From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793213864; b=UtS9ZDHtp6GgEVIr/ECQZWwRMjBh9oU/OiXRCpZ5H8lhhHe9FLMI1m2t0dLhE1fJEsp4 N5rjeUEHyMWOF1MeSQ7pa0tHRtp96lDPVeJemU4SeFVvqq9n/D7CTXIs6vfLqw93i7RlT 1YLTfqrbJmVuqIo0SKyuvLUJeFXTxhdzgI+iNjQ6PIrlrve2M/AbsI8NPad9xPV6GbrOM B7vULlURSNPReyZur62Y6GBMbB1PxVSszzmDpd4omnQf8KHIHKzGOgey7QdxpEBHo+lMg WiSbdNER5UEyQCTA4G3YyBc19Vhbx5eqqwWABT34v/EyEhmPBQJapYhA2vCzynyjtwg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793213864; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=kU6Odp6Md7bCEnijjzeL6BCM9K9PJ6eoqpfL2xqBepg=; b=5bUSVkcYbAQL21bpqp6eA9e2AVQ1O3p2OB0OACB35Ext9WZtqYu3ovYsGuKfo3O53Ah4 DhW4mVYNSHtCesk04IUCYLXGCzYy0qrX+OzxLRQu72g4scuDuilYIO23AGv1k1uaL4y6m +qEInvuZI0l9Vq6lg0MYugYcIC2CaosnTmp4ulN7TJok2r2CTxmAxo5m6U0k1PhhaY/jC 53JIr+XjTtrtayDVazCJrl5/jsKyoImqhaNR7F3v0PcMerWt2ZkdG0Vy2cdk9ZvvqaI3s viEBmz/RBwm7SjzdDr0S76J0Qs/8ySkjEr5KJVzBvP3O8Gx4bZT5O/5n7BG9mukyFxg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=dDr6FfC0; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AA689606A31A; Wed, 28 Oct 2026 18:57:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=dDr6FfC0 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 099091F01825; Wed, 28 Oct 2026 18:57:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793213863; bh=kU6Odp6Md7bCEnijjzeL6BCM9K9PJ6eoqpfL2xqBepg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=dDr6FfC0PemI/Jvw+4+4ng0Us8AAON/RRajfKXuIQeow/2X/Z7bQXW/7ZS3zUo3gq wvFS1F0E1LrcuWd6Bs5IBPYyBuXSEHjjvHfkZ4hK487SZgdAuKLXgQNxrQDGfDtcR1 MkDmCZliuPKhfTWpT4OMhivuzsZdCJIUsN73U+Do= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bert Karwatzki , Felix Fietkau , Kalle Valo , Sasha Levin Subject: [PATCH 6.1 0655/1887] wifi: mt76: mt7921: fix NULL pointer access in mt7921_ipv6_addr_change Date: Wed, 28 Oct 2026 17:45:51 +0100 Message-ID: <20261028170514.317277880@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170459.200466217@linuxfoundation.org> References: <20261028170459.200466217@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bert Karwatzki [ 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 Signed-off-by: Felix Fietkau Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20240812104542.80760-1-spasswolf@web.de Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7921/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c index fd91d2c537603..6c59ad33d3205 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c @@ -1436,7 +1436,7 @@ static void mt7921_ipv6_addr_change(struct ieee80211_hw *hw, struct inet6_dev *idev) { struct mt7921_vif *mvif = (struct mt7921_vif *)vif->drv_priv; - struct mt7921_dev *dev = mvif->phy->dev; + struct mt7921_dev *dev = mt7921_hw_dev(hw); struct inet6_ifaddr *ifa; struct in6_addr ns_addrs[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; struct sk_buff *skb; -- 2.53.0