct super_block *sb,
for (i = 0; i < nr_pages; ++i)
pages[i] = NULL;
+ err = 0;
z_erofs_pagevec_ctor_init(&ctor,
Z_EROFS_VLE_INLINE_PAGEVECS, work->pagevec, 0);
@@ -874,8 +879,17 @@ static int z_erofs_vle_unzip(struct super_block *sb,
pagenr = z_erofs_onlinepage_index(page);
DBG_BUGON(pagenr >= nr_pages);
- DBG_BUGON(pages[pagenr]);
+ /*
+ * currently EROFS doesn't support multiref(dedup),
+ * so here erroring out one multiref page.
+ */
+ if (pages[pagenr]) {
+ DBG_BUGON(1);
+ SetPageError(pages[pagenr]);
+ z_erofs_onlinepage_endio(pages[pagenr]);
+ err = -EIO;
+ }
pages[pagenr] = page;
}
sparsemem_pages = i;
@@ -885,7 +899,6 @@ static int z_erofs_vle_unzip(struct super_block *sb,
overlapped = false;
compressed_pages = grp->compressed_pages;
- err = 0;
for (i = 0; i < clusterpages; ++i) {
unsigned pagenr;
@@ -911,7 +924,12 @@ static int z_erofs_vle_unzip(struct super_block *sb,
pagenr = z_erofs_onlinepage_index(page);
DBG_BUGON(pagenr >= nr_pages);
- DBG_BUGON(pages[pagenr]);
+ if (pages[pagenr]) {
+ DBG_BUGON(1);
+ SetPageError(pages[pagenr]);
+ z_erofs_onlinepage_endio(pages[pagenr]);
+ err = -EIO;
+ }
++sparsemem_pages;
pages[pagenr] = page;
@@ -1335,19 +1353,18 @@ static int z_erofs_vle_normalaccess_readpage(struct file *file,
err = z_erofs_do_read_page(&f, page, &pagepool);
(void)z_erofs_vle_work_iter_end(&f.builder);
- if (err) {
+ /* if some compressed cluster ready, need submit them anyway */
+ z_erofs_submit_and_unzip(&f, &pagepool, true);
+
+ if (err)
errln("%s, failed to read, err [%d]", __func__, err);
- goto out;
- }
- z_erofs_submit_and_unzip(&f, &pagepool, true);
-out:
if (f.m_iter.mpage != NULL)
put_page(f.m_iter.mpage);
/* clean up the remaining free pages */
put_pages_list(&pagepool);
- return 0;
+ return err;
}
static inline int __z_erofs_vle_normalaccess_readpages(
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index bf9721fc2824..be3eafc7682b 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -296,7 +296,7 @@ static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
mod_delayed_work(system_freezable_wq, &tz->poll_queue,
msecs_to_jiffies(delay));
else
- cancel_delayed_work(&tz->poll_queue);
+ cancel_delayed_work_sync(&tz->poll_queue);
}
static void monitor_thermal_zone(struct thermal_zone_device *tz)
diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
index 40c69a533b24..dd5d8ee37928 100644
--- a/drivers/thermal/thermal_hwmon.c
+++ b/drivers/thermal/thermal_hwmon.c
@@ -87,13 +87,17 @@ static struct thermal_hwmon_device *
thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
{
struct thermal_hwmon_device *hwmon;
+ char type[THERMAL_NAME_LENGTH];
mutex_lock(&thermal_hwmon_list_lock);
- list_for_each_entry(hwmon, &thermal_hwmon_list, node)
- if (!strcmp(hwmon->type, tz->type)) {
+ list_for_each_entry(hwmon, &thermal_hwmon_list, node) {
+ strcpy(type, tz->type);
+ strreplace(type, '-', '_');
+ if (!strcmp(hwmon->type, type)) {
mutex_unlock(&thermal_hwmon_list_lock);
return hwmon;
}
+ }
mutex_unlock(&thermal_hwmon_list_lock);
return NULL;
diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c
index 1abe4d021fd2..ffde179a9bb2 100644
--- a/drivers/watchdog/aspeed_wdt.c
+++ b/drivers/watchdog/aspeed_wdt.c
@@ -38,6 +38,7 @@ static const struct aspeed_wdt_config ast2500_config = {
static const struct of_device_id aspeed_wdt_of_table[] = {
{ .compatible = "aspeed,ast2400-wdt", .data = &ast2400_config },
{ .compatible = "aspeed,ast2500-wdt", .data = &ast2500_config },
+ { .compatible = "aspeed,ast2600-wdt", .data = &ast2500_config },
{ },
};
MODULE_DEVICE_TABLE(of, aspeed_wdt_of_table);
@@ -264,7 +265,8 @@ static int aspeed_wdt_probe(struct platform_device *pdev)
set_bit(WDOG_HW_RUNNING, &wdt->wdd.status);
}
- if (of_device_is_compatible(np, "aspeed,ast2500-wdt")) {
+ if ((of_device_is_compatible(np, "aspeed,ast2500-wdt")) ||
+ (of_device_is_compatible(np, "aspeed,ast2600-wdt"))) {
u32 reg = readl(wdt->base + WDT_RESET_WIDTH);
reg &= config->ext_pulse_width_mask;
diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c
index 7e7bdcbbc741..9f3123b04536 100644
--- a/drivers/watchdog/imx2_wdt.c
+++ b/drivers/watchdog/imx2_wdt.c
@@ -55,7 +55,7 @@
#define IMX2_WDT_WMCR 0x08 /* Misc Register */
-#define IMX2_WDT_MAX_TIME 128
+#define IMX2_WDT_MAX_TIME 128U
#define IMX2_WDT_DEFAULT_TIME 60 /* in seconds */
#define WDOG_SEC_TO_COUNT(s) ((s * 2 - 1) << 8)
@@ -180,7 +180,7 @@ static int imx2_wdt_set_timeout(struct watchdog_device *wdog,
{
unsigned int actual;
- actual = min(new_timeout, wdog->max_hw_heartbeat_ms * 1000);
+ actual = min(new_timeout, IMX2_WDT_MAX_TIME);
__imx2_wdt_set_timeout(wdog, actual);
wdog->timeout = new_timeout;
return 0;
diff --git a/drivers/xen/pci.c b/drivers/xen/pci.c
index 7494dbeb4409..db58aaa4dc59 100644
--- a/drivers/xen/pci.c
+++ b/drivers/xen/pci.c
@@ -29,6 +29,8 @@
#include "../pci/pci.h"
#ifdef CONFIG_PCI_MMCONFIG
#include <asm/pci_x86.h>
+
+static int xen_mcfg_late(void);
#endif
static bool __read_mostly pci_seg_supported = true;
@@ -40,7 +42,18 @@ static int xen_add_device(struct device *dev)
#ifdef CONFIG_PCI_IOV
struct pci_dev *physfn = pci_dev->physfn;
#endif
-
+#ifdef CONFIG_PCI_MMCONFIG
+ static bool pci_mcfg_reserved = false;
+ /*
+ * Reserve MCFG areas in Xen on first invocation due to this being
+ * potentially called from inside of acpi_init immediately after
+ * MCFG table has been finally parsed.
+ */
+ if (!pci_mcfg_reserved) {
+ xen_mcfg_late();
+ pci_mcfg_reserved = true;
+ }
+#endif
if (pci_seg_supported) {
struct {
struct physdev_pci_device_add add;
@@ -213,7 +226,7 @@ static int __init register_xen_pci_notifier(void)
arch_initcall(register_xen_pci_notifier);
#ifdef CONFIG_PCI_MMCONFIG
-static int __init xen_mcfg_late(void)
+static int xen_mcfg_late(void)
{
struct pci_mmcfg_region *cfg;
int rc;
@@ -252,8 +265,4 @@ static int __init xen_mcfg_late(void)
}
return 0;
}
-/*
- * Needs to be done after acpi_init which are subsys_initcall.
- */
-subsys_initcall_sync(xen_mcfg_late);
#endif
diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
index 39c63152a358..454c6826abdb 100644
--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
@@ -55,6 +55,7 @@
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/miscdevice.h>
+#include <linux/workqueue.h>
#include <xen/xenbus.h>
#include <xen/xen.h>
@@ -116,6 +117,8 @@ struct xenbus_file_priv {
wait_queue_head_t read_waitq;
struct kref kref;
+
+ struct work_struct wq;
};
/* Read out any raw xenbus messages queued up. */
@@ -300,14 +303,14 @@ static void watch_fired(struct xenbus_watch *watch,
mutex_unlock(&adap->dev_data->reply_mutex);
}
-static void xenbus_file_free(struct kref *kref)
+static void xenbus_worker(struct work_struct *wq)
{
struct xenbus_file_priv *u;
struct xenbus_transaction_holder *trans, *tmp;
struct watch_adapter *watch, *tmp_watch;
struct read_buffer *rb, *tmp_rb;
- u = container_of(kref, struct xenbus_file_priv, kref);
+ u = container_of(wq, struct xenbus_file_priv, wq);
/*
* No need for locking here because there are no other users,
@@ -333,6 +336,18 @@ static void xenbus_file_free(struct kref *kref)
kfree(u);
}
+static void xenbus_file_free(struct kref *kref)
+{
+ struct xenbus_file_priv *u;
+
+ /*
+ * We might be called in xenbus_thread().
+ * Use workqueue to avoid deadlock.
+ */
+ u = container_of(kref, struct xenbus_file_priv, kref);
+ schedule_work(&u->wq);
+}
+
static struct xenbus_transaction_holder *xenbus_get_transaction(
struct xenbus_file_priv *u, uint32_t tx_id)
{
@@ -652,6 +667,7 @@ static int xenbus_file_open(struct inode *inode, struct file *filp)
INIT_LIST_HEAD(&u->watches);
INIT_LIST_HEAD(&u->read_buffers);
init_waitqueue_head(&u->read_waitq);
+ INIT_WORK(&u->wq, xenbus_worker);
mutex_init(&u->reply_mutex);
mutex_init(&u->msgbuffer_mutex);
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 05454a7e22dc..550d0b169d7c 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -528,6 +528,7 @@ v9fs_mmap_file_mmap(struct file *filp, struct vm_area_struct *vma)
v9inode = V9FS_I(inode);
mutex_lock(&v9inode->v_mutex);
if (!v9inode->writeback_fid &&
+ (vma->vm_flags & VM_SHARED) &&
(vma->vm_flags & VM_WRITE)) {
/*
* clone a fid and add it to writeback_fid
@@ -629,6 +630,8 @@ static void v9fs_mmap_vm_close(struct vm_area_struct *vma)
(vma->vm_end - vma->vm_start - 1),
};
+ if (!(vma->vm_flags & VM_SHARED))
+ return;
p9_debug(P9_DEBUG_VFS, "9p VMA close, %p, flushing", vma);
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index c06845237cba..8196c21d8623 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -807,7 +807,12 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
/* update inode */
inode->i_rdev = le32_to_cpu(info->rdev);
- inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
+ /* directories have fl_stripe_unit set to zero */
+ if (le32_to_cpu(info->layout.fl_stripe_unit))
+ inode->i_blkbits =
+ fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
+ else
+ inode->i_blkbits = CEPH_BLOCK_SHIFT;
__ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files);
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index bfcf11c70bfa..09db6d08614d 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -3640,7 +3640,9 @@ static void delayed_work(struct work_struct *work)
pr_info("mds%d hung\n", s->s_mds);
}
}
- if (s->s_state < CEPH_MDS_SESSION_OPEN) {
+ if (s->s_state == CEPH_MDS_SESSION_NEW ||
+ s->s_state == CEPH_MDS_SESSION_RESTARTING ||
+ s->s_state == CEPH_MDS_SESSION_REJECTED) {
/* this mds is failed or recovering, just wait */
ceph_put_mds_session(s);
continue;
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 8f68181256c0..f057c213c453 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -518,6 +518,7 @@ static int cuse_channel_open(struct inode *inode, struct file *file)
rc = cuse_send_init(cc);
if (rc) {
fuse_dev_free(fud);
+ fuse_conn_put(&cc->fc);
return rc;
}
file->private_data = fud;
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index b7bde12d8cd5..1c0227c78a7b 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1171,7 +1171,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap,
} else
*p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
}
- if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
+ if (label && (bmval[2] & FATTR4_WORD2_SECURITY_LABEL)) {
*p++ = cpu_to_be32(label->lfs);
*p++ = cpu_to_be32(label->pi);
*p++ = cpu_to_be32(label->len);
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 4931c3a75f03..c818f9886f61 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1426,10 +1426,15 @@ void pnfs_roc_release(struct nfs4_layoutreturn_args *args,
const nfs4_stateid *res_stateid = NULL;
struct nfs4_xdr_opaque_data *ld_private = args->ld_private;
- if (ret == 0) {
- arg_stateid = &args->stateid;
+ switch (ret) {
+ case -NFS4ERR_NOMATCHING_LAYOUT:
+ break;
+ case 0:
if (res->lrs_present)
res_stateid = &res->stateid;
+ /* Fallthrough */
+ default:
+ arg_stateid = &args->stateid;
}
pnfs_layoutreturn_free_lsegs(lo, arg_stateid, &args->range,
res_stateid);
diff --git a/fs/statfs.c b/fs/statfs.c
index f0216629621d..56f655f757ff 100644
--- a/fs/statfs.c
+++ b/fs/statfs.c
@@ -304,19 +304,10 @@ COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct compat_statfs __user *,
static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf)
{
struct compat_statfs64 buf;
- if (sizeof(ubuf->f_bsize) == 4) {
- if ((kbuf->f_type | kbuf->f_bsize | kbuf->f_namelen |
- kbuf->f_frsize | kbuf->f_flags) & 0xffffffff00000000ULL)
- return -EOVERFLOW;
- /* f_files and f_ffree may be -1; it's okay
- * to stuff that into 32 bits */
- if (kbuf->f_files != 0xffffffffffffffffULL
- && (kbuf->f_files & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- if (kbuf->f_ffree != 0xffffffffffffffffULL
- && (kbuf->f_ffree & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- }
+
+ if ((kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
+ return -EOVERFLOW;
+
memset(&buf, 0, sizeof(struct compat_statfs64));
buf.f_type = kbuf->f_type;
buf.f_bsize = kbuf->f_bsize;
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 9c03a7d5e400..c83478271c2e 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -3185,4 +3185,57 @@ static inline bool ieee80211_action_contains_tpc(struct sk_buff *skb)
return true;
}
+struct element {
+ u8 id;
+ u8 datalen;
+ u8 data[];
+} __packed;
+
+/* element iteration helpers */
+#define for_each_element(_elem, _data, _datalen) \
+ for (_elem = (const struct element *)(_data); \
+ (const u8 *)(_data) + (_datalen) - (const u8 *)_elem >= \
+ (int)sizeof(*_elem) && \
+ (const u8 *)(_data) + (_datalen) - (const u8 *)_elem >= \
+ (int)sizeof(*_elem) + _elem->datalen; \
+ _elem = (const struct element *)(_elem->data + _elem->datalen))
+
+#define for_each_element_id(element, _id, data, datalen) \
+ for_each_element(element, data, datalen) \
+ if (element->id == (_id))
+
+#define for_each_element_extid(element, extid, data, datalen) \
+ for_each_element(element, data, datalen) \
+ if (element->id == WLAN_EID_EXTENSION && \
+ element->datalen > 0 && \
+ element->data[0] == (extid))
+
+#define for_each_subelement(sub, element) \
+ for_each_element(sub, (element)->data, (element)->datalen)
+
+#define for_each_subelement_id(sub, id, element) \
+ for_each_element_id(sub, id, (element)->data, (element)->datalen)
+
+#define for_each_subelement_extid(sub, extid, element) \
+ for_each_element_extid(sub, extid, (element)->data, (element)->datalen)
+
+/**
+ * for_each_element_completed - determine if element parsing consumed all data
+ * @element: element pointer after for_each_element() or friends
+ * @data: same data pointer as passed to for_each_element() or friends
+ * @datalen: same data length as passed to for_each_element() or friends
+ *
+ * This function returns %true if all the data was parsed or considered
+ * while walking the elements. Only use this if your for_each_element()
+ * loop cannot be broken out of, otherwise it always returns %false.
+ *
+ * If some data was malformed, this returns %false since the last parsed
+ * element will not fill the whole remaining data.
+ */
+static inline bool for_each_element_completed(const struct element *element,
+ const void *data, size_t datalen)
+{
+ return (const u8 *)element == (const u8 *)data + datalen;
+}
+
#endif /* LINUX_IEEE80211_H */
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index 0d10b7ce0da7..e9d4e389aed9 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -330,6 +330,8 @@ enum {
static inline void membarrier_mm_sync_core_before_usermode(struct mm_struct *mm)
{
+ if (current->mm != mm)
+ return;
if (likely(!(atomic_read(&mm->membarrier_state) &
MEMBARRIER_STATE_PRIVATE_EXPEDITED_SYNC_CORE)))
return;
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index fdaaafdc7a00..5165e3b30899 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -353,6 +353,8 @@ struct device;
#define SND_SOC_DAPM_WILL_PMD 0x80 /* called at start of sequence */
#define SND_SOC_DAPM_PRE_POST_PMD \
(SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD)
+#define SND_SOC_DAPM_PRE_POST_PMU \
+ (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU)
/* convenience event type detection */
#define SND_SOC_DAPM_EVENT_ON(e) \
diff --git a/kernel/elfcore.c b/kernel/elfcore.c
index fc482c8e0bd8..57fb4dcff434 100644
--- a/kernel/elfcore.c
+++ b/kernel/elfcore.c
@@ -3,6 +3,7 @@
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/binfmts.h>
+#include <linux/elfcore.h>
Elf_Half __weak elf_core_extra_phdrs(void)
{
diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h
index 5a0cf5f9008c..82104d3dd18e 100644
--- a/kernel/locking/qspinlock_paravirt.h
+++ b/kernel/locking/qspinlock_paravirt.h
@@ -271,7 +271,7 @@ pv_wait_early(struct pv_node *prev, int loop)
if ((loop & PV_PREV_CHECK_MASK) != 0)
return false;
- return READ_ONCE(prev->state) != vcpu_running || vcpu_is_preempted(prev->cpu);
+ return READ_ONCE(prev->state) != vcpu_running;
}
/*
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index f4e050681ba1..78ecdfae25b6 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1077,7 +1077,8 @@ static int __set_cpus_allowed_ptr(struct task_struct *p,
if (cpumask_equal(&p->cpus_allowed, new_mask))
goto out;
- if (!cpumask_intersects(new_mask, cpu_valid_mask)) {
+ dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask);
+ if (dest_cpu >= nr_cpu_ids) {
ret = -EINVAL;
goto out;
}
@@ -1098,7 +1099,6 @@ static int __set_cpus_allowed_ptr(struct task_struct *p,
if (cpumask_test_cpu(task_cpu(p), new_mask))
goto out;
- dest_cpu = cpumask_any_and(cpu_valid_mask, new_mask);
if (task_running(rq, p) || p->state == TASK_WAKING) {
struct migration_arg arg = { p, dest_cpu };
/* Need help from migration thread: drop lock and wait. */
diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c
index 76e0eaf4654e..dd27e632b1ba 100644
--- a/kernel/sched/membarrier.c
+++ b/kernel/sched/membarrier.c
@@ -235,7 +235,7 @@ static int membarrier_register_private_expedited(int flags)
* groups, which use the same mm. (CLONE_VM but not
* CLONE_THREAD).
*/
- if (atomic_read(&mm->membarrier_state) & state)
+ if ((atomic_read(&mm->membarrier_state) & state) == state)
return 0;
atomic_or(MEMBARRIER_STATE_PRIVATE_EXPEDITED, &mm->membarrier_state);
if (flags & MEMBARRIER_FLAG_SYNC_CORE)
diff --git a/kernel/time/tick-broadcast-hrtimer.c b/kernel/time/tick-broadcast-hrtimer.c
index a59641fb88b6..a836efd34589 100644
--- a/kernel/time/tick-broadcast-hrtimer.c
+++ b/kernel/time/tick-broadcast-hrtimer.c
@@ -44,34 +44,39 @@ static int bc_shutdown(struct clock_event_device *evt)
*/
static int bc_set_next(ktime_t expires, struct clock_event_device *bc)
{
- int bc_moved;
/*
- * We try to cancel the timer first. If the callback is on
- * flight on some other cpu then we let it handle it. If we
- * were able to cancel the timer nothing can rearm it as we
- * own broadcast_lock.
+ * This is called either from enter/exit idle code or from the
+ * broadcast handler. In all cases tick_broadcast_lock is held.
*
- * However we can also be called from the event handler of
- * ce_broadcast_hrtimer itself when it expires. We cannot
- * restart the timer because we are in the callback, but we
- * can set the expiry time and let the callback return
- * HRTIMER_RESTART.
+ * hrtimer_cancel() cannot be called here neither from the
+ * broadcast handler nor from the enter/exit idle code. The idle
+ * code can run into the problem described in bc_shutdown() and the
+ * broadcast handler cannot wait for itself to complete for obvious
+ * reasons.
*
- * Since we are in the idle loop at this point and because
- * hrtimer_{start/cancel} functions call into tracing,
- * calls to these functions must be bound within RCU_NONIDLE.
+ * Each caller tries to arm the hrtimer on its own CPU, but if the
+ * hrtimer callbback function is currently running, then
+ * hrtimer_start() cannot move it and the timer stays on the CPU on
+ * which it is assigned at the moment.
+ *
+ * As this can be called from idle code, the hrtimer_start()
+ * invocation has to be wrapped with RCU_NONIDLE() as
+ * hrtimer_start() can call into tracing.
*/
- RCU_NONIDLE({
- bc_moved = hrtimer_try_to_cancel(&bctimer) >= 0;
- if (bc_moved)
- hrtimer_start(&bctimer, expires,
- HRTIMER_MODE_ABS_PINNED);});
- if (bc_moved) {
- /* Bind the "device" to the cpu */
- bc->bound_on = smp_processor_id();
- } else if (bc->bound_on == smp_processor_id()) {
- hrtimer_set_expires(&bctimer, expires);
- }
+ RCU_NONIDLE( {
+ hrtimer_start(&bctimer, expires, HRTIMER_MODE_ABS_PINNED);
+ /*
+ * The core tick broadcast mode expects bc->bound_on to be set
+ * correctly to prevent a CPU which has the broadcast hrtimer
+ * armed from going deep idle.
+ *
+ * As tick_broadcast_lock is held, nothing can change the cpu
+ * base which was just established in hrtimer_start() above. So
+ * the below access is safe even without holding the hrtimer
+ * base lock.
+ */
+ bc->bound_on = bctimer.base->cpu_base->cpu;
+ } );
return 0;
}
@@ -97,10 +102,6 @@ static enum hrtimer_restart bc_handler(struct hrtimer *t)
{
ce_broadcast_hrtimer.event_handler(&ce_broadcast_hrtimer);
- if (clockevent_state_oneshot(&ce_broadcast_hrtimer))
- if (ce_broadcast_hrtimer.next_event != KTIME_MAX)
- return HRTIMER_RESTART;
-
return HRTIMER_NORESTART;
}
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index fa49cd753dea..ae64cb819a9a 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1590,24 +1590,26 @@ void timer_clear_idle(void)
static int collect_expired_timers(struct timer_base *base,
struct hlist_head *heads)
{
+ unsigned long now = READ_ONCE(jiffies);
+
/*
* NOHZ optimization. After a long idle sleep we need to forward the
* base to current jiffies. Avoid a loop by searching the bitfield for
* the next expiring timer.
*/
- if ((long)(jiffies - base->clk) > 2) {
+ if ((long)(now - base->clk) > 2) {
unsigned long next = __next_timer_interrupt(base);
/*
* If the next timer is ahead of time forward to current
* jiffies, otherwise forward to the next expiry time:
*/
- if (time_after(next, jiffies)) {
+ if (time_after(next, now)) {
/*
* The call site will increment base->clk and then
* terminate the expiry loop immediately.
*/
- base->clk = jiffies;
+ base->clk = now;
return 0;
}
base->clk = next;
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 3f34cfb66a85..bdf104596d12 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -2526,6 +2526,8 @@ static struct hist_field *create_alias(struct hist_trigger_data *hist_data,
return NULL;
}
+ alias->var_ref_idx = var_ref->var_ref_idx;
+
return alias;
}
diff --git a/mm/usercopy.c b/mm/usercopy.c
index 51411f9c4068..e81d11715d95 100644
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -15,6 +15,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/mm.h>
+#include <linux/highmem.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/sched/task.h>
@@ -231,7 +232,12 @@ static inline void check_heap_object(const void *ptr, unsigned long n,
if (!virt_addr_valid(ptr))
return;
- page = virt_to_head_page(ptr);
+ /*
+ * When CONFIG_HIGHMEM=y, kmap_to_page() will give either the
+ * highmem page or fallback to virt_to_page(). The following
+ * is effectively a highmem-aware virt_to_head_page().
+ */
+ page = compound_head(kmap_to_page((void *)ptr));
if (PageSlab(page)) {
/* Check slab allocator for flags and size. */
diff --git a/net/9p/client.c b/net/9p/client.c
index b615aae5a0f8..d62f83f93d7b 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -296,6 +296,7 @@ p9_tag_alloc(struct p9_client *c, int8_t type, unsigned int max_size)
p9pdu_reset(&req->tc);
p9pdu_reset(&req->rc);
+ req->t_err = 0;
req->status = REQ_STATUS_ALLOC;
init_waitqueue_head(&req->wq);
INIT_LIST_HEAD(&req->req_list);
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 2145581d7b3d..24fddf032279 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3429,8 +3429,11 @@ static int nf_tables_newset(struct net *net, struct sock *nlsk,
NFT_SET_OBJECT))
return -EINVAL;
/* Only one of these operations is supported */
- if ((flags & (NFT_SET_MAP | NFT_SET_EVAL | NFT_SET_OBJECT)) ==
- (NFT_SET_MAP | NFT_SET_EVAL | NFT_SET_OBJECT))
+ if ((flags & (NFT_SET_MAP | NFT_SET_OBJECT)) ==
+ (NFT_SET_MAP | NFT_SET_OBJECT))
+ return -EOPNOTSUPP;
+ if ((flags & (NFT_SET_EVAL | NFT_SET_OBJECT)) ==
+ (NFT_SET_EVAL | NFT_SET_OBJECT))
return -EOPNOTSUPP;
}
diff --git a/net/netfilter/nft_lookup.c b/net/netfilter/nft_lookup.c
index 161c3451a747..55754d9939b5 100644
--- a/net/netfilter/nft_lookup.c
+++ b/net/netfilter/nft_lookup.c
@@ -76,9 +76,6 @@ static int nft_lookup_init(const struct nft_ctx *ctx,
if (IS_ERR(set))
return PTR_ERR(set);
- if (set->flags & NFT_SET_EVAL)
- return -EOPNOTSUPP;
-
priv->sreg = nft_parse_register(tb[NFTA_LOOKUP_SREG]);
err = nft_validate_register_load(priv->sreg, set->klen);
if (err < 0)
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 6168db3c35e4..334e3181f1c5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -200,6 +200,38 @@ cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
return __cfg80211_rdev_from_attrs(netns, info->attrs);
}
+static int validate_beacon_head(const struct nlattr *attr,
+ struct netlink_ext_ack *extack)
+{
+ const u8 *data = nla_data(attr);
+ unsigned int len = nla_len(attr);
+ const struct element *elem;
+ const struct ieee80211_mgmt *mgmt = (void *)data;
+ unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
+ u.beacon.variable);
+
+ if (len < fixedlen)
+ goto err;
+
+ if (ieee80211_hdrlen(mgmt->frame_control) !=
+ offsetof(struct ieee80211_mgmt, u.beacon))
+ goto err;
+
+ data += fixedlen;
+ len -= fixedlen;
+
+ for_each_element(elem, data, len) {
+ /* nothing */
+ }
+
+ if (for_each_element_completed(elem, data, len))
+ return 0;
+
+err:
+ NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
+ return -EINVAL;
+}
+
/* policy for the attributes */
static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
@@ -2299,6 +2331,8 @@ static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
+ memset(chandef, 0, sizeof(*chandef));
+
chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
chandef->center_freq1 = control_freq;
@@ -2819,7 +2853,7 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flag
if (rdev->ops->get_channel) {
int ret;
- struct cfg80211_chan_def chandef;
+ struct cfg80211_chan_def chandef = {};
ret = rdev_get_channel(rdev, wdev, &chandef);
if (ret == 0) {
@@ -4014,6 +4048,12 @@ static int nl80211_parse_beacon(struct nlattr *attrs[],
memset(bcn, 0, sizeof(*bcn));
if (attrs[NL80211_ATTR_BEACON_HEAD]) {
+ int ret = validate_beacon_head(attrs[NL80211_ATTR_BEACON_HEAD],
+ NULL);
+
+ if (ret)
+ return ret;
+
bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
if (!bcn->head_len)
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index d8ebf4f0ef6e..cccbf845079c 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2095,7 +2095,7 @@ static void reg_call_notifier(struct wiphy *wiphy,
static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev)
{
- struct cfg80211_chan_def chandef;
+ struct cfg80211_chan_def chandef = {};
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
enum nl80211_iftype iftype;
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index d0e7472dd9fd..e5d61ba837ad 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -484,6 +484,8 @@ const u8 *cfg80211_find_ie_match(u8 eid, const u8 *ies, int len,
const u8 *match, int match_len,
int match_offset)
{
+ const struct element *elem;
+
/* match_offset can't be smaller than 2, unless match_len is
* zero, in which case match_offset must be zero as well.
*/
@@ -491,14 +493,10 @@ const u8 *cfg80211_find_ie_match(u8 eid, const u8 *ies, int len,
(!match_len && match_offset)))
return NULL;
- while (len >= 2 && len >= ies[1] + 2) {
- if ((ies[0] == eid) &&
- (ies[1] + 2 >= match_offset + match_len) &&
- !memcmp(ies + match_offset, match, match_len))
- return ies;
-
- len -= ies[1] + 2;
- ies += ies[1] + 2;
+ for_each_element_id(elem, eid, ies, len) {
+ if (elem->datalen >= match_offset - 2 + match_len &&
+ !memcmp(elem->data + match_offset - 2, match, match_len))
+ return (void *)elem;
}
return NULL;
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 06943d9c9835..4f0cfb8cc682 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -800,7 +800,7 @@ static int cfg80211_wext_giwfreq(struct net_device *dev,
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
- struct cfg80211_chan_def chandef;
+ struct cfg80211_chan_def chandef = {};
int ret;
switch (wdev->iftype) {
diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c
index d9e7728027c6..f63b4bd45d60 100644
--- a/security/integrity/ima/ima_crypto.c
+++ b/security/integrity/ima/ima_crypto.c
@@ -271,8 +271,16 @@ static int ima_calc_file_hash_atfm(struct file *file,
rbuf_len = min_t(loff_t, i_size - offset, rbuf_size[active]);
rc = integrity_kernel_read(file, offset, rbuf[active],
rbuf_len);
- if (rc != rbuf_len)
+ if (rc != rbuf_len) {
+ if (rc >= 0)
+ rc = -EINVAL;
+ /*
+ * Forward current rc, do not overwrite with return value
+ * from ahash_wait()
+ */
+ ahash_wait(ahash_rc, &wait);
goto out3;
+ }
if (rbuf[1] && offset) {
/* Using two buffers, and it is not the first
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index 18cddf1729a6..64a52d495b1f 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -31,6 +31,13 @@
#define SGTL5000_DAP_REG_OFFSET 0x0100
#define SGTL5000_MAX_REG_OFFSET 0x013A
+/* Delay for the VAG ramp up */
+#define SGTL5000_VAG_POWERUP_DELAY 500 /* ms */
+/* Delay for the VAG ramp down */
+#define SGTL5000_VAG_POWERDOWN_DELAY 500 /* ms */
+
+#define SGTL5000_OUTPUTS_MUTE (SGTL5000_HP_MUTE | SGTL5000_LINE_OUT_MUTE)
+
/* default value of sgtl5000 registers */
static const struct reg_default sgtl5000_reg_defaults[] = {
{ SGTL5000_CHIP_DIG_POWER, 0x0000 },
@@ -116,6 +123,13 @@ enum {
I2S_LRCLK_STRENGTH_HIGH,
};
+enum {
+ HP_POWER_EVENT,
+ DAC_POWER_EVENT,
+ ADC_POWER_EVENT,
+ LAST_POWER_EVENT = ADC_POWER_EVENT
+};
+
/* sgtl5000 private structure in codec */
struct sgtl5000_priv {
int sysclk; /* sysclk rate */
@@ -129,8 +143,109 @@ struct sgtl5000_priv {
u8 micbias_resistor;
u8 micbias_voltage;
u8 lrclk_strength;
+ u16 mute_state[LAST_POWER_EVENT + 1];
};
+static inline int hp_sel_input(struct snd_soc_component *component)
+{
+ return (snd_soc_component_read32(component, SGTL5000_CHIP_ANA_CTRL) &
+ SGTL5000_HP_SEL_MASK) >> SGTL5000_HP_SEL_SHIFT;
+}
+
+static inline u16 mute_output(struct snd_soc_component *component,
+ u16 mute_mask)
+{
+ u16 mute_reg = snd_soc_component_read32(component,
+ SGTL5000_CHIP_ANA_CTRL);
+
+ snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_CTRL,
+ mute_mask, mute_mask);
+ return mute_reg;
+}
+
+static inline void restore_output(struct snd_soc_component *component,
+ u16 mute_mask, u16 mute_reg)
+{
+ snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_CTRL,
+ mute_mask, mute_reg);
+}
+
+static void vag_power_on(struct snd_soc_component *component, u32 source)
+{
+ if (snd_soc_component_read32(component, SGTL5000_CHIP_ANA_POWER) &
+ SGTL5000_VAG_POWERUP)
+ return;
+
+ snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
+ SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
+
+ /* When VAG powering on to get local loop from Line-In, the sleep
+ * is required to avoid loud pop.
+ */
+ if (hp_sel_input(component) == SGTL5000_HP_SEL_LINE_IN &&
+ source == HP_POWER_EVENT)
+ msleep(SGTL5000_VAG_POWERUP_DELAY);
+}
+
+static int vag_power_consumers(struct snd_soc_component *component,
+ u16 ana_pwr_reg, u32 source)
+{
+ int consumers = 0;
+
+ /* count dac/adc consumers unconditional */
+ if (ana_pwr_reg & SGTL5000_DAC_POWERUP)
+ consumers++;
+ if (ana_pwr_reg & SGTL5000_ADC_POWERUP)
+ consumers++;
+
+ /*
+ * If the event comes from HP and Line-In is selected,
+ * current action is 'DAC to be powered down'.
+ * As HP_POWERUP is not set when HP muxed to line-in,
+ * we need to keep VAG power ON.
+ */
+ if (source == HP_POWER_EVENT) {
+ if (hp_sel_input(component) == SGTL5000_HP_SEL_LINE_IN)
+ consumers++;
+ } else {
+ if (ana_pwr_reg & SGTL5000_HP_POWERUP)
+ consumers++;
+ }
+
+ return consumers;
+}
+
+static void vag_power_off(struct snd_soc_component *component, u32 source)
+{
+ u16 ana_pwr = snd_soc_component_read32(component,
+ SGTL5000_CHIP_ANA_POWER);
+
+ if (!(ana_pwr & SGTL5000_VAG_POWERUP))
+ return;
+
+ /*
+ * This function calls when any of VAG power consumers is disappearing.
+ * Thus, if there is more than one consumer at the moment, as minimum
+ * one consumer will definitely stay after the end of the current
+ * event.
+ * Don't clear VAG_POWERUP if 2 or more consumers of VAG present:
+ * - LINE_IN (for HP events) / HP (for DAC/ADC events)
+ * - DAC
+ * - ADC
+ * (the current consumer is disappearing right now)
+ */
+ if (vag_power_consumers(component, ana_pwr, source) >= 2)
+ return;
+
+ snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
+ SGTL5000_VAG_POWERUP, 0);
+ /* In power down case, we need wait 400-1000 ms
+ * when VAG fully ramped down.
+ * As longer we wait, as smaller pop we've got.
+ */
+ msleep(SGTL5000_VAG_POWERDOWN_DELAY);
+}
+
/*
* mic_bias power on/off share the same register bits with
* output impedance of mic bias, when power on mic bias, we
@@ -162,36 +277,46 @@ static int mic_bias_event(struct snd_soc_dapm_widget *w,
return 0;
}
-/*
- * As manual described, ADC/DAC only works when VAG powerup,
- * So enabled VAG before ADC/DAC up.
- * In power down case, we need wait 400ms when vag fully ramped down.
- */
-static int power_vag_event(struct snd_soc_dapm_widget *w,
- struct snd_kcontrol *kcontrol, int event)
+static int vag_and_mute_control(struct snd_soc_component *component,
+ int event, int event_source)
{
- struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
- const u32 mask = SGTL5000_DAC_POWERUP | SGTL5000_ADC_POWERUP;
+ static const u16 mute_mask[] = {
+ /*
+ * Mask for HP_POWER_EVENT.
+ * Muxing Headphones have to be wrapped with mute/unmute
+ * headphones only.
+ */
+ SGTL5000_HP_MUTE,
+ /*
+ * Masks for DAC_POWER_EVENT/ADC_POWER_EVENT.
+ * Muxing DAC or ADC block have to wrapped with mute/unmute
+ * both headphones and line-out.
+ */
+ SGTL5000_OUTPUTS_MUTE,
+ SGTL5000_OUTPUTS_MUTE
+ };
+
+ struct sgtl5000_priv *sgtl5000 =
+ snd_soc_component_get_drvdata(component);
switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ sgtl5000->mute_state[event_source] =
+ mute_output(component, mute_mask[event_source]);
+ break;
case SND_SOC_DAPM_POST_PMU:
- snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
- SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
- msleep(400);
+ vag_power_on(component, event_source);
+ restore_output(component, mute_mask[event_source],
+ sgtl5000->mute_state[event_source]);
break;
-
case SND_SOC_DAPM_PRE_PMD:
- /*
- * Don't clear VAG_POWERUP, when both DAC and ADC are
- * operational to prevent inadvertently starving the
- * other one of them.
- */
- if ((snd_soc_component_read32(component, SGTL5000_CHIP_ANA_POWER) &
- mask) != mask) {
- snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
- SGTL5000_VAG_POWERUP, 0);
- msleep(400);
- }
+ sgtl5000->mute_state[event_source] =
+ mute_output(component, mute_mask[event_source]);
+ vag_power_off(component, event_source);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ restore_output(component, mute_mask[event_source],
+ sgtl5000->mute_state[event_source]);
break;
default:
break;
@@ -200,6 +325,41 @@ static int power_vag_event(struct snd_soc_dapm_widget *w,
return 0;
}
+/*
+ * Mute Headphone when power it up/down.
+ * Control VAG power on HP power path.
+ */
+static int headphone_pga_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+
+ return vag_and_mute_control(component, event, HP_POWER_EVENT);
+}
+
+/* As manual describes, ADC/DAC powering up/down requires
+ * to mute outputs to avoid pops.
+ * Control VAG power on ADC/DAC power path.
+ */
+static int adc_updown_depop(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+
+ return vag_and_mute_control(component, event, ADC_POWER_EVENT);
+}
+
+static int dac_updown_depop(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+
+ return vag_and_mute_control(component, event, DAC_POWER_EVENT);
+}
+
/* input sources for ADC */
static const char *adc_mux_text[] = {
"MIC_IN", "LINE_IN"
@@ -272,7 +432,10 @@ static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = {
mic_bias_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
- SND_SOC_DAPM_PGA("HP", SGTL5000_CHIP_ANA_POWER, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_E("HP", SGTL5000_CHIP_ANA_POWER, 4, 0, NULL, 0,
+ headphone_pga_event,
+ SND_SOC_DAPM_PRE_POST_PMU |
+ SND_SOC_DAPM_PRE_POST_PMD),
SND_SOC_DAPM_PGA("LO", SGTL5000_CHIP_ANA_POWER, 0, 0, NULL, 0),
SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0, &adc_mux),
@@ -293,11 +456,12 @@ static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = {
0, SGTL5000_CHIP_DIG_POWER,
1, 0),
- SND_SOC_DAPM_ADC("ADC", "Capture", SGTL5000_CHIP_ANA_POWER, 1, 0),
- SND_SOC_DAPM_DAC("DAC", "Playback", SGTL5000_CHIP_ANA_POWER, 3, 0),
-
- SND_SOC_DAPM_PRE("VAG_POWER_PRE", power_vag_event),
- SND_SOC_DAPM_POST("VAG_POWER_POST", power_vag_event),
+ SND_SOC_DAPM_ADC_E("ADC", "Capture", SGTL5000_CHIP_ANA_POWER, 1, 0,
+ adc_updown_depop, SND_SOC_DAPM_PRE_POST_PMU |
+ SND_SOC_DAPM_PRE_POST_PMD),
+ SND_SOC_DAPM_DAC_E("DAC", "Playback", SGTL5000_CHIP_ANA_POWER, 3, 0,
+ dac_updown_depop, SND_SOC_DAPM_PRE_POST_PMU |
+ SND_SOC_DAPM_PRE_POST_PMD),
};
/* routes for sgtl5000 */
diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index 95a43ccb6dd0..bca0c9e5452c 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -259,8 +259,8 @@ endef
define do_generate_dynamic_list_file
symbol_type=`$(NM) -u -D $1 | awk 'NF>1 {print $$1}' | \
- xargs echo "U W w" | tr ' ' '\n' | sort -u | xargs echo`;\
- if [ "$$symbol_type" = "U W w" ];then \
+ xargs echo "U w W" | tr 'w ' 'W\n' | sort -u | xargs echo`;\
+ if [ "$$symbol_type" = "U W" ];then \
(echo '{'; \
$(NM) -u -D $1 | awk 'NF>1 {print "\t"$$2";"}' | sort -u;\
echo '};'; \
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 6ccfd13d5cf9..382e476629fb 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -254,10 +254,10 @@ static int add_new_comm(struct tep_handle *pevent, const char *comm, int pid)
errno = ENOMEM;
return -1;
}
+ pevent->cmdlines = cmdlines;
cmdlines[pevent->cmdline_count].comm = strdup(comm);
if (!cmdlines[pevent->cmdline_count].comm) {
- free(cmdlines);
errno = ENOMEM;
return -1;
}
@@ -268,7 +268,6 @@ static int add_new_comm(struct tep_handle *pevent, const char *comm, int pid)
pevent->cmdline_count++;
qsort(cmdlines, pevent->cmdline_count, sizeof(*cmdlines), cmdline_cmp);
- pevent->cmdlines = cmdlines;
return 0;
}
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 849b3be15bd8..510caedd7319 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -837,7 +837,7 @@ ifndef NO_JVMTI
JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
else
ifneq (,$(wildcard /usr/sbin/alternatives))
- JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed 's%/jre/bin/java.%%g')
+ JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
endif
endif
ifndef JDIR
diff --git a/tools/perf/arch/x86/util/unwind-libunwind.c b/tools/perf/arch/x86/util/unwind-libunwind.c
index 05920e3edf7a..47357973b55b 100644
--- a/tools/perf/arch/x86/util/unwind-libunwind.c
+++ b/tools/perf/arch/x86/util/unwind-libunwind.c
@@ -1,11 +1,11 @@
// SPDX-License-Identifier: GPL-2.0
#include <errno.h>
+#include "../../util/debug.h"
#ifndef REMOTE_UNWIND_LIBUNWIND
#include <libunwind.h>
#include "perf_regs.h"
#include "../../util/unwind.h"
-#include "../../util/debug.h"
#endif
#ifdef HAVE_ARCH_X86_64_SUPPORT
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 789962565c9c..6aae10ff954c 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -3090,8 +3090,11 @@ int cmd_stat(int argc, const char **argv)
fprintf(output, "[ perf stat: executing run #%d ... ]\n",
run_idx + 1);
+ if (run_idx != 0)
+ perf_evlist__reset_prev_raw_counts(evsel_list);
+
status = run_perf_stat(argc, argv, run_idx);
- if (forever && status != -1) {
+ if (forever && status != -1 && !interval) {
print_counters(NULL, argc, argv);
perf_stat__reset_stats();
}
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 0c70788593c8..3c0d74fc1ff2 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1114,7 +1114,7 @@ static int cpu_cache_level__read(struct cpu_cache_level *cache, u32 cpu, u16 lev
scnprintf(file, PATH_MAX, "%s/shared_cpu_list", path);
if (sysfs__read_str(file, &cache->map, &len)) {
- free(cache->map);
+ free(cache->size);
free(cache->type);
return -1;
}
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index a0061e0b0fad..6917ba8a0024 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -154,6 +154,15 @@ static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
evsel->prev_raw_counts = NULL;
}
+static void perf_evsel__reset_prev_raw_counts(struct perf_evsel *evsel)
+{
+ if (evsel->prev_raw_counts) {
+ evsel->prev_raw_counts->aggr.val = 0;
+ evsel->prev_raw_counts->aggr.ena = 0;
+ evsel->prev_raw_counts->aggr.run = 0;
+ }
+}
+
static int perf_evsel__alloc_stats(struct perf_evsel *evsel, bool alloc_raw)
{
int ncpus = perf_evsel__nr_cpus(evsel);
@@ -204,6 +213,14 @@ void perf_evlist__reset_stats(struct perf_evlist *evlist)
}
}
+void perf_evlist__reset_prev_raw_counts(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel;
+
+ evlist__for_each_entry(evlist, evsel)
+ perf_evsel__reset_prev_raw_counts(evsel);
+}
+
static void zero_per_pkg(struct perf_evsel *counter)
{
if (counter->per_pkg_mask)
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index 36efb986f7fc..e19abb1635c4 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -158,6 +158,7 @@ void perf_stat__collect_metric_expr(struct perf_evlist *);
int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw);
void perf_evlist__free_stats(struct perf_evlist *evlist);
void perf_evlist__reset_stats(struct perf_evlist *evlist);
+void perf_evlist__reset_prev_raw_counts(struct perf_evlist *evlist);
int perf_stat_process_counter(struct perf_stat_config *config,
struct perf_evsel *counter);
diff --git a/tools/testing/nvdimm/test/nfit_test.h b/tools/testing/nvdimm/test/nfit_test.h
index 33752e06ff8d..3de57cc8716b 100644
--- a/tools/testing/nvdimm/test/nfit_test.h
+++ b/tools/testing/nvdimm/test/nfit_test.h
@@ -12,6 +12,7 @@
*/
#ifndef __NFIT_TEST_H__
#define __NFIT_TEST_H__
+#include <linux/acpi.h>
#include <linux/list.h>
#include <linux/uuid.h>
#include <linux/ioport.h>
@@ -234,9 +235,6 @@ struct nd_intel_lss {
__u32 status;
} __packed;
-union acpi_object;
-typedef void *acpi_handle;
-
typedef struct nfit_test_resource *(*nfit_test_lookup_fn)(resource_size_t);
typedef union acpi_object *(*nfit_test_evaluate_dsm_fn)(acpi_handle handle,
const guid_t *guid, u64 rev, u64 func,
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