Message ID | 20180116102250.22914-1-colin.king@canonical.com |
---|---|
State | Accepted, archived |
Delegated to: | David Miller |
Headers | show |
Series | bnxt_en: don't update cpr->rx_bytes with uninitialized length len | expand |
On Tue, Jan 16, 2018 at 2:22 AM, Colin King <colin.king@canonical.com> wrote: > From: Colin Ian King <colin.king@canonical.com> > > Currently in the cases where cmp_type == CMP_TYPE_RX_L2_TPA_START_CMP or > CMP_TYPE_RX_L2_TPA_END_CMP the exit path updates cpr->rx_bytes with an > uninitialized length len. Fix this by adding a new exit path that does > not update the cpr stats with the bogus length len and remove the unused > label next_rx_no_prod. > > Detected by CoverityScan, CID#1463807 ("Uninitialized scalar variable") > Fixes: 6a8788f25625 ("bnxt_en: add support for software dynamic interrupt moderation") > > Signed-off-by: Colin Ian King <colin.king@canonical.com> Thanks. Acked-by: Michael Chan <michael.chan@broadcom.com>
From: Colin King <colin.king@canonical.com> Date: Tue, 16 Jan 2018 10:22:50 +0000 > From: Colin Ian King <colin.king@canonical.com> > > Currently in the cases where cmp_type == CMP_TYPE_RX_L2_TPA_START_CMP or > CMP_TYPE_RX_L2_TPA_END_CMP the exit path updates cpr->rx_bytes with an > uninitialized length len. Fix this by adding a new exit path that does > not update the cpr stats with the bogus length len and remove the unused > label next_rx_no_prod. > > Detected by CoverityScan, CID#1463807 ("Uninitialized scalar variable") > Fixes: 6a8788f25625 ("bnxt_en: add support for software dynamic interrupt moderation") > Signed-off-by: Colin Ian King <colin.king@canonical.com> Applied, thanks.
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index cf6ebf1e324b..6b2a7fe0dbde 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1510,7 +1510,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_napi *bnapi, u32 *raw_cons, (struct rx_tpa_start_cmp_ext *)rxcmp1); *event |= BNXT_RX_EVENT; - goto next_rx_no_prod; + goto next_rx_no_prod_no_len; } else if (cmp_type == CMP_TYPE_RX_L2_TPA_END_CMP) { skb = bnxt_tpa_end(bp, bnapi, &tmp_raw_cons, @@ -1526,7 +1526,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_napi *bnapi, u32 *raw_cons, rc = 1; } *event |= BNXT_RX_EVENT; - goto next_rx_no_prod; + goto next_rx_no_prod_no_len; } cons = rxcmp->rx_cmp_opaque; @@ -1644,9 +1644,10 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_napi *bnapi, u32 *raw_cons, rxr->rx_prod = NEXT_RX(prod); rxr->rx_next_cons = NEXT_RX(cons); -next_rx_no_prod: cpr->rx_packets += 1; cpr->rx_bytes += len; + +next_rx_no_prod_no_len: *raw_cons = tmp_raw_cons; return rc;