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 B609EC43334 for ; Sun, 17 Jul 2022 22:58:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232460AbiGQW65 (ORCPT ); Sun, 17 Jul 2022 18:58:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229587AbiGQW6z (ORCPT ); Sun, 17 Jul 2022 18:58:55 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F29345F6F for ; Sun, 17 Jul 2022 15:58:50 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id 89-20020a17090a09e200b001ef7638e536so16551750pjo.3 for ; Sun, 17 Jul 2022 15:58:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=nZfKPEzrFSWnD4VyW5avsdp1T5dDlLEjwOKs9E9j9Io=; b=4rdc9IcZS5Y9hlo7H/x+W9QLnojcgSmuqjAZ+WYCB7jY4H+rTelSerf9HlDd2Ycr9t VR6sT+iF4XtEZiaA/cYg4s5pN1dpqQG7mT9OvKICcxPe8JnhjQaVaYheWTtqL1fL2uUH K3K0kFEe/HjPcGqKbpXPJrCNiM410PtFNEF1ixeusEB4B9LmDRi94nn4MhLBL89eG+7R C6QY8VJOz0bSXP8GmNl5lrS8jrFWAEbTWHOmHEBBpCzi7+daf+PFS8v+MxW55rHV6Rb8 SeZxZrL5/vE8FlVCSPptcmxhxFta9BYGGvwiYk9SQ2Y02QpISJ5T+Yeh143KY/S4EM6O YnGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=nZfKPEzrFSWnD4VyW5avsdp1T5dDlLEjwOKs9E9j9Io=; b=lM9n+1MinIKcthrApVBu4cBFMBwAON2w7CDlr4hP/0/NzHVextZS6FcPk56weOFRIr 3bgSeTitKwFX+XRUVEUbN+qk7HKlVWKOUOYdwQk/dboJ5NYxHEyE90RQyZzodHBI0TsX GBQW+xnQT9W9BYz/ux79qRBAdg8cyBMwetNp6eBNLjOx6gzm9QbUOm1yVhdaThUbAFJm KyL34pcvVYtwlnU171dhA+W3vX2ubFv6EV+NzBhw4atyABatFYGYO3AL3B0B4dUU+DZB 75ls6iILXjKwmatb/OxOX8TiwBqQp+iHFB4p182A1gppPOGKzbSEKTLktky7WcikKxD2 T8wA== X-Gm-Message-State: AJIora8iruwZyHFp96fiX7u/RWcRuHWItJl4YpQcNZa8/SrOuCbkmzCh d7Ym5tDqzaEgpo5Y5r8XceGYXA== X-Google-Smtp-Source: AGRyM1tNh+v5YxjZZicTtlUmmxCaGTCHhNcXislwvxO23JXT3CWeQnrqKIR5SsH3vUWoAJ/NZGsAig== X-Received: by 2002:a17:902:d490:b0:16b:f101:b295 with SMTP id c16-20020a170902d49000b0016bf101b295mr24686581plg.52.1658098730176; Sun, 17 Jul 2022 15:58:50 -0700 (PDT) Received: from [192.168.1.100] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id s9-20020a17090a764900b001ed1444df67sm9996856pjl.6.2022.07.17.15.58.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 17 Jul 2022 15:58:49 -0700 (PDT) Message-ID: Date: Sun, 17 Jul 2022 16:58:48 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: KASAN: use-after-free Read in io_iopoll_getevents Content-Language: en-US To: mail.dipanjan.das@gmail.com, viro@zeniv.linux.org.uk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: syzkaller@googlegroups.com References: From: Jens Axboe In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/17/22 4:55 PM, Dipanjan Das wrote: > Hi, > > We would like to report the following bug which has been found by our > modified version of syzkaller. > > ====================================================== > description: KASAN: use-after-free Read in io_iopoll_getevents > affected file: fs/io_uring.c > kernel version: 5.7 Unless you can trigger this in a stable release, there's nothing we can do about it as 5.7 has been dead for a long time. No more releases of that branch will be happening. -- Jens Axboe