On Tue, Jun 16, 2026 at 2:09 AM Lijo Lazar <[email protected]> wrote: > > Avoid out-of-bounds xcp[] access, e.g. when xcp_id is > AMDGPU_XCP_NO_PARTITION. > > Signed-off-by: Lijo Lazar <[email protected]>
Acked-by: Alex Deucher <[email protected]> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c > b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c > index 389f69c7d5c3..14cef0264c17 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c > @@ -475,7 +475,8 @@ void amdgpu_xcp_release_sched(struct amdgpu_device *adev, > sched = entity->entity.rq->sched; > if (drm_sched_wqueue_ready(sched)) { > ring = to_amdgpu_ring(entity->entity.rq->sched); > - atomic_dec(&adev->xcp_mgr->xcp[ring->xcp_id].ref_cnt); > + if (ring->xcp_id < MAX_XCP) > + atomic_dec(&adev->xcp_mgr->xcp[ring->xcp_id].ref_cnt); > } > } > > -- > 2.49.0 >
