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[2620:137:e000::1:20]) by mx.google.com with ESMTP id b11-20020a056402084b00b00418c2b5bed7si7452996edz.441.2022.04.04.05.01.11; Mon, 04 Apr 2022 05:01:37 -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; 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=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343759AbiDAM2S (ORCPT + 99 others); Fri, 1 Apr 2022 08:28:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240693AbiDAM2C (ORCPT ); Fri, 1 Apr 2022 08:28:02 -0400 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1AB14183817 for ; Fri, 1 Apr 2022 05:26:08 -0700 (PDT) Received: by mail-io1-f71.google.com with SMTP id b15-20020a05660214cf00b00648a910b964so1613671iow.19 for ; Fri, 01 Apr 2022 05:26:08 -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=zIIYng1N/hRX2vcx67wB/yl+OUi4SVRZVFeXJVbE33o=; b=350UBc51qjpLwVzk2B5DlKdtZlSMnzgSMkBp1nvy741O2lmzaAvtTZjonVHwhhKjJs SKPX3Da/lOFkB/Maws5nFCnKuavBes2cSx6lYz65wvE1nw1M8KYqGZI2MKYsEnMybM+L uubEFNfXC9E4iJ21QcniJIcOz1BHVvTic8eLnUUJ6Ur8cwY09WN9pAhggQvxkUuBDrYe XzoCc+HfiCqCdCrxB+lSzpQx8O8HsN46HQTsT8mNhJpa/BPUhd4NA0vNED1CVg8Ryyeb nzlyRfMn4dKcaTtkNVcxLUeMSHLdKXBve6BGMV9rwhZjT0DmjQzheg59qlvLnowFJJne IEEg== X-Gm-Message-State: AOAM5332C+wC/kAeD3qbeWhPMuXkm4B27C6bHy5HZ+zieUiQ6sLV6kY7 0gNkyFDYjngY4iU3tulX2sYCpzRuBa2LhGjLThtNZJqZ3ffx MIME-Version: 1.0 X-Received: by 2002:a05:6638:1388:b0:323:78d7:4061 with SMTP id w8-20020a056638138800b0032378d74061mr5561535jad.152.1648815967418; Fri, 01 Apr 2022 05:26:07 -0700 (PDT) Date: Fri, 01 Apr 2022 05:26:07 -0700 In-Reply-To: <00000000000065061a05d85b8262@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000009bb4505db96e211@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in io_poll_check_events 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=-1.7 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SPF_HELO_NONE,SPF_PASS,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 syzbot has bisected this issue to: commit d570aa1c4f191100f502edfc240e8d49687f62ac Author: Jens Axboe Date: Thu Mar 31 18:38:46 2022 +0000 io_uring: drop the old style inflight file tracking bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11507c5b700000 start commit: e5071887cd22 Add linux-next specific files for 20220401 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=13507c5b700000 console output: https://syzkaller.appspot.com/x/log.txt?x=15507c5b700000 kernel config: https://syzkaller.appspot.com/x/.config?x=17fed8f59a304eee dashboard link: https://syzkaller.appspot.com/bug?extid=edb9c7738ba8cbdbf197 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1016f8f3700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14907c5b700000 Reported-by: syzbot+edb9c7738ba8cbdbf197@syzkaller.appspotmail.com Fixes: d570aa1c4f19 ("io_uring: drop the old style inflight file tracking") For information about bisection process see: https://goo.gl/tpsmEJ#bisection