Merge tag 'v6.6.13' into dev-6.6

This is the 6.6.13 stable release

LoongArch: Set unwind stack type to unknown rather than set error flag

[ Upstream commit 97ceddbc9404a7d1e2c4049435bff29427d762cc ]

During unwinding, unwind_done() is used as an end condition. Norm

LoongArch: Set unwind stack type to unknown rather than set error flag

[ Upstream commit 97ceddbc9404a7d1e2c4049435bff29427d762cc ]

During unwinding, unwind_done() is used as an end condition. Normally it
unwind to the user stack and then set the stack type to unknown, which
is a normal exit. When something unexpected happens in unwind process
and we cannot unwind anymore, we should set the error flag, and also set
the stack type to unknown to indicate that the unwind process can not
continue. The error flag emphasizes that the unwind process produce an
unexpected error. There is no unexpected things when we unwind the PT_REGS
in the top of IRQ stack and find out that is an user mode PT_REGS. Thus,
we should not set error flag and just set stack type to unknown.

Reported-by: Hengqi Chen <hengqi.chen@gmail.com>
Acked-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Merge drm/drm-fixes into drm-misc-fixes

Forwarding to v6.6-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'loongarch-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

- Allow usage of LSX/LASX in the kernel, and use them

Merge tag 'loongarch-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

- Allow usage of LSX/LASX in the kernel, and use them for
SIMD-optimized RAID5/RAID6 routines

- Add Loongson Binary Translation (LBT) extension support

- Add basic KGDB & KDB support

- Add building with kcov coverage

- Add KFENCE (Kernel Electric-Fence) support

- Add KASAN (Kernel Address Sanitizer) support

- Some bug fixes and other small changes

- Update the default config file

* tag 'loongarch-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (25 commits)
LoongArch: Update Loongson-3 default config file
LoongArch: Add KASAN (Kernel Address Sanitizer) support
LoongArch: Simplify the processing of jumping new kernel for KASLR
kasan: Add (pmd|pud)_init for LoongArch zero_(pud|p4d)_populate process
kasan: Add __HAVE_ARCH_SHADOW_MAP to support arch specific mapping
LoongArch: Add KFENCE (Kernel Electric-Fence) support
LoongArch: Get partial stack information when providing regs parameter
LoongArch: mm: Add page table mapped mode support for virt_to_page()
kfence: Defer the assignment of the local variable addr
LoongArch: Allow building with kcov coverage
LoongArch: Provide kaslr_offset() to get kernel offset
LoongArch: Add basic KGDB & KDB support
LoongArch: Add Loongson Binary Translation (LBT) extension support
raid6: Add LoongArch SIMD recovery implementation
raid6: Add LoongArch SIMD syndrome calculation
LoongArch: Add SIMD-optimized XOR routines
LoongArch: Allow usage of LSX/LASX in the kernel
LoongArch: Define symbol 'fault' as a local label in fpu.S
LoongArch: Adjust {copy, clear}_user exception handler behavior
LoongArch: Use static defined zero page rather than allocated
...

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LoongArch: Get partial stack information when providing regs parameter

Currently, arch_stack_walk() can only get the full stack information
including NMI. This is because the implementation of arch

LoongArch: Get partial stack information when providing regs parameter

Currently, arch_stack_walk() can only get the full stack information
including NMI. This is because the implementation of arch_stack_walk()
is forced to ignore the information passed by the regs parameter and use
the current stack information instead.

For some detection systems like KFENCE, only partial stack information
is needed. In particular, the stack frame where the interrupt occurred.

To support KFENCE, this patch modifies the implementation of the
arch_stack_walk() function so that if this function is called with the
regs argument passed, it retains all the stack information in regs and
uses it to provide accurate information.

Before this patch:
[ 1.531195 ] ==================================================================
[ 1.531442 ] BUG: KFENCE: out-of-bounds read in stack_trace_save_regs+0x48/0x6c
[ 1.531442 ]
[ 1.531900 ] Out-of-bounds read at 0xffff800012267fff (1B left of kfence-#12):
[ 1.532046 ] stack_trace_save_regs+0x48/0x6c
[ 1.532169 ] kfence_report_error+0xa4/0x528
[ 1.532276 ] kfence_handle_page_fault+0x124/0x270
[ 1.532388 ] no_context+0x50/0x94
[ 1.532453 ] do_page_fault+0x1a8/0x36c
[ 1.532524 ] tlb_do_page_fault_0+0x118/0x1b4
[ 1.532623 ] test_out_of_bounds_read+0xa0/0x1d8
[ 1.532745 ] kunit_generic_run_threadfn_adapter+0x1c/0x28
[ 1.532854 ] kthread+0x124/0x130
[ 1.532922 ] ret_from_kernel_thread+0xc/0xa4
<snip>

After this patch:
[ 1.320220 ] ==================================================================
[ 1.320401 ] BUG: KFENCE: out-of-bounds read in test_out_of_bounds_read+0xa8/0x1d8
[ 1.320401 ]
[ 1.320898 ] Out-of-bounds read at 0xffff800012257fff (1B left of kfence-#10):
[ 1.321134 ] test_out_of_bounds_read+0xa8/0x1d8
[ 1.321264 ] kunit_generic_run_threadfn_adapter+0x1c/0x28
[ 1.321392 ] kthread+0x124/0x130
[ 1.321459 ] ret_from_kernel_thread+0xc/0xa4
<snip>

Suggested-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Enze Li <lienze@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

Merge tag 'v6.4' into next

Sync up with mainline to bring in updates to shared infrastructure.

Merge drm/drm-next into drm-misc-next-fixes

Backmerging to sync drm-misc-next-fixes with drm-misc-next.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patche

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patches depend on these helpers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

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Merge tag 'v6.4-rc4' into wpan-next/staging

Linux 6.4-rc4

Merge drm/drm-next into drm-intel-gt-next

For conflict avoidance we need the following commit:

c9a9f18d3ad8 drm/i915/huc: use const struct bus_type pointers

Signed-off-by: Tvrtko Ursulin <tvrtko

Merge drm/drm-next into drm-intel-gt-next

For conflict avoidance we need the following commit:

c9a9f18d3ad8 drm/i915/huc: use const struct bus_type pointers

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

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Merge drm/drm-next into drm-intel-next

Backmerge to get some hwmon dependencies.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-fixes into drm-misc-fixes

Let's bring 6.4-rc1 in drm-misc-fixes to start the new fix cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge drm/drm-next into drm-misc-next

Start the 6.5 release cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Adjacent changes:

net/mptcp/protocol.h
63740448a32e ("mptcp: fix accept vs worker race")
2a6a870e44dd ("mptcp: stops worker on una

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Adjacent changes:

net/mptcp/protocol.h
63740448a32e ("mptcp: fix accept vs worker race")
2a6a870e44dd ("mptcp: stops worker on unaccepted sockets at listener close")
ddb1a072f858 ("mptcp: move first subflow allocation at mpc access time")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Merge tag 'loongarch-fixes-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
"Some bug fixes, some build fixes, a comment fix

Merge tag 'loongarch-fixes-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
"Some bug fixes, some build fixes, a comment fix and a trivial cleanup"

* tag 'loongarch-fixes-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
tools/loongarch: Use __SIZEOF_LONG__ to define __BITS_PER_LONG
LoongArch: Replace hard-coded values in comments with VALEN
LoongArch: Clean up plat_swiotlb_setup() related code
LoongArch: Check unwind_error() in arch_stack_walk()
LoongArch: Adjust user_regset_copyin parameter to the correct offset
LoongArch: Adjust user_watch_state for explicit alignment
LoongArch: module: set section addresses to 0x0
LoongArch: Mark 3 symbol exports as non-GPL
LoongArch: Enable PG when wakeup from suspend
LoongArch: Fix _CONST64_(x) as unsigned
LoongArch: Fix build error if CONFIG_SUSPEND is not set
LoongArch: Fix probing of the CRC32 feature
LoongArch: Make WriteCombine configurable for ioremap()

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LoongArch: Check unwind_error() in arch_stack_walk()

We can see the following messages with CONFIG_PROVE_LOCKING=y on
LoongArch:

BUG: MAX_STACK_TRACE_ENTRIES too low!
turning off the locking co

LoongArch: Check unwind_error() in arch_stack_walk()

We can see the following messages with CONFIG_PROVE_LOCKING=y on
LoongArch:

BUG: MAX_STACK_TRACE_ENTRIES too low!
turning off the locking correctness validator.

This is because stack_trace_save() returns a big value after call
arch_stack_walk(), here is the call trace:

save_trace()
stack_trace_save()
arch_stack_walk()
stack_trace_consume_entry()

arch_stack_walk() should return immediately if unwind_next_frame()
failed, no need to do the useless loops to increase the value of c->len
in stack_trace_consume_entry(), then we can fix the above problem.

Cc: stable@vger.kernel.org
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/all/8a44ad71-68d2-4926-892f-72bfc7a67e2a@roeck-us.net/
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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Merge branch 'main' into zstd-linus

Merge branch 'main' into zstd-next

Merge branch 'next' into for-linus

Prepare input updates for 6.1 merge window.

Merge branch 'for-6.1/logitech' into for-linus

- Add hanlding of all Bluetooth HID++ devices and fixes in hid++
(Bastien Nocera)

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko

Merge drm/drm-next into drm-intel-gt-next

Daniele needs 84d4333c1e28 ("misc/mei: Add NULL check to component match
callback functions") in order to merge the DG2 HuC patches.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

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Merge branch 'for-6.1/nvdimm' into libnvdimm-for-next

Add v6.1 content on top of some straggling updates that missed v6.0.

Merge branch 'mlx5-vfio' into mlx5-next

Merge net/mlx5 dependencies for device DMA logging.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

Merge branch 'for-6.0/dax' into libnvdimm-fixes

Pick up another "Soft Reservation" fix for v6.0-final on top of some
straggling nvdimm fixes that missed v5.19.