Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-hwe-5.4 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1920660
Title:
Missing Commit for 5.4-Kernel breaks xen Dom0
Status in linux package in Ubuntu:
Confirmed
Status in linux-hwe-5.4 package in Ubuntu:
Confirmed
Bug description:
You commited "xen: Fix event channel callback via INTX/GSI" for kernel
5.4.0-67 for HWE 18.04 and 20.04.
This commit is incomplete and breaks Ubuntu as Dom0 for xen. You need also
Commit "xen: Fix XenStore initialisation for XS_LOCAL"
See https://lkml.org/lkml/2021/1/28/1235
See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915195
Upstream:
Commit: 3499ba8198cad47b731792e5e56b9ec2a78a83a2
Fixing Commit: 5f46400f7a6a4fad635d5a79e2aa5a04a30ffea1
5.10:
Commit: fa5f2e04daa44961a1026e93f0cc88caa3c27d3d (5.10.11)
Fixing Commit: 5f3d54c00f1f2682cee9c590c22655b0330ffd18 (5.10.13)
5.4:
Commit: a09d4e7acdbf276b2096661ee82454ae3dd24d2b (5.4.93)
Fixing commit 2c7b4b25293aebd2563188f7196f6e0ff0cb0f9f (5.4.95)
Without this patch you cannot start guests (DomU) on this machine!
Error message while creating DomU:
libxl: error: libxl_device.c:1105:device_backend_callback: Domain X:unable to
add device with path /XXXX
libxl: error: libxl_create.c:1452:domcreate_launch_dm: Domain X:unable to add
disk devices
See:
- https://lkml.org/lkml/2021/1/28/1231 and https://lkml.org/lkml/2021/1/29/14
-
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.4.107&id=2c7b4b25293aebd2563188f7196f6e0ff0cb0f9f
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.95
-
http://changelogs.ubuntu.com/changelogs/pool/main/l/linux-hwe-5.4/linux-hwe-5.4_5.4.0-67.75~18.04.1/changelog
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915195
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