** Tags added: cscc
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https://bugs.launchpad.net/bugs/1811259
Title:
4.20 kernel on s390x VM crashes
Status in Linux:
Fix Released
Status in Ubuntu on IBM z Systems:
Since Kernel 5.0 landed in disco's release pocket today, I'm changing
the status to Fix Released.
** Changed in: linux (Ubuntu Disco)
Status: Fix Committed => Fix Released
** Changed in: ubuntu-z-systems
Status: Fix Committed => Fix Released
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Just double checked and can confirm that the commits "virtio-balloon:
tweak config_changed implementation", "virtio: don't allocate vqs when
names[i] = NULL" and "virtio_pci: use queue idx instead of array idx to
set up the vq" landed in disco-proposed kernel "Ubuntu-5.0.0-7.8" (as
"bf4dc0b",
Info: Smallest common upstream kernel level that includes all these 3
patches is v5.0-rc3
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Title:
4.20 kernel on s390x VM crashes
** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-z-systems
Status: New => Fix Committed
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** Changed in: linux (Ubuntu Disco)
Status: Triaged => Fix Committed
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Title:
4.20 kernel on s390x VM crashes
Status in
** Changed in: linux
Status: Confirmed => Fix Released
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Title:
4.20 kernel on s390x VM crashes
Status in Linux:
Fix
Also, I've tested this with today's upstream from Linus' repo, still
panics.
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Title:
4.20 kernel on s390x VM crashes
Status in
The following commits fix the issue:
https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h
=linux-next=bf4dc0b2beebfd9338df7c0bcf473b356f67cf66
https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h
=linux-next=a229989d975eb926076307c1f2f5e4c6111768e7
Fixes sent to kt mailing list for review
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https://bugs.launchpad.net/bugs/1811259
Title:
4.20 kernel on s390x VM crashes
Status in Linux:
Confirmed
Status in linux
** Tags added: s390x
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https://bugs.launchpad.net/bugs/1811259
Title:
4.20 kernel on s390x VM crashes
Status in Linux:
Confirmed
Status in linux package in Ubuntu:
The following fixes in vhost.git fix the issue:
https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h
=linux-next=bf4dc0b2beebfd9338df7c0bcf473b356f67cf66
https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h
** Bug watch added: Linux Kernel Bug Tracker #202283
https://bugzilla.kernel.org/show_bug.cgi?id=202283
** Also affects: linux via
https://bugzilla.kernel.org/show_bug.cgi?id=202283
Importance: Unknown
Status: Unknown
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Launchpad has imported 1 comments from the remote bug at
https://bugzilla.kernel.org/show_bug.cgi?id=202283.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
Finally bisected:
git bisect good
86a559787e6f5cf662c081363f64a20cad654195 is the first bad commit
commit 86a559787e6f5cf662c081363f64a20cad654195
Author: Wei Wang
Date: Mon Aug 27 09:32:17 2018 +0800
virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT
Negotiation of the
5.0-rc2 also fails to boot:
[0.761280] CPU: 0 PID: 7 Comm: kworker/u6:0 Not tainted 5.0.0-rc2 #1
[0.761282] Hardware name: IBM 2964 N63 400 (KVM/Linux)
[0.761288] Workqueue: events_unbound call_usermodehelper_exec_work
[0.761291] Krnl PSW : 0404e0018000 0016a360
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
** Tags added: disco
** Also affects: linux (Ubuntu Disco)
Importance: High
Status: Triaged
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5.0-rc1, no dice:
[0.398768] Linux version 5.0.0-rc1+ (ubuntu@ckingvm1) (gcc version 8.2.0
(Ubuntu 8.2.0-7ubuntu1)) #1 SMP Thu Jan 10 17:45:01 UTC 2019
[0.398770] setup: Linux is running under KVM in 64-bit mode
[0.398778] setup: The maximum memory size is 2048MB
[0.398799] numa:
This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1811259
and then change the status of the bug to 'Confirmed'.
If, due to the
Public bug reported:
Booting with 4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:
[0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
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