[Nouveau] [Bug 87576] New: Null dereference in npramin_finit

[bugzilla-daemon at freedesktop.org]

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 at lists.freedesktop.org
          Reporter: rjgleits at bellsouth.net

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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