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SubjectRe: Linux 4.19.50
diff --git a/Makefile b/Makefile
index e84966c49117..f7e7e365e2ff 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 19
-SUBLEVEL = 49
+SUBLEVEL = 50
EXTRAVERSION =
NAME = "People's Front"

diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 7c0b2e6cdfbd..4c7a93f4039a 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -211,6 +211,12 @@ const char *get_system_type(void)
return ath79_sys_type;
}

+int get_c0_perfcount_int(void)
+{
+ return ATH79_MISC_IRQ(5);
+}
+EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
+
unsigned int get_c0_compare_int(void)
{
return CP0_LEGACY_COMPARE_IRQ;
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index 2f616ebeb7e0..7755a1fad05a 100644
--- a/arch/mips/mm/mmap.c
+++ b/arch/mips/mm/mmap.c
@@ -203,6 +203,11 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)

int __virt_addr_valid(const volatile void *kaddr)
{
+ unsigned long vaddr = (unsigned long)vaddr;
+
+ if ((vaddr < PAGE_OFFSET) || (vaddr >= MAP_BASE))
+ return 0;
+
return pfn_valid(PFN_DOWN(virt_to_phys(kaddr)));
}
EXPORT_SYMBOL_GPL(__virt_addr_valid);
diff --git a/arch/mips/pistachio/Platform b/arch/mips/pistachio/Platform
index d80cd612df1f..c3592b374ad2 100644
--- a/arch/mips/pistachio/Platform
+++ b/arch/mips/pistachio/Platform
@@ -6,3 +6,4 @@ cflags-$(CONFIG_MACH_PISTACHIO) += \
-I$(srctree)/arch/mips/include/asm/mach-pistachio
load-$(CONFIG_MACH_PISTACHIO) += 0xffffffff80400000
zload-$(CONFIG_MACH_PISTACHIO) += 0xffffffff81000000
+all-$(CONFIG_MACH_PISTACHIO) := uImage.gz
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 22e9d281324d..e7d4ce6964ae 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -563,8 +563,6 @@ static int nvram_pstore_init(void)
nvram_pstore_info.buf = oops_data;
nvram_pstore_info.bufsize = oops_data_sz;

- spin_lock_init(&nvram_pstore_info.buf_lock);
-
rc = pstore_register(&nvram_pstore_info);
if (rc && (rc != -EPERM))
/* Print error only when pstore.backend == nvram */
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 72af23bacbb5..a6e3c7022245 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -107,7 +107,6 @@ void bust_spinlocks(int yes)

/*
* Find out which address space caused the exception.
- * Access register mode is impossible, ignore space == 3.
*/
static inline enum fault_type get_fault_type(struct pt_regs *regs)
{
@@ -132,6 +131,10 @@ static inline enum fault_type get_fault_type(struct pt_regs *regs)
}
return VDSO_FAULT;
}
+ if (trans_exc_code == 1) {
+ /* access register mode, not used in the kernel */
+ return USER_FAULT;
+ }
/* home space exception -> access via kernel ASCE */
return KERNEL_FAULT;
}
diff --git a/arch/x86/lib/insn-eval.c b/arch/x86/lib/insn-eval.c
index 9119d8e41f1f..87dcba101e56 100644
--- a/arch/x86/lib/insn-eval.c
+++ b/arch/x86/lib/insn-eval.c
@@ -555,7 +555,8 @@ static int get_reg_offset_16(struct insn *insn, struct pt_regs *regs,
}

/**
- * get_desc() - Obtain pointer to a segment descriptor
+ * get_desc() - Obtain contents of a segment descriptor
+ * @out: Segment descriptor contents on success
* @sel: Segment selector
*
* Given a segment selector, obtain a pointer to the segment descriptor.
@@ -563,18 +564,18 @@ static int get_reg_offset_16(struct insn *insn, struct pt_regs *regs,
*
* Returns:
*
- * Pointer to segment descriptor on success.
+ * True on success, false on failure.
*
* NULL on error.
*/
-static struct desc_struct *get_desc(unsigned short sel)
+static bool get_desc(struct desc_struct *out, unsigned short sel)
{
struct desc_ptr gdt_desc = {0, 0};
unsigned long desc_base;

#ifdef CONFIG_MODIFY_LDT_SYSCALL
if ((sel & SEGMENT_TI_MASK) == SEGMENT_LDT) {
- struct desc_struct *desc = NULL;
+ bool success = false;
struct ldt_struct *ldt;

/* Bits [15:3] contain the index of the desired entry. */
@@ -582,12 +583,14 @@ static struct desc_struct *get_desc(unsigned short sel)

mutex_lock(&current->active_mm->context.lock);
ldt = current->active_mm->context.ldt;
- if (ldt && sel < ldt->nr_entries)
- desc = &ldt->entries[sel];
+ if (ldt && sel < ldt->nr_entries) {
+ *out = ldt->entries[sel];
+ success = true;
+ }

mutex_unlock(&current->active_mm->context.lock);

- return desc;
+ return success;
}
#endif
native_store_gdt(&gdt_desc);
@@ -602,9 +605,10 @@ static struct desc_struct *get_desc(unsigned short sel)
desc_base = sel & ~(SEGMENT_RPL_MASK | SEGMENT_TI_MASK);

if (desc_base > gdt_desc.size)
- return NULL;
+ return false;

- return (struct desc_struct *)(gdt_desc.address + desc_base);
+ *out = *(struct desc_struct *)(gdt_desc.address + desc_base);
+ return true;
}

/**
@@ -626,7 +630,7 @@ static struct desc_struct *get_desc(unsigned short sel)
*/
unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx)
{
- struct desc_struct *desc;
+ struct desc_struct desc;
short sel;

sel = get_segment_selector(regs, seg_reg_idx);
@@ -664,11 +668,10 @@ unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx)
if (!sel)
return -1L;

- desc = get_desc(sel);
- if (!desc)
+ if (!get_desc(&desc, sel))
return -1L;

- return get_desc_base(desc);
+ return get_desc_base(&desc);
}

/**
@@ -690,7 +693,7 @@ unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx)
*/
static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
{
- struct desc_struct *desc;
+ struct desc_struct desc;
unsigned long limit;
short sel;

@@ -704,8 +707,7 @@ static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
if (!sel)
return 0;

- desc = get_desc(sel);
- if (!desc)
+ if (!get_desc(&desc, sel))
return 0;

/*
@@ -714,8 +716,8 @@ static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
* not tested when checking the segment limits. In practice,
* this means that the segment ends in (limit << 12) + 0xfff.
*/
- limit = get_desc_limit(desc);
- if (desc->g)
+ limit = get_desc_limit(&desc);
+ if (desc.g)
limit = (limit << 12) + 0xfff;

return limit;
@@ -739,7 +741,7 @@ static unsigned long get_seg_limit(struct pt_regs *regs, int seg_reg_idx)
*/
int insn_get_code_seg_params(struct pt_regs *regs)
{
- struct desc_struct *desc;
+ struct desc_struct desc;
short sel;

if (v8086_mode(regs))
@@ -750,8 +752,7 @@ int insn_get_code_seg_params(struct pt_regs *regs)
if (sel < 0)
return sel;

- desc = get_desc(sel);
- if (!desc)
+ if (!get_desc(&desc, sel))
return -EINVAL;

/*
@@ -759,10 +760,10 @@ int insn_get_code_seg_params(struct pt_regs *regs)
* determines whether a segment contains data or code. If this is a data
* segment, return error.
*/
- if (!(desc->type & BIT(3)))
+ if (!(desc.type & BIT(3)))
return -EINVAL;

- switch ((desc->l << 1) | desc->d) {
+ switch ((desc.l << 1) | desc.d) {
case 0: /*
* Legacy mode. CS.L=0, CS.D=0. Address and operand size are
* both 16-bit.
diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
index a7d966964c6f..513ce09e9950 100644
--- a/arch/x86/power/cpu.c
+++ b/arch/x86/power/cpu.c
@@ -299,7 +299,17 @@ int hibernate_resume_nonboot_cpu_disable(void)
* address in its instruction pointer may not be possible to resolve
* any more at that point (the page tables used by it previously may
* have been overwritten by hibernate image data).
+ *
+ * First, make sure that we wake up all the potentially disabled SMT
+ * threads which have been initially brought up and then put into
+ * mwait/cpuidle sleep.
+ * Those will be put to proper (not interfering with hibernation
+ * resume) sleep afterwards, and the resumed kernel will decide itself
+ * what to do with them.
*/
+ ret = cpuhp_smt_enable();
+ if (ret)
+ return ret;
smp_ops.play_dead = resume_play_dead;
ret = disable_nonboot_cpus();
smp_ops.play_dead = play_dead;
diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index f8e3b668d20b..c9986041a5e1 100644
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -13,6 +13,7 @@
#include <linux/suspend.h>
#include <linux/scatterlist.h>
#include <linux/kdebug.h>
+#include <linux/cpu.h>

#include <crypto/hash.h>

@@ -363,3 +364,35 @@ int arch_hibernation_header_restore(void *addr)

return 0;
}
+
+int arch_resume_nosmt(void)
+{
+ int ret = 0;
+ /*
+ * We reached this while coming out of hibernation. This means
+ * that SMT siblings are sleeping in hlt, as mwait is not safe
+ * against control transition during resume (see comment in
+ * hibernate_resume_nonboot_cpu_disable()).
+ *
+ * If the resumed kernel has SMT disabled, we have to take all the
+ * SMT siblings out of hlt, and offline them again so that they
+ * end up in mwait proper.
+ *
+ * Called with hotplug disabled.
+ */
+ cpu_hotplug_enable();
+ if (cpu_smt_control == CPU_SMT_DISABLED ||
+ cpu_smt_control == CPU_SMT_FORCE_DISABLED) {
+ enum cpuhp_smt_control old = cpu_smt_control;
+
+ ret = cpuhp_smt_enable();
+ if (ret)
+ goto out;
+ ret = cpuhp_smt_disable(old);
+ if (ret)
+ goto out;
+ }
+out:
+ cpu_hotplug_disable();
+ return ret;
+}
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index 3c5ea7cb693e..ab8faa6d6616 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -1176,7 +1176,6 @@ static int __init erst_init(void)
"Error Record Serialization Table (ERST) support is initialized.\n");

buf = kmalloc(erst_erange.size, GFP_KERNEL);
- spin_lock_init(&erst_info.buf_lock);
if (buf) {
erst_info.buf = buf + sizeof(struct cper_pstore_record);
erst_info.bufsize = erst_erange.size -
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 3e905da33bcb..5830d9417886 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -1310,11 +1310,11 @@ static void blkif_free_ring(struct blkfront_ring_info *rinfo)
}

free_shadow:
- kfree(rinfo->shadow[i].grants_used);
+ kvfree(rinfo->shadow[i].grants_used);
rinfo->shadow[i].grants_used = NULL;
- kfree(rinfo->shadow[i].indirect_grants);
+ kvfree(rinfo->shadow[i].indirect_grants);
rinfo->shadow[i].indirect_grants = NULL;
- kfree(rinfo->shadow[i].sg);
+ kvfree(rinfo->shadow[i].sg);
rinfo->shadow[i].sg = NULL;
}

@@ -1353,7 +1353,7 @@ static void blkif_free(struct blkfront_info *info, int suspend)
for (i = 0; i < info->nr_rings; i++)
blkif_free_ring(&info->rinfo[i]);

- kfree(info->rinfo);
+ kvfree(info->rinfo);
info->rinfo = NULL;
info->nr_rings = 0;
}
@@ -1914,9 +1914,9 @@ static int negotiate_mq(struct blkfront_info *info)
if (!info->nr_rings)
info->nr_rings = 1;

- info->rinfo = kcalloc(info->nr_rings,
- sizeof(struct blkfront_ring_info),
- GFP_KERNEL);
+ info->rinfo = kvcalloc(info->nr_rings,
+ sizeof(struct blkfront_ring_info),
+ GFP_KERNEL);
if (!info->rinfo) {
xenbus_dev_fatal(info->xbdev, -ENOMEM, "allocating ring_info structure");
info->nr_rings = 0;
@@ -2232,17 +2232,17 @@ static int blkfront_setup_indirect(struct blkfront_ring_info *rinfo)

for (i = 0; i < BLK_RING_SIZE(info); i++) {
rinfo->shadow[i].grants_used =
- kcalloc(grants,
- sizeof(rinfo->shadow[i].grants_used[0]),
- GFP_NOIO);
- rinfo->shadow[i].sg = kcalloc(psegs,
- sizeof(rinfo->shadow[i].sg[0]),
- GFP_NOIO);
+ kvcalloc(grants,
+ sizeof(rinfo->shadow[i].grants_used[0]),
+ GFP_NOIO);
+ rinfo->shadow[i].sg = kvcalloc(psegs,
+ sizeof(rinfo->shadow[i].sg[0]),
+ GFP_NOIO);
if (info->max_indirect_segments)
rinfo->shadow[i].indirect_grants =
- kcalloc(INDIRECT_GREFS(grants),
- sizeof(rinfo->shadow[i].indirect_grants[0]),
- GFP_NOIO);
+ kvcalloc(INDIRECT_GREFS(grants),
+ sizeof(rinfo->shadow[i].indirect_grants[0]),
+ GFP_NOIO);
if ((rinfo->shadow[i].grants_used == NULL) ||
(rinfo->shadow[i].sg == NULL) ||
(info->max_indirect_segments &&
@@ -2256,11 +2256,11 @@ static int blkfront_setup_indirect(struct blkfront_ring_info *rinfo)

out_of_memory:
for (i = 0; i < BLK_RING_SIZE(info); i++) {
- kfree(rinfo->shadow[i].grants_used);
+ kvfree(rinfo->shadow[i].grants_used);
rinfo->shadow[i].grants_used = NULL;
- kfree(rinfo->shadow[i].sg);
+ kvfree(rinfo->shadow[i].sg);
rinfo->shadow[i].sg = NULL;
- kfree(rinfo->shadow[i].indirect_grants);
+ kvfree(rinfo->shadow[i].indirect_grants);
rinfo->shadow[i].indirect_grants = NULL;
}
if (!list_empty(&rinfo->indirect_pages)) {
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index cfe87b465819..0f7d97917197 100644
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -259,8 +259,7 @@ static int efi_pstore_write(struct pstore_record *record)
efi_name[i] = name[i];

ret = efivar_entry_set_safe(efi_name, vendor, PSTORE_EFI_ATTRIBUTES,
- !pstore_cannot_block_path(record->reason),
- record->size, record->psi->buf);
+ preemptible(), record->size, record->psi->buf);

if (record->reason == KMSG_DUMP_OOPS)
efivar_run_worker();
@@ -369,7 +368,6 @@ static __init int efivars_pstore_init(void)
return -ENOMEM;

efi_pstore_info.bufsize = 1024;
- spin_lock_init(&efi_pstore_info.buf_lock);

if (pstore_register(&efi_pstore_info)) {
kfree(efi_pstore_info.buf);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index f008804f0b97..bbd927e800af 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -416,8 +416,7 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
}
}
if (req.pending & ATIF_DGPU_DISPLAY_EVENT) {
- if ((adev->flags & AMD_IS_PX) &&
- amdgpu_atpx_dgpu_req_power_for_displays()) {
+ if (adev->flags & AMD_IS_PX) {
pm_runtime_get_sync(adev->ddev->dev);
/* Just fire off a uevent and let userspace tell us what to do */
drm_helper_hpd_irq_event(adev->ddev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 5b39d1399630..5be82e4fd1da 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -37,18 +37,10 @@ static void psp_set_funcs(struct amdgpu_device *adev);
static int psp_early_init(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ struct psp_context *psp = &adev->psp;

psp_set_funcs(adev);

- return 0;
-}
-
-static int psp_sw_init(void *handle)
-{
- struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- struct psp_context *psp = &adev->psp;
- int ret;
-
switch (adev->asic_type) {
case CHIP_VEGA10:
case CHIP_VEGA12:
@@ -67,6 +59,15 @@ static int psp_sw_init(void *handle)
if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP)
return 0;

+ return 0;
+}
+
+static int psp_sw_init(void *handle)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ struct psp_context *psp = &adev->psp;
+ int ret;
+
ret = psp_init_microcode(psp);
if (ret) {
DRM_ERROR("Failed to load psp firmware!\n");
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 94f5c3646cb7..c22062cc9992 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1573,15 +1573,6 @@ int drm_atomic_helper_async_check(struct drm_device *dev,
if (old_plane_state->fb != new_plane_state->fb)
return -EINVAL;

- /*
- * FIXME: Since prepare_fb and cleanup_fb are always called on
- * the new_plane_state for async updates we need to block framebuffer
- * changes. This prevents use of a fb that's been cleaned up and
- * double cleanups from occuring.
- */
- if (old_plane_state->fb != new_plane_state->fb)
- return -EINVAL;
-
funcs = plane->helper_private;
if (!funcs->atomic_async_update)
return -EINVAL;
@@ -1612,6 +1603,8 @@ EXPORT_SYMBOL(drm_atomic_helper_async_check);
* drm_atomic_async_check() succeeds. Async commits are not supposed to swap
* the states like normal sync commits, but just do in-place changes on the
* current state.
+ *
+ * TODO: Implement full swap instead of doing in-place changes.
*/
void drm_atomic_helper_async_commit(struct drm_device *dev,
struct drm_atomic_state *state)
@@ -1622,6 +1615,9 @@ void drm_atomic_helper_async_commit(struct drm_device *dev,
int i;

for_each_new_plane_in_state(state, plane, plane_state, i) {
+ struct drm_framebuffer *new_fb = plane_state->fb;
+ struct drm_framebuffer *old_fb = plane->state->fb;
+
funcs = plane->helper_private;
funcs->atomic_async_update(plane, plane_state);

@@ -1630,11 +1626,17 @@ void drm_atomic_helper_async_commit(struct drm_device *dev,
* plane->state in-place, make sure at least common
* properties have been properly updated.
*/
- WARN_ON_ONCE(plane->state->fb != plane_state->fb);
+ WARN_ON_ONCE(plane->state->fb != new_fb);
WARN_ON_ONCE(plane->state->crtc_x != plane_state->crtc_x);
WARN_ON_ONCE(plane->state->crtc_y != plane_state->crtc_y);
WARN_ON_ONCE(plane->state->src_x != plane_state->src_x);
WARN_ON_ONCE(plane->state->src_y != plane_state->src_y);
+
+ /*
+ * Make sure the FBs have been swapped so that cleanups in the
+ * new_state performs a cleanup in the old FB.
+ */
+ WARN_ON_ONCE(plane_state->fb != old_fb);
}
}
EXPORT_SYMBOL(drm_atomic_helper_async_commit);
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index b506e3622b08..7c581f4c2b94 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -172,6 +172,25 @@ static const struct edid_quirk {
/* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/
{ "ETR", 13896, EDID_QUIRK_FORCE_8BPC },

+ /* Valve Index Headset */
+ { "VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91be, EDID_QUIRK_NON_DESKTOP },
+ { "VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP },
+
/* HTC Vive and Vive Pro VR Headsets */
{ "HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP },
{ "HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP },
@@ -193,6 +212,12 @@ static const struct edid_quirk {

/* Sony PlayStation VR Headset */
{ "SNY", 0x0704, EDID_QUIRK_NON_DESKTOP },
+
+ /* Sensics VR Headsets */
+ { "SEN", 0x1019, EDID_QUIRK_NON_DESKTOP },
+
+ /* OSVR HDK and HDK2 VR Headsets */
+ { "SVR", 0x1019, EDID_QUIRK_NON_DESKTOP },
};

/*
diff --git a/drivers/gpu/drm/gma500/cdv_intel_lvds.c b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
index de9531caaca0..9c8446184b17 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_lvds.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
@@ -594,6 +594,9 @@ void cdv_intel_lvds_init(struct drm_device *dev,
int pipe;
u8 pin;

+ if (!dev_priv->lvds_enabled_in_vbt)
+ return;
+
pin = GMBUS_PORT_PANEL;
if (!lvds_is_present_in_vbt(dev, &pin)) {
DRM_DEBUG_KMS("LVDS is not present in VBT\n");
diff --git a/drivers/gpu/drm/gma500/intel_bios.c b/drivers/gpu/drm/gma500/intel_bios.c
index 63bde4e86c6a..e019ea271ffc 100644
--- a/drivers/gpu/drm/gma500/intel_bios.c
+++ b/drivers/gpu/drm/gma500/intel_bios.c
@@ -436,6 +436,9 @@ parse_driver_features(struct drm_psb_private *dev_priv,
if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
dev_priv->edp.support = 1;

+ dev_priv->lvds_enabled_in_vbt = driver->lvds_config != 0;
+ DRM_DEBUG_KMS("LVDS VBT config bits: 0x%x\n", driver->lvds_config);
+
/* This bit means to use 96Mhz for DPLL_A or not */
if (driver->primary_lfp_id)
dev_priv->dplla_96mhz = true;
diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index 93d2f4000d2f..be3cf9b348bd 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -538,6 +538,7 @@ struct drm_psb_private {
int lvds_ssc_freq;
bool is_lvds_on;
bool is_mipi_on;
+ bool lvds_enabled_in_vbt;
u32 mipi_ctrl_display;

unsigned int core_freq;
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 542f31ce108f..40b32b4d1d98 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -2161,7 +2161,8 @@ static int emulate_ggtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off,
struct intel_gvt_gtt_pte_ops *ops = gvt->gtt.pte_ops;
unsigned long g_gtt_index = off >> info->gtt_entry_size_shift;
unsigned long gma, gfn;
- struct intel_gvt_gtt_entry e, m;
+ struct intel_gvt_gtt_entry e = {.val64 = 0, .type = GTT_TYPE_GGTT_PTE};
+ struct intel_gvt_gtt_entry m = {.val64 = 0, .type = GTT_TYPE_GGTT_PTE};
dma_addr_t dma_addr;
int ret;

@@ -2237,7 +2238,8 @@ static int emulate_ggtt_mmio_write(struct intel_vgpu *vgpu, unsigned int off,

if (ops->test_present(&e)) {
gfn = ops->get_pfn(&e);
- m = e;
+ m.val64 = e.val64;
+ m.type = e.type;

/* one PTE update may be issued in multiple writes and the
* first write may not construct a valid gfn
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5b544cb38148..16f5d2d93801 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -32,7 +32,7 @@
* macros. Do **not** mass change existing definitions just to update the style.
*
* Layout
- * ''''''
+ * ~~~~~~
*
* Keep helper macros near the top. For example, _PIPE() and friends.
*
@@ -78,7 +78,7 @@
* style. Use lower case in hexadecimal values.
*
* Naming
- * ''''''
+ * ~~~~~~
*
* Try to name registers according to the specs. If the register name changes in
* the specs from platform to another, stick to the original name.
@@ -96,7 +96,7 @@
* suffix to the name. For example, ``_SKL`` or ``_GEN8``.
*
* Examples
- * ''''''''
+ * ~~~~~~~~
*
* (Note that the values in the example are indented using spaces instead of
* TABs to avoid misalignment in generated documentation. Use TABs in the
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 01d1d2088f04..728a20e1f638 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -1267,6 +1267,10 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv)
if (!HAS_FBC(dev_priv))
return 0;

+ /* https://bugs.freedesktop.org/show_bug.cgi?id=108085 */
+ if (IS_GEMINILAKE(dev_priv))
+ return 0;
+
if (IS_BROADWELL(dev_priv) || INTEL_GEN(dev_priv) >= 9)
return 1;

diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index 4bcdeaf8d98f..c44bb37e434c 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -37,7 +37,7 @@
* costly and simplifies things. We can revisit this in the future.
*
* Layout
- * ''''''
+ * ~~~~~~
*
* Keep things in this file ordered by WA type, as per the above (context, GT,
* display, register whitelist, batchbuffer). Then, inside each type, keep the
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
index 273cbbe27c2e..1ddf07514de6 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c
@@ -503,6 +503,8 @@ static int mdp5_plane_atomic_async_check(struct drm_plane *plane,
static void mdp5_plane_atomic_async_update(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
+ struct drm_framebuffer *old_fb = plane->state->fb;
+
plane->state->src_x = new_state->src_x;
plane->state->src_y = new_state->src_y;
plane->state->crtc_x = new_state->crtc_x;
@@ -525,6 +527,8 @@ static void mdp5_plane_atomic_async_update(struct drm_plane *plane,

*to_mdp5_plane_state(plane->state) =
*to_mdp5_plane_state(new_state);
+
+ new_state->fb = old_fb;
}

static const struct drm_plane_helper_funcs mdp5_plane_helper_funcs = {
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 4b75ad40dd80..00d9d77f583a 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -16,10 +16,21 @@ config DRM_NOUVEAU
select INPUT if ACPI && X86
select THERMAL if ACPI && X86
select ACPI_VIDEO if ACPI && X86
- select DRM_VM
help
Choose this option for open-source NVIDIA support.

+config NOUVEAU_LEGACY_CTX_SUPPORT
+ bool "Nouveau legacy context support"
+ depends on DRM_NOUVEAU
+ select DRM_VM
+ default y
+ help
+ There was a version of the nouveau DDX that relied on legacy
+ ctx ioctls not erroring out. But that was back in time a long
+ ways, so offer a way to disable it now. For uapi compat with
+ old nouveau ddx this should be on by default, but modern distros
+ should consider turning it off.
+
config NOUVEAU_PLATFORM_DRIVER
bool "Nouveau (NVIDIA) SoC GPUs"
depends on DRM_NOUVEAU && ARCH_TEGRA
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 74d2283f2c28..2b7a54cc3c9e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -1015,8 +1015,11 @@ nouveau_driver_fops = {
static struct drm_driver
driver_stub = {
.driver_features =
- DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER |
- DRIVER_KMS_LEGACY_CONTEXT,
+ DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER
+#if defined(CONFIG_NOUVEAU_LEGACY_CTX_SUPPORT)
+ | DRIVER_KMS_LEGACY_CONTEXT
+#endif
+ ,

.load = nouveau_drm_load,
.unload = nouveau_drm_unload,
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 9d3ac8b981da..d8e2d7b3b836 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -921,12 +921,12 @@ static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
ref_div_max = max(min(100 / post_div, ref_div_max), 1u);

/* get matching reference and feedback divider */
- *ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
+ *ref_div = min(max(den/post_div, 1u), ref_div_max);
*fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);

/* limit fb divider to its maximum */
if (*fb_div > fb_div_max) {
- *ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
+ *ref_div = (*ref_div * fb_div_max)/(*fb_div);
*fb_div = fb_div_max;
}
}
diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index 0c51c0ffdda9..8d6b6eeef71c 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -718,11 +718,16 @@ static const struct i2c_algorithm xiic_algorithm = {
.functionality = xiic_func,
};

+static const struct i2c_adapter_quirks xiic_quirks = {
+ .max_read_len = 255,
+};
+
static const struct i2c_adapter xiic_adapter = {
.owner = THIS_MODULE,
.name = DRIVER_NAME,
.class = I2C_CLASS_DEPRECATED,
.algo = &xiic_algorithm,
+ .quirks = &xiic_quirks,
};


diff --git a/drivers/irqchip/irq-ath79-misc.c b/drivers/irqchip/irq-ath79-misc.c
index 0390603170b4..aa7290784636 100644
--- a/drivers/irqchip/irq-ath79-misc.c
+++ b/drivers/irqchip/irq-ath79-misc.c
@@ -22,15 +22,6 @@
#define AR71XX_RESET_REG_MISC_INT_ENABLE 4

#define ATH79_MISC_IRQ_COUNT 32
-#define ATH79_MISC_PERF_IRQ 5
-
-static int ath79_perfcount_irq;
-
-int get_c0_perfcount_int(void)
-{
- return ath79_perfcount_irq;
-}
-EXPORT_SYMBOL_GPL(get_c0_perfcount_int);

static void ath79_misc_irq_handler(struct irq_desc *desc)
{
@@ -122,8 +113,6 @@ static void __init ath79_misc_intc_domain_init(
{
void __iomem *base = domain->host_data;

- ath79_perfcount_irq = irq_create_mapping(domain, ATH79_MISC_PERF_IRQ);
-
/* Disable and clear all interrupts */
__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE);
__raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS);
diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c
index 8c1b63a4337b..d2098b4d2945 100644
--- a/drivers/misc/genwqe/card_dev.c
+++ b/drivers/misc/genwqe/card_dev.c
@@ -780,6 +780,8 @@ static int genwqe_pin_mem(struct genwqe_file *cfile, struct genwqe_mem *m)

if ((m->addr == 0x0) || (m->size == 0))
return -EINVAL;
+ if (m->size > ULONG_MAX - PAGE_SIZE - (m->addr & ~PAGE_MASK))
+ return -EINVAL;

map_addr = (m->addr & PAGE_MASK);
map_size = round_up(m->size + (m->addr & ~PAGE_MASK), PAGE_SIZE);
diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c
index f4f8ab602442..f68435df76d4 100644
--- a/drivers/misc/genwqe/card_utils.c
+++ b/drivers/misc/genwqe/card_utils.c
@@ -587,6 +587,10 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, void *uaddr,
/* determine space needed for page_list. */
data = (unsigned long)uaddr;
offs = offset_in_page(data);
+ if (size > ULONG_MAX - PAGE_SIZE - offs) {
+ m->size = 0; /* mark unused and not added */
+ return -EINVAL;
+ }
m->nr_pages = DIV_ROUND_UP(offs + size, PAGE_SIZE);

m->page_list = kcalloc(m->nr_pages,
diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c
index 98f6b9c4b684..d16b57081c95 100644
--- a/drivers/mtd/nand/spi/macronix.c
+++ b/drivers/mtd/nand/spi/macronix.c
@@ -10,6 +10,7 @@
#include <linux/mtd/spinand.h>

#define SPINAND_MFR_MACRONIX 0xC2
+#define MACRONIX_ECCSR_MASK 0x0F

static SPINAND_OP_VARIANTS(read_cache_variants,
SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
@@ -55,7 +56,12 @@ static int mx35lf1ge4ab_get_eccsr(struct spinand_device *spinand, u8 *eccsr)
SPI_MEM_OP_DUMMY(1, 1),
SPI_MEM_OP_DATA_IN(1, eccsr, 1));

- return spi_mem_exec_op(spinand->spimem, &op);
+ int ret = spi_mem_exec_op(spinand->spimem, &op);
+ if (ret)
+ return ret;
+
+ *eccsr &= MACRONIX_ECCSR_MASK;
+ return 0;
}

static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand,
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 59212d3d9587..df5b74f289e1 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -1310,8 +1310,8 @@ static void mvpp2_ethtool_get_strings(struct net_device *netdev, u32 sset,
int i;

for (i = 0; i < ARRAY_SIZE(mvpp2_ethtool_regs); i++)
- memcpy(data + i * ETH_GSTRING_LEN,
- &mvpp2_ethtool_regs[i].string, ETH_GSTRING_LEN);
+ strscpy(data + i * ETH_GSTRING_LEN,
+ mvpp2_ethtool_regs[i].string, ETH_GSTRING_LEN);
}
}

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index d290f0787dfb..94c59939a8cf 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -2010,6 +2010,8 @@ static int mlx4_en_set_tunable(struct net_device *dev,
return ret;
}

+#define MLX4_EEPROM_PAGE_LEN 256
+
static int mlx4_en_get_module_info(struct net_device *dev,
struct ethtool_modinfo *modinfo)
{
@@ -2044,7 +2046,7 @@ static int mlx4_en_get_module_info(struct net_device *dev,
break;
case MLX4_MODULE_ID_SFP:
modinfo->type = ETH_MODULE_SFF_8472;
- modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
+ modinfo->eeprom_len = MLX4_EEPROM_PAGE_LEN;
break;
default:
return -EINVAL;
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index 10fcc22f4590..ba6ac31a339d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -2077,11 +2077,6 @@ int mlx4_get_module_info(struct mlx4_dev *dev, u8 port,
size -= offset + size - I2C_PAGE_SIZE;

i2c_addr = I2C_ADDR_LOW;
- if (offset >= I2C_PAGE_SIZE) {
- /* Reset offset to high page */
- i2c_addr = I2C_ADDR_HIGH;
- offset -= I2C_PAGE_SIZE;
- }

cable_info = (struct mlx4_cable_info *)inmad->data;
cable_info->dev_mem_address = cpu_to_be16(offset);
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 832bce07c385..1afed85550c0 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -2978,7 +2978,7 @@ static void cpsw_get_ringparam(struct net_device *ndev,
struct cpsw_common *cpsw = priv->cpsw;

/* not supported */
- ering->tx_max_pending = 0;
+ ering->tx_max_pending = descs_pool_size - CPSW_MAX_QUEUES;
ering->tx_pending = cpdma_get_num_tx_descs(cpsw->dma);
ering->rx_max_pending = descs_pool_size - CPSW_MAX_QUEUES;
ering->rx_pending = cpdma_get_num_rx_descs(cpsw->dma);
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 68c8fbf099f8..8807a806cc47 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -280,6 +280,7 @@ static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
{
struct i2c_msg msgs[2];
u8 bus_addr = a2 ? 0x51 : 0x50;
+ size_t this_len;
int ret;

msgs[0].addr = bus_addr;
@@ -291,11 +292,26 @@ static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
msgs[1].len = len;
msgs[1].buf = buf;

- ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs));
- if (ret < 0)
- return ret;
+ while (len) {
+ this_len = len;
+ if (this_len > 16)
+ this_len = 16;

- return ret == ARRAY_SIZE(msgs) ? len : 0;
+ msgs[1].len = this_len;
+
+ ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs));
+ if (ret < 0)
+ return ret;
+
+ if (ret != ARRAY_SIZE(msgs))
+ break;
+
+ msgs[1].buf += this_len;
+ dev_addr += this_len;
+ len -= this_len;
+ }
+
+ return msgs[1].buf - (u8 *)buf;
}

static int sfp_i2c_write(struct sfp *sfp, bool a2, u8 dev_addr, void *buf,
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 614823617b8b..b7b2e811d547 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -565,8 +565,6 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
/* We currently only support kernel addresses */
BUG_ON(sid != KERNEL_SPACE);

- mtsp(sid,1);
-
/*
** WORD 1 - low order word
** "hints" parm includes the VALID bit!
@@ -597,7 +595,7 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
** Grab virtual index [0:11]
** Deposit virt_idx bits into I/O PDIR word
*/
- asm volatile ("lci %%r0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba));
+ asm volatile ("lci %%r0(%1), %0" : "=r" (ci) : "r" (vba));
asm volatile ("extru %1,19,12,%0" : "+r" (ci) : "r" (ci));
asm volatile ("depw %1,15,12,%0" : "+r" (pa) : "r" (ci));

diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 11de0eccf968..6dd1780a5885 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -575,8 +575,7 @@ sba_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
pa = virt_to_phys(vba);
pa &= IOVP_MASK;

- mtsp(sid,1);
- asm("lci 0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba));
+ asm("lci 0(%1), %0" : "=r" (ci) : "r" (vba));
pa |= (ci >> PAGE_SHIFT) & 0xff; /* move CI (8 bits) into lowest byte */

pa |= SBA_PDIR_VALID_BIT; /* set "valid" bit */
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f0b354b65a0e..8dbeb14a1e3a 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -130,9 +130,6 @@ static void uart_start(struct tty_struct *tty)
struct uart_port *port;
unsigned long flags;

- if (!state)
- return;
-
port = uart_port_lock(state, flags);
__uart_start(tty);
uart_port_unlock(port, flags);
@@ -730,9 +727,6 @@ static void uart_unthrottle(struct tty_struct *tty)
upstat_t mask = UPSTAT_SYNC_FIFO;
struct uart_port *port;

- if (!state)
- return;
-
port = uart_port_ref(state);
if (!port)
return;
@@ -1708,6 +1702,16 @@ static void uart_dtr_rts(struct tty_port *port, int raise)
uart_port_deref(uport);
}

+static int uart_install(struct tty_driver *driver, struct tty_struct *tty)
+{
+ struct uart_driver *drv = driver->driver_state;
+ struct uart_state *state = drv->state + tty->index;
+
+ tty->driver_data = state;
+
+ return tty_standard_install(driver, tty);
+}
+
/*
* Calls to uart_open are serialised by the tty_lock in
* drivers/tty/tty_io.c:tty_open()
@@ -1720,11 +1724,8 @@ static void uart_dtr_rts(struct tty_port *port, int raise)
*/
static int uart_open(struct tty_struct *tty, struct file *filp)
{
- struct uart_driver *drv = tty->driver->driver_state;
- int retval, line = tty->index;
- struct uart_state *state = drv->state + line;
-
- tty->driver_data = state;
+ struct uart_state *state = tty->driver_data;
+ int retval;

retval = tty_port_open(&state->port, tty, filp);
if (retval > 0)
@@ -2409,6 +2410,7 @@ static void uart_poll_put_char(struct tty_driver *driver, int line, char ch)
#endif

static const struct tty_operations uart_ops = {
+ .install = uart_install,
.open = uart_open,
.close = uart_close,
.write = uart_write,
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 59e8bb72dc14..9a22aa580fe7 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2981,7 +2981,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
offset + length > i_size_read(inode)) {
err = inode_newsize_ok(inode, offset + length);
if (err)
- return err;
+ goto out;
}

if (!(mode & FALLOC_FL_KEEP_SIZE))
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 580e37bc3fe2..53cf8599a46e 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6850,7 +6850,6 @@ struct nfs4_lock_waiter {
struct task_struct *task;
struct inode *inode;
struct nfs_lowner *owner;
- bool notified;
};

static int
@@ -6872,13 +6871,13 @@ nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, vo
/* Make sure it's for the right inode */
if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh))
return 0;
-
- waiter->notified = true;
}

/* override "private" so we can use default_wake_function */
wait->private = waiter->task;
- ret = autoremove_wake_function(wait, mode, flags, key);
+ ret = woken_wake_function(wait, mode, flags, key);
+ if (ret)
+ list_del_init(&wait->entry);
wait->private = waiter;
return ret;
}
@@ -6887,7 +6886,6 @@ static int
nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
int status = -ERESTARTSYS;
- unsigned long flags;
struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner;
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs_client *clp = server->nfs_client;
@@ -6897,8 +6895,7 @@ nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
.s_dev = server->s_dev };
struct nfs4_lock_waiter waiter = { .task = current,
.inode = state->inode,
- .owner = &owner,
- .notified = false };
+ .owner = &owner};
wait_queue_entry_t wait;

/* Don't bother with waitqueue if we don't expect a callback */
@@ -6908,27 +6905,22 @@ nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
init_wait(&wait);
wait.private = &waiter;
wait.func = nfs4_wake_lock_waiter;
- add_wait_queue(q, &wait);

while(!signalled()) {
- waiter.notified = false;
+ add_wait_queue(q, &wait);
status = nfs4_proc_setlk(state, cmd, request);
- if ((status != -EAGAIN) || IS_SETLK(cmd))
+ if ((status != -EAGAIN) || IS_SETLK(cmd)) {
+ finish_wait(q, &wait);
break;
-
- status = -ERESTARTSYS;
- spin_lock_irqsave(&q->lock, flags);
- if (waiter.notified) {
- spin_unlock_irqrestore(&q->lock, flags);
- continue;
}
- set_current_state(TASK_INTERRUPTIBLE);
- spin_unlock_irqrestore(&q->lock, flags);

- freezable_schedule_timeout(NFS4_LOCK_MAXTIMEOUT);
+ status = -ERESTARTSYS;
+ freezer_do_not_count();
+ wait_woken(&wait, TASK_INTERRUPTIBLE, NFS4_LOCK_MAXTIMEOUT);
+ freezer_count();
+ finish_wait(q, &wait);
}

- finish_wait(q, &wait);
return status;
}
#else /* !CONFIG_NFS_V4_1 */
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index b821054ca3ed..4bae3f4fe829 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -124,26 +124,27 @@ static const char *get_reason_str(enum kmsg_dump_reason reason)
}
}

-bool pstore_cannot_block_path(enum kmsg_dump_reason reason)
+/*
+ * Should pstore_dump() wait for a concurrent pstore_dump()? If
+ * not, the current pstore_dump() will report a failure to dump
+ * and return.
+ */
+static bool pstore_cannot_wait(enum kmsg_dump_reason reason)
{
- /*
- * In case of NMI path, pstore shouldn't be blocked
- * regardless of reason.
- */
+ /* In NMI path, pstore shouldn't block regardless of reason. */
if (in_nmi())
return true;

switch (reason) {
/* In panic case, other cpus are stopped by smp_send_stop(). */
case KMSG_DUMP_PANIC:
- /* Emergency restart shouldn't be blocked by spin lock. */
+ /* Emergency restart shouldn't be blocked. */
case KMSG_DUMP_EMERG:
return true;
default:
return false;
}
}
-EXPORT_SYMBOL_GPL(pstore_cannot_block_path);

#if IS_ENABLED(CONFIG_PSTORE_DEFLATE_COMPRESS)
static int zbufsize_deflate(size_t size)
@@ -323,8 +324,10 @@ static void allocate_buf_for_compression(void)

static void free_buf_for_compression(void)
{
- if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && tfm)
+ if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && tfm) {
crypto_free_comp(tfm);
+ tfm = NULL;
+ }
kfree(big_oops_buf);
big_oops_buf = NULL;
big_oops_buf_sz = 0;
@@ -378,23 +381,23 @@ static void pstore_dump(struct kmsg_dumper *dumper,
unsigned long total = 0;
const char *why;
unsigned int part = 1;
- unsigned long flags = 0;
- int is_locked;
int ret;

why = get_reason_str(reason);

- if (pstore_cannot_block_path(reason)) {
- is_locked = spin_trylock_irqsave(&psinfo->buf_lock, flags);
- if (!is_locked) {
- pr_err("pstore dump routine blocked in %s path, may corrupt error record\n"
- , in_nmi() ? "NMI" : why);
+ if (down_trylock(&psinfo->buf_lock)) {
+ /* Failed to acquire lock: give up if we cannot wait. */
+ if (pstore_cannot_wait(reason)) {
+ pr_err("dump skipped in %s path: may corrupt error record\n",
+ in_nmi() ? "NMI" : why);
+ return;
+ }
+ if (down_interruptible(&psinfo->buf_lock)) {
+ pr_err("could not grab semaphore?!\n");
return;
}
- } else {
- spin_lock_irqsave(&psinfo->buf_lock, flags);
- is_locked = 1;
}
+
oopscount++;
while (total < kmsg_bytes) {
char *dst;
@@ -411,7 +414,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
record.part = part;
record.buf = psinfo->buf;

- if (big_oops_buf && is_locked) {
+ if (big_oops_buf) {
dst = big_oops_buf;
dst_size = big_oops_buf_sz;
} else {
@@ -429,7 +432,7 @@ static void pstore_dump(struct kmsg_dumper *dumper,
dst_size, &dump_size))
break;

- if (big_oops_buf && is_locked) {
+ if (big_oops_buf) {
zipped_len = pstore_compress(dst, psinfo->buf,
header_size + dump_size,
psinfo->bufsize);
@@ -452,8 +455,8 @@ static void pstore_dump(struct kmsg_dumper *dumper,
total += record.size;
part++;
}
- if (is_locked)
- spin_unlock_irqrestore(&psinfo->buf_lock, flags);
+
+ up(&psinfo->buf_lock);
}

static struct kmsg_dumper pstore_dumper = {
@@ -476,31 +479,14 @@ static void pstore_unregister_kmsg(void)
#ifdef CONFIG_PSTORE_CONSOLE
static void pstore_console_write(struct console *con, const char *s, unsigned c)
{
- const char *e = s + c;
+ struct pstore_record record;

- while (s < e) {
- struct pstore_record record;
- unsigned long flags;
-
- pstore_record_init(&record, psinfo);
- record.type = PSTORE_TYPE_CONSOLE;
+ pstore_record_init(&record, psinfo);
+ record.type = PSTORE_TYPE_CONSOLE;

- if (c > psinfo->bufsize)
- c = psinfo->bufsize;
-
- if (oops_in_progress) {
- if (!spin_trylock_irqsave(&psinfo->buf_lock, flags))
- break;
- } else {
- spin_lock_irqsave(&psinfo->buf_lock, flags);
- }
- record.buf = (char *)s;
- record.size = c;
- psinfo->write(&record);
- spin_unlock_irqrestore(&psinfo->buf_lock, flags);
- s += c;
- c = e - s;
- }
+ record.buf = (char *)s;
+ record.size = c;
+ psinfo->write(&record);
}

static struct console pstore_console = {
@@ -589,6 +575,7 @@ int pstore_register(struct pstore_info *psi)
psi->write_user = pstore_write_user_compat;
psinfo = psi;
mutex_init(&psinfo->read_mutex);
+ sema_init(&psinfo->buf_lock, 1);
spin_unlock(&pstore_lock);

if (owner && !try_module_get(owner)) {
@@ -596,7 +583,8 @@ int pstore_register(struct pstore_info *psi)
return -EINVAL;
}

- allocate_buf_for_compression();
+ if (psi->flags & PSTORE_FLAGS_DMESG)
+ allocate_buf_for_compression();

if (pstore_is_mounted())
pstore_get_records(0);
diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index 44ed6b193d2e..316c16463b20 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -803,27 +803,36 @@ static int ramoops_probe(struct platform_device *pdev)

cxt->pstore.data = cxt;
/*
- * Since bufsize is only used for dmesg crash dumps, it
- * must match the size of the dprz record (after PRZ header
- * and ECC bytes have been accounted for).
+ * Prepare frontend flags based on which areas are initialized.
+ * For ramoops_init_przs() cases, the "max count" variable tells
+ * if there are regions present. For ramoops_init_prz() cases,
+ * the single region size is how to check.
*/
- cxt->pstore.bufsize = cxt->dprzs[0]->buffer_size;
- cxt->pstore.buf = kzalloc(cxt->pstore.bufsize, GFP_KERNEL);
- if (!cxt->pstore.buf) {
- pr_err("cannot allocate pstore crash dump buffer\n");
- err = -ENOMEM;
- goto fail_clear;
- }
- spin_lock_init(&cxt->pstore.buf_lock);
-
- cxt->pstore.flags = PSTORE_FLAGS_DMESG;
+ cxt->pstore.flags = 0;
+ if (cxt->max_dump_cnt)
+ cxt->pstore.flags |= PSTORE_FLAGS_DMESG;
if (cxt->console_size)
cxt->pstore.flags |= PSTORE_FLAGS_CONSOLE;
- if (cxt->ftrace_size)
+ if (cxt->max_ftrace_cnt)
cxt->pstore.flags |= PSTORE_FLAGS_FTRACE;
if (cxt->pmsg_size)
cxt->pstore.flags |= PSTORE_FLAGS_PMSG;

+ /*
+ * Since bufsize is only used for dmesg crash dumps, it
+ * must match the size of the dprz record (after PRZ header
+ * and ECC bytes have been accounted for).
+ */
+ if (cxt->pstore.flags & PSTORE_FLAGS_DMESG) {
+ cxt->pstore.bufsize = cxt->dprzs[0]->buffer_size;
+ cxt->pstore.buf = kzalloc(cxt->pstore.bufsize, GFP_KERNEL);
+ if (!cxt->pstore.buf) {
+ pr_err("cannot allocate pstore crash dump buffer\n");
+ err = -ENOMEM;
+ goto fail_clear;
+ }
+ }
+
err = pstore_register(&cxt->pstore);
if (err) {
pr_err("registering with pstore failed\n");
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 61142aa0ab23..0eb3372d0311 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -1174,6 +1174,14 @@ struct drm_plane_helper_funcs {
* current one with the new plane configurations in the new
* plane_state.
*
+ * Drivers should also swap the framebuffers between current plane
+ * state (&drm_plane.state) and new_state.
+ * This is required since cleanup for async commits is performed on
+ * the new state, rather than old state like for traditional commits.
+ * Since we want to give up the reference on the current (old) fb
+ * instead of our brand new one, swap them in the driver during the
+ * async commit.
+ *
* FIXME:
* - It only works for single plane updates
* - Async Pageflips are not supported yet
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 57ae83c4d5f4..006f69f9277b 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -183,10 +183,14 @@ enum cpuhp_smt_control {
extern enum cpuhp_smt_control cpu_smt_control;
extern void cpu_smt_disable(bool force);
extern void cpu_smt_check_topology(void);
+extern int cpuhp_smt_enable(void);
+extern int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval);
#else
# define cpu_smt_control (CPU_SMT_ENABLED)
static inline void cpu_smt_disable(bool force) { }
static inline void cpu_smt_check_topology(void) { }
+static inline int cpuhp_smt_enable(void) { return 0; }
+static inline int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval) { return 0; }
#endif

/*
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index 30fcec375a3a..de9093d6e660 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -26,7 +26,7 @@
#include <linux/errno.h>
#include <linux/kmsg_dump.h>
#include <linux/mutex.h>
-#include <linux/spinlock.h>
+#include <linux/semaphore.h>
#include <linux/time.h>
#include <linux/types.h>

@@ -88,7 +88,7 @@ struct pstore_record {
* @owner: module which is repsonsible for this backend driver
* @name: name of the backend driver
*
- * @buf_lock: spinlock to serialize access to @buf
+ * @buf_lock: semaphore to serialize access to @buf
* @buf: preallocated crash dump buffer
* @bufsize: size of @buf available for crash dump bytes (must match
* smallest number of bytes available for writing to a
@@ -173,7 +173,7 @@ struct pstore_info {
struct module *owner;
char *name;

- spinlock_t buf_lock;
+ struct semaphore buf_lock;
char *buf;
size_t bufsize;

@@ -199,7 +199,6 @@ struct pstore_info {

extern int pstore_register(struct pstore_info *);
extern void pstore_unregister(struct pstore_info *);
-extern bool pstore_cannot_block_path(enum kmsg_dump_reason reason);

struct pstore_ftrace_record {
unsigned long ip;
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 75e5b393cf44..e102c5bccbb9 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -78,14 +78,12 @@ void synchronize_rcu(void);

static inline void __rcu_read_lock(void)
{
- if (IS_ENABLED(CONFIG_PREEMPT_COUNT))
- preempt_disable();
+ preempt_disable();
}

static inline void __rcu_read_unlock(void)
{
- if (IS_ENABLED(CONFIG_PREEMPT_COUNT))
- preempt_enable();
+ preempt_enable();
}

static inline void synchronize_rcu(void)
diff --git a/include/net/arp.h b/include/net/arp.h
index 977aabfcdc03..c8f580a0e6b1 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -18,6 +18,7 @@ static inline u32 arp_hashfn(const void *pkey, const struct net_device *dev, u32
return val * hash_rnd[0];
}

+#ifdef CONFIG_INET
static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key)
{
if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))
@@ -25,6 +26,13 @@ static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev

return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);
}
+#else
+static inline
+struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key)
+{
+ return NULL;
+}
+#endif

static inline struct neighbour *__ipv4_neigh_lookup(struct net_device *dev, u32 key)
{
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 983f7a1a3f1d..62c936230cc8 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -260,8 +260,7 @@ static inline u32 rt6_get_cookie(const struct rt6_info *rt)
rcu_read_lock();

from = rcu_dereference(rt->from);
- if (from && (rt->rt6i_flags & RTF_PCPU ||
- unlikely(!list_empty(&rt->rt6i_uncached))))
+ if (from)
fib6_get_cookie_safe(from, &cookie);

rcu_read_unlock();
diff --git a/include/net/tls.h b/include/net/tls.h
index c423b7d0b6ab..954110575891 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -161,6 +161,10 @@ enum {
TLS_PENDING_CLOSED_RECORD
};

+enum tls_context_flags {
+ TLS_RX_SYNC_RUNNING = 0,
+};
+
struct cipher_context {
u16 prepend_size;
u16 tag_size;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 7f5634ce8e88..4671c9150d4d 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -942,7 +942,7 @@ struct drm_i915_gem_execbuffer2 {
* struct drm_i915_gem_exec_fence *fences.
*/
__u64 cliprects_ptr;
-#define I915_EXEC_RING_MASK (7<<0)
+#define I915_EXEC_RING_MASK (0x3f)
#define I915_EXEC_DEFAULT (0<<0)
#define I915_EXEC_RENDER (1<<0)
#define I915_EXEC_BSD (2<<0)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index bc6c880a093f..5d65eae893bd 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -2035,7 +2035,7 @@ static void cpuhp_online_cpu_device(unsigned int cpu)
kobject_uevent(&dev->kobj, KOBJ_ONLINE);
}

-static int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
+int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
{
int cpu, ret = 0;

@@ -2069,7 +2069,7 @@ static int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval)
return ret;
}

-static int cpuhp_smt_enable(void)
+int cpuhp_smt_enable(void)
{
int cpu, ret = 0;

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index abef759de7c8..f5ce9f7ec132 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -258,6 +258,11 @@ void swsusp_show_speed(ktime_t start, ktime_t stop,
(kps % 1000) / 10);
}

+__weak int arch_resume_nosmt(void)
+{
+ return 0;
+}
+
/**
* create_image - Create a hibernation image.
* @platform_mode: Whether or not to use the platform driver.
@@ -325,6 +330,10 @@ static int create_image(int platform_mode)
Enable_cpus:
enable_nonboot_cpus();

+ /* Allow architectures to do nosmt-specific post-resume dances */
+ if (!in_suspend)
+ error = arch_resume_nosmt();
+
Platform_finish:
platform_finish(platform_mode);

diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 7cab9a9869ac..fd48a15a0710 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -223,30 +223,30 @@ static ssize_t config_show(struct device *dev,

mutex_lock(&test_fw_mutex);

- len += snprintf(buf, PAGE_SIZE,
+ len += scnprintf(buf, PAGE_SIZE - len,
"Custom trigger configuration for: %s\n",
dev_name(dev));

if (test_fw_config->name)
- len += snprintf(buf+len, PAGE_SIZE,
+ len += scnprintf(buf+len, PAGE_SIZE - len,
"name:\t%s\n",
test_fw_config->name);
else
- len += snprintf(buf+len, PAGE_SIZE,
+ len += scnprintf(buf+len, PAGE_SIZE - len,
"name:\tEMTPY\n");

- len += snprintf(buf+len, PAGE_SIZE,
+ len += scnprintf(buf+len, PAGE_SIZE - len,
"num_requests:\t%u\n", test_fw_config->num_requests);

- len += snprintf(buf+len, PAGE_SIZE,
+ len += scnprintf(buf+len, PAGE_SIZE - len,
"send_uevent:\t\t%s\n",
test_fw_config->send_uevent ?
"FW_ACTION_HOTPLUG" :
"FW_ACTION_NOHOTPLUG");
- len += snprintf(buf+len, PAGE_SIZE,
+ len += scnprintf(buf+len, PAGE_SIZE - len,
"sync_direct:\t\t%s\n",
test_fw_config->sync_direct ? "true" : "false");
- len += snprintf(buf+len, PAGE_SIZE,
+ len += scnprintf(buf+len, PAGE_SIZE - len,
"read_fw_idx:\t%u\n", test_fw_config->read_fw_idx);

mutex_unlock(&test_fw_mutex);
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 7cc97f43f138..996813f345d5 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -880,8 +880,13 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
if (rc >= 0)
info.n_priv_flags = rc;
}
- if (ops->get_regs_len)
- info.regdump_len = ops->get_regs_len(dev);
+ if (ops->get_regs_len) {
+ int ret = ops->get_regs_len(dev);
+
+ if (ret > 0)
+ info.regdump_len = ret;
+ }
+
if (ops->get_eeprom_len)
info.eedump_len = ops->get_eeprom_len(dev);

@@ -1424,6 +1429,9 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
return -EFAULT;

reglen = ops->get_regs_len(dev);
+ if (reglen <= 0)
+ return reglen;
+
if (regs.len > reglen)
regs.len = reglen;

@@ -1434,13 +1442,16 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
return -ENOMEM;
}

+ if (regs.len < reglen)
+ reglen = regs.len;
+
ops->get_regs(dev, &regs, regbuf);

ret = -EFAULT;
if (copy_to_user(useraddr, &regs, sizeof(regs)))
goto out;
useraddr += offsetof(struct ethtool_regs, data);
- if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
+ if (copy_to_user(useraddr, regbuf, reglen))
goto out;
ret = 0;

diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index 338147b14d0e..0ff3953f64aa 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -756,9 +756,9 @@ int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh,
if (err)
goto errout;

- if (rule_exists(ops, frh, tb, rule)) {
- if (nlh->nlmsg_flags & NLM_F_EXCL)
- err = -EEXIST;
+ if ((nlh->nlmsg_flags & NLM_F_EXCL) &&
+ rule_exists(ops, frh, tb, rule)) {
+ err = -EEXIST;
goto errout_free;
}

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 4e07824eec5e..4e4ac77c6816 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -30,6 +30,7 @@
#include <linux/times.h>
#include <net/net_namespace.h>
#include <net/neighbour.h>
+#include <net/arp.h>
#include <net/dst.h>
#include <net/sock.h>
#include <net/netevent.h>
@@ -2536,7 +2537,13 @@ int neigh_xmit(int index, struct net_device *dev,
if (!tbl)
goto out;
rcu_read_lock_bh();
- neigh = __neigh_lookup_noref(tbl, addr, dev);
+ if (index == NEIGH_ARP_TABLE) {
+ u32 key = *((u32 *)addr);
+
+ neigh = __ipv4_neigh_lookup_noref(dev, key);
+ } else {
+ neigh = __neigh_lookup_noref(tbl, addr, dev);
+ }
if (!neigh)
neigh = __neigh_create(tbl, addr, dev, false);
err = PTR_ERR(neigh);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 7f6938405fa1..092fa3d75b32 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3065,7 +3065,13 @@ static int pktgen_wait_thread_run(struct pktgen_thread *t)
{
while (thread_is_running(t)) {

+ /* note: 't' will still be around even after the unlock/lock
+ * cycle because pktgen_thread threads are only cleared at
+ * net exit
+ */
+ mutex_unlock(&pktgen_thread_lock);
msleep_interruptible(100);
+ mutex_lock(&pktgen_thread_lock);

if (signal_pending(current))
goto signal;
@@ -3080,6 +3086,10 @@ static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
struct pktgen_thread *t;
int sig = 1;

+ /* prevent from racing with rmmod */
+ if (!try_module_get(THIS_MODULE))
+ return sig;
+
mutex_lock(&pktgen_thread_lock);

list_for_each_entry(t, &pn->pktgen_threads, th_list) {
@@ -3093,6 +3103,7 @@ static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
t->control |= (T_STOP);

mutex_unlock(&pktgen_thread_lock);
+ module_put(THIS_MODULE);
return sig;
}

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 40bf19f7ae1a..232581c140a0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1960,7 +1960,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
u32 itag = 0;
struct rtable *rth;
struct flowi4 fl4;
- bool do_cache;
+ bool do_cache = true;

/* IP on this device is disabled. */

@@ -2037,6 +2037,9 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
if (res->type == RTN_BROADCAST) {
if (IN_DEV_BFORWARD(in_dev))
goto make_route;
+ /* not do cache if bc_forwarding is enabled */
+ if (IPV4_DEVCONF_ALL(net, BC_FORWARDING))
+ do_cache = false;
goto brd_input;
}

@@ -2074,16 +2077,13 @@ out: return err;
RT_CACHE_STAT_INC(in_brd);

local_input:
- do_cache = false;
- if (res->fi) {
- if (!itag) {
- rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
- if (rt_cache_valid(rth)) {
- skb_dst_set_noref(skb, &rth->dst);
- err = 0;
- goto out;
- }
- do_cache = true;
+ do_cache &= res->fi && !itag;
+ if (do_cache) {
+ rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input);
+ if (rt_cache_valid(rth)) {
+ skb_dst_set_noref(skb, &rth->dst);
+ err = 0;
+ goto out;
}
}

diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 5833d4af7311..4856d9320b28 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -782,6 +782,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
struct flowi6 fl6;
struct ipcm6_cookie ipc6;
int addr_len = msg->msg_namelen;
+ int hdrincl;
u16 proto;
int err;

@@ -795,6 +796,13 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;

+ /* hdrincl should be READ_ONCE(inet->hdrincl)
+ * but READ_ONCE() doesn't work with bit fields.
+ * Doing this indirectly yields the same result.
+ */
+ hdrincl = inet->hdrincl;
+ hdrincl = READ_ONCE(hdrincl);
+
/*
* Get and verify the address.
*/
@@ -886,11 +894,14 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
opt = ipv6_fixup_options(&opt_space, opt);

fl6.flowi6_proto = proto;
- rfv.msg = msg;
- rfv.hlen = 0;
- err = rawv6_probe_proto_opt(&rfv, &fl6);
- if (err)
- goto out;
+
+ if (!hdrincl) {
+ rfv.msg = msg;
+ rfv.hlen = 0;
+ err = rawv6_probe_proto_opt(&rfv, &fl6);
+ if (err)
+ goto out;
+ }

if (!ipv6_addr_any(daddr))
fl6.daddr = *daddr;
@@ -907,7 +918,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
fl6.flowi6_oif = np->ucast_oif;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));

- if (inet->hdrincl)
+ if (hdrincl)
fl6.flowi6_flags |= FLOWI_FLAG_KNOWN_NH;

if (ipc6.tclass < 0)
@@ -930,7 +941,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
goto do_confirm;

back_from_confirm:
- if (inet->hdrincl)
+ if (hdrincl)
err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst,
msg->msg_flags, &ipc6.sockc);
else {
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 18df3bce73da..d98fcf926166 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3017,8 +3017,8 @@ static int packet_release(struct socket *sock)

synchronize_net();

+ kfree(po->rollover);
if (f) {
- kfree(po->rollover);
fanout_release_data(f);
kfree(f);
}
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index d664e9ade74d..0b347f46b2f4 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -428,12 +428,14 @@ int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool,
wait_clean_list_grace();

list_to_llist_nodes(pool, &unmap_list, &clean_nodes, &clean_tail);
- if (ibmr_ret)
+ if (ibmr_ret) {
*ibmr_ret = llist_entry(clean_nodes, struct rds_ib_mr, llnode);
-
+ clean_nodes = clean_nodes->next;
+ }
/* more than one entry in llist nodes */
- if (clean_nodes->next)
- llist_add_batch(clean_nodes->next, clean_tail, &pool->clean_list);
+ if (clean_nodes)
+ llist_add_batch(clean_nodes, clean_tail,
+ &pool->clean_list);

}

diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index d05c57664e36..ae65a1cfa596 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2329,7 +2329,6 @@ int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,
union sctp_addr addr;
struct sctp_af *af;
int src_match = 0;
- char *cookie;

/* We must include the address that the INIT packet came from.
* This is the only address that matters for an INIT packet.
@@ -2433,14 +2432,6 @@ int sctp_process_init(struct sctp_association *asoc, struct sctp_chunk *chunk,
/* Peer Rwnd : Current calculated value of the peer's rwnd. */
asoc->peer.rwnd = asoc->peer.i.a_rwnd;

- /* Copy cookie in case we need to resend COOKIE-ECHO. */
- cookie = asoc->peer.cookie;
- if (cookie) {
- asoc->peer.cookie = kmemdup(cookie, asoc->peer.cookie_len, gfp);
- if (!asoc->peer.cookie)
- goto clean_up;
- }
-
/* RFC 2960 7.2.1 The initial value of ssthresh MAY be arbitrarily
* high (for example, implementations MAY use the size of the receiver
* advertised window).
@@ -2609,7 +2600,9 @@ static int sctp_process_param(struct sctp_association *asoc,
case SCTP_PARAM_STATE_COOKIE:
asoc->peer.cookie_len =
ntohs(param.p->length) - sizeof(struct sctp_paramhdr);
- asoc->peer.cookie = param.cookie->body;
+ asoc->peer.cookie = kmemdup(param.cookie->body, asoc->peer.cookie_len, gfp);
+ if (!asoc->peer.cookie)
+ retval = 0;
break;

case SCTP_PARAM_HEARTBEAT_INFO:
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 48fe8f01265f..3131b4154c74 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -898,6 +898,11 @@ static void sctp_cmd_new_state(struct sctp_cmd_seq *cmds,
asoc->rto_initial;
}

+ if (sctp_state(asoc, ESTABLISHED)) {
+ kfree(asoc->peer.cookie);
+ asoc->peer.cookie = NULL;
+ }
+
if (sctp_state(asoc, ESTABLISHED) ||
sctp_state(asoc, CLOSED) ||
sctp_state(asoc, SHUTDOWN_RECEIVED)) {
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 8035bf495eb2..ead29c2aefa7 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -545,10 +545,22 @@ static int tls_device_push_pending_record(struct sock *sk, int flags)
return tls_push_data(sk, &msg_iter, 0, flags, TLS_RECORD_TYPE_DATA);
}

+static void tls_device_resync_rx(struct tls_context *tls_ctx,
+ struct sock *sk, u32 seq, u64 rcd_sn)
+{
+ struct net_device *netdev;
+
+ if (WARN_ON(test_and_set_bit(TLS_RX_SYNC_RUNNING, &tls_ctx->flags)))
+ return;
+ netdev = READ_ONCE(tls_ctx->netdev);
+ if (netdev)
+ netdev->tlsdev_ops->tls_dev_resync_rx(netdev, sk, seq, rcd_sn);
+ clear_bit_unlock(TLS_RX_SYNC_RUNNING, &tls_ctx->flags);
+}
+
void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);
- struct net_device *netdev = tls_ctx->netdev;
struct tls_offload_context_rx *rx_ctx;
u32 is_req_pending;
s64 resync_req;
@@ -563,10 +575,10 @@ void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn)
is_req_pending = resync_req;

if (unlikely(is_req_pending) && req_seq == seq &&
- atomic64_try_cmpxchg(&rx_ctx->resync_req, &resync_req, 0))
- netdev->tlsdev_ops->tls_dev_resync_rx(netdev, sk,
- seq + TLS_HEADER_SIZE - 1,
- rcd_sn);
+ atomic64_try_cmpxchg(&rx_ctx->resync_req, &resync_req, 0)) {
+ seq += TLS_HEADER_SIZE - 1;
+ tls_device_resync_rx(tls_ctx, sk, seq, rcd_sn);
+ }
}

static int tls_device_reencrypt(struct sock *sk, struct sk_buff *skb)
@@ -954,7 +966,10 @@ static int tls_device_down(struct net_device *netdev)
if (ctx->rx_conf == TLS_HW)
netdev->tlsdev_ops->tls_dev_del(netdev, ctx,
TLS_OFFLOAD_CTX_DIR_RX);
- ctx->netdev = NULL;
+ WRITE_ONCE(ctx->netdev, NULL);
+ smp_mb__before_atomic(); /* pairs with test_and_set_bit() */
+ while (test_bit(TLS_RX_SYNC_RUNNING, &ctx->flags))
+ usleep_range(10, 200);
dev_put(netdev);
list_del_init(&ctx->list);

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