6.6-stable review patch. If anyone has any objections, please let me know.
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From: Masami Hiramatsu (Google) mhiramat@kernel.org
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@d...
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 --- kernel/trace/trace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -2053,7 +2053,7 @@ static inline bool is_good_system_name(c static inline void sanitize_event_name(char *name) { while (*name++ != '\0') - if (*name == ':' || *name == '.') + if (*name == ':' || *name == '.' || *name == '*') *name = '_'; }