kernel: drm/amdgpu: the warning dereferencing obj for nbio_v7_4

A flaw was found in the Linux kernel's drm/amdgpu component. A local attacker with low privileges could trigger a null pointer dereference by interacting with the nbiov74 functionality when the rasmanager object is null. This could lead to a system crash, resulting in a denial of service...

drm/amdgpu: the warning dereferencing obj for nbio_v7_4

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