Re: [PATCH v3] mm: memory-failure: use rcu lock instead of tasklist_lock when collect_procs()

[Andrew Morton]

On Mon, 28 Aug 2023 10:25:27 +0800 Tong Tiangen <tongtiangen@xxxxxxxxxx> wrote:

> We found a softlock issue in our test, analyzed the logs, and found that
> the relevant CPU call trace as follows:
> 
> ...
> 
> By removing the use of tasklist_lock in task list iteration, we can break
> the softlock chain above.
> 

So I assume we'd like to backport this fix into -stable kernels?

If so, are we able to identify a suitble Fixes: target?