From: Dave Chinner <david@fromorbit.com>
To: Glauber Costa <glommer@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: linux-next: slab shrinkers: BUG at mm/list_lru.c:92
Date: Tue, 25 Jun 2013 12:29:21 +1000 [thread overview]
Message-ID: <20130625022921.GQ29376@dastard> (raw)
In-Reply-To: <20130623115127.GA7986@localhost.localdomain>
On Sun, Jun 23, 2013 at 03:51:29PM +0400, Glauber Costa wrote:
> On Fri, Jun 21, 2013 at 11:00:21AM +0200, Michal Hocko wrote:
> > On Thu 20-06-13 17:12:01, Michal Hocko wrote:
> > > I am bisecting it again. It is quite tedious, though, because good case
> > > is hard to be sure about.
> >
> > OK, so now I converged to 2d4fc052 (inode: convert inode lru list to generic lru
> > list code.) in my tree and I have double checked it matches what is in
> > the linux-next. This doesn't help much to pin point the issue I am
> > afraid :/
> >
> Can you revert this patch (easiest way ATM is to rewind your tree to a point
> right before it) and apply the following patch?
>
> As Dave has mentioned, it is very likely that this bug was already there, we
> were just not ever checking imbalances. The attached patch would tell us at
> least if the imbalance was there before. If this is the case, I would suggest
> turning the BUG condition into a WARN_ON_ONCE since we would be officially
> not introducing any regression. It is no less of a bug, though, and we should
> keep looking for it.
We probably should do that BUG->WARN change anyway. BUG_ON is pretty
obnoxious in places where we can probably continue on without much
impact....
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2013-06-25 2:29 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-17 14:18 Michal Hocko
2013-06-17 15:14 ` Glauber Costa
2013-06-17 15:33 ` Michal Hocko
2013-06-17 16:54 ` Glauber Costa
2013-06-18 7:42 ` Michal Hocko
2013-06-17 21:35 ` Andrew Morton
2013-06-17 22:30 ` Glauber Costa
2013-06-18 2:46 ` Dave Chinner
2013-06-18 6:31 ` Glauber Costa
2013-06-18 8:24 ` Michal Hocko
2013-06-18 10:44 ` Michal Hocko
2013-06-18 13:50 ` Michal Hocko
2013-06-25 2:27 ` Dave Chinner
2013-06-26 8:15 ` Michal Hocko
2013-06-26 23:24 ` Dave Chinner
2013-06-27 14:54 ` Michal Hocko
2013-06-28 8:39 ` Michal Hocko
2013-06-28 14:31 ` Glauber Costa
2013-06-28 15:12 ` Michal Hocko
2013-06-29 2:55 ` Dave Chinner
2013-06-30 18:33 ` Michal Hocko
2013-07-01 1:25 ` Dave Chinner
2013-07-01 7:50 ` Michal Hocko
2013-07-01 8:10 ` Dave Chinner
2013-07-02 9:22 ` Michal Hocko
2013-07-02 12:19 ` Dave Chinner
2013-07-02 12:44 ` Michal Hocko
2013-07-03 11:24 ` Dave Chinner
2013-07-03 14:08 ` Glauber Costa
2013-07-04 16:36 ` Michal Hocko
2013-07-08 12:53 ` Michal Hocko
2013-07-08 21:04 ` Andrew Morton
2013-07-09 17:34 ` Glauber Costa
2013-07-09 17:51 ` Andrew Morton
2013-07-09 17:32 ` Glauber Costa
2013-07-09 17:50 ` Andrew Morton
2013-07-09 17:57 ` Glauber Costa
2013-07-09 17:57 ` Michal Hocko
2013-07-09 21:39 ` Andrew Morton
2013-07-10 2:31 ` Dave Chinner
2013-07-10 7:34 ` Michal Hocko
2013-07-10 8:06 ` Michal Hocko
2013-07-11 2:26 ` Dave Chinner
2013-07-11 3:03 ` Andrew Morton
2013-07-11 13:23 ` Michal Hocko
2013-07-12 1:42 ` Hugh Dickins
2013-07-13 3:29 ` Dave Chinner
2013-07-15 9:14 ` Michal Hocko
2013-06-18 6:26 ` Glauber Costa
2013-06-18 8:25 ` Michal Hocko
2013-06-19 7:13 ` Michal Hocko
2013-06-19 7:35 ` Glauber Costa
2013-06-19 8:52 ` Glauber Costa
2013-06-19 13:57 ` Michal Hocko
2013-06-19 14:02 ` Glauber Costa
2013-06-19 14:28 ` Michal Hocko
2013-06-20 14:11 ` Glauber Costa
2013-06-20 15:12 ` Michal Hocko
2013-06-20 15:16 ` Michal Hocko
2013-06-21 9:00 ` Michal Hocko
2013-06-23 11:51 ` Glauber Costa
2013-06-23 11:55 ` Glauber Costa
2013-06-25 2:29 ` Dave Chinner [this message]
2013-06-26 8:22 ` Michal Hocko
2013-06-18 8:19 ` Michal Hocko
2013-06-18 8:21 ` Glauber Costa
2013-06-18 8:26 ` Michal Hocko
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