On Thu, Oct 27, 2022 at 12:09:30PM +0200, Greg KH wrote: > 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@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? > > Also is this issue on 5.10.y and 5.15.y? > > thanks, > > greg k-h Following up this email thread for those of us who were watching it; it looks like this was only an issue on 5.4.y due to some missing backports that this change depended on - see this thread for details: https://lore.kernel.org/lkml/Y38h9oe4ZEGNd7Zx@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/ Cheers, Sam