On Sun, May 14, 2017 at 10:56 AM, Björn Töpel <bjorn.to...@gmail.com> wrote:
> From: Björn Töpel <bjorn.to...@intel.com>
>
> In f8b45b74cc62 ("i40e/i40evf: Use build_skb to build frames")
> i40e_build_skb updates the page_offset field with an incorrect offset,
> which can lead to data corruption. This patch updates page_offset
> correctly.
>
> Note that the bug only appears on architectures where PAGE_SIZE is
> 8192 or larger.
>
> Fixes: f8b45b74cc62 ("i40e/i40evf: Use build_skb to build frames")
> Signed-off-by: Björn Töpel <bjorn.to...@intel.com>Minor nit. I think i40evf has the same issue and requires the same fix. Can you add that to this patch and resubmit? Otherwise this fix looks good to me. > --- > drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c > b/drivers/net/ethernet/intel/i40e/i40e_txrx.c > index 29321a6167a6..cd894f4023b1 100644 > --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c > +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c > @@ -1854,7 +1854,8 @@ static struct sk_buff *i40e_build_skb(struct i40e_ring > *rx_ring, > #if (PAGE_SIZE < 8192) > unsigned int truesize = i40e_rx_pg_size(rx_ring) / 2; > #else > - unsigned int truesize = SKB_DATA_ALIGN(size); > + unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct > skb_shared_info)) + > + SKB_DATA_ALIGN(I40E_SKB_PAD + size); > #endif > struct sk_buff *skb; > > -- > 2.11.0 > > _______________________________________________ > Intel-wired-lan mailing list > intel-wired-...@osuosl.org > https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
