nce: Undecided => Medium
** Changed in: linux-gcp (Ubuntu Noble)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux-gke (Ubuntu Noble)
Status: New => In Progress
** Changed in: linux-gke (Ubuntu Noble)
Importance: Undecided => Medium
** Change
** Changed in: linux (Ubuntu Focal)
Status: Triaged => Won't Fix
** Changed in: linux (Ubuntu)
Status: Triaged => Won't Fix
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https://bugs.launchpad.net/bugs/2042564
Title:
A kernel bisect is underway. We should have further details regarding
the commit that introduced this regression soon.
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https://bugs.launchpad.net/bugs/2063315
Title:
Suspend & Resume
** Changed in: linux-gcp (Ubuntu Noble)
Status: New => In Progress
** Changed in: linux-gcp (Ubuntu Noble)
Importance: Undecided => High
** Changed in: linux-gcp (Ubuntu Noble)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
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Thanks, Eric! I'm going to build some test kernels and will post them
shortly.
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https://bugs.launchpad.net/bugs/2054810
Title:
Adding bpf to CONFIG_LSM in linux kernel
To manage
*** This bug is a duplicate of bug 2054810 ***
https://bugs.launchpad.net/bugs/2054810
** Changed in: linux (Ubuntu)
Status: Expired => Triaged
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** This bug has been marked a duplicate of bug 2054810
Adding bpf to
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Also affects: linux (Ubuntu Mantic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Jammy)
Impo
** Changed in: linux (Ubuntu)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu Jammy)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** No longer affects: linux-gcp (Ubuntu)
** No longer affects: linux-realtime (Ubuntu)
** C
As a general rule, the kernel internal interface changes all the time
and it cannot take into account out of tree module.
It's the responsibility of the maintainers of these modules to keep up
with upstream changes.
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ned-gcp-5.15 (Ubuntu)
Status: Confirmed => In Progress
** Changed in: linux-signed-gcp-5.15 (Ubuntu)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Package changed: linux-signed-gcp-5.15 (Ubuntu) => linux (Ubuntu)
** Also affects: linux (Ubuntu Jammy)
Importanc
** Tags removed: verification-needed-jammy-linux-gke
** Tags added: verification-done-jammy-linux-gke
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https://bugs.launchpad.net/bugs/2039720
Title:
Intel IDPF support
To manage
** Tags removed: verification-needed-bionic-linux-gcp-5.4
** Tags added: verification-done-bionic-linux-gcp-5.4
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https://bugs.launchpad.net/bugs/2049922
Title:
PCI ATS quirk patch
** Tags removed: verification-needed-focal-linux-gcp
** Tags added: verification-done-focal-linux-gcp
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Title:
PCI ATS quirk patch needed for
** Tags removed: verification-needed-bionic-linux-gcp-4.15
** Tags added: verification-done-bionic-linux-gcp-4.15
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Title:
PCI ATS quirk patch
in IDPF driver
* Other changes to network drivers largely adding #include directives
[Other Info]
* SF #00381197
** Affects: linux-gcp (Ubuntu)
Importance: Medium
Assignee: Joseph Salisbury (jsalisbury)
Status: In Progress
** Affects: linux-gke (Ubuntu)
Importance: Medium
I performed a bisect between the 5.4 and 5.15 kernels. The performance
regression was introduced by a stable update in 5.15.57 by the following
commit:
62b4db57eefec ("x86/entry: Add kernel IBRS implementation")
This commit applies IBRS kernel mitigation for Spectre_v2. IBRS is:
Indirect
** Also affects: linux (Ubuntu Kinetic)
Importance: High
Assignee: Joseph Salisbury (jsalisbury)
Status: In Progress
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Jammy)
Importance: Undecided => High
** Chan
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
** Package changed: linux (Ubuntu) => ubuntu-realtime
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** Description changed:
- The ARM64_SW_TTBR0_PAN was disabled by commit:
+ == SRU Justification ==
+ The config option CONFIG_ARM64_SW_TTBR0_PAN was unintentionally disabled in
the
+ linux-oracle kernels by the following commit:
c25f2bf469b3 ("UBUNTU: [config] oracle: Bring-up for arm64
** No longer affects: linux (Ubuntu Xenial)
** No longer affects: linux (Ubuntu Bionic)
** Changed in: linux (Ubuntu Impish)
Status: New => In Progress
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ce: Medium
Assignee: Joseph Salisbury (jsalisbury)
Status: In Progress
** Affects: linux (Ubuntu Xenial)
Importance: Medium
Assignee: Joseph Salisbury (jsalisbury)
Status: In Progress
** Affects: linux (Ubuntu Bionic)
Importance: Medium
Assignee: Joseph
Could not reproduce in 5.15.
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1938918
Title:
5.13 RT kernel hits scheduling while atomic with stress-ng enosys
stressor
To manage notifications about this bug go to:
** Changed in: linux (Ubuntu)
Assignee: Krzysztof Kozlowski (krzk) => Joseph Salisbury (jsalisbury)
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Title:
5.13 RT kernel hits schedul
** Changed in: linux (Ubuntu)
Assignee: Krzysztof Kozlowski (krzk) => Joseph Salisbury (jsalisbury)
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Title:
5.13 RT kernel hangs on
Public bug reported:
do_softirq does not exist on preempt RT kernel.
This is causing a failure in ftrace:ftracetest which reports: "echo: I/O
error".
Failure is reported for step 32 in Jenkins job:
23:48:45 DEBUG| [stdout] # selftests: ftrace: ftracetest
23:48:45 DEBUG| [stdout] # === Ftrace
** Changed in: linux (Ubuntu)
Status: In Progress => Fix Released
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Title:
Unable to reboot ARM64 node with 5.15 realtime
To manage
** Changed in: linux (Ubuntu Jammy)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1950968
Title:
v5.15 RT kernel fails to boot on some arm64 instances
The 5.11 kernel will not support realtime, so updating bug to reflect
Focal and 5.15.
** Changed in: linux (Ubuntu)
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu Hirsute)
Status: Confirmed => Invalid
** Summary changed:
- Unable to reboot ARM64 node with
The linux-modules-extra package is not a dependency for this kernel,
which prevented installation of the qede module.
I'll submit a patch to add extra as a dependency.
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** Changed in: linux (Ubuntu Jammy)
Status: Triaged => In Progress
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Title:
v5.15 RT kernel fails to boot on some arm64 instances
To
** Changed in: linux (Ubuntu Hirsute)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu Hirsute)
Importance: Undecided => Medium
** Changed in: linu
** Changed in: linux (Ubuntu Jammy)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu Jammy)
Importance: Undecided => Medium
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** Description changed:
There is a bug in the Linux block layer responsible for merging BIOs
that go across the page boundary. This bug was introduced in Linux 5.1
when the block layer BIO page tracking is enhanced to support multiple
pages.
Without this patch, data corruption can
Public bug reported:
There is a bug in the Linux block layer responsible for merging BIOs
that go across the page boundary. This bug was introduced in Linux 5.1
when the block layer BIO page tracking is enhanced to support multiple
pages.
Without this patch, data corruption can occur. The
Public bug reported:
Microsoft would like to request inclusion of the following patch in the
5.4 and later kernels:
a81a38cc6dda ("scsi: storvsc: Parameterize number hardware queues")
Public bug reported:
This patch set consists of 5 patches that are now in mainline.
The patches add the VF driver for Microsoft Azure Network Adapter
(MANA), and also changes the hv_netvsc driver's netvsc/VF binding logic
to check both the MAC address and the serial number (this is required by
Public bug reported:
Microsoft received a customer report of failures when trying to take a
kdump. This issue was resolved by three small Linux kernel fixes.
Microsoft would like to request this following three commits in all
supported releases:
Public bug reported:
A soft lockup is happening to Customers due to a bug in netvsc_poll.
Ubuntu 4.15.0-1103 has CONFIG_NET_POLL_CONTROLLER=y in kernel config
file, there is a bug in netvsc that may cause CPU lockup with
POLL_CONTROLLER. This bug has been fixed by the following patch:
commit
It looks like a fix for this issue is already in the 137 kernel.
The change log for the -136 update shows a single change related to
Hyper-V, and that change broke the ability to open /dev/fb0 and mmap it,
which is what the graphic desktop will do. Running in non-graphics mode
with just a shell
Public bug reported:
We have had customer reports of kernel hangs related to MLX4. Mellanox
has addressed the issue with the following two patches:
fed91613c9dd ("net/mlx4_en: Avoid scheduling restart task if it is already
running")
ba603d9d7b12 ("net/mlx4_en: Handle TX error CQE")
Microsoft
Public bug reported:
Azure is planning to have VM sizes that boot from NVMe storage, so the NVMe
drivers need to be in the kernel image itself, or if the NVMe driver is built
as a module, the module needs to be included in the initramfs file. Setting
CONFIG_HYPERV=Y, CONFIG_PCI_HYPERV=Y and
Public bug reported:
We identified a problem that is causing slow logging to the console for
customers.
The following commit resolves this issue as well as other cache relates issues:
325073ae3485 ("video: hyperv_fb: Fix the cache type when mapping the VRAM")
Patch details from it's commit
Marcelo, will these fixes be avaiable in the last SRU cycle of 2020?
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Title:
[linux-azure] IP forwarding issue in netvsc
To manage
Public bug reported:
Microsoft would like to request the following commit in all supported releases
that run on Azure:
915cff7f38c5 (“PCI: hv: Fix hibernation in case interrupts are not re-created”)
Commit details:
pci_restore_msi_state() directly writes the MSI/MSI-X related registers
via
Public bug reported:
Microsoft would like to request the following upstream commit in all
releases supported on Azure. This commit improves a signification delay
in hibernation/resume:
55c4478a8f0e("PM: hibernate: Batch hibernate and resume IO requests")
Details of this commit:
Hibernate and
If possible, can we also get a test kernel for this bug when avaiable?
Folks would like to confirm the two patches fix the issue prior to
release of the image.
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It would be great if we can get the fixes into the next SRU cycle, which
is the last one for 2020.
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Title:
[linux-azure] IP forwarding issue in
Public bug reported:
We identified an issue with the Linux netvsc driver when used in IP
forwarding mode. The problem is that the RSS hash value is not
propagated to the outgoing packet, and so such packets go out on channel
0. This produces an imbalance across outgoing channels, and a possible
Public bug reported:
Microsoft would like to request a change to the time keeping method in
the Azure images.
We would like to request that an Azure image uses the Azure host for
time sync by default. This will require the use of the Chrony package.
The Chrony package would need to be
Public bug reported:
This is a request to inclue a patch, submitted to the upstream linux-
hyperv mailing list, in the linux-azure kernels.
Microsoft would like to request this patch in the 16.04 (4.15) and newer
azure kernels. This patch fixes a prior commit, hence the SRU request:
Fixes:
An investigation is currently underway for the issue with the 4.15
kernel.
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https://bugs.launchpad.net/bugs/1883261
Title:
[linux-azure] Two Fixes For kdump Over Network
To manage
The following link holds test kernels for 5.4, 5.3, and 4.15:
https://kernel.ubuntu.com/~kms/azure/lp1883261/
5.4 was a clean apply, though 5.3 and 4.15 required some changes. Please
test to verify the added patches resolve the issue.
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I've been testing with the 4.15 kernel and using the following wiki for
guidance of using kdump/ssh:
https://ubuntu.com/server/docs/kernel-crash-dump
I first confirmed I could kdump to local disk. Next, I configured kdump per the
wiki to use ssh.
However, everytime I cause a crash, the kexec
The requested commit has now landed upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/hv?h=v5.9-rc1=608a973bd52ef1705941b18f55e39655fcfe9cdb
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Public bug reported:
Currently, Hyper-V may be notified of a panic for any die event.
However, this results in false panic notifications for various user space traps
that are die events.
The following commit fixes this by ignoring die events that is not an
oops:
608a973bd52e ("Drivers: hv:
Public bug reported:
Microsoft would like to request two kdump related fixes in all releases
supported on Azure. The two commits are:
c81992e7f4aa1 ("PCI: hv: Retry PCI bus D0 entry on invalid device state")
83cc3508ffaa6 ("PCI: hv: Fix the PCI HyperV probe failure path to release
resource
Public bug reported:
There was a previous bug requesting the following two commits in 18.04:
84a1f5b1cc6f ("cifs: Fix potential softlockups while refreshing DFS cache")
2084ed57167c ("CIFS: Only send SMB2_NEGOTIATE command on new TCP connections")
There is an issue now, which requires these
This message can be ignored. This bogus "testing the buffer" message is
something that inadvertently got into upstream code via commit:
13d0f7b814d9 net/bpfilter: fix dprintf usage for /dev/kmsg
This message is fixed by the following commit:
41c55ea6c2a7 net/bpfilter: remove superfluous
** Also affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1881787
Title:
High rate of packet loss upgrading to kernel 5.3 and
Public bug reported:
There are three modules where no description exists causing issues
during a customers certification test:
hid_hyperv
hyperv_keyboard
hv_vmbus
Three patches exist upstream which fix this issue. The mainline commits
are:
64caea53e07f ("HID: hyperv: Add a module description
Public bug reported:
Microsoft would like to request the following two commits in all
releases supported on Azure:
999dd956d838 ("PCI: hv: Add support for protocol 1.3 and support
PCI_BUS_RELATIONS2")
f9ad0f361cf3 ("PCI: hv: Decouple the func definition in hv_dr_state from VSP
message")
These
Additional conversations for the bug are happening in bug 1874544
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https://bugs.launchpad.net/bugs/1856375
Title:
[linux-azure] Request to autoload mlx4/mlx5 modules for DPDK
To
Public bug reported:
Microsoft would like to request commits to enable VM hibernation in the
Azure 5.4 kernels for 18.04 and 20.04.
Some of the commits needed to enable VM hibernation were included in
mainline 5.4 and older. However, 24 commits were added in 5.5 and
later, which are required in
For reference, the other commit that fixed this is:
e4a58cdd069e6 ("clocksource/drivers/hyper-v: Untangle stimers and timesync from
clocksources")
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I see the fix is already included in Focal, from a different commit.
This bug can be closed.
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https://bugs.launchpad.net/bugs/1877647
Title:
Make sched clock return nanoseconds
Public bug reported:
This issue is happening with a Bionic VM on Azure. The VM has a
separate data disk mounted in addition to the root disk. The separate
data disk is used to hold kernel git repos and is formatted as ext4.
After applying the latest Bionic updates, the kernel was upgraded to
Public bug reported:
After booting, there's an error message in dmesg:
"blk_update_request: I/O error, dev fd0, sector 0"
There’s no point in having a floppy driver, and the “I/O error dev fd0 sector
0” messages are distracting where there is no real issue.
Blacklisting floppy can avoid this
Public bug reported:
Microsoft would like to request the following three patches in all
releases supported on Azure:
351e1581395fc (“hv_netvsc: Add XDP support”)
12fa74383ed4d (“hv_netvsc: Update document for XDP support”)
184367dce4f7 (“hv_netvsc: Fix XDP refcnt for synthetic and VF NICs”)
Public bug reported:
The problem was introduced in Linux kernel version 5.4, and was fixed in
5.6. So only users of the 5.4 and 5.5 kernels will see this problem,
which means Ubuntu 20.04 at the moment.
The fix was backported to upstream stable 5.4, so it should be picked up
via stable
Public bug reported:
While deploying a VM in D series (D8S_V3 and D16S_V3) and enabling
accelerated networking, MLX5 drivers are getting installed. However,
accelerated networking is not showing as enabled in guest OS. The same
VM is showing enabled from portal.
The problem is in the Mellanox
Public bug reported:
Microsoft would like to request two commits in all releases supported on
Azure. These commits benefit SAP workloads.
These requested commits will enable support for Invariant TSC in Linux
guest VMs. The invariant TSC means that the TSC continues at a fixed
rate regardless
Public bug reported:
Microsoft would like to request the inclusion of commits in all releases
supported on Azure. These commits will enable reporting 4 Kbytes of
dmesg information to Hyper-V when Linux takes a panic.
Microsoft would like to get all releases reporting this information, so
that
Public bug reported:
Microsoft and Mellanox would like to request the following two commits
in the releases that run on Azure:
3f89b01f4bba IB/mlx5: Align usage of QP1 create flags with rest of mlx5 defines
11f552e21755 IB/mlx5: Test write combining support
These commits landed in mainline as
Public bug reported:
A Gen-1 Ubuntu 19.10 VM on Azure was created and upgraded to Ubuntu
20.04 by “do-release-upgrade –d”.
Then the latest Ubuntu v5.6 kernel was installed from
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.6/. As soon as a
reboot was performed, a panic with the v5.6 kernel
** Also affects: initramfs-tools
Importance: Undecided
Status: New
** No longer affects: initramfs-tools
** Also affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
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Public bug reported:
The QAT is a PCIe device which supports SR-IOV. It is used to
accelerate the crypto and compression operations by hardware.
There is additional info for this hardware on the Intel website:
The following can be used as a work around:
For new VM:
Build VM without Nvidia Extension
sudo apt-get -o Dpkg::Options::="--force-overwrite" install -y nvidia-440
Apply Nvidia Extension for Linux to VM
Continue with setup
For existing VM with failed installation:
sudo apt-get -o
Public bug reported:
The Nvidia GPU driver cannot be installed for VM size Standard_NC6 but
it is correctly installed for Standard_NV6. This is happening on Ubuntu
Server 18.04 LTS.
To repro this issue:
1. Create a Virtual Machine with image Ubuntu Server 18.04 LTS and size
Standard_NC6
2.
Public bug reported:
Bug description and repro:
Run the following commands on host instances:
Prepare the overlayfs directories:
$ cd /tmp
$ mkdir -p base/dir1/dir2 upper olwork merged
$ touch base/dir1/dir2/file
$ chown -R 10:10 base upper olwork merged
Verify that the directory is
Public bug reported:
An issue has been identified with the NETVSC driver on Azure VMs. This
issues has been fixed by four patches, which are available in the
mainline kernel.
The issues is the following:
Outgoing traffic is sent from the guest to the Azure host over multiple
parallel channels.
Public bug reported:
After creating a Lv2 VM (OS - ubuntu 18.04) it was found that
uio_pci_generic is missing. It is needed to attach SPDK to nvme disk.
The kernel build config file that Canonical provides in Ubuntu 18.04
images shows CONFIG_UIO_PCI_GENERIC=m, indicating that the module was
Public bug reported:
Several Azure VMs on AKS and are experiencing some random node restarts.
The issues was narrowed down to a NULL pointer dereference in
smb2_push_mandatory_locks().
The following commit fixes this issue:
6f582b273ec2 ("CIFS: Fix NULL-pointer dereference in
Hi Juerg,
The tests were pointing at a PPA that had moved. Once the tests were
updated to the new PPA, the issue was resolved. This bug can be marked
as invalid.
** Changed in: linux-azure (Ubuntu)
Status: Confirmed => Invalid
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Public bug reported:
We ran an RDMA test case against gallery image Ubuntu 16.04 (with
proposed kernel), and found the below issue. The kernel prior to
proposed does not exhibit this bug, so it is a regression:
The issue is when ibv_devinfo is run, we get the below info:
ibv_devinfo
Public bug reported:
Ubuntu 18.04 images in the marketplace do not automatically load the
required mlx drivers. (mlx4_ib|mlx5_ib and mlx4_en|mlx5_en)
Someone trying DPDK on Ubuntu 18.04 has raised an issue on Azure DPDK
document(https://github.com/MicrosoftDocs/azure-docs/issues/44303).
To
** Description changed:
The actual fix for this issue would be to backport two related patches
that were accepted upstream in Feb/March 2019. But doing a full
- backport is complicated because of dependencies on other new code.
+ backport is complicated because of dependencies on other new
Public bug reported:
The actual fix for this issue would be to backport two related patches
that were accepted upstream in Feb/March 2019. But doing a full
backport is complicated because of dependencies on other new code.
Instead of a full backport of these patches, a SAUCE patch was generated
** Attachment added: "dmesg"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1853014/+attachment/5306229/+files/dmesg
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https://bugs.launchpad.net/bugs/1853014
Title:
GPU
** Attachment added: "pipeline-cloudtest-manual_2110.msg"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1853014/+attachment/5306232/+files/pipeline-cloudtest-manual_2110.msg
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** Attachment added: "syslog"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1853014/+attachment/5306233/+files/syslog
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Title:
Public bug reported:
We found a GPU device disable/enable test failure, and it is related to
below call trace. When GPU device is disable, this call-trace happens at
the device disable step.
The system does not panic but the driver is not loaded back.
%echo 1 >
** Attachment added: "pipeline-cloudtest-manual_2110.msg"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1853014/+attachment/5306231/+files/pipeline-cloudtest-manual_2110.msg
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** Attachment added: "pipeline-cloudtest-manual_2109.msg"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1853014/+attachment/5306230/+files/pipeline-cloudtest-manual_2109.msg
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Yes we need that patch. The commit description is misleading, as this
commit actually fixes a bug on data corruption for SCSI devices.
In the latest Ubuntu 4.15 kernel, __blk_mq_try_issue_directly() (in
"block/blk-mq.c") calls blk_mq_sched_insert_request() if
q->mq_ops->queue_rq() returns
This bug only affects kdump on 19.04 and not the 5.0 kernel on 18.04.
Since this is the case, I'll close this bug since 19.04 is EOL soon.
** Changed in: linux-azure (Ubuntu)
Status: New => Invalid
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Bugs, which is
Public bug reported:
By default our test cases use DS1_v2 to test KDUMP, when we trigger a
kernel panic, the VM enters into emergency mode, which can be seen on
the serial console.
This issue can be resolved if the VM is resized from DS1_v2 (1 vcpus,
3.5 GiB memory) to DS12_v2 (4 vcpus, 28 GiB
Public bug reported:
Microsoft would like to request the following patch in the 16.04 and
18.04 Azure kernels:
adfbd028e155 ("scsi: storvsc: Add ability to change scsi queue depth")
This patch will add functionality to allow the SCSI queue depth to be
changed by utilizing the
Public bug reported:
There are three patches that prevent possible data corruption. The
three commits are:
aef1897cd36d ("blk-mq: insert rq with DONTPREP to hctx dispatch list when
requeue")
c616cbee97ae ("blk-mq: punt failed direct issue to dispatch list")
923218f6166a ("blk-mq: don't
Public bug reported:
Microsoft would like to request the following mainline commit be added to
linux-azure 16.04 and 18.04:
f73f8a504e27 PCI: hv: Use bytes 4 and 5 from instance ID as the PCI domain
numbers
This commit was added to mainline in v5.4-rc1~63^2~8^2
This was recommended by Azure
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