c96f5471ce7d and its following fix has been applied to Bionic.
** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
** Changed in: linux (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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This bug was fixed in the package linux - 4.13.0-38.43
---
linux (4.13.0-38.43) artful; urgency=medium
* linux: 4.13.0-38.43 -proposed tracker (LP: #1755762)
* Servers going OOM after updating kernel from 4.10 to 4.13 (LP: #1748408)
- i40e: Fix memory leak related filter
** Tags removed: verification-needed-artful
** Tags added: verification-done-artful
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https://bugs.launchpad.net/bugs/1747769
Title:
Cherry pick c96f5471ce7d for delayacct
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-
artful' to 'verification-done-artful'. If the problem still exists,
change the tag
** Changed in: linux (Ubuntu Artful)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1747769
Title:
Cherry pick c96f5471ce7d for delayacct fix
SRU request submitted:
https://lists.ubuntu.com/archives/kernel-team/2018-February/090261.html
** Description changed:
+ == SRU Justification ==
+ Mainline commit e33a9bba85a8 introduced a regression in v4.11-rc1. This
regression
+ caused delayacct_blkio_end() to be called by try_to_wake_up().
The attached file 'Command output' contains the same terminal output as
is pasted in the comment, but whitespace hasn't been munged.
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# uname -a; dd if=/dev/xvda iflag=direct bs=16384 of=/dev/null & DD_PID=$!;
sleep 1 && ./getdelays -di -p $DD_PID; kill $DD_PID; wait
Linux hostname-redacted 4.13.0-32-generic #35~lp1747769 SMP Thu Feb 8 17:37:46
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
[1] 9578
print delayacct stats ON
printing
Yes, this build fixes the bug.
# uname -a; dd if=/dev/xvda iflag=direct bs=16384 of=/dev/null & DD_PID=$!;
sleep 1 && ./getdelays -di -p $DD_PID; kill $DD_PID; wait
Linux hostname-redacted 4.13.0-32-generic #35~lp1747769 SMP Thu Feb 8 17:37:46
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
[1] 9578
I built a test kernel with commit c96f5471ce7d. The test kernel can be
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1747769
Can you test this kernel and see if it resolves this bug?
Note, to test this kernel, you need to install both the linux-image and
linux-image-extra .deb
** Changed in: linux (Ubuntu Artful)
Status: New => In Progress
** Changed in: linux (Ubuntu Artful)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Artful)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu)
Assignee:
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
** Also affects: linux (Ubuntu Artful)
Importance: Undecided
Status: New
** Tags added: artful kernel-da-key
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I think logfiles are irrelevant to this cherry-pick request.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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