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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2014-01-15 06:43:39 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 10:28:18 -0700 |
| commit | 8a255ad5da168d12278f6a59bb2727ca07416c9d (patch) | |
| tree | ba4750db86f90508d91b71f9628dee4c371d3c6f /drivers/net/ethernet/intel | |
| parent | cd3750a8e7a512616c64c729a8de4d4d0bd69b7e (diff) | |
| download | linux-stable-8a255ad5da168d12278f6a59bb2727ca07416c9d.tar.gz linux-stable-8a255ad5da168d12278f6a59bb2727ca07416c9d.tar.bz2 linux-stable-8a255ad5da168d12278f6a59bb2727ca07416c9d.zip | |
i40e: potential array underflow in i40e_vc_process_vf_msg()
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@oracle.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ethernet/intel')
| -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 b9d1c1c8ca5a..178506a201d5 100644 --- 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_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; |