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Date:      Mon, 10 May 2010 16:10:57 +1000
From:      Peter Jeremy <peterjeremy@acm.org>
To:        current@freebsd.org
Subject:   Re: LOR: ufs vs bufwait
Message-ID:  <20100510061057.GA93038@server.vk2pj.dyndns.org>
In-Reply-To: <20100508102005.GB1867@elmar.spoerlein.net>
References:  <20100508102005.GB1867@elmar.spoerlein.net>

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On 2010-May-08 12:20:05 +0200, Ulrich Sp=F6rlein <uqs@spoerlein.net> wrote:
>This LOR also is not yet listed on the LOR page, so I guess it's rather
>new. I do use SUJ.
>
>lock order reversal:
> 1st 0xc48388d8 ufs (ufs) @ /usr/src/sys/kern/vfs_lookup.c:502
> 2nd 0xec0fe304 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_softdep.c:113=
63
> 3rd 0xc49e56b8 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2091

I'm seeing exactly the same LOR (and subsequent deadlock) on a recent
-current without SUJ.

--=20
Peter Jeremy

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