linux-kernel - Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

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]

Date:	Sun, 01 Jun 2008 13:29:39 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Paul Mundt <lethal@...ux-sh.org>,
	Pekka J Enberg <penberg@...helsinki.fi>,
	David Howells <dhowells@...hat.com>,
	Christoph Lameter <clameter@....com>,
	LKML <linux-kernel@...r.kernel.org>, cooloney@...nel.org,
	akpm@...ux-foundation.org, mpm@...enic.com
Subject: Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

On Sun, Jun 01, 2008 at 12:13:02PM +0300, Pekka J Enberg wrote:
>> I mean, assuming the BUG_ON bits are bogus, then we should always pass the 
>> pointer to the allocator. I audited most of the callers and they all seem 
>> to be really just using kmalloc() for allocation anyway.
>>
>> What do you think?

Paul Mundt wrote:
> Isn't this what my original patch did? ;-)

Oh, almost, you had this bit in ksize() of SLAB:

+	page = virt_to_head_page(objp);
+	if (unlikely(!PageSlab(page)))
+		return PAGE_SIZE << compound_order(page);

Did you actually need it for something?

		Pekka
--
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/