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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2014-01-15 06:43:39 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-03-19 17:17:22 -0700 |
| commit | c243e96335c56e56dcf6a00593104554fb06b689 (patch) | |
| tree | b1e4bdf0839e365490820b0090a9d793edbc4c06 /drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | |
| parent | i40e/i40evf: reduce context descriptors (diff) | |
| download | linux-dev-c243e96335c56e56dcf6a00593104554fb06b689.tar.xz linux-dev-c243e96335c56e56dcf6a00593104554fb06b689.zip | |
i40e: potential array underflow in i40e_vc_process_vf_msg()
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@oracle.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index b2da079cd696..02c11a7f7d29 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -1774,7 +1774,7 @@ 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; |