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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
- Followup fixes for resilient spinlock (Kumar Kartikeya Dwivedi):
- Make res_spin_lock test less verbose, since it was spamming BPF
CI on failure, and make the check for AA deadlock stronger
- Fix rebasing mistake and use architecture provided
res_smp_cond_load_acquire
- Convert BPF maps (queue_stack and ringbuf) to resilient spinlock
to address long standing syzbot reports
- Make sure that classic BPF load instruction from SKF_[NET|LL]_OFF
offsets works when skb is fragmeneted (Willem de Bruijn)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Convert ringbuf map to rqspinlock
bpf: Convert queue_stack map to rqspinlock
bpf: Use architecture provided res_smp_cond_load_acquire
selftests/bpf: Make res_spin_lock AA test condition stronger
selftests/net: test sk_filter support for SKF_NET_OFF on frags
bpf: support SKF_NET_OFF and SKF_LL_OFF on skb frags
selftests/bpf: Make res_spin_lock test less verbose
All Zen5 machines out there should get BIOS updates which update to the
correct microcode patches addressing the microcode signature issue.
However, silly people carve out random microcode blobs from BIOS
packages and think are doing other people a service this way...
Block loading of any unreleased standalone Zen5 microcode patches.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: <stable@kernel.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Cc: Nikolay Borisov <nik.borisov@suse.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20250410114222.32523-1-bp@kernel.org
After commit 91b587ba79 ("f2fs: Introduce linear search for
dentries"), f2fs forced to use linear lookup whenever a hash-based
lookup fails on casefolded directory, it may affect performance
for scenarios: a) create a new file w/ filename it doesn't exist
in directory, b) lookup a file which may be removed.
This patch supports to disable linear lookup fallback, so, once there
is a solution for commit 5c26d2f1d3 ("unicode: Don't special case
ignorable code points") to fix red heart unicode issue, then we can
set an encodeing flag to disable the fallback for performance recovery.
The way is kept in line w/ ext4, refer to commit 9e28059d56 ("ext4:
introduce linear search for dentries").
Cc: Daniel Lee <chullee@google.com>
Cc: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
When selecting a victim using next_victim_seg in a large section, the
selected section might already have been cleared and designated as the
new current section, making it actively in use.
This behavior causes inconsistency between the SIT and SSA.
F2FS-fs (dm-54): Inconsistent segment (70961) type [0, 1] in SSA and SIT
Call trace:
dump_backtrace+0xe8/0x10c
show_stack+0x18/0x28
dump_stack_lvl+0x50/0x6c
dump_stack+0x18/0x28
f2fs_stop_checkpoint+0x1c/0x3c
do_garbage_collect+0x41c/0x271c
f2fs_gc+0x27c/0x828
gc_thread_func+0x290/0x88c
kthread+0x11c/0x164
ret_from_fork+0x10/0x20
issue scenario
segs_per_sec=2
- seg#0 and seg#1 are all dirty
- all valid blocks are removed in seg#1
- gc select this sec and next_victim_seg=seg#0
- migrate seg#0, next_victim_seg=seg#1
- checkpoint -> sec(seg#0, seg#1) becomes free
- allocator assigns sec(seg#0, seg#1) to curseg
- gc tries to migrate seg#1
Fixes: e3080b0120 ("f2fs: support subsectional garbage collection")
Signed-off-by: yohan.joung <yohan.joung@sk.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
When rv_is_container_monitor() is called on the last monitor in
rv_monitors_list, KASAN yells:
BUG: KASAN: global-out-of-bounds in rv_is_container_monitor+0x101/0x110
Read of size 8 at addr ffffffff97c7c798 by task setup/221
The buggy address belongs to the variable:
rv_monitors_list+0x18/0x40
This is due to list_next_entry() is called on the last entry in the list.
It wraps around to the first list_head, and the first list_head is not
embedded in struct rv_monitor_def.
Fix it by checking if the monitor is last in the list.
Cc: stable@vger.kernel.org
Cc: Gabriele Monaco <gmonaco@redhat.com>
Fixes: cb85c660fc ("rv: Add option for nested monitors and include sched")
Link: https://lore.kernel.org/e85b5eeb7228bfc23b8d7d4ab5411472c54ae91b.1744355018.git.namcao@linutronix.de
Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
The retval and retaddr options for function_graph tracer will add a
comment at the end of a function for both leaf and non leaf functions that
looks like:
__wake_up_common(); /* ret=0x1 */
} /* pick_next_task_fair ret=0x0 */
The function print_graph_retval() adds a newline after the "*/". But if
that's not called, the caller function needs to make sure there's a
newline added.
This is confusing and when the function parameters code was added, it
added a newline even when calling print_graph_retval() as the fact that
the print_graph_retval() function prints a newline isn't obvious.
This caused an extra newline to be printed and that made it fail the
selftests when the retval option was set, as the selftests were not
expecting blank lines being injected into the trace.
Instead of having print_graph_retval() print a newline, just have the
caller always print the newline regardless if it calls print_graph_retval()
or not. This not only fixes this bug, but it also simplifies the code.
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20250411133015.015ca393@gandalf.local.home
Reported-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Closes: https://lore.kernel.org/all/ccc40f2b-4b9e-4abd-8daf-d22fce2a86f0@sirena.org.uk/
Fixes: ff5c9c576e ("ftrace: Add support for function argument to graph tracer")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
The kdoc header incorrectly references an older parameter, update it
to reference what is currently used in the function.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504122308.Ch8PzJdD-lkp@intel.com/
Signed-off-by: Paul Moore <paul@paul-moore.com>
The first three patches handle clk_get_rate() returning 0 (which might
happen for example if the CCF is disabled). The first of these was found
because this triggered a warning with clang, the two others by looking
for similar issues in other drivers. Similar patches were merged earlier
for v6.15-rc1 in commit 92b71befc3 ("Merge tag
'objtool-urgent-2025-04-01' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip").
The remaining three fixes address issues in the new waveform pwm API.
Now that I worked on this a bit more, the finer details and corner cases
are better understood and the code is fixed accordingly.
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Merge tag 'pwm/for-6.15-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull pwm fixes from Uwe Kleine-König:
"A set of fixes for pwm core and various drivers
The first three patches handle clk_get_rate() returning 0 (which might
happen for example if the CCF is disabled). The first of these was
found because this triggered a warning with clang, the two others by
looking for similar issues in other drivers.
The remaining three fixes address issues in the new waveform pwm API.
Now that I worked on this a bit more, the finer details and corner
cases are better understood and the code is fixed accordingly"
* tag 'pwm/for-6.15-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux:
pwm: axi-pwmgen: Let .round_waveform_tohw() signal when request was rounded up
pwm: stm32: Search an appropriate duty_cycle if period cannot be modified
pwm: Let pwm_set_waveform() succeed even if lowlevel driver rounded up
pwm: fsl-ftm: Handle clk_get_rate() returning 0
pwm: rcar: Improve register calculation
pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()
Christian Brauner <brauner@kernel.org> says:
In a prior patch series we tried to cleanly differentiate between:
(1) The task has already been reaped.
(2) The caller requested a pidfd for a thread-group leader but the pid
actually references a struct pid that isn't used as a thread-group
leader.
as this was causing issues for non-threaded workloads.
But there's cases where the current simple logic is wrong. Specifically,
if the pid was a leader pid and the check races with __unhash_process().
Stabilize this by using the pidfd waitqueue lock.
* patches from https://lore.kernel.org/20250411-work-pidfs-enoent-v2-0-60b2d3bb545f@kernel.org:
pidfs: ensure consistent ENOENT/ESRCH reporting
exit: move wake_up_all() pidfd waiters into __unhash_process()
Link: https://lore.kernel.org/20250411-work-pidfs-enoent-v2-0-60b2d3bb545f@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
In a prior patch series we tried to cleanly differentiate between:
(1) The task has already been reaped.
(2) The caller requested a pidfd for a thread-group leader but the pid
actually references a struct pid that isn't used as a thread-group
leader.
as this was causing issues for non-threaded workloads.
But there's cases where the current simple logic is wrong. Specifically,
if the pid was a leader pid and the check races with __unhash_process().
Stabilize this by using the pidfd waitqueue lock.
Link: https://lore.kernel.org/20250411-work-pidfs-enoent-v2-2-60b2d3bb545f@kernel.org
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Move the pidfd notification out of __change_pid() and into
__unhash_process(). The only valid call to __change_pid() with a NULL
argument and PIDTYPE_PID is from __unhash_process(). This is a lot more
obvious than calling it from __change_pid().
Link: https://lore.kernel.org/20250411-work-pidfs-enoent-v2-1-60b2d3bb545f@kernel.org
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Device can be unbound, so driver must also release memory for the wakeup
source.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250406-b4-device-wakeup-leak-iio-v1-3-2d7d322a4a93@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Prepare for splitting off parts of the SEV core.c source file into a
file that carries code that must tolerate being called from the early
1:1 mapping. This will allow special build-time handling of thise code,
to ensure that it gets generated in a way that is compatible with the
early execution context.
So create a de-facto internal SEV API and put the definitions into
sev-internal.h. No attempt is made to allow this header file to be
included in arbitrary other sources - this is explicitly not the intent.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-20-ardb+git@google.com
RIP_REL_REF() has no effect on code residing in arch/x86/boot/startup,
as it is built with -fPIC. So remove any occurrences from the SME
startup code.
Note the SME is the only caller of cc_set_mask() that requires this, so
drop it from there as well.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-19-ardb+git@google.com
Move the SME initialization code, which runs from the 1:1 mapping of
memory as it operates on the kernel virtual mapping, into the new
sub-directory arch/x86/boot/startup/ where all startup code will reside
that needs to tolerate executing from the 1:1 mapping.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-18-ardb+git@google.com
Now that __startup_64() is built using -fPIC, RIP_REL_REF() has become a
NOP and can be removed. Only some occurrences of rip_rel_ptr() will
remain, to explicitly take the address of certain global structures in
the 1:1 mapping of memory.
While at it, update the code comment to describe why this is needed.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-17-ardb+git@google.com
The startup code that constructs the kernel virtual mapping runs from
the 1:1 mapping of memory itself, and therefore, cannot use absolute
symbol references. Before making changes in subsequent patches, move
this code into a separate source file under arch/x86/boot/startup/ where
all such code will be kept from now on.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-16-ardb+git@google.com
Move the early GDT/IDT setup code that runs long before the kernel
virtual mapping is up into arch/x86/boot/startup/, and build it in a way
that ensures that the code tolerates being called from the 1:1 mapping
of memory. The code itself is left unchanged by this patch.
Also tweak the sed symbol matching pattern in the decompressor to match
on lower case 't' or 'b', as these will be emitted by Clang for symbols
with hidden linkage.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-15-ardb+git@google.com
RIP_REL_REF() is used in non-PIC C code that is called very early,
before the kernel virtual mapping is up, which is the mapping that the
linker expects. It is currently used in two different ways:
- to refer to the value of a global variable, including as an lvalue in
assignments;
- to take the address of a global variable via the mapping that the code
currently executes at.
The former case is only needed in non-PIC code, as PIC code will never
use absolute symbol references when the address of the symbol is not
being used. But taking the address of a variable in PIC code may still
require extra care, as a stack allocated struct assignment may be
emitted as a memcpy() from a statically allocated copy in .rodata.
For instance, this
void startup_64_setup_gdt_idt(void)
{
struct desc_ptr startup_gdt_descr = {
.address = (__force unsigned long)gdt_page.gdt,
.size = GDT_SIZE - 1,
};
may result in an absolute symbol reference in PIC code, even though the
struct is allocated on the stack and populated at runtime.
To address this case, make rip_rel_ptr() accessible in PIC code, and
update any existing uses where the address of a global variable is
taken using RIP_REL_REF.
Once all code of this nature has been moved into arch/x86/boot/startup
and built with -fPIC, RIP_REL_REF() can be retired, and only
rip_rel_ptr() will remain.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-14-ardb+git@google.com
We no longer need i915_drv.h in intel_pch.c, and we no longer need
intel_pch.h universally.
With intel_pch.h being included from intel_display_core.h, it's still
included pretty much everywhere, but there's no need to include it
explicitly from i915_drv.h or xe_device_types.h.
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/68ec70f6880b7af19bc93b9817959299634a555d.1744364975.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Now that intel_pch lives under display, let's begin its
conversion towards struct intel_display.
Move the pch_type to inside intel_display and convert the
callers.
While doing it, sort intel_display_core.h include list
alphabetically.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/8ffe86eb2a02153e3f866a81fb6dc8a3327a0f25.1744364975.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
The only usage of the "PCH" infra is to detect which South Display
Engine we should be using. Move it under display so we can convert
all its callers towards intel_display struct later.
No functional or code change.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/041e3dee494aa15c22172360f2bdd9b15e4acb00.1744364975.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
We gain nothing by having the core code enable IRQs right before calling
activate_mm() only for us to turn them right back off again in switch_mm().
This will save a few cycles, so execve() should be blazingly fast with this
patch applied!
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20250402094540.3586683-8-mingo@kernel.org
This should be considerably more robust. It's also necessary for optimized
for_each_possible_lazymm_cpu() on x86 -- without this patch, EFI calls in
lazy context would remove the lazy mm from mm_cpumask().
[ mingo: Merged it on top of x86/alternatives ]
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20250402094540.3586683-7-mingo@kernel.org
EFI runtime services should use temporary MMs, but EFI runtime services
want IRQs on. Preemption must still be disabled in a temporary MM context.
At some point, the entirely temporary MM mechanism should be moved out of
arch code.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250402094540.3586683-6-mingo@kernel.org
Now that unuse_temporary_mm() lives in tlb.c it can access
cpu_tlbstate.loaded_mm.
[ mingo: Merged it on top of x86/alternatives ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20250402094540.3586683-5-mingo@kernel.org
This prepares them for use outside of the alternative machinery.
The code is unchanged.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20250402094540.3586683-4-mingo@kernel.org
When decoding an instruction or handling a perf event that references an
LDT segment, if we don't have a valid user context, trying to access the
LDT by any means other than SLDT is racy. Certainly, using
current->active_mm is wrong, as active_mm can point to a real user mm when
CR3 and LDTR no longer reference that mm.
Clean up the code. If nmi_uaccess_okay() says we don't have a valid
context, just fail. Otherwise use current->mm.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20250402094540.3586683-3-mingo@kernel.org
In commit 209954cbc7 ("x86/mm/tlb: Update mm_cpumask lazily")
unuse_temporary_mm() grew the assumption that it gets used on
poking_mm exclusively. While this is currently true, lets not hard
code this assumption.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20250402094540.3586683-2-mingo@kernel.org
When operating with multiple devices grouped together, the firmware stores
data related to the state machine of each partner device in the MLO global
memory region. If the firmware crashes, it updates the state to 'crashed'.
During recovery, this memory is shared with the firmware again, and upon
detecting the 'crashed' state, it reasserts. This leads to a loop of
firmware asserts and it never recovers.
Hence to fix this issue, once all devices in the group have been asserted
and powered down, reset the MLO global memory region.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-9-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Currently, in ath12k_core_reset(), the device is powered up immediately
after a power down. However, with hardware grouping, when one device
asserts, all partner devices also asserts. If there is a delay in
processing these asserts, by the time this device powers up, other devices
might still be asserting, leading to an overall recovery failure.
To prevent this issue, ensure all asserts for a group are processed before
initiating the power-up sequence.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-8-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Currently, when ath12k_core_restart() is called and the ab->is_reset flag
is set, it invokes ieee80211_restart_hw() for all hardware in the same
group. However, other hardware might still be in the recovery process,
making this call inappropriate with grouping into picture.
To address this, add a condition to check if the group is ready. If the
group is not ready, do not call ieee80211_restart_hw().
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-7-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Currently, ath12k_core_pre_reconfigure_recovery() reconfigures all radios
within the same group. During grouping and driver going for a recovery,
this function is called as many times as there are devices in the group.
Consequently, it performs the same reconfiguration multiple times, which
is unnecessary.
To prevent this, add a check to continue if the action has already been
taken.
To simplify the management of various flags, the reason for hardware queues
being stopped is used as a check instead of introducing a new flag.
While at it, also add missing wiphy locks. Wiphy lock is required since
ath12k_mac_drain_tx() which is called by
ath12k_core_pre_reconfigure_recovery() needs this lock to be held by the
caller.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-6-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
At present, during PCI shutdown, the power down is only executed for a
single device. However, when operating in a group, all devices need to be
powered down simultaneously. Failure to do so will result in a firmware
assertion.
Hence, introduce a new ath12k_pci_hw_group_power_down() and call it during
power down. This will ensure that all partner devices are properly powered
down.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-5-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Commit a5686ae820 ("wifi: ath12k: move ATH12K_FLAG_REGISTERED handling to
ath12k_mac_register()") relocated the setting of the ATH12K_FLAG_REGISTERED
flag to the ath12k_mac_register() function. However, this function only
accesses the first device (ab) via ag->ab[0], resulting in the flag being
set only for the first device in the group. Similarly,
ath12k_mac_unregister() only unsets the flag for the first device. The flag
should actually be set for all devices in the group to avoid issues during
recovery.
Hence, move setting and clearing of this flag in the function
ath12k_core_hw_group_start() and ath12k_core_hw_group_stop() respectively.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Fixes: a5686ae820 ("wifi: ath12k: move ATH12K_FLAG_REGISTERED handling to ath12k_mac_register()")
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-4-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
With hardware grouping, during reboot, whenever a device is removed, it
powers down itself and all its partner devices in the same group. Now this
is done by all devices and hence there is multiple power down for devices
and hence the following error messages can be seen:
ath12k_pci 0002:01:00.0: failed to set mhi state POWER_OFF(3) in current mhi state (0x0)
ath12k_pci 0002:01:00.0: failed to set mhi state: POWER_OFF(3)
ath12k_pci 0002:01:00.0: failed to set mhi state DEINIT(1) in current mhi state (0x0)
ath12k_pci 0002:01:00.0: failed to set mhi state: DEINIT(1)
ath12k_pci 0003:01:00.0: failed to set mhi state POWER_OFF(3) in current mhi state (0x0)
ath12k_pci 0003:01:00.0: failed to set mhi state: POWER_OFF(3)
ath12k_pci 0003:01:00.0: failed to set mhi state DEINIT(1) in current mhi state (0x0)
ath12k_pci 0003:01:00.0: failed to set mhi state: DEINIT(1)
ath12k_pci 0004:01:00.0: failed to set mhi state POWER_OFF(3) in current mhi state (0x0)
ath12k_pci 0004:01:00.0: failed to set mhi state: POWER_OFF(3)
To prevent this, check if the ATH12K_PCI_FLAG_INIT_DONE flag is already
set before powering down. If it is set, it indicates that another partner
device has already performed the power down, and this device can skip this
step.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-3-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Currently, driver does not manage reference counting for attaching and
detaching cores to/from hardware groups. This can lead to issues when
multiple cores are involved. Or with same core, attach/detach is called
multiple times back to back.
Fix this issue by using reference counting.
With that, it is now ensured that the core is properly attached or detached
from the hardware group and even back to back calls will not alter the
count.
Additionally, add some debug logs during the attachment and detachment
events for better debugging and tracking.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-2-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
During rmmod of ath12k module with SLUB debug enabled, following print is
seen -
=============================================================================
BUG kmalloc-1k (Not tainted): Object already free
-----------------------------------------------------------------------------
Allocated in ath12k_reg_build_regd+0x94/0xa20 [ath12k] age=10470 cpu=0 pid=0
__kmalloc_noprof+0xf4/0x368
ath12k_reg_build_regd+0x94/0xa20 [ath12k]
ath12k_wmi_op_rx+0x199c/0x2c14 [ath12k]
ath12k_htc_rx_completion_handler+0x398/0x554 [ath12k]
ath12k_ce_per_engine_service+0x248/0x368 [ath12k]
ath12k_pci_ce_workqueue+0x28/0x50 [ath12k]
process_one_work+0x14c/0x28c
bh_worker+0x22c/0x27c
workqueue_softirq_action+0x80/0x90
tasklet_action+0x14/0x3c
handle_softirqs+0x108/0x240
__do_softirq+0x14/0x20
Freed in ath12k_reg_free+0x40/0x74 [ath12k] age=136 cpu=2 pid=166
kfree+0x148/0x248
ath12k_reg_free+0x40/0x74 [ath12k]
ath12k_core_hw_group_destroy+0x68/0xac [ath12k]
ath12k_core_deinit+0xd8/0x124 [ath12k]
ath12k_pci_remove+0x6c/0x130 [ath12k]
pci_device_remove+0x44/0xe8
device_remove+0x4c/0x80
device_release_driver_internal+0x1d0/0x22c
driver_detach+0x50/0x98
bus_remove_driver+0x70/0xf4
driver_unregister+0x30/0x60
pci_unregister_driver+0x24/0x9c
ath12k_pci_exit+0x18/0x24 [ath12k]
__arm64_sys_delete_module+0x1a0/0x2a8
invoke_syscall+0x48/0x110
el0_svc_common.constprop.0+0x40/0xe0
Slab 0xfffffdffc0033600 objects=10 used=6 fp=0xffff000000cdcc00 flags=0x3fffe0000000240(workingset|head|node=0|zone=0|lastcpupid=0x1ffff)
Object 0xffff000000cdcc00 @offset=19456 fp=0xffff000000cde400
[...]
This issue arises because in ath12k_core_hw_group_destroy(), each device
calls ath12k_core_soc_destroy() for itself and all its partners within the
same group. Since ath12k_core_hw_group_destroy() is invoked for each
device, this results in a double free condition, eventually causing the
SLUB bug.
To resolve this, set the freed pointers to NULL. And since there could be
a race condition to read these pointers, guard these with the available
mutex lock.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Fixes: 6f245ea0ec ("wifi: ath12k: introduce device group abstraction")
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-1-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
If the user tries to write more than 32 bytes then it results in memory
corruption. Fortunately, this is debugfs so it's limited to root users.
Fixes: 3f73c24f28 ("wifi: ath12k: Add support to enable debugfs_htt_stats")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/35daefbd-d493-41d9-b192-96177d521b40@stanley.mountain
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
The devm_memremap() function returns error pointers on error and the
ioremap() function returns NULL on error. The error checking here got
those flipped around.
Fixes: c01d5cc9b9 ("wifi: ath12k: Power up userPD")
Fixes: 6cee30f0da ("wifi: ath12k: add AHB driver support for IPQ5332")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/937abc74-9648-4c05-a2c3-8db408b3ed9e@stanley.mountain
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
The use of of_property_read_u32() isn't really correct as
"memory-region" contains phandles (though those happen to be u32s. As
it is just testing for property presence, use of_property_present()
instead.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250408190211.2505737-2-robh@kernel.org
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Incorrect WMI tag is used for EHT rate update from host to firmware
while encoding peer assoc WMI.
Correct the WMI tag used for EHT rate update from WMI_TAG_HE_RATE_SET
to the proper tag. This ensures firmware does not mistakenly update HE rate during parsing.
Found during code review. Compile tested only.
Fixes: 5b70ec6036 ("wifi: ath12k: add WMI support for EHT peer")
Signed-off-by: Ramya Gnanasekar <ramya.gnanasekar@oss.qualcomm.com>
Link: https://patch.msgid.link/20250409152341.944628-1-ramya.gnanasekar@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Currently, the AP does not support the broadcast target wake time (TWT)
feature. Therefore, disable the broadcast TWT feature in the HE MAC
capabilities element field.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00209-QCAHKSWPL_SILICONZ-1
Signed-off-by: Thomas Wu <quic_wthomas@quicinc.com>
Signed-off-by: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250409053830.4039467-1-aaradhana.sahu@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Currently, ahvif->key_cipher is compared with the enum value
(WMI_CIPHER_NONE) inside ath12k_mac_op_tx(). However, ahvif->key_cipher is
set using the macro value WLAN_CIPHER_SUITE_XXXX which seems inconsistent.
To improve code consistency and readability, introduce check against zero
for ahvif->key_cipher instead of comparing it with the enum
(WMI_CIPHER_NONE).
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00209-QCAHKSWPL_SILICONZ-1
Signed-off-by: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250403082207.3323938-3-aaradhana.sahu@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Currently, the key_cipher in the ath12k_vif structure, which represents the
group cipher of the MLD AP, is populated when the link address matches the
ieee80211_vif address within ath12k_install_key().
However, in MLD AP, the link address and ieee80211_vif address can differ.
Due to this key_cipher is not populated and multicast packets don't get the
correct cipher information and resulting multicast packets drop.
To fix this, compare the link address with the arvif->bssid instead of the
ieee80211_vif address.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00209-QCAHKSWPL_SILICONZ-1
Fixes: 3dd2c68f20 ("wifi: ath12k: prepare vif data structure for MLO handling")
Signed-off-by: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250403082207.3323938-2-aaradhana.sahu@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
