As requested by the kernel team (in https://lists.ubuntu.com/archives /kernel-team/2020-August/112775.html), I will do some additional testing for this SRU to really make sure it won't cause any regressions.
I provisioned a lab machine on segmaas, running Bionic. I installed the 4.15.0-116-generic kernel from -proposed on it. I built the zero_page_refcount.c kernel module, and inserted it into the running kernel. I then got ksm_refcnt_overflow.sh running in a screen session, creating and destroying virtual machines in an infinite loop. This way we will know the code path has been exercised a fair amount. I will leave this running creating and destroying virtual machines for a week or so, and I will report back with the results. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1837810 Title: KVM: Fix zero_page reference counter overflow when using KSM on KVM compute host To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1837810/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
