drm/fbdev: Return -EBUSY when oopsing
Bug #1520427 reported by
XiongZhang
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Vivid |
Fix Released
|
Medium
|
Unassigned | ||
Wily |
Fix Released
|
Medium
|
Unassigned | ||
Xenial |
Fix Released
|
Medium
|
Unassigned |
Bug Description
Issue:
Between upstream kernel v3.19 to v4.2,when Intel SMEP/SMAP protection was triggered by some wild function call or data access, the screen would be frozen and never come back,but the system does not hang.
Generally, an SMEP/SMAP violation should cause the involved process killed, an oops from page fault exception generated to the syslog, and the system survived.
Fix:
One patch from 4.3 kernel fix this issue
commit c50bfd08d60cefb
Author: Daniel Vetter <email address hidden>
Date: Tue Jul 28 13:18:40 2015 +0200
drm/fbdev: Return -EBUSY when oopsing
Related branches
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
status: | Incomplete → Triaged |
Changed in linux (Ubuntu Wily): | |
status: | New → Triaged |
Changed in linux (Ubuntu Vivid): | |
status: | New → Triaged |
Changed in linux (Ubuntu Wily): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Vivid): | |
importance: | Undecided → Medium |
tags: | added: vivid wily xenial |
Changed in linux (Ubuntu Vivid): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Wily): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Xenial): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Vivid): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu Wily): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu Xenial): | |
status: | Triaged → In Progress |
status: | In Progress → Confirmed |
Changed in linux (Ubuntu Vivid): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Wily): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-vivid verification-done-wily removed: verification-needed-vivid verification-needed-wily |
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This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1520427
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.