*** This bug is a duplicate of bug 1877533 ***
https://bugs.launchpad.net/bugs/1877533
This is now fixed in jammy and onward ... (LP#1877533)
** Changed in: linux (Ubuntu)
Status: New => Fix Released
** Changed in: linux (Ubuntu)
Assignee: Canonical Kernel Team (canonical-kernel-team) => (unassigned)
** Changed in: ubuntu-z-systems
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1946463
Title:
Ubuntu 20.04.3 default crashkernel size insufficient for kdump
Status in Ubuntu on IBM z Systems:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Bug description:
---Problem Description---
Unable to take a dump using kdump on host, service is enabled and correctly
configured.
"[ 6.110044] Kernel panic - not syncing: System is deadlocked on memory
---uname output---
Linux ilzlnx3.tuc.stglabs.ibm.com 5.4.0-81-generic #91-Ubuntu SMP Thu Jul 15
19:07:49 UTC 2021 s390x s390x s390x GNU/Linux
Machine Type = S/390
---System Hang---
Once the kdump is unsuccessful, I have to load it from the HMC.
---Debugger---
A debugger is not configured
---Steps to Reproduce---
Trigger kdump with a crash by:
sysctl -w kernel.sysrq=1
echo c > /proc/sysrq-trigger
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