recipes-wifi/linux-mt76/files/patches-3.x/0071-mtk-mt76-mt7996-do-not-report-netdev-stats-on-monito.patch

From 5d4625368dbd91070333a90e6e779d09cd6d3ca8 Mon Sep 17 00:00:00 2001
From: Shayne Chen <shayne.chen@mediatek.com>
Date: Thu, 26 Oct 2023 17:27:43 +0800
Subject: [PATCH 071/199] mtk: mt76: mt7996: do not report netdev stats on
 monitor vif

This fixes the following NULL pointer crash when enabling monitor mode:
[  205.593158] Call trace:
[  205.595597]  mt7996_mcu_rx_event+0x4a0/0x6e8 [mt7996e]
[  205.600725]  mt7996_queue_rx_skb+0x6e4/0xfa0 [mt7996e]
[  205.605851]  mt76_dma_rx_poll+0x384/0x420 [mt76]
[  205.610459]  __napi_poll+0x38/0x1c0
[  205.613935]  napi_threaded_poll+0x80/0xe8
[  205.617934]  kthread+0x124/0x128

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
---
 mt7996/mcu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mt7996/mcu.c b/mt7996/mcu.c
index 061461fb..9d96218b 100644
--- a/mt7996/mcu.c
+++ b/mt7996/mcu.c
@@ -540,6 +540,9 @@ static inline void __mt7996_stat_to_netdev(struct mt76_phy *mphy,
 				   drv_priv);
 		wdev = ieee80211_vif_to_wdev(vif);
 
+		if (vif->type == NL80211_IFTYPE_MONITOR)
+			return;
+
 		dev_sw_netstats_tx_add(wdev->netdev, tx_packets, tx_bytes);
 		dev_sw_netstats_rx_add(wdev->netdev, rx_packets, rx_bytes);
 	}
-- 
2.18.0