This bug was fixed in the package linux - 2.6.32-35.78
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linux (2.6.32-35.78) lucid-proposed; urgency=low
[Herton R. Krzesinski]
* Release Tracking Bug
- LP: #871899
[ Andrew Dickinson ]
* SAUCE: sched: Prevent divide by zero when cpu_power is 0
- LP: #614853
** Branch linked: lp:ubuntu/lucid-proposed/linux-ec2
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Title:
X freeze on i915_gem.c line 1478
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** Branch linked: lp:ubuntu/lucid-proposed/linux-mvl-dove
** Branch linked: lp:ubuntu/maverick-proposed/linux-mvl-dove
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Title:
X freeze on
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
lucid' to 'verification-done-lucid'.
If verification is not done by one week from today,
Yep, still fixed in 2.6.32-35.78 from -proposed. Thanks.
** Tags removed: verification-needed-lucid
** Tags added: verification-done-lucid
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Title:
Reapplied these to master-next:
drm/i915: Fix refleak during eviction.
drm/i915: Hold a reference to the object whilst unbinding the eviction list
drm/i915: Remove BUG_ON from i915_gem_evict_something
drm/i915: Periodically flush the active lists and requests
drm/i915/evict: Ensure we completely
** Changed in: linux (Ubuntu)
Status: Incomplete = In Progress
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Title:
X freeze on i915_gem.c line 1478
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** Also affects: linux (Ubuntu Lucid)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: In Progress = Fix Released
** Changed in: linux (Ubuntu Lucid)
Status: New = Fix Committed
** Changed in: linux (Ubuntu Lucid)
Assignee: (unassigned) = Seth
** Description changed:
+ SRU Justification
+
+ Impact: The i915 driver is not holding references to DRM objects during
+ eviction. Thus an object could be freed while i915 is still referencing
+ it, which results in a kernel BUG and an xserver freeze.
+
+ Fix: Backport of upstream fix to hold
Okay, I backported this fix plus e39a015 (the parts that weren't already
backported at least). The latter fixes leaks introduced by the former. A
test build is available at:
http://people.canonical.com/~sforshee/lp843904/linux-2.6.32-34.76~lp843904v201109121911/
Please test and report back
Yeah, seems to be fixed in your test build. At least, the image linked
above does not let X freeze, and no such lines in dmesg. Also I was able
to view several more huge pictures in Firefox which would previously
result in a freezing X. Thanks for the fix!
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It looks like we may need to backport this fix from upstream. I'll look
into the backport when I get time.
commit af6261031317f646d22f994c0b467521e47aa49f
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Mon Sep 20 10:31:40 2010 +0100
drm/i915: Hold a reference to the object whilst
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Title:
X freeze on i915_gem.c line 1478
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** Changed in: linux (Ubuntu)
Status: New = Confirmed
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Title:
X freeze on i915_gem.c line 1478
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