This issues is due to a test case bug. Please close.
** Changed in: linux-azure (Ubuntu)
Status: New => Invalid
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Title:
** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
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Title:
[linux-azure] panic in ext4_resize
Public bug reported:
Can you please pick up the following 4 patches? They resolve this live
migration that was reported by a mutual customer.
PCI: hv: Add pci_destroy_slot() in pci_devices_present_work(), if necessary
PCI: hv: Add hv_pci_remove_slots() when we unload the driver
PCI: hv: Fix a mem
Will do. Thanks, Marcelo!
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Title:
[Hyper-V] Enable CONFIG_HOTPLUG_CPU in linux-azure
Status in linux-azure package in Ubuntu
I modified your script to perform 5000 reboots. I'm up to 3508 reboots
now without hitting the bug. I'll let it run for a while longer. I'll
also compare our environments to see if there is a difference.
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** Changed in: linux (Ubuntu)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu Bionic)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu Cosmic)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
Public bug reported:
The following commit was requested in the 18.04 Bionic kernel for Azure:
c967590457ca scsi: storvsc: Fix a race in sub-channel creation that can cause
panic
This commit was included when it was requested in bug 1805304. However,
the 18.04 Bionic kernel for Azure was based o
The reason this missing commit is now causing a panic is because it
Fixes the following commit, which is added by 4.18.0-1015:
c40598d9e67c vmbus: split ring buffer allocation from open
git describe --contains c40598d9e67c
Ubuntu-azure-4.18.0-1015.15_18.04.1~57
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And looking a little further, commit ae6935ed7d42(Bionic commit
c40598d9e67c) was added per bug 1812123 for DPDK. In that bug, we
requested two commits:
b5679cebf780 ("vmbus: fix subchannel removal")
5e3c420dcca5 ("uio_hv_generic: set callbacks on open")
However, commit b5679cebf780 is a fix for
** Description changed:
- The following commit was requested in the 18.04 Bionic kernel for Azure:
+ The following commit is requested in the 18.04 Bionic kernel for Azure:
c967590457ca scsi: storvsc: Fix a race in sub-channel creation that can cause
panic
This commit was included when it
These commits are not needed in the 4.15 kernel. The only kernels that
need the fixes are the ones that include the following commit:
a15f2c08c708 ("PCI: hv: support reporting serial number as slot
information")
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Public bug reported:
The following and their prerequisites should be applied to all releases
that have SRIOV. The patches originated from Mellanox.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/infiniband/hw/mlx5?id=e5366d309a772fef264ec85e858f9ea46f939848
http
The following commit was added in bug fa55b5d226dd.
7ac257b862f2c (“blk-mq: remove the request_list usage”)
This commit cleans up unused code in block-mq (mq uses pre-allocated
tags to allocate request, not request_list as it's used only in legacy
queue).
A test kernel with a revert of this comm
The bug number from comment one should have been bug 1819689
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Title:
[linux-azure] Storage performance drop on RAID
Status i
This commit was also added to the Ubuntu-azure-4.18.0-1017 kernel. Are
we seeing expected performing with that kernel?
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Title:
If it would be best, I can open a new bug for those two additional
commits.
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Title:
[linux-azure] Commit To Improve NVMe Perfo
It was found that 4.15 has a couple more patches missing for NVMe, those
patches are required to get to the target number of IOPS.
The commits are:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/nvme/host/pci.c?h=v5.1&id=f9dde187fa921c12a8680089a77595b866e65455
@Marcelo Cerri, just to confirm, the test kernel posted in comment #6
only had commit 7ac257b862f2c reverted?
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Title:
[linux
This patch was intended to increase performance, not reduce it. Is it
too late to revert it?
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Title:
[linux-azure] Storage p
@marcelo, we do want the changes requested in comment #5 in bug 1819689.
We can wait for the results of Long Li's investigation before proceeding
there.
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Yes, that is correct. Comment #6. Sorry for the typo.
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Title:
[linux-azure] Storage performance drop on RAID
Status in lin
Public bug reported:
The 4.15 kernel require three patches for NVMe, those patches are
required to get to the target number of IOPS.
The commits are:
7ac257b862f2c (“blk-mq: remove the request_list usage”)
f9dde187fa921 ("nvme-pci: remove cq check after submission")
1ab0cd6966fc4 ("nvme-pci: spl
** Summary changed:
- [linux-azure] Commits Requested in 16.04 and 18.04 for Azure Kernel
+ [linux-azure] Commits Requested in 16.04 for the Azure Kernel
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Public bug reported:
A team within Microsoft is running the linux-azure Ubuntu kernel on a
large AI cluster. They are hitting an issue which is resolved by the
following commit:
https://github.com/torvalds/linux/commit/ebaf39e6032faf77218220707fc3fa22487784e0
The bug is that threads can get st
Public bug reported:
We are seeing a long delay, about 100s, when booting new E32s_v3 VMs.
We don’t see this delay with smaller sized Ubuntu VMs(D2s and NC6
sizes).
I attached a screen shot of the boot delay. You can see between
7.022911 and 101.325958 seconds there is no activity.
** Affects:
** Tags added: kernel-hyper-v
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Title:
[Hyper-V] KVP daemon fails to start on first boot of disco VM
Status in linux package in Ubun
bug 1819689 is a complimentary performance bug.
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Title:
Add CONFIG_NO_HZ_FULL=y to linux-azure kernels
Status in linux-azure
** Tags added: kernel-hyper-v
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Title:
kernel linux-image-4.15.0-44 not booting on Hyperv Server 2008R2
Status in linux package in U
Public bug reported:
This is a request to include the following two commits in 16.04 and
18.04 linux-azure:
fc96df16a1ce ("Drivers: hv: vmbus: Return -EINVAL for the sys files for
unopened channels")
ba50bf1ce9a5 ("Drivers: hv: vmbus: Check for ring when getting debug info")
Both commits are fi
** Changed in: linux-azure (Ubuntu)
Status: Triaged => New
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Title:
[Hyper-V] kdump is broken on trusty with linux-azure
** Information type changed from Private Security to Public
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Title:
[Hyper-V] Enable CONFIG_HOTPLUG_CPU in linux-azure
Status
** Tags added: kernel-hyper-v
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Title:
Azure Instance never recovered during series of instance reboots.
Status in linux-azure
** Tags added: kernel-hyper-v
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Title:
Kernel Panic while rebooting cloud instance
Status in linux-azure package in Ubuntu:
Are you able to share the script that reporduces this bug and bug
1822133?
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Title:
Kernel Panic while rebooting cloud instance
Thanks Sean and Colin! I'm going to see if I can reproduce it. If I
can, I do the usual investigation to see if its a regression, fixed
upstream and if a bisect will help.
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Public bug reported:
These two commits were needed to to get XDP working on Azure.
This set of patches came about while investigating and XDP generic issue
on Azure. The split brain nature of the accelerated networking exposed
issues with the stack device model.
The following two commits are cur
Public bug reported:
No VFs inside the VM.
Unfortunately this issue doesn’t have a 100% repro. Sometimes all the
VFs are missing, other times a few are available and the rest are
missing.
The best test case to catch this issue is VERIFY-ENABLE-DISABLE-SRIOV-
ON-EXISTING-VM.
Comparing the logs b
Public bug reported:
A mutual customer is reporting ssh is not working on a Xenial based VM.
This VM is running the 4.4 based Xenial kernel and not a custom linux-
azure kernel.
After an investigation this is a known old signaling issue. The 4.4
based Xenial kernels require the following patch:
I still haven't been able to reproduce this. If you can reproduce this
easily, maybe I can provide some kernels to be tested?
I'll keep trying to reproduce here. I compared my VM settings to why is
in the bug description, and I have the same config, except the region.
I wouldn't think that would
** Tags removed: verification-needed-xenial
** Tags added: verification-done-xenial
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https://bugs.launchpad.net/bugs/1824879
Title:
linux-azure: Add the Catapult FPGA
Public bug reported:
eBPF is available as of kernel version 4.15, which is used on AKS nodes.
Enabling JIT eBPF (built-in kernel feature) will speed-up execution of eBPF
aware tools.
eBPF JIT is controlled by the file /proc/sys/net/core/bpf_jit_enable.
More details for eBPF JIT -
https://www.ker
This request is for the 16.04 and 18.04 kernels.
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Title:
Enable eBPF JIT in the linux-azure kernels
Status in linux-azure pac
Public bug reported:
In testing with the “Canonical UbuntuServer 19.04 latest” image from the
Azure Marketplace, we’re seeing these lines output in dmesg:
lisa@LISAv2-OneVM8NIC-v-stlups-AQ63-20190507075423-role-0:~$ dmesg | grep GPT
[ 17.228278] GPT:Primary header thinks Alt. header is not at t
** Patch added:
"0002-Expose-extended-attributes-for-user-IB-verbs-QUERY_D.patch"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1839673/+attachment/5281841/+files/0002-Expose-extended-attributes-for-user-IB-verbs-QUERY_D.patch
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** Patch added:
"0001-Don-t-wait-in-hvnd_query_gid-after-interface-is-alre.patch"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1839673/+attachment/5281840/+files/0001-Don-t-wait-in-hvnd_query_gid-after-interface-is-alre.patch
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Public bug reported:
The following two patches are critical for unblocking kernel sign-off
for the 5.0 kernel in Ubuntu 18.04:
("Don't wait in hvnd_query_gid after interface is already bound to ND")
("Expose extended attributes for user IB verbs QUERY_DEVICE, CREATE_CQ and
CREATE_QP")
The patch
** Description changed:
The following two patches are critical for unblocking kernel sign-off
for the 5.0 kernel in Ubuntu 18.04:
("Don't wait in hvnd_query_gid after interface is already bound to ND")
("Expose extended attributes for user IB verbs QUERY_DEVICE, CREATE_CQ and
CREATE_QP
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 updates.
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”)
The
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 e
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
li
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 prop
** 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:
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 oc
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 of
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 we
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 o
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 d
I see the fix is already included in Focal, from a different commit.
This bug can be closed.
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Title:
Make sched clock return n
For reference, the other commit that fixed this is:
e4a58cdd069e6 ("clocksource/drivers/hyper-v: Untangle stimers and timesync from
clocksources")
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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
Additional conversations for the bug are happening in bug 1874544
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Title:
[linux-azure] Request to autoload mlx4/mlx5 modules
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
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 l
** Also affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
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Title:
High rate of packet loss upgrading t
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 testing
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 comm
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
buil
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:
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 own
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. Ad
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 Dpkg::Options::=
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 BLK_STS_
Public bug reported:
There is a regression with the 5.0 based kernel. The following is the
good and bad kernels:
OS Status Kernel veriosn
18.04.201906170 BAD Linux nt100 5.0.0-1014-azure
18.04.201906040 GOOD Linux nt100 4.18.0-1020-azure
The crash can be
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 ho
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
** 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 co
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 repro
** 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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** 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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** 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: "dmesg"
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1853014/+attachment/5306229/+files/dmesg
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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 > /sys/bus/pci/devices/c09d:00:00.0/
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
libibverbs:
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:
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 allocate
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 "scsi_change_queue_
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 me
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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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 smb2_push_mandatory
** Information type changed from Private Security to Public Security
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https://bugs.launchpad.net/bugs/1834364
Title:
[linux-azure] Potential Hyper-V infoleak in NVMe
Public bug reported:
We would like to request the following two commits in the 16.04 and
18.04 linux-azure kernels:
f3587d76da05 ("block: Clear kernel memory before copying to user")
f55adad601c6 ("block/bio: Do not zero user pages")
These commits are in mainline as of v4.20 and have been cc'd
Public bug reported:
A panic was observed during file system testing. The trace is the
following:
[ 8783.243586] kernel BUG at
/build/linux-azure-3iFJ9j/linux-azure-4.18.0/fs/ext4/resize.c:266!
[ 8783.252751] invalid opcode: [#1] SMP PTI
[ 8783.256735] CPU: 7 PID: 39476 Comm: resize2fs Not
** Changed in: linux (Ubuntu Xenial)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
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Thanks for testing!
I built a Xenial test kernel with a pick of mainline commit 7d06d5895c.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1759821
Can you test this kernel and see if it resolves this bug?
Note, to test this kernel, you need to install both the li
Commit 3b95206110a is now in the Artful -proposed kernel, 4.13.0-38.
Would it be possible for you to test the proposed kernel and post back if it
resolves this bug?
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.
Thank you in advance!
** C
Commit 3b95206110a was never applied to the upstream stable 4.4.y
updates, so I'll submit an SRU request for Xenial.
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https://bugs.launchpad.net/bugs/1720219
Title:
Repeate
** Changed in: linux (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1720219
Title:
Repeated keys stop after a few characters (^@ chara
@Sergey, are you seeing this bug with the Xenial HWE kernel or the stock
4.4 kernel? Are there others seeing this bug on Xenial? I don't see
that the patch was accepted in upstream stable 4.4, so I'm curious if it
is still needed in Xenial.
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