linux-kernel - Re: 2.6.20-rc1-mm1

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Date:	Tue, 19 Dec 2006 15:29:26 -0800 (PST)
From:	Luben Tuikov <ltuikov@...oo.com>
To:	Damien Wyart <damien.wyart@...e.fr>,
	Laurent Riffard <laurent.riffard@...e.fr>
Cc:	Kernel development list <linux-kernel@...r.kernel.org>,
	Luben Tuikov <ltuikov@...oo.com>,
	Andrew Morton <akpm@...l.org>, reiserfs-dev@...esys.com
Subject: Re: 2.6.20-rc1-mm1

--- Damien Wyart <damien.wyart@...e.fr> wrote:
> > > > The reiser4 failure is unexpected. Could you please see if you can
> > > > capture a trace, let the people at reiserfs-dev@...esys.com know?
> 
> > > Ok, I've handwritten the messages, here they are :
> 
> > > reiser4 panicked cowardly : reiser4[umount(2451)] : commit_current_atom 
> > > (fs/reiser4/txmngr.c:1087) (zam-597)
> > > write log failed (-5)
> 
> > > [ got 2 copies of them because I have 2 reiser4 fs)
> 
> > > I got them mainly when I try to reboot or halt the machine, and the
> > > process doesn't finish, the computer gets stuck after the reiser4
> > > messages. This is only with 2.6.20-mm1, not 2.6.19-rc6-mm2.
> 
> * Laurent Riffard <laurent.riffard@...e.fr> [2006-12-18 09:03]:
> > fix-sense-key-medium-error-processing-and-retry.patch seems to be the
> > culprit.
> 
> > Reverting it fix those reiser4 panics for me. Damien, could you confirm 
> > please ?
> 
> Yes, this fixes it too on my side. Thanks for this tracking !

I had a bug in my dev tree which got picked up by the patch
when I diffed against master:

-           scsi_end_request(cmd, 1, good_bytes, !!result) == NULL)
+           scsi_end_request(cmd, 1, good_bytes, result == 0) == NULL)
                return;

As james explained, the other chunk of the patch is still good.

    Luben

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