Bug 43704

Summary: X crashes with libdrm master
Product: xorg Reporter: Cyril Brulebois <kibi>
Component: Driver/intelAssignee: Chris Wilson <chris>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium CC: kibi
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Whole dmesg.
none
Compressed i915_error_state.
none
Whole 0/ directory from debugfs. none

Description Cyril Brulebois 2011-12-10 17:24:15 UTC 
Created attachment 54308 [details]
Whole dmesg.

Hi,

somewhat related to #43554 and <http://bugs.debian.org/651316>: I'm getting an X crash and a hung GPU (just by running vlc or mplayer on a random video) with the following components:
 - Linux kernel 3.2.0-rc4-amd64
 - libdrm git master (dd9a5b4f7fb07c78db4e7481bedca1b981030e3f)
 - xf86-video-intel git master (b5a6bc9e33a2797c926969e1f98b4a9a796248c5)
 - patched libva (https://bugs.freedesktop.org/show_bug.cgi?id=43554#c3);
   I think Chris mentioned on IRC this patch might need some extra hunks,
   but I don't think it's OK for the GPU to hang, so I'm reporting this bug.

I'll be attaching dmesg, i915_error_state, and the whole parent 0/ directory.
Comment 1 Cyril Brulebois 2011-12-10 17:25:40 UTC 
Created attachment 54309 [details]
Compressed i915_error_state.
Comment 2 Cyril Brulebois 2011-12-10 17:26:44 UTC 
Created attachment 54310 [details]
Whole 0/ directory from debugfs.
Comment 3 Chris Wilson 2011-12-10 17:42:06 UTC 
commit eb859f644633ee716083d253a5b7ff95163380e5
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sun Dec 11 01:34:05 2011 +0000

    uxa/video: Correct the offset of the binding table in the surface buffer
    
    The binding table is intended to be after all the surface descriptions,
    so make sure we write it with the appropriate offset into the buffer.
    
    Fixes regression from 699888a64 (uxa/video: Use the common bo
    allocations and upload)
    
    Reported-by: Cyril Brulebois <kibi@debian.org>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43704
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Comment 4 Chris Wilson 2011-12-10 17:43:04 UTC 
The backtrace from the crash might be useful as well, even in the event of a calamity we shouldn't crash.
Comment 5 Cyril Brulebois 2011-12-10 17:52:13 UTC 
Fixed indeed, thanks!
Comment 6 Cyril Brulebois 2011-12-11 05:53:00 UTC 
Oops, sorry for the UNCONFIRMED status, let's go back to RESOLVED/FIXED.

As discussed on IRC: without that fix, the server isn't actually crashing, only gnome-shell/session is (hung GPU is something gnome-s* doesn't like).

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