From: Herbert Xu Subject: Re: gcm.c:undefined reference to `crypto_aead_setauthsize' Date: Tue, 5 Apr 2016 15:19:30 +0800 Message-ID: <20160405071930.GA10527@gondor.apana.org.au> References: <201604012329.Nnqft6lQ%fengguang.wu@intel.com> <20160404140004.GA4006@gondor.apana.org.au> <831EE4E5E37DCC428EB295A351E662491431DEF5@shsmsx102.ccr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Wu, Fengguang" , Sabrina Dubroca , "kbuild-all@01.org" , "linux-kernel@vger.kernel.org" , Hannes Frederic Sowa , Linux Crypto Mailing List To: "Li, Philip" Return-path: Received: from helcar.hengli.com.au ([209.40.204.226]:51089 "EHLO helcar.hengli.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755277AbcDEHTs (ORCPT ); Tue, 5 Apr 2016 03:19:48 -0400 Content-Disposition: inline In-Reply-To: <831EE4E5E37DCC428EB295A351E662491431DEF5@shsmsx102.ccr.corp.intel.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: On Tue, Apr 05, 2016 at 07:15:21AM +0000, Li, Philip wrote: > > > > -----Original Message----- > > From: Herbert Xu [mailto:herbert@gondor.apana.org.au] > > Sent: Monday, April 4, 2016 10:00 PM > > To: Wu, Fengguang > > Cc: Sabrina Dubroca ; kbuild-all@01.org; > > linux-kernel@vger.kernel.org; Hannes Frederic Sowa > > ; Linux Crypto Mailing List > > > > Subject: Re: gcm.c:undefined reference to `crypto_aead_setauthsize' > > > > On Fri, Apr 01, 2016 at 03:02:30PM +0000, kbuild test robot wrote: > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > master > > > head: 6ddf37da05cd71bf9e43349d607e810b43c9008a > > > commit: c09440f7dcb304002dfced8c0fea289eb25f2da0 macsec: introduce > > IEEE 802.1AE driver > > > date: 3 weeks ago > > > config: x86_64-randconfig-s3-04012139 (attached as .config) > > > reproduce: > > > git checkout c09440f7dcb304002dfced8c0fea289eb25f2da0 > > > # save the attached .config to linux build tree > > > make ARCH=x86_64 > > > > > > All errors (new ones prefixed by >>): > > > > > > crypto/built-in.o: In function `gcm_enc_copy_hash': > > > >> gcm.c:(.text+0x278): undefined reference to `crypto_xor' > > > > GCM is y but AEAD is only m, yet GCM selects AEAD. Perhaps a kbuild bug? > Thanks Herbert, currently we use make randconfig to generate this kconfig file, is it possible this is still a valid settings? Sorry I didn't mean kbuild as in your build system, but kbuild as in the kernel kbuild subsystem. AFAICS, the Kconfig rules should forbid the situation in your config file where GCM=y but AEAD=m because GCM selects AEAD. So the fact that it happened either means that there is something that I am missing or that the kbuild subsystem is buggy. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt