shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 02:21:52 +09:00
Code Issues Packages Projects Releases Wiki Activity

tracing/kprobes: Skip symbol counting logic for module symbols in create_local_trace_kprobe()

Browse Source 
commit b022f0c7e4 ("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: b022f0c7e4 ("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>
This commit is contained in:
Nikolay Kuratov
2024-12-16 14:19:23 +03:00
committed by Greg Kroah-Hartman
parent 60fd3538d2
commit b070291c83
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/trace/trace_kprobe.c
View File

@@ -1816,7 +1816,7 @@ create_local_trace_kprobe(char *func, void *addr, unsigned long offs,
int ret;
char *event;
if (func) {
if (func && !strchr(func, ':')) {
unsigned int count;
count = number_of_same_symbols(func);