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

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Date:   Fri, 28 Jun 2019 19:10:00 -0700
From:   syzbot <syzbot+0b224895cb9454584de1@...kaller.appspotmail.com>
To:     ast@...nel.org, bp@...en8.de, bpf@...r.kernel.org,
        daniel@...earbox.net, dvyukov@...gle.com, hpa@...or.com,
        jacob.jun.pan@...ux.intel.com, john.fastabend@...il.com,
        konrad.wilk@...cle.com, len.brown@...el.com,
        linux-kernel@...r.kernel.org, mingo@...hat.com,
        netdev@...r.kernel.org, puwen@...on.cn, rppt@...ux.vnet.ibm.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: Re: BUG: unable to handle kernel paging request in __do_softirq

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=16aac819a00000
start commit:   29f785ff Merge branch 'fixes' of git://git.kernel.org/pub/..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=15aac819a00000
console output: https://syzkaller.appspot.com/x/log.txt?x=11aac819a00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e5c77f8090a3b96b
dashboard link: https://syzkaller.appspot.com/bug?extid=0b224895cb9454584de1
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1076d132a00000

Reported-by: syzbot+0b224895cb9454584de1@...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