If "vf_id" is smaller than hw->func_caps.vf_base_id then we leads to an
array underflow of the pf->vf[] array.
Fixes: 7efa84b7abc1 ('i40e: support VFs on PFs other than 0')
Signed-off-by: Dan Carpenter <[email protected]>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 55ec2db71fa1..89482a078e9d 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1698,7 +1698,7 @@ int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id,
u32 v_opcode,
u32 v_retval, u8 *msg, u16 msglen)
{
struct i40e_hw *hw = &pf->hw;
- int local_vf_id = vf_id - hw->func_caps.vf_base_id;
+ unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id;
struct i40e_vf *vf;
int ret;
------------------------------------------------------------------------------
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