Public bug reported: SRU Justification:
[Impact] EC2 team discovered a Linux bug during ML/HPC workload testing on P5 instances. The issue is described at https://lore.kernel.org/all/87ed6soy3z.ffs@tglx/ ("iounmap() on x86 occasionally fails to unmap because the provided valid ioremap address is not below high_memory."). [Fix] This is fixed by upstream commit ea72ce5da22806d5713f3ffb39a6d5ae73841f93: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ea72ce5da22806d5713f3ffb39a6d5ae73841f93 [Test Plan] AWS tested [Where problems could occur] If there was code that made incorrect assumptions on how memory was laid out and used, it might break the functionality, but seeing as this is fixing an error, the chances of that should be fairly low. [Other Info] SF #00392654 ** Affects: linux-aws (Ubuntu) Importance: High Status: Fix Released ** Affects: linux-aws (Ubuntu Noble) Importance: Undecided Assignee: Philip Cox (philcox) Status: In Progress ** Changed in: linux-aws (Ubuntu) Importance: Undecided => High ** Changed in: linux-aws (Ubuntu) Status: New => In Progress ** Changed in: linux-aws (Ubuntu) Status: In Progress => New ** Also affects: linux-aws (Ubuntu Noble) Importance: Undecided Status: New ** Changed in: linux-aws (Ubuntu) Status: New => Fix Released ** Changed in: linux-aws (Ubuntu) Assignee: Philip Cox (philcox) => (unassigned) ** Changed in: linux-aws (Ubuntu Noble) Assignee: (unassigned) => Philip Cox (philcox) ** Changed in: linux-aws (Ubuntu Noble) Status: New => In Progress ** Description changed: SRU Justification: [Impact] EC2 team discovered a Linux bug during ML/HPC workload testing on P5 instances. The issue is described at https://lore.kernel.org/all/87ed6soy3z.ffs@tglx/ ("iounmap() on x86 occasionally fails to unmap because the provided valid ioremap address is not below high_memory."). - [Fix] This is fixed by upstream commit ea72ce5da22806d5713f3ffb39a6d5ae73841f93: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ea72ce5da22806d5713f3ffb39a6d5ae73841f93 - [Test Plan] AWS tested [Where problems could occur] If there was code that made incorrect assumptions on how memory was laid out and used, it might break the functionality, but seeing as this is fixing an error, the chances of that should be fairly low. + + + [Other Info] + SF #00392654 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2080414 Title: [N][AWS]Backport x86/kaslr fix impacting ML/HPC workloads To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-aws/+bug/2080414/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
