From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: kernel memory allocation bug in 2.6.27.32-2.6.27.41 kvm section Date: Sun, 27 Dec 2009 12:13:00 +0200 Message-ID: <4B37332C.4020100@redhat.com> References: <200912171635.07009.oscon@mail.datanet.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, Greg KH To: Oscon Return-path: Received: from mx1.redhat.com ([209.132.183.28]:32351 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751313AbZL0KNG (ORCPT ); Sun, 27 Dec 2009 05:13:06 -0500 In-Reply-To: <200912171635.07009.oscon@mail.datanet.hu> Sender: kvm-owner@vger.kernel.org List-ID: On 12/17/2009 05:35 PM, Oscon wrote: > Hello! > > I can't register new account in bugzilla.kernel.org. / my ISP's spamfilter > problem (?) maybe./ > > -------------------------- > > I sent this mail to Greg KH (2.6.27.y maintainer), he sent me: > > "Can you get the kvm maintainers to agree that this is correct? > > thanks, > > greg k-h" > > --------------- > So the bug : > > I found a memory allocation bug in kvm/mmu.c& kvm_main.c. /in > kvm_destroy_vm()/ > > Affected kernel: 2.6.27.32-2.6.27.41 > > Mainline kernel (2.6.32) is not affected. (Modified kvm subsystem.) > > Cause: > http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fstable%2Flinux-2.6.27.y.git;a=commitdiff_plain;h=d2127c8300fb1ec54af56faee17170e7a525326d > > Solution: Revert this patch. > > This bug can cause local DoS in the host system. > > Looks like some other patch is missing in 2.6.27.y. Not sure what it is. But it's safer to revert this patch for now. -- error compiling committee.c: too many arguments to function