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 2F486C7618D for ; Wed, 15 Mar 2023 05:35:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231409AbjCOFfo (ORCPT ); Wed, 15 Mar 2023 01:35:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230432AbjCOFfl (ORCPT ); Wed, 15 Mar 2023 01:35:41 -0400 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C3C8536689 for ; Tue, 14 Mar 2023 22:35:27 -0700 (PDT) Received: by mail-il1-f200.google.com with SMTP id z8-20020a92cd08000000b00317b27a795aso9265349iln.0 for ; Tue, 14 Mar 2023 22:35:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678858526; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+ezVTqICDSiSn/372m2AODlES/x6h4w7Vq4yCunazgY=; b=EkZvP5Fvzne2CIAnvMc6pdkIJfM2QRK7iDNNoEq30GSBIyAbamkscj27mxRSGaYBJw 2eVQ/oqxIDRAA/pC+P/fQELQGuAlxHnqdz+5J6SIMj8BMqEbxjBuzbzZxsNMo5ZpDlTg tJO6ZTUDP2WQBTx7517InPulYJSfzhpSASob93sB8dZWnko/pv2C3pdKbwnZYXYDF1S8 8PFakmMNE++zr8pHPz51dEQOY3SjwYTDwL5KP0XS1k0fQiuopNfJg1O+IlZMH2CIRnyF cuFcI1sIbTzK+TiOSDVa+OVfGOzAsDvRCBcoMcIJR2QZBUkbDSADF+mXynwxoLHdO/2B sndw== X-Gm-Message-State: AO0yUKUA2Cia23rJ3ZuMrarAQvzEzPld25QQsN3edu3XdfibF/YtP/Uf hr0I+DmU7u/ePszv6wV1ZhZcS47vhiBaFDoH1R4Yt9pnMgV6 X-Google-Smtp-Source: AK7set+wuIJ21um9TSx52TdARHKOJQSeOjSvpUyJnZA7zidHuYslsh2kkedusXN9WdodJqH7DwtgLiy5GIKP5+DNpxLHiIWFE1Da MIME-Version: 1.0 X-Received: by 2002:a6b:6a11:0:b0:745:68ef:e410 with SMTP id x17-20020a6b6a11000000b0074568efe410mr18224694iog.0.1678858526167; Tue, 14 Mar 2023 22:35:26 -0700 (PDT) Date: Tue, 14 Mar 2023 22:35:26 -0700 In-Reply-To: <00000000000097fc2305f1ce87d9@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001497d605f6e9b6e6@google.com> Subject: Re: [syzbot] [io-uring?] KASAN: use-after-free Read in io_worker_get 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: linux-kernel@vger.kernel.org syzbot suspects this issue was fixed by commit: commit e6db6f9398dadcbc06318a133d4c44a2d3844e61 Author: Jens Axboe Date: Sun Jan 8 17:39:17 2023 +0000 io_uring/io-wq: only free worker if it was allocated for creation bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=108bc2e2c80000 start commit: a689b938df39 Merge tag 'block-2023-01-06' of git://git.ker.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=33ad6720950f996d dashboard link: https://syzkaller.appspot.com/bug?extid=55cc59267340fad29512 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1532ef72480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10b43f3a480000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: io_uring/io-wq: only free worker if it was allocated for creation For information about bisection process see: https://goo.gl/tpsmEJ#bisection