linux-kernel - Re: BUG: unable to handle kernel paging request in tls

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Date:   Wed, 26 Jun 2019 22:24:00 -0700
From:   syzbot <syzbot+4207c7f3a443366d8aa2@...kaller.appspotmail.com>
To:     ast@...nel.org, bpf@...r.kernel.org, daniel@...earbox.net,
        davem@...emloft.net, edumazet@...gle.com, john.fastabend@...il.com,
        kafai@...com, kuznet@....inr.ac.ru, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, yhs@...com,
        yoshfuji@...ux-ipv6.org
Subject: Re: BUG: unable to handle kernel paging request in tls_prots

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=148e8665a00000
start commit:   904d88d7 qmi_wwan: Fix out-of-bounds read
git tree:       net
final crash:    https://syzkaller.appspot.com/x/report.txt?x=168e8665a00000
console output: https://syzkaller.appspot.com/x/log.txt?x=128e8665a00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=137ec2016ea3870d
dashboard link: https://syzkaller.appspot.com/bug?extid=4207c7f3a443366d8aa2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15576c71a00000

Reported-by: syzbot+4207c7f3a443366d8aa2@...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