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tracing/user_events: Fix memory leak in user_event_create()

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Before current_user_event_group(), it has allocated memory and save it
in @name, this should freed before return error.

Link: https://lkml.kernel.org/r/20221115014445.158419-1-xiujianfeng@huawei.com

Fixes: e5d271812e ("tracing/user_events: Move pages/locks into groups to prepare for namespaces")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Xiu Jianfeng 2022-11-15 09:44:45 +08:00 committed by Steven Rostedt (Google)
parent 0a068f4a71
commit ccc6e59007
1 changed files with 3 additions and 1 deletions
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4
kernel/trace/trace_events_user.c
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@ -1100,8 +1100,10 @@ static int user_event_create(const char *raw_command)
group = current_user_event_group();
if (!group)
if (!group) {
kfree(name);
return -ENOENT;
}
mutex_lock(&group->reg_mutex);