netdev - Re: kernel BUG at net/core/dev.c:NUM!

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Message-ID: <20210113114136.4b23f753@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Wed, 13 Jan 2021 11:41:36 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     syzbot <syzbot+2393580080a2da190f04@...kaller.appspotmail.com>
Cc:     andrii@...nel.org, andriin@...com, ast@...nel.org,
        bpf@...r.kernel.org, daniel@...earbox.net, davem@...emloft.net,
        edumazet@...gle.com, f.fainelli@...il.com, hawk@...nel.org,
        john.fastabend@...il.com, kafai@...com, kpsingh@...nel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        roopa@...ulusnetworks.com, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, yhs@...com
Subject: Re: kernel BUG at net/core/dev.c:NUM!

On Wed, 13 Jan 2021 02:27:27 -0800 syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    c49243e8 Merge branch 'net-fix-issues-around-register_netd..
> git tree:       net
> console output: https://syzkaller.appspot.com/x/log.txt?x=11da7ba8d00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=bacfc914704718d3
> dashboard link: https://syzkaller.appspot.com/bug?extid=2393580080a2da190f04
> compiler:       gcc (GCC) 10.1.0-syz 20200507
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13704c3f500000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=160cc357500000

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux.git sit-fix