Bug 16407
| Summary: | Crash after memory fills with cache (GFP_MOVEABLE related corruptions) | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Wouter Mense (woutermense) |
| Component: | Video(DRI - Intel) | Assignee: | Chris Wilson (chris) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | airlied, chris, daniel, eric, jbarnes |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.34 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
/var/log/messages
Repeat unbind during free. Prevent the VM from swapping out active GTT pages. |
||
Recategorised to DRI. i915_gem_shrink() has got hold of a bad pointer. Any other symptoms that might give a clue to the memory corruption? Is this before or after: commit 985b823b919273fe1327d56d2196b4f92e5d0fae Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Fri Jul 2 10:04:42 2010 +1000 drm/i915: fix hibernation since i915 self-reclaim fixes i.e. 2.6.35-rc4 or later? It is kernel-desktop-2.6.34-12.3.x86_64.rpm from openSUSE 11.3 Created attachment 27229 [details]
Repeat unbind during free.
Aside from the memory corruption issues that were identified upon hibernation, I've found a potential use-after-free.
Created attachment 31522 [details]
Prevent the VM from swapping out active GTT pages.
It looks like we do not prevent the VM from swapping out pages in use by the GPU, which is bad and leads to garbage being executed by the GPU and the GPU writing over top of random pages.
Any new sightings on recent kernels? I guess not otherwise we would have heard from Wouter. :) |
Created attachment 27133 [details] /var/log/messages After running for a while, memory fills with cache, all seems normal until 100% is hit, then crash.