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Date:   Mon, 16 Mar 2020 00:49:02 -0700
From:   syzbot <syzbot+1b4ebf4dae4e510dd219@...kaller.appspotmail.com>
To:     davem@...emloft.net, kuba@...nel.org, kuznet@....inr.ac.ru,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        petrm@...lanox.com, syzkaller-bugs@...glegroups.com,
        yoshfuji@...ux-ipv6.org
Subject: Re: general protection fault in erspan_netlink_parms

syzbot has bisected this bug to:

commit e1f8f78ffe9854308b9e12a73ebe4e909074fc33
Author: Petr Machata <petrm@...lanox.com>
Date:   Fri Mar 13 11:39:36 2020 +0000

    net: ip_gre: Separate ERSPAN newlink / changelink callbacks

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=101477fde00000
start commit:   0fda7600 geneve: move debug check after netdev unregister
git tree:       net
final crash:    https://syzkaller.appspot.com/x/report.txt?x=121477fde00000
console output: https://syzkaller.appspot.com/x/log.txt?x=141477fde00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c2e311dba9a02ba9
dashboard link: https://syzkaller.appspot.com/bug?extid=1b4ebf4dae4e510dd219
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1627f955e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=111ac52de00000

Reported-by: syzbot+1b4ebf4dae4e510dd219@...kaller.appspotmail.com
Fixes: e1f8f78ffe98 ("net: ip_gre: Separate ERSPAN newlink / changelink callbacks")

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

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