diff options
| author | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2025-08-16 23:10:51 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:34:15 +0200 |
| commit | 918974a4bd807da05b4678a7eaaa84ffd87a3f2a (patch) | |
| tree | 49052f915290854f4e13ca67d8113f0381e38ca7 | |
| parent | 8c9ee2e4f58ea395cfd4b0916aa6c9ddfbb7df2c (diff) | |
tracing: fprobe-event: Sanitize wildcard for fprobe event name
commit ec879e1a0be8007aa232ffedcf6a6445dfc1a3d7 upstream.
Fprobe event accepts wildcards for the target functions, but unless user
specifies its event name, it makes an event with the wildcards.
/sys/kernel/tracing # echo 'f mutex*' >> dynamic_events
/sys/kernel/tracing # cat dynamic_events
f:fprobes/mutex*__entry mutex*
/sys/kernel/tracing # ls events/fprobes/
enable filter mutex*__entry
To fix this, replace the wildcard ('*') with an underscore.
Link: https://lore.kernel.org/all/175535345114.282990.12294108192847938710.stgit@devnote2/
Fixes: 334e5519c375 ("tracing/probes: Add fprobe events for tracing function entry and exit.")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | kernel/trace/trace.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index bd084953a98b..f24affa252bc 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -2204,7 +2204,7 @@ static inline bool is_good_system_name(const char *name) static inline void sanitize_event_name(char *name) { while (*name++ != '\0') - if (*name == ':' || *name == '.') + if (*name == ':' || *name == '.' || *name == '*') *name = '_'; } |