Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Pull bpf fixes from Alexei Starovoitov:

- Fix interaction between livepatch and BPF fexit programs (Song Liu)
With

Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Pull bpf fixes from Alexei Starovoitov:

- Fix interaction between livepatch and BPF fexit programs (Song Liu)
With Steven and Masami acks.

- Fix stack ORC unwind from BPF kprobe_multi (Jiri Olsa)
With Steven and Masami acks.

- Fix out of bounds access in widen_imprecise_scalars() in the verifier
(Eduard Zingerman)

- Fix conflicts between MPTCP and BPF sockmap (Jiayuan Chen)

- Fix net_sched storage collision with BPF data_meta/data_end (Eric
Dumazet)

- Add _impl suffix to BPF kfuncs with implicit args to avoid breaking
them in bpf-next when KF_IMPLICIT_ARGS is added (Mykyta Yatsenko)

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
selftests/bpf: Test widen_imprecise_scalars() with different stack depth
bpf: account for current allocated stack depth in widen_imprecise_scalars()
bpf: Add bpf_prog_run_data_pointers()
selftests/bpf: Add mptcp test with sockmap
mptcp: Fix proto fallback detection with BPF
mptcp: Disallow MPTCP subflows from sockmap
selftests/bpf: Add stacktrace ips test for raw_tp
selftests/bpf: Add stacktrace ips test for kprobe_multi/kretprobe_multi
x86/fgraph,bpf: Fix stack ORC unwind from kprobe_multi return probe
Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()"
bpf: add _impl suffix for bpf_stream_vprintk() kfunc
bpf:add _impl suffix for bpf_task_work_schedule* kfuncs
selftests/bpf: Add tests for livepatch + bpf trampoline
ftrace: bpf: Fix IPMODIFY + DIRECT in modify_ftrace_direct()
ftrace: Fix BPF fexit with livepatch

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Merge branch 'x86-fgraph-bpf-fix-orc-stack-unwind-from-return-probe'

Jiri Olsa says:

====================
x86/fgraph,bpf: Fix ORC stack unwind from return probe

sending fix for ORC stack unwind is

Merge branch 'x86-fgraph-bpf-fix-orc-stack-unwind-from-return-probe'

Jiri Olsa says:

====================
x86/fgraph,bpf: Fix ORC stack unwind from return probe

sending fix for ORC stack unwind issue reported in here [1], where
the ORC unwinder won't go pass the return_to_handler function and
we get no stacktrace.

Sending fix for that together with unrelated stacktrace fix (patch 1),
so the attached test can work properly.

It's based on:
https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
probes/for-next

v1: https://lore.kernel.org/bpf/20251027131354.1984006-1-jolsa@kernel.org/
v2: https://lore.kernel.org/bpf/20251103220924.36371-3-jolsa@kernel.org/

v3 changes:
- fix assert condition in test

thanks,
jirka

[1] https://lore.kernel.org/bpf/aObSyt3qOnS_BMcy@krava/
====================

Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://patch.msgid.link/20251104215405.168643-1-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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selftests/bpf: Add stacktrace ips test for raw_tp

Adding test that verifies we get expected initial 2 entries from
stacktrace for rawtp probe via ORC unwind.

Signed-off-by: Jiri Olsa <jolsa@kernel.

selftests/bpf: Add stacktrace ips test for raw_tp

Adding test that verifies we get expected initial 2 entries from
stacktrace for rawtp probe via ORC unwind.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20251104215405.168643-5-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>

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selftests/bpf: Add stacktrace ips test for kprobe_multi/kretprobe_multi

Adding test that attaches kprobe/kretprobe multi and verifies the
ORC stacktrace matches expected functions.

Adding bpf_testm

selftests/bpf: Add stacktrace ips test for kprobe_multi/kretprobe_multi

Adding test that attaches kprobe/kretprobe multi and verifies the
ORC stacktrace matches expected functions.

Adding bpf_testmod_stacktrace_test function to bpf_testmod kernel
module which is called through several functions so we get reliable
call path for stacktrace.

The test is only for ORC unwinder to keep it simple.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20251104215405.168643-4-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>

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