Public bug reported: ---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 *Additional Instructions for vanessa.ba...@ibm.com , finne...@us.ibm.com: -Post a private note with access information to the machine that the bug is occuring on. ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Skipper Bug Screeners (skipper-screen-team) Status: New ** Tags: architecture-s39064 bugnameltc-194306 severity-high targetmilestone-inin20044 ** Tags added: architecture-s39064 bugnameltc-194306 severity-high targetmilestone-inin20044 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946463 Title: Ubuntu20.04.3 default crashkernel size insufficient for kdump To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1946463/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs