linux-kernel - Re: WARNING in __blk_mq_delay_run_hw

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Message-ID: <0000000000001c9bac0594264f96@google.com>
Date:   Sat, 05 Oct 2019 02:19:00 -0700
From:   syzbot <syzbot+d44e1b26ce5c3e77458d@...kaller.appspotmail.com>
To:     axboe@...nel.dk, bvanassche@....org, hare@...e.com,
        keith.busch@...el.com, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: WARNING in __blk_mq_delay_run_hw_queue

syzbot has bisected this bug to:

commit ed76e329d74a4b15ac0f5fd3adbd52ec0178a134
Author: Jens Axboe <axboe@...nel.dk>
Date:   Mon Oct 29 19:06:14 2018 +0000

     blk-mq: abstract out queue map

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1558f6fb600000
start commit:   b145b0eb Merge tag 'for-linus' of git://git.kernel.org/pub..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1758f6fb600000
console output: https://syzkaller.appspot.com/x/log.txt?x=1358f6fb600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1ec3be9936e004f6
dashboard link: https://syzkaller.appspot.com/bug?extid=d44e1b26ce5c3e77458d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=165fcefb600000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=162d03db600000

Reported-by: syzbot+d44e1b26ce5c3e77458d@...kaller.appspotmail.com
Fixes: ed76e329d74a ("blk-mq: abstract out queue map")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection