linux-kernel - Re: [syzbot] [net?] WARNING in em_nbyte

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Message-ID: <69210f0f.a70a0220.d98e3.0050.GAE@google.com>
Date: Fri, 21 Nov 2025 17:17:03 -0800
From: syzbot <syzbot+f3a497f02c389d86ef16@...kaller.appspotmail.com>
To: davem@...emloft.net, edumazet@...gle.com, eric.dumazet@...il.com, 
	horms@...nel.org, jeremy@...zel.net, jhs@...atatu.com, jiri@...nulli.us, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
	pabeni@...hat.com, pablo@...filter.org, syzkaller-bugs@...glegroups.com, 
	tom@...bertland.com, xiyou.wangcong@...il.com
Subject: Re: [syzbot] [net?] WARNING in em_nbyte_match

syzbot has bisected this issue to:

commit 66e4c8d950083df8e12981babca788e1635c92b6
Author: Eric Dumazet <edumazet@...gle.com>
Date:   Tue May 10 03:57:39 2022 +0000

    net: warn if transport header was not set

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15b34c2a580000
start commit:   8e621c9a3375 Merge tag 'net-6.18-rc7' of git://git.kernel...
git tree:       net
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17b34c2a580000
console output: https://syzkaller.appspot.com/x/log.txt?x=13b34c2a580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=14b6a9313e132a6b
dashboard link: https://syzkaller.appspot.com/bug?extid=f3a497f02c389d86ef16
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15e83658580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=149b4484580000

Reported-by: syzbot+f3a497f02c389d86ef16@...kaller.appspotmail.com
Fixes: 66e4c8d95008 ("net: warn if transport header was not set")

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