linux-kernel - Re: [linus:master] [RDMA/iwcm] aee2424246: WARNING:at_kernel/workqueue.c:#check_flush

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Message-ID: <d61bcb00-301c-400e-9738-b4ec5463f1b9@linux.dev>
Date: Tue, 20 Aug 2024 14:50:05 +0800
From: Zhu Yanjun <yanjun.zhu@...ux.dev>
To: Oliver Sang <oliver.sang@...el.com>
Cc: Bart Van Assche <bvanassche@....org>, oe-lkp@...ts.linux.dev,
 lkp@...el.com, linux-kernel@...r.kernel.org,
 Leon Romanovsky <leon@...nel.org>,
 Shin'ichiro Kawasaki <shinichiro.kawasaki@....com>,
 linux-rdma@...r.kernel.org
Subject: Re: [linus:master] [RDMA/iwcm] aee2424246:
 WARNING:at_kernel/workqueue.c:#check_flush_dependency


在 2024/8/20 9:42, Oliver Sang 写道:
> hi, Zhu Yanjun,
>
> On Sun, Aug 18, 2024 at 02:24:52PM +0800, Oliver Sang wrote:
>> hi, Yanjun.Zhu,
>>
>> On Sat, Aug 17, 2024 at 04:46:23PM +0800, Zhu Yanjun wrote:
>>> 在 2024/8/17 1:10, Bart Van Assche 写道:
>>>> On 8/16/24 5:49 AM, Zhu Yanjun wrote:
>>>>> Hi, kernel test robot
>>>>>
>>>>> Please help to make tests with the following commits.
>>>>>
>>>>> Please let us know the result.
>>>> I don't think that the kernel test robot understands the above request.
>>> Got it. I do not know how to let test robot make tests with this patch.^_^
>> we can test the patch for you. just cannot test quickly due to resource
>> constraint. will let you know the results in one or two days. thanks
> the WARNING is random in our tests. for aee2424246, it shows up 6 times in 20
> runs as below table.
>
> the "e0cc1e2cd74a66b5252ea674a26" is just your fix patch.
>
> we run it to 100 times, and the issue doesn't show.
>
> Tested-by: kernel test robot <oliver.sang@...el.com>

Thanks a lot for your tests. I will send out the latest patch very soon.

Zhu Yanjun

>
> a1babdb5b615751e aee2424246f9f1dadc33faa7899 e0cc1e2cd74a66b5252ea674a26
> ---------------- --------------------------- ---------------------------
>         fail:runs  %reproduction    fail:runs  %reproduction    fail:runs
>             |             |             |             |             |
>             :20          30%           6:20           0%            :100   dmesg.RIP:check_flush_dependency
>             :20          30%           6:20           0%            :100   dmesg.WARNING:at_kernel/workqueue.c:#check_flush_dependency
>
>
>>> Follow your advice, I have sent out a patch to rdma maillist. Please review.
>>>
>>> Best Regards,
>>>
>>> Zhu Yanjun
>>>
>>>> Thanks,
>>>>
>>>> Bart.
>>> -- 
>>> Best Regards,
>>> Yanjun.Zhu
>>>
-- 
Best Regards,
Yanjun.Zhu