netdev - Re: KASAN: use-after-free Read in tls_wait

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Message-ID: <20190808172041.282a755d@cakuba.netronome.com>
Date:   Thu, 8 Aug 2019 17:20:41 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     syzbot <syzbot+30c791a76814a3c6c9f9@...kaller.appspotmail.com>
Cc:     ast@...nel.org, aviadye@...lanox.com, borisp@...lanox.com,
        bpf@...r.kernel.org, daniel@...earbox.net, davejwatson@...com,
        davem@...emloft.net, john.fastabend@...il.com, kafai@...com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        songliubraving@...com, syzkaller-bugs@...glegroups.com, yhs@...com
Subject: Re: KASAN: use-after-free Read in tls_wait_data

On Thu, 08 Aug 2019 09:44:07 -0700, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    7b4980e0 Add linux-next specific files for 20190802
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=14a749b4600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=7e1348afd44b5e02
> dashboard link: https://syzkaller.appspot.com/bug?extid=30c791a76814a3c6c9f9
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> 
> Unfortunately, I don't have any reproducer for this crash yet.
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+30c791a76814a3c6c9f9@...kaller.appspotmail.com

Also old tree, pretty confidently I can say:

#syz fix: net/tls: partially revert fix transition through disconnect with close