Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp3951500pxf; Mon, 29 Mar 2021 16:34:43 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxZTkxY7Jz6uNVR535HWWXnMqxOtX8e0tM220obWUJfX7KvaMzEeiqhBdMgSM3Md94jVP5D X-Received: by 2002:a17:907:3e9e:: with SMTP id hs30mr31278765ejc.66.1617060882882; Mon, 29 Mar 2021 16:34:42 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1617060882; cv=none; d=google.com; s=arc-20160816; b=MWsWMTX4T96BE+uES3Q67p+IGJkR/skHXznnp/K+QAehSx+J7eV/n/jnJY2+K6q3Sx arfFAs9PWnxW+Q6cd/8hYHya6Px6tNZyYqBGS+kT6lKYuRIpDRwRvqmjzCnoeyvfNY6m tSWwBo0aQY3lj4W2hKJ4qcj4W1X4qThliRo8diWEhYzB2ZgLZpq4BdtFPcls22l7Q2j1 h6wkt5jqqPY8ouvyLIJgHcVx2ja/3bMB/hY7Ygoh4SMkZy+ICxBnXp/+YE7BMk9ijnt2 MC5ifSUHZ/GCQVyPtpFyyiWn0hRrX7wFpdCTFHi3YMjf2gsY++Z5S8jWykgWDdeX8Oz3 t4xg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:to:from:subject:message-id:in-reply-to:date :mime-version; bh=lMlioT72BHXScbFHNZMJLoPdODEiwb40F9vPrqeqLoM=; b=j8nwleRgDf39cWvonJynvO2JuYYCeFKinpkjQiJTgztIdcI2WnQcqg0uibceWVqu9J ANPH4I9cpQi3+Dt8FXlVOnc15OrYAQLlHP09t1Oc2yRK4pPiznaXSMw4IIAqu7mXRAfu +a9PeRtbHD1YVIzDZgJd+UNPBd1uDQUSFHGEAQ+iVkxMFBiEa0KyPPnjbnRueVIfKOoK Un4smeUoqXGbkIuHTYrHek6r/Ap2FLiPb7603lp4+lsS1rnWcF0yMMambVjKs+ZNU7E0 TWYLFp5wCGOx2+le+pHbCOEsQLmn+U9gf/q97soXN4Ty8p85qTue5JJljcIQlIONGeS4 E46g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id g14si13592629edr.362.2021.03.29.16.34.20; Mon, 29 Mar 2021 16:34:42 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 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 S229483AbhC2XdY (ORCPT + 99 others); Mon, 29 Mar 2021 19:33:24 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:50555 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229911AbhC2XdI (ORCPT ); Mon, 29 Mar 2021 19:33:08 -0400 Received: by mail-il1-f198.google.com with SMTP id b14so12945555ilv.17 for ; Mon, 29 Mar 2021 16:33:08 -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=lMlioT72BHXScbFHNZMJLoPdODEiwb40F9vPrqeqLoM=; b=cM4M6EnLAqB+BDV7/9am65C3lZV35sIIPfsHXaWrBBQnMr32F+sxG1neBWUF+omYmB 7qUXYmyU1eiXbmLcyVmHoBveooK1nUGWRHKEOhzyiQdy8XTtf2zyp+FPlgJhcQWxJ+/y iwnLqv0Ga50yOktR6YVvbrIycdr+JcL3ZmciVwkHw3fFbueSGb4DLsi/+LfIzkZP60tu pBVYV4pZO2g25LQ7Ju9De6YYTN0jjpKuwwqJqJ77f8rOTWrJoBP1Ruv7ivQimsIFS4u4 +Y8VHovUrDfAJ4u6Kd9ru+CeDz3rngrSrtTMhZqGqx7or3zn4vZ7BMnILhaQweojOXZ8 0AVQ== X-Gm-Message-State: AOAM5318ZKSXxNc2pJIUc3EowocXo82Vjzz1Ik7KE+Z7NCjneKmY/qGl G0tXuTNI+8Q9cS0zEpvNrSzn1vg3edcNpMd0gi+bMfaLunDM MIME-Version: 1.0 X-Received: by 2002:a05:6638:378c:: with SMTP id w12mr26304998jal.127.1617060787957; Mon, 29 Mar 2021 16:33:07 -0700 (PDT) Date: Mon, 29 Mar 2021 16:33:07 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d8bb1905beb54dcf@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in create_worker_cb From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, peterz@infradead.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com, will@kernel.org 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+099593561bbd1805b839@syzkaller.appspotmail.com Tested on: commit: 24996dbd io_uring: reg buffer overflow checks hardening git tree: git://git.kernel.dk/linux-block for-5.13/io_uring kernel config: https://syzkaller.appspot.com/x/.config?x=cbb3af9ca0d22f7a dashboard link: https://syzkaller.appspot.com/bug?extid=099593561bbd1805b839 compiler: Note: testing is done by a robot and is best-effort only.