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

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Date:   Mon, 19 Aug 2019 15:34:32 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     syzbot <syzbot+4207c7f3a443366d8aa2@...kaller.appspotmail.com>
Cc:     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

On Wed, 26 Jun 2019 03:17:05 -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    904d88d7 qmi_wwan: Fix out-of-bounds read
> git tree:       net
> console output: https://syzkaller.appspot.com/x/log.txt?x=14a8b865a00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=137ec2016ea3870d
> dashboard link: https://syzkaller.appspot.com/bug?extid=4207c7f3a443366d8aa2
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15576c71a00000
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+4207c7f3a443366d8aa2@...kaller.appspotmail.com

That's one of the bugs John fixed:

#syz fix: bpf: sockmap/tls, close can race with map free