From patchwork Wed Dec 7 15:00:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yingliang X-Patchwork-Id: 632196 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1B2F2C4708E for ; Wed, 7 Dec 2022 15:03:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229522AbiLGPDV (ORCPT ); Wed, 7 Dec 2022 10:03:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230172AbiLGPCw (ORCPT ); Wed, 7 Dec 2022 10:02:52 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34DE7388C for ; Wed, 7 Dec 2022 07:02:36 -0800 (PST) Received: from dggpemm500007.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4NS0qX2mtJzmWRv; Wed, 7 Dec 2022 23:01:44 +0800 (CST) Received: from huawei.com (10.175.103.91) by dggpemm500007.china.huawei.com (7.185.36.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 7 Dec 2022 23:02:34 +0800 From: Yang Yingliang To: , , CC: Subject: [PATCH v2 4/4] libertas/cmdresp: don't call kfree_skb() under spin_lock_irqsave() Date: Wed, 7 Dec 2022 23:00:08 +0800 Message-ID: <20221207150008.111743-5-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221207150008.111743-1-yangyingliang@huawei.com> References: <20221207150008.111743-1-yangyingliang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500007.china.huawei.com (7.185.36.183) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org 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: f52b041aed77 ("libertas: Add spinlock to avoid race condition") Signed-off-by: Yang Yingliang --- drivers/net/wireless/marvell/libertas/cmdresp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/marvell/libertas/cmdresp.c b/drivers/net/wireless/marvell/libertas/cmdresp.c index cb515c5584c1..74cb7551f427 100644 --- a/drivers/net/wireless/marvell/libertas/cmdresp.c +++ b/drivers/net/wireless/marvell/libertas/cmdresp.c @@ -48,7 +48,7 @@ void lbs_mac_event_disconnected(struct lbs_private *priv, /* Free Tx and Rx packets */ spin_lock_irqsave(&priv->driver_lock, flags); - kfree_skb(priv->currenttxskb); + dev_kfree_skb_irq(priv->currenttxskb); priv->currenttxskb = NULL; priv->tx_pending_len = 0; spin_unlock_irqrestore(&priv->driver_lock, flags);