linux-kernel - Re: [syzbot] possible deadlock in __sock

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Message-ID: <000000000000842d2f05c8cd2ac7@google.com>
Date:   Thu, 05 Aug 2021 03:13:10 -0700
From:   syzbot <syzbot+8e467b009209f1fcf666@...kaller.appspotmail.com>
To:     andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org,
        daniel@...earbox.net, dave@...mo.net, davem@...emloft.net,
        dsahern@...nel.org, john.fastabend@...il.com, kafai@...com,
        kpsingh@...nel.org, kuba@...nel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, pabeni@...hat.com, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, yhs@...com,
        yoshfuji@...ux-ipv6.org
Subject: Re: [syzbot] possible deadlock in __sock_release

syzbot suspects this issue was fixed by commit:

commit 8fb4792f091e608a0a1d353dfdf07ef55a719db5
Author: Paolo Abeni <pabeni@...hat.com>
Date:   Tue Jul 20 13:08:40 2021 +0000

    ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=113a99f1300000
start commit:   c6c205ed442e Merge branch 'stmmac-ptp'
git tree:       net
kernel config:  https://syzkaller.appspot.com/x/.config?x=26b64b13fcecb7e1
dashboard link: https://syzkaller.appspot.com/bug?extid=8e467b009209f1fcf666
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=152188d2300000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10d5493c300000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions

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