From: Masami Hiramatsu (Google) <[email protected]>
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.
Fixes: 334e5519c375 ("tracing/probes: Add fprobe events for tracing function
entry and exit.")
Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
Cc: [email protected]
---
kernel/trace/trace.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 1dbf1d3cf2f1..5a6688832da8 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 = '_';
}
