From: Dave Jones <davej@codemonkey.org.uk>
To: Chris Mason <clm@fb.com>
Cc: jbacik@fb.com, dsterba@suse.cz,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [4.1-rc7] btrfs related VM_BUG_ON in filemap.c
Date: Wed, 10 Jun 2015 14:42:15 -0400 [thread overview]
Message-ID: <20150610184215.GA32359@codemonkey.org.uk> (raw)
In-Reply-To: <55787743.4070308@fb.com>
On Wed, Jun 10, 2015 at 01:43:31PM -0400, Chris Mason wrote:
> On 06/10/2015 09:40 AM, Dave Jones wrote:
> > Found this on serial console this morning. The machine had rebooted itself shortly
> > afterwards (surprising, given I don't have panic-on-oops or similar set).
> >
>
> We had one other report of this a few months ago. Josef and I read
> through all of this and decided it was impossible, so someone else must
> be holding on to that page and unlocking it.
>
> (that someone else could easily be btrfs, just not in this code path)
>
> so...what horrible things have you been up to?
Not sure exactly. I'll try and dig in some when I get home tonight.
I do seem to be able to reproduce it fairly easily at least.
(Twice this morning).
Dave
next prev parent reply other threads:[~2015-06-10 18:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-10 13:40 [4.1-rc7] btrfs related VM_BUG_ON in filemap.c Dave Jones
2015-06-10 17:43 ` Chris Mason
2015-06-10 18:42 ` Dave Jones [this message]
2015-06-16 17:14 ` David Sterba
2015-06-16 17:19 ` Chris Mason
2015-06-17 13:35 ` Dave Jones
2015-06-30 19:20 ` Dave Jones
2015-06-30 19:23 ` Josef Bacik
2015-06-30 19:28 ` Dave Jones
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