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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_DIGITS, FROM_LOCAL_HEX,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 BD963C2D0A8 for ; Sat, 26 Sep 2020 14:15:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8042B2184D for ; Sat, 26 Sep 2020 14:15:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729434AbgIZOPK (ORCPT ); Sat, 26 Sep 2020 10:15:10 -0400 Received: from mail-il1-f200.google.com ([209.85.166.200]:50369 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726210AbgIZOPJ (ORCPT ); Sat, 26 Sep 2020 10:15:09 -0400 Received: by mail-il1-f200.google.com with SMTP id u20so4722782ilk.17 for ; Sat, 26 Sep 2020 07:15:09 -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=HwmCPWTIkgbEGZ/8XPswh0ymyUWqTxojzs4EteOI0oI=; b=WvcPxhEgI0PS4zU93jdsIO0nidyU8de24izCFb0EilPUYTEWY5cOjJbLC0mhLuWNfv mkppeDYiygmq3lbd4aaAazbajNgUFnay5NcNtb/CwtCnN+nLgCZnlazeH/5CDP54D4X0 Wzosictw0J9Kfr34CKKVLaJ0Be0jJvmF3/A8t1rYem4xEbulsYo+koi7QfHZ0pas8mE3 CttMy/pbBOQmOYOEwMPmWiXjN3hk5Ok8YNd0gbcX97VrCztZmfaH6nE9pFdCUKYHaJGN FljldGFk3XHnNAeLQua9btCiBkobFYzBNAJvMZdW4/1UuYibRY8VOBH7ULkjJApb2O/8 ha3g== X-Gm-Message-State: AOAM531GklXXYlJ5oyD+8gt5olfbBUOz2/a5Wbxow3450HUy45+rgScM rDEr4Yrq5Wf5GkgfnWNcoBJF37gzDRVTMAclOvTa7lCocpfD X-Google-Smtp-Source: ABdhPJzP66eKvWYkv61MfW0FnGK+nWFCGDClVgDMl1tg7kxSm9jI8sqCeWZEobb84wJHGaCWQIJpQrNgfTmvYXb6PJHaAILdZudU MIME-Version: 1.0 X-Received: by 2002:a5e:8e0a:: with SMTP id a10mr2298570ion.200.1601129709294; Sat, 26 Sep 2020 07:15:09 -0700 (PDT) Date: Sat, 26 Sep 2020 07:15:09 -0700 In-Reply-To: <35306a33-70b5-5e7d-a582-4ba5235953a8@kernel.dk> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008fddee05b0380f03@google.com> Subject: Re: KASAN: use-after-free Read in io_wqe_worker From: syzbot To: axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+9af99580130003da82b1@syzkaller.appspotmail.com Tested on: commit: 41d5f92f io-wq: fix worker refcount race git tree: git://git.kernel.dk/linux-block.git kernel config: https://syzkaller.appspot.com/x/.config?x=d31db37354c30905 dashboard link: https://syzkaller.appspot.com/bug?extid=9af99580130003da82b1 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) Note: testing is done by a robot and is best-effort only.