Invalid EA on pre 4.9 kernels
Bug #1700980 reported by
bugproxy
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| The Ubuntu-power-systems project |
Fix Released
|
Medium
|
Canonical Kernel Team | ||
| linux (Ubuntu) |
Fix Released
|
Medium
|
Joseph Salisbury | ||
| Xenial |
Fix Released
|
Medium
|
Joseph Salisbury | ||
Bug Description
== Comment: #0 - Breno Leitao <email address hidden> - 2017-06-28 08:00:40 ==
When a process accesses an invalid EA it results in a SEGV signal being
sent to the process, which typically results in the process being
killed. Process death isn't instantaneous however, the process may catch
the SEGV signal and continue somehow, or the kernel may start writing a
core dump for the process, either of which means it's possible for the
process to be preempted while its processing the SEGV but before it's
been killed.
We need to have this fix on kernel 4.4 and 4.8:
| tags: | added: architecture-ppc64le bugnameltc-156112 severity-medium targetmilestone-inin--- |
| Changed in ubuntu: | |
| assignee: | nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) |
| affects: | ubuntu → linux (Ubuntu) |
| Changed in ubuntu-power-systems: | |
| assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
| tags: | added: kernel-da-key |
| Changed in linux (Ubuntu): | |
| status: | New → Triaged |
| importance: | Undecided → Medium |
| Changed in ubuntu-power-systems: | |
| status: | New → Triaged |
Revision history for this message
| Joseph Salisbury (jsalisbury) wrote | #1 |
| Changed in linux (Ubuntu Xenial): | |
| importance: | Undecided → Medium |
| status: | New → Triaged |
| status: | Triaged → Fix Committed |
| Changed in linux (Ubuntu): | |
| status: | Triaged → Fix Committed |
| Changed in ubuntu-power-systems: | |
| status: | Triaged → Fix Committed |
| Changed in linux (Ubuntu Xenial): | |
| assignee: | nobody → Joseph Salisbury (jsalisbury) |
| Changed in linux (Ubuntu): | |
| assignee: | Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) → Joseph Salisbury (jsalisbury) |
| Changed in ubuntu-power-systems: | |
| importance: | Undecided → Medium |
| tags: | added: triage-g |
| Changed in ubuntu-power-systems: | |
| status: | Fix Committed → Fix Released |
| Changed in linux (Ubuntu): | |
| status: | Fix Committed → Fix Released |
| Changed in linux (Ubuntu Xenial): | |
| status: | Fix Committed → Fix Released |
| tags: |
added: targetmilestone-inin16043 removed: targetmilestone-inin--- |
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The following commit is now is the Xenial master-next repo:
commit 2ff75eca6b58008
Author: Michael Ellerman <email address hidden>
Date: Thu Jun 22 16:52:51 2017 +1000
powerpc/slb: Force a full SLB flush when we insert for a bad EA