The commit 92fb1db26eef "mm/page_idle.c: skip offline pages" is upstream with
5.8 (rc-1) (also tagged with next-20200820).
Hence it's in groovy (since Ubuntu-5.8.0-13.14) and in hirsute
(Ubuntu-5.8.0-30.32+21.04.1).
It's not in focal (also not via upstream stable updates).
Hence updating only G and H to Fix Released.
** Changed in: linux (Ubuntu Hirsute)
Assignee: Skipper Bug Screeners (skipper-screen-team) => (unassigned)
** Changed in: linux (Ubuntu Hirsute)
Status: New => Fix Released
** Changed in: linux (Ubuntu Groovy)
Status: New => Fix Released
** Changed in: ubuntu-z-systems
Status: New => Triaged
** Summary changed:
- [UBUNUT 20.04] s390: dbginfo.sh triggers kernel panic, reading from
/sys/kernel/mm/page_idle/bitmap
+ s390: dbginfo.sh triggers kernel panic, reading from
/sys/kernel/mm/page_idle/bitmap
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https://bugs.launchpad.net/bugs/1904884
Title:
s390: dbginfo.sh triggers kernel panic, reading from
/sys/kernel/mm/page_idle/bitmap
Status in Ubuntu on IBM z Systems:
Triaged
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
New
Status in linux source package in Focal:
New
Status in linux source package in Groovy:
Fix Released
Status in linux source package in Hirsute:
Fix Released
Bug description:
System hangs on dbginfo.sh script execution.
Solution:
Commit 92fb1db26eef ("mm/page_idle.c: skip offline pages")
Included upstream since kernel v5.8, so it is already included in
Ubuntu 20.10, but not in 20.04 and earlier.
Commit 92fb1db26eef ("mm/page_idle.c: skip offline pages") applies cleanly on
ubuntu-focal, but not on ubuntu-bionic.
Adjustment / backport for bionic should be trivial, but it is not IBM
code and therefore the backport will be requested here by Canonical.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/1904884/+subscriptions
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