linux-kernel - Re: [syzbot] [tipc?] kernel BUG in __pskb_pull

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Message-ID: <675c1dc6.050a0220.17d782.000c.GAE@google.com>
Date: Fri, 13 Dec 2024 03:43:02 -0800
From: syzbot <syzbot+4f66250f6663c0c1d67e@...kaller.appspotmail.com>
To: alsa-devel@...a-project.org, asml.silence@...il.com, axboe@...nel.dk, 
	clm@...com, davem@...emloft.net, dennis.dalessandro@...nelisnetworks.com, 
	dsterba@...e.com, edumazet@...gle.com, eric.dumazet@...il.com, 
	horms@...nel.org, io-uring@...r.kernel.org, jasowang@...hat.com, 
	jdamato@...tly.com, jgg@...pe.ca, jmaloy@...hat.com, josef@...icpanda.com, 
	kuba@...nel.org, kvm@...r.kernel.org, leon@...nel.org, 
	linux-block@...r.kernel.org, linux-btrfs@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-rdma@...r.kernel.org, miklos@...redi.hu, mst@...hat.com, 
	netdev@...r.kernel.org, pabeni@...hat.com, pbonzini@...hat.com, 
	perex@...ex.cz, stable@...r.kernel.org, stefanha@...hat.com, 
	syzkaller-bugs@...glegroups.com, tipc-discussion@...ts.sourceforge.net, 
	tiwai@...e.com, viro@...iv.linux.org.uk, 
	virtualization@...ts.linux-foundation.org, ying.xue@...driver.com
Subject: Re: [syzbot] [tipc?] kernel BUG in __pskb_pull_tail

syzbot has bisected this issue to:

commit de4f5fed3f231a8ff4790bf52975f847b95b85ea
Author: Jens Axboe <axboe@...nel.dk>
Date:   Wed Mar 29 14:52:15 2023 +0000

    iov_iter: add iter_iovec() helper

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17424730580000
start commit:   96b6fcc0ee41 Merge branch 'net-dsa-cleanup-eee-part-1'
git tree:       net-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=14c24730580000
console output: https://syzkaller.appspot.com/x/log.txt?x=10c24730580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1362a5aee630ff34
dashboard link: https://syzkaller.appspot.com/bug?extid=4f66250f6663c0c1d67e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=166944f8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1287ecdf980000

Reported-by: syzbot+4f66250f6663c0c1d67e@...kaller.appspotmail.com
Fixes: de4f5fed3f23 ("iov_iter: add iter_iovec() helper")

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