netdev - Re: INFO: rcu detected stall in corrupted (4)

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Date:   Fri, 05 Mar 2021 14:27:55 -0800
From:   Vinicius Costa Gomes <vinicius.gomes@...el.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>,
        syzbot <syzbot+aa7d098bd6fa788fae8e@...kaller.appspotmail.com>
Cc:     David Miller <davem@...emloft.net>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Jiří Pírko <jiri@...nulli.us>,
        LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Cong Wang <xiyou.wangcong@...il.com>
Subject: Re: INFO: rcu detected stall in corrupted (4)

Dmitry Vyukov <dvyukov@...gle.com> writes:

> On Fri, Sep 4, 2020 at 8:49 PM syzbot
> <syzbot+aa7d098bd6fa788fae8e@...kaller.appspotmail.com> wrote:
>>
>> Hello,
>>
>> syzbot found the following issue on:
>>
>> HEAD commit:    0f091e43 netlabel: remove unused param from audit_log_form..
>> git tree:       net-next
>> console output: https://syzkaller.appspot.com/x/log.txt?x=14551a71900000
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=61025c6fd3261bb1
>> dashboard link: https://syzkaller.appspot.com/bug?extid=aa7d098bd6fa788fae8e
>> compiler:       gcc (GCC) 10.1.0-syz 20200507
>> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14eeda25900000
>> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=161472f5900000
>>
>> The issue was bisected to:
>>
>> commit 5a781ccbd19e4664babcbe4b4ead7aa2b9283d22
>> Author: Vinicius Costa Gomes <vinicius.gomes@...el.com>
>> Date:   Sat Sep 29 00:59:43 2018 +0000
>>
>>     tc: Add support for configuring the taprio scheduler
>
> This still happens. The bisection and repro look correct, the repro
> also sets up taprio scheduler;
> https://syzkaller.appspot.com/bug?id=7349616606afa3c986c377792f7ccbf9daae1142
>
> Vinicius, could you please take a look? Thanks

Ugh.

Sure. Taking a look.


Cheers,
-- 
Vinicius