From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C54028489 for ; Fri, 10 Mar 2023 14:15:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 49497C433EF; Fri, 10 Mar 2023 14:15:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678457716; bh=aPBrPNFTgYK3zYYXSDcNTUMkvzQhyMoF07UgeJ3ylPk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tn3paG4g0tAodw0aKmAKsBrp1mM8oVF/sAGGNq3vMFaWgBJS6WR8xEUsv9k8IGg7D 4TTAFT2plNRZjLD5DnW6yjhvsOZGrWONLhGTcnY5Z7W/iEbtNtNl9Tbf2l/sj2Q2k1 t1BEUiGnpKKsNt580AmgQQ6Kp2UF7Fn3x0It8niU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Kalle Valo , Sasha Levin Subject: [PATCH 4.19 034/252] wifi: wl3501_cs: dont call kfree_skb() under spin_lock_irqsave() Date: Fri, 10 Mar 2023 14:36:44 +0100 Message-Id: <20230310133719.864060757@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310133718.803482157@linuxfoundation.org> References: <20230310133718.803482157@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Yang Yingliang [ Upstream commit 44bacbdf9066c590423259dbd6d520baac99c1a8 ] It is not allowed to call kfree_skb() from hardware interrupt context or with interrupts being disabled. So replace kfree_skb() with dev_kfree_skb_irq() under spin_lock_irqsave(). Compile tested only. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Yang Yingliang Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20221207150453.114742-1-yangyingliang@huawei.com Signed-off-by: Sasha Levin --- drivers/net/wireless/wl3501_cs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/wl3501_cs.c b/drivers/net/wireless/wl3501_cs.c index f33ece9370473..cfde9b94b4b60 100644 --- a/drivers/net/wireless/wl3501_cs.c +++ b/drivers/net/wireless/wl3501_cs.c @@ -1329,7 +1329,7 @@ static netdev_tx_t wl3501_hard_start_xmit(struct sk_buff *skb, } else { ++dev->stats.tx_packets; dev->stats.tx_bytes += skb->len; - kfree_skb(skb); + dev_kfree_skb_irq(skb); if (this->tx_buffer_cnt < 2) netif_stop_queue(dev); -- 2.39.2