From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 8583BC433DF for ; Sat, 16 May 2020 20:43:10 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 665BB20709 for ; Sat, 16 May 2020 20:43:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 665BB20709 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=davemloft.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linux-kernel-mentees-bounces@lists.linuxfoundation.org Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 2C74F87E75; Sat, 16 May 2020 20:43:09 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BLsFNdm-Z8oM; Sat, 16 May 2020 20:43:08 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id B363587DC4; Sat, 16 May 2020 20:43:08 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 84406C0859; Sat, 16 May 2020 20:43:08 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 66C0DC016F for ; Sat, 16 May 2020 20:43:07 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 5573487E75 for ; Sat, 16 May 2020 20:43:07 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id O3nAYn982jxj for ; Sat, 16 May 2020 20:43:06 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from shards.monkeyblade.net (shards.monkeyblade.net [23.128.96.9]) by whitealder.osuosl.org (Postfix) with ESMTPS id E629387DC4 for ; Sat, 16 May 2020 20:43:06 +0000 (UTC) Received: from localhost (unknown [IPv6:2601:601:9f00:477::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id D41CD119447A7; Sat, 16 May 2020 13:43:04 -0700 (PDT) Date: Sat, 16 May 2020 13:43:04 -0700 (PDT) Message-Id: <20200516.134304.1945525064964213746.davem@davemloft.net> To: madhuparnabhowmik10@gmail.com From: David Miller In-Reply-To: <20200516074515.13745-1-madhuparnabhowmik10@gmail.com> References: <20200516074515.13745-1-madhuparnabhowmik10@gmail.com> X-Mailer: Mew version 6.8 on Emacs 26.3 Mime-Version: 1.0 X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Sat, 16 May 2020 13:43:05 -0700 (PDT) Cc: paulmck@kernel.org, yoshfuji@linux-ipv6.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, cai@lca.pw, kuba@kernel.org, joel@joelfernandes.org, kuznet@ms2.inr.ac.ru, linux-kernel-mentees@lists.linuxfoundation.org, kaber@trash.net Subject: Re: [Linux-kernel-mentees] [PATCH net v2] ipv6: Fix suspicious RCU usage warning in ip6mr X-BeenThere: linux-kernel-mentees@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-kernel-mentees-bounces@lists.linuxfoundation.org Sender: "Linux-kernel-mentees" From: madhuparnabhowmik10@gmail.com Date: Sat, 16 May 2020 13:15:15 +0530 > From: Madhuparna Bhowmik > > This patch fixes the following warning: > > ============================= > WARNING: suspicious RCU usage > 5.7.0-rc4-next-20200507-syzkaller #0 Not tainted > ----------------------------- > net/ipv6/ip6mr.c:124 RCU-list traversed in non-reader section!! > > ipmr_new_table() returns an existing table, but there is no table at > init. Therefore the condition: either holding rtnl or the list is empty > is used. > > Fixes: d1db275dd3f6e ("ipv6: ip6mr: support multiple tables") > Reported-by: kernel test robot > Suggested-by: Jakub Kicinski > Signed-off-by: Madhuparna Bhowmik Applied and queued up for -stable, thanks. _______________________________________________ Linux-kernel-mentees mailing list Linux-kernel-mentees@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees