linux-kernel - Re: 5.8-rc*: kernel BUG at kernel/signal.c:1917

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Message-ID: <2c8ef23c-43b4-39d4-8e84-92769c948da9@kernel.org>
Date:   Sat, 18 Jul 2020 14:28:46 +0200
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Oleg Nesterov <oleg@...hat.com>
Cc:     christian@...uner.io, "Eric W. Biederman" <ebiederm@...ssion.com>,
        Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: 5.8-rc*: kernel BUG at kernel/signal.c:1917

On 17. 07. 20, 14:40, Oleg Nesterov wrote:
> On 07/17, Oleg Nesterov wrote:
>>
>> On 07/17, Jiri Slaby wrote:
>>>
>>> On 17. 07. 20, 12:45, Jiri Slaby wrote:
>>>> Hi,
>>>>
>>>> the strace testsuite triggers this on 5.8-rc4 and -rc5 both on x86_64
>>>> and i586:
>>>
>>> make check needs -jsomething, running is sequentially (-j1) doesn't
>>> trigger it. After the error, I cannot run anything. Like ps to find out
>>> what test caused the crash...
>>
>> Strange... I'll try to reproduce but I can't do this till Monday.
>>
>> Meanwhile, could you try the patch below? It needs CONFIG_DEBUG_ATOMIC_SLEEP.
> 
> please see the updated patch below, lets check ptrace_unfreeze() too.

Sure, dmesg attached.

thanks,
-- 
js

View attachment "dmesg.txt" of type "text/plain" (118101 bytes)