From patchwork Wed Dec 7 02:18:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yingliang X-Patchwork-Id: 631628 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 AEA0DC63707 for ; Wed, 7 Dec 2022 02:21:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229814AbiLGCVK (ORCPT ); Tue, 6 Dec 2022 21:21:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229653AbiLGCU5 (ORCPT ); Tue, 6 Dec 2022 21:20:57 -0500 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5648E5445B for ; Tue, 6 Dec 2022 18:20:56 -0800 (PST) Received: from dggpemm500007.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4NRgwh4rRpzRpnB; Wed, 7 Dec 2022 10:20:04 +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 10:20:54 +0800 From: Yang Yingliang To: , , CC: , Subject: [PATCH v2 5/6] Bluetooth: hci_core: don't call kfree_skb() under spin_lock_irqsave() Date: Wed, 7 Dec 2022 10:18:34 +0800 Message-ID: <20221207021835.3012559-6-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221207021835.3012559-1-yangyingliang@huawei.com> References: <20221207021835.3012559-1-yangyingliang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500007.china.huawei.com (7.185.36.183) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@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(). Fixes: 9238f36a5a50 ("Bluetooth: Add request cmd_complete and cmd_status functions") Signed-off-by: Yang Yingliang --- net/bluetooth/hci_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 9d9fb3dff22a..03b2a85cbc80 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3981,7 +3981,7 @@ void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status, *req_complete_skb = bt_cb(skb)->hci.req_complete_skb; else *req_complete = bt_cb(skb)->hci.req_complete; - kfree_skb(skb); + dev_kfree_skb_irq(skb); } spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); }