1 files changed, 2 insertions, 1 deletions

diff --git a/ipc/shm.c b/ipc/shm.c
index 8c9402d298a0..de389e639e7e 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -1042,7 +1042,8 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
                           is_file_hugepages(shp->shm_file) ?
                                 &shm_file_operations_huge :
                                 &shm_file_operations);
-        if (!file)
+        err = PTR_ERR(file);
+        if (IS_ERR(file))
                 goto out_free;
 
         file->private_data = sfd;