[Bug 2058278] Re: [Backport] libvirt-daemon-system won't install on Focal

2024-08-31 Thread Guilherme G. Piccoli
Thanks Bryce, just tested the new version and it's working fine.

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  [Backport] libvirt-daemon-system won't install on Focal

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[Bug 2058278] Re: [Backport] libvirt-daemon-system won't install on Focal

2024-08-21 Thread Guilherme G. Piccoli
No worries Sergio, thanks for taking a look =]

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[Bug 2058278] Re: [Backport] libvirt-daemon-system won't install on Focal

2024-08-21 Thread Guilherme G. Piccoli
Hi folks, problem is happening again, in the new update:

$ dpkg -i libvirt-daemon-
system_10.0.0-2ubuntu8.3~backport20.04.202408022321~ubuntu20.04.1_amd64.deb

Selecting previously unselected package libvirt-daemon-system.
(Reading database ... 378955 files and directories currently installed.)
Preparing to unpack 
libvirt-daemon-system_10.0.0-2ubuntu8.3~backport20.04.202408022321~ubuntu20.04.1_amd64.deb
 ...
Unpacking libvirt-daemon-system 
(10.0.0-2ubuntu8.3~backport20.04.202408022321~ubuntu20.04.1) ...
dpkg: dependency problems prevent configuration of libvirt-daemon-system:
 libvirt-daemon-system depends on polkitd (>= 0.105-26); however:
  Package polkitd is not installed.

dpkg: error processing package libvirt-daemon-system (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 libvirt-daemon-system

Managed to fix by s/polkitd (>= 0.105-26)//g in the DEBIAN/control file.

Cheers!

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[Bug 1916303] Re: [RFE] kdump memory estimator

2024-05-03 Thread Guilherme G. Piccoli
The estimator was merged on Debian's kdump-tools (and will be integrated
in Ubuntu next release). So, from this PoV, it can be closed.

** Changed in: makedumpfile (Ubuntu)
   Status: In Progress => Fix Committed

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[Bug 2058278] Re: [Backport] libvirt-daemon-system won't install on Focal

2024-03-29 Thread Guilherme G. Piccoli
Thanks a bunch for the prompt fix.

Tested here and it's working fine =)

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[Bug 2058278] Re: [Backport] libvirt-daemon-system won't install on Focal

2024-03-18 Thread Guilherme G. Piccoli
Thanks Sergio for opening the issue, and thanks in advance Bryce for
looking.

So, it seems changing polkitd for polkit-1 in the dependency of this
package (for the 20.04 backport) is a sensible fix - seems to be working
here, I've used dpkg-deb to rebuild this package with such change and
it's working fine so far.

Cheers!

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[Bug 1918948] Re: Issue in Extended Disk Data retrieval (biosdisk: int 13h/service 48h)

2022-06-02 Thread Guilherme G. Piccoli
@Filofel, thanks for your report! Very interesting. Is your machine a
Dell, running with HW RAID?

My experience so far with GRUB and this LP bug is that there are two
things here:

(a) Seems commit [0] might be missing in old Ubuntu releases (IIRC
Xenial, but *maybe* Bionic). This might cause issues with some disks 2T+
...

(b) [And this is the main issue reported in this LP] Dell HW RAID
*legacy BIOS* driver has a bug and fails to inform properly some data to
Grub. In other words: imagine 5x1T disks composing a HW RAID of 5T. Grub
asks BIOS data (through nativedisk likely) and the legacy BIOS driver
from Dell returns data from disk 01 only - 1T of size. So, if GRUB
itself (some module, for example) or the kernel/initrd are present in
sectors *after* disk 01 size, it fails to load.

For more reference on that, please check the following thread:
https://lists.gnu.org/archive/html/grub-devel/2021-03/msg00380.html
[According Dell, this is "expected" and UEFI is required!]


So, your case seems a little bit different. Maybe wirth to clarify the exact 
model of your 4T disk, the version of Firmware (and of course the machine 
model) and maybe collect some GRUB logs.
Interesting that you mentioned running with "--disk-module=ahci" make it works 
- I wonder why this isn't set by defualt on Ubuntu, likely there is a reason 
and I'm not aware.

Cheers!


[0] https://git.savannah.gnu.org/cgit/grub.git/commit/?id=d1130afa5f

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[Bug 1970672] Re: makedumpfile falls back to cp with "__vtop4_x86_64: Can't get a valid pmd_pte."

2022-05-25 Thread Guilherme G. Piccoli
Thanks a lot Cascardo and Dann - very good points.

Cascardo: I agree with you, I misunderstood and didn't consider the
minor kernel releases. I think that Dann's idea of testing makes it much
simpler though. Maybe kernel team could create the vmcore images, as
part of the release process, for some random kernels (like generic + 3
cloud kernels randomly) and "dump" into this server. So, makedumpfile
test infrastructure would then consume the vmcores and execute the test,
checking against bugs/regressions. The test could be quite simple, just
checking return value of makedumpfile and if the file created is in fact
a compressed dump (the "file" tool could be used by that).

I agree with you as well Dann, makedumpfile is much more important than
the crash tool and should have priority. Also, testing makedump is
easier than checking the crash tool I guess heheh

Cheers!

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[Bug 1970672] Re: makedumpfile falls back to cp with "__vtop4_x86_64: Can't get a valid pmd_pte."

2022-05-24 Thread Guilherme G. Piccoli
Thanks Kellen and Cascardo.

Kellen, nice that you're willing to work on that - this is a long
standing problem and that work would be definitely appreciated by the
Ubuntu community, be it free users or the Ubuntu Advantage customers!

Cascardo, about your two risks:

(a) Partially agree with that. I agree with the part of testing,
definietly this is the big chunk of work here. But I disagree with the
retrocompatibility claim: of course we need to enforce that, but it's
not that difficult in the LTS->LTS+1 model. See, we have a small number
of HWE kernel per LTS release, I guess 4 or 5 correct? We need to be
sure the makedumpfile updates are compatible with them, and that's it.

If I'm talking Focal and some makedumpfile update (unintentionally) breaks 
dumps for kernel 4.19 or prior, why should we care if that's an unsupported 
scenario?
IMHO it's much better to ensure that every HWE kernel receives a proper 
functional makedumpfile update, instead of an overly cautious attitude with 
older/unsupported kernels.

(b) I agree here, but I guess the effort of SRU exception/ LTS->LTS+1
model will only make it easier. Imagine if when Ubuntu version X is
released the upstream makedumpfile is not handling well the recent
kernel version used by X - so we could either fix (or report) the
makedumpfile issue quickly (especially due to part (a) above, the
improved testing). Then, once it's fixed either by Canonical or
community, this could quickly be integrated through a fast process, a
version bump for makedumpfile for example.

In the end, I think testing is the key word here - the more serious and
thorough tests makedumpfile has, the more confidence in such model we'd
have. But hopefully with Kellen's effort this stops preventing a more
proactive approach with makedumpfile from happening, by updating it
before users report bugs (which has been happening since forever for
this package).

Cheers!

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[Bug 1970672] Re: makedumpfile falls back to cp with "__vtop4_x86_64: Can't get a valid pmd_pte."

2022-05-23 Thread Guilherme G. Piccoli
Hi Kellen, thanks a lot for reporting and fixing that!

I'd like to take the opportunity to discuss something related: no matter
how many bugs we fix in makedumpfile / crash, more will come as kernel
version bumps. Kernel has no stable ABI, so kernel developers can
"break" compatibility with such tools, although makedumpfile maintainer
(and crash's as well!) are really great in keep up with that and release
proactive fixes even before the kernel change is merged.

But the problem is: in Ubuntu ecosystem, despite we have the HWE concept
for kernel, these packages are not part of kernel HWE upgrades; hence,
they get "stuck" and subject to bugs when kernel HWE is released. It
happens all the time and will continue happening...

We had discussions in the past (and I'm hereby CCing the interested
parties: DannF, Dan Streetman, Heitor and Cascardo) about sync'ing
makedumpfile and crash with kernel HWE upgrades. So, that might be a
good opportunity for doing it.

The idea was more or less like this: update makedump/crash on Release to make 
it sync'ed with Release +1 until the next LTS. So, in the end, we'll have LTS 
version == LTS +1 and then, we stop upgrading/syncing these packages. And the 
cycle restarts for LTS+1, up to the release of LTS+2.
Hopefully this plan (or something similar) eventually is followed, I bet all 
users/customers would be glad to not face makedump/crash bugs due to kernel 
upgrades anymore!

Cheers, and thanks for the attention =D

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[Bug 1966167] [NEW] All apps button in dock doesn't respect Fitts Law

2022-03-23 Thread Guilherme
Public bug reported:

If you go to the bottom left corner of the dock and click, the All Apps
button doesn't get triggered or highlighted. Check attached video for
details.


Ubuntu 21.10. Live mode. 1920x1080 screen.

** Affects: ubuntu
 Importance: Undecided
 Status: New


** Tags: 21.10 button dock gui hitbox interface

** Attachment added: "VID_20220324_013640.mp4"
   
https://bugs.launchpad.net/bugs/1966167/+attachment/5572392/+files/VID_20220324_013640.mp4

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[Bug 1929935] Re: Impossible to stop and skip integrity test for ubuntu-server 20.04.2 iso after it has started

2022-03-21 Thread Guilherme G. Piccoli
*** This bug is a duplicate of bug 1892369 ***
https://bugs.launchpad.net/bugs/1892369

** This bug has been marked a duplicate of bug 1892369
   Impossible to skip integrity test for ubuntu-server 20.04.1 iso

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  iso after it has started

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[Bug 1892369] Re: Impossible to skip integrity test for ubuntu-server 20.04.1 iso

2022-03-21 Thread Guilherme G. Piccoli
Very very nice findings @mfo, thanks a lot! That explains everything -
likely in my test I've added the parameter _before_ the line ending...

It's unfortunate we cannot break the test with ctrl_c, hopefully there's
a way for that, but if not, at least the bug in the line parsing is
fixed. Hopefully we can get your patch accepted quickly and have it
backported to Focal.

Thanks again!

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[Bug 1929935] Re: Impossible to stop and skip integrity test for ubuntu-server 20.04.2 iso after it has started

2022-03-21 Thread Guilherme G. Piccoli
*** This bug is a duplicate of bug 1892369 ***
https://bugs.launchpad.net/bugs/1892369

Hi folks, please follow the other LP (older):
https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1892369

There is a fix over there, in fact there was a bug in casper - thanks
for the reports, much appreciated.

I'll close this one as duplicate...

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[Bug 1965176] [NEW] Create mode does not persist after reboot

2022-03-16 Thread Guilherme T Maeoka
Public bug reported:

Command `grep ^\s*\$FileCreateMode /etc/rsyslog.conf
/etc/rsyslog.d/*.conf` returns `/etc/rsyslog.conf:$FileCreateMode 0640`,
but logfiles are created with read permission for others.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: rsyslog 8.2001.0-1ubuntu1.1
ProcVersionSignature: Ubuntu 5.13.0-35.40~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-35-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 16 16:22:35 2022
InstallationDate: Installed on 2021-10-16 (151 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
SourcePackage: rsyslog
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.rsyslog.conf: 2022-03-16T15:49:11.564719

** Affects: rsyslog (Ubuntu)
 Importance: Undecided
 Status: New


** Tags: amd64 apport-bug focal

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[Bug 1958827] Re: podman-docker socket does not allow access for the docker group

2022-02-02 Thread Guilherme Blanco
I solved this problem by modifying:
/etc/systemd/system/sockets.target.wants/podman.socket

Changed the line SocketMode=0660 to SocketMode=0666
Then ran:

sudo systemctl daemon-reload
sudo systemctl restart podman.socket

Problem solved. =)

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[Bug 1955483] Re: dhcp4 (wlp1s0): could not get netmask from lease

2021-12-21 Thread Guilherme Salgado
** Description changed:

+ I get this on n-m 1.30.0-1ubuntu3 (hirsuite) and 1.32.12-0ubuntu1
+ (impish). It's been reported and fixed upstream. Any chance of getting
+ an update to the impish package with the fix?
+ 
  Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9548] device 
(wlp1s0): supplicant interface state: associating -> 4way_handshake
  Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9548] device 
(p2p-dev-wlp1s0): supplicant management interface state: associating -> 
4way_handshake
  Dec 21 06:23:54 t495 wpa_supplicant[1024]: wlp1s0: WPA: Key negotiation 
completed with 00:19:88:4d:03:b3 [PTK=CCMP GTK=TKIP]
  Dec 21 06:23:54 t495 kernel: [  787.299157] IPv6: ADDRCONF(NETDEV_CHANGE): 
wlp1s0: link becomes ready
  Dec 21 06:23:54 t495 wpa_supplicant[1024]: wlp1s0: CTRL-EVENT-CONNECTED - 
Connection to 00:19:88:4d:03:b3 completed [id=0 id_str=]
  Dec 21 06:23:54 t495 wpa_supplicant[1024]: wlp1s0: CTRL-EVENT-SIGNAL-CHANGE 
above=0 signal=-53 noise= txrate=1000
  Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9698] device 
(wlp1s0): supplicant interface state: 4way_handshake -> completed
  Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9698] device 
(wlp1s0): Activation: (wifi) Stage 2 of 5 (Device Configure) successful. 
Connected to wireless network "VesperXB-Arawa"
  Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9699] device 
(p2p-dev-wlp1s0): supplicant management interface state: 4way_handshake -> 
completed
  Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9703] device 
(wlp1s0): state change: config -> ip-config (reason 'none', sys-iface-state: 
'managed')
  Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9707] dhcp4 
(wlp1s0): activation: beginning transaction (timeout in 45 seconds)
  Dec 21 06:23:54 t495 avahi-daemon[984]: Joining mDNS multicast group on 
interface wlp1s0.IPv6 with address fe80::86b7:7a02:8867:b893.
  Dec 21 06:23:54 t495 avahi-daemon[984]: New relevant interface wlp1s0.IPv6 
for mDNS.
  Dec 21 06:23:54 t495 avahi-daemon[984]: Registering new address record for 
fe80::86b7:7a02:8867:b893 on wlp1s0.*.
  Dec 21 06:23:55 t495 NetworkManager[989]:   [1640089435.0002] dhcp4 
(wlp1s0): could not get netmask from lease
  Dec 21 06:23:55 t495 NetworkManager[989]:   [1640089435.0003] dhcp4 
(wlp1s0): state changed unknown -> fail

** Bug watch added: 
gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues #848
   https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/848

** Also affects: network-manager via
   https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/848
   Importance: Unknown
   Status: Unknown

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[Bug 1955483] [NEW] dhcp4 (wlp1s0): could not get netmask from lease

2021-12-21 Thread Guilherme Salgado
Public bug reported:

I get this on n-m 1.30.0-1ubuntu3 (hirsuite) and 1.32.12-0ubuntu1
(impish). It's been reported and fixed upstream. Any chance of getting
an update to the impish package with the fix?

Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9548] device 
(wlp1s0): supplicant interface state: associating -> 4way_handshake
Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9548] device 
(p2p-dev-wlp1s0): supplicant management interface state: associating -> 
4way_handshake
Dec 21 06:23:54 t495 wpa_supplicant[1024]: wlp1s0: WPA: Key negotiation 
completed with 00:19:88:4d:03:b3 [PTK=CCMP GTK=TKIP]
Dec 21 06:23:54 t495 kernel: [  787.299157] IPv6: ADDRCONF(NETDEV_CHANGE): 
wlp1s0: link becomes ready
Dec 21 06:23:54 t495 wpa_supplicant[1024]: wlp1s0: CTRL-EVENT-CONNECTED - 
Connection to 00:19:88:4d:03:b3 completed [id=0 id_str=]
Dec 21 06:23:54 t495 wpa_supplicant[1024]: wlp1s0: CTRL-EVENT-SIGNAL-CHANGE 
above=0 signal=-53 noise= txrate=1000
Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9698] device 
(wlp1s0): supplicant interface state: 4way_handshake -> completed
Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9698] device 
(wlp1s0): Activation: (wifi) Stage 2 of 5 (Device Configure) successful. 
Connected to wireless network "VesperXB-Arawa"
Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9699] device 
(p2p-dev-wlp1s0): supplicant management interface state: 4way_handshake -> 
completed
Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9703] device 
(wlp1s0): state change: config -> ip-config (reason 'none', sys-iface-state: 
'managed')
Dec 21 06:23:54 t495 NetworkManager[989]:   [1640089434.9707] dhcp4 
(wlp1s0): activation: beginning transaction (timeout in 45 seconds)
Dec 21 06:23:54 t495 avahi-daemon[984]: Joining mDNS multicast group on 
interface wlp1s0.IPv6 with address fe80::86b7:7a02:8867:b893.
Dec 21 06:23:54 t495 avahi-daemon[984]: New relevant interface wlp1s0.IPv6 for 
mDNS.
Dec 21 06:23:54 t495 avahi-daemon[984]: Registering new address record for 
fe80::86b7:7a02:8867:b893 on wlp1s0.*.
Dec 21 06:23:55 t495 NetworkManager[989]:   [1640089435.0002] dhcp4 
(wlp1s0): could not get netmask from lease
Dec 21 06:23:55 t495 NetworkManager[989]:   [1640089435.0003] dhcp4 
(wlp1s0): state changed unknown -> fail

** Affects: network-manager
 Importance: Unknown
 Status: Unknown

** Affects: network-manager (Ubuntu)
 Importance: Undecided
 Status: New

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[Bug 1949395] Re: [RFE] Add zstd support for makedumpfile and use it by default

2021-11-01 Thread Guilherme G. Piccoli
Results of the simple experiment:


$ time makedumpfile -l -d 31 -F /proc/vmcore  | cat > dump.l
Copying data  : [100.0 %] /   eta: 
0s
makedumpfile Completed.

real0m0.417s


$ time makedumpfile -c -d 31 -F /proc/vmcore  | cat > dump.c
Copying data  : [100.0 %] |   eta: 
0s
makedumpfile Completed.

real0m1.866s


$ time makedumpfile -z -d 31 -F /proc/vmcore  | cat > dump.z
Copying data  : [100.0 %] /   eta: 
0s
makedumpfile Completed.

real0m0.802s


$ ls -lh dump.*
-rw-r--r-- 1 root root 29M Nov  1 14:04 dump.c
-rw-r--r-- 1 root root 43M Nov  1 14:05 dump.l
-rw-r--r-- 1 root root 26M Nov  1 14:05 dump.z

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  [RFE] Add zstd support for makedumpfile and use it by default

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[Bug 1949395] [NEW] [RFE] Add zstd support for makedumpfile and use it by default

2021-11-01 Thread Guilherme G. Piccoli
Public bug reported:

Recently makedumpfile had zstd[0] support added upstream[1]. My
suggestion here is to backport this work for Debian/Ubuntu and use it as
default (starting for example in 22.04), since it has a better
compression time and similar or even better compression rate. In [1]
there are good experiments, but I did a simple experiment in a small VM
(2G of RAM, idle) using Debian 11 (results in the first comment].

I'll open a Debian bug as well.
Thanks in advance,


Guilherme


[0] https://en.wikipedia.org/wiki/Zstandard
[1] http://lists.infradead.org/pipermail/kexec/2021-September/023011.html

** Affects: makedumpfile (Ubuntu)
 Importance: Undecided
 Status: New

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[Bug 1916303] Re: [RFE] kdump memory estimator

2021-11-01 Thread Guilherme G. Piccoli
V3 posted: https://salsa.debian.org/debian/kdump-
tools/-/merge_requests/16

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Title:
  [RFE] kdump memory estimator

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[Bug 1931779] Re: kdump just hung out of the box

2021-08-02 Thread Guilherme G. Piccoli
This is a good suggestion Rich! I've looped Dann and Cascardo, both
maintainers of kdump-tools to also discuss this subject.

We could have a more explicit message when installing the package, maybe
in the same screen that asks if we want to enable kdump by default. I'm
against the idea of _not_ setting the default crashkernel though - good
suggestion for intermediate/advanced users, bad suggestion for beginners
I think. Also, I must say: my experience was pretty reciprocal to yours.
The default always worked for me in regular/simple HW or VMs, it fails
in more peculiar setups, like 200 PCI devices, 1 TiB of RAM, etc.

Thanks for bringing-up the discussion =)

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  kdump just hung out of the box

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[Bug 1931779] Re: kdump just hung out of the box

2021-08-02 Thread Guilherme G. Piccoli
Oh yeah, it would be awesome to set such message...but I'm not sure how
we can do it! If we know beforehand that the reserved memory amount
won't work for your system, to show the message..why we don't just fix
it?

The problem is that this is a policy, there is no technical mechanism
(currently) that foresees that a quantity of RAM equals X is required
for your system in order kdump to work. We have the heuristic (aka sets
crashkernel to 192M), which is expected to work on the majority of
machines. Hence, the recommendation for kdump users is to install the
package and perform a dummy kdump, as you did! If it fails, go ahead and
fine tune that.

With the estimator I've pointed you in the last comment, things should improve, 
having a mechanism that will suggest a proper amount, pre-calculated on boot 
time. But until we get that merged, this situation is not ideal and will remain 
like this - I understand it's not the best, if you have a technical suggestion 
on how we could improve it, it's highly appreciated =)
Cheers,


Guilherme

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[Bug 1931779] Re: kdump just hung out of the box

2021-08-02 Thread Guilherme G. Piccoli
Thank you for the report! I think the problem was memory then, you
nailed it - by reserving more memory, you were able to make it work.
This is a policy and currently, the default is a bit conservative in
order to not waste memory. It works in most of the systems...

We have a memory estimator project [0] that (hopefully) will help users to 
determine the proper amount of reserved memory for their systems. For now, I 
guess we can consider this bug fixed (by the reporter!).
Cheers,


Guilherme


[0] https://salsa.debian.org/debian/kdump-tools/-/merge_requests/13

** Changed in: makedumpfile (Ubuntu)
   Status: New => Fix Released

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[Bug 1882623] Re: VM enter into hung status after triggering a crash

2021-07-23 Thread Guilherme G. Piccoli
ppa canonical-kernel-esm
+ * Our theory is that on kdump kernel, specially due to the single cpu
+ nature, the vmbus-messaged timer IRQ could interfere with scheduling and
+ create a dead-lock condition, which is what we observe from the stack
+ traces. Hence, we hereby propose to backport such patch to azure 4.15
+ kernels.
  
- Install kernel linux-azure, reboot VM, kernel version 4.15.0-1084-azure
+ * Our hypothesis about why this wasn't observed in Bionic is that
+ changes in the kdump mechanism make it start earlier, and this might
+ hide the schedule issue. Lack of testing also could be the cause of the
+ non-observability.
  
- Trigger a crash by run echo 1 > /proc/sys/kernel/sysrq, then echo c >
- /proc/sysrq-trigger, VM entered into a hung status.
+ [Test Case]
  
- Attach whole serial console
- [   65.452007] INFO: rcu_sched detected stalls on CPUs/tasks:
- [   65.456004]  1-...!: (0 ticks this GP) idle=488/0/0 softirq=1/1 fqs=0
- [   65.456004]  (detected by 0, t=15002 jiffies, g=707, c=706, q=8457)
- [   65.456004] rcu_sched kthread starved for 15002 jiffies! g707 c706 f0x0 
RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1
- [  360.020026] INFO: rcu_sched detected stalls on CPUs/tasks:
- [  360.024015]  1-...!: (10 GPs behind) idle=b34/0/0 softirq=1/1 fqs=1
- [  360.024015]  (detected by 0, t=15002 jiffies, g=717, c=716, q=6429)
- [  360.024015] rcu_sched kthread starved for 15000 jiffies! g717 c716 f0x0 
RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1
- [  420.048010] INFO: rcu_sched detected stalls on CPUs/tasks:
- [  420.052006]  1-...!: (0 ticks this GP) idle=f94/0/0 softirq=1/1 fqs=0
- [  420.052006]  (detected by 0, t=15002 jiffies, g=718, c=717, q=6429)
- [  420.052006] rcu_sched kthread starved for 15002 jiffies! g718 c717 f0x0 
RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1
+ * Perform a kdump in Trusty/4.15 and after some rounds, you should see
+ the mentioned RCU stack trace. With the patch, no issue is observed, and
+ we could perform ~30 kdumps in a row.
+ 
+ [Where problems could occur]
+ 
+ * Since the patch touches IRQ code (although restricted to Hyper-v),
+ it's a somewhat invasive change. It could lead to issues in the IRQ
+ subsystem, although the patch is upstream since 2018 and no fixes for
+ that were found (we count on Fixes tag for that).

** Also affects: linux-azure (Ubuntu Bionic)
   Importance: Undecided
   Status: New

** Changed in: linux-azure (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux-azure (Ubuntu)
 Assignee: (unassigned) => Marcelo Cerri (mhcerri)

** Changed in: linux-azure (Ubuntu Bionic)
 Assignee: (unassigned) => Marcelo Cerri (mhcerri)

** Changed in: linux-azure (Ubuntu Bionic)
   Status: New => In Progress

** Changed in: linux-azure (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux-azure (Ubuntu Bionic)
   Importance: Undecided => Medium

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[Bug 1914456] Re: 120 sec kernel timeout is seen during SCSI remove_device.

2021-07-23 Thread Guilherme G. Piccoli
** Changed in: open-iscsi (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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  120 sec kernel timeout is seen during SCSI remove_device.

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[Bug 1932966] Re: kvm_unit_tests: emulator test fails on 4.15 kernel, timeout

2021-07-23 Thread Guilherme G. Piccoli
** Changed in: ubuntu-kernel-tests
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux-kvm (Ubuntu Bionic)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux-kvm (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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  kvm_unit_tests: emulator test fails on 4.15 kernel, timeout

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[Bug 1934175] Re: Kernel oops due to uninitialized list on kernfs (kernfs_kill_sb)

2021-07-23 Thread Guilherme G. Piccoli
** Changed in: linux (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu Bionic)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu Bionic)
 Assignee: (unassigned) => Krzysztof Kozlowski (krzk)

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  Kernel oops due to uninitialized list on kernfs (kernfs_kill_sb)

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[Bug 1893837] Re: [RFE] Enable makedumpfile invocation from initramfs

2021-07-22 Thread Guilherme G. Piccoli
** Changed in: kdump-tools (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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Title:
  [RFE] Enable makedumpfile invocation from initramfs

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[Bug 1592597] Re: 3.13.0-88-generic:amd64 fails to boot on Dell PowerEdge R630

2021-07-20 Thread Guilherme G. Piccoli
** Changed in: linux (Ubuntu Trusty)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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Title:
  3.13.0-88-generic:amd64 fails to boot on Dell PowerEdge R630

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[Bug 1873662] Re: maas/pxe cannot boot with nvme device (ovmf works)

2021-07-20 Thread Guilherme G. Piccoli
** Changed in: seabios (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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Title:
  maas/pxe cannot boot with nvme device (ovmf works)

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[Bug 1749961] Re: xhci_hcd: TRB DMA errors reported with ASMedia ASM1142 USB 3.1 Controller

2021-07-20 Thread Guilherme G. Piccoli
** Changed in: linux (Debian)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu Trusty)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu Bionic)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu Focal)
     Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu Xenial)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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Title:
  xhci_hcd: TRB DMA errors reported with ASMedia ASM1142 USB 3.1
  Controller

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[Bug 1914830] Re: Mellanox Patches To Prevent Kernel Hang In MLX4

2021-07-20 Thread Guilherme G. Piccoli
** Changed in: linux-azure (Ubuntu)
   Status: In Progress => Fix Released

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  Mellanox Patches To Prevent Kernel Hang In MLX4

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[Bug 1926501] Re: ADT/hint: Multiple DKMS modules fail to build in linux-kvm due to lack of Kconfigs set

2021-07-20 Thread Guilherme G. Piccoli
** Changed in: linux-kvm (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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  ADT/hint: Multiple DKMS modules fail to build in linux-kvm due to lack
  of Kconfigs set

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[Bug 1932549] Re: seltests/net: devlink port split failing in H-5.11 KVM kernels (Error sending command: devlink -j dev show)

2021-07-20 Thread Guilherme G. Piccoli
** Changed in: ubuntu-kernel-tests
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux-kvm (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux-kvm (Ubuntu Hirsute)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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  seltests/net: devlink port split failing in H-5.11 KVM kernels (Error
  sending command: devlink -j dev show)

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[Bug 1932965] Re: selftests/net/rtnetlink - Failure in RISC-V (uuidgen command not found)

2021-07-20 Thread Guilherme G. Piccoli
** Changed in: ubuntu-kernel-tests
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

** Changed in: linux (Ubuntu Groovy)
 Assignee: Guilherme G. Piccoli (gpiccoli) => (unassigned)

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  selftests/net/rtnetlink - Failure in RISC-V (uuidgen command not
  found)

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[Bug 1934424] Re: kernel NULL pointer dereference during xen hibernation

2021-07-20 Thread Guilherme G. Piccoli
Logs:
[  594.291317] ACPI: Hardware changed while hibernated, success doubtful!
[  594.411609] BUG: kernel NULL pointer dereference, address: 01f4
[  594.424658] #PF: supervisor write access in kernel mode
[  594.424660] #PF: error_code(0x0002) - not-present page
[  594.424661] PGD 0 P4D 0 
[  594.424665] Oops: 0002 [#1] SMP PTI
[  594.424668] CPU: 3 PID: 362 Comm: systemd-timesyn Not tainted 5.8.0-1036-aws 
#38~20.04.1-Ubuntu
[  594.424669] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006
[  594.424675] RIP: 0010:_raw_spin_lock_irqsave+0x23/0x40
[...]
[  594.424692] Call Trace:
[  594.424699]  xennet_start_xmit+0x158/0x570

By looking the assembly, this is where it fails:

8182d8e0 :
[...]
8182da0a:   48 83 f8 0d cmp$0xd,%rax
8182da0e:   0f 86 46 03 00 00   jbe8182dd5a 


### pahole --hex -C netfront_queue  usr/lib/debug/boot/vmlinux-5.8.0-1035-aws 
|grep lock
## spinlock_t tx_lock;  /* 0x1f4   0x4 */

8182da14:   49 8d 86 f4 01 00 00lea0x1f4(%r14),%rax # <-- 
#rax = &queue->tx_lock
8182da1b:   45 8b 4c 24 70  mov0x70(%r12),%r9d
8182da20:   45 2b 4c 24 74  sub0x74(%r12),%r9d
8182da25:   48 89 c7mov%rax,%rdi # <-- %rdi = 
%rax
8182da28:   44 89 4d 94 mov%r9d,-0x6c(%rbp)
8182da2c:   48 89 85 78 ff ff ffmov%rax,-0x88(%rbp)
8182da33:   e8 38 52 36 00  callq  81b92c70 
<_raw_spin_lock_irqsave> #<-- OOPS here
[...]

By correlating with the code, we have this in C:

static netdev_tx_t xennet_start_xmit(struct sk_buff *skb, struct net_device 
*dev)
[...]
len = skb_headlen(skb);

spin_lock_irqsave(&queue->tx_lock, flags); // <<< HERE

if (unlikely(!netif_carrier_ok(dev) ||
[...]

Happens that queue->tx_lock is NULL.
What is interesting is the message:

[  594.291317] ACPI: Hardware changed while hibernated, success
doubtful!


So, it means the hibernation woke in a different compute node than it went 
sleeping. I'm still not 100% sure of why that would cause such OOPS...but I 
have 2 ideas to either prevent it and validate that hypothesis:

(a) To modprobe unload the xen network driver right before hibernation
and load it in the last stage of wake-up - I've done that myself in the
hibernation scripts. This would likely prevent this issue.

(b) For testing personnel : maybe you're able to "lock" the testing to
sleep/wake-up *always* in the same compute node/instance. If that
prevents the issue, we're sure that the difference between the nodes rom
sleep/wake-up is triggering some memory corruption in the device queue,
that is somewhat propagated to the kernel memory.

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[Bug 1866323] Re: btrfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

2021-07-16 Thread Guilherme G. Piccoli
Observed in B/aws-fips (kernel 4.15), cycle sru-20210621.

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  btrfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

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[Bug 1876684] Re: fanotify09 case 3 (Events on files and dirs with both inode and mount marks) from ubuntu_ltp_syscalls failed

2021-07-16 Thread Guilherme G. Piccoli
Observed in B/aws-fips (kernel 4.15), cycle sru-20210621.

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Title:
  fanotify09 case 3 (Events on files and dirs with both inode and mount
  marks) from ubuntu_ltp_syscalls  failed

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[Bug 1900951] Re: ptrace10 from ubuntu_ltp_syscalls failed on T/X/B

2021-07-16 Thread Guilherme G. Piccoli
Observed in B/aws-fips (kernel 4.15), cycle sru-20210621.

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Title:
  ptrace10 from ubuntu_ltp_syscalls failed on T/X/B

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[Bug 1918692] Re: ubuntu-kvm-unit-test/vmx_apic_passthrough_thread reports assertion failure

2021-07-16 Thread Guilherme G. Piccoli
Observed in B/aws-fips (kernel 4.15), cycle sru-20210621.

** Tags added: fips

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Title:
  ubuntu-kvm-unit-test/vmx_apic_passthrough_thread reports assertion
  failure

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[Bug 1923284] Re: vmx_host_state_area / vmx_intr_window_test / vmx_nmi_window_test / vmx_hlt_with_rvi_test fails with timeout on Bionic

2021-07-16 Thread Guilherme G. Piccoli
Observed in B/aws-fips (kernel 4.15), cycle sru-20210621.

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Title:
  vmx_host_state_area / vmx_intr_window_test / vmx_nmi_window_test /
  vmx_hlt_with_rvi_test  fails with timeout on Bionic

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[Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15

2021-07-16 Thread Guilherme G. Piccoli
Observed in B/aws-fips (kernel 4.15), cycle sru-20210621.

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Title:
  cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15

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[Bug 1853798] Re: umip_basic_test in kernel_misc from ubuntu_ltp failed on D-Oracle / B-oracle-4.15

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/oracle (kernel 4.15), cycle sru-20210621.

** Tags added: 4.15 sru-20210621

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Title:
  umip_basic_test in kernel_misc from ubuntu_ltp failed on D-Oracle /
  B-oracle-4.15

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[Bug 1866323] Re: btrfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/oracle (kernel 4.15), cycle sru-20210621.

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Title:
  btrfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

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[Bug 1918692] Re: ubuntu-kvm-unit-test/vmx_apic_passthrough_thread reports assertion failure

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/oracle (kernel 4.15), cycle sru-20210621.

** Tags added: oracle

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  ubuntu-kvm-unit-test/vmx_apic_passthrough_thread reports assertion
  failure

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[Bug 1923284] Re: vmx_host_state_area / vmx_intr_window_test / vmx_nmi_window_test / vmx_hlt_with_rvi_test fails with timeout on Bionic

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/oracle (kernel 4.15), cycle sru-20210621.

** Tags added: oracle

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Title:
  vmx_host_state_area / vmx_intr_window_test / vmx_nmi_window_test /
  vmx_hlt_with_rvi_test  fails with timeout on Bionic

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[Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/oracle (kernel 4.15), cycle sru-20210621.

** Tags added: oracle

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Title:
  cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15

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[Bug 1900951] Re: ptrace10 from ubuntu_ltp_syscalls failed on T/X/B

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

** Tags added: sru-20210621

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Title:
  ptrace10 from ubuntu_ltp_syscalls failed on T/X/B

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[Bug 1918692] Re: ubuntu-kvm-unit-test/vmx_apic_passthrough_thread reports assertion failure

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

** Tags added: aws

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Title:
  ubuntu-kvm-unit-test/vmx_apic_passthrough_thread reports assertion
  failure

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[Bug 1923284] Re: vmx_host_state_area / vmx_intr_window_test / vmx_nmi_window_test / vmx_hlt_with_rvi_test fails with timeout on Bionic

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

** Tags added: aws

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Title:
  vmx_host_state_area / vmx_intr_window_test / vmx_nmi_window_test /
  vmx_hlt_with_rvi_test  fails with timeout on Bionic

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[Bug 1931325] Re: cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

** Tags added: aws

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Title:
  cfs_bandwidth01 in sched from ubuntu_ltp_stable failed on B-4.15

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[Bug 1783881] Re: ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits number of processes

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

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Title:
  ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits
  number of processes

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[Bug 1783881] Re: ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits number of processes

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

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Title:
  ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits
  number of processes

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[Bug 1829983] Re: memcg_stat from controllers test suite in LTP failed

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

** Tags added: sru-20210621

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Title:
  memcg_stat from controllers test suite in LTP failed

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[Bug 1837035] Re: memcg_stat_rss from controllers in ubuntu_ltp failed

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

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Title:
  memcg_stat_rss from controllers in ubuntu_ltp failed

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[Bug 1866323] Re: btrfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

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Title:
  btrfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

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[Bug 1876684] Re: fanotify09 case 3 (Events on files and dirs with both inode and mount marks) from ubuntu_ltp_syscalls failed

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

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Title:
  fanotify09 case 3 (Events on files and dirs with both inode and mount
  marks) from ubuntu_ltp_syscalls  failed

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[Bug 1878389] Re: tpci from kernel_misc in ubuntu_ltp failed with Test-case '13'

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws (kernel 4.15), cycle sru-20210621.

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Title:
  tpci from kernel_misc in ubuntu_ltp failed with Test-case '13'

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[Bug 1812189] Re: test_bpf in net from ubuntu_kernel_selftests failed on cloud kernels

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

** Tags added: sru-20210621

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Title:
  test_bpf in net from ubuntu_kernel_selftests failed on cloud kernels

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[Bug 1827866] Re: vmx_apicv_test in ubuntu_kvm_unit_tests failed on X/B-KVM X-azure / X-aws

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

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Title:
  vmx_apicv_test in ubuntu_kvm_unit_tests failed on X/B-KVM X-azure /
  X-aws

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[Bug 1829984] Re: memcg_usage_in_bytes from controllers test suite in LTP failed

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

** Tags added: oracle

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  memcg_usage_in_bytes from controllers test suite in LTP failed

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[Bug 1851619] Re: test_blackhole_dev from net in ubuntu_kernel_selftests failed on B-GCP 5.3 / F-GKE 5.4

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

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Title:
  test_blackhole_dev from net in ubuntu_kernel_selftests failed on B-GCP
  5.3 / F-GKE 5.4

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[Bug 1886790] Re: lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels (device_add_remove_test)

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

** Tags added: oracle

** Also affects: ubuntu-kernel-tests
   Importance: Undecided
   Status: New

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Title:
  lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels
  (device_add_remove_test)

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[Bug 1887661] Re: pmtu.sh from net in ubuntu_kernel_selftests failed with no error message

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

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Title:
  pmtu.sh from net in ubuntu_kernel_selftests failed with no error
  message

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[Bug 1892213] Re: psock_snd.sh in net from ubuntu_kernel_selftests ADT failure with focal/groovy/hirsute/impish

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

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Title:
  psock_snd.sh in net from ubuntu_kernel_selftests ADT failure with
  focal/groovy/hirsute/impish

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[Bug 1896448] Re: ip6gretap / erspan / ip6erspan in rtnetlink.sh from net of ubuntu_kernel_selftests failed on B-5.4-aws / B-5.4-gke / B-5.4-oracle / B-5.4-azure / B-5.4

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

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Title:
  ip6gretap / erspan / ip6erspan in rtnetlink.sh from net of
  ubuntu_kernel_selftests failed on B-5.4-aws / B-5.4-gke / B-5.4-oracle
  / B-5.4-azure / B-5.4

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[Bug 1917616] Re: vmx test from ubuntu_kvm_unit_tests failed on Bionic/Focal

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

** Tags added: oracle

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Title:
  vmx test from ubuntu_kvm_unit_tests failed on Bionic/Focal

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[Bug 1926142] Re: memfd from ubuntu_kernel_selftests failed to build on B-5.4

2021-07-15 Thread Guilherme G. Piccoli
Observed this on B/oracle-5.4, cycle sru-20210621 .

** Tags added: oracle

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Title:
  memfd from ubuntu_kernel_selftests failed to build on B-5.4

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[Bug 1886790] Re: lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels (device_add_remove_test)

2021-07-15 Thread Guilherme G. Piccoli
** Also affects: lxc
   Importance: Undecided
   Status: New

** No longer affects: lxc

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Title:
  lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels
  (device_add_remove_test)

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[Bug 1886790] Re: lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels (device_add_remove_test)

2021-07-15 Thread Guilherme G. Piccoli
Observed on B/aws-5.4 , cycle 20210621.

** Tags added: 5.4 aws bionic sru-20210621

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Title:
  lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels
  (device_add_remove_test)

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[Bug 1887661] Re: pmtu.sh from net in ubuntu_kernel_selftests failed with no error message

2021-07-15 Thread Guilherme G. Piccoli
Observed on B/aws-5.4 , cycle 20210621.

** Tags added: sru-20210621

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  pmtu.sh from net in ubuntu_kernel_selftests failed with no error
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[Bug 1926142] Re: memfd from ubuntu_kernel_selftests failed to build on B-5.4

2021-07-15 Thread Guilherme G. Piccoli
Observed in B-5.4/aws, cycle sru-20210621 .

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Title:
  memfd from ubuntu_kernel_selftests failed to build on B-5.4

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[Bug 1783881] Re: ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits number of processes

2021-07-15 Thread Guilherme G. Piccoli
Observed in B/aws-5.4, cycle sru-20210621.

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Title:
  ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits
  number of processes

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[Bug 1837035] Re: memcg_stat_rss from controllers in ubuntu_ltp failed

2021-07-15 Thread Guilherme G. Piccoli
Observed a variation of this in B/aws-5.4, cycle sru-20210621 :

18:43:32 DEBUG| [stdout] memcg_stat_rss 9 TINFO: Running memcg_process 
--mmap-anon --mmap-file --shm -s 135168
18:43:32 DEBUG| [stdout] memcg_stat_rss 9 TINFO: Warming up pid: 64876
18:43:32 DEBUG| [stdout] memcg_process: shmget() failed: Invalid argument
18:43:32 DEBUG| [stdout] /opt/ltp/testcases/bin/memcg_stat_rss.sh: 223: kill: 
No such process
18:43:32 DEBUG| [stdout] 
18:43:32 DEBUG| [stdout] memcg_stat_rss 9 TFAIL: Process 64876 exited with 1 
after warm up
18:43:32 DEBUG| [stdout] memcg_stat_rss 10 TINFO: Running memcg_process 
--mmap-lock1 -s 135168
18:43:32 DEBUG| [stdout] memcg_stat_rss 10 TINFO: Warming up pid: 64888
18:43:32 DEBUG| [stdout] memcg_stat_rss 10 TINFO: Process is still here after 
warm up: 64888
18:43:32 DEBUG| [stdout] memcg_stat_rss 10 TPASS: rss is 135168 as expected
18:43:32 DEBUG| [stdout] memcg_stat_rss 10 TPASS: rss is 0 as expected



** Tags added: sru-20210621

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Title:
  memcg_stat_rss from controllers in ubuntu_ltp failed

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[Bug 1830585] Re: cpuset_memory_spread from controllers test suite in LTP failed (hog the memory on the unexpected node)

2021-07-15 Thread Guilherme G. Piccoli
Found on B-5.4/aws, cycle sru-20210621 .

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Title:
  cpuset_memory_spread from controllers test suite in LTP failed (hog
  the memory on the unexpected node)

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[Bug 1827866] Re: vmx_apicv_test in ubuntu_kvm_unit_tests failed on X/B-KVM X-azure / X-aws

2021-07-15 Thread Guilherme G. Piccoli
Observed in B-5.4/aws, cycle sru-20210621 .

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Title:
  vmx_apicv_test in ubuntu_kvm_unit_tests failed on X/B-KVM X-azure /
  X-aws

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[Bug 1917616] Re: vmx test from ubuntu_kvm_unit_tests failed on Bionic/Focal

2021-07-15 Thread Guilherme G. Piccoli
Observed in B-5.4/aws, cycle sru-20210621 .

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Title:
  vmx test from ubuntu_kvm_unit_tests failed on Bionic/Focal

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[Bug 1851619] Re: test_blackhole_dev from net in ubuntu_kernel_selftests failed on B-GCP 5.3 / F-GKE 5.4

2021-07-14 Thread Guilherme G. Piccoli
Observed in G/Oracle, cycle sru-20210621.

** Tags added: groovy sru-20210621

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Title:
  test_blackhole_dev from net in ubuntu_kernel_selftests failed on B-GCP
  5.3 / F-GKE 5.4

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[Bug 1856010] Re: xfrm_policy.sh / pmtu.sh / udpgso_bench.sh from net in ubuntu_kernel_selftests will fail with timeout if running the whole suite

2021-07-14 Thread Guilherme G. Piccoli
Observed in G/Oracle, cycle sru-20210621.

** Tags added: oracle

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Title:
  xfrm_policy.sh / pmtu.sh / udpgso_bench.sh from net in
  ubuntu_kernel_selftests will fail with timeout if running the whole
  suite

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[Bug 1886790] Re: lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels (device_add_remove_test)

2021-07-06 Thread Guilherme G. Piccoli
** Summary changed:

- lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with 5.4 kernels in Bionic
+ lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels 
(device_add_remove_test)

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Title:
  lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with B/5.4 kernels
  (device_add_remove_test)

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[Bug 1884024] Re: lxc-test-device-add-remove from ubuntu_lxc failed on B-5.4

2021-07-06 Thread Guilherme G. Piccoli
*** This bug is a duplicate of bug 1886790 ***
https://bugs.launchpad.net/bugs/1886790

** This bug has been marked a duplicate of bug 1886790
   lxc 3.0.3-0ubuntu1~18.04.1 ADT test failure with 5.4 kernels in Bionic

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Title:
  lxc-test-device-add-remove from ubuntu_lxc failed on B-5.4

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[Bug 1934175] Re: Kernel oops due to uninitialized list on kernfs (kernfs_kill_sb)

2021-06-30 Thread Guilherme G. Piccoli
** Description changed:

- TBD
+ [Impact]
+ * We had a recent report of a kernel crash due to a NULL pointer dereference 
in a Bionic 4.15 derivative kernel, as per the following log collected:
+ 
+ [...]
+ [537105.767348] SLUB: Unable to allocate memory on node -1, 
gfp=0x14000c0(GFP_KERNEL)
+ [...]
+ [537105.767368] BUG: unable to handle kernel NULL pointer dereference at 
0008
+ [537105.11] IP: kernfs_kill_sb+0x31/0x70
+ [537105.783582] PGD 0 P4D 0
+ [537105.787844] Oops: 0002 [#1] SMP PTI
+ [...]
+ RIP: 0010:kernfs_kill_sb+0x31/0x70
+ RSP: 0018:b90aec1afd00 EFLAGS: 00010286
+ RAX:  RBX: 9fdbd567d900 RCX: a0143885ae01
+ RDX:  RSI: a0143885ae00 RDI: a2937c40
+ RBP: b90aec1afd10 R08: a0150b581510 R09: 0001814d
+ R10: b90aec1afcd8 R11: 0100 R12: a01436e43000
+ R13: a01436e43000 R14:  R15: 9fdbd567d900
+ FS:  7fe41a615b80() GS:a01afea4() knlGS:
+ CS:  0010 DS:  ES:  CR0: 80050033
+ CR2: 0008 CR3: 007dfe3cc003 CR4: 003606e0
+ DR0:  DR1:  DR2: 
+ DR3:  DR6: fffe0ff0 DR7: 0400
+ Call Trace:
+  sysfs_kill_sb+0x1f/0x40
+  deactivate_locked_super+0x48/0x80
+  kernfs_mount_ns+0x1eb/0x230
+  sysfs_mount+0x66/0xc0
+  mount_fs+0x37/0x160
+  ? alloc_vfsmnt+0x1b3/0x230
+  vfs_kern_mount.part.24+0x5d/0x110
+  do_mount+0x5ed/0xce0
+ [...]
+ 
+ * The following detailed call stack plus the disassembly help to
+ understand the cause of the issue:
+ 
+ mount_fs()
+ --sysfs_mount()
+ kernfs_mount_ns() 
+ --deactivate_locked_super() 
+ sysfs_kill_sb()
+ --kernfs_kill_sb() 
+ 
+ The below disassembly of kernfs_kill_sb() clarifies exactly the issue:
+ 
+ 812f46e0 :
+ [ ... prologue ...]
+ 48 8b 9f 08 04 00 00mov0x408(%rdi),%rbx # %rbx = kernfs_super_info 
*info = sb->s_fs_info
+ 49 89 fcmov%rdi,%r12 # %r12 = super_block *sb
+ 48 c7 c7 40 7c 53 82mov$0x82537c40,%rdi # %rdi = 
&kernfs_mutex (global)
+ 812f46f9: R_X86_64_32S  kernfs_mutex
+ e8 ee da 67 00  callq  819721f0  # 
mutex_lock(&kernfs_mutex);
+ [...]
+ 48 8b 53 18 mov0x18(%rbx),%rdx # %rdx = info->node
+ 48 8b 43 20 mov0x20(%rbx),%rax # based on splat, RAX == 0x0 
[info->head.prev]
+ 48 89 42 08 mov%rax,0x8(%rdx) # <- OOPS [tried to assign 
next->prev = prev, see __list_del()]
+ 48 89 10mov%rdx,(%rax)
+ 48 b8 00 01 00 00 00movabs $0xdead0100,%rax # node->next = 
LIST_POISON1
+ [...]
+ 
+ * The fix for this issue comes from upstream commit 82382acec0c9
+ ("kernfs: deal with kernfs_fill_super() failures"); this commit is a
+ very trivial fix that adds an INIT_LIST_HEAD(&info->node) in
+ kernfs_mount_ns(), making the list prev/next pointers valid since the
+ beginning. Unfortunately this commit wasn't CCed to stable email when
+ sent, so it wasn't automatically picked up by Ubuntu kernel; now it was
+ properly submitted to stable list [0].
+ 
+ * Along with this fix, we found another commit (7b745a4e4051) which is a
+ small/simple fix to correlated code, that also should have been sent to
+ 4.14.y stable branch, but for some reason wasn't. Since both commits
+ were accepted in linux-stable, we are hereby proposing the backport for
+ Ubuntu kernel 4.15.
+ 
+ [0]
+ https://lore.kernel.org/stable/20210622210622.9925-1-gpicc...@canonical.com/
+ 
+ 
+ [Test Case]
+ * We don't have a real test case, although low-memory condition or an 
artificial kprobe reproducer could easily trigger the issue.
+ 
+ * We booted a qemu virtual machine with a kernel containing both patches
+ with no issues.
+ 
+ 
+ [Where problems could occur]
+ * The likelihood of issues are low, specially due to the fact both patches 
are very simple and they are on upstream kernel for more than 3 years (and were 
quickly accepted in 4.14.y stable branch last week).
+ 
+ * With that sad, the second patch could potentially introduce issues
+ with super_block references - I honestly cannot conceive any issues
+ potentially caused by patch 1.

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Title:
  Kernel oops due to uninitialized list on kernfs (kernfs_kill_sb)

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[Bug 1934175] [NEW] Kernel oops due to uninitialized list on kernfs (kernfs_kill_sb)

2021-06-30 Thread Guilherme G. Piccoli
Public bug reported:

TBD

** Affects: linux (Ubuntu)
 Importance: High
 Assignee: Guilherme G. Piccoli (gpiccoli)
 Status: In Progress

** Affects: linux (Ubuntu Bionic)
 Importance: High
 Assignee: Guilherme G. Piccoli (gpiccoli)
 Status: In Progress

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Bionic)
   Status: New => In Progress

** Changed in: linux (Ubuntu Bionic)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Bionic)
 Assignee: (unassigned) => Guilherme G. Piccoli (gpiccoli)

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  Kernel oops due to uninitialized list on kernfs (kernfs_kill_sb)

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[Bug 1933969] Re: test_pmtu_vti4_link_add_mtu() test from net/pmtu.sh in ubuntu_kernel_selftests cannot finish properly on Groovy

2021-06-29 Thread Guilherme G. Piccoli
Thanks for the report!! We may be missing this patch:

https://git.kernel.org/linus/0d7a7b2014b1 ("ipv6: remove extra
dev_hold() for fallback tunnels")

It has a fixes tag for upstream 40cb881b5aaa, which was merged in our newer 5.8 
kernels - can you test with the fix @cypressyew and let us know?
Thanks!

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  test_pmtu_vti4_link_add_mtu() test from net/pmtu.sh in
  ubuntu_kernel_selftests cannot finish properly on Groovy

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[Bug 1783881] Re: ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits number of processes

2021-06-21 Thread Guilherme G. Piccoli
Found on B-5.4/aws, cycle sru-20210531 .

** Tags added: sru-20210531

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Title:
  ltp-syscalls: msgstress03 / msgstress04 fails because systemd limits
  number of processes

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[Bug 1827866] Re: vmx_apicv_test in ubuntu_kvm_unit_tests failed on X/B-KVM X-azure / X-aws

2021-06-21 Thread Guilherme G. Piccoli
Observed in B-5.4/aws, cycle sru-20210531 .

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Title:
  vmx_apicv_test in ubuntu_kvm_unit_tests failed on X/B-KVM X-azure /
  X-aws

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[Bug 1887661] Re: pmtu.sh from net in ubuntu_kernel_selftests failed with no error message

2021-06-21 Thread Guilherme G. Piccoli
Observed in B-5.4/aws, cycle sru-20210531 .

** Tags added: aws

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Title:
  pmtu.sh from net in ubuntu_kernel_selftests failed with no error
  message

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[Bug 1891003] Re: mem-on-off-test.sh from memory-hotplug in ubuntu_kernel_selftests failed with script is not executable

2021-06-21 Thread Guilherme G. Piccoli
Observed in B-5.4/aws, cycle sru-20210531 .

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Title:
  mem-on-off-test.sh from memory-hotplug in ubuntu_kernel_selftests
  failed with script is not executable

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[Bug 1926142] Re: memfd from ubuntu_kernel_selftests failed to build on B-5.4

2021-06-21 Thread Guilherme G. Piccoli
Observed in B-5.4/aws, cycle sru-20210531 .

** Tags added: aws sru-20210531

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  memfd from ubuntu_kernel_selftests failed to build on B-5.4

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[Bug 1884024] Re: lxc-test-device-add-remove from ubuntu_lxc failed on B-5.4

2021-06-21 Thread Guilherme G. Piccoli
Observed with B-5.4/aws, cycle sru-20210531 .

** Tags added: sru-20210531

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Title:
  lxc-test-device-add-remove from ubuntu_lxc failed on B-5.4

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[Bug 1830585] Re: cpuset_memory_spread from controllers test suite in LTP failed (hog the memory on the unexpected node)

2021-06-21 Thread Guilherme G. Piccoli
Found on B-5.4/aws, cycle sru-20210531 .

** Tags added: aws

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Title:
  cpuset_memory_spread from controllers test suite in LTP failed (hog
  the memory on the unexpected node)

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[Bug 1821905] Re: umip in ubuntu_kvm_unit_test failed on T-3.13 / T-4.4

2021-06-21 Thread Guilherme G. Piccoli
Found on T-4.15/Azure, cycle sru-20210531 .

** Tags added: 4.15 azure sru-20210531

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  umip in ubuntu_kvm_unit_test failed on T-3.13 / T-4.4

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[Bug 1831449] Re: memory in ubuntu_kvm_unit_tests fails (clflushopt / clwb ABSENT)

2021-06-21 Thread Guilherme G. Piccoli
Observed in T-4.15/Azure, cycle sru-20210531.

** Summary changed:

- memory in ubuntu_kvm_unit_tests fails (clflushopt / cwlb ABSENT)
+ memory in ubuntu_kvm_unit_tests fails (clflushopt / clwb ABSENT)

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  memory in ubuntu_kvm_unit_tests fails (clflushopt / clwb ABSENT)

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[Bug 1839064] Re: prctl07 from ubuntu_ltp_syscalls failed on T-4.4

2021-06-21 Thread Guilherme G. Piccoli
Observed in T-4.15/Azure, cycle sru-20210531 .

** Tags added: sru-20210531

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Title:
  prctl07 from ubuntu_ltp_syscalls failed on T-4.4

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[Bug 1900951] Re: ptrace10 from ubuntu_ltp_syscalls failed on T/X/B

2021-06-21 Thread Guilherme G. Piccoli
Observed in T-4.15/Azure, cycle sru-20210531 .

** Summary changed:

- ptrace10 from ubuntu_ltp_syscalls failed on X/B
+ ptrace10 from ubuntu_ltp_syscalls failed on T/X/B

** Tags added: sru-20210531

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Title:
  ptrace10 from ubuntu_ltp_syscalls failed on T/X/B

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[Bug 1785207] Re: openat03 in ubuntu_ltp_syscall failed with Trusty

2021-06-21 Thread Guilherme G. Piccoli
Found in T-4.15/Azure, cycle sru-20210531 .

** Tags added: sru-20210531

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Title:
  openat03 in ubuntu_ltp_syscall failed with Trusty

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[Bug 1876684] Re: fanotify09 case 3 from ubuntu_ltp_syscalls failed

2021-06-21 Thread Guilherme G. Piccoli
Observed in T-4.15/Azure, cycle sru-20210531 .

** Tags added: sru-20210531

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Title:
  fanotify09 case 3 from ubuntu_ltp_syscalls  failed

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[Bug 1895276] Re: shmctl04 from ubuntu_ltp_syscalls failed with X-aws + T-azure / 4.15

2021-06-21 Thread Guilherme G. Piccoli
Observed in T-4.15/Azure, cycle sru-20210531 .

** Summary changed:

- shmctl04 from ubuntu_ltp_syscalls failed with X-aws / 4.15
+ shmctl04 from ubuntu_ltp_syscalls failed with X-aws + T-azure / 4.15

** Tags added: sru-20210531

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Title:
  shmctl04 from ubuntu_ltp_syscalls failed with X-aws + T-azure / 4.15

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[Bug 1813878] Re: lxc test failed on Azure T-4.15

2021-06-21 Thread Guilherme G. Piccoli
Found on T-4.15/Azure, cycle sru-20210531 .

** Tags added: sru-20210531

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https://bugs.launchpad.net/bugs/1813878

Title:
  lxc test failed on Azure T-4.15

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