Ubuntu
kernel-package package

Ubuntu 17.04: kdump fails to capture vmcore when SMT is set to 1,2 or 4 on NV machine.

Bug #1664552 reported by bugproxy
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
kernel-package (Ubuntu)
New
Undecided
Taco Screen team

Bug Description

---Problem Description---

Ubuntu 17.04: kdump fails to capture vmcore when SMT is set to 1,2 or 4.

---Steps to Reproduce---

1. Install Ubuntu 17.04.
2. Configure kdump.
3. Trigger crash.
echo "c" > /proc/sysrq-trigger

"noirqdistrib reset_devices" needs to be passed to kdump kernel as
mentioned in Documentation/kdump/kdump.txt. Mirror the bug to Canonical
for passing this missing parameters to kdump kernel.

Revision history for this message
bugproxy (bugproxy) wrote : SMT=off

Default Comment by Bridge

tags: added: architecture-ppc64le bugnameltc-150594 severity-high targetmilestone-inin1704
Revision history for this message
bugproxy (bugproxy) wrote : console log when SMT=2

Default Comment by Bridge

Changed in ubuntu:
assignee: nobody → Taco Screen team (taco-screen-team)
affects: ubuntu → kernel-package (Ubuntu)
Revision history for this message
Michael Hohnbaum (hohnbaum) wrote : Re: [Bug 1664552] [NEW] Ubuntu 17.04: kdump fails to capture vmcore when SMT is set to 1, 2 or 4 on NV machine.

Leann,

The fix for this looks like a superset of the fix requested for
https://bugs.launchpad.net/bugs/1664545

Can you please have the Kernel team look at this.

                              Michael

On 02/14/2017 04:29 AM, Launchpad Bug Tracker wrote:
> bugproxy (bugproxy) has assigned this bug to you for Ubuntu:
>
> ---Problem Description---
>
> Ubuntu 17.04: kdump fails to capture vmcore when SMT is set to 1,2 or 4.
>
> ---Steps to Reproduce---
>
> 1. Install Ubuntu 17.04.
> 2. Configure kdump.
> 3. Trigger crash.
> echo "c" > /proc/sysrq-trigger
>
>
> "noirqdistrib reset_devices" needs to be passed to kdump kernel as
> mentioned in Documentation/kdump/kdump.txt. Mirror the bug to Canonical
> for passing this missing parameters to kdump kernel.
>
> ** Affects: ubuntu
> Importance: Undecided
> Assignee: Taco Screen team (taco-screen-team)
> Status: New
>
>
> ** Tags: architecture-ppc64le bugnameltc-150594 severity-high targetmilestone-inin1704

--
Michael Hohnbaum
OIL Program Manager
Power (ppc64el) Development Project Manager
Canonical, Ltd.

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