From: Christoph Hellwig <hch@infradead.org>
To: Lachlan McIlroy <lachlan@sgi.com>
Cc: xfs-dev <xfs-dev@sgi.com>, xfs-oss <xfs@oss.sgi.com>
Subject: Re: [PATCH] Fix use-after-free with log and quotas
Date: Fri, 12 Sep 2008 04:43:40 -0400 [thread overview]
Message-ID: <20080912084340.GA11098@infradead.org> (raw)
In-Reply-To: <48CA2B23.4020405@sgi.com>
On Fri, Sep 12, 2008 at 06:41:07PM +1000, Lachlan McIlroy wrote:
> Destroying the quota stuff on unmount can access the log - ie XFS_QM_DONE()
> ends up in xfs_dqunlock() which calls xfs_trans_unlocked_item() and then
> xfs_log_move_tail(). By this time the log has already been destroyed.
> Just move the cleanup of the quota code earlier in xfs_unmountfs() before
> the call to xfs_log_unmount(). Moving XFS_QM_DONE() up near
> XFS_QM_DQPURGEALL() seems like a good spot.
Yeah, I have something like this in my large mount/unmount audit.
Looks good, and I have to rebase all the other changes anyway.
next prev parent reply other threads:[~2008-09-12 8:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-12 8:41 [PATCH] Fix use-after-free with log and quotas Lachlan McIlroy
2008-09-12 8:43 ` Christoph Hellwig [this message]
2008-09-13 4:02 ` Dave Chinner
2008-09-15 2:40 ` Lachlan McIlroy
2008-09-16 4:08 ` Dave Chinner
2008-09-16 6:36 ` Lachlan McIlroy
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