kernel-packages team mailing list archive

[Ming Lei <1469859@xxxxxxxxxxxxxxxxxx>]

On Tue, Sep 1, 2015 at 11:27 PM, dann frazier
<dann.frazier@xxxxxxxxxxxxx> 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 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