With the last update (and the patches already in eoan) this ticket can
be closed as Fix Released.
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
** Changed in: ubuntu-z-systems
Status: Fix Committed => Fix Released
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The fixes for Bionic and Disco have been released, as stated on the
stable update bugs mentioned on comment #50. Therefore I'm marking this
bug report manually as 'Fix Released'.
Thank you.
** Changed in: linux (Ubuntu Disco)
Status: Fix Committed => Fix Released
** Changed in: linux
** Description changed:
SRU Justification:
==
[Impact]
* The perf top tool hangs and shows error messages, like 'Not enough
memory for annotating'
[Fix]
* b9c0a64901d5bdec6eafd38d1dc8fa0e2974fccb b9c0a64 "perf annotate: Fix
s390 gap between kernel end
** Changed in: ubuntu-z-systems
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1828166
Title:
perf top problem on z with Ubuntu 18.04
Status
Note: The fixes for this problem were applied under a different bug
number via stable updates:
For Bionic:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1840520
For Disco: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1841994
** Changed in: linux (Ubuntu Bionic)
Status:
SRU request:
https://lists.ubuntu.com/archives/kernel-team/2019-August/103323.html
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Title:
perf top problem on z with Ubuntu 18.04
These patches have already been committed to Eoan (LP: #1841110).
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Committed
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** Description changed:
SRU Justification:
==
[Impact]
* The perf top tool hangs and shows error messages, like 'Not enough
memory for annotating'
[Fix]
* b9c0a64901d5bdec6eafd38d1dc8fa0e2974fccb b9c0a64 "perf annotate: Fix
s390 gap between kernel end
Hello IBM,
Thank you for the feedback. We will submit the patches for integration
into the next SRU cycle.
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Title:
perf top
Hello IBM,
I have built test kernels for Bionic and Disco with the patches
mentioned:
b9c0a64 perf annotate: Fix s390 gap between kernel end and module start
12a6d29 perf record: Fix module size on s390
For Disco, I have also backported the following, which seemed to be a
pre-req:
3376b6b7fb57
** Changed in: ubuntu-z-systems
Status: Triaged => In Progress
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Title:
perf top problem on z with Ubuntu 18.04
Status in
** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Disco)
Status: New => In Progress
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Disco)
Importance: Undecided => High
--
I tried if the two commits can be cleanly applied by cherry-picking them
from bionic-master-next (and disco-master-next), and it looks good (with
a little hick-up on disco).
I updated the SRU justification in the bug description and new test
packages will be built soon (thx klebers).
**
** Changed in: ubuntu-z-systems
Status: Incomplete => Triaged
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Title:
perf top problem on z with Ubuntu 18.04
Status in
Hi Thomas, thanks for looking into this and doing this analysis.
Sounds reasonable to bring it upstream first and do a backport afterwards.
Since 18.10/cosmic with kernel 4.18 is EOL in between, we just need to get it
into bionic 4.15 and disco 5.0 - but I assume you've meant that anyway ...
**
Hi Thomas,
The tarball with the sources I used to build linux
4.15.0-55.60+lp1828166.2 can be found here:
https://people.canonical.com/~ksouza/lp1828166/bionic/linux-
source-4.15.0.tar.bz2
md5sum:
58e725a4c20dcf3fb0b209e3d6155e74 linux-source-4.15.0.tar.bz2
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'apt-get source' should work - just double checked it here:
# just these two deb-src lines should be sufficient:
$ grep ^deb-src /etc/apt/sources.list
deb-src http://us.ports.ubuntu.com/ubuntu-ports/ bionic main
deb-src http://us.ports.ubuntu.com/ubuntu-ports/ bionic-updates main
$ apt-get
And afterwards you can get the package that contains perf like this:
$ dpkg -S $(which perf)
linux-tools-common: /usr/bin/perf
$ apt-get source linux-tools-common
For the linux-tools source package that fits to your running kernel, do:
apt-get source linux-tools-$(uname -r)
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Sorry, I missed comment #31, just saw now #32.
Please have a look here on how to install the build env. and the kernel sources:
https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel
Just notice that the deb line in the sources.list file is different for non-x86
(like s390x)
It must be:
deb-src
I can also confirm that the issue still exists, but only if I run perf top as
root or with sudo.
Running perf top it as regular user is fine - even w/o the patches packages!
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Hi Klaus,
The same version of perf is expected.
I was able to reproduce the issue and I can confirm that I see the same
behavior as you described even with the patched test kernel.
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Hello IBM,
I have built a kernel for tests with the patches mentioned in the
previous comment:
perf record: Fix s390 missing module symbol and warning for non-root users
perf machine: Read also the end of the kernel
perf machine: Update kernel map address and re-order properly
perf machine: Set
** Changed in: linux (Ubuntu Cosmic)
Status: In Progress => Invalid
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Title:
perf top problem on z with Ubuntu 18.04
Status
Hello Frank,
On 6/19/19 7:13 AM, Frank Heimes wrote:
> Just tried to cherry-pick 1) 6738028 and 2) ed9adb2 from 5.3-rc3 to bionic's
> master-next tree:
> git://kernel.ubuntu.com/ubuntu/ubuntu-bionic --branch master-next
> 1) applied cleanly, but 2) did not - I got 3 conflicts while
Just tried to cherry-pick 1) 6738028 and 2) ed9adb2 from 5.3-rc3 to bionic's
master-next tree:
git://kernel.ubuntu.com/ubuntu/ubuntu-bionic --branch master-next
1) applied cleanly, but 2) did not - I got 3 conflicts while cherry-picking
ed9adb2
Is there something still missing?
(I used bionic to
** Changed in: linux (Ubuntu)
Status: Fix Released => Confirmed
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Title:
perf top problem on z with Ubuntu 18.04
Status in
Thx for the confirmation
** Changed in: ubuntu-z-systems
Status: Triaged => Confirmed
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Title:
perf top problem on z with
Thx for the analysis and the sharing of the commit IDs for the two patches from
kernel 5.2-rc3 in comment #19.
Since you mentioned three patches in comment #18 I assume the 3rd one became
obsolete?
With that I assume that:
"perf record: Fix s390 missing module symbol and warning for non-root
** Changed in: ubuntu-z-systems
Status: Incomplete => Triaged
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Title:
perf top problem on z with Ubuntu 18.04
Status in
Changed to Incomplete while waiting for new analysis results.
** Changed in: ubuntu-z-systems
Status: In Progress => Incomplete
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Hi,
Can you please provide the output of 'uname -a'?
Also, on the original bug report it states that the issue is fixed with
the mentioned patch applied. On top of which kernel was this patch
applied and tested?
Thank you.
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Klaus,
Please download the new packages from the following URL:
https://people.canonical.com/~ksouza/lp1828166/bionic/lp/
Additionally to the linux-image and linux-modules packages, please install also:
linux-tools-common_4.15.0-49.53+lp1828166_all.deb
Hello Klaus,
The packages I provided indeed don't ship the perf binaries with it, my
apologies.
I'm building the packages again in another build environment which will
produce the perf files we need, I will post a link to the new packages
soon.
Thank you.
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@ Klaus: Did you tried the linux-tools-common from klebers link ?
https://people.canonical.com/~ksouza/lp1828166/bionic/
especially:
https://people.canonical.com/~ksouza/lp1828166/bionic/linux-tools-common_4.15.0-49.53+lp1828166_all.deb
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Looks like a dedicated linux-tool-common package is needed, because perf
too tight to the kernel ...
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Title:
perf top problem on z
Hi, perf should be in package linux-tools-common and each kernel versions has a
dedicated linux-tool-common) package version.
$ dpkg -S $(which perf)
linux-tools-common: /usr/bin/perf
But on disk it's usually in /usr/bin.
Please can you check if it's in with:
$ dpkg -L linux-tools-common | grep
** Changed in: ubuntu-z-systems
Status: Triaged => In Progress
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Title:
perf top problem on z with Ubuntu 18.04
Status in
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Changed in: linux (Ubuntu Cosmic)
Status: New => In Progress
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Hello IBM,
I have built test kernels with the requested patch applied which can be
found at:
Bionic:
https://people.canonical.com/~ksouza/lp1828166/bionic/
Cosmic:
https://people.canonical.com/~ksouza/lp1828166/cosmic/
Please note that at least linux-image- and linux-modules- need to be
** Description changed:
+ SRU Justification:
+ ==
+
+ [Impact]
+
+ * The perf top tool hangs and shows error messages, like 'Not enough
+ memory for annotating'
+
+ [Fix]
+
+ * edeb0c90df3581b821a764052d185df985f8b8dc edeb0c9 "perf tools: Stop
+ fallbacking to kallsyms for
** Also affects: linux (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New => Fix Released
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Hence, this needs to land in bionic (and cosmic) - disco (and eoan)
kernels are already > 4.20
** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-z-systems
Status: New => Triaged
** Changed in: ubuntu-z-systems
Importance: Undecided =>
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