linux-kernel - Re: [3.9-rc1 x86] Bug in ioremap code?

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: <513725A8.8090904@linux.intel.com>
Date:	Wed, 06 Mar 2013 03:16:56 -0800
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
CC:	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org
Subject: Re: [3.9-rc1 x86] Bug in ioremap code?

On 03/06/2013 02:16 AM, Tetsuo Handa wrote:
> 
> But I found that this bug occurs only when the system has little RAM.
> 
> With 892MB RAM where /proc/meminfo would show HighTotal > 0,
> this bug does not occur.
> 
>     HighTotal:          4040 kB
>     LowTotal:         873960 kB
> 
> With 888MB RAM where /proc/meminfo would show HighTotal == 0,
> this bug occurs.
> 

OK, this makes sense.  I guess we have a bug in the case where we do not
exhaust lowmem.

	-hpa


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/