com.apple.ATIRadeonX2600: NULL pointer dereference in kernel mode

Originator:morpheus
Number:rdar://8160934 Date Originated:06-Jul-2010 10:12 AM
Status:Duplicate/7623551 Resolved:07-Jul-2010 11:08 PM
Product:Mac OS X Product Version:10.6.4
Classification:Crash/Hang/Data Loss Reproducible:Rarely
 
Summary:
System encountered a kernel panic after waking up display from sleep. The foreground process was WindowServer and it was stuck while rendering a builtin screensaver (RSS Visualizer).

Steps to Reproduce:
Currently uknown, but it seems like an OpenGL-related problem.

Expected Results:
Display should wake up and operations should continue as normal

Actual Results:
WindowServer got stuck and caused a subsequent kernel panic

Regression:
Similar behavior (WindowServer stuck, but no kernel panic) was observed in 10.6.3. 10.6.2 is not affected.

Notes:
Similar errors have been happening for quite some time after upgrading to 10.6.3: WindowServer got stuck in a random call inside ATIRadeonX2000GLDriver.bundle, but it was still possible to ssh in and perform a clean shutdown of the system.
Multiple Apple Hardware Test cycles didn't detect any hardware problem.

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