linux-kernel - Re: bio linked list corruption.

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Message-ID: <CA+55aFyiJGk-A_cJH41Ec8Xj0Zz9M3EU-igJ9bgusj=nm28tFQ@mail.gmail.com>
Date:   Wed, 26 Oct 2016 15:58:43 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Dave Jones <davej@...emonkey.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Chris Mason <clm@...com>,
        Andy Lutomirski <luto@...capital.net>,
        Andy Lutomirski <luto@...nel.org>, Jens Axboe <axboe@...com>,
        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 Wed, Oct 26, 2016 at 3:51 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> Dave: it might be a good idea to split that "WARN_ON_ONCE()" in
> blk_mq_merge_queue_io() into two

I did that myself too, since Dave sees this during boot.

But I'm not getting the warning ;(

Dave gets it with ext4, and thats' what I have too, so I'm not sure
what the required trigger would be.

              Linus