]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
tracing/kprobes: Skip symbol counting logic for module symbols in create_local_trace_...
authorNikolay Kuratov <kniv@yandex-team.ru>
Mon, 16 Dec 2024 11:19:23 +0000 (14:19 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 19 Dec 2024 17:08:57 +0000 (18:08 +0100)
commitb070291c83a6e7bd7ac4e1bb197655aea29b620f
treef9db9d70fdb5d8bafcafa62d6b04efe2339437c0
parent60fd3538d2a8fd44c41d25088c0ece3e1fd30659
tracing/kprobes: Skip symbol counting logic for module symbols in create_local_trace_kprobe()

commit b022f0c7e404 ("tracing/kprobes: Return EADDRNOTAVAIL when func matches several symbols")
avoids checking number_of_same_symbols() for module symbol in
__trace_kprobe_create(), but create_local_trace_kprobe() should avoid this
check too. Doing this check leads to ENOENT for module_name:symbol_name
constructions passed over perf_event_open.

No bug in newer kernels as it was fixed more generally by
commit 9d8616034f16 ("tracing/kprobes: Add symbol counting check when module loads")

Link: https://lore.kernel.org/linux-trace-kernel/20240705161030.b3ddb33a8167013b9b1da202@kernel.org
Fixes: b022f0c7e404 ("tracing/kprobes: Return EADDRNOTAVAIL when func matches several symbols")
Signed-off-by: Nikolay Kuratov <kniv@yandex-team.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel/trace/trace_kprobe.c