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| author | sunliming <sunliming@kylinos.cn> | 2023-05-29 08:51:10 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-06-14 18:41:52 +0200 |
| commit | cfac4ed7279d056df6167bd665e460787dc9e0c4 (patch) | |
| tree | 964993a76059a21dde956cf25280732d8e35d002 /kernel/trace | |
| parent | tracing/user_events: Prevent same name but different args event (diff) | |
| download | linux-cfac4ed7279d056df6167bd665e460787dc9e0c4.tar.xz linux-cfac4ed7279d056df6167bd665e460787dc9e0c4.zip | |
tracing/user_events: Handle matching arguments that is null from dyn_events
When A registering user event from dyn_events has no argments, it will pass the
matching check, regardless of whether there is a user event with the same name
and arguments. Add the matching check when the arguments of registering user
event is null.
Link: https://lore.kernel.org/linux-trace-kernel/20230529065110.303440-1-sunliming@kylinos.cn
Signed-off-by: sunliming <sunliming@kylinos.cn>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_events_user.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c index 37a38496a6be..afe61dc86543 100644 --- a/kernel/trace/trace_events_user.c +++ b/kernel/trace/trace_events_user.c @@ -1745,6 +1745,8 @@ static bool user_event_match(const char *system, const char *event, if (match && argc > 0) match = user_fields_match(user, argc, argv); + else if (match && argc == 0) + match = list_empty(&user->fields); return match; } |