I've send a patch for the kernel part of this request:
https://lists.ubuntu.com/archives/kernel-team/2019-March/099704.html
Additionally to it the kmod's "blacklist bochs-drm" entry from it's
/etc/modprobe.d/blacklist-framebuffer.conf file it ships would need to
get removed.
With this I can succe
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1861147
Title:
No fc connect after update from 4.15.0-72 to 4.15.0-76
Status in linux package
Public bug reported:
Mostly the same info as on a related kernel.org bugzilla entr[0].
[0]: https://bugzilla.kernel.org/show_bug.cgi?id=205441
We got issues reported with old Intel CPUs and Linux guest run with
QEMU/KVM after a recent kernel update which is based on
Ubuntu-5.0.0-33.35.
I bisect
Thanks Mr. Kernel Bot but I really do not think that this bug misses
logs :)
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Tags removed: verification-needed-wily
** Tags added: verification-done-wily
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https://bugs.launchpad.net/bugs/1552592
Title:
KVM/QEMU live migration fails with Ubuntu wi
** Attachment added: "backtrace.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1540532/+attachment/4581592/+files/backtrace.log
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Hi,
commit 3f11933efc9ef55ecb2ac7e6d626e8d05a99a4b1 - KVM: x86: expose MSR_TSC_AUX
to userspace
breaks KVM/QEMU live migration of host with a graphical user interface.
== Software Versions: ==
Kenel: this one, namely: Ubuntu-4.2.0-30.35
kvm-qemu: 2.5.0
== Reproduction ==
Install kernel with 3f1
Follow up, I tried it with a Ubuntu Server and Alpine Linux without any
gui and it frozed also, same backtrace.
Sorry I could swear Alpine Linux did not froze when I first tested it in
a nested VM.
** Attachment added: "backtrace-qemu-migration-hang.log"
https://bugs.launchpad.net/ubuntu/+sou
Soo, after some digging I found the root cause, while those two KVM patches
listed above were backported/added another on was not, namely:
81b1b9ca6d5ca5f3ce91c0095402def657cf5db3
KVM: VMX: Fix host initiated access to guest MSR_TSC_AUX
I backported it to this Ubuntu-4.2.0-30.35 kernel and tested
For easy access, upstream patch is here (and also already included in
ubuntu-xenial 4.4 kernel (git master repo))
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81b1b9ca6d5ca5f3ce91c0095402def657cf5db3
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Public bug reported:
commit 3f11933efc9ef55ecb2ac7e6d626e8d05a99a4b1 - "KVM: x86: expose
MSR_TSC_AUX to userspace" from ubuntu-wily master git tree breaks
KVM/QEMU live migration of host with a graphical user interface.
== Reproduction ==
Install kernel with 3f11933efc9ef55ecb2ac7e6d626e8d05a99a
** Patch added:
"0001-KVM-VMX-Fix-host-initiated-access-to-guest-MSR_TSC_A.patch"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552592/+attachment/4587316/+files/0001-KVM-VMX-Fix-host-initiated-access-to-guest-MSR_TSC_A.patch
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> This bug is missing log files that will aid in diagnosing the
problem. From a terminal window please run:
As this cannot be tracked through the hosts (log) and I posted this bug
report here at a request at the kernel ML from Kamal to track this issue
(and the patch is already queued and ACKed by
This came indeed in via a cherry-pick made by Ubuntu [0], that was an
early attempt to fix a bug that was actually present in the ceph layer,
as confirmed by the original patch author[1], and fixed actually there
now [2].
[0]: https://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux/+git/man
FYI, we solved a similar sounding issue by clearing the PKRU bit if it
was set in the to-be-restored XSAVE blob, but not available in the
current vCPU feature flags:
https://git.proxmox.com/?p=pve-
kernel.git;a=blob;f=patches/kernel/0008-kvm-xsave-set-mask-out-PKRU-bit-
in-xfeatures-if-
vCPU.patch
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