Re: [PATCH 5.4 051/389] epoll: autoremove wakers even more aggressively

[Shakeel Butt]

On Wed, Oct 26, 2022 at 11:44 AM Michele Jr De Candia
<mdecandia@xxxxxxxxx> wrote:
>
> Hi Greg,
> sorry for the confusion.
>
> I'm running a container-based app on top of Ubuntu Linux 20.04 and linux kernel 5.4 always updated with latest patches.
>
> Updating from 5.4.210 to 5.4.211 we faced the hang up issue and searching for the cause we have tested that
> hangup occurs only with this patch
>
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.4.y&id=cf2db24ec4b8e9d399005ececd6f6336916ab6fc
>
> While understanding root cause, wt the moment we reverted it and hang up does not occurs (actually we are running 5.4.219 without that patch).
>
> Michele
>

Hi Michele, can you try the latest upstream kernel and see if the
issue repro ther? Also is it possible to provide a simplified repro of
the issue?

Shakeel