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From: syzbot <syzbot+8ed8fc4c57e9dcf23ca6@syzkaller.appspotmail.com>
To: davem@davemloft.net, edumazet@google.com, geliang.tang@suse.com,
	jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org,
	linux-kernel@vger.kernel.org, mathew.j.martineau@linux.intel.com,
	netdev@vger.kernel.org, pabeni@redhat.com,
	syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com
Subject: Re: [syzbot] UBSAN: shift-out-of-bounds in tcf_pedit_init
Date: Thu, 12 May 2022 18:13:07 -0700	[thread overview]
Message-ID: <00000000000091b7f505deda6057@google.com> (raw)
In-Reply-To: <0000000000005f1a8805ded719cc@google.com>

syzbot has bisected this issue to:

commit 8b796475fd7882663a870456466a4fb315cc1bd6
Author: Paolo Abeni <pabeni@redhat.com>
Date:   Tue May 10 14:57:34 2022 +0000

    net/sched: act_pedit: really ensure the skb is writable

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=158d3969f00000
start commit:   810c2f0a3f86 mlxsw: Avoid warning during ip6gre device rem..
git tree:       net
final oops:     https://syzkaller.appspot.com/x/report.txt?x=178d3969f00000
console output: https://syzkaller.appspot.com/x/log.txt?x=138d3969f00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=331feb185f8828e0
dashboard link: https://syzkaller.appspot.com/bug?extid=8ed8fc4c57e9dcf23ca6
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=104e9749f00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15f913b9f00000

Reported-by: syzbot+8ed8fc4c57e9dcf23ca6@syzkaller.appspotmail.com
Fixes: 8b796475fd78 ("net/sched: act_pedit: really ensure the skb is writable")

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

      parent reply	other threads:[~2022-05-13  1:13 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-12 21:18 [syzbot] UBSAN: shift-out-of-bounds in tcf_pedit_init syzbot
2022-05-12 21:19 ` Eric Dumazet
2022-05-12 22:51   ` Jakub Kicinski
2022-05-12 23:53     ` Eric Dumazet
2022-05-13  9:36       ` Paolo Abeni
2022-05-13  1:13 ` syzbot [this message]

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