Re: kern/42205: kernel panic at activated userquota

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

The following reply was made to PR kern/42205; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
netbsd-bugs%NetBSD.org@localhost
Subject: Re: kern/42205: kernel panic  at activated userquota
Date: Tue, 20 Oct 2009 22:12:45 +0200

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 On Tue, Oct 20, 2009 at 09:39:02PM +0200, Manuel Bouyer wrote:
 > The attached patch may help, but it's untested and probably not the
 > right way of fixing this.
 
 Ops, I did it again.
 The patch is really attached this time
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --
 
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 Index: ufs_quota.c
 ===================================================================
 RCS file: /cvsroot/src/sys/ufs/ufs/ufs_quota.c,v
 retrieving revision 1.60.10.3
 diff -u -p -u -r1.60.10.3 ufs_quota.c
 --- ufs_quota.c        7 Aug 2009 05:59:44 -0000       1.60.10.3
 +++ ufs_quota.c        20 Oct 2009 19:38:13 -0000
 @@ -743,6 +743,13 @@ qsync(struct mount *mp)
                        }
                        continue;
                }
 +              if (VTOI(vp) == NULL) {
 +                      mutex_enter(&mntvnode_lock);
 +                      vunmark(mvp);
 +                      vlockmgr(vp->v_vnlock, LK_RELEASE);
 +                      vrele(vp);
 +                      goto again;
 +              }
                for (i = 0; i < MAXQUOTAS; i++) {
                        dq = VTOI(vp)->i_dquot[i];
                        if (dq == NODQUOT)
 
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