linux-kernel - Re: [build bug] SCTP, net/sctp/auth.c, ./net/rxrpc/ar-key.c fails to build

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Date:	Wed, 28 Nov 2007 13:47:30 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	linux-kernel@...r.kernel.org
Cc:	David Howells <dhowells@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Vlad Yasevich <vladislav.yasevich@...com>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [build bug] SCTP, net/sctp/auth.c, ./net/rxrpc/ar-key.c fails
	to build


* Ingo Molnar <mingo@...e.hu> wrote:

> a similar build bug happens with latest -git as well, with SCTP:
> 
>  net/built-in.o: In function `rxrpc_destroy_s':
>  ar-key.c:(.text+0xc5a2b): undefined reference to `crypto_free_tfm'
>  net/built-in.o: In function `rxrpc_instantiate_s':
>  ar-key.c:(.text+0xc5ed9): undefined reference to `crypto_alloc_base'
>  net/built-in.o: In function `sctp_endpoint_put':
>  : undefined reference to `crypto_free_tfm'
>  net/built-in.o: In function `sctp_inet_listen':
>  : undefined reference to `crypto_free_tfm'
>  net/built-in.o: In function `sctp_auth_destroy_hmacs':
>  : undefined reference to `crypto_free_tfm'
>  net/built-in.o: In function `sctp_auth_init_hmacs':
>  : undefined reference to `crypto_alloc_base'
> 
> this is a build regression over v2.6.23. config attached.

the patch below fix it (or rather, works it around).

	Ingo

------------->
Subject: SCTP: fix build bug
From: Ingo Molnar <mingo@...e.hu>

fix build bug:

 net/built-in.o: In function `rxrpc_destroy_s':
 ar-key.c:(.text+0xc5a2b): undefined reference to `crypto_free_tfm'
 net/built-in.o: In function `rxrpc_instantiate_s':
 ar-key.c:(.text+0xc5ed9): undefined reference to `crypto_alloc_base'
 net/built-in.o: In function `sctp_endpoint_put':
 : undefined reference to `crypto_free_tfm'
 net/built-in.o: In function `sctp_inet_listen':
 : undefined reference to `crypto_free_tfm'
 net/built-in.o: In function `sctp_auth_destroy_hmacs':
 : undefined reference to `crypto_free_tfm'
 net/built-in.o: In function `sctp_auth_init_hmacs':
 : undefined reference to `crypto_alloc_base'

Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 net/sctp/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/net/sctp/Kconfig
===================================================================
--- linux.orig/net/sctp/Kconfig
+++ linux/net/sctp/Kconfig
@@ -6,7 +6,7 @@ menuconfig IP_SCTP
 	tristate "The SCTP Protocol (EXPERIMENTAL)"
 	depends on INET && EXPERIMENTAL
 	depends on IPV6 || IPV6=n
-	select CRYPTO if SCTP_HMAC_SHA1 || SCTP_HMAC_MD5
+	select CRYPTO
 	select CRYPTO_HMAC if SCTP_HMAC_SHA1 || SCTP_HMAC_MD5
 	select CRYPTO_SHA1 if SCTP_HMAC_SHA1
 	select CRYPTO_MD5 if SCTP_HMAC_MD5
-
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