This bug is awaiting verification that the linux- gcp-6.8/6.8.0-1019.21~22.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux- gcp-6.8' to 'verification-done-jammy-linux-gcp-6.8'. If the problem still exists, change the tag 'verification-needed-jammy-linux-gcp-6.8' to 'verification-failed-jammy-linux-gcp-6.8'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-gcp-6.8-v2 verification-needed-jammy-linux-gcp-6.8 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-gcp in Ubuntu. https://bugs.launchpad.net/bugs/2085904 Title: Enable IOMMU Passthrough by default Status in linux-gcp package in Ubuntu: New Status in linux-gcp source package in Jammy: New Bug description: SRU Justification [Impact] C3 bare metal instances run into a problem on 6.8 kernels due to Intel IOMMU being enabled by default. After performing enough disk-intensive work on the instance, the system becomes unusable and reports I/O errors at the command line until rebooted, losing data in the process. The root issue is being worked on long-term, but in the meantime we will apply a workaround to the issue for affected customers. This fix has a negative impact on security, so it is limited to Jammy kernels for which this issue is a regression. Noble kernels have always had this problem and therefore will be waiting for the long-term fix. [Fix] Change the kernel config to use IOMMU passthrough by default. [Test Plan] Perform up to 50 kernel builds on the instance in sequence. Failures on affected instances are usually detected after only 1 or 2. [Regression potential] Regression potential is especially low for Jammy as we are essentially reverting a breaking change. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-gcp/+bug/2085904/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
