** Tags added: cscc
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while stressing network bonding
To manage notifications about this bug go to:
Since it's also in disco master-next, I set the overall ticket to 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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This bug was fixed in the package linux - 4.15.0-42.45
---
linux (4.15.0-42.45) bionic; urgency=medium
* linux: 4.15.0-42.45 -proposed tracker (LP: #1803592)
* [FEAT] Guest-dedicated Crypto Adapters (LP: #1787405)
- KVM: s390: reset crypto attributes for all vcpus
- KVM:
This bug was fixed in the package linux - 4.18.0-12.13
---
linux (4.18.0-12.13) cosmic; urgency=medium
* linux: 4.18.0-12.13 -proposed tracker (LP: #1802743)
* [FEAT] Guest-dedicated Crypto Adapters (LP: #1787405)
- s390/zcrypt: Add ZAPQ inline function.
- s390/zcrypt:
** Tags removed: verification-needed-cosmic
** Tags added: verification-done-cosmic
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while
** Tags removed: kernel-key
** Tags added: kernel-da-key
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while stressing network bonding
To
--- Comment From kieni...@de.ibm.com 2018-11-16 07:45 EDT---
Fix has been successfully verified by the SSC team.
With kernel 4.15.0-40.43 from proposed our test procedure no longer raises a
kernel panic or fails in any other way.
Thanks much for fixing
** Tags removed:
** Changed in: linux (Ubuntu)
Importance: High => Critical
** Changed in: linux (Ubuntu Bionic)
Importance: High => Critical
** Changed in: linux (Ubuntu Cosmic)
Importance: High => Critical
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This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
cosmic' to 'verification-done-cosmic'. If the problem still exists,
change the tag
** Changed in: linux (Ubuntu)
Status: In Progress => Fix Committed
** Changed in: ubuntu-z-systems
Status: In Progress => Fix Committed
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** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Cosmic)
Status: In Progress => Fix Committed
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** Changed in: linux (Ubuntu Cosmic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Cosmic)
Status: New => In Progress
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** Also affects: linux (Ubuntu Cosmic)
Importance: Undecided
Status: New
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while stressing
SRU submitted:
[SRU][Cosmic][Bionic][PATCH 0/6] Fixes for LP1797367
https://lists.ubuntu.com/archives/kernel-team/2018-November/096556.html
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** Description changed:
- == Comment: #0 - Athira Rajeev
+ == SRU Justification ==
+
+ While running a series of stress tests for network on a bond device on Ubuntu
18.04.1 with kernel 4.15.0-36.39,
+ kernel panic is observed (btw. also on non-bond devices).
+ This looks like a race between
The dump from the 'IBM Box' file share has a different md5 hash (and a slightly
different size) - compared to the one from the ftp server.
But this time I could successfully 'rearrange' (-R) the dump file.
Hence I replaced the the old file
** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
** Changed in: ubuntu-z-systems
Status: Confirmed => In Progress
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With more time spent on this, it feels like some question to be passed
along to my former colleagues. Unfortunately the dump does not contain
any data that is simple to track because the initial BUG() trigger
already ended by the time the final panic is done.
However debug_output() is rather
** Changed in: linux (Ubuntu Bionic)
Status: Triaged => In Progress
** Changed in: ubuntu-z-systems
Status: Triaged => Confirmed
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So with the script we are able to re-create the panic on one of our
systems. Which is good because I was not yet able to extract anything
from the uploaded dump (using makedumpfile to convert from kdump_flat
format seems to fail finding an end marker).
Generally from the data seen so far all
** Changed in: ubuntu-z-systems
Importance: High => Critical
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while stressing network bonding
--- Comment From heinz-werner_se...@de.ibm.com 2018-10-18 08:27 EDT---
Increased priority for getting thsi fixed very urgent. Ship issueMany thx
in advance.
** Tags removed: severity-high targetmilestone-inin---
** Tags added: severity-critical targetmilestone-inin1804
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The dump using 4.15.0-38 from proposed is now accessible (Canonical internal)
via my home (fheimes) at 'mombin':
$ ls PS27-JOHN-*.bin
PS27-JOHN-zSWTestAppliance-2018-10-16T15_07_56-AZIZ0104E-8196323d-3fcf-44d8-9b1a-bd1e6a694bad.bin
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Thanks for testing on 4.15.0-38 from proposed.
Requested the retrieval of the dump file ...
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while
We would like to know the results from kernel 4.15.0-38 from proposed,
since that comes with several patches on top.
If dumps from that kernel are available,
please upload to the ftp server (#5) and I make them internally available, too.
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Any update? We do have more dumps if needed.
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while stressing network bonding
To manage
I opened a RT ticket to retrieve the files.
They are now accessible (Canonical internal) via my home (fheimes) at 'mombin':
94293893 Oct 12 11:22
PM96-TESTREST-zSWTestAppliance-2018-10-08T06_50_42-AZIZ0104E-39181eaf-7093-455c-975e-f454936e1c92.bin
129272177 Oct 12 11:26
You may use apport (apport-cli / apport-bug)
and upload any data to this launchpad bug.
https://help.ubuntu.com/lts/serverguide/reporting-bugs.html.en
Alternatively you can do an (anonymous) ftp upload of very huge files
here: archive.admin.canonical.com
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The stack trace looks to indicate a debugfs read triggering an out of
bounds read against a kernel object backed by the slab. That is that
the read is offset into the object such that the attempted read would
have traversed onto the following object exposing kernel memory for an
unrelated item.
Has this been observed only with this kernel version (or not tried), Or
in other words did any 4.15 kernel not cause these issues.
Also we currently have the next scheduled kernel being in testing
(-proposed). It contains a bunch of accumulated stable updates, so it
would be good to see whether
** Changed in: ubuntu-z-systems
Status: New => Triaged
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Title:
Ubuntu 18.04.1 - [s390x] Kernel panic while stressing network bonding
To
** Changed in: linux (Ubuntu)
Importance: Undecided => Critical
** Tags added: kernel-key
** Changed in: linux (Ubuntu)
Importance: Critical => High
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Importance:
** Also affects: ubuntu-z-systems
Importance: Undecided
Status: New
** Changed in: ubuntu-z-systems
Importance: Undecided => High
** Changed in: ubuntu-z-systems
Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)
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