Ubuntu
linux-gcp package

  1. Bug #1819504
  2. Comment #0

Comment 0 for bug 1819504

Revision history for this message
Terry Rudd (terrykrudd) wrote :

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

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.