This happens for me if zswap was enabled with zsmalloc pool. ref: https://www.spinics.net/lists/linux-mm/msg245604.html
For 20.04 hwe, this also affects 5.11.0.25 but previous hwe 5.8.0.x were not affected. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939996 Title: kernel BUG at mm/zswap.c:1275 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939996/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs