Re: INFO: task hung in nbd_ioctl (3)

[syzbot]

syzbot has bisected this issue to:

commit e9e006f5fcf2bab59149cb38a48a4817c1b538b4
Author: Mike Christie <mchristi@xxxxxxxxxx>
Date:   Sun Aug 4 19:10:06 2019 +0000

    nbd: fix max number of supported devs

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=171556f0500000
start commit:   fb0155a0 Merge tag 'nfs-for-5.9-3' of git://git.linux-nfs...
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=149556f0500000
console output: https://syzkaller.appspot.com/x/log.txt?x=109556f0500000
kernel config:  https://syzkaller.appspot.com/x/.config?x=41b736b7ce1b3ea4
dashboard link: https://syzkaller.appspot.com/bug?extid=fe03c50d25c0188f7487
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=173d9b17900000

Reported-by: syzbot+fe03c50d25c0188f7487@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e9e006f5fcf2 ("nbd: fix max number of supported devs")

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