Re: INFO: task hung in genl_rcv_msg

syzbot has bisected this bug to:

commit 928df1880e24bcd47d6359ff86df24db3dfba3c3
Author: Jon Maloy [off-list ref]
Date:   Thu Mar 15 15:48:51 2018 +0000

     tipc: obsolete TIPC_ZONE_SCOPE

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1487ea0f200000
start commit:   a5ed1e96 Merge tag 'powerpc-5.1-3' of git://git.kernel.org..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1687ea0f200000
console output: https://syzkaller.appspot.com/x/log.txt?x=1287ea0f200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9a31fb246de2a622
dashboard link: https://syzkaller.appspot.com/bug?extid=c3b90a95b2d6bd4f29b1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=176657ef200000

Reported-by: syzbot+c3b90a95b2d6bd4f29b1@syzkaller.appspotmail.com
Fixes: 928df1880e24 ("tipc: obsolete TIPC_ZONE_SCOPE")

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