Sorry, I missed the request for more information. I retested yesterday, and it is still possible to crash the system with the above stress-ng command 4.2.0-6.6 from ppa:canonical-kernel-team/ppa. In fact, it seems to be 100% reproducible in just seconds. I'm no longer seeing the NULL pointer dereference - or any additional information on the console - but that could just be that the console is running too slow. The system no longer responds to pings - so I don't believe it is just overloaded.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1469859 Title: HP ProLiant m400: NULL pointer dereference PC is at ctx_sched_in+0xdc/0x30c Status in linux package in Ubuntu: Incomplete Bug description: [Impact] A heavily loaded system can lead to a kernel crash. [Test Case] while :; do stress-ng --all 64 -t 600 -v; done To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1469859/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp