linux-kernel - Re: 32bit NUMA and fakeNUMA broken for AMD CPUs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20110630163227.GU478@escobedo.osrc.amd.com>
Date:	Thu, 30 Jun 2011 18:32:28 +0200
From:	Hans Rosenfeld <hans.rosenfeld@....com>
To:	Tejun Heo <tj@...nel.org>
CC:	"Seidel, Conny" <Conny.Seidel@....com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: 32bit NUMA and fakeNUMA broken for AMD CPUs

On Thu, Jun 30, 2011 at 11:55:57AM -0400, Tejun Heo wrote:
> Hello,
> 
> On Thu, Jun 30, 2011 at 03:13:38PM +0200, Hans Rosenfeld wrote:
> > On Wed, Jun 29, 2011 at 12:15:17PM -0400, Tejun Heo wrote:
> > > Hans, can you please apply the following patch and post the boot log
> > > from both SPARSEMEM and DISCONTIGMEM kernels?  On SPARSEMEM, it should
> > > reject NUMA config and boot w/ flatmem.
> > 
> > Bootlogs are attached. Now DISCONTIGMEM panics.
> ...
> > [    0.000000] Linux version 2.6.39-rc5-00181-g2706a0b-dirty (root@...ms) (gcc version 4.5.2 (Gentoo 4.5.2 p1.1, pie-0.4.5) ) #26 SMP Thu Jun 30 14:39:05 CEST 2011
> 
> Hmmm... it looks like the kernel is crashing from the other bug in
> this thread.  Can you please apply both patches on top of 3.0-rc5 and
> re-test?

Oh, thats why it looked so familiar :)

I wasn't able to reproduce this panic on this machine earlier without
DISCONTIGMEM.

It works now with both patches, bootlog is attached.


Hans


-- 
%SYSTEM-F-ANARCHISM, The operating system has been overthrown

View attachment "bootlog_discontigmem" of type "text/plain" (17607 bytes)