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Subject: Re: general protection fault in __queue_work (2)
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syzbot has bisected this bug to:

commit 29dab2122492f6dbc0b895ca5bd047e166684d1a
Author: Dan Schatzberg <schatzberg.dan@gmail.com>
Date:   Tue Feb 25 04:14:07 2020 +0000

    loop: use worker per cgroup instead of kworker

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14d6b01de00000
start commit:   770fbb32 Add linux-next specific files for 20200228
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=16d6b01de00000
console output: https://syzkaller.appspot.com/x/log.txt?x=12d6b01de00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=576314276bce4ad5
dashboard link: https://syzkaller.appspot.com/bug?extid=889cc963ed79ee90f74f
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=176d7f29e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=134c481de00000

Reported-by: syzbot+889cc963ed79ee90f74f@syzkaller.appspotmail.com
Fixes: 29dab2122492 ("loop: use worker per cgroup instead of kworker")

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