syzbot has bisected this bug to:
commit bfcccfe78b361f5f6ef48554aed5bcd30c72f67f
Author: Jakub Kicinski <jakub.kicinski@xxxxxxxxxxxxx>
Date: Tue Nov 5 21:26:11 2019 +0000
netdevsim: drop code duplicated by a merge
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=166d11c3e00000
start commit: 425c075d Merge branch 'tun-debug'
git tree: net-next
final crash: https://syzkaller.appspot.com/x/report.txt?x=156d11c3e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=116d11c3e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=598678fc6e800071
dashboard link: https://syzkaller.appspot.com/bug?extid=3fbea977bd382a4e6140
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e3df31e00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=163d0439e00000
Reported-by: syzbot+3fbea977bd382a4e6140@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: bfcccfe78b36 ("netdevsim: drop code duplicated by a merge")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
