[PATCH] drm/amdgpu: bounds check xcp ip block index

[Lijo Lazar]

Check out of range values for ip block.

Signed-off-by: Lijo Lazar <lijo.la...@amd.com>
---
 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 d0d494e00cfe..88e6eab91bc6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
@@ -381,7 +381,8 @@ int amdgpu_xcp_get_inst_details(struct amdgpu_xcp *xcp,
                                enum AMDGPU_XCP_IP_BLOCK ip,
                                uint32_t *inst_mask)
 {
-       if (!xcp->valid || !inst_mask || !(xcp->ip[ip].valid))
+       if (!xcp->valid || !inst_mask || ip >= AMDGPU_XCP_MAX_BLOCKS ||
+           !(xcp->ip[ip].valid))
                return -EINVAL;
 
        *inst_mask = xcp->ip[ip].inst_mask;
-- 
2.49.0