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Date: Tue, 24 Apr 2018 11:18:47 +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 4.4.129
diff --git a/Makefile b/Makefile
index 575459bb47eb..096d7e867b6c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 4
-SUBLEVEL = 128
+SUBLEVEL = 129
EXTRAVERSION =
NAME = Blurry Fish Butt
diff --git a/arch/arm/boot/dts/at91sam9g25.dtsi b/arch/arm/boot/dts/at91sam9g25.dtsi
index a7da0dd0c98f..0898213f3bb2 100644
--- a/arch/arm/boot/dts/at91sam9g25.dtsi
+++ b/arch/arm/boot/dts/at91sam9g25.dtsi
@@ -21,7 +21,7 @@
atmel,mux-mask = <
/* A B C */
0xffffffff 0xffe0399f 0xc000001c /* pioA */
- 0x0007ffff 0x8000fe3f 0x00000000 /* pioB */
+ 0x0007ffff 0x00047e3f 0x00000000 /* pioB */
0x80000000 0x07c0ffff 0xb83fffff /* pioC */
0x003fffff 0x003f8000 0x00000000 /* pioD */
>;
diff --git a/arch/arm/boot/dts/sama5d4.dtsi b/arch/arm/boot/dts/sama5d4.dtsi
index 3daf8d5d7878..fb0d1b252dc8 100644
--- a/arch/arm/boot/dts/sama5d4.dtsi
+++ b/arch/arm/boot/dts/sama5d4.dtsi
@@ -1354,7 +1354,7 @@
pinctrl@...6a000 {
#address-cells = <1>;
#size-cells = <1>;
- compatible = "atmel,at91sam9x5-pinctrl", "atmel,at91rm9200-pinctrl", "simple-bus";
+ compatible = "atmel,sama5d3-pinctrl", "atmel,at91sam9x5-pinctrl", "simple-bus";
ranges = <0xfc068000 0xfc068000 0x100
0xfc06a000 0xfc06a000 0x4000>;
/* WARNING: revisit as pin spec has changed */
diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
index c74c32ccc647..4f281768937f 100644
--- a/arch/mips/include/asm/uaccess.h
+++ b/arch/mips/include/asm/uaccess.h
@@ -1238,6 +1238,13 @@ __clear_user(void __user *addr, __kernel_size_t size)
{
__kernel_size_t res;
+#ifdef CONFIG_CPU_MICROMIPS
+/* micromips memset / bzero also clobbers t7 & t8 */
+#define bzero_clobbers "$4", "$5", "$6", __UA_t0, __UA_t1, "$15", "$24", "$31"
+#else
+#define bzero_clobbers "$4", "$5", "$6", __UA_t0, __UA_t1, "$31"
+#endif /* CONFIG_CPU_MICROMIPS */
+
if (eva_kernel_access()) {
__asm__ __volatile__(
"move\t$4, %1\n\t"
@@ -1247,7 +1254,7 @@ __clear_user(void __user *addr, __kernel_size_t size)
"move\t%0, $6"
: "=r" (res)
: "r" (addr), "r" (size)
- : "$4", "$5", "$6", __UA_t0, __UA_t1, "$31");
+ : bzero_clobbers);
} else {
might_fault();
__asm__ __volatile__(
@@ -1258,7 +1265,7 @@ __clear_user(void __user *addr, __kernel_size_t size)
"move\t%0, $6"
: "=r" (res)
: "r" (addr), "r" (size)
- : "$4", "$5", "$6", __UA_t0, __UA_t1, "$31");
+ : bzero_clobbers);
}
return res;
diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S
index 8f0019a2e5c8..2d33cf2185d9 100644
--- a/arch/mips/lib/memset.S
+++ b/arch/mips/lib/memset.S
@@ -218,7 +218,7 @@
1: PTR_ADDIU a0, 1 /* fill bytewise */
R10KCBARRIER(0(ra))
bne t1, a0, 1b
- sb a1, -1(a0)
+ EX(sb, a1, -1(a0), .Lsmall_fixup\@)
2: jr ra /* done */
move a2, zero
@@ -249,13 +249,18 @@
PTR_L t0, TI_TASK($28)
andi a2, STORMASK
LONG_L t0, THREAD_BUADDR(t0)
- LONG_ADDU a2, t1
+ LONG_ADDU a2, a0
jr ra
LONG_SUBU a2, t0
.Llast_fixup\@:
jr ra
- andi v1, a2, STORMASK
+ nop
+
+.Lsmall_fixup\@:
+ PTR_SUBU a2, t1, a0
+ jr ra
+ PTR_ADDIU a2, 1
.endm
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index dba508fe1683..4f7060ec6875 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -648,6 +648,10 @@ static int match_pci_device(struct device *dev, int index,
(modpath->mod == PCI_FUNC(devfn)));
}
+ /* index might be out of bounds for bc[] */
+ if (index >= 6)
+ return 0;
+
id = PCI_SLOT(pdev->devfn) | (PCI_FUNC(pdev->devfn) << 5);
return (modpath->bc[index] == id);
}
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index 0eca6efc0631..b9e16855a037 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -36,7 +36,8 @@
#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); mb(); } while (0)
-#ifdef __SUBARCH_HAS_LWSYNC
+/* The sub-arch has lwsync */
+#if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC)
# define SMPWMB LWSYNC
#else
# define SMPWMB eieio
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 07a99e638449..bab3461115bb 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -21,6 +21,9 @@
/* We calculate number of sg entries based on PAGE_SIZE */
#define SG_ENTRIES_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct opal_sg_entry))
+/* Default time to sleep or delay between OPAL_BUSY/OPAL_BUSY_EVENT loops */
+#define OPAL_BUSY_DELAY_MS 10
+
/* /sys/firmware/opal */
extern struct kobject *opal_kobj;
diff --git a/arch/powerpc/include/asm/synch.h b/arch/powerpc/include/asm/synch.h
index c50868681f9e..e8d6a842f4bb 100644
--- a/arch/powerpc/include/asm/synch.h
+++ b/arch/powerpc/include/asm/synch.h
@@ -5,10 +5,6 @@
#include <linux/stringify.h>
#include <asm/feature-fixups.h>
-#if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC)
-#define __SUBARCH_HAS_LWSYNC
-#endif
-
#ifndef __ASSEMBLY__
extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index 98f81800e00c..304f07cfa262 100644
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -788,7 +788,8 @@ static void eeh_restore_bridge_bars(struct eeh_dev *edev)
eeh_ops->write_config(pdn, 15*4, 4, edev->config_space[15]);
/* PCI Command: 0x4 */
- eeh_ops->write_config(pdn, PCI_COMMAND, 4, edev->config_space[1]);
+ eeh_ops->write_config(pdn, PCI_COMMAND, 4, edev->config_space[1] |
+ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
/* Check the PCIe link is ready */
eeh_bridge_check_link(edev);
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c
index a18d648d31a6..3af014684872 100644
--- a/arch/powerpc/lib/feature-fixups.c
+++ b/arch/powerpc/lib/feature-fixups.c
@@ -53,7 +53,7 @@ static int patch_alt_instruction(unsigned int *src, unsigned int *dest,
unsigned int *target = (unsigned int *)branch_target(src);
/* Branch within the section doesn't need translating */
- if (target < alt_start || target >= alt_end) {
+ if (target < alt_start || target > alt_end) {
instr = translate_branch(dest, src);
if (!instr)
return 1;
diff --git a/arch/powerpc/platforms/powernv/opal-nvram.c b/arch/powerpc/platforms/powernv/opal-nvram.c
index 9db4398ded5d..1bceb95f422d 100644
--- a/arch/powerpc/platforms/powernv/opal-nvram.c
+++ b/arch/powerpc/platforms/powernv/opal-nvram.c
@@ -11,6 +11,7 @@
#define DEBUG
+#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/of.h>
@@ -56,9 +57,17 @@ static ssize_t opal_nvram_write(char *buf, size_t count, loff_t *index)
while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
rc = opal_write_nvram(__pa(buf), count, off);
- if (rc == OPAL_BUSY_EVENT)
+ if (rc == OPAL_BUSY_EVENT) {
+ msleep(OPAL_BUSY_DELAY_MS);
opal_poll_events(NULL);
+ } else if (rc == OPAL_BUSY) {
+ msleep(OPAL_BUSY_DELAY_MS);
+ }
}
+
+ if (rc)
+ return -EIO;
+
*index += count;
return count;
}
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index b2e5902bd8f4..c670279b33f0 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -318,7 +318,7 @@ static void hypfs_kill_super(struct super_block *sb)
if (sb->s_root)
hypfs_delete_tree(sb->s_root);
- if (sb_info->update_file)
+ if (sb_info && sb_info->update_file)
hypfs_remove(sb_info->update_file);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 42570d8fb265..e73979236659 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -798,6 +798,7 @@ static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
/* copy and convert to ebcdic */
memcpy(ipb->hdr.loadparm, buf, lp_len);
ASCEBC(ipb->hdr.loadparm, LOADPARM_LEN);
+ ipb->hdr.flags |= DIAG308_FLAGS_LP_VALID;
return len;
}
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index c211153ca69a..56648f4f8b41 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -140,7 +140,7 @@ static void (*handlers[_NSIG])(int sig, struct siginfo *si, mcontext_t *mc) = {
static void hard_handler(int sig, siginfo_t *si, void *p)
{
- struct ucontext *uc = p;
+ ucontext_t *uc = p;
mcontext_t *mc = &uc->uc_mcontext;
unsigned long pending = 1UL << sig;
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index bb6aab2fa7f5..eab1ef25eecd 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -280,11 +280,6 @@ config X86_32_LAZY_GS
def_bool y
depends on X86_32 && !CC_STACKPROTECTOR
-config ARCH_HWEIGHT_CFLAGS
- string
- default "-fcall-saved-ecx -fcall-saved-edx" if X86_32
- default "-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" if X86_64
-
config ARCH_SUPPORTS_UPROBES
def_bool y
diff --git a/arch/x86/include/asm/arch_hweight.h b/arch/x86/include/asm/arch_hweight.h
index 259a7c1ef709..44f825c80ed5 100644
--- a/arch/x86/include/asm/arch_hweight.h
+++ b/arch/x86/include/asm/arch_hweight.h
@@ -2,8 +2,8 @@
#define _ASM_X86_HWEIGHT_H
#ifdef CONFIG_64BIT
-/* popcnt %edi, %eax -- redundant REX prefix for alignment */
-#define POPCNT32 ".byte 0xf3,0x40,0x0f,0xb8,0xc7"
+/* popcnt %edi, %eax */
+#define POPCNT32 ".byte 0xf3,0x0f,0xb8,0xc7"
/* popcnt %rdi, %rax */
#define POPCNT64 ".byte 0xf3,0x48,0x0f,0xb8,0xc7"
#define REG_IN "D"
@@ -15,19 +15,15 @@
#define REG_OUT "a"
#endif
-/*
- * __sw_hweightXX are called from within the alternatives below
- * and callee-clobbered registers need to be taken care of. See
- * ARCH_HWEIGHT_CFLAGS in <arch/x86/Kconfig> for the respective
- * compiler switches.
- */
+#define __HAVE_ARCH_SW_HWEIGHT
+
static __always_inline unsigned int __arch_hweight32(unsigned int w)
{
- unsigned int res = 0;
+ unsigned int res;
asm (ALTERNATIVE("call __sw_hweight32", POPCNT32, X86_FEATURE_POPCNT)
- : "="REG_OUT (res)
- : REG_IN (w));
+ : "="REG_OUT (res)
+ : REG_IN (w));
return res;
}
@@ -51,11 +47,11 @@ static inline unsigned long __arch_hweight64(__u64 w)
#else
static __always_inline unsigned long __arch_hweight64(__u64 w)
{
- unsigned long res = 0;
+ unsigned long res;
asm (ALTERNATIVE("call __sw_hweight64", POPCNT64, X86_FEATURE_POPCNT)
- : "="REG_OUT (res)
- : REG_IN (w));
+ : "="REG_OUT (res)
+ : REG_IN (w));
return res;
}
diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c
index 64341aa485ae..d40ee8a38fed 100644
--- a/arch/x86/kernel/i386_ksyms_32.c
+++ b/arch/x86/kernel/i386_ksyms_32.c
@@ -42,3 +42,5 @@ EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(___preempt_schedule);
EXPORT_SYMBOL(___preempt_schedule_notrace);
#endif
+
+EXPORT_SYMBOL(__sw_hweight32);
diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c
index a0695be19864..c7efd394c42b 100644
--- a/arch/x86/kernel/x8664_ksyms_64.c
+++ b/arch/x86/kernel/x8664_ksyms_64.c
@@ -42,6 +42,9 @@ EXPORT_SYMBOL(clear_page);
EXPORT_SYMBOL(csum_partial);
+EXPORT_SYMBOL(__sw_hweight32);
+EXPORT_SYMBOL(__sw_hweight64);
+
/*
* Export string functions. We normally rely on gcc builtin for most of these,
* but gcc sometimes decides not to inline them.
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 12a34d15b648..c0c8b0a49bb8 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -23,7 +23,7 @@ lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
lib-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o
lib-$(CONFIG_RETPOLINE) += retpoline.o
-obj-y += msr.o msr-reg.o msr-reg-export.o
+obj-y += msr.o msr-reg.o msr-reg-export.o hweight.o
ifeq ($(CONFIG_X86_32),y)
obj-y += atomic64_32.o
diff --git a/arch/x86/lib/hweight.S b/arch/x86/lib/hweight.S
new file mode 100644
index 000000000000..8a602a1e404a
--- /dev/null
+++ b/arch/x86/lib/hweight.S
@@ -0,0 +1,79 @@
+#include <linux/linkage.h>
+
+#include <asm/asm.h>
+
+/*
+ * unsigned int __sw_hweight32(unsigned int w)
+ * %rdi: w
+ */
+ENTRY(__sw_hweight32)
+
+#ifdef CONFIG_X86_64
+ movl %edi, %eax # w
+#endif
+ __ASM_SIZE(push,) %__ASM_REG(dx)
+ movl %eax, %edx # w -> t
+ shrl %edx # t >>= 1
+ andl $0x55555555, %edx # t &= 0x55555555
+ subl %edx, %eax # w -= t
+
+ movl %eax, %edx # w -> t
+ shrl $2, %eax # w_tmp >>= 2
+ andl $0x33333333, %edx # t &= 0x33333333
+ andl $0x33333333, %eax # w_tmp &= 0x33333333
+ addl %edx, %eax # w = w_tmp + t
+
+ movl %eax, %edx # w -> t
+ shrl $4, %edx # t >>= 4
+ addl %edx, %eax # w_tmp += t
+ andl $0x0f0f0f0f, %eax # w_tmp &= 0x0f0f0f0f
+ imull $0x01010101, %eax, %eax # w_tmp *= 0x01010101
+ shrl $24, %eax # w = w_tmp >> 24
+ __ASM_SIZE(pop,) %__ASM_REG(dx)
+ ret
+ENDPROC(__sw_hweight32)
+
+ENTRY(__sw_hweight64)
+#ifdef CONFIG_X86_64
+ pushq %rdi
+ pushq %rdx
+
+ movq %rdi, %rdx # w -> t
+ movabsq $0x5555555555555555, %rax
+ shrq %rdx # t >>= 1
+ andq %rdx, %rax # t &= 0x5555555555555555
+ movabsq $0x3333333333333333, %rdx
+ subq %rax, %rdi # w -= t
+
+ movq %rdi, %rax # w -> t
+ shrq $2, %rdi # w_tmp >>= 2
+ andq %rdx, %rax # t &= 0x3333333333333333
+ andq %rdi, %rdx # w_tmp &= 0x3333333333333333
+ addq %rdx, %rax # w = w_tmp + t
+
+ movq %rax, %rdx # w -> t
+ shrq $4, %rdx # t >>= 4
+ addq %rdx, %rax # w_tmp += t
+ movabsq $0x0f0f0f0f0f0f0f0f, %rdx
+ andq %rdx, %rax # w_tmp &= 0x0f0f0f0f0f0f0f0f
+ movabsq $0x0101010101010101, %rdx
+ imulq %rdx, %rax # w_tmp *= 0x0101010101010101
+ shrq $56, %rax # w = w_tmp >> 56
+
+ popq %rdx
+ popq %rdi
+ ret
+#else /* CONFIG_X86_32 */
+ /* We're getting an u64 arg in (%eax,%edx): unsigned long hweight64(__u64 w) */
+ pushl %ecx
+
+ call __sw_hweight32
+ movl %eax, %ecx # stash away result
+ movl %edx, %eax # second part of input
+ call __sw_hweight32
+ addl %ecx, %eax # result
+
+ popl %ecx
+ ret
+#endif
+ENDPROC(__sw_hweight64)
diff --git a/arch/x86/um/stub_segv.c b/arch/x86/um/stub_segv.c
index 1518d2805ae8..fd6825537b97 100644
--- a/arch/x86/um/stub_segv.c
+++ b/arch/x86/um/stub_segv.c
@@ -10,7 +10,7 @@
void __attribute__ ((__section__ (".__syscall_stub")))
stub_segv_handler(int sig, siginfo_t *info, void *p)
{
- struct ucontext *uc = p;
+ ucontext_t *uc = p;
GET_FAULTINFO_FROM_MC(*((struct faultinfo *) STUB_DATA),
&uc->uc_mcontext);
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index b48ecbfc4498..8c5503c0bad7 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -205,6 +205,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
"3570R/370R/470R/450R/510R/4450RV"),
},
},
+ {
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1557060 */
+ .callback = video_detect_force_video,
+ .ident = "SAMSUNG 670Z5E",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "670Z5E"),
+ },
+ },
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
.callback = video_detect_force_video,
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 4ac63c0e50c7..fd377b956199 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1582,7 +1582,7 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
return -EINVAL;
if (val_len % map->format.val_bytes)
return -EINVAL;
- if (map->max_raw_write && map->max_raw_write > val_len)
+ if (map->max_raw_write && map->max_raw_write < val_len)
return -E2BIG;
map->lock(map->lock_arg);
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 1dd16f26e77d..e8165ec55e6f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1121,11 +1121,15 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
if (info->lo_encrypt_type) {
unsigned int type = info->lo_encrypt_type;
- if (type >= MAX_LO_CRYPT)
- return -EINVAL;
+ if (type >= MAX_LO_CRYPT) {
+ err = -EINVAL;
+ goto exit;
+ }
xfer = xfer_funcs[type];
- if (xfer == NULL)
- return -EINVAL;
+ if (xfer == NULL) {
+ err = -EINVAL;
+ goto exit;
+ }
} else
xfer = NULL;
diff --git a/drivers/char/random.c b/drivers/char/random.c
index bd9fc2baa6aa..dffd06a3bb76 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -724,7 +724,7 @@ retry:
static int credit_entropy_bits_safe(struct entropy_store *r, int nbits)
{
- const int nbits_max = (int)(~0U >> (ENTROPY_SHIFT + 1));
+ const int nbits_max = r->poolinfo->poolwords * 32;
if (nbits < 0)
return -EINVAL;
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index 7c4b1ffe874f..d56ba46e6b78 100644
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -891,9 +891,7 @@ static void bcm2835_pll_off(struct clk_hw *hw)
const struct bcm2835_pll_data *data = pll->data;
spin_lock(&cprman->regs_lock);
- cprman_write(cprman, data->cm_ctrl_reg,
- cprman_read(cprman, data->cm_ctrl_reg) |
- CM_PLL_ANARST);
+ cprman_write(cprman, data->cm_ctrl_reg, CM_PLL_ANARST);
cprman_write(cprman, data->a2w_ctrl_reg,
cprman_read(cprman, data->a2w_ctrl_reg) |
A2W_PLL_CTRL_PWRDN);
@@ -929,6 +927,10 @@ static int bcm2835_pll_on(struct clk_hw *hw)
cpu_relax();
}
+ cprman_write(cprman, data->a2w_ctrl_reg,
+ cprman_read(cprman, data->a2w_ctrl_reg) |
+ A2W_PLL_CTRL_PRST_DISABLE);
+
return 0;
}
diff --git a/drivers/clk/mvebu/armada-38x.c b/drivers/clk/mvebu/armada-38x.c
index 8bccf4ecdab6..9ff4ea63932d 100644
--- a/drivers/clk/mvebu/armada-38x.c
+++ b/drivers/clk/mvebu/armada-38x.c
@@ -46,10 +46,11 @@ static u32 __init armada_38x_get_tclk_freq(void __iomem *sar)
}
static const u32 armada_38x_cpu_frequencies[] __initconst = {
- 0, 0, 0, 0,
- 1066 * 1000 * 1000, 0, 0, 0,
+ 666 * 1000 * 1000, 0, 800 * 1000 * 1000, 0,
+ 1066 * 1000 * 1000, 0, 1200 * 1000 * 1000, 0,
1332 * 1000 * 1000, 0, 0, 0,
- 1600 * 1000 * 1000,
+ 1600 * 1000 * 1000, 0, 0, 0,
+ 1866 * 1000 * 1000, 0, 0, 2000 * 1000 * 1000,
};
static u32 __init armada_38x_get_cpu_freq(void __iomem *sar)
@@ -75,11 +76,11 @@ static const struct coreclk_ratio armada_38x_coreclk_ratios[] __initconst = {
};
static const int armada_38x_cpu_l2_ratios[32][2] __initconst = {
- {0, 1}, {0, 1}, {0, 1}, {0, 1},
- {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {1, 2}, {0, 1},
+ {1, 2}, {0, 1}, {1, 2}, {0, 1},
{1, 2}, {0, 1}, {0, 1}, {0, 1},
{1, 2}, {0, 1}, {0, 1}, {0, 1},
- {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {1, 2},
{0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1},
@@ -90,7 +91,7 @@ static const int armada_38x_cpu_ddr_ratios[32][2] __initconst = {
{1, 2}, {0, 1}, {0, 1}, {0, 1},
{1, 2}, {0, 1}, {0, 1}, {0, 1},
{1, 2}, {0, 1}, {0, 1}, {0, 1},
- {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {7, 15},
{0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1},
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index 66c073fc8afc..82a7c89caae2 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -1473,10 +1473,10 @@ at_xdmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
for (retry = 0; retry < AT_XDMAC_RESIDUE_MAX_RETRIES; retry++) {
check_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
rmb();
- initd = !!(at_xdmac_chan_read(atchan, AT_XDMAC_CC) & AT_XDMAC_CC_INITD);
- rmb();
cur_ubc = at_xdmac_chan_read(atchan, AT_XDMAC_CUBC);
rmb();
+ initd = !!(at_xdmac_chan_read(atchan, AT_XDMAC_CC) & AT_XDMAC_CC_INITD);
+ rmb();
cur_nda = at_xdmac_chan_read(atchan, AT_XDMAC_CNDA) & 0xfffffffc;
rmb();
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index fb6ad143873f..83aee9e814ba 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -238,9 +238,10 @@ int radeon_bo_create(struct radeon_device *rdev,
* may be slow
* See https://bugs.freedesktop.org/show_bug.cgi?id=88758
*/
-
+#ifndef CONFIG_COMPILE_TEST
#warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
thanks to write-combining
+#endif
if (bo->flags & RADEON_GEM_GTT_WC)
DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index d9007cc37be1..892d0a71d766 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -5964,9 +5964,9 @@ static void si_set_pcie_lane_width_in_smc(struct radeon_device *rdev,
{
u32 lane_width;
u32 new_lane_width =
- (radeon_new_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT;
+ ((radeon_new_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT) + 1;
u32 current_lane_width =
- (radeon_current_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT;
+ ((radeon_current_state->caps & ATOM_PPLIB_PCIE_LINK_WIDTH_MASK) >> ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT) + 1;
if (new_lane_width != current_lane_width) {
radeon_set_pcie_lanes(rdev, new_lane_width);
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index d07fb967f92b..e4541c6bf3d3 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1331,7 +1331,7 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
* of implement() working on 8 byte chunks
*/
- int len = hid_report_len(report) + 7;
+ u32 len = hid_report_len(report) + 7;
return kmalloc(len, flags);
}
@@ -1396,7 +1396,7 @@ void __hid_request(struct hid_device *hid, struct hid_report *report,
{
char *buf;
int ret;
- int len;
+ u32 len;
buf = hid_alloc_report_buf(report, GFP_KERNEL);
if (!buf)
@@ -1422,14 +1422,14 @@ out:
}
EXPORT_SYMBOL_GPL(__hid_request);
-int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
+int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
int interrupt)
{
struct hid_report_enum *report_enum = hid->report_enum + type;
struct hid_report *report;
struct hid_driver *hdrv;
unsigned int a;
- int rsize, csize = size;
+ u32 rsize, csize = size;
u8 *cdata = data;
int ret = 0;
@@ -1487,7 +1487,7 @@ EXPORT_SYMBOL_GPL(hid_report_raw_event);
*
* This is data entry for lower layers.
*/
-int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
+int hid_input_report(struct hid_device *hid, int type, u8 *data, u32 size, int interrupt)
{
struct hid_report_enum *report_enum;
struct hid_driver *hdrv;
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 53e54855c366..8d74e691ac90 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1258,7 +1258,8 @@ static void hidinput_led_worker(struct work_struct *work)
led_work);
struct hid_field *field;
struct hid_report *report;
- int len, ret;
+ int ret;
+ u32 len;
__u8 *buf;
field = hidinput_get_led_field(hid);
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index f62a9d6601cc..9de379c1b3fd 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -314,7 +314,8 @@ static struct attribute_group mt_attribute_group = {
static void mt_get_feature(struct hid_device *hdev, struct hid_report *report)
{
struct mt_device *td = hid_get_drvdata(hdev);
- int ret, size = hid_report_len(report);
+ int ret;
+ u32 size = hid_report_len(report);
u8 *buf;
/*
@@ -919,7 +920,7 @@ static void mt_set_input_mode(struct hid_device *hdev)
struct hid_report_enum *re;
struct mt_class *cls = &td->mtclass;
char *buf;
- int report_len;
+ u32 report_len;
if (td->inputmode < 0)
return;
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 67cd059a8f46..41a4a2af9db1 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -110,8 +110,8 @@ struct rmi_data {
u8 *writeReport;
u8 *readReport;
- int input_report_size;
- int output_report_size;
+ u32 input_report_size;
+ u32 output_report_size;
unsigned long flags;
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 9c2d7c23f296..c0c4df198725 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -197,6 +197,11 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t
int ret = 0, len;
unsigned char report_number;
+ if (!hidraw_table[minor] || !hidraw_table[minor]->exist) {
+ ret = -ENODEV;
+ goto out;
+ }
+
dev = hidraw_table[minor]->hid;
if (!dev->ll_driver->raw_request) {
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index 312aa1e33fb2..4c3ed078c6b9 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -137,10 +137,10 @@ struct i2c_hid {
* register of the HID
* descriptor. */
unsigned int bufsize; /* i2c buffer size */
- char *inbuf; /* Input buffer */
- char *rawbuf; /* Raw Input buffer */
- char *cmdbuf; /* Command buffer */
- char *argsbuf; /* Command arguments buffer */
+ u8 *inbuf; /* Input buffer */
+ u8 *rawbuf; /* Raw Input buffer */
+ u8 *cmdbuf; /* Command buffer */
+ u8 *argsbuf; /* Command arguments buffer */
unsigned long flags; /* device flags */
@@ -387,7 +387,8 @@ static int i2c_hid_hwreset(struct i2c_client *client)
static void i2c_hid_get_input(struct i2c_hid *ihid)
{
- int ret, ret_size;
+ int ret;
+ u32 ret_size;
int size = le16_to_cpu(ihid->hdesc.wMaxInputLength);
if (size > ihid->bufsize)
@@ -412,7 +413,7 @@ static void i2c_hid_get_input(struct i2c_hid *ihid)
return;
}
- if (ret_size > size) {
+ if ((ret_size > size) || (ret_size <= 2)) {
dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
__func__, size, ret_size);
return;
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index a629f7c130f0..ac63e562071f 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -447,6 +447,7 @@ static int ina2xx_probe(struct i2c_client *client,
/* set the device type */
data->config = &ina2xx_config[id->driver_data];
+ mutex_init(&data->config_lock);
if (of_property_read_u32(dev->of_node, "shunt-resistor", &val) < 0) {
struct ina2xx_platform_data *pdata = dev_get_platdata(dev);
@@ -473,8 +474,6 @@ static int ina2xx_probe(struct i2c_client *client,
return -ENODEV;
}
- mutex_init(&data->config_lock);
-
data->groups[group++] = &ina2xx_group;
if (id->driver_data == ina226)
data->groups[group++] = &ina226_group;
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 960fcb613198..ea3bc9bb1b7a 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1230,6 +1230,9 @@ static int ucma_set_ib_path(struct ucma_context *ctx,
if (!optlen)
return -EINVAL;
+ if (!ctx->cm_id->device)
+ return -EINVAL;
+
memset(&sa_path, 0, sizeof(sa_path));
ib_sa_unpack_path(path_data->path_rec, &sa_path);
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 9a99cee2665a..4fd2892613dd 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -2581,9 +2581,11 @@ static int srp_abort(struct scsi_cmnd *scmnd)
ret = FAST_IO_FAIL;
else
ret = FAILED;
- srp_free_req(ch, req, scmnd, 0);
- scmnd->result = DID_ABORT << 16;
- scmnd->scsi_done(scmnd);
+ if (ret == SUCCESS) {
+ srp_free_req(ch, req, scmnd, 0);
+ scmnd->result = DID_ABORT << 16;
+ scmnd->scsi_done(scmnd);
+ }
return ret;
}
@@ -3309,12 +3311,10 @@ static ssize_t srp_create_target(struct device *dev,
num_online_nodes());
const int ch_end = ((node_idx + 1) * target->ch_count /
num_online_nodes());
- const int cv_start = (node_idx * ibdev->num_comp_vectors /
- num_online_nodes() + target->comp_vector)
- % ibdev->num_comp_vectors;
- const int cv_end = ((node_idx + 1) * ibdev->num_comp_vectors /
- num_online_nodes() + target->comp_vector)
- % ibdev->num_comp_vectors;
+ const int cv_start = node_idx * ibdev->num_comp_vectors /
+ num_online_nodes();
+ const int cv_end = (node_idx + 1) * ibdev->num_comp_vectors /
+ num_online_nodes();
int cpu_idx = 0;
for_each_online_cpu(cpu) {
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index a7d516f973dd..10068a481e22 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -389,6 +389,7 @@ int intel_svm_bind_mm(struct device *dev, int *pasid, int flags, struct svm_dev_
pasid_max - 1, GFP_KERNEL);
if (ret < 0) {
kfree(svm);
+ kfree(sdev);
goto out;
}
svm->pasid = ret;
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 943f90e392a7..e0ae2f34623a 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -101,7 +101,7 @@ static int get_v4l2_window32(struct v4l2_window __user *kp,
static int put_v4l2_window32(struct v4l2_window __user *kp,
struct v4l2_window32 __user *up)
{
- struct v4l2_clip __user *kclips = kp->clips;
+ struct v4l2_clip __user *kclips;
struct v4l2_clip32 __user *uclips;
compat_caddr_t p;
u32 clipcount;
@@ -116,6 +116,8 @@ static int put_v4l2_window32(struct v4l2_window __user *kp,
if (!clipcount)
return 0;
+ if (get_user(kclips, &kp->clips))
+ return -EFAULT;
if (get_user(p, &up->clips))
return -EFAULT;
uclips = compat_ptr(p);
diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
index 76e8bce6f46e..ad572a0f2124 100644
--- a/drivers/mmc/host/jz4740_mmc.c
+++ b/drivers/mmc/host/jz4740_mmc.c
@@ -368,9 +368,9 @@ static void jz4740_mmc_set_irq_enabled(struct jz4740_mmc_host *host,
host->irq_mask &= ~irq;
else
host->irq_mask |= irq;
- spin_unlock_irqrestore(&host->lock, flags);
writew(host->irq_mask, host->base + JZ_REG_MMC_IMASK);
+ spin_unlock_irqrestore(&host->lock, flags);
}
static void jz4740_mmc_clock_enable(struct jz4740_mmc_host *host,
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index b2fb0528c092..07ad86759d92 100644
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -244,7 +244,7 @@ static int ubiblock_open(struct block_device *bdev, fmode_t mode)
* in any case.
*/
if (mode & FMODE_WRITE) {
- ret = -EPERM;
+ ret = -EROFS;
goto out_unlock;
}
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 27de0463226e..a2e6c7848b0a 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -889,6 +889,17 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
return -EINVAL;
}
+ /*
+ * Both UBI and UBIFS have been designed for SLC NAND and NOR flashes.
+ * MLC NAND is different and needs special care, otherwise UBI or UBIFS
+ * will die soon and you will lose all your data.
+ */
+ if (mtd->type == MTD_MLCNANDFLASH) {
+ pr_err("ubi: refuse attaching mtd%d - MLC NAND is not supported\n",
+ mtd->index);
+ return -EINVAL;
+ }
+
if (ubi_num == UBI_DEV_NUM_AUTO) {
/* Search for an empty slot in the @ubi_devices array */
for (ubi_num = 0; ubi_num < UBI_MAX_DEVICES; ubi_num++)
diff --git a/drivers/mtd/ubi/fastmap-wl.c b/drivers/mtd/ubi/fastmap-wl.c
index 30d3999dddba..ed62f1efe6eb 100644
--- a/drivers/mtd/ubi/fastmap-wl.c
+++ b/drivers/mtd/ubi/fastmap-wl.c
@@ -360,7 +360,6 @@ static void ubi_fastmap_close(struct ubi_device *ubi)
{
int i;
- flush_work(&ubi->fm_work);
return_unused_pool_pebs(ubi, &ubi->fm_pool);
return_unused_pool_pebs(ubi, &ubi->fm_wl_pool);
diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
index 27ed25252aac..cfd81eb1b532 100644
--- a/drivers/net/slip/slhc.c
+++ b/drivers/net/slip/slhc.c
@@ -509,6 +509,10 @@ slhc_uncompress(struct slcompress *comp, unsigned char *icp, int isize)
if(x < 0 || x > comp->rslot_limit)
goto bad;
+ /* Check if the cstate is initialized */
+ if (!comp->rstate[x].initialized)
+ goto bad;
+
comp->flags &=~ SLF_TOSS;
comp->recv_current = x;
} else {
@@ -673,6 +677,7 @@ slhc_remember(struct slcompress *comp, unsigned char *icp, int isize)
if (cs->cs_tcp.doff > 5)
memcpy(cs->cs_tcpopt, icp + ihl*4 + sizeof(struct tcphdr), (cs->cs_tcp.doff - 5) * 4);
cs->cs_hsize = ihl*2 + cs->cs_tcp.doff*2;
+ cs->initialized = true;
/* Put headers back on packet
* Neither header checksum is recalculated
*/
diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index f9343bee1de3..6578127db847 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -704,6 +704,12 @@ static const struct usb_device_id products[] = {
USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&wwan_info,
+}, {
+ /* Cinterion AHS3 modem by GEMALTO */
+ USB_DEVICE_AND_INTERFACE_INFO(0x1e2d, 0x0055, USB_CLASS_COMM,
+ USB_CDC_SUBCLASS_ETHERNET,
+ USB_CDC_PROTO_NONE),
+ .driver_info = (unsigned long)&wwan_info,
}, {
/* Telit modules */
USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index ebdee8f01f65..a6d429950cb0 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -618,7 +618,8 @@ static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset,
offset += 0x100;
else
ret = -EINVAL;
- ret = lan78xx_read_raw_otp(dev, offset, length, data);
+ if (!ret)
+ ret = lan78xx_read_raw_otp(dev, offset, length, data);
}
return ret;
diff --git a/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c b/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c
index b7f72f9c7988..b3691712df61 100644
--- a/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c
+++ b/drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c
@@ -1454,6 +1454,7 @@ static int rtl8187_probe(struct usb_interface *intf,
goto err_free_dev;
}
mutex_init(&priv->io_mutex);
+ mutex_init(&priv->conf_mutex);
SET_IEEE80211_DEV(dev, &intf->dev);
usb_set_intfdata(intf, dev);
@@ -1627,7 +1628,6 @@ static int rtl8187_probe(struct usb_interface *intf,
printk(KERN_ERR "rtl8187: Cannot register device\n");
goto err_free_dmabuf;
}
- mutex_init(&priv->conf_mutex);
skb_queue_head_init(&priv->b_tx_status.queue);
wiphy_info(dev->wiphy, "hwaddr %pM, %s V%d + %s, rfkill mask %d\n",
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 0b8d2655985f..fee4c01fbdfd 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -2024,7 +2024,10 @@ static void netback_changed(struct xenbus_device *dev,
case XenbusStateInitialised:
case XenbusStateReconfiguring:
case XenbusStateReconfigured:
+ break;
+
case XenbusStateUnknown:
+ wake_up_all(&module_unload_q);
break;
case XenbusStateInitWait:
@@ -2155,7 +2158,9 @@ static int xennet_remove(struct xenbus_device *dev)
xenbus_switch_state(dev, XenbusStateClosing);
wait_event(module_unload_q,
xenbus_read_driver_state(dev->otherend) ==
- XenbusStateClosing);
+ XenbusStateClosing ||
+ xenbus_read_driver_state(dev->otherend) ==
+ XenbusStateUnknown);
xenbus_switch_state(dev, XenbusStateClosed);
wait_event(module_unload_q,
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 0b3e0bfa7be5..572ca192cb1f 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -587,6 +587,7 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
{
unsigned long long sta = 0;
struct acpiphp_func *func;
+ u32 dvid;
list_for_each_entry(func, &slot->funcs, sibling) {
if (func->flags & FUNC_HAS_STA) {
@@ -597,19 +598,27 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
if (ACPI_SUCCESS(status) && sta)
break;
} else {
- u32 dvid;
-
- pci_bus_read_config_dword(slot->bus,
- PCI_DEVFN(slot->device,
- func->function),
- PCI_VENDOR_ID, &dvid);
- if (dvid != 0xffffffff) {
+ if (pci_bus_read_dev_vendor_id(slot->bus,
+ PCI_DEVFN(slot->device, func->function),
+ &dvid, 0)) {
sta = ACPI_STA_ALL;
break;
}
}
}
+ if (!sta) {
+ /*
+ * Check for the slot itself since it may be that the
+ * ACPI slot is a device below PCIe upstream port so in
+ * that case it may not even be reachable yet.
+ */
+ if (pci_bus_read_dev_vendor_id(slot->bus,
+ PCI_DEVFN(slot->device, 0), &dvid, 0)) {
+ sta = ACPI_STA_ALL;
+ }
+ }
+
return (unsigned int)sta;
}
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 4bb5262f7aee..742ca57ece8c 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -126,7 +126,7 @@ static inline int qdio_check_ccq(struct qdio_q *q, unsigned int ccq)
static int qdio_do_eqbs(struct qdio_q *q, unsigned char *state,
int start, int count, int auto_ack)
{
- int rc, tmp_count = count, tmp_start = start, nr = q->nr, retried = 0;
+ int rc, tmp_count = count, tmp_start = start, nr = q->nr;
unsigned int ccq = 0;
qperf_inc(q, eqbs);
@@ -149,14 +149,7 @@ again:
qperf_inc(q, eqbs_partial);
DBF_DEV_EVENT(DBF_WARN, q->irq_ptr, "EQBS part:%02x",
tmp_count);
- /*
- * Retry once, if that fails bail out and process the
- * extracted buffers before trying again.
- */
- if (!retried++)
- goto again;
- else
- return count - tmp_count;
+ return count - tmp_count;
}
DBF_ERROR("%4x EQBS ERROR", SCH_NO(q));
@@ -212,7 +205,10 @@ again:
return 0;
}
-/* returns number of examined buffers and their common state in *state */
+/*
+ * Returns number of examined buffers and their common state in *state.
+ * Requested number of buffers-to-examine must be > 0.
+ */
static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
unsigned char *state, unsigned int count,
int auto_ack, int merge_pending)
@@ -223,17 +219,23 @@ static inline int get_buf_states(struct qdio_q *q, unsigned int bufnr,
if (is_qebsm(q))
return qdio_do_eqbs(q, state, bufnr, count, auto_ack);
- for (i = 0; i < count; i++) {
- if (!__state) {
- __state = q->slsb.val[bufnr];
- if (merge_pending && __state == SLSB_P_OUTPUT_PENDING)
- __state = SLSB_P_OUTPUT_EMPTY;
- } else if (merge_pending) {
- if ((q->slsb.val[bufnr] & __state) != __state)
- break;
- } else if (q->slsb.val[bufnr] != __state)
- break;
+ /* get initial state: */
+ __state = q->slsb.val[bufnr];
+ if (merge_pending && __state == SLSB_P_OUTPUT_PENDING)
+ __state = SLSB_P_OUTPUT_EMPTY;
+
+ for (i = 1; i < count; i++) {
bufnr = next_buf(bufnr);
+
+ /* merge PENDING into EMPTY: */
+ if (merge_pending &&
+ q->slsb.val[bufnr] == SLSB_P_OUTPUT_PENDING &&
+ __state == SLSB_P_OUTPUT_EMPTY)
+ continue;
+
+ /* stop if next state differs from initial state: */
+ if (q->slsb.val[bufnr] != __state)
+ break;
}
*state = __state;
return i;
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index c5547bd711db..6a8300108148 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -589,6 +589,9 @@ static int imx_thermal_probe(struct platform_device *pdev)
regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN);
regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP);
+ data->irq_enabled = true;
+ data->mode = THERMAL_DEVICE_ENABLED;
+
ret = devm_request_threaded_irq(&pdev->dev, data->irq,
imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
0, "imx_thermal", data);
@@ -600,9 +603,6 @@ static int imx_thermal_probe(struct platform_device *pdev)
return ret;
}
- data->irq_enabled = true;
- data->mode = THERMAL_DEVICE_ENABLED;
-
return 0;
}
diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c
index 20a41f7de76f..6713fd1958e7 100644
--- a/drivers/thunderbolt/nhi.c
+++ b/drivers/thunderbolt/nhi.c
@@ -627,6 +627,7 @@ static const struct dev_pm_ops nhi_pm_ops = {
* we just disable hotplug, the
* pci-tunnels stay alive.
*/
+ .thaw_noirq = nhi_resume_noirq,
.restore_noirq = nhi_resume_noirq,
};
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 41dda25da049..190e5dc15738 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2238,6 +2238,12 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
}
if (tty_hung_up_p(file))
break;
+ /*
+ * Abort readers for ttys which never actually
+ * get hung up. See __tty_hangup().
+ */
+ if (test_bit(TTY_HUPPING, &tty->flags))
+ break;
if (!timeout)
break;
if (file->f_flags & O_NONBLOCK) {
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index a638c1738547..89fd20382ce4 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -702,6 +702,14 @@ static void __tty_hangup(struct tty_struct *tty, int exit_session)
return;
}
+ /*
+ * Some console devices aren't actually hung up for technical and
+ * historical reasons, which can lead to indefinite interruptible
+ * sleep in n_tty_read(). The following explicitly tells
+ * n_tty_read() to abort readers.
+ */
+ set_bit(TTY_HUPPING, &tty->flags);
+
/* inuse_filps is protected by the single tty lock,
this really needs to change if we want to flush the
workqueue with the lock held */
@@ -757,6 +765,7 @@ static void __tty_hangup(struct tty_struct *tty, int exit_session)
* can't yet guarantee all that.
*/
set_bit(TTY_HUPPED, &tty->flags);
+ clear_bit(TTY_HUPPING, &tty->flags);
tty_unlock(tty);
if (f)
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index 358ca8dd784f..a5240b4d7ab9 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -208,8 +208,13 @@ static int generic_suspend(struct usb_device *udev, pm_message_t msg)
if (!udev->parent)
rc = hcd_bus_suspend(udev, msg);
- /* Non-root devices don't need to do anything for FREEZE or PRETHAW */
- else if (msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW)
+ /*
+ * Non-root USB2 devices don't need to do anything for FREEZE
+ * or PRETHAW. USB3 devices don't support global suspend and
+ * needs to be selectively suspended.
+ */
+ else if ((msg.event == PM_EVENT_FREEZE || msg.event == PM_EVENT_PRETHAW)
+ && (udev->speed < USB_SPEED_SUPER))
rc = 0;
else
rc = usb_port_suspend(udev, msg);
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index d2c0c1a8d979..68230adf2449 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -167,7 +167,7 @@ static int dwc3_pci_probe(struct pci_dev *pci,
ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
if (ret) {
dev_err(dev, "couldn't add resources to dwc3 device\n");
- return ret;
+ goto err;
}
pci_set_drvdata(pci, dwc3);
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index 10d30afe4a3c..a0d1417362cd 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -114,15 +114,19 @@ static int service_tx_status_request(
}
is_in = epnum & USB_DIR_IN;
- if (is_in) {
- epnum &= 0x0f;
+ epnum &= 0x0f;
+ if (epnum >= MUSB_C_NUM_EPS) {
+ handled = -EINVAL;
+ break;
+ }
+
+ if (is_in)
ep = &musb->endpoints[epnum].ep_in;
- } else {
+ else
ep = &musb->endpoints[epnum].ep_out;
- }
regs = musb->endpoints[epnum].regs;
- if (epnum >= MUSB_C_NUM_EPS || !ep->desc) {
+ if (!ep->desc) {
handled = -EINVAL;
break;
}
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index fe2b470d7ec6..c55c632a3b24 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -752,6 +752,62 @@ static int __init init_pci_cap_pcix_perm(struct perm_bits *perm)
return 0;
}
+static int vfio_exp_config_write(struct vfio_pci_device *vdev, int pos,
+ int count, struct perm_bits *perm,
+ int offset, __le32 val)
+{
+ __le16 *ctrl = (__le16 *)(vdev->vconfig + pos -
+ offset + PCI_EXP_DEVCTL);
+ int readrq = le16_to_cpu(*ctrl) & PCI_EXP_DEVCTL_READRQ;
+
+ count = vfio_default_config_write(vdev, pos, count, perm, offset, val);
+ if (count < 0)
+ return count;
+
+ /*
+ * The FLR bit is virtualized, if set and the device supports PCIe
+ * FLR, issue a reset_function. Regardless, clear the bit, the spec
+ * requires it to be always read as zero. NB, reset_function might
+ * not use a PCIe FLR, we don't have that level of granularity.
+ */
+ if (*ctrl & cpu_to_le16(PCI_EXP_DEVCTL_BCR_FLR)) {
+ u32 cap;
+ int ret;
+
+ *ctrl &= ~cpu_to_le16(PCI_EXP_DEVCTL_BCR_FLR);
+
+ ret = pci_user_read_config_dword(vdev->pdev,
+ pos - offset + PCI_EXP_DEVCAP,
+ &cap);
+
+ if (!ret && (cap & PCI_EXP_DEVCAP_FLR))
+ pci_try_reset_function(vdev->pdev);
+ }
+
+ /*
+ * MPS is virtualized to the user, writes do not change the physical
+ * register since determining a proper MPS value requires a system wide
+ * device view. The MRRS is largely independent of MPS, but since the
+ * user does not have that system-wide view, they might set a safe, but
+ * inefficiently low value. Here we allow writes through to hardware,
+ * but we set the floor to the physical device MPS setting, so that
+ * we can at least use full TLPs, as defined by the MPS value.
+ *
+ * NB, if any devices actually depend on an artificially low MRRS
+ * setting, this will need to be revisited, perhaps with a quirk
+ * though pcie_set_readrq().
+ */
+ if (readrq != (le16_to_cpu(*ctrl) & PCI_EXP_DEVCTL_READRQ)) {
+ readrq = 128 <<
+ ((le16_to_cpu(*ctrl) & PCI_EXP_DEVCTL_READRQ) >> 12);
+ readrq = max(readrq, pcie_get_mps(vdev->pdev));
+
+ pcie_set_readrq(vdev->pdev, readrq);
+ }
+
+ return count;
+}
+
/* Permissions for PCI Express capability */
static int __init init_pci_cap_exp_perm(struct perm_bits *perm)
{
@@ -759,26 +815,67 @@ static int __init init_pci_cap_exp_perm(struct perm_bits *perm)
if (alloc_perm_bits(perm, PCI_CAP_EXP_ENDPOINT_SIZEOF_V2))
return -ENOMEM;
+ perm->writefn = vfio_exp_config_write;
+
p_setb(perm, PCI_CAP_LIST_NEXT, (u8)ALL_VIRT, NO_WRITE);
/*
- * Allow writes to device control fields (includes FLR!)
- * but not to devctl_phantom which could confuse IOMMU
- * or to the ARI bit in devctl2 which is set at probe time
+ * Allow writes to device control fields, except devctl_phantom,
+ * which could confuse IOMMU, MPS, which can break communication
+ * with other physical devices, and the ARI bit in devctl2, which
+ * is set at probe time. FLR and MRRS get virtualized via our
+ * writefn.
*/
- p_setw(perm, PCI_EXP_DEVCTL, NO_VIRT, ~PCI_EXP_DEVCTL_PHANTOM);
+ p_setw(perm, PCI_EXP_DEVCTL,
+ PCI_EXP_DEVCTL_BCR_FLR | PCI_EXP_DEVCTL_PAYLOAD |
+ PCI_EXP_DEVCTL_READRQ, ~PCI_EXP_DEVCTL_PHANTOM);
p_setw(perm, PCI_EXP_DEVCTL2, NO_VIRT, ~PCI_EXP_DEVCTL2_ARI);
return 0;
}
+static int vfio_af_config_write(struct vfio_pci_device *vdev, int pos,
+ int count, struct perm_bits *perm,
+ int offset, __le32 val)
+{
+ u8 *ctrl = vdev->vconfig + pos - offset + PCI_AF_CTRL;
+
+ count = vfio_default_config_write(vdev, pos, count, perm, offset, val);
+ if (count < 0)
+ return count;
+
+ /*
+ * The FLR bit is virtualized, if set and the device supports AF
+ * FLR, issue a reset_function. Regardless, clear the bit, the spec
+ * requires it to be always read as zero. NB, reset_function might
+ * not use an AF FLR, we don't have that level of granularity.
+ */
+ if (*ctrl & PCI_AF_CTRL_FLR) {
+ u8 cap;
+ int ret;
+
+ *ctrl &= ~PCI_AF_CTRL_FLR;
+
+ ret = pci_user_read_config_byte(vdev->pdev,
+ pos - offset + PCI_AF_CAP,
+ &cap);
+
+ if (!ret && (cap & PCI_AF_CAP_FLR) && (cap & PCI_AF_CAP_TP))
+ pci_try_reset_function(vdev->pdev);
+ }
+
+ return count;
+}
+
/* Permissions for Advanced Function capability */
static int __init init_pci_cap_af_perm(struct perm_bits *perm)
{
if (alloc_perm_bits(perm, pci_cap_length[PCI_CAP_ID_AF]))
return -ENOMEM;
+ perm->writefn = vfio_af_config_write;
+
p_setb(perm, PCI_CAP_LIST_NEXT, (u8)ALL_VIRT, NO_WRITE);
- p_setb(perm, PCI_AF_CTRL, NO_VIRT, PCI_AF_CTRL_FLR);
+ p_setb(perm, PCI_AF_CTRL, PCI_AF_CTRL_FLR, PCI_AF_CTRL_FLR);
return 0;
}
diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index 016bd9355190..aa93df5833dc 100644
--- a/drivers/watchdog/f71808e_wdt.c
+++ b/drivers/watchdog/f71808e_wdt.c
@@ -450,7 +450,7 @@ static bool watchdog_is_running(void)
is_running = (superio_inb(watchdog.sioaddr, SIO_REG_ENABLE) & BIT(0))
&& (superio_inb(watchdog.sioaddr, F71808FG_REG_WDT_CONF)
- & F71808FG_FLAG_WD_EN);
+ & BIT(F71808FG_FLAG_WD_EN));
superio_exit(watchdog.sioaddr);
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 7a54c6a867c8..500098cdb960 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -746,7 +746,7 @@ static int autofs4_dir_mkdir(struct inode *dir, struct dentry *dentry, umode_t m
autofs4_del_active(dentry);
- inode = autofs4_get_inode(dir->i_sb, S_IFDIR | 0555);
+ inode = autofs4_get_inode(dir->i_sb, S_IFDIR | mode);
if (!inode)
return -ENOMEM;
d_add(dentry, inode);
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index f97110461c19..78c51ce913db 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -242,8 +242,6 @@ static int ext4_init_block_bitmap(struct super_block *sb,
*/
ext4_mark_bitmap_end(num_clusters_in_group(sb, block_group),
sb->s_blocksize * 8, bh->b_data);
- ext4_block_bitmap_csum_set(sb, block_group, gdp, bh);
- ext4_group_desc_csum_set(sb, block_group, gdp);
return 0;
}
@@ -447,6 +445,7 @@ ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
err = ext4_init_block_bitmap(sb, bh, block_group, desc);
set_bitmap_uptodate(bh);
set_buffer_uptodate(bh);
+ set_buffer_verified(bh);
ext4_unlock_group(sb, block_group);
unlock_buffer(bh);
if (err) {
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 5388207d2832..e10c12f59c58 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -63,44 +63,6 @@ void ext4_mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
memset(bitmap + (i >> 3), 0xff, (end_bit - i) >> 3);
}
-/* Initializes an uninitialized inode bitmap */
-static int ext4_init_inode_bitmap(struct super_block *sb,
- struct buffer_head *bh,
- ext4_group_t block_group,
- struct ext4_group_desc *gdp)
-{
- struct ext4_group_info *grp;
- struct ext4_sb_info *sbi = EXT4_SB(sb);
- J_ASSERT_BH(bh, buffer_locked(bh));
-
- /* If checksum is bad mark all blocks and inodes use to prevent
- * allocation, essentially implementing a per-group read-only flag. */
- if (!ext4_group_desc_csum_verify(sb, block_group, gdp)) {
- grp = ext4_get_group_info(sb, block_group);
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
- if (!EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) {
- int count;
- count = ext4_free_inodes_count(sb, gdp);
- percpu_counter_sub(&sbi->s_freeinodes_counter,
- count);
- }
- set_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &grp->bb_state);
- return -EFSBADCRC;
- }
-
- memset(bh->b_data, 0, (EXT4_INODES_PER_GROUP(sb) + 7) / 8);
- ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), sb->s_blocksize * 8,
- bh->b_data);
- ext4_inode_bitmap_csum_set(sb, block_group, gdp, bh,
- EXT4_INODES_PER_GROUP(sb) / 8);
- ext4_group_desc_csum_set(sb, block_group, gdp);
-
- return 0;
-}
-
void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate)
{
if (uptodate) {
@@ -184,17 +146,14 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
ext4_lock_group(sb, block_group);
if (desc->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
- err = ext4_init_inode_bitmap(sb, bh, block_group, desc);
+ memset(bh->b_data, 0, (EXT4_INODES_PER_GROUP(sb) + 7) / 8);
+ ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb),
+ sb->s_blocksize * 8, bh->b_data);
set_bitmap_uptodate(bh);
set_buffer_uptodate(bh);
set_buffer_verified(bh);
ext4_unlock_group(sb, block_group);
unlock_buffer(bh);
- if (err) {
- ext4_error(sb, "Failed to init inode bitmap for group "
- "%u: %d", block_group, err);
- goto out;
- }
return bh;
}
ext4_unlock_group(sb, block_group);
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index dad8e7bdf0a6..3006b81c107f 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -376,7 +376,7 @@ out:
static int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
unsigned int len)
{
- int ret, size;
+ int ret, size, no_expand;
struct ext4_inode_info *ei = EXT4_I(inode);
if (!ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA))
@@ -386,15 +386,14 @@ static int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
if (size < len)
return -ENOSPC;
- down_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_lock_xattr(inode, &no_expand);
if (ei->i_inline_off)
ret = ext4_update_inline_data(handle, inode, len);
else
ret = ext4_create_inline_data(handle, inode, len);
- up_write(&EXT4_I(inode)->xattr_sem);
-
+ ext4_write_unlock_xattr(inode, &no_expand);
return ret;
}
@@ -523,7 +522,7 @@ static int ext4_convert_inline_data_to_extent(struct address_space *mapping,
struct inode *inode,
unsigned flags)
{
- int ret, needed_blocks;
+ int ret, needed_blocks, no_expand;
handle_t *handle = NULL;
int retries = 0, sem_held = 0;
struct page *page = NULL;
@@ -563,7 +562,7 @@ retry:
goto out;
}
- down_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_lock_xattr(inode, &no_expand);
sem_held = 1;
/* If some one has already done this for us, just exit. */
if (!ext4_has_inline_data(inode)) {
@@ -599,7 +598,7 @@ retry:
page_cache_release(page);
page = NULL;
ext4_orphan_add(handle, inode);
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
sem_held = 0;
ext4_journal_stop(handle);
handle = NULL;
@@ -625,7 +624,7 @@ out:
page_cache_release(page);
}
if (sem_held)
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
if (handle)
ext4_journal_stop(handle);
brelse(iloc.bh);
@@ -718,7 +717,7 @@ convert:
int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len,
unsigned copied, struct page *page)
{
- int ret;
+ int ret, no_expand;
void *kaddr;
struct ext4_iloc iloc;
@@ -736,7 +735,7 @@ int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len,
goto out;
}
- down_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_lock_xattr(inode, &no_expand);
BUG_ON(!ext4_has_inline_data(inode));
kaddr = kmap_atomic(page);
@@ -746,7 +745,7 @@ int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len,
/* clear page dirty so that writepages wouldn't work for us. */
ClearPageDirty(page);
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
brelse(iloc.bh);
out:
return copied;
@@ -757,7 +756,7 @@ ext4_journalled_write_inline_data(struct inode *inode,
unsigned len,
struct page *page)
{
- int ret;
+ int ret, no_expand;
void *kaddr;
struct ext4_iloc iloc;
@@ -767,11 +766,11 @@ ext4_journalled_write_inline_data(struct inode *inode,
return NULL;
}
- down_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_lock_xattr(inode, &no_expand);
kaddr = kmap_atomic(page);
ext4_write_inline_data(inode, &iloc, kaddr, 0, len);
kunmap_atomic(kaddr);
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
return iloc.bh;
}
@@ -1255,7 +1254,7 @@ out:
int ext4_try_add_inline_entry(handle_t *handle, struct ext4_filename *fname,
struct dentry *dentry, struct inode *inode)
{
- int ret, inline_size;
+ int ret, inline_size, no_expand;
void *inline_start;
struct ext4_iloc iloc;
struct inode *dir = d_inode(dentry->d_parent);
@@ -1264,7 +1263,7 @@ int ext4_try_add_inline_entry(handle_t *handle, struct ext4_filename *fname,
if (ret)
return ret;
- down_write(&EXT4_I(dir)->xattr_sem);
+ ext4_write_lock_xattr(dir, &no_expand);
if (!ext4_has_inline_data(dir))
goto out;
@@ -1310,7 +1309,7 @@ int ext4_try_add_inline_entry(handle_t *handle, struct ext4_filename *fname,
out:
ext4_mark_inode_dirty(handle, dir);
- up_write(&EXT4_I(dir)->xattr_sem);
+ ext4_write_unlock_xattr(dir, &no_expand);
brelse(iloc.bh);
return ret;
}
@@ -1670,7 +1669,7 @@ int ext4_delete_inline_entry(handle_t *handle,
struct buffer_head *bh,
int *has_inline_data)
{
- int err, inline_size;
+ int err, inline_size, no_expand;
struct ext4_iloc iloc;
void *inline_start;
@@ -1678,7 +1677,7 @@ int ext4_delete_inline_entry(handle_t *handle,
if (err)
return err;
- down_write(&EXT4_I(dir)->xattr_sem);
+ ext4_write_lock_xattr(dir, &no_expand);
if (!ext4_has_inline_data(dir)) {
*has_inline_data = 0;
goto out;
@@ -1713,7 +1712,7 @@ int ext4_delete_inline_entry(handle_t *handle,
ext4_show_inline_dir(dir, iloc.bh, inline_start, inline_size);
out:
- up_write(&EXT4_I(dir)->xattr_sem);
+ ext4_write_unlock_xattr(dir, &no_expand);
brelse(iloc.bh);
if (err != -ENOENT)
ext4_std_error(dir->i_sb, err);
@@ -1812,11 +1811,11 @@ out:
int ext4_destroy_inline_data(handle_t *handle, struct inode *inode)
{
- int ret;
+ int ret, no_expand;
- down_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_lock_xattr(inode, &no_expand);
ret = ext4_destroy_inline_data_nolock(handle, inode);
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
return ret;
}
@@ -1901,7 +1900,7 @@ out:
void ext4_inline_data_truncate(struct inode *inode, int *has_inline)
{
handle_t *handle;
- int inline_size, value_len, needed_blocks;
+ int inline_size, value_len, needed_blocks, no_expand;
size_t i_size;
void *value = NULL;
struct ext4_xattr_ibody_find is = {
@@ -1918,7 +1917,7 @@ void ext4_inline_data_truncate(struct inode *inode, int *has_inline)
if (IS_ERR(handle))
return;
- down_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_lock_xattr(inode, &no_expand);
if (!ext4_has_inline_data(inode)) {
*has_inline = 0;
ext4_journal_stop(handle);
@@ -1976,7 +1975,7 @@ out_error:
up_write(&EXT4_I(inode)->i_data_sem);
out:
brelse(is.iloc.bh);
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
kfree(value);
if (inode->i_nlink)
ext4_orphan_del(handle, inode);
@@ -1992,7 +1991,7 @@ out:
int ext4_convert_inline_data(struct inode *inode)
{
- int error, needed_blocks;
+ int error, needed_blocks, no_expand;
handle_t *handle;
struct ext4_iloc iloc;
@@ -2014,15 +2013,10 @@ int ext4_convert_inline_data(struct inode *inode)
goto out_free;
}
- down_write(&EXT4_I(inode)->xattr_sem);
- if (!ext4_has_inline_data(inode)) {
- up_write(&EXT4_I(inode)->xattr_sem);
- goto out;
- }
-
- error = ext4_convert_inline_data_nolock(handle, inode, &iloc);
- up_write(&EXT4_I(inode)->xattr_sem);
-out:
+ ext4_write_lock_xattr(inode, &no_expand);
+ if (ext4_has_inline_data(inode))
+ error = ext4_convert_inline_data_nolock(handle, inode, &iloc);
+ ext4_write_unlock_xattr(inode, &no_expand);
ext4_journal_stop(handle);
out_free:
brelse(iloc.bh);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index f0cabc8c96cb..56ce7fd0f0d0 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1515,6 +1515,8 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
BUG_ON(!PageLocked(page));
BUG_ON(PageWriteback(page));
if (invalidate) {
+ if (page_mapped(page))
+ clear_page_dirty_for_io(page);
block_invalidatepage(page, 0, PAGE_CACHE_SIZE);
ClearPageUptodate(page);
}
@@ -3256,29 +3258,29 @@ static ssize_t ext4_ext_direct_IO(struct kiocb *iocb, struct iov_iter *iter,
* case, we allocate an io_end structure to hook to the iocb.
*/
iocb->private = NULL;
- ext4_inode_aio_set(inode, NULL);
- if (!is_sync_kiocb(iocb)) {
- io_end = ext4_init_io_end(inode, GFP_NOFS);
- if (!io_end) {
- ret = -ENOMEM;
- goto retake_lock;
- }
- /*
- * Grab reference for DIO. Will be dropped in ext4_end_io_dio()
- */
- iocb->private = ext4_get_io_end(io_end);
- /*
- * we save the io structure for current async direct
- * IO, so that later ext4_map_blocks() could flag the
- * io structure whether there is a unwritten extents
- * needs to be converted when IO is completed.
- */
- ext4_inode_aio_set(inode, io_end);
- }
-
if (overwrite) {
get_block_func = ext4_get_block_write_nolock;
} else {
+ ext4_inode_aio_set(inode, NULL);
+ if (!is_sync_kiocb(iocb)) {
+ io_end = ext4_init_io_end(inode, GFP_NOFS);
+ if (!io_end) {
+ ret = -ENOMEM;
+ goto retake_lock;
+ }
+ /*
+ * Grab reference for DIO. Will be dropped in
+ * ext4_end_io_dio()
+ */
+ iocb->private = ext4_get_io_end(io_end);
+ /*
+ * we save the io structure for current async direct
+ * IO, so that later ext4_map_blocks() could flag the
+ * io structure whether there is a unwritten extents
+ * needs to be converted when IO is completed.
+ */
+ ext4_inode_aio_set(inode, io_end);
+ }
get_block_func = ext4_get_block_write;
dio_flags = DIO_LOCKING;
}
@@ -4231,6 +4233,12 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
raw_inode = ext4_raw_inode(&iloc);
+ if ((ino == EXT4_ROOT_INO) && (raw_inode->i_links_count == 0)) {
+ EXT4_ERROR_INODE(inode, "root inode unallocated");
+ ret = -EFSCORRUPTED;
+ goto bad_inode;
+ }
+
if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) {
ei->i_extra_isize = le16_to_cpu(raw_inode->i_extra_isize);
if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize >
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 742455292dfe..0e0438b5ddbe 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2131,6 +2131,8 @@ static int ext4_check_descriptors(struct super_block *sb,
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Block bitmap for group %u overlaps "
"superblock", i);
+ if (!(sb->s_flags & MS_RDONLY))
+ return 0;
}
if (block_bitmap < first_block || block_bitmap > last_block) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
@@ -2143,6 +2145,8 @@ static int ext4_check_descriptors(struct super_block *sb,
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Inode bitmap for group %u overlaps "
"superblock", i);
+ if (!(sb->s_flags & MS_RDONLY))
+ return 0;
}
if (inode_bitmap < first_block || inode_bitmap > last_block) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
@@ -2155,6 +2159,8 @@ static int ext4_check_descriptors(struct super_block *sb,
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Inode table for group %u overlaps "
"superblock", i);
+ if (!(sb->s_flags & MS_RDONLY))
+ return 0;
}
if (inode_table < first_block ||
inode_table + sbi->s_itb_per_group - 1 > last_block) {
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 8d661b3c47b6..c7cad05aed27 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1117,16 +1117,14 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
struct ext4_xattr_block_find bs = {
.s = { .not_found = -ENODATA, },
};
- unsigned long no_expand;
+ int no_expand;
int error;
if (!name)
return -EINVAL;
if (strlen(name) > 255)
return -ERANGE;
- down_write(&EXT4_I(inode)->xattr_sem);
- no_expand = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND);
- ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND);
+ ext4_write_lock_xattr(inode, &no_expand);
error = ext4_reserve_inode_write(handle, inode, &is.iloc);
if (error)
@@ -1187,7 +1185,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
ext4_xattr_update_super_block(handle, inode->i_sb);
inode->i_ctime = ext4_current_time(inode);
if (!value)
- ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
+ no_expand = 0;
error = ext4_mark_iloc_dirty(handle, inode, &is.iloc);
/*
* The bh is consumed by ext4_mark_iloc_dirty, even with
@@ -1201,9 +1199,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
cleanup:
brelse(is.iloc.bh);
brelse(bs.bh);
- if (no_expand == 0)
- ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
return error;
}
@@ -1287,12 +1283,11 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
int error = 0, tried_min_extra_isize = 0;
int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize);
int isize_diff; /* How much do we need to grow i_extra_isize */
+ int no_expand;
+
+ if (ext4_write_trylock_xattr(inode, &no_expand) == 0)
+ return 0;
- down_write(&EXT4_I(inode)->xattr_sem);
- /*
- * Set EXT4_STATE_NO_EXPAND to avoid recursion when marking inode dirty
- */
- ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND);
retry:
isize_diff = new_extra_isize - EXT4_I(inode)->i_extra_isize;
if (EXT4_I(inode)->i_extra_isize >= new_extra_isize)
@@ -1486,8 +1481,7 @@ retry:
}
brelse(bh);
out:
- ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
- up_write(&EXT4_I(inode)->xattr_sem);
+ ext4_write_unlock_xattr(inode, &no_expand);
return 0;
cleanup:
@@ -1499,10 +1493,10 @@ cleanup:
kfree(bs);
brelse(bh);
/*
- * We deliberately leave EXT4_STATE_NO_EXPAND set here since inode
- * size expansion failed.
+ * Inode size expansion failed; don't try again
*/
- up_write(&EXT4_I(inode)->xattr_sem);
+ no_expand = 1;
+ ext4_write_unlock_xattr(inode, &no_expand);
return error;
}
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index ddc0957760ba..c000ed398555 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -101,6 +101,38 @@ extern const struct xattr_handler ext4_xattr_security_handler;
#define EXT4_XATTR_NAME_ENCRYPTION_CONTEXT "c"
+/*
+ * The EXT4_STATE_NO_EXPAND is overloaded and used for two purposes.
+ * The first is to signal that there the inline xattrs and data are
+ * taking up so much space that we might as well not keep trying to
+ * expand it. The second is that xattr_sem is taken for writing, so
+ * we shouldn't try to recurse into the inode expansion. For this
+ * second case, we need to make sure that we take save and restore the
+ * NO_EXPAND state flag appropriately.
+ */
+static inline void ext4_write_lock_xattr(struct inode *inode, int *save)
+{
+ down_write(&EXT4_I(inode)->xattr_sem);
+ *save = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND);
+ ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND);
+}
+
+static inline int ext4_write_trylock_xattr(struct inode *inode, int *save)
+{
+ if (down_write_trylock(&EXT4_I(inode)->xattr_sem) == 0)
+ return 0;
+ *save = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND);
+ ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND);
+ return 1;
+}
+
+static inline void ext4_write_unlock_xattr(struct inode *inode, int *save)
+{
+ if (*save == 0)
+ ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
+ up_write(&EXT4_I(inode)->xattr_sem);
+}
+
extern ssize_t ext4_listxattr(struct dentry *, char *, size_t);
extern int ext4_xattr_get(struct inode *, int, const char *, void *, size_t);
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 22b30249fbcb..0fe667875852 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -747,11 +747,12 @@ int inode_congested(struct inode *inode, int cong_bits)
*/
if (inode && inode_to_wb_is_valid(inode)) {
struct bdi_writeback *wb;
- bool locked, congested;
+ struct wb_lock_cookie lock_cookie = {};
+ bool congested;
- wb = unlocked_inode_to_wb_begin(inode, &locked);
+ wb = unlocked_inode_to_wb_begin(inode, &lock_cookie);
congested = wb_congested(wb, cong_bits);
- unlocked_inode_to_wb_end(inode, locked);
+ unlocked_inode_to_wb_end(inode, &lock_cookie);
return congested;
}
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 624a57a9c4aa..4759df4eb8ce 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -914,7 +914,7 @@ out:
}
/*
- * This is a variaon of __jbd2_update_log_tail which checks for validity of
+ * This is a variation of __jbd2_update_log_tail which checks for validity of
* provided log tail and locks j_checkpoint_mutex. So it is safe against races
* with other threads updating log tail.
*/
@@ -1384,6 +1384,9 @@ int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
journal_superblock_t *sb = journal->j_superblock;
int ret;
+ if (is_journal_aborted(journal))
+ return -EIO;
+
BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
tail_block, tail_tid);
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index d86c5e3176a1..600da1a4df29 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -345,7 +345,7 @@ static void jffs2_put_super (struct super_block *sb)
static void jffs2_kill_sb(struct super_block *sb)
{
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
- if (!(sb->s_flags & MS_RDONLY))
+ if (c && !(sb->s_flags & MS_RDONLY))
jffs2_stop_garbage_collect_thread(c);
kill_mtd_super(sb);
kfree(c);
diff --git a/fs/namei.c b/fs/namei.c
index 0fcad42e4d3e..de57dd59d95f 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -219,9 +219,10 @@ getname_kernel(const char * filename)
if (len <= EMBEDDED_NAME_MAX) {
result->name = (char *)result->iname;
} else if (len <= PATH_MAX) {
+ const size_t size = offsetof(struct filename, iname[1]);
struct filename *tmp;
- tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
+ tmp = kmalloc(size, GFP_KERNEL);
if (unlikely(!tmp)) {
__putname(result);
return ERR_PTR(-ENOMEM);
diff --git a/fs/namespace.c b/fs/namespace.c
index ec4078d16eb7..a879560ea144 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1018,7 +1018,8 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root,
goto out_free;
}
- mnt->mnt.mnt_flags = old->mnt.mnt_flags & ~(MNT_WRITE_HOLD|MNT_MARKED);
+ mnt->mnt.mnt_flags = old->mnt.mnt_flags;
+ mnt->mnt.mnt_flags &= ~(MNT_WRITE_HOLD|MNT_MARKED|MNT_INTERNAL);
/* Don't allow unprivileged users to change mount flags */
if (flag & CL_UNPRIVILEGED) {
mnt->mnt.mnt_flags |= MNT_LOCK_ATIME;
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c
index e0e5f7c3c99f..8a459b179183 100644
--- a/fs/notify/fanotify/fanotify.c
+++ b/fs/notify/fanotify/fanotify.c
@@ -92,7 +92,7 @@ static bool fanotify_should_send_event(struct fsnotify_mark *inode_mark,
u32 event_mask,
void *data, int data_type)
{
- __u32 marks_mask, marks_ignored_mask;
+ __u32 marks_mask = 0, marks_ignored_mask = 0;
struct path *path = data;
pr_debug("%s: inode_mark=%p vfsmnt_mark=%p mask=%x data=%p"
@@ -108,24 +108,20 @@ static bool fanotify_should_send_event(struct fsnotify_mark *inode_mark,
!d_can_lookup(path->dentry))
return false;
- if (inode_mark && vfsmnt_mark) {
- marks_mask = (vfsmnt_mark->mask | inode_mark->mask);
- marks_ignored_mask = (vfsmnt_mark->ignored_mask | inode_mark->ignored_mask);
- } else if (inode_mark) {
- /*
- * if the event is for a child and this inode doesn't care about
- * events on the child, don't send it!
- */
- if ((event_mask & FS_EVENT_ON_CHILD) &&
- !(inode_mark->mask & FS_EVENT_ON_CHILD))
- return false;
- marks_mask = inode_mark->mask;
- marks_ignored_mask = inode_mark->ignored_mask;
- } else if (vfsmnt_mark) {
- marks_mask = vfsmnt_mark->mask;
- marks_ignored_mask = vfsmnt_mark->ignored_mask;
- } else {
- BUG();
+ /*
+ * if the event is for a child and this inode doesn't care about
+ * events on the child, don't send it!
+ */
+ if (inode_mark &&
+ (!(event_mask & FS_EVENT_ON_CHILD) ||
+ (inode_mark->mask & FS_EVENT_ON_CHILD))) {
+ marks_mask |= inode_mark->mask;
+ marks_ignored_mask |= inode_mark->ignored_mask;
+ }
+
+ if (vfsmnt_mark) {
+ marks_mask |= vfsmnt_mark->mask;
+ marks_ignored_mask |= vfsmnt_mark->ignored_mask;
}
if (d_is_dir(path->dentry) &&
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index a72097b625ef..00985f9db9f7 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2643,7 +2643,7 @@ static int journal_init_dev(struct super_block *super,
if (IS_ERR(journal->j_dev_bd)) {
result = PTR_ERR(journal->j_dev_bd);
journal->j_dev_bd = NULL;
- reiserfs_warning(super,
+ reiserfs_warning(super, "sh-457",
"journal_init_dev: Cannot open '%s': %i",
jdev_name, result);
return result;
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 1fd90c079537..0bb6de356451 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1728,8 +1728,11 @@ static void ubifs_remount_ro(struct ubifs_info *c)
dbg_save_space_info(c);
- for (i = 0; i < c->jhead_cnt; i++)
- ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ for (i = 0; i < c->jhead_cnt; i++) {
+ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ if (err)
+ ubifs_ro_mode(c, err);
+ }
c->mst_node->flags &= ~cpu_to_le32(UBIFS_MST_DIRTY);
c->mst_node->flags |= cpu_to_le32(UBIFS_MST_NO_ORPHS);
@@ -1795,8 +1798,11 @@ static void ubifs_put_super(struct super_block *sb)
int err;
/* Synchronize write-buffers */
- for (i = 0; i < c->jhead_cnt; i++)
- ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ for (i = 0; i < c->jhead_cnt; i++) {
+ err = ubifs_wbuf_sync(&c->jheads[i].wbuf);
+ if (err)
+ ubifs_ro_mode(c, err);
+ }
/*
* We are being cleanly unmounted which means the
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 140c29635069..a307c37c2e6c 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -191,6 +191,11 @@ static inline void set_bdi_congested(struct backing_dev_info *bdi, int sync)
set_wb_congested(bdi->wb.congested, sync);
}
+struct wb_lock_cookie {
+ bool locked;
+ unsigned long flags;
+};
+
#ifdef CONFIG_CGROUP_WRITEBACK
/**
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 89d3de3e096b..361274ce5815 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -366,7 +366,7 @@ static inline struct bdi_writeback *inode_to_wb(struct inode *inode)
/**
* unlocked_inode_to_wb_begin - begin unlocked inode wb access transaction
* @inode: target inode
- * @lockedp: temp bool output param, to be passed to the end function
+ * @cookie: output param, to be passed to the end function
*
* The caller wants to access the wb associated with @inode but isn't
* holding inode->i_lock, mapping->tree_lock or wb->list_lock. This
@@ -374,12 +374,12 @@ static inline struct bdi_writeback *inode_to_wb(struct inode *inode)
* association doesn't change until the transaction is finished with
* unlocked_inode_to_wb_end().
*
- * The caller must call unlocked_inode_to_wb_end() with *@...kdep
- * afterwards and can't sleep during transaction. IRQ may or may not be
- * disabled on return.
+ * The caller must call unlocked_inode_to_wb_end() with *@...kie afterwards and
+ * can't sleep during the transaction. IRQs may or may not be disabled on
+ * return.
*/
static inline struct bdi_writeback *
-unlocked_inode_to_wb_begin(struct inode *inode, bool *lockedp)
+unlocked_inode_to_wb_begin(struct inode *inode, struct wb_lock_cookie *cookie)
{
rcu_read_lock();
@@ -387,10 +387,10 @@ unlocked_inode_to_wb_begin(struct inode *inode, bool *lockedp)
* Paired with store_release in inode_switch_wb_work_fn() and
* ensures that we see the new wb if we see cleared I_WB_SWITCH.
*/
- *lockedp = smp_load_acquire(&inode->i_state) & I_WB_SWITCH;
+ cookie->locked = smp_load_acquire(&inode->i_state) & I_WB_SWITCH;
- if (unlikely(*lockedp))
- spin_lock_irq(&inode->i_mapping->tree_lock);
+ if (unlikely(cookie->locked))
+ spin_lock_irqsave(&inode->i_mapping->tree_lock, cookie->flags);
/*
* Protected by either !I_WB_SWITCH + rcu_read_lock() or tree_lock.
@@ -402,12 +402,14 @@ unlocked_inode_to_wb_begin(struct inode *inode, bool *lockedp)
/**
* unlocked_inode_to_wb_end - end inode wb access transaction
* @inode: target inode
- * @locked: *@...kedp from unlocked_inode_to_wb_begin()
+ * @cookie: @cookie from unlocked_inode_to_wb_begin()
*/
-static inline void unlocked_inode_to_wb_end(struct inode *inode, bool locked)
+static inline void unlocked_inode_to_wb_end(struct inode *inode,
+ struct wb_lock_cookie *cookie)
{
- if (unlikely(locked))
- spin_unlock_irq(&inode->i_mapping->tree_lock);
+ if (unlikely(cookie->locked))
+ spin_unlock_irqrestore(&inode->i_mapping->tree_lock,
+ cookie->flags);
rcu_read_unlock();
}
@@ -454,12 +456,13 @@ static inline struct bdi_writeback *inode_to_wb(struct inode *inode)
}
static inline struct bdi_writeback *
-unlocked_inode_to_wb_begin(struct inode *inode, bool *lockedp)
+unlocked_inode_to_wb_begin(struct inode *inode, struct wb_lock_cookie *cookie)
{
return inode_to_wb(inode);
}
-static inline void unlocked_inode_to_wb_end(struct inode *inode, bool locked)
+static inline void unlocked_inode_to_wb_end(struct inode *inode,
+ struct wb_lock_cookie *cookie)
{
}
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 251a1d382e23..fd86687f8119 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -793,7 +793,7 @@ extern int hidinput_connect(struct hid_device *hid, unsigned int force);
extern void hidinput_disconnect(struct hid_device *);
int hid_set_field(struct hid_field *, unsigned, __s32);
-int hid_input_report(struct hid_device *, int type, u8 *, int, int);
+int hid_input_report(struct hid_device *, int type, u8 *, u32, int);
int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
struct hid_field *hidinput_get_led_field(struct hid_device *hid);
unsigned int hidinput_count_leds(struct hid_device *hid);
@@ -1098,13 +1098,13 @@ static inline void hid_hw_wait(struct hid_device *hdev)
*
* @report: the report we want to know the length
*/
-static inline int hid_report_len(struct hid_report *report)
+static inline u32 hid_report_len(struct hid_report *report)
{
/* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
return ((report->size - 1) >> 3) + 1 + (report->id > 0);
}
-int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
+int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
int interrupt);
/* HID quirks API */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 55f950afb60d..a100946607a5 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -225,10 +225,14 @@ extern pgprot_t protection_map[16];
* ->fault function. The vma's ->fault is responsible for returning a bitmask
* of VM_FAULT_xxx flags that give details about how the fault was handled.
*
+ * MM layer fills up gfp_mask for page allocations but fault handler might
+ * alter it if its implementation requires a different allocation context.
+ *
* pgoff should be used in favour of virtual_address, if possible.
*/
struct vm_fault {
unsigned int flags; /* FAULT_FLAG_xxx flags */
+ gfp_t gfp_mask; /* gfp mask to be used for allocations */
pgoff_t pgoff; /* Logical page offset based on vma */
void __user *virtual_address; /* Faulting virtual address */
diff --git a/include/linux/tty.h b/include/linux/tty.h
index a1042afff99a..d67ceb3f5958 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -342,6 +342,7 @@ struct tty_file_private {
#define TTY_PTY_LOCK 16 /* pty private */
#define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */
#define TTY_HUPPED 18 /* Post driver->hangup() */
+#define TTY_HUPPING 19 /* Hangup in progress */
#define TTY_LDISC_HALTED 22 /* Line discipline is halted */
#define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
diff --git a/include/net/slhc_vj.h b/include/net/slhc_vj.h
index 8716d5942b65..8fcf8908a694 100644
--- a/include/net/slhc_vj.h
+++ b/include/net/slhc_vj.h
@@ -127,6 +127,7 @@ typedef __u32 int32;
*/
struct cstate {
byte_t cs_this; /* connection id number (xmit) */
+ bool initialized; /* true if initialized */
struct cstate *next; /* next in ring (xmit) */
struct iphdr cs_ip; /* ip/tcp hdr from most recent packet */
struct tcphdr cs_tcp;
diff --git a/include/sound/pcm_oss.h b/include/sound/pcm_oss.h
index 760c969d885d..12bbf8c81112 100644
--- a/include/sound/pcm_oss.h
+++ b/include/sound/pcm_oss.h
@@ -57,6 +57,7 @@ struct snd_pcm_oss_runtime {
char *buffer; /* vmallocated period */
size_t buffer_used; /* used length from period buffer */
struct mutex params_lock;
+ atomic_t rw_ref; /* concurrent read/write accesses */
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
struct snd_pcm_plugin *plugin_first;
struct snd_pcm_plugin *plugin_last;
diff --git a/ipc/shm.c b/ipc/shm.c
index 4982a4e7f009..a492dd81cf56 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -198,6 +198,12 @@ static int __shm_open(struct vm_area_struct *vma)
if (IS_ERR(shp))
return PTR_ERR(shp);
+ if (shp->shm_file != sfd->file) {
+ /* ID was reused */
+ shm_unlock(shp);
+ return -EINVAL;
+ }
+
shp->shm_atim = get_seconds();
shp->shm_lprid = task_tgid_vnr(current);
shp->shm_nattch++;
@@ -414,8 +420,9 @@ static int shm_mmap(struct file *file, struct vm_area_struct *vma)
int ret;
/*
- * In case of remap_file_pages() emulation, the file can represent
- * removed IPC ID: propogate shm_lock() error to caller.
+ * In case of remap_file_pages() emulation, the file can represent an
+ * IPC ID that was removed, and possibly even reused by another shm
+ * segment already. Propagate this case as an error to caller.
*/
ret =__shm_open(vma);
if (ret)
@@ -439,6 +446,7 @@ static int shm_release(struct inode *ino, struct file *file)
struct shm_file_data *sfd = shm_file_data(file);
put_ipc_ns(sfd->ns);
+ fput(sfd->file);
shm_file_data(file) = NULL;
kfree(sfd);
return 0;
@@ -1198,7 +1206,16 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg,
file->f_mapping = shp->shm_file->f_mapping;
sfd->id = shp->shm_perm.id;
sfd->ns = get_ipc_ns(ns);
- sfd->file = shp->shm_file;
+ /*
+ * We need to take a reference to the real shm file to prevent the
+ * pointer from becoming stale in cases where the lifetime of the outer
+ * file extends beyond that of the shm segment. It's not usually
+ * possible, but it can happen during remap_file_pages() emulation as
+ * that unmaps the memory, then does ->mmap() via file reference only.
+ * We'll deny the ->mmap() if the shm segment was since removed, but to
+ * detect shm ID reuse we need to compare the file pointers.
+ */
+ sfd->file = get_file(shp->shm_file);
sfd->vm_ops = NULL;
err = security_mmap_file(file, prot, flags);
diff --git a/kernel/resource.c b/kernel/resource.c
index a4a94e700fb9..41718cd8cab5 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -611,7 +611,8 @@ static int __find_resource(struct resource *root, struct resource *old,
alloc.start = constraint->alignf(constraint->alignf_data, &avail,
size, constraint->align);
alloc.end = alloc.start + size - 1;
- if (resource_contains(&avail, &alloc)) {
+ if (alloc.start <= alloc.end &&
+ resource_contains(&avail, &alloc)) {
new->start = alloc.start;
new->end = alloc.end;
return 0;
diff --git a/lib/Makefile b/lib/Makefile
index 7f1de26613d2..cb4f6aa95013 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -58,8 +58,6 @@ obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
-GCOV_PROFILE_hweight.o := n
-CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS))
obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
obj-$(CONFIG_BTREE) += btree.o
diff --git a/lib/hweight.c b/lib/hweight.c
index 9a5c1f221558..43273a7d83cf 100644
--- a/lib/hweight.c
+++ b/lib/hweight.c
@@ -9,6 +9,7 @@
* The Hamming Weight of a number is the total number of bits set in it.
*/
+#ifndef __HAVE_ARCH_SW_HWEIGHT
unsigned int __sw_hweight32(unsigned int w)
{
#ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER
@@ -25,6 +26,7 @@ unsigned int __sw_hweight32(unsigned int w)
#endif
}
EXPORT_SYMBOL(__sw_hweight32);
+#endif
unsigned int __sw_hweight16(unsigned int w)
{
@@ -43,6 +45,7 @@ unsigned int __sw_hweight8(unsigned int w)
}
EXPORT_SYMBOL(__sw_hweight8);
+#ifndef __HAVE_ARCH_SW_HWEIGHT
unsigned long __sw_hweight64(__u64 w)
{
#if BITS_PER_LONG == 32
@@ -65,3 +68,4 @@ unsigned long __sw_hweight64(__u64 w)
#endif
}
EXPORT_SYMBOL(__sw_hweight64);
+#endif
diff --git a/mm/filemap.c b/mm/filemap.c
index 69f75c77c098..b15f1d8bba43 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -571,7 +571,7 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
VM_BUG_ON_PAGE(!PageLocked(new), new);
VM_BUG_ON_PAGE(new->mapping, new);
- error = radix_tree_preload(gfp_mask & ~__GFP_HIGHMEM);
+ error = radix_tree_preload(gfp_mask & GFP_RECLAIM_MASK);
if (!error) {
struct address_space *mapping = old->mapping;
void (*freepage)(struct page *);
@@ -630,7 +630,7 @@ static int __add_to_page_cache_locked(struct page *page,
return error;
}
- error = radix_tree_maybe_preload(gfp_mask & ~__GFP_HIGHMEM);
+ error = radix_tree_maybe_preload(gfp_mask & GFP_RECLAIM_MASK);
if (error) {
if (!huge)
mem_cgroup_cancel_charge(page, memcg);
@@ -1192,8 +1192,7 @@ no_page:
if (fgp_flags & FGP_ACCESSED)
__SetPageReferenced(page);
- err = add_to_page_cache_lru(page, mapping, offset,
- gfp_mask & GFP_RECLAIM_MASK);
+ err = add_to_page_cache_lru(page, mapping, offset, gfp_mask);
if (unlikely(err)) {
page_cache_release(page);
page = NULL;
@@ -1827,19 +1826,18 @@ EXPORT_SYMBOL(generic_file_read_iter);
* This adds the requested page to the page cache if it isn't already there,
* and schedules an I/O to read in its contents from disk.
*/
-static int page_cache_read(struct file *file, pgoff_t offset)
+static int page_cache_read(struct file *file, pgoff_t offset, gfp_t gfp_mask)
{
struct address_space *mapping = file->f_mapping;
struct page *page;
int ret;
do {
- page = page_cache_alloc_cold(mapping);
+ page = __page_cache_alloc(gfp_mask|__GFP_COLD);
if (!page)
return -ENOMEM;
- ret = add_to_page_cache_lru(page, mapping, offset,
- mapping_gfp_constraint(mapping, GFP_KERNEL));
+ ret = add_to_page_cache_lru(page, mapping, offset, gfp_mask);
if (ret == 0)
ret = mapping->a_ops->readpage(file, page);
else if (ret == -EEXIST)
@@ -2020,7 +2018,7 @@ no_cached_page:
* We're only likely to ever get here if MADV_RANDOM is in
* effect.
*/
- error = page_cache_read(file, offset);
+ error = page_cache_read(file, offset, vmf->gfp_mask);
/*
* The page we want has now been added to the page cache.
diff --git a/mm/memory.c b/mm/memory.c
index 31ca97f7ebbc..177cb7d111a9 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1990,6 +1990,20 @@ static inline void cow_user_page(struct page *dst, struct page *src, unsigned lo
copy_user_highpage(dst, src, va, vma);
}
+static gfp_t __get_fault_gfp_mask(struct vm_area_struct *vma)
+{
+ struct file *vm_file = vma->vm_file;
+
+ if (vm_file)
+ return mapping_gfp_mask(vm_file->f_mapping) | __GFP_FS | __GFP_IO;
+
+ /*
+ * Special mappings (e.g. VDSO) do not have any file so fake
+ * a default GFP_KERNEL for them.
+ */
+ return GFP_KERNEL;
+}
+
/*
* Notify the address space that the page is about to become writable so that
* it can prohibit this or wait for the page to get into an appropriate state.
@@ -2005,6 +2019,7 @@ static int do_page_mkwrite(struct vm_area_struct *vma, struct page *page,
vmf.virtual_address = (void __user *)(address & PAGE_MASK);
vmf.pgoff = page->index;
vmf.flags = FAULT_FLAG_WRITE|FAULT_FLAG_MKWRITE;
+ vmf.gfp_mask = __get_fault_gfp_mask(vma);
vmf.page = page;
vmf.cow_page = NULL;
@@ -2770,6 +2785,7 @@ static int __do_fault(struct vm_area_struct *vma, unsigned long address,
vmf.pgoff = pgoff;
vmf.flags = flags;
vmf.page = NULL;
+ vmf.gfp_mask = __get_fault_gfp_mask(vma);
vmf.cow_page = cow_page;
ret = vma->vm_ops->fault(vma, &vmf);
@@ -2936,6 +2952,7 @@ static void do_fault_around(struct vm_area_struct *vma, unsigned long address,
vmf.pgoff = pgoff;
vmf.max_pgoff = max_pgoff;
vmf.flags = flags;
+ vmf.gfp_mask = __get_fault_gfp_mask(vma);
vma->vm_ops->map_pages(vma, &vmf);
}
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 6d0dbde4503b..3309dbda7ffa 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2510,13 +2510,13 @@ void account_page_redirty(struct page *page)
if (mapping && mapping_cap_account_dirty(mapping)) {
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
- bool locked;
+ struct wb_lock_cookie cookie = {};
- wb = unlocked_inode_to_wb_begin(inode, &locked);
+ wb = unlocked_inode_to_wb_begin(inode, &cookie);
current->nr_dirtied--;
dec_zone_page_state(page, NR_DIRTIED);
dec_wb_stat(wb, WB_DIRTIED);
- unlocked_inode_to_wb_end(inode, locked);
+ unlocked_inode_to_wb_end(inode, &cookie);
}
}
EXPORT_SYMBOL(account_page_redirty);
@@ -2622,15 +2622,15 @@ void cancel_dirty_page(struct page *page)
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct mem_cgroup *memcg;
- bool locked;
+ struct wb_lock_cookie cookie = {};
memcg = mem_cgroup_begin_page_stat(page);
- wb = unlocked_inode_to_wb_begin(inode, &locked);
+ wb = unlocked_inode_to_wb_begin(inode, &cookie);
if (TestClearPageDirty(page))
account_page_cleaned(page, mapping, memcg, wb);
- unlocked_inode_to_wb_end(inode, locked);
+ unlocked_inode_to_wb_end(inode, &cookie);
mem_cgroup_end_page_stat(memcg);
} else {
ClearPageDirty(page);
@@ -2663,7 +2663,7 @@ int clear_page_dirty_for_io(struct page *page)
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct mem_cgroup *memcg;
- bool locked;
+ struct wb_lock_cookie cookie = {};
/*
* Yes, Virginia, this is indeed insane.
@@ -2701,14 +2701,14 @@ int clear_page_dirty_for_io(struct page *page)
* exclusion.
*/
memcg = mem_cgroup_begin_page_stat(page);
- wb = unlocked_inode_to_wb_begin(inode, &locked);
+ wb = unlocked_inode_to_wb_begin(inode, &cookie);
if (TestClearPageDirty(page)) {
mem_cgroup_dec_page_stat(memcg, MEM_CGROUP_STAT_DIRTY);
dec_zone_page_state(page, NR_FILE_DIRTY);
dec_wb_stat(wb, WB_RECLAIMABLE);
ret = 1;
}
- unlocked_inode_to_wb_end(inode, locked);
+ unlocked_inode_to_wb_end(inode, &cookie);
mem_cgroup_end_page_stat(memcg);
return ret;
}
diff --git a/mm/slab.c b/mm/slab.c
index 4765c97ce690..fa49c01225a7 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3915,7 +3915,8 @@ next:
next_reap_node();
out:
/* Set up the next iteration */
- schedule_delayed_work(work, round_jiffies_relative(REAPTIMEOUT_AC));
+ schedule_delayed_work_on(smp_processor_id(), work,
+ round_jiffies_relative(REAPTIMEOUT_AC));
}
#ifdef CONFIG_SLABINFO
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index d81186d34558..9103dd15511c 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -1375,6 +1375,7 @@ rpc_gssd_dummy_depopulate(struct dentry *pipe_dentry)
struct dentry *clnt_dir = pipe_dentry->d_parent;
struct dentry *gssd_dir = clnt_dir->d_parent;
+ dget(pipe_dentry);
__rpc_rmpipe(d_inode(clnt_dir), pipe_dentry);
__rpc_depopulate(clnt_dir, gssd_dummy_info_file, 0, 1);
__rpc_depopulate(gssd_dir, gssd_dummy_clnt_dir, 0, 1);
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 6cd8aec146f2..07feb35f1935 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -833,8 +833,25 @@ static int choose_rate(struct snd_pcm_substream *substream,
return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
}
-static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
- bool trylock)
+/* parameter locking: returns immediately if tried during streaming */
+static int lock_params(struct snd_pcm_runtime *runtime)
+{
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
+ if (atomic_read(&runtime->oss.rw_ref)) {
+ mutex_unlock(&runtime->oss.params_lock);
+ return -EBUSY;
+ }
+ return 0;
+}
+
+static void unlock_params(struct snd_pcm_runtime *runtime)
+{
+ mutex_unlock(&runtime->oss.params_lock);
+}
+
+/* call with params_lock held */
+static int snd_pcm_oss_change_params_locked(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_pcm_hw_params *params, *sparams;
@@ -848,12 +865,9 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
struct snd_mask sformat_mask;
struct snd_mask mask;
- if (trylock) {
- if (!(mutex_trylock(&runtime->oss.params_lock)))
- return -EAGAIN;
- } else if (mutex_lock_interruptible(&runtime->oss.params_lock))
- return -EINTR;
- sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
+ if (!runtime->oss.params)
+ return 0;
+ sw_params = kzalloc(sizeof(*sw_params), GFP_KERNEL);
params = kmalloc(sizeof(*params), GFP_KERNEL);
sparams = kmalloc(sizeof(*sparams), GFP_KERNEL);
if (!sw_params || !params || !sparams) {
@@ -991,7 +1005,6 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
goto failure;
}
- memset(sw_params, 0, sizeof(*sw_params));
if (runtime->oss.trigger) {
sw_params->start_threshold = 1;
} else {
@@ -1079,6 +1092,23 @@ failure:
kfree(sw_params);
kfree(params);
kfree(sparams);
+ return err;
+}
+
+/* this one takes the lock by itself */
+static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
+ bool trylock)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ if (trylock) {
+ if (!(mutex_trylock(&runtime->oss.params_lock)))
+ return -EAGAIN;
+ } else if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
+
+ err = snd_pcm_oss_change_params_locked(substream);
mutex_unlock(&runtime->oss.params_lock);
return err;
}
@@ -1107,6 +1137,10 @@ static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_fil
return 0;
}
+/* call with params_lock held */
+/* NOTE: this always call PREPARE unconditionally no matter whether
+ * runtime->oss.prepare is set or not
+ */
static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
{
int err;
@@ -1131,14 +1165,35 @@ static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime;
int err;
- if (substream == NULL)
- return 0;
runtime = substream->runtime;
if (runtime->oss.params) {
err = snd_pcm_oss_change_params(substream, false);
if (err < 0)
return err;
}
+ if (runtime->oss.prepare) {
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
+ err = snd_pcm_oss_prepare(substream);
+ mutex_unlock(&runtime->oss.params_lock);
+ if (err < 0)
+ return err;
+ }
+ return 0;
+}
+
+/* call with params_lock held */
+static int snd_pcm_oss_make_ready_locked(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime;
+ int err;
+
+ runtime = substream->runtime;
+ if (runtime->oss.params) {
+ err = snd_pcm_oss_change_params_locked(substream);
+ if (err < 0)
+ return err;
+ }
if (runtime->oss.prepare) {
err = snd_pcm_oss_prepare(substream);
if (err < 0)
@@ -1367,13 +1422,15 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
if (atomic_read(&substream->mmap_count))
return -ENXIO;
- if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
- return tmp;
+ atomic_inc(&runtime->oss.rw_ref);
while (bytes > 0) {
if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
tmp = -ERESTARTSYS;
break;
}
+ tmp = snd_pcm_oss_make_ready_locked(substream);
+ if (tmp < 0)
+ goto err;
if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
tmp = bytes;
if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
@@ -1429,6 +1486,7 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
}
tmp = 0;
}
+ atomic_dec(&runtime->oss.rw_ref);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
}
@@ -1474,13 +1532,15 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
if (atomic_read(&substream->mmap_count))
return -ENXIO;
- if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
- return tmp;
+ atomic_inc(&runtime->oss.rw_ref);
while (bytes > 0) {
if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
tmp = -ERESTARTSYS;
break;
}
+ tmp = snd_pcm_oss_make_ready_locked(substream);
+ if (tmp < 0)
+ goto err;
if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
if (runtime->oss.buffer_used == 0) {
tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
@@ -1521,6 +1581,7 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
}
tmp = 0;
}
+ atomic_dec(&runtime->oss.rw_ref);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
}
@@ -1536,10 +1597,12 @@ static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
continue;
runtime = substream->runtime;
snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
+ mutex_lock(&runtime->oss.params_lock);
runtime->oss.prepare = 1;
runtime->oss.buffer_used = 0;
runtime->oss.prev_hw_ptr_period = 0;
runtime->oss.period_ptr = 0;
+ mutex_unlock(&runtime->oss.params_lock);
}
return 0;
}
@@ -1625,9 +1688,13 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
goto __direct;
if ((err = snd_pcm_oss_make_ready(substream)) < 0)
return err;
+ atomic_inc(&runtime->oss.rw_ref);
+ if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
+ atomic_dec(&runtime->oss.rw_ref);
+ return -ERESTARTSYS;
+ }
format = snd_pcm_oss_format_from(runtime->oss.format);
width = snd_pcm_format_physical_width(format);
- mutex_lock(&runtime->oss.params_lock);
if (runtime->oss.buffer_used > 0) {
#ifdef OSS_DEBUG
pcm_dbg(substream->pcm, "sync: buffer_used\n");
@@ -1637,10 +1704,8 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
runtime->oss.buffer + runtime->oss.buffer_used,
size);
err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes);
- if (err < 0) {
- mutex_unlock(&runtime->oss.params_lock);
- return err;
- }
+ if (err < 0)
+ goto unlock;
} else if (runtime->oss.period_ptr > 0) {
#ifdef OSS_DEBUG
pcm_dbg(substream->pcm, "sync: period_ptr\n");
@@ -1650,10 +1715,8 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
runtime->oss.buffer,
size * 8 / width);
err = snd_pcm_oss_sync1(substream, size);
- if (err < 0) {
- mutex_unlock(&runtime->oss.params_lock);
- return err;
- }
+ if (err < 0)
+ goto unlock;
}
/*
* The ALSA's period might be a bit large than OSS one.
@@ -1684,7 +1747,11 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
snd_pcm_lib_writev(substream, buffers, size);
}
}
+unlock:
mutex_unlock(&runtime->oss.params_lock);
+ atomic_dec(&runtime->oss.rw_ref);
+ if (err < 0)
+ return err;
/*
* finish sync: drain the buffer
*/
@@ -1695,7 +1762,9 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
substream->f_flags = saved_f_flags;
if (err < 0)
return err;
+ mutex_lock(&runtime->oss.params_lock);
runtime->oss.prepare = 1;
+ mutex_unlock(&runtime->oss.params_lock);
}
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
@@ -1706,8 +1775,10 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
if (err < 0)
return err;
+ mutex_lock(&runtime->oss.params_lock);
runtime->oss.buffer_used = 0;
runtime->oss.prepare = 1;
+ mutex_unlock(&runtime->oss.params_lock);
}
return 0;
}
@@ -1719,6 +1790,8 @@ static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
struct snd_pcm_runtime *runtime;
+ int err;
+
if (substream == NULL)
continue;
runtime = substream->runtime;
@@ -1726,10 +1799,14 @@ static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
rate = 1000;
else if (rate > 192000)
rate = 192000;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
if (runtime->oss.rate != rate) {
runtime->oss.params = 1;
runtime->oss.rate = rate;
}
+ unlock_params(runtime);
}
return snd_pcm_oss_get_rate(pcm_oss_file);
}
@@ -1754,13 +1831,19 @@ static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsig
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
struct snd_pcm_runtime *runtime;
+ int err;
+
if (substream == NULL)
continue;
runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
if (runtime->oss.channels != channels) {
runtime->oss.params = 1;
runtime->oss.channels = channels;
}
+ unlock_params(runtime);
}
return snd_pcm_oss_get_channels(pcm_oss_file);
}
@@ -1833,6 +1916,7 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
{
int formats, idx;
+ int err;
if (format != AFMT_QUERY) {
formats = snd_pcm_oss_get_formats(pcm_oss_file);
@@ -1846,10 +1930,14 @@ static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int for
if (substream == NULL)
continue;
runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
if (runtime->oss.format != format) {
runtime->oss.params = 1;
runtime->oss.format = format;
}
+ unlock_params(runtime);
}
}
return snd_pcm_oss_get_format(pcm_oss_file);
@@ -1869,8 +1957,6 @@ static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int s
{
struct snd_pcm_runtime *runtime;
- if (substream == NULL)
- return 0;
runtime = substream->runtime;
if (subdivide == 0) {
subdivide = runtime->oss.subdivision;
@@ -1894,9 +1980,17 @@ static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+ struct snd_pcm_runtime *runtime;
+
if (substream == NULL)
continue;
- if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
+ runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
+ err = snd_pcm_oss_set_subdivide1(substream, subdivide);
+ unlock_params(runtime);
+ if (err < 0)
return err;
}
return err;
@@ -1906,8 +2000,6 @@ static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsign
{
struct snd_pcm_runtime *runtime;
- if (substream == NULL)
- return 0;
runtime = substream->runtime;
if (runtime->oss.subdivision || runtime->oss.fragshift)
return -EINVAL;
@@ -1927,9 +2019,17 @@ static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsig
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+ struct snd_pcm_runtime *runtime;
+
if (substream == NULL)
continue;
- if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
+ runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
+ err = snd_pcm_oss_set_fragment1(substream, val);
+ unlock_params(runtime);
+ if (err < 0)
return err;
}
return err;
@@ -2013,6 +2113,9 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
}
if (psubstream) {
runtime = psubstream->runtime;
+ cmd = 0;
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
if (trigger & PCM_ENABLE_OUTPUT) {
if (runtime->oss.trigger)
goto _skip1;
@@ -2030,13 +2133,19 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
cmd = SNDRV_PCM_IOCTL_DROP;
runtime->oss.prepare = 1;
}
- err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
- if (err < 0)
- return err;
- }
_skip1:
+ mutex_unlock(&runtime->oss.params_lock);
+ if (cmd) {
+ err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
+ if (err < 0)
+ return err;
+ }
+ }
if (csubstream) {
runtime = csubstream->runtime;
+ cmd = 0;
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
if (trigger & PCM_ENABLE_INPUT) {
if (runtime->oss.trigger)
goto _skip2;
@@ -2051,11 +2160,14 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
cmd = SNDRV_PCM_IOCTL_DROP;
runtime->oss.prepare = 1;
}
- err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
- if (err < 0)
- return err;
- }
_skip2:
+ mutex_unlock(&runtime->oss.params_lock);
+ if (cmd) {
+ err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
+ if (err < 0)
+ return err;
+ }
+ }
return 0;
}
@@ -2307,6 +2419,7 @@ static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
runtime->oss.maxfrags = 0;
runtime->oss.subdivision = 0;
substream->pcm_release = snd_pcm_oss_release_substream;
+ atomic_set(&runtime->oss.rw_ref, 0);
}
static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 074363b63cc4..6bda8f6c5f84 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -28,6 +28,7 @@
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/pcm.h>
+#include <sound/timer.h>
#include <sound/control.h>
#include <sound/info.h>
@@ -1025,8 +1026,13 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream)
snd_free_pages((void*)runtime->control,
PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)));
kfree(runtime->hw_constraints.rules);
- kfree(runtime);
+ /* Avoid concurrent access to runtime via PCM timer interface */
+ if (substream->timer)
+ spin_lock_irq(&substream->timer->lock);
substream->runtime = NULL;
+ if (substream->timer)
+ spin_unlock_irq(&substream->timer->lock);
+ kfree(runtime);
put_pid(substream->pid);
substream->pid = NULL;
substream->pstr->substream_opened--;
diff --git a/sound/core/rawmidi_compat.c b/sound/core/rawmidi_compat.c
index 09a89094dcf7..4e304a24924a 100644
--- a/sound/core/rawmidi_compat.c
+++ b/sound/core/rawmidi_compat.c
@@ -36,8 +36,6 @@ static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
struct snd_rawmidi_params params;
unsigned int val;
- if (rfile->output == NULL)
- return -EINVAL;
if (get_user(params.stream, &src->stream) ||
get_user(params.buffer_size, &src->buffer_size) ||
get_user(params.avail_min, &src->avail_min) ||
@@ -46,8 +44,12 @@ static int snd_rawmidi_ioctl_params_compat(struct snd_rawmidi_file *rfile,
params.no_active_sensing = val;
switch (params.stream) {
case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ if (!rfile->output)
+ return -EINVAL;
return snd_rawmidi_output_params(rfile->output, ¶ms);
case SNDRV_RAWMIDI_STREAM_INPUT:
+ if (!rfile->input)
+ return -EINVAL;
return snd_rawmidi_input_params(rfile->input, ¶ms);
}
return -EINVAL;
@@ -67,16 +69,18 @@ static int snd_rawmidi_ioctl_status_compat(struct snd_rawmidi_file *rfile,
int err;
struct snd_rawmidi_status status;
- if (rfile->output == NULL)
- return -EINVAL;
if (get_user(status.stream, &src->stream))
return -EFAULT;
switch (status.stream) {
case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ if (!rfile->output)
+ return -EINVAL;
err = snd_rawmidi_output_status(rfile->output, &status);
break;
case SNDRV_RAWMIDI_STREAM_INPUT:
+ if (!rfile->input)
+ return -EINVAL;
err = snd_rawmidi_input_status(rfile->input, &status);
break;
default:
@@ -113,16 +117,18 @@ static int snd_rawmidi_ioctl_status_x32(struct snd_rawmidi_file *rfile,
int err;
struct snd_rawmidi_status status;
- if (rfile->output == NULL)
- return -EINVAL;
if (get_user(status.stream, &src->stream))
return -EFAULT;
switch (status.stream) {
case SNDRV_RAWMIDI_STREAM_OUTPUT:
+ if (!rfile->output)
+ return -EINVAL;
err = snd_rawmidi_output_status(rfile->output, &status);
break;
case SNDRV_RAWMIDI_STREAM_INPUT:
+ if (!rfile->input)
+ return -EINVAL;
err = snd_rawmidi_input_status(rfile->input, &status);
break;
default:
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index fbd00821e326..3be91696ac35 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1549,7 +1549,8 @@ static void azx_check_snoop_available(struct azx *chip)
*/
u8 val;
pci_read_config_byte(chip->pci, 0x42, &val);
- if (!(val & 0x80) && chip->pci->revision == 0x30)
+ if (!(val & 0x80) && (chip->pci->revision == 0x30 ||
+ chip->pci->revision == 0x20))
snoop = false;
}
diff --git a/sound/soc/codecs/ssm2602.c b/sound/soc/codecs/ssm2602.c
index 4452fea0b118..bd4998f577a0 100644
--- a/sound/soc/codecs/ssm2602.c
+++ b/sound/soc/codecs/ssm2602.c
@@ -54,10 +54,17 @@ struct ssm2602_priv {
* using 2 wire for device control, so we cache them instead.
* There is no point in caching the reset register
*/
-static const u16 ssm2602_reg[SSM2602_CACHEREGNUM] = {
- 0x0097, 0x0097, 0x0079, 0x0079,
- 0x000a, 0x0008, 0x009f, 0x000a,
- 0x0000, 0x0000
+static const struct reg_default ssm2602_reg[SSM2602_CACHEREGNUM] = {
+ { .reg = 0x00, .def = 0x0097 },
+ { .reg = 0x01, .def = 0x0097 },
+ { .reg = 0x02, .def = 0x0079 },
+ { .reg = 0x03, .def = 0x0079 },
+ { .reg = 0x04, .def = 0x000a },
+ { .reg = 0x05, .def = 0x0008 },
+ { .reg = 0x06, .def = 0x009f },
+ { .reg = 0x07, .def = 0x000a },
+ { .reg = 0x08, .def = 0x0000 },
+ { .reg = 0x09, .def = 0x0000 }
};
@@ -618,8 +625,8 @@ const struct regmap_config ssm2602_regmap_config = {
.volatile_reg = ssm2602_register_volatile,
.cache_type = REGCACHE_RBTREE,
- .reg_defaults_raw = ssm2602_reg,
- .num_reg_defaults_raw = ARRAY_SIZE(ssm2602_reg),
+ .reg_defaults = ssm2602_reg,
+ .num_reg_defaults = ARRAY_SIZE(ssm2602_reg),
};
EXPORT_SYMBOL_GPL(ssm2602_regmap_config);
diff --git a/sound/usb/line6/midi.c b/sound/usb/line6/midi.c
index cebea9b7f769..6a9be1df7851 100644
--- a/sound/usb/line6/midi.c
+++ b/sound/usb/line6/midi.c
@@ -125,7 +125,7 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data,
}
usb_fill_int_urb(urb, line6->usbdev,
- usb_sndbulkpipe(line6->usbdev,
+ usb_sndintpipe(line6->usbdev,
line6->properties->ep_ctrl_w),
transfer_buffer, length, midi_sent, line6,
line6->interval);
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index 6ea4fcfaab36..a767a6400c5c 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -182,8 +182,6 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
unsigned char buf2[BUFSZ];
size_t ret_len;
u64 objdump_addr;
- const char *objdump_name;
- char decomp_name[KMOD_DECOMP_LEN];
int ret;
pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr);
@@ -244,25 +242,9 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
state->done[state->done_cnt++] = al.map->start;
}
- objdump_name = al.map->dso->long_name;
- if (dso__needs_decompress(al.map->dso)) {
- if (dso__decompress_kmodule_path(al.map->dso, objdump_name,
- decomp_name,
- sizeof(decomp_name)) < 0) {
- pr_debug("decompression failed\n");
- return -1;
- }
-
- objdump_name = decomp_name;
- }
-
/* Read the object code using objdump */
objdump_addr = map__rip_2objdump(al.map, al.addr);
- ret = read_via_objdump(objdump_name, objdump_addr, buf2, len);
-
- if (dso__needs_decompress(al.map->dso))
- unlink(objdump_name);
-
+ ret = read_via_objdump(al.map->dso->long_name, objdump_addr, buf2, len);
if (ret > 0) {
/*
* The kernel maps are inaccurate - assume objdump is right in
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
index eeeae0629ad3..0b540b84f8b7 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -1270,6 +1270,7 @@ static int intel_pt_overflow(struct intel_pt_decoder *decoder)
intel_pt_clear_tx_flags(decoder);
decoder->have_tma = false;
decoder->cbr = 0;
+ decoder->timestamp_insn_cnt = 0;
decoder->pkt_state = INTEL_PT_STATE_ERR_RESYNC;
decoder->overflow = true;
return -EOVERFLOW;
@@ -1492,6 +1493,7 @@ static int intel_pt_walk_fup_tip(struct intel_pt_decoder *decoder)
case INTEL_PT_PSBEND:
intel_pt_log("ERROR: Missing TIP after FUP\n");
decoder->pkt_state = INTEL_PT_STATE_ERR3;
+ decoder->pkt_step = 0;
return -ENOENT;
case INTEL_PT_OVF:
@@ -2152,14 +2154,6 @@ const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder)
return &decoder->state;
}
-static bool intel_pt_at_psb(unsigned char *buf, size_t len)
-{
- if (len < INTEL_PT_PSB_LEN)
- return false;
- return memmem(buf, INTEL_PT_PSB_LEN, INTEL_PT_PSB_STR,
- INTEL_PT_PSB_LEN);
-}
-
/**
* intel_pt_next_psb - move buffer pointer to the start of the next PSB packet.
* @buf: pointer to buffer pointer
@@ -2248,6 +2242,7 @@ static unsigned char *intel_pt_last_psb(unsigned char *buf, size_t len)
* @buf: buffer
* @len: size of buffer
* @tsc: TSC value returned
+ * @rem: returns remaining size when TSC is found
*
* Find a TSC packet in @buf and return the TSC value. This function assumes
* that @buf starts at a PSB and that PSB+ will contain TSC and so stops if a
@@ -2255,7 +2250,8 @@ static unsigned char *intel_pt_last_psb(unsigned char *buf, size_t len)
*
* Return: %true if TSC is found, false otherwise.
*/
-static bool intel_pt_next_tsc(unsigned char *buf, size_t len, uint64_t *tsc)
+static bool intel_pt_next_tsc(unsigned char *buf, size_t len, uint64_t *tsc,
+ size_t *rem)
{
struct intel_pt_pkt packet;
int ret;
@@ -2266,6 +2262,7 @@ static bool intel_pt_next_tsc(unsigned char *buf, size_t len, uint64_t *tsc)
return false;
if (packet.type == INTEL_PT_TSC) {
*tsc = packet.payload;
+ *rem = len;
return true;
}
if (packet.type == INTEL_PT_PSBEND)
@@ -2316,6 +2313,8 @@ static int intel_pt_tsc_cmp(uint64_t tsc1, uint64_t tsc2)
* @len_a: size of first buffer
* @buf_b: second buffer
* @len_b: size of second buffer
+ * @consecutive: returns true if there is data in buf_b that is consecutive
+ * to buf_a
*
* If the trace contains TSC we can look at the last TSC of @buf_a and the
* first TSC of @buf_b in order to determine if the buffers overlap, and then
@@ -2328,33 +2327,41 @@ static int intel_pt_tsc_cmp(uint64_t tsc1, uint64_t tsc2)
static unsigned char *intel_pt_find_overlap_tsc(unsigned char *buf_a,
size_t len_a,
unsigned char *buf_b,
- size_t len_b)
+ size_t len_b, bool *consecutive)
{
uint64_t tsc_a, tsc_b;
unsigned char *p;
- size_t len;
+ size_t len, rem_a, rem_b;
p = intel_pt_last_psb(buf_a, len_a);
if (!p)
return buf_b; /* No PSB in buf_a => no overlap */
len = len_a - (p - buf_a);
- if (!intel_pt_next_tsc(p, len, &tsc_a)) {
+ if (!intel_pt_next_tsc(p, len, &tsc_a, &rem_a)) {
/* The last PSB+ in buf_a is incomplete, so go back one more */
len_a -= len;
p = intel_pt_last_psb(buf_a, len_a);
if (!p)
return buf_b; /* No full PSB+ => assume no overlap */
len = len_a - (p - buf_a);
- if (!intel_pt_next_tsc(p, len, &tsc_a))
+ if (!intel_pt_next_tsc(p, len, &tsc_a, &rem_a))
return buf_b; /* No TSC in buf_a => assume no overlap */
}
while (1) {
/* Ignore PSB+ with no TSC */
- if (intel_pt_next_tsc(buf_b, len_b, &tsc_b) &&
- intel_pt_tsc_cmp(tsc_a, tsc_b) < 0)
- return buf_b; /* tsc_a < tsc_b => no overlap */
+ if (intel_pt_next_tsc(buf_b, len_b, &tsc_b, &rem_b)) {
+ int cmp = intel_pt_tsc_cmp(tsc_a, tsc_b);
+
+ /* Same TSC, so buffers are consecutive */
+ if (!cmp && rem_b >= rem_a) {
+ *consecutive = true;
+ return buf_b + len_b - (rem_b - rem_a);
+ }
+ if (cmp < 0)
+ return buf_b; /* tsc_a < tsc_b => no overlap */
+ }
if (!intel_pt_step_psb(&buf_b, &len_b))
return buf_b + len_b; /* No PSB in buf_b => no data */
@@ -2368,6 +2375,8 @@ static unsigned char *intel_pt_find_overlap_tsc(unsigned char *buf_a,
* @buf_b: second buffer
* @len_b: size of second buffer
* @have_tsc: can use TSC packets to detect overlap
+ * @consecutive: returns true if there is data in buf_b that is consecutive
+ * to buf_a
*
* When trace samples or snapshots are recorded there is the possibility that
* the data overlaps. Note that, for the purposes of decoding, data is only
@@ -2378,7 +2387,7 @@ static unsigned char *intel_pt_find_overlap_tsc(unsigned char *buf_a,
*/
unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
unsigned char *buf_b, size_t len_b,
- bool have_tsc)
+ bool have_tsc, bool *consecutive)
{
unsigned char *found;
@@ -2390,7 +2399,8 @@ unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
return buf_b; /* No overlap */
if (have_tsc) {
- found = intel_pt_find_overlap_tsc(buf_a, len_a, buf_b, len_b);
+ found = intel_pt_find_overlap_tsc(buf_a, len_a, buf_b, len_b,
+ consecutive);
if (found)
return found;
}
@@ -2405,28 +2415,16 @@ unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
}
/* Now len_b >= len_a */
- if (len_b > len_a) {
- /* The leftover buffer 'b' must start at a PSB */
- while (!intel_pt_at_psb(buf_b + len_a, len_b - len_a)) {
- if (!intel_pt_step_psb(&buf_a, &len_a))
- return buf_b; /* No overlap */
- }
- }
-
while (1) {
/* Potential overlap so check the bytes */
found = memmem(buf_a, len_a, buf_b, len_a);
- if (found)
+ if (found) {
+ *consecutive = true;
return buf_b + len_a;
+ }
/* Try again at next PSB in buffer 'a' */
if (!intel_pt_step_psb(&buf_a, &len_a))
return buf_b; /* No overlap */
-
- /* The leftover buffer 'b' must start at a PSB */
- while (!intel_pt_at_psb(buf_b + len_a, len_b - len_a)) {
- if (!intel_pt_step_psb(&buf_a, &len_a))
- return buf_b; /* No overlap */
- }
}
}
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
index 02c38fec1c37..89a3eda6a318 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.h
@@ -102,7 +102,7 @@ const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder);
unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
unsigned char *buf_b, size_t len_b,
- bool have_tsc);
+ bool have_tsc, bool *consecutive);
int intel_pt__strerror(int code, char *buf, size_t buflen);
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 89927b5beebf..3693cb26ec66 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -125,6 +125,7 @@ struct intel_pt_queue {
bool stop;
bool step_through_buffers;
bool use_buffer_pid_tid;
+ bool sync_switch;
pid_t pid, tid;
int cpu;
int switch_state;
@@ -188,14 +189,17 @@ static void intel_pt_dump_event(struct intel_pt *pt, unsigned char *buf,
static int intel_pt_do_fix_overlap(struct intel_pt *pt, struct auxtrace_buffer *a,
struct auxtrace_buffer *b)
{
+ bool consecutive = false;
void *start;
start = intel_pt_find_overlap(a->data, a->size, b->data, b->size,
- pt->have_tsc);
+ pt->have_tsc, &consecutive);
if (!start)
return -EINVAL;
b->use_size = b->data + b->size - start;
b->use_data = start;
+ if (b->use_size && consecutive)
+ b->consecutive = true;
return 0;
}
@@ -849,10 +853,12 @@ static int intel_pt_setup_queue(struct intel_pt *pt,
if (pt->timeless_decoding || !pt->have_sched_switch)
ptq->use_buffer_pid_tid = true;
}
+
+ ptq->sync_switch = pt->sync_switch;
}
if (!ptq->on_heap &&
- (!pt->sync_switch ||
+ (!ptq->sync_switch ||
ptq->switch_state != INTEL_PT_SS_EXPECTING_SWITCH_EVENT)) {
const struct intel_pt_state *state;
int ret;
@@ -1235,7 +1241,7 @@ static int intel_pt_sample(struct intel_pt_queue *ptq)
if (pt->synth_opts.last_branch)
intel_pt_update_last_branch_rb(ptq);
- if (!pt->sync_switch)
+ if (!ptq->sync_switch)
return 0;
if (intel_pt_is_switch_ip(ptq, state->to_ip)) {
@@ -1316,6 +1322,21 @@ static u64 intel_pt_switch_ip(struct intel_pt *pt, u64 *ptss_ip)
return switch_ip;
}
+static void intel_pt_enable_sync_switch(struct intel_pt *pt)
+{
+ unsigned int i;
+
+ pt->sync_switch = true;
+
+ for (i = 0; i < pt->queues.nr_queues; i++) {
+ struct auxtrace_queue *queue = &pt->queues.queue_array[i];
+ struct intel_pt_queue *ptq = queue->priv;
+
+ if (ptq)
+ ptq->sync_switch = true;
+ }
+}
+
static int intel_pt_run_decoder(struct intel_pt_queue *ptq, u64 *timestamp)
{
const struct intel_pt_state *state = ptq->state;
@@ -1332,7 +1353,7 @@ static int intel_pt_run_decoder(struct intel_pt_queue *ptq, u64 *timestamp)
if (pt->switch_ip) {
intel_pt_log("switch_ip: %"PRIx64" ptss_ip: %"PRIx64"\n",
pt->switch_ip, pt->ptss_ip);
- pt->sync_switch = true;
+ intel_pt_enable_sync_switch(pt);
}
}
}
@@ -1348,9 +1369,9 @@ static int intel_pt_run_decoder(struct intel_pt_queue *ptq, u64 *timestamp)
if (state->err) {
if (state->err == INTEL_PT_ERR_NODATA)
return 1;
- if (pt->sync_switch &&
+ if (ptq->sync_switch &&
state->from_ip >= pt->kernel_start) {
- pt->sync_switch = false;
+ ptq->sync_switch = false;
intel_pt_next_tid(pt, ptq);
}
if (pt->synth_opts.errors) {
@@ -1376,7 +1397,7 @@ static int intel_pt_run_decoder(struct intel_pt_queue *ptq, u64 *timestamp)
state->timestamp, state->est_timestamp);
ptq->timestamp = state->est_timestamp;
/* Use estimated TSC in unknown switch state */
- } else if (pt->sync_switch &&
+ } else if (ptq->sync_switch &&
ptq->switch_state == INTEL_PT_SS_UNKNOWN &&
intel_pt_is_switch_ip(ptq, state->to_ip) &&
ptq->next_tid == -1) {
@@ -1523,7 +1544,7 @@ static int intel_pt_sync_switch(struct intel_pt *pt, int cpu, pid_t tid,
return 1;
ptq = intel_pt_cpu_to_ptq(pt, cpu);
- if (!ptq)
+ if (!ptq || !ptq->sync_switch)
return 1;
switch (ptq->switch_state) {
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