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tracing/user_events: Fix call print_fmt leak

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[ Upstream commit 4bded7af8b ]

If user_event_trace_register() fails within user_event_parse() the
call's print_fmt member is not freed. Add kfree call to fix this.

Link: https://lkml.kernel.org/r/20221123183248.554-1-beaub@linux.microsoft.com

Fixes: aa3b2b4c66 ("user_events: Add print_fmt generation support for basic types")
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Beau Belgrave 2022-11-23 10:32:48 -08:00 committed by Greg Kroah-Hartman
parent e4b7d7297d
commit 0a022b756f
1 changed files with 1 additions and 0 deletions
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1
kernel/trace/trace_events_user.c
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@ -1359,6 +1359,7 @@ static int user_event_parse(struct user_event_group *group, char *name,
put_user:
user_event_destroy_fields(user);
user_event_destroy_validators(user);
kfree(user->call.print_fmt);
kfree(user);
return ret;
}