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[2620:137:e000::1:20]) by mx.google.com with ESMTP id q10-20020a170902daca00b0015d180d0710si20834209plx.26.2022.06.15.05.50.43; Wed, 15 Jun 2022 05:50:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=HblmdovL; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347958AbiFOMUS (ORCPT + 99 others); Wed, 15 Jun 2022 08:20:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235232AbiFOMUQ (ORCPT ); Wed, 15 Jun 2022 08:20:16 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2697B366A3; Wed, 15 Jun 2022 05:20:16 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id CF077B81D92; Wed, 15 Jun 2022 12:20:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 5AC9DC34115; Wed, 15 Jun 2022 12:20:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655295613; bh=eDPWJ22K5Yb0l4NNxcNbEGmohnUi3JOvIlFiu925Tp8=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=HblmdovLimj0OLJSV+33FXd9CEZCXH4qIDgEpnL57XEGg0SuXURAmEhxwUFWAfDDM 8Y/IJert6xQaeTG4amu0DStjL4SFCl03TW7X67sM1ZIr56seVgOuxsEA7mqBs+YOOo injtJwjKiAtrE96PyzYQ7fTqa/FfCaBraL2fZcz1RfEJvDe/o4tvQr6IMWx9se98Tj I0j0bXfilGLg2MD0PVwjBM99I/DfdifXwiYBIUBdsOaOxJUF7LlIfU0HA7PGJtOoQ0 5YqZWp3ER22F7qCxhoM790wND2bsBxILzt3+I6RM4YEZNAnlwdLvamcxyKFgVIXoyd d3Mrh2GIwQMjw== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 3F990E6D466; Wed, 15 Jun 2022 12:20:13 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v5] net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg From: patchwork-bot+netdevbpf@kernel.org Message-Id: <165529561325.20387.9560588021294882995.git-patchwork-notify@kernel.org> Date: Wed, 15 Jun 2022 12:20:13 +0000 References: <20220614092557.6713-1-duoming@zju.edu.cn> In-Reply-To: <20220614092557.6713-1-duoming@zju.edu.cn> To: Duoming Zhou Cc: linux-hams@vger.kernel.org, pabeni@redhat.com, jreuter@yaina.de, ralf@linux-mips.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas@osterried.de X-Spam-Status: No, score=-8.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (master) by David S. Miller : On Tue, 14 Jun 2022 17:25:57 +0800 you wrote: > The skb_recv_datagram() in ax25_recvmsg() will hold lock_sock > and block until it receives a packet from the remote. If the client > doesn`t connect to server and calls read() directly, it will not > receive any packets forever. As a result, the deadlock will happen. > > The fail log caused by deadlock is shown below: > > [...] Here is the summary with links: - [net,v5] net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg https://git.kernel.org/netdev/net/c/219b51a6f040 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html