perf: Ensure bpf_perf_link path is properly serialized

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[ Upstream commit 7ed9138a72 ]

Ravi reported that the bpf_perf_link_attach() usage of
perf_event_set_bpf_prog() is not serialized by ctx->mutex, unlike the
PERF_EVENT_IOC_SET_BPF case.

Reported-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ravi Bangoria <ravi.bangoria@amd.com>
Link: https://lkml.kernel.org/r/20250307193305.486326750@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Peter Zijlstra 2025-01-17 10:54:50 +01:00 • committed by Greg Kroah-Hartman

parent 1c09795ece

commit f351bb3085

1 changed files with 30 additions and 4 deletions

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kernel/events/core.c

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