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ceph: fix null pointer dereference in ceph_flush_snaps() 

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2016-08-04 08:43:33 +08:00 committed by Ilya Dryomov
parent 864364a29c
commit e4d2b16a44
1 changed files with 4 additions and 1 deletions
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5
fs/ceph/caps.c
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@ -1347,9 +1347,12 @@ void ceph_flush_snaps(struct ceph_inode_info *ci,
{ {
struct inode *inode = &ci->vfs_inode; struct inode *inode = &ci->vfs_inode;
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; 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; int mds;
dout("ceph_flush_snaps %p\n", inode); dout("ceph_flush_snaps %p\n", inode);
if (psession)
session = *psession;
retry: retry:
spin_lock(&ci->i_ceph_lock); spin_lock(&ci->i_ceph_lock);
if (!(ci->i_ceph_flags & CEPH_I_FLUSH_SNAPS)) { if (!(ci->i_ceph_flags & CEPH_I_FLUSH_SNAPS)) {