linux-kernel - Re: WARNING in __device_add

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Message-ID: <000000000000c5f3d905983d2ae0@google.com>
Date:   Tue, 26 Nov 2019 02:16:01 -0800
From:   syzbot <syzbot+3337db851ace689ceb50@...kaller.appspotmail.com>
To:     akinobu.mita@...il.com, akpm@...ux-foundation.org, axboe@...nel.dk,
        dvyukov@...gle.com, gregkh@...uxfoundation.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        mhocko@...nel.org, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org
Subject: Re: WARNING in __device_add_disk

syzbot has bisected this bug to:

commit e41d58185f1444368873d4d7422f7664a68be61d
Author: Dmitry Vyukov <dvyukov@...gle.com>
Date:   Wed Jul 12 21:34:35 2017 +0000

     fault-inject: support systematic fault injection

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17889f5ae00000
start commit:   6da6c0db Linux v4.17-rc3
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=14489f5ae00000
console output: https://syzkaller.appspot.com/x/log.txt?x=10489f5ae00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5a1dc06635c10d27
dashboard link: https://syzkaller.appspot.com/bug?extid=3337db851ace689ceb50
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15191837800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=120af5c7800000

Reported-by: syzbot+3337db851ace689ceb50@...kaller.appspotmail.com
Fixes: e41d58185f14 ("fault-inject: support systematic fault injection")

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