On Sun, May 28, 2023 at 08:36:43PM +0100, Matthew Wilcox wrote: > On Sun, May 28, 2023 at 09:01:37PM +0800, Muchun Song wrote: > > with *init_net*. If Vasily does not want to bring commit 1d0403d20f6c back, > > this patch LGTM. Otherwise, let's wait for Vasily. > > If we're not going to bring back 1d0403d20f6c then we should > simply revert fc4db90fe71e instead of applying this patch. Initially I was thinking of adding virt_addr_valid() check in the mem_cgroup_from_obj() but it seems like that check is not cheap on arm64. I don't have any quick solutions other than adding a check against init_net in __register_pernet_operations(). I will wait for couple of days for Vasily otherwise I will retry 1d0403d20f6c with the init_net check in __register_pernet_operations().
