From patchwork Tue Nov 24 10:49:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunsheng Lin X-Patchwork-Id: 331918 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C571BC56201 for ; Tue, 24 Nov 2020 10:53:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8F2AA20B1F for ; Tue, 24 Nov 2020 10:53:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732273AbgKXKxO (ORCPT ); Tue, 24 Nov 2020 05:53:14 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:7976 "EHLO szxga06-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732047AbgKXKxO (ORCPT ); Tue, 24 Nov 2020 05:53:14 -0500 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4CgLTN66WwzhY7V; Tue, 24 Nov 2020 18:52:56 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.487.0; Tue, 24 Nov 2020 18:53:02 +0800 From: Yunsheng Lin To: , , , , , , , , , , , , , , , , CC: , , Subject: [PATCH net-next v3 2/2] net: Use lockdep_assert_in_softirq() in napi_consume_skb() Date: Tue, 24 Nov 2020 18:49:29 +0800 Message-ID: <1606214969-97849-3-git-send-email-linyunsheng@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1606214969-97849-1-git-send-email-linyunsheng@huawei.com> References: <1606214969-97849-1-git-send-email-linyunsheng@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use napi_consume_skb() to assert the case when it is not called in a atomic softirq context. Signed-off-by: Yunsheng Lin --- net/core/skbuff.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index ffe3dcc..effa19d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -902,6 +902,8 @@ void napi_consume_skb(struct sk_buff *skb, int budget) return; } + lockdep_assert_in_softirq(); + if (!skb_unref(skb)) return;