On Tue, Sep 1, 2015 at 11:27 PM, dann frazier <dann.fraz...@canonical.com> wrote: > 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.
I can't trigger that on mustang/merlin. And looks the kernel won't crash too when I run one 4.2 upstream kernel. But on wily, stress-ng often causes itself translation fault, see the report below: https://bugs.launchpad.net/ubuntu/+source/stress-ng/+bug/1495761 Thanks, > > -- > You received this bug notification because you are 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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1469859 Title: HP ProLiant m400: NULL pointer dereference PC is at ctx_sched_in+0xdc/0x30c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1469859/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
