openwrt/package/kernel/mac80211/patches/ath11k/0070-wifi-ath-work-around-false-positive-stringop-overrea.patch

From 695df2f417d25202bdac9cde3c82d2acb6492b4d Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 5 May 2023 16:11:25 +0300
Subject: [PATCH] wifi: ath: work around false-positive stringop-overread
 warning

In a rare arm64 randconfig build, I got multiple warnings for ath11k
and ath12k:

In function 'ath11k_peer_assoc_h_ht',
    inlined from 'ath11k_peer_assoc_prepare' at drivers/net/wireless/ath/ath11k/mac.c:2665:2:
drivers/net/wireless/ath/ath11k/mac.c:1709:13: error: 'ath11k_peer_assoc_h_ht_masked' reading 10 bytes from a region of size 0 [-Werror=stringop-overread]
 1709 |         if (ath11k_peer_assoc_h_ht_masked(ht_mcs_mask))
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This happens whenever gcc-13 fails to inline one of the functions
that take a fixed-length array argument but gets passed a pointer.

Change these functions to all take a regular pointer argument
instead.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230417205447.1800912-1-arnd@kernel.org
---
 drivers/net/wireless/ath/ath11k/mac.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -433,7 +433,7 @@ u8 ath11k_mac_bitrate_to_idx(const struc
 }
 
 static u32
-ath11k_mac_max_ht_nss(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
+ath11k_mac_max_ht_nss(const u8 *ht_mcs_mask)
 {
 	int nss;
 
@@ -445,7 +445,7 @@ ath11k_mac_max_ht_nss(const u8 ht_mcs_ma
 }
 
 static u32
-ath11k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
+ath11k_mac_max_vht_nss(const u16 *vht_mcs_mask)
 {
 	int nss;
 
@@ -457,7 +457,7 @@ ath11k_mac_max_vht_nss(const u16 vht_mcs
 }
 
 static u32
-ath11k_mac_max_he_nss(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+ath11k_mac_max_he_nss(const u16 *he_mcs_mask)
 {
 	int nss;
 
@@ -1651,7 +1651,7 @@ static void ath11k_peer_assoc_h_rates(st
 }
 
 static bool
-ath11k_peer_assoc_h_ht_masked(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
+ath11k_peer_assoc_h_ht_masked(const u8 *ht_mcs_mask)
 {
 	int nss;
 
@@ -1663,7 +1663,7 @@ ath11k_peer_assoc_h_ht_masked(const u8 h
 }
 
 static bool
-ath11k_peer_assoc_h_vht_masked(const u16 vht_mcs_mask[])
+ath11k_peer_assoc_h_vht_masked(const u16 *vht_mcs_mask)
 {
 	int nss;
 
@@ -2058,7 +2058,7 @@ static u16 ath11k_peer_assoc_h_he_limit(
 }
 
 static bool
-ath11k_peer_assoc_h_he_masked(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+ath11k_peer_assoc_h_he_masked(const u16 *he_mcs_mask)
 {
 	int nss;