This bug is awaiting verification that the 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- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'.
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! -- 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/1819504 Title: tcmu user space crash results in kernel module hang. Status in linux package in Ubuntu: Incomplete Status in linux-gcp package in Ubuntu: Invalid Status in linux source package in Bionic: Fix Committed Status in linux-gcp source package in Bionic: In Progress Status in linux source package in Cosmic: Fix Committed Status in linux-gcp source package in Cosmic: In Progress Bug description: With the 4.15.0 kernel version used in bionic GCP/GKE, if the tcmu user space code crashes while handling a netlink message from the kernel, the kernel module will be stuck waiting for the response. This situation can only be resolved with a server reboot. === SRU Justification === [Impact] With this particular user-space crash in the current Ubuntu image it results in a hang hobbles the entire physical server. [Fix] The request is for Canonical to backport the patch https://patchwork.kernel.org/patch/10319623/ to the bionic 4.15.0 kernel [** CORRECTION: See comment #2 ***] There were a number of mainline upstream commits to apply as part of the backport [Test] unavailable [Regression Potential] Low. it's all mainline commits, and affects only that driver. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1819504/+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
