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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5537C433F5 for ; Fri, 1 Apr 2022 12:26:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345919AbiDAM2R (ORCPT ); Fri, 1 Apr 2022 08:28:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36554 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243436AbiDAM2C (ORCPT ); Fri, 1 Apr 2022 08:28:02 -0400 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 186D7183815 for ; Fri, 1 Apr 2022 05:26:08 -0700 (PDT) Received: by mail-il1-f199.google.com with SMTP id g5-20020a92dd85000000b002c79aa519f4so1671918iln.10 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=hcUIFoTwKuRdfHlWe5Z9ThBJPTfIOVSvBFcCIfjyoiI/T14AHEbXOfraIOzhNek9ZS xcwmT2fNfy2Zvpjllks4AZrYkyj48cl01R1HCNnZjWhMS+NsIpkzrrdlB8N0s0hpjyyb uyraUgGr5UIbwoNimx/3Kyk/elfPyDdspE8cPYnWl4crUt+c3lzL2dxgLaJmNYehvdgH W+M69BVrWrxpVngVp90gg+70KTqhjRES5z1JUMW8+mycA4XdI3zb0w+5l5ZWkvWHbrPu CrKSttgd/PsVQCbZpEjl+3UjxiCESb32RrhoD30iBclSTbCT6RkZYq0IJuCg+ABHiGhX QcOg== X-Gm-Message-State: AOAM532N1jT3yDYuxQuRuHBkiQBVdPA3qfscb8BpQhhSxnd6Jr2ye/FL 0qwR0VYv/5pQFVT/kMQ2L235S4gZQCOIihLSgTbrOoK4iIBB X-Google-Smtp-Source: ABdhPJwDZik/5YqEkLg15L9vjjc+LQ5ps+Q+q9QmEMDLHQCwlUI0ry6SodWxtS8wopvGq3bVeCktQ5JblDhZ01euO8/ydJqzQyUV 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" Precedence: bulk List-ID: X-Mailing-List: io-uring@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