From 116c6de724092227375371b4d3f5007d3f335008 Mon Sep 17 00:00:00 2001
From: Sultan Qasim Khan <sultan.qasimkhan@nccgroup.com>
Date: Thu, 14 Mar 2024 09:16:56 -0400
Subject: [PATCH] ieee80211: quash more ubsan warnings

Seems it doesn't like indexing into zero length arrays
either, it only allows C99 flexible array members.

Fixes warnings like:
UBSAN: array-index-out-of-bounds in /var/lib/dkms/rtl88x2bu/5.13.1/build/os_dep/linux/ioctl_cfg80211.c:1822:110
index 24 is out of range for type 'u8 [*]'
---
 include/ieee80211.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/ieee80211.h b/include/ieee80211.h
index 62d0f66..9687bfc 100644
--- a/include/ieee80211.h
+++ b/include/ieee80211.h
@@ -335,7 +335,7 @@ typedef struct ieee_param {
 		struct {
 			u32 len;
 			u8 reserved[32];
-			u8 data[0];
+			u8 data[];
 		} wpa_ie;
 		struct {
 			int command;
@@ -348,7 +348,7 @@ typedef struct ieee_param {
 			u8 idx;
 			u8 seq[8]; /* sequence counter (set: RX, get: TX) */
 			u16 key_len;
-			u8 key[0];
+			u8 key[];
 		} crypt;
 #ifdef CONFIG_AP_MODE
 		struct {
@@ -360,7 +360,7 @@ typedef struct ieee_param {
 		} add_sta;
 		struct {
 			u8	reserved[2];/* for set max_num_sta */
-			u8	buf[0];
+			u8	buf[];
 		} bcn_ie;
 #endif
 
@@ -371,7 +371,7 @@ typedef struct ieee_param {
 typedef struct ieee_param_ex {
 	u32 cmd;
 	u8 sta_addr[ETH_ALEN];
-	u8 data[0];
+	u8 data[];
 } ieee_param_ex;
 
 struct sta_data {
@@ -1177,7 +1177,7 @@ struct ieee80211_info_element_hdr {
 struct ieee80211_info_element {
 	u8 id;
 	u8 len;
-	u8 data[0];
+	u8 data[];
 } __attribute__((packed));
 #endif
 
@@ -1249,7 +1249,7 @@ struct ieee80211_txb {
 	u16 reserved;
 	u16 frag_size;
 	u16 payload_size;
-	struct sk_buff *fragments[0];
+	struct sk_buff *fragments[];
 };