[PATCH 11/12] trace: use prepare credential guard

[Christian Brauner]

Use the prepare credential guard for allocating a new set of
credentials.

Signed-off-by: Christian Brauner <brau...@kernel.org>
---
 kernel/trace/trace_events_user.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c
index c428dafe7496..3461b1d29276 100644
--- a/kernel/trace/trace_events_user.c
+++ b/kernel/trace/trace_events_user.c
@@ -1453,8 +1453,7 @@ static int user_event_set_call_visible(struct user_event 
*user, bool visible)
        const struct cred *old_cred;
        struct cred *cred;
 
-       cred = prepare_creds();
-
+       CLASS(prepare_creds, cred)();
        if (!cred)
                return -ENOMEM;
 
@@ -1477,7 +1476,6 @@ static int user_event_set_call_visible(struct user_event 
*user, bool visible)
                ret = trace_remove_event_call(&user->call);
 
        revert_creds(old_cred);
-       put_cred(cred);
 
        return ret;
 }

-- 
2.47.3