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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id c24-20020a630d18000000b003f5cfdbddadsi1217477pgl.396.2022.05.17.20.51.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 May 2022 20:51:15 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 31E028FD61; Tue, 17 May 2022 20:33:43 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352456AbiEQTCN (ORCPT + 99 others); Tue, 17 May 2022 15:02:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345117AbiEQTCL (ORCPT ); Tue, 17 May 2022 15:02:11 -0400 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A2A53F30D for ; Tue, 17 May 2022 12:02:10 -0700 (PDT) Received: by mail-io1-f70.google.com with SMTP id n5-20020a056602340500b0065a9f426e7aso13040122ioz.0 for ; Tue, 17 May 2022 12:02:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=trJlUoBsAU0Gfja7NVm8U0mdQqxyIpgiYU5DZakIhBI=; b=0zUtqd+nEynqrlcVtDjsniIKNj+8xLfTFJmjgBiKWTOHRjIPYHjN/x2cUxdMnViNgK j7HYH8hJ+Ad/vi4iOtC4zb+NedPcMO5MC5/OpxwBZDiQ7SvajGpwn1lgoWO5NgUy/Kjc AEWfob7McgftlZXSd3Q5b/kQVjBL/+BZinGuRWgigqe3lZazU09IJ+BeWlgQ27Kv4I8E xtDNQw2PNaaQe1jps6OEmpd1HM3JxKLeEQ12l7b00M6O8auceypmIZ0eMZaL2GoKR0lL vBm/eo6oKiEg70h49kLbPd0XB0rpgymKXfcUydIco9vrulHua2XbT0ywGmjcC3vc+Dce LXOw== X-Gm-Message-State: AOAM5310nZS2Lwa9bSFGdoIBF+NVk9WdMfYhfPCXIiouQ/ObCTv37/0J a3noq2vh9JxWwN6l2eFTYTxCy0fEjNwHX4YbOAsHklqQZXVU MIME-Version: 1.0 X-Received: by 2002:a05:6638:d13:b0:32b:cf94:275b with SMTP id q19-20020a0566380d1300b0032bcf94275bmr13195448jaj.22.1652814130055; Tue, 17 May 2022 12:02:10 -0700 (PDT) Date: Tue, 17 May 2022 12:02:10 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001a0dba05df39c7d3@google.com> Subject: Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in io_do_iopoll From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no 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, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+1a0a53300ce782f8b3ad@syzkaller.appspotmail.com Tested on: commit: aa184e86 io_uring: don't attempt to IOPOLL for MSG_RIN.. git tree: git://git.kernel.dk/linux-block io_uring-5.18 kernel config: https://syzkaller.appspot.com/x/.config?x=e408a5da421f07d4 dashboard link: https://syzkaller.appspot.com/bug?extid=1a0a53300ce782f8b3ad compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Note: no patches were applied. Note: testing is done by a robot and is best-effort only.