On Thu, Dec 29, 2022 at 5:47 PM Paulo Alcantara <pc@xxxxxx> wrote: > > Shyam Prasad N <nspmangalore@xxxxxxxxx> writes: > > > A customer reported this deadlock in a Kubernetes setup running on Ubuntu-18.04. > > This must be a 5.4 kernel, running this code: > > https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-azure/+git/bionic > > > > Based on the stack, it appears to be a hang in DFS reconnect codepath, > > trying to access the DFS cache lock in dfs_cache_update_vol. > > > > Can you tell if this is a known issue that has been fixed since? > > Looks like this has been fixed by > > 06d57378bcc9 ("cifs: Fix potential deadlock when updating vol in cifs_reconnect()") > Thanks for this. > > And if Ubuntu should backport any fix to 5.4? > > I would say so. It would probably also require others dfs related > patches to be backported in addition to the above. If you could point me to a list of other patches that could be backported to a 5.4 kernel, that would be great. > > > I could not find the function in the mainline codebase. > > Yes, it has changed alot. -- Regards, Shyam
