From patchwork Wed Dec 7 09:32:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yingliang X-Patchwork-Id: 13066819 X-Patchwork-Delegate: kuba@kernel.org 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 43B9EC352A1 for ; Wed, 7 Dec 2022 09:35:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230089AbiLGJfg (ORCPT ); Wed, 7 Dec 2022 04:35:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46604 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230087AbiLGJfd (ORCPT ); Wed, 7 Dec 2022 04:35:33 -0500 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8172B3C6E6 for ; Wed, 7 Dec 2022 01:35:32 -0800 (PST) Received: from dggpemm500007.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4NRsZ94BXczJqKb; Wed, 7 Dec 2022 17:34:41 +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 17:34:59 +0800 From: Yang Yingliang To: CC: , Subject: [PATCH net 1/3] mISDN: hfcsusb: don't call dev_kfree_skb() under spin_lock_irqsave() Date: Wed, 7 Dec 2022 17:32:37 +0800 Message-ID: <20221207093239.3775457-2-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221207093239.3775457-1-yangyingliang@huawei.com> References: <20221207093239.3775457-1-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: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org It is not allowed to call consume_skb() from hardware interrupt context or with interrupts being disabled. So replace dev_kfree_skb() with dev_consume_skb_irq() under spin_lock_irqsave(). Fixes: 69f52adb2d53 ("mISDN: Add HFC USB driver") Signed-off-by: Yang Yingliang Reviewed-by: Jiri Pirko --- drivers/isdn/hardware/mISDN/hfcsusb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c index 651f2f8f685b..9659ebeb99f0 100644 --- a/drivers/isdn/hardware/mISDN/hfcsusb.c +++ b/drivers/isdn/hardware/mISDN/hfcsusb.c @@ -330,12 +330,12 @@ hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) spin_lock_irqsave(&hw->lock, flags); skb_queue_purge(&dch->squeue); if (dch->tx_skb) { - dev_kfree_skb(dch->tx_skb); + dev_consume_skb_irq(dch->tx_skb); dch->tx_skb = NULL; } dch->tx_idx = 0; if (dch->rx_skb) { - dev_kfree_skb(dch->rx_skb); + dev_consume_skb_irq(dch->rx_skb); dch->rx_skb = NULL; } test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); @@ -1330,7 +1330,7 @@ tx_iso_complete(struct urb *urb) printk("\n"); } - dev_kfree_skb(tx_skb); + dev_consume_skb_irq(tx_skb); tx_skb = NULL; if (fifo->dch && get_next_dframe(fifo->dch)) tx_skb = fifo->dch->tx_skb;