This bug was erroneously marked for verification in bionic; verification
is not required and verification-needed-bionic is being removed.
** Tags added: verification-done-bionic
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** Tags removed: verification-needed-bionic
** Tags added: kernel-fixup-verification-needed-bionic
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https://bugs.launchpad.net/bugs/1783651
Title:
Please enable
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 was fixed in the package linux - 4.18.0-8.9
---
linux (4.18.0-8.9) cosmic; urgency=medium
* linux: 4.18.0-8.9 -proposed tracker (LP: #1791663)
* Cosmic update to v4.18.7 stable release (LP: #1791660)
- rcu: Make expedited GPs handle CPU 0 being offline
- net:
** Changed in: linux (Ubuntu Cosmic)
Status: In Progress => Fix Committed
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Title:
Please enable CONFIG_PAGE_POISONING
Patch sent to kernel team mailing list
** Changed in: linux (Ubuntu Cosmic)
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: linux (Ubuntu Cosmic)
Status: Confirmed => In Progress
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I've built and tested 4.15 and the latest 4.18 with the following
configs:
CONFIG_PAGE_POISONING=y
CONFIG_PAGE_POISONING_ZERO=y
CONFIG_PAGE_POISONING_NO_SANITY=y
Attached is a libreoffice spreadsheet with the test results comparing
kernels without the config, with the config and with the config
** Changed in: linux (Ubuntu Cosmic)
Assignee: (unassigned) => Colin Ian King (colin-king)
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https://bugs.launchpad.net/bugs/1783651
Title:
Please enable
** Tags added: cosmic kernel-da-key
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Also affects: linux (Ubuntu Cosmic)
Importance: Medium
Status: Confirmed
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** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1783651
Title:
Please enable CONFIG_PAGE_POISONING
Status in linux
To clarify, I'm suggesting:
CONFIG_PAGE_POISONING=y
CONFIG_PAGE_POISONING_ZERO=y
CONFIG_PAGE_POISONING_NO_SANITY=y
this should have no impact on regular boots, and if someone boots with
"page_poison=1" then they get page wiping when page_alloc pages are
freed (and then GFP_ZERO is a no-op since
Oh no, leave CONFIG_PAGE_POISONING_NO_SANITY=y. Things get REALLY slow
without that, and the default kernel is built with hibernation, so I
would expect to do =y for that option.
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I've taken a quick look and I believe that the current upstream code
matches Kees' description.
Kees didn't mention it but I suspect that he also wants
CONFIG_PAGE_POISONING_NO_SANITY to be 'n' where possible when
CONFIG_HIBERNATION isn't selected.
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