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Add a 'struct bpf_scc_callchain callchain_buf' field in bpf_verifier_env.
This way, the previous bpf_scc_callchain local variables can be
replaced by taking address of env->callchain_buf. This can reduce stack
usage and fix the following error:
kernel/bpf/verifier.c:19921:12: error: stack frame size (1368) exceeds limit (1280) in 'do_check'
[-Werror,-Wframe-larger-than]
Reported-by: Arnd Bergmann <arnd@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20250703141117.1485108-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Arnd Bergmann reported an issue ([1]) where clang compiler (less than
llvm18) may trigger an error where the stack frame size exceeds the limit.
I can reproduce the error like below:
kernel/bpf/verifier.c:24491:5: error: stack frame size (2552) exceeds limit (1280) in 'bpf_check'
[-Werror,-Wframe-larger-than]
kernel/bpf/verifier.c:19921:12: error: stack frame size (1368) exceeds limit (1280) in 'do_check'
[-Werror,-Wframe-larger-than]
Use env->insn_buf for bpf insns instead of putting these insns on the
stack. This can resolve the above 'bpf_check' error. The 'do_check' error
will be resolved in the next patch.
[1] https://lore.kernel.org/bpf/20250620113846.3950478-1-arnd@kernel.org/
Reported-by: Arnd Bergmann <arnd@kernel.org>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20250703141111.1484521-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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In verifier.c, the following code patterns (in two places)
struct bpf_insn *patch = &insn_buf[0];
can be simplified to
struct bpf_insn *patch = insn_buf;
which is easier to understand.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20250703141106.1483216-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Before handling the tail call in record_func_key(), we check that the
map is of the expected type and log a verifier error if it isn't. Such
an error however doesn't indicate anything wrong with the verifier. The
check for map<>func compatibility is done after record_func_key(), by
check_map_func_compatibility().
Therefore, this patch logs the error as a typical reject instead of a
verifier error.
Fixes: d2e4c1e6c294 ("bpf: Constant map key tracking for prog array pokes")
Fixes: 0df1a55afa83 ("bpf: Warn on internal verifier errors")
Reported-by: syzbot+efb099d5833bca355e51@syzkaller.appspotmail.com
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/1f395b74e73022e47e04a31735f258babf305420.1751578055.git.paul.chaignon@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Kumar Kartikeya Dwivedi says:
====================
BPF Standard Streams
This set introduces a standard output interface with two streams, namely
stdout and stderr, for BPF programs. The idea is that these streams will
be written to by BPF programs and the kernel, and serve as standard
interfaces for informing user space of any BPF runtime violations. Users
can also utilize them for printing normal messages for debugging usage,
as is the case with bpf_printk() and trace pipe interface.
BPF programs and the kernel can use these streams to output messages.
User space can dump these messages using bpftool.
The stream interface itself is implemented using a lockless list, so
that we can queue messages from any context. Every printk statement into
the stream leads to memory allocation. Allocation itself relies on
try_alloc_pages() to construct a bespoke bump allocator to carve out
elements. If this fails, we finally give up and drop the message.
See commit logs for more details.
Two scenarios are covered:
- Deadlocks and timeouts in rqspinlock.
- Timeouts for may_goto.
In each we provide the stack trace and source information for the
offending BPF programs. Both the C source line and the file and line
numbers are printed. The output format is as follows:
ERROR: AA or ABBA deadlock detected for bpf_res_spin_lock
Attempted lock = 0xff11000108f3a5e0
Total held locks = 1
Held lock[ 0] = 0xff11000108f3a5e0
CPU: 48 UID: 0 PID: 786 Comm: test_progs
Call trace:
bpf_stream_stage_dump_stack+0xb0/0xd0
bpf_prog_report_rqspinlock_violation+0x10b/0x130
bpf_res_spin_lock+0x8c/0xa0
bpf_prog_3699ea119d1f6ed8_foo+0xe5/0x140
if (!bpf_res_spin_lock(&v2->lock)) @ stream_bpftool.c:62
bpf_prog_9b324ec4a1b2a5c0_stream_bpftool_dump_prog_stream+0x7e/0x2d0
foo(stream); @ stream_bpftool.c:93
bpf_prog_test_run_syscall+0x102/0x240
__sys_bpf+0xd68/0x2bf0
__x64_sys_bpf+0x1e/0x30
do_syscall_64+0x68/0x140
entry_SYSCALL_64_after_hwframe+0x76/0x7e
ERROR: Timeout detected for may_goto instruction
CPU: 48 UID: 0 PID: 786 Comm: test_progs
Call trace:
bpf_stream_stage_dump_stack+0xb0/0xd0
bpf_prog_report_may_goto_violation+0x6a/0x90
bpf_check_timed_may_goto+0x4d/0xa0
arch_bpf_timed_may_goto+0x21/0x40
bpf_prog_3699ea119d1f6ed8_foo+0x12f/0x140
while (can_loop) @ stream_bpftool.c:71
bpf_prog_9b324ec4a1b2a5c0_stream_bpftool_dump_prog_stream+0x7e/0x2d0
foo(stream); @ stream_bpftool.c:93
bpf_prog_test_run_syscall+0x102/0x240
__sys_bpf+0xd68/0x2bf0
__x64_sys_bpf+0x1e/0x30
do_syscall_64+0x68/0x140
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Changelog:
----------
v4 -> v5
v4: https://lore.kernel.org/bpf/20250702031737.407548-1-memxor@gmail.com
* Add acks from Emil.
* Address various nits.
* Add extra failure tests.
* Make deadlock test a little more robust to catch problems.
v3 -> v4
v3: https://lore.kernel.org/bpf/20250624031252.2966759-1-memxor@gmail.com
* Switch to alloc_pages_nolock(), avoid incorrect memcg accounting. (Alexei)
* We will figure out proper accounting later.
* Drop error limit logic, restrict stream capacity to 100,000 bytes. (Alexei)
* Remove extra invocation of is_bpf_text_address(). (Jiri)
* Avoid emitting NULL byte into the stream text, adjust regex in selftests. (Alexei)
* Add comment around rcu_read_lock() for bpf_prog_ksym_find. (Alexei)
* Tighten stream capacity check selftest.
* Add acks from Andrii.
v2 -> v3
v2: https://lore.kernel.org/bpf/20250524011849.681425-1-memxor@gmail.com
* Fix bug when handling single element stream stage. (Eduard)
* Move to mutex for protection of stream read and copy_to_user(). (Alexei)
* Split bprintf refactor into its own patch. (Alexei)
* Move kfunc definition to common_btf_ids to avoid initcall proliferation. (Alexei)
* Return line number by reference in bpf_prog_get_file_line. (Alexei)
* Remove NULL checks for BTF name pointer. (Alexei)
* Add WARN_ON_ONCE(!rcu_read_lock_held()) in bpf_prog_ksym_find. (Eduard)
* Remove hardcoded stream stage from macros. (Alexei, Eduard)
* Move refactoring hunks to their own patch. (Alexei)
* Add empty opts parameter for future extensibility to libbpf API. (Andrii, Eduard)
* Add BPF_STREAM_{STDOUT,STDERR} to UAPI. (Andrii)
* Add code to match on backtrace output. (Eduard)
* Fix misc nits.
* Add acks.
v1 -> v2
v1: https://lore.kernel.org/bpf/20250507171720.1958296-1-memxor@gmail.com
* Drop arena page fault prints, will be done as follow up. (Alexei)
* Defer Andrii's request to reuse code and Alan's suggestion of error
counts to follow up.
* Drop bpf_dynptr_from_mem_slice patch.
* Drop some acks due to heavy reworking.
* Fix KASAN splat in bpf_prog_get_file_line. (Eduard)
* Collapse bpf_prog_ksym_find and is_bpf_text_address into single
call. (Eduard)
* Add missing RCU read lock in bpf_prog_ksym_find.
* Fix incorrect error handling in dump_stack_cb.
* Simplify libbpf macro. (Eduard, Andrii)
* Introduce bpf_prog_stream_read() libbpf API. (Eduard, Alexei, Andrii)
* Drop BPF prog from the bpftool, use libbpf API.
* Rework selftests.
RFC v1 -> v1
RFC v1: https://lore.kernel.org/bpf/20250414161443.1146103-1-memxor@gmail.com
* Rebase on bpf-next/master.
* Change output in dump_stack to also print source line. (Alexei)
* Simplify API to single pop() operation. (Eduard, Alexei)
* Add kdoc for bpf_dynptr_from_mem_slice.
* Fix -EINVAL returned from prog_dump_stream. (Eduard)
* Split dump_stack() patch into multiple commits.
* Add macro wrapping stream staging API.
* Change bpftool command from dump to tracelog. (Quentin)
* Add bpftool documentation and bash completion. (Quentin)
* Change license of bpftool to Dual BSD/GPL.
* Simplify memory allocator. (Alexei)
* No overflow into second page.
* Remove bpf_mem_alloc() fallback.
* Symlink bpftool BPF program and exercise as selftest. (Eduard)
* Verify output after dumping from ringbuf. (Eduard)
* More failure cases to check API invariants.
* Remove patches for dynptr lifetime fixes (split into separate set).
* Limit maximum error messages, and add stream capacity. (Eduard)
====================
Link: https://patch.msgid.link/20250703204818.925464-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add selftests to stress test the various facets of the stream API,
memory allocation pattern, and ensuring dumping support is tested and
functional.
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-13-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add support for printing the BPF stream contents of a program in
bpftool. The new bpftool prog tracelog command is extended to take
stdout and stderr arguments, and then the prog specification.
The bpf_prog_stream_read() API added in previous patch is simply reused
to grab data and then it is dumped to the respective file. The stdout
data is sent to stdout, and stderr is printed to stderr.
Cc: Quentin Monnet <qmo@kernel.org>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-12-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Introduce a libbpf API so that users can read data from a given BPF
stream for a BPF prog fd. For now, only the low-level syscall wrapper
is provided, we can add a bpf_program__* accessor as a follow up if
needed.
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-11-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a convenience macro to print data to the BPF streams. BPF_STDOUT and
BPF_STDERR stream IDs in the vmlinux.h can be passed to the macro to
print to the respective streams.
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-10-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Begin reporting rqspinlock deadlocks and timeout to BPF program's
stderr.
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-9-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Begin reporting may_goto timeouts to BPF program's stderr stream.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-8-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Introduce a kernel function which is the analogue of dump_stack()
printing some useful information and the stack trace. This is not
exposed to BPF programs yet, but can be made available in the future.
When we have a program counter for a BPF program in the stack trace,
also additionally output the filename and line number to make the trace
helpful. The rest of the trace can be passed into ./decode_stacktrace.sh
to obtain the line numbers for kernel symbols.
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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In preparation of figuring out the closest program that led to the
current point in the kernel, implement a function that scans through the
stack trace and finds out the closest BPF program when walking down the
stack trace.
Special care needs to be taken to skip over kernel and BPF subprog
frames. We basically scan until we find a BPF main prog frame. The
assumption is that if a program calls into us transitively, we'll
hit it along the way. If not, we end up returning NULL.
Contextually the function will be used in places where we know the
program may have called into us.
Due to reliance on arch_bpf_stack_walk(), this function only works on
x86 with CONFIG_UNWINDER_ORC, arm64, and s390. Remove the warning from
arch_bpf_stack_walk as well since we call it outside bpf_throw()
context.
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-6-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a warning to ensure RCU lock is held around tree lookup, and then
fix one of the invocations in bpf_stack_walker. The program has an
active stack frame and won't disappear. Use the opportunity to remove
unneeded invocation of is_bpf_text_address.
Fixes: f18b03fabaa9 ("bpf: Implement BPF exceptions")
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-5-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Prepare a function for use in future patches that can extract the file
info, line info, and the source line number for a given BPF program
provided it's program counter.
Only the basename of the file path is provided, given it can be
excessively long in some cases.
This will be used in later patches to print source info to the BPF
stream.
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add support for a stream API to the kernel and expose related kfuncs to
BPF programs. Two streams are exposed, BPF_STDOUT and BPF_STDERR. These
can be used for printing messages that can be consumed from user space,
thus it's similar in spirit to existing trace_pipe interface.
The kernel will use the BPF_STDERR stream to notify the program of any
errors encountered at runtime. BPF programs themselves may use both
streams for writing debug messages. BPF library-like code may use
BPF_STDERR to print warnings or errors on misuse at runtime.
The implementation of a stream is as follows. Everytime a message is
emitted from the kernel (directly, or through a BPF program), a record
is allocated by bump allocating from per-cpu region backed by a page
obtained using alloc_pages_nolock(). This ensures that we can allocate
memory from any context. The eventual plan is to discard this scheme in
favor of Alexei's kmalloc_nolock() [0].
This record is then locklessly inserted into a list (llist_add()) so
that the printing side doesn't require holding any locks, and works in
any context. Each stream has a maximum capacity of 4MB of text, and each
printed message is accounted against this limit.
Messages from a program are emitted using the bpf_stream_vprintk kfunc,
which takes a stream_id argument in addition to working otherwise
similar to bpf_trace_vprintk.
The bprintf buffer helpers are extracted out to be reused for printing
the string into them before copying it into the stream, so that we can
(with the defined max limit) format a string and know its true length
before performing allocations of the stream element.
For consuming elements from a stream, we expose a bpf(2) syscall command
named BPF_PROG_STREAM_READ_BY_FD, which allows reading data from the
stream of a given prog_fd into a user space buffer. The main logic is
implemented in bpf_stream_read(). The log messages are queued in
bpf_stream::log by the bpf_stream_vprintk kfunc, and then pulled and
ordered correctly in the stream backlog.
For this purpose, we hold a lock around bpf_stream_backlog_peek(), as
llist_del_first() (if we maintained a second lockless list for the
backlog) wouldn't be safe from multiple threads anyway. Then, if we
fail to find something in the backlog log, we splice out everything from
the lockless log, and place it in the backlog log, and then return the
head of the backlog. Once the full length of the element is consumed, we
will pop it and free it.
The lockless list bpf_stream::log is a LIFO stack. Elements obtained
using a llist_del_all() operation are in LIFO order, thus would break
the chronological ordering if printed directly. Hence, this batch of
messages is first reversed. Then, it is stashed into a separate list in
the stream, i.e. the backlog_log. The head of this list is the actual
message that should always be returned to the caller. All of this is
done in bpf_stream_backlog_fill().
From the kernel side, the writing into the stream will be a bit more
involved than the typical printk. First, the kernel typically may print
a collection of messages into the stream, and parallel writers into the
stream may suffer from interleaving of messages. To ensure each group of
messages is visible atomically, we can lift the advantage of using a
lockless list for pushing in messages.
To enable this, we add a bpf_stream_stage() macro, and require kernel
users to use bpf_stream_printk statements for the passed expression to
write into the stream. Underneath the macro, we have a message staging
API, where a bpf_stream_stage object on the stack accumulates the
messages being printed into a local llist_head, and then a commit
operation splices the whole batch into the stream's lockless log list.
This is especially pertinent for rqspinlock deadlock messages printed to
program streams. After this change, we see each deadlock invocation as a
non-interleaving contiguous message without any confusion on the
reader's part, improving their user experience in debugging the fault.
While programs cannot benefit from this staged stream writing API, they
could just as well hold an rqspinlock around their print statements to
serialize messages, hence this is kept kernel-internal for now.
Overall, this infrastructure provides NMI-safe any context printing of
messages to two dedicated streams.
Later patches will add support for printing splats in case of BPF arena
page faults, rqspinlock deadlocks, and cond_break timeouts, and
integration of this facility into bpftool for dumping messages to user
space.
[0]: https://lore.kernel.org/bpf/20250501032718.65476-1-alexei.starovoitov@gmail.com
Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Refactor code to be able to get and put bprintf buffers and use
bpf_printf_prepare independently. This will be used in the next patch to
implement BPF streams support, particularly as a staging buffer for
strings that need to be formatted and then allocated and pushed into a
stream.
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-2-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Show kprobe_multi link info with fdinfo, the info as follows:
link_type: kprobe_multi
link_id: 1
prog_tag: a69740b9746f7da8
prog_id: 21
kprobe_cnt: 8
missed: 0
cookie func
1 bpf_fentry_test1+0x0/0x20
7 bpf_fentry_test2+0x0/0x20
2 bpf_fentry_test3+0x0/0x20
3 bpf_fentry_test4+0x0/0x20
4 bpf_fentry_test5+0x0/0x20
5 bpf_fentry_test6+0x0/0x20
6 bpf_fentry_test7+0x0/0x20
8 bpf_fentry_test8+0x0/0x10
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Link: https://lore.kernel.org/r/20250702153958.639852-3-chen.dylane@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Show uprobe_multi link info with fdinfo, the info as follows:
link_type: uprobe_multi
link_id: 9
prog_tag: e729f789e34a8eca
prog_id: 39
uprobe_cnt: 3
pid: 0
path: /home/dylane/bpf/tools/testing/selftests/bpf/test_progs
cookie offset ref_ctr_offset
3 0xa69f13 0x0
1 0xa69f1e 0x0
2 0xa69f29 0x0
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Link: https://lore.kernel.org/r/20250702153958.639852-2-chen.dylane@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Alexei suggested, 'link_type' can be more precise and differentiate
for human in fdinfo. In fact BPF_LINK_TYPE_KPROBE_MULTI includes
kretprobe_multi type, the same as BPF_LINK_TYPE_UPROBE_MULTI, so we
can show it more concretely.
link_type: kprobe_multi
link_id: 1
prog_tag: d2b307e915f0dd37
...
link_type: kretprobe_multi
link_id: 2
prog_tag: ab9ea0545870781d
...
link_type: uprobe_multi
link_id: 9
prog_tag: e729f789e34a8eca
...
link_type: uretprobe_multi
link_id: 10
prog_tag: 7db356c03e61a4d4
Co-developed-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Link: https://lore.kernel.org/r/20250702153958.639852-1-chen.dylane@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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There's one case where ->d_compare() can be called for an in-lookup
dentry; usually that's nothing special from ->d_compare() point of
view, but... proc_sys_compare() is weird.
The thing is, /proc/sys subdirectories can look differently for
different processes. Up to and including having the same name
resolve to different dentries - all of them hashed.
The way it's done is ->d_compare() refusing to admit a match unless
this dentry is supposed to be visible to this caller. The information
needed to discriminate between them is stored in inode; it is set
during proc_sys_lookup() and until it's done d_splice_alias() we really
can't tell who should that dentry be visible for.
Normally there's no negative dentries in /proc/sys; we can run into
a dying dentry in RCU dcache lookup, but those can be safely rejected.
However, ->d_compare() is also called for in-lookup dentries, before
they get positive - or hashed, for that matter. In case of match
we will wait until dentry leaves in-lookup state and repeat ->d_compare()
afterwards. In other words, the right behaviour is to treat the
name match as sufficient for in-lookup dentries; if dentry is not
for us, we'll see that when we recheck once proc_sys_lookup() is
done with it.
While we are at it, fix the misspelled READ_ONCE and WRITE_ONCE there.
Fixes: d9171b934526 ("parallel lookups machinery, part 4 (and last)")
Reported-by: NeilBrown <neilb@brown.name>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
Driver Changes:
- Fix chunking the PTE updates and overflowing the maximum number of
dwords with with MI_STORE_DATA_IMM (Jia Yao)
- Move WA BB to the LRC BO to mitigate hangs on context switch (Matthew
Brost)
- Fix frequency/flush WAs for BMG (Vinay / Lucas)
- Fix kconfig prompt title and description (Lucas)
- Do not require kunit (Harry Austen / Lucas)
- Extend 14018094691 WA to BMG (Daniele)
- Fix wedging the device on signal (Matthew Brost)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/o5662wz6nrlf6xt5sjgxq5oe6qoujefzywuwblm3m626hreifv@foqayqydd6ig
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We've seen customers having shares mounted in paths like /??/C:/ or
/??/UNC/foo.example.com/share in order to get their native SMB
symlinks successfully followed from different mounts.
After commit 12b466eb52d9 ("cifs: Fix creating and resolving absolute NT-style symlinks"),
the client would then convert absolute paths from "/??/C:/" to "/mnt/c/"
by default. The absolute paths would vary depending on the value of
symlinkroot= mount option.
Fix this by restoring old behavior of not trying to convert absolute
paths by default. Only do this if symlinkroot= was _explicitly_ set.
Before patch:
$ mount.cifs //w22-fs0/test2 /mnt/1 -o vers=3.1.1,username=xxx,password=yyy
$ ls -l /mnt/1/symlink2
lrwxr-xr-x 1 root root 15 Jun 20 14:22 /mnt/1/symlink2 -> /mnt/c/testfile
$ mkdir -p /??/C:; echo foo > //??/C:/testfile
$ cat /mnt/1/symlink2
cat: /mnt/1/symlink2: No such file or directory
After patch:
$ mount.cifs //w22-fs0/test2 /mnt/1 -o vers=3.1.1,username=xxx,password=yyy
$ ls -l /mnt/1/symlink2
lrwxr-xr-x 1 root root 15 Jun 20 14:22 /mnt/1/symlink2 -> '/??/C:/testfile'
$ mkdir -p /??/C:; echo foo > //??/C:/testfile
$ cat /mnt/1/symlink2
foo
Cc: linux-cifs@vger.kernel.org
Reported-by: Pierguido Lambri <plambri@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Stefan Metzmacher <metze@samba.org>
Fixes: 12b466eb52d9 ("cifs: Fix creating and resolving absolute NT-style symlinks")
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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timing
When the SMB server reboots and the client immediately accesses the mount
point, a race condition can occur that causes operations to fail with
"Host is down" error.
Reproduction steps:
# Mount SMB share
mount -t cifs //192.168.245.109/TEST /mnt/ -o xxxx
ls /mnt
# Reboot server
ssh root@192.168.245.109 reboot
ssh root@192.168.245.109 /path/to/cifs_server_setup.sh
ssh root@192.168.245.109 systemctl stop firewalld
# Immediate access fails
ls /mnt
ls: cannot access '/mnt': Host is down
# But works if there is a delay
The issue is caused by a race condition between negotiate and reconnect.
The 20-second negotiate timeout mechanism can interfere with the normal
recovery process when both are triggered simultaneously.
ls cifsd
---------------------------------------------------
cifs_getattr
cifs_revalidate_dentry
cifs_get_inode_info
cifs_get_fattr
smb2_query_path_info
smb2_compound_op
SMB2_open_init
smb2_reconnect
cifs_negotiate_protocol
smb2_negotiate
cifs_send_recv
smb_send_rqst
wait_for_response
cifs_demultiplex_thread
cifs_read_from_socket
cifs_readv_from_socket
server_unresponsive
cifs_reconnect
__cifs_reconnect
cifs_abort_connection
mid->mid_state = MID_RETRY_NEEDED
cifs_wake_up_task
cifs_sync_mid_result
// case MID_RETRY_NEEDED
rc = -EAGAIN;
// In smb2_negotiate()
rc = -EHOSTDOWN;
The server_unresponsive() timeout triggers cifs_reconnect(), which aborts
ongoing mid requests and causes the ls command to receive -EAGAIN, leading
to -EHOSTDOWN.
Fix this by introducing a dedicated `neg_start` field to
precisely tracks when the negotiate process begins. The timeout check
now uses this accurate timestamp instead of `lstrp`, ensuring that:
1. Timeout is only triggered after negotiate has actually run for 20s
2. The mechanism doesn't interfere with concurrent recovery processes
3. Uninitialized timestamps (value 0) don't trigger false timeouts
Fixes: 7ccc1465465d ("smb: client: fix hang in wait_for_response() for negproto")
Signed-off-by: Wang Zhaolong <wangzhaolong@huaweicloud.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
- Fixed raw pointer leakage and unsafe behavior in printk()
. Switch from %pK to %p for pointer formatting, as %p is now safer
and prevents issues like raw pointer leakage and acquiring sleeping
locks in atomic contexts.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Inki Dae <inki.dae@samsung.com>
Link: https://lore.kernel.org/r/20250629091742.29956-1-inki.dae@samsung.com
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git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
Fixups
- Fixed raw pointer leakage and unsafe behavior in printk()
. Switch from %pK to %p for pointer formatting, as %p is now safer
and prevents issues like raw pointer leakage and acquiring sleeping
locks in atomic contexts.
- Fixed kernel panic during boot
. A NULL pointer dereference issue occasionally occurred
when the vblank interrupt handler was called before
the DRM driver was fully initialized during boot.
So this patch fixes the issue by adding a check in the interrupt handler
to ensure the DRM driver is properly initialized.
- Fixed a lockup issue on Samsung Peach-Pit/Pi Chromebooks
. The issue occurred after commit c9b1150a68d9 changed
the call order of CRTC enable/disable and bridge pre_enable/post_disable
methods, causing fimd_dp_clock_enable() to be called
before the FIMD device was activated. To fix this,
runtime PM guards were added to fimd_dp_clock_enable()
to ensure proper operation even when CRTC is not enabled.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Inki Dae <inki.dae@samsung.com>
Link: https://lore.kernel.org/r/20250629083554.28628-1-inki.dae@samsung.com
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https://gitlab.freedesktop.org/drm/i915/kernel into drm-fixes
- Make mei interrupt top half irq disabled to fix RT builds
- Fix timeline left held on VMA alloc error
- Fix NULL pointer deref in vlv_dphy_param_init()
- Fix selftest mock_request() to avoid NULL deref
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://lore.kernel.org/r/aGYVPAA4KvsZqDFx@jlahtine-mobl
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https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
drm-misc-fixes for v6.16-rc5:
- Replace simple panel lookup hack with proper fix.
- nullpointer deref in vesadrm fix.
- fix dma_resv_wait_timeout.
- fix error handling in ttm_buffer_object_transfer.
- bridge fixes.
- Fix vmwgfx accidentally allocating encrypted memory.
- Fix race in spsc_queue_push()
- Add refcount on backing GEM objects during fb creation.
- Fix v3d irq's being enabled during gpu reset.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://lore.kernel.org/r/a7461418-08dc-4b7c-b2fa-264155f66d5e@linux.intel.com
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In drm::Device::new() we allocate with __drm_dev_alloc() and return an
ARef<drm::Device>.
When the reference count of the drm::Device falls to zero, the C code
automatically calls drm_dev_release(), which eventually frees the memory
allocated in drm::Device::new().
However, due to that, drm::Device::drop() is never called. As a result
the destructor of the user's private data, i.e. drm::Device::data is
never called. Hence, fix this by calling drop_in_place() from the DRM
device's release callback.
Fixes: 1e4b8896c0f3 ("rust: drm: add device abstraction")
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20250629153747.72536-1-dakr@kernel.org
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soc-button-array hardcodes a debounce value by means of gpio_keys
which uses pinctrl-amd as a backend to program debounce for a GPIO.
This hardcoded value doesn't match what the firmware intended to be
programmed in _AEI. The hardcoded debounce leads to problems waking
from suspend. There isn't appetite to conditionalize the behavior in
soc-button-array or gpio-keys so clear it when the system suspends to
avoid problems with being able to resume.
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Hans de Goede <hansg@kernel.org>
Fixes: 5c4fa2a6da7fb ("Input: soc_button_array - debounce the buttons")
Link: https://lore.kernel.org/linux-input/mkgtrb5gt7miyg6kvqdlbu4nj3elym6ijudobpdi26gp4xxay5@rsa6ytrjvj2q/
Link: https://lore.kernel.org/linux-input/20250625215813.3477840-1-superm1@kernel.org/
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/20250627150155.3311574-1-superm1@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This fixes a bunch of command hangs after runtime suspend/resume.
This fixes a regression caused by code movement in the commit below,
the commit seems to just change timings enough to cause this to happen
now, and adding the sleep seems to avoid it.
I've spent some time trying to root cause it to no great avail,
it seems like a bug on the firmware side, but it could be a bug
in our rpc handling that I can't find.
Either way, we should land the workaround to fix the problem,
while we continue to work out the root cause.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Cc: Ben Skeggs <bskeggs@nvidia.com>
Cc: Danilo Krummrich <dakr@kernel.org>
Fixes: c21b039715ce ("drm/nouveau/gsp: add hals for fbsr.suspend/resume()")
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20250702232707.175679-1-airlied@gmail.com
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Ihor Solodrai says:
====================
bpf: add bpf_dynptr_memset() kfunc
Implement bpf_dynptr_memset() kfunc and add tests for it.
v3->v4:
* do error checks after slice, nits
v2->v3:
* nits and slow-path loop rewrite (Andrii)
* simplify xdp chunks test (Mykyta)
v1->v2:
* handle non-linear buffers with bpf_dynptr_write()
* change function signature to include offset arg
* add more test cases
v3: https://lore.kernel.org/bpf/20250630212113.573097-1-isolodrai@meta.com/
v2: https://lore.kernel.org/bpf/20250624205240.1311453-1-isolodrai@meta.com/
v1: https://lore.kernel.org/bpf/20250618223310.3684760-1-isolodrai@meta.com/
====================
Link: https://patch.msgid.link/20250702210309.3115903-1-isolodrai@meta.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
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Add tests to verify the behavior of bpf_dynptr_memset():
* normal memset 0
* normal memset non-0
* memset with an offset
* memset in dynptr that was adjusted
* error: size overflow
* error: offset+size overflow
* error: readonly dynptr
* memset into non-linear xdp dynptr
Signed-off-by: Ihor Solodrai <isolodrai@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Link: https://lore.kernel.org/bpf/20250702210309.3115903-3-isolodrai@meta.com
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Currently there is no straightforward way to fill dynptr memory with a
value (most commonly zero). One can do it with bpf_dynptr_write(), but
a temporary buffer is necessary for that.
Implement bpf_dynptr_memset() - an analogue of memset() from libc.
Signed-off-by: Ihor Solodrai <isolodrai@meta.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250702210309.3115903-2-isolodrai@meta.com
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If CONFIG_DEBUG_FS is enabled, nouveau_drm_init() returns an error if it
fails to create the "nouveau" directory in debugfs. One case where that
will happen is when debugfs access is restricted by
CONFIG_DEBUG_FS_ALLOW_NONE or by the boot parameter debugfs=off, which
cause the debugfs APIs to return -EPERM.
So just ignore errors from debugfs. Note that nouveau_debugfs_root may
be an error now, but that is a standard pattern for debugfs. From
include/linux/debugfs.h:
"NOTE: it's expected that most callers should _ignore_ the errors
returned by this function. Other debugfs functions handle the fact that
the "dentry" passed to them could be an error and they don't crash in
that case. Drivers should generally work fine even if debugfs fails to
init anyway."
Fixes: 97118a1816d2 ("drm/nouveau: create module debugfs root")
Cc: stable@vger.kernel.org
Signed-off-by: Aaron Thompson <dev@aaront.org>
Acked-by: Timur Tabi <ttabi@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://lore.kernel.org/r/20250703211949.9916-1-dev@aaront.org
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- tree-log fixes:
- fixes of log tracking of directories and subvolumes
- fix iteration and error handling of inode references
during log replay
- fix free space tree rebuild (reported by syzbot)
* tag 'for-6.16-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: use btrfs_record_snapshot_destroy() during rmdir
btrfs: propagate last_unlink_trans earlier when doing a rmdir
btrfs: record new subvolume in parent dir earlier to avoid dir logging races
btrfs: fix inode lookup error handling during log replay
btrfs: fix iteration of extrefs during log replay
btrfs: fix missing error handling when searching for inode refs during log replay
btrfs: fix failure to rebuild free space tree using multiple transactions
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Driver fixes plus core sd.c fix are all small and obvious.
The larger change to hosts.c is less obvious, but required to avoid
data corruption caused by bio splitting"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: core: Fix spelling of a sysfs attribute name
scsi: core: Enforce unlimited max_segment_size when virt_boundary_mask is set
scsi: RDMA/srp: Don't set a max_segment_size when virt_boundary_mask is set
scsi: sd: Fix VPD page 0xb7 length check
scsi: qla4xxx: Fix missing DMA mapping error in qla4xxx_alloc_pdu()
scsi: qla2xxx: Fix DMA mapping test in qla24xx_get_port_database()
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Commit 88c02b3f79a6 ("s390/sha3: Support sha3 performance enhancements")
added the field s390_sha_ctx::first_message_part and made it be used by
s390_sha_update() (now s390_sha_update_blocks()). At the time,
s390_sha_update() was used by all the s390 SHA-1, SHA-2, and SHA-3
algorithms. However, only the initialization functions for SHA-3 were
updated, leaving SHA-1 and SHA-2 using first_message_part uninitialized.
This could cause e.g. the function code CPACF_KIMD_SHA_512 |
CPACF_KIMD_NIP to be used instead of just CPACF_KIMD_SHA_512. This
apparently was harmless, as the SHA-1 and SHA-2 function codes ignore
CPACF_KIMD_NIP; it is recognized only by the SHA-3 function codes
(https://lore.kernel.org/r/73477fe9-a1dc-4e38-98a6-eba9921e8afa@linux.ibm.com/).
Therefore, this bug was found only when first_message_part was later
converted to a boolean and UBSAN detected its uninitialized use.
Regardless, let's fix this by just initializing to zero.
Note: in 6.16, we need to patch SHA-1, SHA-384, and SHA-512. In 6.15
and earlier, we'll also need to patch SHA-224 and SHA-256, as they
hadn't yet been librarified (which incidentally fixed this bug).
Fixes: 88c02b3f79a6 ("s390/sha3: Support sha3 performance enhancements")
Cc: stable@vger.kernel.org
Reported-by: Ingo Franzki <ifranzki@linux.ibm.com>
Closes: https://lore.kernel.org/r/12740696-595c-4604-873e-aefe8b405fbf@linux.ibm.com
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20250703172316.7914-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from Bluetooth.
Current release - new code bugs:
- eth:
- txgbe: fix the issue of TX failure
- ngbe: specify IRQ vector when the number of VFs is 7
Previous releases - regressions:
- sched: always pass notifications when child class becomes empty
- ipv4: fix stat increase when udp early demux drops the packet
- bluetooth: prevent unintended pause by checking if advertising is active
- virtio: fix error reporting in virtqueue_resize
- eth:
- virtio-net:
- ensure the received length does not exceed allocated size
- fix the xsk frame's length check
- lan78xx: fix WARN in __netif_napi_del_locked on disconnect
Previous releases - always broken:
- bluetooth: mesh: check instances prior disabling advertising
- eth:
- idpf: convert control queue mutex to a spinlock
- dpaa2: fix xdp_rxq_info leak
- amd-xgbe: align CL37 AN sequence as per databook"
* tag 'net-6.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (38 commits)
vsock/vmci: Clear the vmci transport packet properly when initializing it
dt-bindings: net: sophgo,sg2044-dwmac: Drop status from the example
net: ngbe: specify IRQ vector when the number of VFs is 7
net: wangxun: revert the adjustment of the IRQ vector sequence
net: txgbe: request MISC IRQ in ndo_open
virtio_net: Enforce minimum TX ring size for reliability
virtio_net: Cleanup '2+MAX_SKB_FRAGS'
virtio_ring: Fix error reporting in virtqueue_resize
virtio-net: xsk: rx: fix the frame's length check
virtio-net: use the check_mergeable_len helper
virtio-net: remove redundant truesize check with PAGE_SIZE
virtio-net: ensure the received length does not exceed allocated size
net: ipv4: fix stat increase when udp early demux drops the packet
net: libwx: fix the incorrect display of the queue number
amd-xgbe: do not double read link status
net/sched: Always pass notifications when child class becomes empty
nui: Fix dma_mapping_error() check
rose: fix dangling neighbour pointers in rose_rt_device_down()
enic: fix incorrect MTU comparison in enic_change_mtu()
amd-xgbe: align CL37 AN sequence as per databook
...
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Pull xfs fixes from Carlos Maiolino:
- Fix umount hang with unflushable inodes (and add new tracepoint used
for debugging this)
- Fix ABBA deadlock in xfs_reclaim_inode() vs xfs_ifree_cluster()
- Fix dquot buffer pin deadlock
* tag 'xfs-fixes-6.16-rc5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: add FALLOC_FL_ALLOCATE_RANGE to supported flags mask
xfs: fix unmount hang with unflushable inodes stuck in the AIL
xfs: factor out stale buffer item completion
xfs: rearrange code in xfs_buf_item.c
xfs: add tracepoints for stale pinned inode state debug
xfs: avoid dquot buffer pin deadlock
xfs: catch stale AGF/AGF metadata
xfs: xfs_ifree_cluster vs xfs_iflush_shutdown_abort deadlock
xfs: actually use the xfs_growfs_check_rtgeom tracepoint
xfs: Improve error handling in xfs_mru_cache_create()
xfs: move xfs_submit_zoned_bio a bit
xfs: use xfs_readonly_buftarg in xfs_remount_rw
xfs: remove NULL pointer checks in xfs_mru_cache_insert
xfs: check for shutdown before going to sleep in xfs_select_zone
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Pull NVMe fixes from Christoph:
"- fix incorrect cdw15 value in passthru error logging (Alok Tiwari)
- fix memory leak of bio integrity in nvmet (Dmitry Bogdanov)
- refresh visible attrs after being checked (Eugen Hristev)
- fix suspicious RCU usage warning in the multipath code (Geliang Tang)
- correctly account for namespace head reference counter (Nilay Shroff)"
* tag 'nvme-6.16-2025-07-03' of git://git.infradead.org/nvme:
nvme-multipath: fix suspicious RCU usage warning
nvme-pci: refresh visible attrs after being checked
nvmet: fix memory leak of bio integrity
nvme: correctly account for namespace head reference counter
nvme: Fix incorrect cdw15 value in passthru error logging
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Upon receiving HCI_EVT_LE_BIG_SYNC_ESTABLISHED with status 0x00
(success) the corresponding BIS hci_conn state shall be set to
BT_CONNECTED otherwise they will be left with BT_OPEN which is invalid
at that point, also create the debugfs and sysfs entries following the
same logic as the likes of Broadcast Source BIS and CIS connections.
Fixes: f777d8827817 ("Bluetooth: ISO: Notify user space about failed bis connections")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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|
BIS/PA connections do have their own cleanup proceedure which are
performed by hci_conn_cleanup/bis_cleanup.
Fixes: 23205562ffc8 ("Bluetooth: separate CIS_LINK and BIS_LINK link types")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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hci_conn_hash_lookup_big_state
The check for destination to be BDADDR_ANY is no longer necessary with
the introduction of BIS_LINK.
Fixes: 23205562ffc8 ("Bluetooth: separate CIS_LINK and BIS_LINK link types")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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As the code comments on hci_setup_ext_adv_instance_sync suggests the
advertising instance needs to be disabled in order to update its
parameters, but it was wrongly checking that !adv->pending.
Fixes: cba6b758711c ("Bluetooth: hci_sync: Make use of hci_cmd_sync_queue set 2")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux into arm/fixes
Apple SoC fixes for 6.16
One devicetree fix for a dtbs_warning that's been present for a while:
- Rename the PCIe BCM4377 node to conform to the devicetree binding
schema
Two devicetree fixes for W=1 warnings that have been introduced recently:
- Drop {address,size}-cells from SPI NOR which doesn't have any child
nodes such that these don't make sense
- Move touchbar mipi {address,size}-cells from the dtsi file where the
node is disabled and has no children to the dts file where it's
enabled and its children are declared
Signed-off-by: Sven Peter <sven@kernel.org>
* tag 'apple-soc-fixes-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux:
arm64: dts: apple: Move touchbar mipi {address,size}-cells from dtsi to dts
arm64: dts: apple: Drop {address,size}-cells from SPI NOR
arm64: dts: apple: t8103: Fix PCIe BCM4377 nodename
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https://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee into arm/fixes
A fix in the OP-TEE driver for v6.16
Fixing a sleep in atomic context in the FF-A notification callback by
adding a work queue to process in a non-atomic context.
* tag 'optee-fix-for-v6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee:
optee: ffa: fix sleep in atomic context
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/fixes
Samsung SoC fixes for v6.16
1. Correct CONFIG option in arm64 defconfig enabling the Qualcomm SoC
SNPS EUSB2 phy driver, because Kconfig entry was renamed when
changing the driver to a common one, shared with Samsung SoC, thus
defconfig lost that driver effectively.
2. Exynos ACPM: Fix timeouts happening with multiple requests.
* tag 'samsung-fixes-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
firmware: exynos-acpm: fix timeouts on xfers handling
arm64: defconfig: update renamed PHY_SNPS_EUSB2
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When a user closes an exec queue or interrupts an app with Ctrl-C,
this does not warrant wedging the device in mode 2.
Avoid this by skipping the wedge check for killed exec queues in
the TDR and LR exec queue cleanup worker.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250624174103.2707941-1-matthew.brost@intel.com
(cherry picked from commit 5a2f117a80c207372513ca8964eeb178874f4990)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
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This WA is applicable to BMG as well.
Note that this is a GSC WA and we don't load the GSC on BMG, so
extending the WA to BMG won't do anything right now. However, it helps
future-proof the driver so that if we ever turn the GSC on we won't have
to remember to extend this WA.
v2: don't use VERSION_RANGE from 2001 to 2004 (Matt)
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20250613231128.1261815-2-daniele.ceraolospurio@intel.com
(cherry picked from commit 1a5ce0c5b95b0624ebd44f574b98003a466973be)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
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