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

Greg KH
2022-10-27T10:09:40Z

On Wed, Oct 26, 2022 at 11:48:01AM -0700, Shakeel Butt wrote:
> On Wed, Oct 26, 2022 at 11:44 AM Michele Jr De Candia
> <mdecandia@gmail.com> 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?

Also is this issue on 5.10.y and 5.15.y?

thanks,

greg k-h