BUG: unable to handle kernel NULL pointer dereference at 00000000000000f0

[Leonardo Müller]

The bug reported https://bugzilla.kernel.org/show_bug.cgi?id=201377 is present in the kernel from hwe-18.04-edge in Bionic Beaver and seems to cause the same problems.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.18.0-12-lowlatency 4.18.0-12.13~18.04.1
ProcVersionSignature: Ubuntu 4.18.0-12.13~18.04.1-lowlatency 4.18.17
Uname: Linux 4.18.0-12-lowlatency x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Nov 26 12:01:32 2018
InstallationDate: Installed on 2017-06-13 (530 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: linux-signed-hwe-edge
UpgradeStatus: Upgraded to bionic on 2017-10-20 (402 days ago)

[Po-Hsu Lin (cypressyew)]

Hello,
the patch mentioned in the link has landed in 4.18, do you still have this issue with the latest HWe kernel on Bionic?

(Although I think this might still be an issue for 4.15)
Thanks

[Leonardo Müller (leozinho29-eu)]

The HWE kernel on Bionic does not have this problem anymore, as it was patched in a previous update.

Previous kernel versions (as 4.15 and 4.17) seem to never hit this particular bug, but the kernel bugzilla discussion suggests the bug was present on older versions.

[Launchpad Janitor (janitor)]

[Expired for linux-signed-hwe-edge (Ubuntu) because there has been no activity for 60 days.]