linux-kernel - Re: INFO: trying to register non-static key in tun_chr_write

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Date:   Fri, 28 Sep 2018 10:06:26 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     syzbot <syzbot+e662df0ac1d753b57e80@...kaller.appspotmail.com>,
        brouer@...hat.com, davem@...emloft.net, edumazet@...gle.com,
        jasowang@...hat.com, linux-kernel@...r.kernel.org, mst@...hat.com,
        netdev@...r.kernel.org, sd@...asysnail.net,
        syzkaller-bugs@...glegroups.com
Subject: Re: INFO: trying to register non-static key in tun_chr_write_iter



On 09/28/2018 08:05 AM, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    100811936f89 bpf: test_bpf: add init_net to dev for flow_d..
> git tree:       bpf-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=145378e6400000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=443816db871edd66
> dashboard link: https://syzkaller.appspot.com/bug?extid=e662df0ac1d753b57e80
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> 
> Unfortunately, I don't have any reproducer for this crash yet.
>


I took a look at this report, I will send a patch series fixing the issues
I found in tun driver.