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Open Source and information security mailing list archives
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Date: Wed, 21 Mar 2018 14:21:04 +0100
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 4.14.29
diff --git a/Makefile b/Makefile
index 9ae370a47ff9..4b2aa0dd4043 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 14
-SUBLEVEL = 28
+SUBLEVEL = 29
EXTRAVERSION =
NAME = Petit Gorille
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 79089778725b..e3b45546d589 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -543,7 +543,8 @@ void flush_cache_mm(struct mm_struct *mm)
rp3440, etc. So, avoid it if the mm isn't too big. */
if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
mm_total_size(mm) >= parisc_cache_flush_threshold) {
- flush_tlb_all();
+ if (mm->context)
+ flush_tlb_all();
flush_cache_all();
return;
}
@@ -571,6 +572,8 @@ void flush_cache_mm(struct mm_struct *mm)
pfn = pte_pfn(*ptep);
if (!pfn_valid(pfn))
continue;
+ if (unlikely(mm->context))
+ flush_tlb_page(vma, addr);
__flush_cache_page(vma, addr, PFN_PHYS(pfn));
}
}
@@ -579,26 +582,46 @@ void flush_cache_mm(struct mm_struct *mm)
void flush_cache_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
+ pgd_t *pgd;
+ unsigned long addr;
+
if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) &&
end - start >= parisc_cache_flush_threshold) {
- flush_tlb_range(vma, start, end);
+ if (vma->vm_mm->context)
+ flush_tlb_range(vma, start, end);
flush_cache_all();
return;
}
- flush_user_dcache_range_asm(start, end);
- if (vma->vm_flags & VM_EXEC)
- flush_user_icache_range_asm(start, end);
- flush_tlb_range(vma, start, end);
+ if (vma->vm_mm->context == mfsp(3)) {
+ flush_user_dcache_range_asm(start, end);
+ if (vma->vm_flags & VM_EXEC)
+ flush_user_icache_range_asm(start, end);
+ flush_tlb_range(vma, start, end);
+ return;
+ }
+
+ pgd = vma->vm_mm->pgd;
+ for (addr = vma->vm_start; addr < vma->vm_end; addr += PAGE_SIZE) {
+ unsigned long pfn;
+ pte_t *ptep = get_ptep(pgd, addr);
+ if (!ptep)
+ continue;
+ pfn = pte_pfn(*ptep);
+ if (pfn_valid(pfn)) {
+ if (unlikely(vma->vm_mm->context))
+ flush_tlb_page(vma, addr);
+ __flush_cache_page(vma, addr, PFN_PHYS(pfn));
+ }
+ }
}
void
flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn)
{
- BUG_ON(!vma->vm_mm->context);
-
if (pfn_valid(pfn)) {
- flush_tlb_page(vma, vmaddr);
+ if (likely(vma->vm_mm->context))
+ flush_tlb_page(vma, vmaddr);
__flush_cache_page(vma, vmaddr, PFN_PHYS(pfn));
}
}
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 66c14347c502..23a65439c37c 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -314,6 +314,7 @@
#define X86_FEATURE_VPCLMULQDQ (16*32+10) /* Carry-Less Multiplication Double Quadword */
#define X86_FEATURE_AVX512_VNNI (16*32+11) /* Vector Neural Network Instructions */
#define X86_FEATURE_AVX512_BITALG (16*32+12) /* Support for VPOPCNT[B,W] and VPSHUF-BITQMB instructions */
+#define X86_FEATURE_TME (16*32+13) /* Intel Total Memory Encryption */
#define X86_FEATURE_AVX512_VPOPCNTDQ (16*32+14) /* POPCNT for vectors of DW/QW */
#define X86_FEATURE_LA57 (16*32+16) /* 5-level page tables */
#define X86_FEATURE_RDPID (16*32+22) /* RDPID instruction */
@@ -326,6 +327,7 @@
/* Intel-defined CPU features, CPUID level 0x00000007:0 (EDX), word 18 */
#define X86_FEATURE_AVX512_4VNNIW (18*32+ 2) /* AVX-512 Neural Network Instructions */
#define X86_FEATURE_AVX512_4FMAPS (18*32+ 3) /* AVX-512 Multiply Accumulation Single precision */
+#define X86_FEATURE_PCONFIG (18*32+18) /* Intel PCONFIG */
#define X86_FEATURE_SPEC_CTRL (18*32+26) /* "" Speculation Control (IBRS + IBPB) */
#define X86_FEATURE_INTEL_STIBP (18*32+27) /* "" Single Thread Indirect Branch Predictors */
#define X86_FEATURE_ARCH_CAPABILITIES (18*32+29) /* IA32_ARCH_CAPABILITIES MSR (Intel) */
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index d0dabeae0505..f928ad9b143f 100644
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -183,7 +183,10 @@
* otherwise we'll run out of registers. We don't care about CET
* here, anyway.
*/
-# define CALL_NOSPEC ALTERNATIVE("call *%[thunk_target]\n", \
+# define CALL_NOSPEC \
+ ALTERNATIVE( \
+ ANNOTATE_RETPOLINE_SAFE \
+ "call *%[thunk_target]\n", \
" jmp 904f;\n" \
" .align 16\n" \
"901: call 903f;\n" \
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 4aa9fd379390..c3af167d0a70 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -105,7 +105,7 @@ static void probe_xeon_phi_r3mwait(struct cpuinfo_x86 *c)
/*
* Early microcode releases for the Spectre v2 mitigation were broken.
* Information taken from;
- * - https://newsroom.intel.com/wp-content/uploads/sites/11/2018/01/microcode-update-guidance.pdf
+ * - https://newsroom.intel.com/wp-content/uploads/sites/11/2018/03/microcode-update-guidance.pdf
* - https://kb.vmware.com/s/article/52345
* - Microcode revisions observed in the wild
* - Release note from 20180108 microcode release
@@ -123,7 +123,6 @@ static const struct sku_microcode spectre_bad_microcodes[] = {
{ INTEL_FAM6_KABYLAKE_MOBILE, 0x09, 0x80 },
{ INTEL_FAM6_SKYLAKE_X, 0x03, 0x0100013e },
{ INTEL_FAM6_SKYLAKE_X, 0x04, 0x0200003c },
- { INTEL_FAM6_SKYLAKE_DESKTOP, 0x03, 0xc2 },
{ INTEL_FAM6_BROADWELL_CORE, 0x04, 0x28 },
{ INTEL_FAM6_BROADWELL_GT3E, 0x01, 0x1b },
{ INTEL_FAM6_BROADWELL_XEON_D, 0x02, 0x14 },
diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
index 5edb27f1a2c4..9d0b5af7db91 100644
--- a/arch/x86/kernel/vm86_32.c
+++ b/arch/x86/kernel/vm86_32.c
@@ -727,7 +727,8 @@ void handle_vm86_fault(struct kernel_vm86_regs *regs, long error_code)
return;
check_vip:
- if (VEFLAGS & X86_EFLAGS_VIP) {
+ if ((VEFLAGS & (X86_EFLAGS_VIP | X86_EFLAGS_VIF)) ==
+ (X86_EFLAGS_VIP | X86_EFLAGS_VIF)) {
save_v86_state(regs, VM86_STI);
return;
}
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 2b6f8a4f2731..f438e0c4aa8c 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2758,8 +2758,10 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *sptep,
else
pte_access &= ~ACC_WRITE_MASK;
+ if (!kvm_is_mmio_pfn(pfn))
+ spte |= shadow_me_mask;
+
spte |= (u64)pfn << PAGE_SHIFT;
- spte |= shadow_me_mask;
if (pte_access & ACC_WRITE_MASK) {
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 4c155ee0f89e..0133d26f16be 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -330,7 +330,7 @@ static noinline int vmalloc_fault(unsigned long address)
if (!pmd_k)
return -1;
- if (pmd_huge(*pmd_k))
+ if (pmd_large(*pmd_k))
return 0;
pte_k = pte_offset_kernel(pmd_k, address);
@@ -479,7 +479,7 @@ static noinline int vmalloc_fault(unsigned long address)
if (pud_none(*pud) || pud_pfn(*pud) != pud_pfn(*pud_ref))
BUG();
- if (pud_huge(*pud))
+ if (pud_large(*pud))
return 0;
pmd = pmd_offset(pud, address);
@@ -490,7 +490,7 @@ static noinline int vmalloc_fault(unsigned long address)
if (pmd_none(*pmd) || pmd_pfn(*pmd) != pmd_pfn(*pmd_ref))
BUG();
- if (pmd_huge(*pmd))
+ if (pmd_large(*pmd))
return 0;
pte_ref = pte_offset_kernel(pmd_ref, address);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index 848242821ef3..1eff36a87595 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -69,25 +69,18 @@ void amdgpu_connector_hotplug(struct drm_connector *connector)
/* don't do anything if sink is not display port, i.e.,
* passive dp->(dvi|hdmi) adaptor
*/
- if (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
- int saved_dpms = connector->dpms;
- /* Only turn off the display if it's physically disconnected */
- if (!amdgpu_display_hpd_sense(adev, amdgpu_connector->hpd.hpd)) {
- drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
- } else if (amdgpu_atombios_dp_needs_link_train(amdgpu_connector)) {
- /* Don't try to start link training before we
- * have the dpcd */
- if (amdgpu_atombios_dp_get_dpcd(amdgpu_connector))
- return;
-
- /* set it to OFF so that drm_helper_connector_dpms()
- * won't return immediately since the current state
- * is ON at this point.
- */
- connector->dpms = DRM_MODE_DPMS_OFF;
- drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
- }
- connector->dpms = saved_dpms;
+ if (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT &&
+ amdgpu_display_hpd_sense(adev, amdgpu_connector->hpd.hpd) &&
+ amdgpu_atombios_dp_needs_link_train(amdgpu_connector)) {
+ /* Don't start link training before we have the DPCD */
+ if (amdgpu_atombios_dp_get_dpcd(amdgpu_connector))
+ return;
+
+ /* Turn the connector off and back on immediately, which
+ * will trigger link training
+ */
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
}
}
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 7171968f261e..837332e84d78 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -36,8 +36,6 @@ void amdgpu_gem_object_free(struct drm_gem_object *gobj)
struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
if (robj) {
- if (robj->gem_base.import_attach)
- drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
amdgpu_mn_unregister(robj);
amdgpu_bo_unref(&robj);
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index ffe483980362..4d08957d2108 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -46,6 +46,8 @@ static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
amdgpu_bo_kunmap(bo);
+ if (bo->gem_base.import_attach)
+ drm_prime_gem_destroy(&bo->gem_base, bo->tbo.sg);
drm_gem_object_release(&bo->gem_base);
amdgpu_bo_unref(&bo->parent);
if (!list_empty(&bo->shadow_list)) {
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index 380f340204e8..f56f60f695e1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -268,13 +268,13 @@ nouveau_backlight_init(struct drm_device *dev)
struct nvif_device *device = &drm->client.device;
struct drm_connector *connector;
+ INIT_LIST_HEAD(&drm->bl_connectors);
+
if (apple_gmux_present()) {
NV_INFO(drm, "Apple GMUX detected: not registering Nouveau backlight interface\n");
return 0;
}
- INIT_LIST_HEAD(&drm->bl_connectors);
-
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
connector->connector_type != DRM_MODE_CONNECTOR_eDP)
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index 3386452bd2f0..ac467b80edc7 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -34,8 +34,6 @@ void radeon_gem_object_free(struct drm_gem_object *gobj)
struct radeon_bo *robj = gem_to_radeon_bo(gobj);
if (robj) {
- if (robj->gem_base.import_attach)
- drm_prime_gem_destroy(&robj->gem_base, robj->tbo.sg);
radeon_mn_unregister(robj);
radeon_bo_unref(&robj);
}
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 093594976126..baadb706c276 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -82,6 +82,8 @@ static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
mutex_unlock(&bo->rdev->gem.mutex);
radeon_bo_clear_surface_reg(bo);
WARN_ON_ONCE(!list_empty(&bo->va));
+ if (bo->gem_base.import_attach)
+ drm_prime_gem_destroy(&bo->gem_base, bo->tbo.sg);
drm_gem_object_release(&bo->gem_base);
kfree(bo);
}
diff --git a/drivers/infiniband/sw/rdmavt/mr.c b/drivers/infiniband/sw/rdmavt/mr.c
index 42713511b53b..524e6134642e 100644
--- a/drivers/infiniband/sw/rdmavt/mr.c
+++ b/drivers/infiniband/sw/rdmavt/mr.c
@@ -489,11 +489,13 @@ static int rvt_check_refs(struct rvt_mregion *mr, const char *t)
unsigned long timeout;
struct rvt_dev_info *rdi = ib_to_rvt(mr->pd->device);
- if (percpu_ref_is_zero(&mr->refcount))
- return 0;
- /* avoid dma mr */
- if (mr->lkey)
+ if (mr->lkey) {
+ /* avoid dma mr */
rvt_dereg_clean_qps(mr);
+ /* @mr was indexed on rcu protected @lkey_table */
+ synchronize_rcu();
+ }
+
timeout = wait_for_completion_timeout(&mr->comp, 5 * HZ);
if (!timeout) {
rvt_pr_err(rdi,
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index e88395605e32..af57f8473a88 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1310,7 +1310,7 @@ static struct irq_chip its_irq_chip = {
* This gives us (((1UL << id_bits) - 8192) >> 5) possible allocations.
*/
#define IRQS_PER_CHUNK_SHIFT 5
-#define IRQS_PER_CHUNK (1 << IRQS_PER_CHUNK_SHIFT)
+#define IRQS_PER_CHUNK (1UL << IRQS_PER_CHUNK_SHIFT)
#define ITS_MAX_LPI_NRBITS 16 /* 64K LPIs */
static unsigned long *lpi_bitmap;
@@ -2026,11 +2026,10 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
/*
- * At least one bit of EventID is being used, hence a minimum
- * of two entries. No, the architecture doesn't let you
- * express an ITT with a single entry.
+ * We allocate at least one chunk worth of LPIs bet device,
+ * and thus that many ITEs. The device may require less though.
*/
- nr_ites = max(2UL, roundup_pow_of_two(nvecs));
+ nr_ites = max(IRQS_PER_CHUNK, roundup_pow_of_two(nvecs));
sz = nr_ites * its->ite_size;
sz = max(sz, ITS_ITT_ALIGN) + ITS_ITT_ALIGN - 1;
itt = kzalloc(sz, GFP_KERNEL);
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 9603886737b5..2300c02ab5e6 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -102,11 +102,16 @@ qla2x00_async_iocb_timeout(void *data)
struct srb_iocb *lio = &sp->u.iocb_cmd;
struct event_arg ea;
- ql_dbg(ql_dbg_disc, fcport->vha, 0x2071,
- "Async-%s timeout - hdl=%x portid=%06x %8phC.\n",
- sp->name, sp->handle, fcport->d_id.b24, fcport->port_name);
+ if (fcport) {
+ ql_dbg(ql_dbg_disc, fcport->vha, 0x2071,
+ "Async-%s timeout - hdl=%x portid=%06x %8phC.\n",
+ sp->name, sp->handle, fcport->d_id.b24, fcport->port_name);
- fcport->flags &= ~FCF_ASYNC_SENT;
+ fcport->flags &= ~FCF_ASYNC_SENT;
+ } else {
+ pr_info("Async-%s timeout - hdl=%x.\n",
+ sp->name, sp->handle);
+ }
switch (sp->type) {
case SRB_LOGIN_CMD:
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 78df7cfca568..d77dde89118e 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -582,8 +582,9 @@ qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
ret = qla25xx_init_req_que(vha, req);
if (ret != QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
+
+ qla25xx_free_req_que(vha, req);
}
- qla25xx_free_req_que(vha, req);
return ret;
}
@@ -598,8 +599,9 @@ qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
ret = qla25xx_init_rsp_que(vha, rsp);
if (ret != QLA_SUCCESS)
return QLA_FUNCTION_FAILED;
+
+ qla25xx_free_rsp_que(vha, rsp);
}
- qla25xx_free_rsp_que(vha, rsp);
return ret;
}
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index cfe7654f6bd3..1e17175692d3 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -442,7 +442,7 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req,
ha->req_q_map[0] = req;
set_bit(0, ha->rsp_qid_map);
set_bit(0, ha->req_qid_map);
- return 1;
+ return 0;
fail_qpair_map:
kfree(ha->base_qpair);
@@ -459,6 +459,9 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req,
static void qla2x00_free_req_que(struct qla_hw_data *ha, struct req_que *req)
{
+ if (!ha->req_q_map)
+ return;
+
if (IS_QLAFX00(ha)) {
if (req && req->ring_fx00)
dma_free_coherent(&ha->pdev->dev,
@@ -469,14 +472,17 @@ static void qla2x00_free_req_que(struct qla_hw_data *ha, struct req_que *req)
(req->length + 1) * sizeof(request_t),
req->ring, req->dma);
- if (req)
+ if (req) {
kfree(req->outstanding_cmds);
-
- kfree(req);
+ kfree(req);
+ }
}
static void qla2x00_free_rsp_que(struct qla_hw_data *ha, struct rsp_que *rsp)
{
+ if (!ha->rsp_q_map)
+ return;
+
if (IS_QLAFX00(ha)) {
if (rsp && rsp->ring)
dma_free_coherent(&ha->pdev->dev,
@@ -487,7 +493,8 @@ static void qla2x00_free_rsp_que(struct qla_hw_data *ha, struct rsp_que *rsp)
(rsp->length + 1) * sizeof(response_t),
rsp->ring, rsp->dma);
}
- kfree(rsp);
+ if (rsp)
+ kfree(rsp);
}
static void qla2x00_free_queues(struct qla_hw_data *ha)
@@ -1710,6 +1717,8 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
struct qla_tgt_cmd *cmd;
uint8_t trace = 0;
+ if (!ha->req_q_map)
+ return;
spin_lock_irqsave(&ha->hardware_lock, flags);
for (que = 0; que < ha->max_req_queues; que++) {
req = ha->req_q_map[que];
@@ -3063,14 +3072,14 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
/* Set up the irqs */
ret = qla2x00_request_irqs(ha, rsp);
if (ret)
- goto probe_hw_failed;
+ goto probe_failed;
/* Alloc arrays of request and response ring ptrs */
- if (!qla2x00_alloc_queues(ha, req, rsp)) {
+ if (qla2x00_alloc_queues(ha, req, rsp)) {
ql_log(ql_log_fatal, base_vha, 0x003d,
"Failed to allocate memory for queue pointers..."
"aborting.\n");
- goto probe_init_failed;
+ goto probe_failed;
}
if (ha->mqenable && shost_use_blk_mq(host)) {
@@ -3347,15 +3356,6 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;
-probe_init_failed:
- qla2x00_free_req_que(ha, req);
- ha->req_q_map[0] = NULL;
- clear_bit(0, ha->req_qid_map);
- qla2x00_free_rsp_que(ha, rsp);
- ha->rsp_q_map[0] = NULL;
- clear_bit(0, ha->rsp_qid_map);
- ha->max_req_queues = ha->max_rsp_queues = 0;
-
probe_failed:
if (base_vha->timer_active)
qla2x00_stop_timer(base_vha);
@@ -4435,11 +4435,17 @@ qla2x00_mem_free(struct qla_hw_data *ha)
if (ha->init_cb)
dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
ha->init_cb, ha->init_cb_dma);
- vfree(ha->optrom_buffer);
- kfree(ha->nvram);
- kfree(ha->npiv_info);
- kfree(ha->swl);
- kfree(ha->loop_id_map);
+
+ if (ha->optrom_buffer)
+ vfree(ha->optrom_buffer);
+ if (ha->nvram)
+ kfree(ha->nvram);
+ if (ha->npiv_info)
+ kfree(ha->npiv_info);
+ if (ha->swl)
+ kfree(ha->swl);
+ if (ha->loop_id_map)
+ kfree(ha->loop_id_map);
ha->srb_mempool = NULL;
ha->ctx_mempool = NULL;
@@ -4455,6 +4461,15 @@ qla2x00_mem_free(struct qla_hw_data *ha)
ha->ex_init_cb_dma = 0;
ha->async_pd = NULL;
ha->async_pd_dma = 0;
+ ha->loop_id_map = NULL;
+ ha->npiv_info = NULL;
+ ha->optrom_buffer = NULL;
+ ha->swl = NULL;
+ ha->nvram = NULL;
+ ha->mctp_dump = NULL;
+ ha->dcbx_tlv = NULL;
+ ha->xgmac_data = NULL;
+ ha->sfp_data = NULL;
ha->s_dma_pool = NULL;
ha->dl_dma_pool = NULL;
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 040a76011ffa..d6fe08de59a0 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -971,6 +971,7 @@ static void qlt_free_session_done(struct work_struct *work)
logo.id = sess->d_id;
logo.cmd_count = 0;
+ sess->send_els_logo = 0;
qlt_send_first_logo(vha, &logo);
}
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index ea910acb4bb0..fc28819253f7 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -166,13 +166,15 @@
#define DWC3_GDBGFIFOSPACE_TYPE(n) (((n) << 5) & 0x1e0)
#define DWC3_GDBGFIFOSPACE_SPACE_AVAILABLE(n) (((n) >> 16) & 0xffff)
-#define DWC3_TXFIFOQ 1
-#define DWC3_RXFIFOQ 3
-#define DWC3_TXREQQ 5
-#define DWC3_RXREQQ 7
-#define DWC3_RXINFOQ 9
-#define DWC3_DESCFETCHQ 13
-#define DWC3_EVENTQ 15
+#define DWC3_TXFIFOQ 0
+#define DWC3_RXFIFOQ 1
+#define DWC3_TXREQQ 2
+#define DWC3_RXREQQ 3
+#define DWC3_RXINFOQ 4
+#define DWC3_PSTATQ 5
+#define DWC3_DESCFETCHQ 6
+#define DWC3_EVENTQ 7
+#define DWC3_AUXEVENTQ 8
/* Global RX Threshold Configuration Register */
#define DWC3_GRXTHRCFG_MAXRXBURSTSIZE(n) (((n) & 0x1f) << 19)
diff --git a/drivers/usb/gadget/udc/bdc/bdc_pci.c b/drivers/usb/gadget/udc/bdc/bdc_pci.c
index 02968842b359..708e36f530d8 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_pci.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_pci.c
@@ -82,6 +82,7 @@ static int bdc_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
if (ret) {
dev_err(&pci->dev,
"couldn't add resources to bdc device\n");
+ platform_device_put(bdc);
return ret;
}
diff --git a/fs/aio.c b/fs/aio.c
index 5a2487217072..c3ace7833a03 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -68,9 +68,9 @@ struct aio_ring {
#define AIO_RING_PAGES 8
struct kioctx_table {
- struct rcu_head rcu;
- unsigned nr;
- struct kioctx *table[];
+ struct rcu_head rcu;
+ unsigned nr;
+ struct kioctx __rcu *table[];
};
struct kioctx_cpu {
@@ -115,7 +115,8 @@ struct kioctx {
struct page **ring_pages;
long nr_pages;
- struct work_struct free_work;
+ struct rcu_head free_rcu;
+ struct work_struct free_work; /* see free_ioctx() */
/*
* signals when all in-flight requests are done
@@ -329,7 +330,7 @@ static int aio_ring_mremap(struct vm_area_struct *vma)
for (i = 0; i < table->nr; i++) {
struct kioctx *ctx;
- ctx = table->table[i];
+ ctx = rcu_dereference(table->table[i]);
if (ctx && ctx->aio_ring_file == file) {
if (!atomic_read(&ctx->dead)) {
ctx->user_id = ctx->mmap_base = vma->vm_start;
@@ -588,6 +589,12 @@ static int kiocb_cancel(struct aio_kiocb *kiocb)
return cancel(&kiocb->common);
}
+/*
+ * free_ioctx() should be RCU delayed to synchronize against the RCU
+ * protected lookup_ioctx() and also needs process context to call
+ * aio_free_ring(), so the double bouncing through kioctx->free_rcu and
+ * ->free_work.
+ */
static void free_ioctx(struct work_struct *work)
{
struct kioctx *ctx = container_of(work, struct kioctx, free_work);
@@ -601,6 +608,14 @@ static void free_ioctx(struct work_struct *work)
kmem_cache_free(kioctx_cachep, ctx);
}
+static void free_ioctx_rcufn(struct rcu_head *head)
+{
+ struct kioctx *ctx = container_of(head, struct kioctx, free_rcu);
+
+ INIT_WORK(&ctx->free_work, free_ioctx);
+ schedule_work(&ctx->free_work);
+}
+
static void free_ioctx_reqs(struct percpu_ref *ref)
{
struct kioctx *ctx = container_of(ref, struct kioctx, reqs);
@@ -609,8 +624,8 @@ static void free_ioctx_reqs(struct percpu_ref *ref)
if (ctx->rq_wait && atomic_dec_and_test(&ctx->rq_wait->count))
complete(&ctx->rq_wait->comp);
- INIT_WORK(&ctx->free_work, free_ioctx);
- schedule_work(&ctx->free_work);
+ /* Synchronize against RCU protected table->table[] dereferences */
+ call_rcu(&ctx->free_rcu, free_ioctx_rcufn);
}
/*
@@ -651,9 +666,9 @@ static int ioctx_add_table(struct kioctx *ctx, struct mm_struct *mm)
while (1) {
if (table)
for (i = 0; i < table->nr; i++)
- if (!table->table[i]) {
+ if (!rcu_access_pointer(table->table[i])) {
ctx->id = i;
- table->table[i] = ctx;
+ rcu_assign_pointer(table->table[i], ctx);
spin_unlock(&mm->ioctx_lock);
/* While kioctx setup is in progress,
@@ -834,11 +849,11 @@ static int kill_ioctx(struct mm_struct *mm, struct kioctx *ctx,
}
table = rcu_dereference_raw(mm->ioctx_table);
- WARN_ON(ctx != table->table[ctx->id]);
- table->table[ctx->id] = NULL;
+ WARN_ON(ctx != rcu_access_pointer(table->table[ctx->id]));
+ RCU_INIT_POINTER(table->table[ctx->id], NULL);
spin_unlock(&mm->ioctx_lock);
- /* percpu_ref_kill() will do the necessary call_rcu() */
+ /* free_ioctx_reqs() will do the necessary RCU synchronization */
wake_up_all(&ctx->wait);
/*
@@ -880,7 +895,8 @@ void exit_aio(struct mm_struct *mm)
skipped = 0;
for (i = 0; i < table->nr; ++i) {
- struct kioctx *ctx = table->table[i];
+ struct kioctx *ctx =
+ rcu_dereference_protected(table->table[i], true);
if (!ctx) {
skipped++;
@@ -1069,7 +1085,7 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id)
if (!table || id >= table->nr)
goto out;
- ctx = table->table[id];
+ ctx = rcu_dereference(table->table[id]);
if (ctx && ctx->user_id == ctx_id) {
percpu_ref_get(&ctx->users);
ret = ctx;
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index b517ef1477ea..0531cb9a3ba9 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1252,7 +1252,16 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans,
while (node) {
ref = rb_entry(node, struct prelim_ref, rbnode);
node = rb_next(&ref->rbnode);
- WARN_ON(ref->count < 0);
+ /*
+ * ref->count < 0 can happen here if there are delayed
+ * refs with a node->action of BTRFS_DROP_DELAYED_REF.
+ * prelim_ref_insert() relies on this when merging
+ * identical refs to keep the overall count correct.
+ * prelim_ref_insert() will merge only those refs
+ * which compare identically. Any refs having
+ * e.g. different offsets would not be merged,
+ * and would retain their original ref->count < 0.
+ */
if (roots && ref->count && ref->root_id && ref->parent == 0) {
if (sc && sc->root_objectid &&
ref->root_id != sc->root_objectid) {
@@ -1496,6 +1505,7 @@ int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr)
if (!node)
break;
bytenr = node->val;
+ shared.share_count = 0;
cond_resched();
}
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 6154825c30e1..32b186c5694c 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1348,6 +1348,7 @@ static int find_bio_stripe(struct btrfs_raid_bio *rbio,
stripe_start = stripe->physical;
if (physical >= stripe_start &&
physical < stripe_start + rbio->stripe_len &&
+ stripe->dev->bdev &&
bio->bi_disk == stripe->dev->bdev->bd_disk &&
bio->bi_partno == stripe->dev->bdev->bd_partno) {
return i;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index bc534fafacf9..71b3cd634436 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -589,6 +589,7 @@ void btrfs_free_stale_device(struct btrfs_device *cur_dev)
btrfs_sysfs_remove_fsid(fs_devs);
list_del(&fs_devs->list);
free_fs_devices(fs_devs);
+ break;
} else {
fs_devs->num_devices--;
list_del(&dev->dev_list);
@@ -4733,10 +4734,13 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
ndevs = min(ndevs, devs_max);
/*
- * the primary goal is to maximize the number of stripes, so use as many
- * devices as possible, even if the stripes are not maximum sized.
+ * The primary goal is to maximize the number of stripes, so use as
+ * many devices as possible, even if the stripes are not maximum sized.
+ *
+ * The DUP profile stores more than one stripe per device, the
+ * max_avail is the total size so we have to adjust.
*/
- stripe_size = devices_info[ndevs-1].max_avail;
+ stripe_size = div_u64(devices_info[ndevs - 1].max_avail, dev_stripes);
num_stripes = ndevs * dev_stripes;
/*
@@ -4771,8 +4775,6 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
stripe_size = devices_info[ndevs-1].max_avail;
}
- stripe_size = div_u64(stripe_size, dev_stripes);
-
/* align to BTRFS_STRIPE_LEN */
stripe_size = round_down(stripe_size, BTRFS_STRIPE_LEN);
@@ -7080,10 +7082,24 @@ int btrfs_run_dev_stats(struct btrfs_trans_handle *trans,
mutex_lock(&fs_devices->device_list_mutex);
list_for_each_entry(device, &fs_devices->devices, dev_list) {
- if (!device->dev_stats_valid || !btrfs_dev_stats_dirty(device))
+ stats_cnt = atomic_read(&device->dev_stats_ccnt);
+ if (!device->dev_stats_valid || stats_cnt == 0)
continue;
- stats_cnt = atomic_read(&device->dev_stats_ccnt);
+
+ /*
+ * There is a LOAD-LOAD control dependency between the value of
+ * dev_stats_ccnt and updating the on-disk values which requires
+ * reading the in-memory counters. Such control dependencies
+ * require explicit read memory barriers.
+ *
+ * This memory barriers pairs with smp_mb__before_atomic in
+ * btrfs_dev_stat_inc/btrfs_dev_stat_set and with the full
+ * barrier implied by atomic_xchg in
+ * btrfs_dev_stats_read_and_reset
+ */
+ smp_rmb();
+
ret = update_dev_stat_item(trans, fs_info, device);
if (!ret)
atomic_sub(stats_cnt, &device->dev_stats_ccnt);
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 6108fdfec67f..c5dd48eb7b3d 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -498,6 +498,12 @@ static inline void btrfs_dev_stat_inc(struct btrfs_device *dev,
int index)
{
atomic_inc(dev->dev_stat_values + index);
+ /*
+ * This memory barrier orders stores updating statistics before stores
+ * updating dev_stats_ccnt.
+ *
+ * It pairs with smp_rmb() in btrfs_run_dev_stats().
+ */
smp_mb__before_atomic();
atomic_inc(&dev->dev_stats_ccnt);
}
@@ -523,6 +529,12 @@ static inline void btrfs_dev_stat_set(struct btrfs_device *dev,
int index, unsigned long val)
{
atomic_set(dev->dev_stat_values + index, val);
+ /*
+ * This memory barrier orders stores updating statistics before stores
+ * updating dev_stats_ccnt.
+ *
+ * It pairs with smp_rmb() in btrfs_run_dev_stats().
+ */
smp_mb__before_atomic();
atomic_inc(&dev->dev_stats_ccnt);
}
diff --git a/fs/dcache.c b/fs/dcache.c
index b8d999a5768b..a1417787e269 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -644,11 +644,16 @@ static inline struct dentry *lock_parent(struct dentry *dentry)
spin_unlock(&parent->d_lock);
goto again;
}
- rcu_read_unlock();
- if (parent != dentry)
+ if (parent != dentry) {
spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
- else
+ if (unlikely(dentry->d_lockref.count < 0)) {
+ spin_unlock(&parent->d_lock);
+ parent = NULL;
+ }
+ } else {
parent = NULL;
+ }
+ rcu_read_unlock();
return parent;
}
diff --git a/fs/namei.c b/fs/namei.c
index cbe24e367a70..f839b0750ca3 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -578,9 +578,10 @@ static int __nd_alloc_stack(struct nameidata *nd)
static bool path_connected(const struct path *path)
{
struct vfsmount *mnt = path->mnt;
+ struct super_block *sb = mnt->mnt_sb;
- /* Only bind mounts can have disconnected paths */
- if (mnt->mnt_root == mnt->mnt_sb->s_root)
+ /* Bind mounts and multi-root filesystems can have disconnected paths */
+ if (!(sb->s_iflags & SB_I_MULTIROOT) && (mnt->mnt_root == sb->s_root))
return true;
return is_subdir(path->dentry, mnt->mnt_root);
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 216f67d628b3..38de09b08e96 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2623,6 +2623,8 @@ struct dentry *nfs_fs_mount_common(struct nfs_server *server,
/* initial superblock/root creation */
mount_info->fill_super(s, mount_info);
nfs_get_cache_cookie(s, mount_info->parsed, mount_info->cloned);
+ if (!(server->flags & NFS_MOUNT_UNSHARED))
+ s->s_iflags |= SB_I_MULTIROOT;
}
mntroot = nfs_get_root(s, mount_info->mntfh, dev_name);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d54f41a63dbf..cc613f20e5a6 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1312,6 +1312,7 @@ extern int send_sigurg(struct fown_struct *fown);
#define SB_I_CGROUPWB 0x00000001 /* cgroup-aware writeback enabled */
#define SB_I_NOEXEC 0x00000002 /* Ignore executables on this fs */
#define SB_I_NODEV 0x00000004 /* Ignore devices on this fs */
+#define SB_I_MULTIROOT 0x00000008 /* Multiple roots to the dentry tree */
/* sb->s_iflags to limit user namespace mounts */
#define SB_I_USERNS_VISIBLE 0x00000010 /* fstype already mounted */
diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index 14b74f22d43c..bacb499c512c 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -501,6 +501,7 @@
#define ICH_HCR_EN (1 << 0)
#define ICH_HCR_UIE (1 << 1)
+#define ICH_HCR_NPIE (1 << 3)
#define ICH_HCR_TC (1 << 10)
#define ICH_HCR_TALL0 (1 << 11)
#define ICH_HCR_TALL1 (1 << 12)
diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h
index d3453ee072fc..68d8b1f73682 100644
--- a/include/linux/irqchip/arm-gic.h
+++ b/include/linux/irqchip/arm-gic.h
@@ -84,6 +84,7 @@
#define GICH_HCR_EN (1 << 0)
#define GICH_HCR_UIE (1 << 1)
+#define GICH_HCR_NPIE (1 << 3)
#define GICH_LR_VIRTUALID (0x3ff << 0)
#define GICH_LR_PHYSID_CPUID_SHIFT (10)
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index c2db7e905f7d..012881461058 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -1762,10 +1762,9 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
return -ENOMEM;
_snd_pcm_hw_params_any(params);
err = snd_pcm_hw_refine(substream, params);
- format_mask = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT);
- kfree(params);
if (err < 0)
- return err;
+ goto error;
+ format_mask = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT);
for (fmt = 0; fmt < 32; ++fmt) {
if (snd_mask_test(format_mask, fmt)) {
int f = snd_pcm_oss_format_to(fmt);
@@ -1773,7 +1772,10 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
formats |= f;
}
}
- return formats;
+
+ error:
+ kfree(params);
+ return err < 0 ? err : formats;
}
static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 1f3aa466ac9b..a4c571cb3b87 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -255,12 +255,12 @@ static int seq_free_client1(struct snd_seq_client *client)
if (!client)
return 0;
- snd_seq_delete_all_ports(client);
- snd_seq_queue_client_leave(client->number);
spin_lock_irqsave(&clients_lock, flags);
clienttablock[client->number] = 1;
clienttab[client->number] = NULL;
spin_unlock_irqrestore(&clients_lock, flags);
+ snd_seq_delete_all_ports(client);
+ snd_seq_queue_client_leave(client->number);
snd_use_lock_sync(&client->use_lock);
snd_seq_queue_client_termination(client->number);
if (client->pool)
diff --git a/sound/core/seq/seq_prioq.c b/sound/core/seq/seq_prioq.c
index bc1c8488fc2a..2bc6759e4adc 100644
--- a/sound/core/seq/seq_prioq.c
+++ b/sound/core/seq/seq_prioq.c
@@ -87,7 +87,7 @@ void snd_seq_prioq_delete(struct snd_seq_prioq **fifo)
if (f->cells > 0) {
/* drain prioQ */
while (f->cells > 0)
- snd_seq_cell_free(snd_seq_prioq_cell_out(f));
+ snd_seq_cell_free(snd_seq_prioq_cell_out(f, NULL));
}
kfree(f);
@@ -214,8 +214,18 @@ int snd_seq_prioq_cell_in(struct snd_seq_prioq * f,
return 0;
}
+/* return 1 if the current time >= event timestamp */
+static int event_is_ready(struct snd_seq_event *ev, void *current_time)
+{
+ if ((ev->flags & SNDRV_SEQ_TIME_STAMP_MASK) == SNDRV_SEQ_TIME_STAMP_TICK)
+ return snd_seq_compare_tick_time(current_time, &ev->time.tick);
+ else
+ return snd_seq_compare_real_time(current_time, &ev->time.time);
+}
+
/* dequeue cell from prioq */
-struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f)
+struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
+ void *current_time)
{
struct snd_seq_event_cell *cell;
unsigned long flags;
@@ -227,6 +237,8 @@ struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f)
spin_lock_irqsave(&f->lock, flags);
cell = f->head;
+ if (cell && current_time && !event_is_ready(&cell->event, current_time))
+ cell = NULL;
if (cell) {
f->head = cell->next;
@@ -252,18 +264,6 @@ int snd_seq_prioq_avail(struct snd_seq_prioq * f)
return f->cells;
}
-
-/* peek at cell at the head of the prioq */
-struct snd_seq_event_cell *snd_seq_prioq_cell_peek(struct snd_seq_prioq * f)
-{
- if (f == NULL) {
- pr_debug("ALSA: seq: snd_seq_prioq_cell_in() called with NULL prioq\n");
- return NULL;
- }
- return f->head;
-}
-
-
static inline int prioq_match(struct snd_seq_event_cell *cell,
int client, int timestamp)
{
diff --git a/sound/core/seq/seq_prioq.h b/sound/core/seq/seq_prioq.h
index d38bb78d9345..2c315ca10fc4 100644
--- a/sound/core/seq/seq_prioq.h
+++ b/sound/core/seq/seq_prioq.h
@@ -44,14 +44,12 @@ void snd_seq_prioq_delete(struct snd_seq_prioq **fifo);
int snd_seq_prioq_cell_in(struct snd_seq_prioq *f, struct snd_seq_event_cell *cell);
/* dequeue cell from prioq */
-struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f);
+struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
+ void *current_time);
/* return number of events available in prioq */
int snd_seq_prioq_avail(struct snd_seq_prioq *f);
-/* peek at cell at the head of the prioq */
-struct snd_seq_event_cell *snd_seq_prioq_cell_peek(struct snd_seq_prioq *f);
-
/* client left queue */
void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp);
diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c
index 79e0c5604ef8..1a6dc4ff44a6 100644
--- a/sound/core/seq/seq_queue.c
+++ b/sound/core/seq/seq_queue.c
@@ -277,30 +277,20 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
__again:
/* Process tick queue... */
- while ((cell = snd_seq_prioq_cell_peek(q->tickq)) != NULL) {
- if (snd_seq_compare_tick_time(&q->timer->tick.cur_tick,
- &cell->event.time.tick)) {
- cell = snd_seq_prioq_cell_out(q->tickq);
- if (cell)
- snd_seq_dispatch_event(cell, atomic, hop);
- } else {
- /* event remains in the queue */
+ for (;;) {
+ cell = snd_seq_prioq_cell_out(q->tickq,
+ &q->timer->tick.cur_tick);
+ if (!cell)
break;
- }
+ snd_seq_dispatch_event(cell, atomic, hop);
}
-
/* Process time queue... */
- while ((cell = snd_seq_prioq_cell_peek(q->timeq)) != NULL) {
- if (snd_seq_compare_real_time(&q->timer->cur_time,
- &cell->event.time.time)) {
- cell = snd_seq_prioq_cell_out(q->timeq);
- if (cell)
- snd_seq_dispatch_event(cell, atomic, hop);
- } else {
- /* event remains in the queue */
+ for (;;) {
+ cell = snd_seq_prioq_cell_out(q->timeq, &q->timer->cur_time);
+ if (!cell)
break;
- }
+ snd_seq_dispatch_event(cell, atomic, hop);
}
/* free lock */
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 96143df19b21..d5017adf9feb 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -181,11 +181,15 @@ static const struct kernel_param_ops param_ops_xint = {
};
#define param_check_xint param_check_int
-static int power_save = -1;
+static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
module_param(power_save, xint, 0644);
MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
"(in second, 0 = disable).");
+static bool pm_blacklist = true;
+module_param(pm_blacklist, bool, 0644);
+MODULE_PARM_DESC(pm_blacklist, "Enable power-management blacklist");
+
/* reset the HD-audio controller in power save mode.
* this may give more power-saving, but will take longer time to
* wake up.
@@ -2300,10 +2304,9 @@ static int azx_probe_continue(struct azx *chip)
val = power_save;
#ifdef CONFIG_PM
- if (val == -1) {
+ if (pm_blacklist) {
const struct snd_pci_quirk *q;
- val = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
q = snd_pci_quirk_lookup(chip->pci, power_save_blacklist);
if (q && val) {
dev_info(chip->card->dev, "device %04x:%04x is on the power_save blacklist, forcing power_save to 0\n",
diff --git a/tools/testing/selftests/x86/entry_from_vm86.c b/tools/testing/selftests/x86/entry_from_vm86.c
index d075ea0e5ca1..ade443a88421 100644
--- a/tools/testing/selftests/x86/entry_from_vm86.c
+++ b/tools/testing/selftests/x86/entry_from_vm86.c
@@ -95,6 +95,31 @@ asm (
"int3\n\t"
"vmcode_int80:\n\t"
"int $0x80\n\t"
+ "vmcode_popf_hlt:\n\t"
+ "push %ax\n\t"
+ "popf\n\t"
+ "hlt\n\t"
+ "vmcode_umip:\n\t"
+ /* addressing via displacements */
+ "smsw (2052)\n\t"
+ "sidt (2054)\n\t"
+ "sgdt (2060)\n\t"
+ /* addressing via registers */
+ "mov $2066, %bx\n\t"
+ "smsw (%bx)\n\t"
+ "mov $2068, %bx\n\t"
+ "sidt (%bx)\n\t"
+ "mov $2074, %bx\n\t"
+ "sgdt (%bx)\n\t"
+ /* register operands, only for smsw */
+ "smsw %ax\n\t"
+ "mov %ax, (2080)\n\t"
+ "int3\n\t"
+ "vmcode_umip_str:\n\t"
+ "str %eax\n\t"
+ "vmcode_umip_sldt:\n\t"
+ "sldt %eax\n\t"
+ "int3\n\t"
".size vmcode, . - vmcode\n\t"
"end_vmcode:\n\t"
".code32\n\t"
@@ -103,7 +128,8 @@ asm (
extern unsigned char vmcode[], end_vmcode[];
extern unsigned char vmcode_bound[], vmcode_sysenter[], vmcode_syscall[],
- vmcode_sti[], vmcode_int3[], vmcode_int80[];
+ vmcode_sti[], vmcode_int3[], vmcode_int80[], vmcode_popf_hlt[],
+ vmcode_umip[], vmcode_umip_str[], vmcode_umip_sldt[];
/* Returns false if the test was skipped. */
static bool do_test(struct vm86plus_struct *v86, unsigned long eip,
@@ -153,13 +179,75 @@ static bool do_test(struct vm86plus_struct *v86, unsigned long eip,
(VM86_TYPE(ret) == rettype && VM86_ARG(ret) == retarg)) {
printf("[OK]\tReturned correctly\n");
} else {
- printf("[FAIL]\tIncorrect return reason\n");
+ printf("[FAIL]\tIncorrect return reason (started at eip = 0x%lx, ended at eip = 0x%lx)\n", eip, v86->regs.eip);
nerrs++;
}
return true;
}
+void do_umip_tests(struct vm86plus_struct *vm86, unsigned char *test_mem)
+{
+ struct table_desc {
+ unsigned short limit;
+ unsigned long base;
+ } __attribute__((packed));
+
+ /* Initialize variables with arbitrary values */
+ struct table_desc gdt1 = { .base = 0x3c3c3c3c, .limit = 0x9999 };
+ struct table_desc gdt2 = { .base = 0x1a1a1a1a, .limit = 0xaeae };
+ struct table_desc idt1 = { .base = 0x7b7b7b7b, .limit = 0xf1f1 };
+ struct table_desc idt2 = { .base = 0x89898989, .limit = 0x1313 };
+ unsigned short msw1 = 0x1414, msw2 = 0x2525, msw3 = 3737;
+
+ /* UMIP -- exit with INT3 unless kernel emulation did not trap #GP */
+ do_test(vm86, vmcode_umip - vmcode, VM86_TRAP, 3, "UMIP tests");
+
+ /* Results from displacement-only addressing */
+ msw1 = *(unsigned short *)(test_mem + 2052);
+ memcpy(&idt1, test_mem + 2054, sizeof(idt1));
+ memcpy(&gdt1, test_mem + 2060, sizeof(gdt1));
+
+ /* Results from register-indirect addressing */
+ msw2 = *(unsigned short *)(test_mem + 2066);
+ memcpy(&idt2, test_mem + 2068, sizeof(idt2));
+ memcpy(&gdt2, test_mem + 2074, sizeof(gdt2));
+
+ /* Results when using register operands */
+ msw3 = *(unsigned short *)(test_mem + 2080);
+
+ printf("[INFO]\tResult from SMSW:[0x%04x]\n", msw1);
+ printf("[INFO]\tResult from SIDT: limit[0x%04x]base[0x%08lx]\n",
+ idt1.limit, idt1.base);
+ printf("[INFO]\tResult from SGDT: limit[0x%04x]base[0x%08lx]\n",
+ gdt1.limit, gdt1.base);
+
+ if (msw1 != msw2 || msw1 != msw3)
+ printf("[FAIL]\tAll the results of SMSW should be the same.\n");
+ else
+ printf("[PASS]\tAll the results from SMSW are identical.\n");
+
+ if (memcmp(&gdt1, &gdt2, sizeof(gdt1)))
+ printf("[FAIL]\tAll the results of SGDT should be the same.\n");
+ else
+ printf("[PASS]\tAll the results from SGDT are identical.\n");
+
+ if (memcmp(&idt1, &idt2, sizeof(idt1)))
+ printf("[FAIL]\tAll the results of SIDT should be the same.\n");
+ else
+ printf("[PASS]\tAll the results from SIDT are identical.\n");
+
+ sethandler(SIGILL, sighandler, 0);
+ do_test(vm86, vmcode_umip_str - vmcode, VM86_SIGNAL, 0,
+ "STR instruction");
+ clearhandler(SIGILL);
+
+ sethandler(SIGILL, sighandler, 0);
+ do_test(vm86, vmcode_umip_sldt - vmcode, VM86_SIGNAL, 0,
+ "SLDT instruction");
+ clearhandler(SIGILL);
+}
+
int main(void)
{
struct vm86plus_struct v86;
@@ -180,6 +268,9 @@ int main(void)
v86.regs.ds = load_addr / 16;
v86.regs.es = load_addr / 16;
+ /* Use the end of the page as our stack. */
+ v86.regs.esp = 4096;
+
assert((v86.regs.cs & 3) == 0); /* Looks like RPL = 0 */
/* #BR -- should deliver SIG??? */
@@ -211,6 +302,23 @@ int main(void)
v86.regs.eflags &= ~X86_EFLAGS_IF;
do_test(&v86, vmcode_sti - vmcode, VM86_STI, 0, "STI with VIP set");
+ /* POPF with VIP set but IF clear: should not trap */
+ v86.regs.eflags = X86_EFLAGS_VIP;
+ v86.regs.eax = 0;
+ do_test(&v86, vmcode_popf_hlt - vmcode, VM86_UNKNOWN, 0, "POPF with VIP set and IF clear");
+
+ /* POPF with VIP set and IF set: should trap */
+ v86.regs.eflags = X86_EFLAGS_VIP;
+ v86.regs.eax = X86_EFLAGS_IF;
+ do_test(&v86, vmcode_popf_hlt - vmcode, VM86_STI, 0, "POPF with VIP and IF set");
+
+ /* POPF with VIP clear and IF set: should not trap */
+ v86.regs.eflags = 0;
+ v86.regs.eax = X86_EFLAGS_IF;
+ do_test(&v86, vmcode_popf_hlt - vmcode, VM86_UNKNOWN, 0, "POPF with VIP clear and IF set");
+
+ v86.regs.eflags = 0;
+
/* INT3 -- should cause #BP */
do_test(&v86, vmcode_int3 - vmcode, VM86_TRAP, 3, "INT3");
@@ -218,6 +326,9 @@ int main(void)
v86.regs.eax = (unsigned int)-1;
do_test(&v86, vmcode_int80 - vmcode, VM86_INTx, 0x80, "int80");
+ /* UMIP -- should exit with INTx 0x80 unless UMIP was not disabled */
+ do_umip_tests(&v86, addr);
+
/* Execute a null pointer */
v86.regs.cs = 0;
v86.regs.ss = 0;
@@ -231,7 +342,7 @@ int main(void)
clearhandler(SIGSEGV);
/* Make sure nothing explodes if we fork. */
- if (fork() > 0)
+ if (fork() == 0)
return 0;
return (nerrs == 0 ? 0 : 1);
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 8e89d63005c7..49a7d8c75937 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -602,7 +602,7 @@ int kvm_timer_hyp_init(void)
return err;
}
- kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
+ kvm_debug("virtual timer IRQ%d\n", host_vtimer_irq);
cpuhp_setup_state(CPUHP_AP_KVM_ARM_TIMER_STARTING,
"kvm/arm/timer:starting", kvm_timer_starting_cpu,
diff --git a/virt/kvm/arm/hyp/vgic-v3-sr.c b/virt/kvm/arm/hyp/vgic-v3-sr.c
index 91728faa13fd..f2d1d4e8ae59 100644
--- a/virt/kvm/arm/hyp/vgic-v3-sr.c
+++ b/virt/kvm/arm/hyp/vgic-v3-sr.c
@@ -215,7 +215,8 @@ void __hyp_text __vgic_v3_save_state(struct kvm_vcpu *vcpu)
* are now visible to the system register interface.
*/
if (!cpu_if->vgic_sre) {
- dsb(st);
+ dsb(sy);
+ isb();
cpu_if->vgic_vmcr = read_gicreg(ICH_VMCR_EL2);
}
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index 9dea96380339..b69798a7880e 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -1760,9 +1760,9 @@ int kvm_mmu_init(void)
*/
BUG_ON((hyp_idmap_start ^ (hyp_idmap_end - 1)) & PAGE_MASK);
- kvm_info("IDMAP page: %lx\n", hyp_idmap_start);
- kvm_info("HYP VA range: %lx:%lx\n",
- kern_hyp_va(PAGE_OFFSET), kern_hyp_va(~0UL));
+ kvm_debug("IDMAP page: %lx\n", hyp_idmap_start);
+ kvm_debug("HYP VA range: %lx:%lx\n",
+ kern_hyp_va(PAGE_OFFSET), kern_hyp_va(~0UL));
if (hyp_idmap_start >= kern_hyp_va(PAGE_OFFSET) &&
hyp_idmap_start < kern_hyp_va(~0UL) &&
diff --git a/virt/kvm/arm/vgic/vgic-v2.c b/virt/kvm/arm/vgic/vgic-v2.c
index e4187e52bb26..841d4b27555a 100644
--- a/virt/kvm/arm/vgic/vgic-v2.c
+++ b/virt/kvm/arm/vgic/vgic-v2.c
@@ -37,6 +37,13 @@ void vgic_v2_init_lrs(void)
vgic_v2_write_lr(i, 0);
}
+void vgic_v2_set_npie(struct kvm_vcpu *vcpu)
+{
+ struct vgic_v2_cpu_if *cpuif = &vcpu->arch.vgic_cpu.vgic_v2;
+
+ cpuif->vgic_hcr |= GICH_HCR_NPIE;
+}
+
void vgic_v2_set_underflow(struct kvm_vcpu *vcpu)
{
struct vgic_v2_cpu_if *cpuif = &vcpu->arch.vgic_cpu.vgic_v2;
@@ -63,7 +70,7 @@ void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu)
struct vgic_v2_cpu_if *cpuif = &vgic_cpu->vgic_v2;
int lr;
- cpuif->vgic_hcr &= ~GICH_HCR_UIE;
+ cpuif->vgic_hcr &= ~(GICH_HCR_UIE | GICH_HCR_NPIE);
for (lr = 0; lr < vgic_cpu->used_lrs; lr++) {
u32 val = cpuif->vgic_lr[lr];
@@ -380,7 +387,7 @@ int vgic_v2_probe(const struct gic_kvm_info *info)
kvm_vgic_global_state.type = VGIC_V2;
kvm_vgic_global_state.max_gic_vcpus = VGIC_V2_MAX_CPUS;
- kvm_info("vgic-v2@...x\n", info->vctrl.start);
+ kvm_debug("vgic-v2@...x\n", info->vctrl.start);
return 0;
out:
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c
index 502f2100e7bf..9dcc31600a8b 100644
--- a/virt/kvm/arm/vgic/vgic-v3.c
+++ b/virt/kvm/arm/vgic/vgic-v3.c
@@ -25,6 +25,13 @@ static bool group0_trap;
static bool group1_trap;
static bool common_trap;
+void vgic_v3_set_npie(struct kvm_vcpu *vcpu)
+{
+ struct vgic_v3_cpu_if *cpuif = &vcpu->arch.vgic_cpu.vgic_v3;
+
+ cpuif->vgic_hcr |= ICH_HCR_NPIE;
+}
+
void vgic_v3_set_underflow(struct kvm_vcpu *vcpu)
{
struct vgic_v3_cpu_if *cpuif = &vcpu->arch.vgic_cpu.vgic_v3;
@@ -45,7 +52,7 @@ void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu)
u32 model = vcpu->kvm->arch.vgic.vgic_model;
int lr;
- cpuif->vgic_hcr &= ~ICH_HCR_UIE;
+ cpuif->vgic_hcr &= ~(ICH_HCR_UIE | ICH_HCR_NPIE);
for (lr = 0; lr < vgic_cpu->used_lrs; lr++) {
u64 val = cpuif->vgic_lr[lr];
diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c
index da53c6e7d688..c9a8e7b7c300 100644
--- a/virt/kvm/arm/vgic/vgic.c
+++ b/virt/kvm/arm/vgic/vgic.c
@@ -610,22 +610,37 @@ static inline void vgic_set_underflow(struct kvm_vcpu *vcpu)
vgic_v3_set_underflow(vcpu);
}
+static inline void vgic_set_npie(struct kvm_vcpu *vcpu)
+{
+ if (kvm_vgic_global_state.type == VGIC_V2)
+ vgic_v2_set_npie(vcpu);
+ else
+ vgic_v3_set_npie(vcpu);
+}
+
/* Requires the ap_list_lock to be held. */
-static int compute_ap_list_depth(struct kvm_vcpu *vcpu)
+static int compute_ap_list_depth(struct kvm_vcpu *vcpu,
+ bool *multi_sgi)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
struct vgic_irq *irq;
int count = 0;
+ *multi_sgi = false;
+
DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&vgic_cpu->ap_list_lock));
list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) {
spin_lock(&irq->irq_lock);
/* GICv2 SGIs can count for more than one... */
- if (vgic_irq_is_sgi(irq->intid) && irq->source)
- count += hweight8(irq->source);
- else
+ if (vgic_irq_is_sgi(irq->intid) && irq->source) {
+ int w = hweight8(irq->source);
+
+ count += w;
+ *multi_sgi |= (w > 1);
+ } else {
count++;
+ }
spin_unlock(&irq->irq_lock);
}
return count;
@@ -636,28 +651,43 @@ static void vgic_flush_lr_state(struct kvm_vcpu *vcpu)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
struct vgic_irq *irq;
- int count = 0;
+ int count;
+ bool npie = false;
+ bool multi_sgi;
+ u8 prio = 0xff;
DEBUG_SPINLOCK_BUG_ON(!spin_is_locked(&vgic_cpu->ap_list_lock));
- if (compute_ap_list_depth(vcpu) > kvm_vgic_global_state.nr_lr)
+ count = compute_ap_list_depth(vcpu, &multi_sgi);
+ if (count > kvm_vgic_global_state.nr_lr || multi_sgi)
vgic_sort_ap_list(vcpu);
+ count = 0;
+
list_for_each_entry(irq, &vgic_cpu->ap_list_head, ap_list) {
spin_lock(&irq->irq_lock);
- if (unlikely(vgic_target_oracle(irq) != vcpu))
- goto next;
-
/*
- * If we get an SGI with multiple sources, try to get
- * them in all at once.
+ * If we have multi-SGIs in the pipeline, we need to
+ * guarantee that they are all seen before any IRQ of
+ * lower priority. In that case, we need to filter out
+ * these interrupts by exiting early. This is easy as
+ * the AP list has been sorted already.
*/
- do {
+ if (multi_sgi && irq->priority > prio) {
+ spin_unlock(&irq->irq_lock);
+ break;
+ }
+
+ if (likely(vgic_target_oracle(irq) == vcpu)) {
vgic_populate_lr(vcpu, irq, count++);
- } while (irq->source && count < kvm_vgic_global_state.nr_lr);
-next:
+ if (irq->source) {
+ npie = true;
+ prio = irq->priority;
+ }
+ }
+
spin_unlock(&irq->irq_lock);
if (count == kvm_vgic_global_state.nr_lr) {
@@ -668,6 +698,9 @@ static void vgic_flush_lr_state(struct kvm_vcpu *vcpu)
}
}
+ if (npie)
+ vgic_set_npie(vcpu);
+
vcpu->arch.vgic_cpu.used_lrs = count;
/* Nuke remaining LRs */
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index bf9ceab67c77..f7450dc41ab3 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -150,6 +150,7 @@ void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu);
void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr);
void vgic_v2_set_underflow(struct kvm_vcpu *vcpu);
+void vgic_v2_set_npie(struct kvm_vcpu *vcpu);
int vgic_v2_has_attr_regs(struct kvm_device *dev, struct kvm_device_attr *attr);
int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
int offset, u32 *val);
@@ -179,6 +180,7 @@ void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu);
void vgic_v3_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr);
void vgic_v3_set_underflow(struct kvm_vcpu *vcpu);
+void vgic_v3_set_npie(struct kvm_vcpu *vcpu);
void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
void vgic_v3_enable(struct kvm_vcpu *vcpu);
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