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Subject[for-linus][PATCH 2/6] tracing/user_events: Fix memory leak in user_event_create()
From: Xiu Jianfeng <xiujianfeng@huawei.com>

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: e5d271812e7a ("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>
---
kernel/trace/trace_events_user.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index ae78c2d53c8a..539b08ae7020 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -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);

--
2.35.1

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