linux-kernel - RE: [????] Re: [????] Re: [PATCH][v3] hung_task: Panic after fixed number of hung tasks

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Message-ID: <b7937a55047b44c687e11e219a62009e@baidu.com>
Date: Wed, 15 Oct 2025 02:04:21 +0000
From: "Li,Rongqing" <lirongqing@...du.com>
To: Petr Mladek <pmladek@...e.com>
CC: Lance Yang <lance.yang@...ux.dev>, "wireguard@...ts.zx2c4.com"
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Subject: RE: [????] Re: [????] Re: [PATCH][v3] hung_task: Panic after fixed
 number of hung tasks

> I would also update the subject to something like:
> 
>     hung_task: Panic when there are more than N hung tasks at the same
> time
> 

Ok, I will update 

> 
> 
> That said, I think that both approaches make sense.
> 
> Your approach would trigger the panic when many processes are stuck.
> Note that it still might be a transient state. But I agree that the more stuck
> processes exist the more serious the problem likely is for the heath of the
> system.
> 
> My approach would trigger panic when a single process hangs for a long
> time. It will trigger more likely only when the problem is persistent. The
> seriousness depends on which particular process get stuck.
> 
Yes, both are reasonable requirement, and I will leave it to you or anyone else interested to implement it

Thanks

-Li.


> I am fine with your approach. Just please, make more clear that the number
> means the number of hung tasks at the same time.
> And mention the problems to login, ...
> 
> Best Regards,
> Petr