syzbot has bisected this issue to:
commit ec97ecf1ebe485a17cd8395a5f35e6b80b57665a
Author: Mohit P. Tahiliani <tahiliani@xxxxxxxxxxx>
Date: Wed Jan 22 18:22:33 2020 +0000
net: sched: add Flow Queue PIE packet scheduler
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15c5748e680000
start commit: d4a7ce642100 igc: Fix Kernel Panic during ndo_tx_timeout c..
git tree: net
final oops: https://syzkaller.appspot.com/x/report.txt?x=17c5748e680000
console output: https://syzkaller.appspot.com/x/log.txt?x=13c5748e680000
kernel config: https://syzkaller.appspot.com/x/.config?x=77b9a3cf8f44c6da
dashboard link: https://syzkaller.appspot.com/bug?extid=eec403943a2a2455adaa
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1504b511a80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=137bf931a80000
Reported-by: syzbot+eec403943a2a2455adaa@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: ec97ecf1ebe4 ("net: sched: add Flow Queue PIE packet scheduler")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
