linux-kernel - Re: kernel panic: corrupted stack end in dput

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Message-ID: <000000000000357fba058c9d906d@google.com>
Date:   Mon, 01 Jul 2019 05:14:00 -0700
From:   syzbot <syzbot+d88a977731a9888db7ba@...kaller.appspotmail.com>
To:     ast@...nel.org, daniel@...earbox.net, john.fastabend@...il.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk
Subject: Re: kernel panic: corrupted stack end in dput

syzbot has bisected this bug to:

commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650
Author: John Fastabend <john.fastabend@...il.com>
Date:   Sat Jun 30 13:17:47 2018 +0000

     bpf: sockhash fix omitted bucket lock in sock_close

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17f7f4d5a00000
start commit:   7b75e49d net: dsa: mv88e6xxx: wait after reset deactivation
git tree:       net
final crash:    https://syzkaller.appspot.com/x/report.txt?x=140ff4d5a00000
console output: https://syzkaller.appspot.com/x/log.txt?x=100ff4d5a00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e7c31a94f66cc0aa
dashboard link: https://syzkaller.appspot.com/bug?extid=d88a977731a9888db7ba
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=130f49bda00000

Reported-by: syzbot+d88a977731a9888db7ba@...kaller.appspotmail.com
Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close")

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