ceph: fix unaligned access in ceph_send_cap_releases

Signed-off-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
mariux64 · May 7, 2019 · 4198aba · 4198aba
1 parent b726ec9
commit 4198aba
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
@@ -1855,7 +1855,8 @@ static void ceph_send_cap_releases(struct ceph_mds_client *mdsc,
 		num_cap_releases--;
 
 		head = msg->front.iov_base;
-		le32_add_cpu(&head->num, 1);
+		put_unaligned_le32(get_unaligned_le32(&head->num) + 1,
+				   &head->num);
 		item = msg->front.iov_base + msg->front.iov_len;
 		item->ino = cpu_to_le64(cap->cap_ino);
 		item->cap_id = cpu_to_le64(cap->cap_id);