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

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Date:   Tue, 13 Jun 2023 17:43:30 -0700
From:   syzbot <syzbot+dd1339599f1840e4cc65@...kaller.appspotmail.com>
To:     bpf@...r.kernel.org, davem@...emloft.net, dhowells@...hat.com,
        edumazet@...gle.com, kuba@...nel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, pabeni@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [net?] WARNING in unreserve_psock

syzbot has bisected this issue to:

commit c31a25e1db486f36a0ffe3c849b0a82cda3db7db
Author: David Howells <dhowells@...hat.com>
Date:   Fri Jun 9 10:02:21 2023 +0000

    kcm: Send multiple frags in one sendmsg()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13050c75280000
start commit:   c29e012eae29 selftests: forwarding: Fix layer 2 miss test ..
git tree:       net-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=10850c75280000
console output: https://syzkaller.appspot.com/x/log.txt?x=17050c75280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=526f919910d4a671
dashboard link: https://syzkaller.appspot.com/bug?extid=dd1339599f1840e4cc65
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=170f2663280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12f1c5e7280000

Reported-by: syzbot+dd1339599f1840e4cc65@...kaller.appspotmail.com
Fixes: c31a25e1db48 ("kcm: Send multiple frags in one sendmsg()")

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