** Summary changed:
- ice: Remove ndo_get_phys_port_name
+ Fix NIC name changes for ice
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Title:
Fix NIC name changes for ice
Statu
e the "phys_port_name" is never actually used, it's find to remove
it.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Affects: linux (Ubuntu Noble)
Importance: Undecided
Assignee: ge
Thanks David for the feedback on the test kernel and the awesome blog
post!
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Title:
workqueue: inode_switch_wbs_work_fn hogg
I suspect the issue is caused by this commit:
commit c22d70a162d3cc177282c4487be4d54876ca55c8
Author: Roman Gushchin
Date: Mon Jun 28 19:36:03 2021 -0700
writeback, cgroup: release dying cgwbs by switching attached inodes
It introduces a kworker "cleanup_offline_cgwbs_work", which lever
It looks the above mentioned kernels linux-hwe-6.8/6.8.0-51.52~22.04.1
and linux-hwe-6.11/6.11.0-13.14~24.04.1 are still not in -proposed yet
Jammy:
ubuntu@jammy-c:~$ sudo apt update
Hit:1 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:2 http://archive.ubuntu.com
The fips kernel containing the fix has been released to fips-updates:
5.4.0-1104 fips kernel has been released to fips-updates:
apt policy linux-image-5.4.0-1104-fips
linux-image-5.4.0-1104-fips:
Installed: 5.4.0-1104.114
Candidate: 5.4.0-1104.114
Version table:
*** 5.4.0-1104.114 1001
5.4.0-1104 fips kernel has been released to fips-updates:
apt policy linux-image-5.4.0-1104-fips
linux-image-5.4.0-1104-fips:
Installed: 5.4.0-1104.114
Candidate: 5.4.0-1104.114
Version table:
*** 5.4.0-1104.114 1001
1001 https://esm.ubuntu.com/fips-updates/ubuntu focal-updates/main
This patch has been verified on PS6 for few weeks
** Tags removed: verification-needed-jammy-linux verification-needed-noble-linux
** Tags added: verification-done-jammy-linux verification-done-noble-linux
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** Changed in: linux-hwe-6.8 (Ubuntu Jammy)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
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Title:
net/sc
** Tags removed: verification-needed-jammy-linux-hwe-6.8
** Tags added: verification-done-jammy-linux-hwe-6.8
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Title:
net/sc
Verified on 5.4.0-1104 fips kernel on AMD EPYC 7262 machine and confirmed it
fixes the issue.
With 5.4.0-1104 fips kernel, it can boot successfully:
ubuntu@focal:~$ sudo dmesg | grep DRBG
[4.121726] random: random: DRBG (drbg_nopr_ctr_aes256) initialized!
ubuntu@focal:~$ uname -a
Linux focal
** Also affects: linux-lowlatency (Ubuntu Lunar)
Importance: Undecided
Status: New
** Also affects: linux-lowlatency (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux-lowlatency (Ubuntu Jammy)
Assignee: (unassigned) => gerald.yang (gerald-yang
Thanks Jay for pointing this out!
I just read the man page of vdso, it says gettimeofday is not a real system
call and just read the shared memory exports by kernel.
It shouldn't be used to measure the user-kernel context switch overhead caused
by NO_HZ_FULL.
>From what the tests does, I think
Some observations from test results between NO_HZ_FULL built-in but not enable
and default kernel
Tests are from LTP scheduling related under "realtime" category
And there is "no" taskset when running the tests
- Gettimeofday latency (ns basis)
For no_hz_full built-in:
The average is almost the
Another note is that NO_HZ_FULL is already built-in on 6.5 "lowlatency" kernel:
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/2023007
But currently it's only available on Mantic, I think we should also
consider if it's more proper for lowlatency kernel instead of generic
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You
The attached is ltp test results with NO_HZ_FULL built-in and activate in
kernel cmdline, e.g.
isolcpus=2-15,18-31 nohz_full=2-15,18-31 rcu_nocbs=2-15,18-31
but tests were run on non-activate CPU 16
** Attachment added: "nohz-log-noisolcpu.tgz"
https://bugs.launchpad.net/ubuntu/+source/linux
The attached is ltp test results with NO_HZ_FULL built-in and activate on
kernel cmdline, e.g.
isolcpus=2-15,18-31 nohz_full=2-15,18-31 rcu_nocbs=2-15,18-31
tests were run on cpu 4
** Attachment added: "nohz-log-isolcpu.tgz"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1919154/+atta
The attached is ltp test results with NO_HZ_FULL built-in but not
actiavte
** Attachment added: "nohz-log.tgz"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1919154/+attachment/5713512/+files/nohz-log.tgz
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The attached is ltp test results with default ubuntu kernel
** Attachment added: "log.tgz"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1919154/+attachment/5713511/+files/log.tgz
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The above tests is based on getpid() system call, which doesn't have
much workload except context switch, so we evaluate the additional
overhead caused by NO_HZ_FULL built-in on AMD EPYC machine
I also used LTP to run scheduler related tests, will attach the test
data later
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on 6.2 kernel
With NO_HZ_FULL built-in, the context switch performance is ~4% worse
than default config
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Title:
Enable CONFIG_NO_HZ
Run some tests with Jammy hwe kernel (6.2.0) on AMD EPYC 7252
Test case 1, without NO_HZ_FULL built-in (default ubuntu kernel config):
Run test program 4 times without taskset
tail -n 2 log/notaskset.*
==> log/notaskset.1 <==
total 23703299350 nsec
avg 237 nsec
==> log/notaskset.2 <==
total 23738
Spend some time to get access to AMD EPYC machine
For 5.15 kernel
If we build NO_HZ_FULL into kernel and compare with default kernel (NO_HZ_IDLE)
- on Intel machine, there is no much different
- on Arm64 machine, interestingly, the context switch is a bit faster with
NO_HZ_FULL built-in
- on AMD
On AMD EPYC 7252
Hardware configs:
AMD64
32 CPUs
128G RAM, numa nodes: 2
Software configs:
OS: ubuntu 20.04
Official kernel: 5.15 hwe (5.15.0-86.96~20.04.1)
Test kernel: 5.15 hwe (5.15.0-86.96~20.04.1+test20231013b0)
https://launchpad.net/~gerald-yang-tw/+archive/ubuntu/focal-no-hz-full
Test cas
On arm64 machine
Hardware configs:
Aarch64
128 CPUs
502G RAM, numa nodes: 4
Software configs:
OS: ubuntu 20.04
Official kernel: 5.15 hwe (5.15.0-86.96~20.04.1)
Test kernel: 5.15 hwe (5.15.0-86.96~20.04.1+test20231013b0)
https://launchpad.net/~gerald-yang-tw/+archive/ubuntu/focal-no-hz-full
Test
Results on Intel machine
Hardware configs:
Dell PowerEdge R730xd
Intel(R) Xeon(R) CPU E5-2650 v3 @ 2.30GHz
40 CPUs
188G RAM, numa nodes: 2
Software configs:
OS: ubuntu 20.04
Official kernel: 5.15 hwe (5.15.0-86.96~20.04.1)
Test kernel: 5.15 hwe (5.15.0-86.96~20.04.1+test20231013b0)
https://launch
The attached test code is borrowed from Jay, it measures the average
time for running getpid() 1 times to see if NO_HZ_FULL will
cause any performance degradation for context switch when it’s built
into kernel
There are 4 test scopes:
1. Without NO_HZ_FULL built-in
the default value of NO_
Test program from Jay
** Attachment added: "syscall-time.c"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1919154/+attachment/5710594/+files/syscall-time.c
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https:
jammy hwe kernel (6.2) with NO_HZ_FULL:
https://launchpad.net/~gerald-yang-tw/+archive/ubuntu/no-hz-full-6.2
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Title:
Enable CONFIG_N
Since we have some customers need NO_HZ_FULL, I'd like to provide some
updates and progress:
I've borrowed some machines including intel, AMD EPYC, arm64 servers
and now running some tests on a test kernel with
1. CONFIG_NO_HZ_FULL=y
2. not enable nohz_full in kernel cmdline
to evaluate if there
** Changed in: linux (Ubuntu Jammy)
Status: New => In Progress
** Changed in: linux (Ubuntu Lunar)
Status: New => In Progress
** Changed in: linux (Ubuntu Jammy)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Changed in: linux (Ubuntu Lunar)
Assignee: (u
** Description changed:
[ Impact ]
When running fio on a NVME on an AWS test instance with 5.19 kernel, IOs
get stuck and fio never ends
fio command:
sudo fio --name=read_iops_test --filename=/dev/nvme1n1 --filesize=50G
--time_based --ramp_time=2s --runtime=1m --ioengine=lib
** Tags added: sts sts-sru-needed
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Title:
[SRU] IO gets stuck on 5.19 kernel
Status in linux package in Ubuntu:
In Progress
Statu
** Description changed:
[ Impact ]
When running fio on a NVME on an AWS test instance with 5.19 kernel, IOs
get stuck and fio never ends
fio command:
sudo fio --name=read_iops_test --filename=/dev/nvme1n1 --filesize=50G
--time_based --ramp_time=2s --runtime=1m --ioengine=lib
** Changed in: linux (Ubuntu Kinetic)
Status: New => In Progress
** Changed in: linux (Ubuntu Kinetic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Kinetic)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Description changed:
[ Impact ]
** Description changed:
[ Impact ]
When running fio on a NVME on an AWS test instance with 5.19 kernel, IOs
get stuck and fio never ends
fio command:
sudo fio --name=read_iops_test --filename=/dev/nvme1n1 --filesize=50G
--time_based --ramp_time=2s --runtime=1m --ioengine=lib
inly used in blk-mq in block layer, scsi drivers and fungible
ethernet driver
If there is any issue happens in sbitmap, the symptom should be IO hung, or
packets get stuck in fungible driver
** Affects: linux (Ubuntu)
Importance: High
Assignee: gerald.yang (gerald-yang-tw)
Sta
This has been verified on 5.4.0-135.152 generic kernel and also released to
focal-updates
see comment #28
Set to verification done
** Tags removed: verification-needed-focal
** Tags added: verification-done-focal
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I've tested linux-azure/5.15.0-1030.37 in jammy-proposed and confirmed
it has fixed the issue
gerald@myvm-j1:~$ uname -a
Linux myvm-j1 5.15.0-1030-azure #37-Ubuntu SMP Mon Dec 12 19:17:45 UTC 2022
aarch64 aarch64 aarch64 GNU/Linux
all VFs can be detected and VM boot successfully
** Tags re
Hi Tim,
I've tested kinetic azure kernel and it works perfectly
but when I check jammy azure kernel, this patch seems not in the git tree
has it been merged to the jammy azure kernel too?
Thanks,
Gerald
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I've tested linux-azure/5.19.0-1014.15 in kinetic-proposed and confirmed it
fixes the issue
uname -a
Linux myvm-k 5.19.0-1014-azure #15-Ubuntu SMP Mon Nov 28 19:54:09 UTC 2022
aarch64 aarch64 aarch64 GNU/Linux
steps:
create an ARM64 VM on azure
create 8 VFs and attach to the VM
with 5.19.0-1014-
** Changed in: linux (Ubuntu)
Status: In Progress => Invalid
** Changed in: linux (Ubuntu Focal)
Status: In Progress => Invalid
** Changed in: linux (Ubuntu Jammy)
Status: In Progress => Invalid
** Changed in: linux (Ubuntu Kinetic)
Status: In Progress => Invalid
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lems could occur]
The patch is to use the correct type for the variables and reviewed by upstream
There shouldn't be any problem
** Affects: linux (Ubuntu)
Importance: High
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Affects: linux (Ubuntu Focal)
I
Add one more case caused by this issue:
When SEV is enabled on the host, the guest also enables SEV and running 5.15
kernel
with this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e998879d4fb7991856916972168cf27c0d86ed12
The SWIOTLB driver in the guest cou
ource/linux/+bug/1842320
** Affects: grub2-unsigned (Ubuntu)
Importance: High
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Package changed: linux (Ubuntu) => grub2-unsigned (Ubuntu)
** Changed in: grub2-unsigned (Ubuntu)
Assignee: (unassigned) =>
This should be the minimal set of patches needed for hibernation on 5.15
aws kernel
270756abd4ee x86: Disable KASLR when Xen is detected
7fea4363d9ed xen: Restore xen-pirqs on resume from hibernation
90c68a4dc544 xen-netfront: call netif_device_attach on resume
145e43c7bcb1 xen: Only restore the A
We are hitting the hibernation issue on Jammy aws kernel (5.15), it gets
stuck when hibernating
Turn out it needs some patches from 5.15 amazonlinux to make hibernation work
https://github.com/amazonlinux/linux/tree/amazon-5.15.y/mainline
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** Changed in: linux (Ubuntu)
Status: Invalid => Fix Committed
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Title:
audit: improve audit queue handling when "audit=1" on
Thanks a lot for the help Kleber
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Title:
audit: improve audit queue handling when "audit=1" on cmdline
Status in linux package in U
the fix in Impish is still in progress here LP: #1966021
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Title:
audit: improve audit queue handling when "audit=1" on cmdline
Stat
This one has been merged in the last upstream stable patch set
** No longer affects: linux (Ubuntu Impish)
** No longer affects: linux (Ubuntu Focal)
** No longer affects: linux (Ubuntu Bionic)
** Changed in: linux (Ubuntu)
Status: In Progress => Invalid
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** No longer affects: linux (Ubuntu Jammy)
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Title:
audit: improve audit queue handling when "audit=1" on cmdline
Status in linux pa
** Also affects: linux (Ubuntu Jammy)
Importance: Critical
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Impish)
Importance: Undecided
Status
Importance: Critical
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Affects: linux (Ubuntu Bionic)
Importance: Critical
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Affects: linux (Ubuntu Focal)
Importance: Critical
Assignee: gera
s: New => In Progress
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Changed in: linux (Ubuntu Groovy)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Changed in: linux (Ubuntu Focal)
Assignee: (unassigned) => gera
** Description changed:
+ === SRU Justification ===
+ [Impact]
+ To get better performance for dm-crypt in some cases, bypass kcryptd
workqueue can reduce the overhead in context switch between workers,
cherry-pick commit 39d42fa96ba1b7d2544db3f8ed5da8fb0d5cb877 from mainline
kernel, and this i
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Changed in: linux (Ubuntu)
Status: Confirmed => In Progress
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The new kernel in xenial-proposed fixes this issue, i40evf is included in
linux-modules
kernel version: 4.4.0-171
old in xenial-update:
dpkg -L linux-modules-4.4.0-170-generic | grep 'i40e'
/lib/modules/4.4.0-170-generic/kernel/drivers/net/ethernet/intel/i40e
/lib/modules/4.4.0-170-generic/kernel
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
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** Tags added: sts
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Title:
i40e: general protection fault in i40e_config_vf_promiscuous_mode
Status in linux package in Ubuntu:
I
portance: Undecided
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Affects: linux (Ubuntu Eoan)
Importance: Undecided
Assignee: gerald.yang (gerald-yang-tw)
Status: In Progress
** Also affects: linux (Ubuntu Eoan)
Importance: Undecided
Status: New
*
** Changed in: linux (Ubuntu Eoan)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Changed in: linux (Ubuntu Disco)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
** Changed in: linux (Ubuntu Disco)
Status: New => In Progress
** Changed in: linux (Ub
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
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Title:
cloudimg: no iavf/i40evf module so no network availab
** Description changed:
- For example with bionic, i40evf module is in linux-modules-
- extra-4.15*-generic. However, cloudimg doesn't have linux-modules-extra
- seeded:
+ === SRU Justification ===
+ [Impact]
+ Intel's VF drivers such as igbvf and ixgbevf are already available in
+ generic. It mak
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => gerald.yang (gerald-yang-tw)
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Title:
cloudimg: no iavf/i40
** Also affects: livecd-rootfs (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: livecd-rootfs (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Eo
Verified linux-image-4.4.0-100-generic on AS7712, it works find,
all broadcom modules are loaded and bcm0 interface is created successfully.
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@Zygmunt
So does it mean even I add a configure hook in meta/hooks/ to copy those
binaries to boot partition (/boot/uboot/),
there is no such interface in snapd to allow this?
Thanks
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I am seeing this issue too, but in my case, it seems there is something
wrong in bbswitch-dkms, if I remove it manually by 'sudo rm
/lib/modules/4.4.0-xx-generic/updates/dkms/bbswitch.ko' I can boot into
system with both intel and nvidia mode (prime-select intel or prime-
select nvidia).
Since nvi
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