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 X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 354E1C4320A for ; Thu, 19 Aug 2021 17:25:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1ABAF6108E for ; Thu, 19 Aug 2021 17:25:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229474AbhHSRZq (ORCPT ); Thu, 19 Aug 2021 13:25:46 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:37788 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233802AbhHSRZn (ORCPT ); Thu, 19 Aug 2021 13:25:43 -0400 Received: by mail-io1-f72.google.com with SMTP id h3-20020a056602008300b005b7c0e23e11so3725570iob.4 for ; Thu, 19 Aug 2021 10:25:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=IP7asdtdFlXOxOEQ1U/M8uS3b6zpj0naPI5qY7HFuyk=; b=keJkcNOAC4UmaK5IkiS8Hlg/HakXZlr18B7je+zGYPzTVdB85L/cdhNfUWGxKKZSek SE9ymAzFkX82T84WP+eGkV4hO8B2zO1kXKAXUE6jrgwgV0TrISP+cHEgymPLo0u+HqJw IKvFKY3KTmksxv6zjyye/bCBJD4IbhPZGgJvcYJEIQXiE90OUMzhJhKSMakuUWBD1dXl OiUDHxbtQzOGSTORwTR2kTBzPE6O98sLNxSTwQAKaTSTquz79j5ciqxaZLFPV3sjhHJ9 RqUSX00A4ZqGTvfv5S3idwV2Uztb8QCaBR1I20/bTOAcvnm0RxKF6PmwykXxk44EdpgE VMng== X-Gm-Message-State: AOAM532TVcgrUF0Zcn0RE1o0dU21RWIsbCYJOM6HBD8jTUFZCKvu+Ejr b2KkBibyqYxx7fwQaQ/gMqt2oA2pvFp+8+QwExrvNdlXY5/L X-Google-Smtp-Source: ABdhPJz8Eh1WAR5J1R4msOtBq6GuxBX1ajRoAfCtPA8fNLrLBK7DYhscYHz2hkMGcWd3N5eUqC3mwBzGD+WrIO8BgUyaftSYHgNl MIME-Version: 1.0 X-Received: by 2002:a6b:fb03:: with SMTP id h3mr12381959iog.198.1629393907150; Thu, 19 Aug 2021 10:25:07 -0700 (PDT) Date: Thu, 19 Aug 2021 10:25:07 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000008f3c605c9ecd545@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in tctx_task_work (2) 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 Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+9c3492b27d10dc49ffa6@syzkaller.appspotmail.com Tested on: commit: 923ffe35 Revert "io_uring: improve tctx_task_work() ct.. git tree: https://github.com/isilence/linux.git syztest_ctx_tw kernel config: https://syzkaller.appspot.com/x/.config?x=cb4282936412304f dashboard link: https://syzkaller.appspot.com/bug?extid=9c3492b27d10dc49ffa6 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 Note: testing is done by a robot and is best-effort only.