linux-kernel - Re: [4.1-rc7] btrfs related VM_BUG

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <55787743.4070308@fb.com>
Date:	Wed, 10 Jun 2015 13:43:31 -0400
From:	Chris Mason <clm@...com>
To:	Dave Jones <davej@...emonkey.org.uk>, <jbacik@...com>,
	<dsterba@...e.cz>, Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [4.1-rc7] btrfs related VM_BUG_ON in filemap.c

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?

-chris

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/