This is a note to let you know that I've just added the patch titled
wifi: mt76: mt7921: fix NULL pointer access in mt7921_ipv6_addr_change
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-mt76-mt7921-fix-null-pointer-access-in-mt7921_i.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit eec0a0d079f477bd42b01ec9fe515084f24a7d29
Author: Bert Karwatzki <spasswolf@xxxxxx>
Date: Mon Aug 12 12:45:41 2024 +0200
wifi: mt76: mt7921: fix NULL pointer access in mt7921_ipv6_addr_change
[ Upstream commit 479ffee68d59c599f8aed8fa2dcc8e13e7bd13c3 ]
When disabling wifi mt7921_ipv6_addr_change() is called as a notifier.
At this point mvif->phy is already NULL so we cannot use it here.
Signed-off-by: Bert Karwatzki <spasswolf@xxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://patch.msgid.link/20240812104542.80760-1-spasswolf@xxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 6a5c2cae087d..6dec54431312 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -1095,7 +1095,7 @@ static void mt7921_ipv6_addr_change(struct ieee80211_hw *hw,
struct inet6_dev *idev)
{
struct mt792x_vif *mvif = (struct mt792x_vif *)vif->drv_priv;
- struct mt792x_dev *dev = mvif->phy->dev;
+ struct mt792x_dev *dev = mt792x_hw_dev(hw);
struct inet6_ifaddr *ifa;
struct in6_addr ns_addrs[IEEE80211_BSS_ARP_ADDR_LIST_LEN];
struct sk_buff *skb;
