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authorYan, Zheng <zyan@redhat.com>2016-06-15 20:51:22 +0800
committerIlya Dryomov <idryomov@gmail.com>2016-07-28 02:55:40 +0200
commitfce8515741dfb6a233927262555295788ad22ca7 (patch)
treefcd383bba57d18d30bc6a983c2137d4908064fb8 /fs/ceph/snap.c
parent9a5530c63889ac928a45c4645ab0bc23b4fbfcb8 (diff)
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ceph: fix NULL dereference in ceph_queue_cap_snap()
old_snapc->seq is used in dout(...) Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph/snap.c')
-rw-r--r--fs/ceph/snap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index 9caaa7ffc93f..eadf2c33edc6 100644
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -551,7 +551,6 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
ci->i_wrbuffer_ref_head = 0;
capsnap->context = old_snapc;
list_add_tail(&capsnap->ci_item, &ci->i_cap_snaps);
- old_snapc = NULL;
if (used & CEPH_CAP_FILE_WR) {
dout("queue_cap_snap %p cap_snap %p snapc %p"
@@ -563,6 +562,7 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
__ceph_finish_cap_snap(ci, capsnap);
}
capsnap = NULL;
+ old_snapc = NULL;
update_snapc:
if (ci->i_head_snapc) {