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 E3ACAC001B0 for ; Mon, 10 Jul 2023 20:34:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231220AbjGJUea (ORCPT ); Mon, 10 Jul 2023 16:34:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230155AbjGJUea (ORCPT ); Mon, 10 Jul 2023 16:34:30 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 71F75198; Mon, 10 Jul 2023 13:34:29 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0FFA0611C1; Mon, 10 Jul 2023 20:34:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2DD2FC433C8; Mon, 10 Jul 2023 20:34:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1689021268; bh=zJ3p+SsxMLL/Jwj+c7UAX3pG24wyxVfvqFt+2DIfZk0=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=lic5Hyov8Ppi0+Nye6nE9GqVVHKAUHZqbLMIuYnt6E+w/ix7LWhr2j7NzM1ty3x0j wZeTqokM56okDa5H4i488obKpHPaFCQH8aw8kNc6udLjsqkl+lJlO+tYm0cM4zDrOC /4QRehpUqfhhjSAjYMfaefWepYF1fFe7gEPDNFxs= Date: Mon, 10 Jul 2023 13:34:27 -0700 From: Andrew Morton To: Zheng Zhang Cc: keescook@chromium.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [BUG]: bad usercopy in kvm_stats_read in mm/usercopy.c Message-Id: <20230710133427.fb599ef486c7b764d9ca2cc3@linux-foundation.org> In-Reply-To: References: X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Sun, 9 Jul 2023 14:32:09 -0700 Zheng Zhang wrote: > Kees, Andrew, and to whom it may concern: > > Hello! We have found a bug in the Linux kernel version 6.2.0 by syzkaller > with our own templates. It also produces a POC. > Attached is the report, log, and reproducers generated by syzkaller > Please let me know if there is any additional information that I can > provide to help debug this issue. > Thanks! Let's cc the kvm mailing list. Original email is at https://lkml.kernel.org/r/CAC_GQSr3xzZaeZt85k_RCBd5kfiOve8qXo7a81Cq53LuVQ5r=Q@mail.gmail.com