tree 1544bc4e5ac8b4588f015352e83f5595e70755b7
parent c2c6d3ce0d9a1fae4472fc10755372d022a487a4
author Luis Henriques <lhenriques@suse.com> 1541444452 +0000
committer Ilya Dryomov <idryomov@gmail.com> 1541695871 +0100

ceph: quota: fix null pointer dereference in quota check

This patch fixes a possible null pointer dereference in
check_quota_exceeded, detected by the static checker smatch, with the
following warning:

   fs/ceph/quota.c:240 check_quota_exceeded()
    error: we previously assumed 'realm' could be null (see line 188)

Fixes: b7a2921765cf ("ceph: quota: support for ceph.quota.max_files")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>