author: Minghao Chi <chi.minghao@zte.com.cn> 2022-02-03 20:49:33 -0800
committer: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2022-02-08 18:35:07 +0100
commit: 3b6b7cbe466da765b22b9a47628f69df62d24372
parent: 2e45c87df3899708f167efef75095f0e3458fd7a
Commit Summary:
Diffstat:
1 file changed, 2 insertions, 1 deletion
diff --git a/ipc/sem.c b/ipc/sem.c
index 6693daf4fe11..0dbdb98fdf2d 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -1964,6 +1964,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
*/
un = lookup_undo(ulp, semid);
if (un) {
+ spin_unlock(&ulp->lock);
kvfree(new);
goto success;
}
@@ -1976,9 +1977,8 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
ipc_assert_locked_object(&sma->sem_perm);
list_add(&new->list_id, &sma->list_id);
un = new;
-
-success:
spin_unlock(&ulp->lock);
+success:
sem_unlock(sma, -1);
out:
return un;