tree ed2d4b7c5dfd69bf67280516e73e43a89525dbcc
parent 88213ab3d0c9ba59233a6c8afa07ca5e662cebfa
author Ronnie Sahlberg <lsahlber@redhat.com> 1579655276 +1000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1582900959 +0100

cifs: fix NULL dereference in match_prepath

[ Upstream commit fe1292686333d1dadaf84091f585ee903b9ddb84 ]

RHBZ: 1760879

Fix an oops in match_prepath() by making sure that the prepath string is not
NULL before we pass it into strcmp().

This is similar to other checks we make for example in cifs_root_iget()

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>