On Mon, Jul 17, 2023 at 08:04:54PM +0530, Ritesh Harjani wrote: > > These can basically trigger in extremely low memory space and only when > such ranges exist in the PA rbtree. Hence, I guess it is a little hard > to tigger race. Ritesh, thanks for looking into this! Naresh, how easy is it for you to trigger the BUG when using LTP? I did two xfstests runs using "gce-xfstests -c ext2/default -g auto", one on the ext4 dev branch, and one on linux-next 20230717, and I wasn't able to trigger the BUG. If you can trivially trigger it using LTP (perhaps with a low memory configuration in your test setup?), that would be useful to know. Cheers, - Ted