On Sun, Dec 27, 2020 at 06:32:41PM +0200, Jussi Kivilinna wrote: > Hello, > > Now that 5.9 series is EOL, I tried to move to 5.10.3. I ran in to regression where LXC containers do not start with newer kernel. I found that issue had been reported (bisected + with reduced test case) in bugzilla at: https://bugzilla.kernel.org/show_bug.cgi?id=209971 > > Has this been fixed in 5.11-rc? Is there any patch that I could backport and test with 5.10? Have you tried Linus's tree to see if this works yet? If not, it should be a simple fix. See 7cfc630e63b4 ("proc "single files": switch to ->read_iter") as an example of what is needed here. I think we will see a lot of these "/proc files need to be fixed up" issues over time as this is something that we hit in the 5.10-rc sequence and fixed a bunch of them already... thanks, greg k-h
