On 01/14/23 16:08, Sergey Senozhatsky wrote: > On (23/01/13 11:57), Mike Kravetz wrote: > > Hi Sergey, > > > > The following BUG shows up after this series in linux-next. I can easily > > recreate by doing the following: > > > > # echo large_value > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages > > where 'large_value' is a so big that there could never possibly be that > > many 2MB huge pages in the system. > > I get migration warnins with the zsmalloc series reverted. > I guess the problem is somewhere else. Can you double check > on you side? I did the following: - Start with clean v6.2-rc3 Perform echo, did not see issue - Applied your 5 patches (includes the zsmalloc: turn chain size config option into UL constant patch). Took default value for ZSMALLOC_CHAIN_SIZE of 8. Performed echo, recreated issue. - Changed ZSMALLOC_CHAIN_SIZE to 1. Perform echo, did not see issue I have not looked into the details of your patches or elsewhere. Just thought it might be related to your series because of the above. And, since your series was fresh in your mind this may trigger some thought/explanation. It is certainly possible that root cause could be elsewhere and your series is just exposing that. I can take a closer look on Monday. Thanks, -- Mike Kravetz
