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From: Taehee Yoo <ap420073@gmail.com>
To: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
	edumazet@google.com, andrew+netdev@lunn.ch,
	netdev@vger.kernel.org, michael.chan@broadcom.com,
	pavan.chebbi@broadcom.com
Cc: ap420073@gmail.com, somnath.kotur@broadcom.com
Subject: [PATCH net] eth: bnxt: fix out-of-range access of vnic_info array
Date: Sun, 16 Mar 2025 02:58:37 +0000	[thread overview]
Message-ID: <20250316025837.939527-1-ap420073@gmail.com> (raw)

The bnxt_queue_{start | stop}() access vnic_info as much as allocated,
which indicates bp->nr_vnics.
So, it should not reach bp->vnic_info[bp->nr_vnics].

Fixes: 661958552eda ("eth: bnxt: do not use BNXT_VNIC_NTUPLE unconditionally in queue restart logic")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 55f553debd3b..0ddc3d41e2d8 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -15651,7 +15651,7 @@ static int bnxt_queue_start(struct net_device *dev, void *qmem, int idx)
 	cpr = &rxr->bnapi->cp_ring;
 	cpr->sw_stats->rx.rx_resets++;
 
-	for (i = 0; i <= bp->nr_vnics; i++) {
+	for (i = 0; i < bp->nr_vnics; i++) {
 		vnic = &bp->vnic_info[i];
 
 		rc = bnxt_hwrm_vnic_set_rss_p5(bp, vnic, true);
@@ -15679,7 +15679,7 @@ static int bnxt_queue_stop(struct net_device *dev, void *qmem, int idx)
 	struct bnxt_vnic_info *vnic;
 	int i;
 
-	for (i = 0; i <= bp->nr_vnics; i++) {
+	for (i = 0; i < bp->nr_vnics; i++) {
 		vnic = &bp->vnic_info[i];
 		vnic->mru = 0;
 		bnxt_hwrm_vnic_update(bp, vnic,
-- 
2.34.1


             reply	other threads:[~2025-03-16  2:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-16  2:58 Taehee Yoo [this message]
2025-03-16 23:03 ` [PATCH net] eth: bnxt: fix out-of-range access of vnic_info array Michael Chan
2025-03-21 20:20 ` patchwork-bot+netdevbpf

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