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ceph: fix NULL dereference in ceph_queue_cap_snap()

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old_snapc->seq is used in dout(...)

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2016-06-15 20:51:22 +08:00 committed by Ilya Dryomov
parent 9a5530c638
commit fce8515741
1 changed files with 1 additions and 1 deletions
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2
fs/ceph/snap.c
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@ -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) {