3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit c243e96335c56e56dcf6a00593104554fb06b689 upstream.
If "vf_id" is smaller than hw->func_caps.vf_base_id then it leads to
an array underflow of the pf->vf[] array. This is unlikely to happen
unless the hardware is bad, but it's a small change and it silences a
static checker warning.
Fixes: 7efa84b7abc1 ('i40e: support VFs on PFs other than 0')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Tested-by: Sibai Li <sibai.li@xxxxxxxxx>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1776,7 +1776,7 @@ int i40e_vc_process_vf_msg(struct i40e_p
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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