http://bugs.freedesktop.org/show_bug.cgi?id=24539

           Summary: radeon NULL pointer dereference with KMS and no AGP
                    bridge
           Product: DRI
           Version: DRI CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: [email protected]
        ReportedBy: [email protected]


On attempting to load the radeon driver with an AGP card (any radeon chipset)
and no valid AGP bridge driver, radeon_agp_init produces a Kernel Oops (Unable
to handle kernel NULL pointer dereference) upon attempting to determine if the
bridge is required.

This will prevent boot in a misconfigured system that loads the driver early
(ie. in initramfs or built into the kernel).

Trace is attached.


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