[Bug 87576] New: Null dereference in npramin_finit

* [Bug 87576] New: Null dereference in npramin_finit
@ 2014-12-22  6:07 bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
       [not found] ` <bug-87576-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
  0 siblings, 1 reply; 2+ messages in thread
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2014-12-22  6:07 UTC (permalink / raw)
  To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW

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https://bugs.freedesktop.org/show_bug.cgi?id=87576

            Bug ID: 87576
           Summary: Null dereference in npramin_finit
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: rjgleits-Bdlq13kUjeyLZ21kGMrzwg@public.gmane.org

Created attachment 111144
  --> https://bugs.freedesktop.org/attachment.cgi?id=111144&action=edit
fix null dereference oops in nouveau.ko

This problem manifests when chipset is < nv50. In this case, pramin_init
returns NULL. mthd->data is then set to this value in shadow_method. Later,
mthd-> data is passed as a parameter to pramin_fini. The result is a kernel
oops. The attached patch takes care of that.

Best Wishes,

Bob Gleitsmann

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