Since this course bisect shows the issue can be reproduced with a
mainline kernel I guess I can do the bisect myself and let you known the
result.
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Ran check on the mainline kernel builds:
v5.3.18 crashes
v5.2.21 crashes
v5.1.21 crashes
v5.0.21 crashes
v4.20.17 OK
so the regression occurs between 4.20 and 5.0
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Still breaks on 6.13.0-rc1
cking@plucky-amd64:~$ sudo ./stress-ng/stress-ng --hdd 8 --temp-path=/mnt -v
--verify --klog-check -t 20
stress-ng: debug: [13576] invoked with './stress-ng/stress-ng --hdd 8
--temp-path=/mnt -v --verify --klog-check -t 20' by user 0 'root'
stress-ng: debug: [13576] st
Afraid so.
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Title:
hfsplus truncation can crash/hang 5.19 kernels
Status in linux package in Ubuntu:
Incomplete
Status in linux s
Re-uploaded to -proposed to fix following:
Rejected:
Rejected by Chris Halse Rogers: .changes file does not contain
Launchpad-Bugs-Fixed: metadata, necessary for SRU tracking. Was this source
package built on Debian?
** Changed in: thermald (Ubuntu)
Status: New => In Progress
** Changed
Patch looks good, applied and uploaded to -proposed.
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Title:
[SRU] patch thermald in noble to support Intel Lunar Lake and Arrow
Reverting 0a46ef234756dca04623b7591e8ebb3440622f0b on Linux 6.10.10
allows the test to run to completion w/o any lockups.
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Title:
or
$ git bisect bad
0a46ef234756dca04623b7591e8ebb3440622f0b is the first bad commit
commit 0a46ef234756dca04623b7591e8ebb3440622f0b (HEAD)
Author: Jan Kara
Date: Thu Mar 21 17:26:50 2024 +0100
ext4: do not create EA inode under buffer lock
ext4_xattr_set_entry() creates new EA inodes
** Description changed:
How to reproduce this issue:
Kernel: 6.11.0-7, AMD64 virtual machine, oracular, updated 16th Sept
2024 @ 14:15 UK TZ
8 thread virtual machine (important, must be multiple CPU threads to trigger
the regression)
20GB virtio drive on /dev/vdb, 1 partition /dev
Seems to occur on 6.10 too.
** Bug watch added: Linux Kernel Bug Tracker #219283
https://bugzilla.kernel.org/show_bug.cgi?id=219283
** Also affects: linux via
https://bugzilla.kernel.org/show_bug.cgi?id=219283
Importance: Unknown
Status: Unknown
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Public bug reported:
How to reproduce this issue:
Kernel: 6.11.0-7, AMD64 virtual machine, oracular, updated 16th Sept
2024 @ 14:15 UK TZ
8 thread virtual machine (important, must be multiple CPU threads to trigger
the regression)
20GB virtio drive on /dev/vdb, 1 partition /dev/vdb1
sudo mkfs.
The dev test could randomly hit the kernel bug due to the chaotic racy
access of devices by this stressor. One could try and use --no-rand-seed
to use the same base random seed for more repeatable testing.
The dev stressor does report the device being accessed in argv[], this
can be observed when
Also able to crash current Oracular amd64 generic kernel with stress-ng
apparmor stressor, see attached image
** Attachment added: "image of oracular crash"
https://bugs.launchpad.net/ubuntu-realtime/+bug/2068602/+attachment/5810324/+files/Screenshot%20from%202024-08-29%2010-27-09.png
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** Summary changed:
- weird file system free block state after creating files and removing them
with a mix of i/o operations
+ hfs: weird file system free block state after creating files and removing
them with a mix of i/o operations
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** Bug watch added: Linux Kernel Bug Tracker #218571
https://bugzilla.kernel.org/show_bug.cgi?id=218571
** Also affects: linux via
https://bugzilla.kernel.org/show_bug.cgi?id=218571
Importance: Unknown
Status: Unknown
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Public bug reported:
Summary:
create hfs file system, loop-back mount it, run filename stressor with
stress-ng to exercise filename create/stat/unlink and we get unexpected -EEXIST
errors.
This can be worked around by adding a sync() call after the unlink() to ensure
metadata is sync'd.
Kerne
Public bug reported:
Summary:
create hfs file system, loop-back mount it, run iomix stessor with
stress-ng to exercise with a mix of file I/O operations and remove files
at end. File system is empty but a lot of blocks are used and can't seem
to be recovered.
Kernel: 6.8.0-11-generic
test case:
** Attachment added: "screen shot of my noble VM on a noble server"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2055310/+attachment/5751725/+files/Screenshot%20from%202024-03-02%2022-57-52.png
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Does not occur on pre-noble VMs, e.g. fine with mantic through to trusty
on all my VMs on the same host.
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Title:
dmesg spammed by vi
Good idea,
I've installed this on my host and it's still occurring on various VM
architectures (x86-64, ppc64el, s390x, ect). My host is noble and up to
date with updates.
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h
cking@noble-amd64:~$ uname -a
Linux noble-amd64 6.8.0-11-generic #11-Ubuntu SMP PREEMPT_DYNAMIC Wed Feb 14
00:29:05 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
[9.551968] virtio-fs: tag not found
[9.555352] 9pnet_virtio: no channels available for device config
[ 14.850014] virtio-fs: tag
Public bug reported:
Ubuntu noble, as of 28 Feb 2024, on amd64, s390x, ppc64, seeing kernel
messages after boot (running instances in a VM using virt-manager)
uname -a
Linux noble-amd64-efi 6.6.0-14-generic #14-Ubuntu SMP PREEMPT_DYNAMIC Thu Nov
30 10:27:29 UTC 2023 x86_64 x86_64 x86_64 GNU/Linu
** Changed in: zfs-linux (Ubuntu)
Assignee: Colin Ian King (colin-king) => (unassigned)
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Title:
OpenZFS writing sta
Looks like Michael Larabel has done some analysis for you already :-)
https://www.phoronix.com/news/Ubuntu-Generic-LL-Kernel
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https://bugs.launchpad.net/bugs/2051342
Title:
@Andrea, that's a good start, but it may be worth running some of the
Phoronix Tests too as they are a good spread of use cases.
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Titl
It may be worth trying a wider range of synthetic benchmarks to see how
it affects scheduling, I/O, RCU and power consumption.
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Title:
Thanks team Canonical for this \o/
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Title:
Upgrade thermald to 2.5.1 for Jammy (22.04)
Status in OEM Priority Project:
Fix Rel
** Summary changed:
- Processor turbo dsiabled/throttled after suspend
+ Processor turbo disabled/throttled after suspend
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Title:
This bug report has not seen any further follow-up for 2+ years. Closing
it. If it is still not fixed please re-open this issue.
** Changed in: thermald (Ubuntu)
Status: Incomplete => Fix Released
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Public bug reported:
creating a file on tmpfs with open(filename, O_RDWR | O_DIRECT |
O_CREAT, 0666) reports an open failure error EINVAL, but still creates
the file. The file should not be created if we hit such an error.
Tested and fails on:
mantic amd64: 6.5.0-10-generic
lunar amd64: 6.2.0-35-
Unable to collect data via apport-collect due to VPN restrictions.
** Changed in: linux (Ubuntu Mantic)
Status: Incomplete => Confirmed
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** Changed in: linux (Ubuntu Mantic)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/2038768
Title:
arm64: linux: stress-ng filename stressor crashes kern
Did an hour of soak testing with arm64 kernel
https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.5.6/arm64/linux-image-
unsigned-6.5.6-060506-generic_6.5.6-060506.202310061235_arm64.deb and
cannot reproduce this issue.
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And can reproduce on real H/W on a 24 core "SC2A11" is a multi-core chip
with 24 cores of ARM® Cortex-A53. with Linux 6.5.0-7-generic #7-Ubuntu
SMP PREEMPT_DYNAMIC Thu Sep 28 19:12:05 UTC 2023 aarch64 aarch64 aarch64
GNU/Linux
[ 201.075720] EXT4-fs (loop13): mounted filesystem
52e32882-8b3a-47c
Reproduced this with mainline arm64 kernel
https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.5.5/arm64/linux-image-
unsigned-6.5.5-060505-generic_6.5.5-060505.202309230703_arm64.deb
[ 219.219042] Internal error: Oops - BUG: f2000800 [#1] SMP
[ 219.262013] Modules linked in: cfg80211 binf
Reproduced this with mainline arm64 kernel
https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.5/arm64/linux-image-
unsigned-6.5.0-060500-generic_6.5.0-060500.202308271831_arm64.deb
[ 184.853731] pstate: 4045 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 184.862627] pc : d_instantiate_new+0
Can't reproduce this with mainline arm64 kernel
https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.5.6/arm64/linux-image-
unsigned-6.5.6-060506-generic_6.5.6-060506.202310061235_arm64.deb
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Can't seem to trip the issue on a 24 core x86 instance, maybe this is
ARM64 specific.
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Title:
arm64: linux: stress-ng filename stres
** Also affects: linux (Ubuntu Mantic)
Importance: High
Status: Incomplete
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Title:
arm64: linux: stress-ng filename stress
I created a 1GB file and created a fresh ext4 file system on it and loop
back mounted it on /mnt, I created test directory /mnt/test and ran:
/stress-ng --filename 0 --temp-path /mnt/test --klog-check
Managed to trip the kernel crash again. So it appears to occur on a fresh ext4
file system too
Public bug reported:
Running latest Ubuntu mantic (ext4 file system) with kernel: Linux
mantic-arm64 6.5.0-7-generic #7-Ubuntu SMP PREEMPT_DYNAMIC Thu Sep 28
19:12:05 UTC 2023 aarch64 aarch64 aarch64 GNU/Linux
How to reproduce:
Fire up a 24 instance ARM64 QEMU instance with Ubuntu Mantic Server.
Note that just running stress-ng with --filename 0 will reproduce the
issue. I'm testing this now on a cleanly formatted ext4 file system
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It may be worth trying this on real H/W to factor our the QEMU
component.
** Description changed:
When running the stress-ng vector floating point stressor in QEMU PPC64
virtual machines I get floating point verification errors when running
more stressor instances than the number of virtual
*** This bug is a security vulnerability ***
Private security bug reported:
When running the stress-ng vector floating point stressor in QEMU PPC64
virtual machines I get floating point verification errors when running
more stressor instances than the number of virtual CPUs.
How to reproduce:
C
Note that this could be triggered with stress-ng --apparmor 0; see
https://bugs.launchpad.net/ubuntu/mantic/+source/linux/+bug/2024599
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Thanks JJ, much appreciated :-)
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Title:
linux-image-5.15.0-1032-realtime locks up under scheduler test load
Status in apparmor pack
And also occurs in Ubuntu Mantic with 6.3.0-7-generic
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Title:
linux-image-5.15.0-1032-realtime locks up under scheduler test load
S
5.15.0.75 works fine, no problem, 5.19.0-45 kernel crashes, so issue
introduced between 5.15 and 5.19
** Also affects: apparmor (Ubuntu Lunar)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Lunar)
Importance: Undecided
Status: New
** Also affects: apparmor (
And with 5.19.0-45-generic:
sudo ./stress-ng --apparmor 1 --klog-check
[sudo] password for cking:
stress-ng: info: [1179] defaulting to a 86400 second (1 day, 0.00 secs) run
per stressor
stress-ng: info: [1179] dispatching hogs: 1 apparmor
stress-ng: info: [1180] klog-check: kernel cmdline:
On 6.2.0-21-generic I also get:
sudo ./stress-ng --apparmor 1 --klog-check
stress-ng: error: [1083] klog-check: alert: [66.442338] 'BUG: kernel NULL
pointer dereference, address: 0030'
stress-ng: error: [1083] klog-check: alert: [66.442538] '#PF: supervisor read
access in kernel mod
I've managed to capture where it hangs, looks like a RCU issue, see
attached screen shot.
** Attachment added: "Screenshot from 2023-06-23 12-28-42.png"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2024599/+attachment/5681654/+files/Screenshot%20from%202023-06-23%2012-28-42.png
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I'm working through the stressors to see which ones are possibly causing
issues. I did notice that the apparmor stressor eats up memory until the
system runs out of memory. This stressor loads illegal apparmor profiles
and then removes them. Perhaps there is a memory leak in the loading of
profiles
Public bug reported:
lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:Ubuntu 22.04.2 LTS
Release:22.04
Codename: jammy
uname -a
Linux jammie-amd64-efi 5.15.0-1032-realtime #35-Ubuntu SMP PREEMPT_RT Tue Jan
24 11:45:03 UTC 2023 x86_64
x86_64 x86_64
** Changed in: stress-ng
Status: New => Won't Fix
** Changed in: stress-ng
Status: Won't Fix => Invalid
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Title:
unsha
** Changed in: stress-ng
Status: New => Fix Released
** Changed in: stress-ng
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: stress-ng
Importance: Undecided => Medium
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** Changed in: stress-ng
Status: In Progress => Fix Released
** Changed in: stress-ng
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: stress-ng
Importance: Undecided => Medium
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** Changed in: stress-ng
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1968361
Title:
rawsock test BUG: soft lockup
Status in Linux:
Fix
** Changed in: thermald (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/2012260
Title:
Add support for Adler Lake N
Status in thermald pack
@koba, can you test the focal version too?
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https://bugs.launchpad.net/bugs/2009676
Title:
Add support for Raptor Lake S CPUs
Status in OEM Priority Project:
New
Stat
I believe it's useful to have RPL focal support in thermald if users use
newer HWE kernels. Plus the change is basically adding in some CPU id's
so it's a small delta for useful potential support.
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I've applied the patch for Jammy and uploaded a new version ready for
SRU.
thermald (2.4.9-1ubuntu0.2) jammy; urgency=medium
* Add support for Raptor Lake S CPUs. (LP: #2009676)
Date: Wed, 8 Mar 2023 11:28:31 +
Changed-By: Colin Ian King
Maintainer: Ubuntu Developers
Also there is a re-forking delay added to allow instances to fire up and
back off if resources get low. These changes have been tested with 256,
1024, 4096 and 8192 instances on a 24 thread system with 32GB of memory.
** Changed in: linux (Ubuntu)
Status: New => Invalid
** Changed in: linu
This fix will land in the next release of stress-ng at the end of March
2023
** Changed in: stress-ng
Status: New => Fix Committed
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Added an ENOBUFS check on the sender with priority dropping on ENOBUFS
errors and also a timer backoff delay. Added OOM killer respawning that
can be overridden using the --oomable to allow overcommitted systems to
ether respawn OOM'd rawsock instances (default) or not respawn
(--oomable).
Fix co
** Changed in: stress-ng (Ubuntu)
Status: In Progress => Fix Released
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Title:
disk stress test failing with code 7
Status in
@koba, if you have access to a Dell XPS 9320 then that would be super
useful to verify too - thanks!
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Title:
Raptor Lake Thermald
Looks like the kernel is running out of resources and it is doing Out-
of-memory killing of various processes. I think I have ways of reducing
this from occurring.
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I've been exercising the existing code paths of thermald for several
days now with no observable regression in behaviour. I cannot test the
new code path change for this fix as I don't have the exact same system
as that reported in the bug.
For what I can see, there is no regression on this single
** Changed in: thermald (Ubuntu Jammy)
Status: Won't Fix => In Progress
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Title:
Raptor Lake Thermald ITMT version 2 suppor
Jammy does not support ITMT. I won't backport the ITMT support and fix
for Jammy unless it is deemed necessary, and then that will under a new
bug as the backport is quite a bit more work.
** Description changed:
- Raptor Lake system uses ITMT v2 instead of V1 for thermal configuration via
GDDV.
** Changed in: thermald (Ubuntu Bionic)
Status: In Progress => Won't Fix
** Changed in: thermald (Ubuntu Focal)
Status: In Progress => Won't Fix
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: New
** Also affects: thermald (Ubuntu Lunar)
Importance: High
Assignee: Colin Ian King (colin-king)
Status: In Progress
** Changed in: thermald (Ubuntu Lunar)
Status: In Progress => Fix Released
** Changed in: thermald (Ubuntu Kinetic)
Assignee: (unassigned) => Col
I don't mind picking this one up.
** Changed in: thermald (Ubuntu)
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: thermald (Ubuntu)
Importance: Undecided => High
** Changed in: thermald (Ubuntu)
Status: New => In Progress
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the updated stress-ng is available from the stress-ng ppa:
https://launchpad.net/~colin-king/+archive/ubuntu/stress-ng/
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Title:
disk
stress-ng V0.15.04 has been released with a fix for this issue.
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Title:
disk stress test failing with code 7
Status in Stress-ng:
ommit efb0ad344e735986b29e0e1d68454edf9d793ee4 (HEAD -> master)
Author: Colin Ian King
Date: Fri Feb 3 17:36:09 2023 +
stress-lock{a|f|ofd}: terminate contention process with SIGALRM
This will be included in the next stress-ng release at the end of this month.
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buntu/stress-ng for the latest
version for older releases.
** Changed in: stress-ng (Ubuntu)
Importance: Undecided => High
** Changed in: stress-ng (Ubuntu)
Assignee: Ike Panhc (ikepanhc) => Colin Ian King (colin-king)
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I suspect it was fixed with:
commit b292cafe2dd02d96a07147e4b160927e8399d5cc
Author: Felix Kuehling
Date: Wed Sep 21 17:45:59 2022 -0400
drm/amdkfd: Fix UBSAN shift-out-of-bounds warning
This was fixed in initialize_cpsch before, but not in initialize_nocpsch.
Factor sdma bitmap i
It may be worth using stress-ng from https://launchpad.net/~colin-
king/+archive/ubuntu/stress-ng or building it from source using:
git clone https://github.com/ColinIanKing/stress-ng
cd stress-ng
git checkout V0.15.00
make clean
make
and then running:
./stress-ng --lockofd 0 -t 300 --vmstat 1
e Aug 2022:
commit 6274835de403ec310b20d2771ccf21a523b94cec
Author: Colin Ian King
Date: Tue Nov 15 19:57:28 2022 +
stress-*: rename stress_not_implemented to stress_unimplemented
Signed-off-by: Colin Ian King
commit 7ccc5fe9d18b7d467e8279c0a791df6453e5a451
Author: Colin Ian
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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Fix committed to stress-ng: https://github.com/ColinIanKing/stress-
ng/commit/79b54d692ea8e422efa5dee72c7c397d18b237db
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https://bugs.launchpad.net/bugs/1961076
Title:
I'll add a OOM check wrapper around this stressor so it can detect
OOM'ing and do a sane error handling condition.
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Title:
l
** Bug watch added: Linux Kernel Bug Tracker #216626
https://bugzilla.kernel.org/show_bug.cgi?id=216626
** Also affects: linux via
https://bugzilla.kernel.org/show_bug.cgi?id=216626
Importance: Unknown
Status: Unknown
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occurs on 6.0 i386 kernels too
** Changed in: linux (Ubuntu)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/1994079
Title:
fallocate on 32 bit boundary
Public bug reported:
This is a corner case on 32 bit systems when using large file offsets,
fallocate and setrlimit.
Setting the RLIMIT_FSIZE with setrlimit to 0x and then
fallocating 1 or more bytes at the offset of 0x should make the
fallocate fail with EFBIG and generate a SIGX
Which file system is that running the test on?
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https://bugs.launchpad.net/bugs/1992641
Title:
stress ng seal regression on K-riscv 5.19-1003
Status in ubuntu-kernel
Occurs also on Focal 5.4.0-126-generic. I recommend running with at
least 8-16 stess-ng --hdd stressor instances to trigger the crash
quickly.
** Changed in: linux (Ubuntu)
Milestone: None => jammy-updates
** Also affects: linux (Ubuntu Kinetic)
Importance: High
Status: Incomplet
Issue occurs on a Jammy 5.15.0-48 kernel, so this is not a regression
for the 5.19 kernel, but occurred earlier.
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https://bugs.launchpad.net/bugs/1992298
Title:
hfsplus tru
Seems OK on Xenial 4.4 and Bionic 4.19 kernels, no crashing there.
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https://bugs.launchpad.net/bugs/1992298
Title:
hfsplus truncation can crash/hang 5.19 kernels
Status in
Public bug reported:
uname -a
Linux kinetic-amd64-efi 5.19.0-19-generic #19-Ubuntu SMP PREEMPT_DYNAMIC Tue
Sep 27 16:03:25 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
How to reproduce:
git clone https://github.com/ColinIanKing/stress-ng
cd stress-ng
make clean
make -j 8
cd
pwd
/home/cking
dd if
** Changed in: linux (Ubuntu)
Assignee: Colin Ian King (colin-king) => (unassigned)
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https://bugs.launchpad.net/bugs/988799
Title:
Precise freezes under heavy
** Changed in: linux-riscv (Ubuntu)
Status: Expired => Incomplete
** Changed in: linux-riscv (Ubuntu)
Importance: Undecided => Low
** Changed in: linux-riscv (Ubuntu)
Assignee: (unassigned) => Dimitri John Ledkov (xnox)
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Work-aound committed to stress-ng:
commit 69328da97f04745a9da2890c90c131c2322f81e2 (HEAD -> master)
Author: Colin Ian King
Date: Wed Apr 27 08:49:12 2022 +
stress-rawsock: make client wait for server to start
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** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: stress-ng
Importance: Undecided => Low
** Changed in: stress-ng
Assignee: (unassigned) => Colin Ian King (colin-king)
**
See: https://lists.ubuntu.com/archives/kernel-
team/2022-March/128871.html
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https://bugs.launchpad.net/bugs/1966089
Title:
Update OS policy capability handshake
Status in
This fix was requested by the thermald developer Srinivas Pandruvada to
support the new version of thermald.
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https://bugs.launchpad.net/bugs/1966089
Title:
Update OS polic
Public bug reported:
== SRU JAMMY ==
Update int340x OS policy capability handshake; required for full
functionality in thermald 2.4.9 to improve functionality for newer H/W.
== The fix ==
Upstream commit:
commit c7ff29763989bd09c433f73fae3c1e1c15d9cda4
Author: Srinivas Pandruvada
Date: Mon
Looks like a kernel bug and not a stress-ng issue to me.
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https://bugs.launchpad.net/bugs/1962551
Title:
unshare test in ubuntu_stress_smoke_tests cause "BUG: unab
If it's written in C I thoroughly recommend it is put through static
analysis and -Wall -Wextra warnings to ensure this key component is
sane.
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