linux-kernel - Re: [PATCH 3.11-rc1] crypto: Fix boot failure due to moduledependency.

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 for Android: free password hash cracker in your pocket

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

Message-Id: <201307201119.FHF34361.FLFOJHFQVSOOMt@I-love.SAKURA.ne.jp>
Date:	Sat, 20 Jul 2013 11:19:17 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	tim.c.chen@...ux.intel.com, herbert@...dor.apana.org.au
Cc:	hpa@...or.com, gregkh@...uxfoundation.org, rjw@...ysocki.net,
	rafael.j.wysocki@...el.com, linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org, ak@...ux.intel.com,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCH 3.11-rc1] crypto: Fix boot failure due to moduledependency.

Tim Chen wrote:
> On Fri, 2013-07-19 at 16:37 -0700, Tim Chen wrote:
> > Herbert,
> > 
> > I've tried the module alias approach (see my earlier mail with patch) 
> > but it didn't seem to load things properly.  Can you check to see if 
> > there's anything I did incorrectly.
> > 
> > Tim
> 
> I fixed a missing request_module statement in crct10dif library.  
> So now things work if I have the following config:
> 
> CONFIG_CRYPTO_CRCT10DIF=m
> CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m
> CONFIG_CRC_T10DIF=m
> 
> However, when I have the library and generic algorithm compiled in,
> I do not see the PCLMULQDQ version loaded.
> 
> CONFIG_CRYPTO_CRCT10DIF=y
> CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m
> CONFIG_CRC_T10DIF=y
> 
> Perhaps I am initiating the crct10dif library at a really early
> stage when things are compiled in, where the module is not in 
> initramfs?  In that case, perhaps we should only allow 
> PCLMUL version to be compiled in
> and not exist as a module?

I think that use of request_module("crct10dif") does not help loading
crct10dif-pclmul.ko when CONFIG_CRC_T10DIF=y CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m ,
for there is no / directory (note that the initramfs is not yet mounted as /
for loading modules which are not in vmlinux) when any module_init() functions
which are in vmlinux are called.
--
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/