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commit7838fb5f11upstream. Commitb61badd20b("drm/amdgpu: fix usage slab after free") reordered when amdgpu_fence_driver_sw_fini() was called after that patch, amdgpu_fence_driver_sw_fini() effectively became a no-op as the sched entities we never freed because the ring pointers were already set to NULL. Remove the NULL setting. Reported-by: Lin.Cao <lincao12@amd.com> Cc: Vitaly Prosyak <vitaly.prosyak@amd.com> Cc: Christian König <christian.koenig@amd.com> Fixes:b61badd20b("drm/amdgpu: fix usage slab after free") Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commita525fa37aa) Cc: stable@vger.kernel.org [ Adapt to conditional check ] Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>