linux-kernel - Re: bio linked list corruption.

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Message-ID: <CAOMGZ=H6gAnMHkbLjHmSiCmcqvL7gK=_x0Aj-roErpdB5h8xxQ@mail.gmail.com>
Date:   Mon, 5 Dec 2016 22:33:14 +0100
From:   Vegard Nossum <vegard.nossum@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Dave Jones <davej@...emonkey.org.uk>, Chris Mason <clm@...com>,
        Jens Axboe <axboe@...com>,
        Andy Lutomirski <luto@...capital.net>,
        Andy Lutomirski <luto@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>, Josef Bacik <jbacik@...com>,
        David Sterba <dsterba@...e.com>,
        linux-btrfs <linux-btrfs@...r.kernel.org>,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        Dave Chinner <david@...morbit.com>
Subject: Re: bio linked list corruption.

On 5 December 2016 at 21:35, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> Note for Ingo and Peter: this patch has not been tested at all. But
> Vegard did test an earlier patch of mine that just verified that yes,
> the issue really was that wait queue entries remained on the wait
> queue head just as we were about to return and free it.

The second patch has been running for 1h+ without any problems of any
kind. I should typically have seen 2 crashes by now. I'll let it run
overnight to be sure.


Vegard