From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: "Theodore Ts'o" <tytso@mit.edu>,
"Johannes Stezenbach" <js@sig21.net>,
"Török Edwin" <edwin@etorok.net>,
linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org
Subject: Re: 4.7.0-rc7 ext4 error in dx_probe
Date: Sun, 7 Aug 2016 23:28:10 -0700 [thread overview]
Message-ID: <20160808062810.GC8590@birch.djwong.org> (raw)
In-Reply-To: <20160808035634.GA16193@thunk.org>
On Sun, Aug 07, 2016 at 11:56:34PM -0400, Theodore Ts'o wrote:
> On Fri, Aug 05, 2016 at 12:15:48PM -0700, Darrick J. Wong wrote:
> > > > [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/fs/ext4/inode.c?id=b47820edd1634dc1208f9212b7ecfb4230610a23
> > >
> > > I added the patch, rebuilt and rebooted. It will take some time
> > > before I'll report back since the issue is so hard to reproduce.
> >
> > FWIW I could trigger it reliably by running a bunch of directory traversal
> > programs simultaneously on the same directory. I have a script that fires
> > up multiple mutts pointing to the Maildirs for the high traffic Linux lists.
>
> Hmm, I wonder if we should request that this patch be backported to
> -stable. Darrick, what do you think?
Seems like an excellent idea.
I have one lingering concern -- is it a bug that two processes could be
computing the checksum of a buffer simultaneously? I would have thought ext4
would serialize that kind of buffer_head access...
--D
>
> - Ted
next prev parent reply other threads:[~2016-08-08 6:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-18 10:57 4.7.0-rc7 ext4 error in dx_probe Johannes Stezenbach
2016-07-18 13:38 ` Theodore Ts'o
2016-07-18 14:17 ` Johannes Stezenbach
2016-07-27 11:58 ` Johannes Stezenbach
[not found] ` <7849bcd2-142d-0a12-0a04-7d0c3b6d788f@etorok.net>
2016-08-05 10:35 ` Johannes Stezenbach
2016-08-05 17:02 ` Darrick J. Wong
2016-08-05 18:11 ` Johannes Stezenbach
2016-08-05 19:15 ` Darrick J. Wong
2016-08-08 3:56 ` Theodore Ts'o
2016-08-08 6:28 ` Darrick J. Wong [this message]
2016-08-08 16:08 ` Theodore Ts'o
2016-08-08 16:55 ` Darrick J. Wong
2016-08-08 21:13 ` Török Edwin
2016-08-09 2:37 ` Darrick J. Wong
2016-08-09 7:12 ` Török Edwin
2016-08-17 14:27 ` Török Edwin
2016-08-17 23:28 ` Darrick J. Wong
2016-08-22 7:33 ` Török Edwin
2016-09-01 16:40 ` Darrick J. Wong
2016-08-17 20:02 ` Johannes Stezenbach
2016-08-18 7:44 ` Török Edwin
2016-07-26 4:55 ` Christian Kujau
2016-07-28 0:00 ` Dave Chinner
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