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| author | Yan, Zheng <zyan@redhat.com> | 2016-08-04 08:43:33 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-08-08 21:41:43 +0200 |
| commit | e4d2b16a445f85b7dc3fc67b21756eca515e0c74 (patch) | |
| tree | f56809a2002a559d3e1d07b4d4fd1c2038d35045 /fs/ceph | |
| parent | 864364a29c26ed83b3eeca5fa278468dc3ae9ed4 (diff) | |
| download | lwn-e4d2b16a445f85b7dc3fc67b21756eca515e0c74.tar.gz lwn-e4d2b16a445f85b7dc3fc67b21756eca515e0c74.zip | |
ceph: fix null pointer dereference in ceph_flush_snaps()
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/caps.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 99115cae1652..16e6ded0b7f2 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -1347,9 +1347,12 @@ void ceph_flush_snaps(struct ceph_inode_info *ci, { struct inode *inode = &ci->vfs_inode; struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; - struct ceph_mds_session *session = *psession; + struct ceph_mds_session *session = NULL; int mds; + dout("ceph_flush_snaps %p\n", inode); + if (psession) + session = *psession; retry: spin_lock(&ci->i_ceph_lock); if (!(ci->i_ceph_flags & CEPH_I_FLUSH_SNAPS)) { |