Author: kib
Date: Thu Sep 8 12:06:43 2016
New Revision: 305595
URL: https://svnweb.freebsd.org/changeset/base/305595
Log:
In dqsync(), when called from quotactl(), um_quotas entry might appear
cleared since nothing prevents completion of the parallel quotaoff.
There is nothing to sync in this case, and no reason to panic.
Reported and tested by: pho
Reviewed by: mckusick
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Modified:
head/sys/ufs/ufs/ufs_quota.c
Modified: head/sys/ufs/ufs/ufs_quota.c
==============================================================================
--- head/sys/ufs/ufs/ufs_quota.c Thu Sep 8 12:05:13 2016
(r305594)
+++ head/sys/ufs/ufs/ufs_quota.c Thu Sep 8 12:06:43 2016
(r305595)
@@ -1538,8 +1538,13 @@ dqsync(struct vnode *vp, struct dquot *d
if ((ump = dq->dq_ump) == NULL)
return (0);
UFS_LOCK(ump);
- if ((dqvp = ump->um_quotas[dq->dq_type]) == NULLVP)
- panic("dqsync: file");
+ if ((dqvp = ump->um_quotas[dq->dq_type]) == NULLVP) {
+ if (vp == NULL) {
+ UFS_UNLOCK(ump);
+ return (0);
+ } else
+ panic("dqsync: file");
+ }
vref(dqvp);
UFS_UNLOCK(ump);
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