5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nikolay Kuratov kniv@yandex-team.ru
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.b3ddb33a8167013b9b... 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 --- v1 -> v2: * Reword commit title and message * Send for stable instead of mainline
kernel/trace/trace_kprobe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1663,7 +1663,7 @@ create_local_trace_kprobe(char *func, vo int ret; char *event;
- if (func) { + if (func && !strchr(func, ':')) { unsigned int count;
count = number_of_same_symbols(func);