linux-kernel - Re: kdump broken on 2.6.37-rc4

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: <4D0AB9CB.2090906@zytor.com>
Date:	Thu, 16 Dec 2010 17:15:55 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	Yinghai Lu <yinghai@...nel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Stanislaw Gruszka <sgruszka@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Maxim Uvarov <muvarov@...il.com>, linux-kernel@...r.kernel.org,
	Neil Horman <nhorman@...hat.com>
Subject: Re: kdump broken on 2.6.37-rc4

On 12/16/2010 02:01 PM, Vivek Goyal wrote:
> 
> Yinghai, 
> 
> On my system above change works fine and I can boot into second kernel. So
> it will boil down to knowing what are the exact constraints on heap for
> decompression and for 32bit can we allow heap upto 896MB or not.
> 

By the way, 896 MiB is almost certainly too aggressive; the vmalloc area
is adjustable and there are other bits that can chew off a few MiB of
address space.  I would suggest we either make it 512 or 768 MiB *and*
fix the brk limit.

Opinions?

	-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/