netdev - Re: [PATCH 2/2] move unneeded data to initdata section

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: <473C9B3A.4020401@sw.ru>
Date:	Thu, 15 Nov 2007 22:17:14 +0300
From:	"Denis V. Lunev" <den@...ru>
To:	Sam Ravnborg <sam@...nborg.org>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Denis V. Lunev" <den@...nvz.org>, davem@...emloft.net,
	containers@...ts.osdl.org, netdev@...r.kernel.org, clg@...ibm.com,
	benjamin.thery@...l.net
Subject: Re: [PATCH 2/2] move unneeded data to initdata section

Sam Ravnborg wrote:
> On Thu, Nov 15, 2007 at 11:19:26AM -0700, Eric W. Biederman wrote:
>> Sam Ravnborg <sam@...nborg.org> writes:
>>
>>> On Thu, Nov 15, 2007 at 05:42:04PM +0300, Denis V. Lunev wrote:
>>>> nothing is discarded after module load. Though, I can be wrong. Could
>>>> you point me to the exact place?
>>> If __initdata is not discarded after module load then we should do it.
>>> There is no reason to waste __initdata RAM when the module is loaded.
>> Down at the bottom of sys_init_module we have:
>>
>> 	/* Drop initial reference. */
>> 	module_put(mod);
>> 	unwind_remove_table(mod->unwind_info, 1);
>>
>> 	module_free(mod, mod->module_init);
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> 	mod->module_init = NULL;
>> 	mod->init_size = 0;
>> 	mod->init_text_size = 0;
>> 	mutex_unlock(&module_mutex);
>>
>> 	return 0;
>>
>> Which frees the memory for the .init sections.
> 
> Thanks for clarifying this Eric - should have looked myself..

clear :) I was wrong... Thank you for pointing this out.

will you mind against this?

View attachment "1.diff" of type "text/plain" (535 bytes)