[PATCH 5.10 305/518] wifi: ath11k: fix array out-of-bound access in SoC stats

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5.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Karthikeyan Periyasamy <quic_periyasa@xxxxxxxxxxx>

[ Upstream commit 69f253e46af98af17e3efa3e5dfa72fcb7d1983d ]

Currently, the ath11k_soc_dp_stats::hal_reo_error array is defined with a
maximum size of DP_REO_DST_RING_MAX. However, the ath11k_dp_process_rx()
function access ath11k_soc_dp_stats::hal_reo_error using the REO
destination SRNG ring ID, which is incorrect. SRNG ring ID differ from
normal ring ID, and this usage leads to out-of-bounds array access. To fix
this issue, modify ath11k_dp_process_rx() to use the normal ring ID
directly instead of the SRNG ring ID to avoid out-of-bounds array access.

Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
Link: https://patch.msgid.link/20240704070811.4186543-3-quic_periyasa@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wireless/ath/ath11k/dp_rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
index 6c4b84282e44c..720c94806e1a1 100644
--- a/drivers/net/wireless/ath/ath11k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
@@ -2621,7 +2621,7 @@ int ath11k_dp_process_rx(struct ath11k_base *ab, int ring_id,
 		if (push_reason !=
 		    HAL_REO_DEST_RING_PUSH_REASON_ROUTING_INSTRUCTION) {
 			dev_kfree_skb_any(msdu);
-			ab->soc_stats.hal_reo_error[dp->reo_dst_ring[ring_id].ring_id]++;
+			ab->soc_stats.hal_reo_error[ring_id]++;
 			continue;
 		}
 
-- 
2.43.0







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