Date: Thu, 21 Apr 2016 12:11:05 +0800
From: Philip Li <philip.li@intel.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: kbuild test robot <fengguang.wu@intel.com>, kbuild-all@01.org,
        linux-kernel@vger.kernel.org, Ingo Molnar <mingo@kernel.org>
Subject: Re: /tmp/ccTcF8pg.s: Error: .size expression for
 aes_p8_set_encrypt_key does not evaluate to a constant
Message-ID: <20160421041105.GB4659@intel.com>
References: <201604171354.ko69rA2J%fengguang.wu@intel.com>
 <20160418150840.GA16356@redhat.com>
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On Mon, Apr 18, 2016 at 05:08:41PM +0200, Oleg Nesterov wrote:
> On 04/17, kbuild test robot wrote:
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   b9f5dba225aede4518ab0a7374c2dc38c7c049ce
> > commit: 5eeb50de42fd3251845d03c556db012267c72b3f uprobes: Change handle_trampoline() to flush the frames invalidated by longjmp()
> > date:   9 months ago
> 
> and this patch changed the single function in arch-neutral kernel/events/uprobes.c,
> this certainly looks like a false positive.

thanks for feedback, we will look into this to fix the false positive.

> 
> > config: powerpc-allyesconfig (attached as .config)
> > reproduce:
> >         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         git checkout 5eeb50de42fd3251845d03c556db012267c72b3f
> >         # save the attached .config to linux build tree
> >         make.cross ARCH=powerpc 
> > 
> > All errors (new ones prefixed by >>):
> > 
> >    /tmp/ccTcF8pg.s: Assembler messages:
> > >> /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_set_encrypt_key does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for .aes_p8_set_encrypt_key does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_set_decrypt_key does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for .aes_p8_set_decrypt_key does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_encrypt does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for .aes_p8_encrypt does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_decrypt does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for .aes_p8_decrypt does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_cbc_encrypt does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for .aes_p8_cbc_encrypt does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_ctr32_encrypt_blocks does not evaluate to a constant
> > >> /tmp/ccTcF8pg.s: Error: .size expression for .aes_p8_ctr32_encrypt_blocks does not evaluate to a constant
> > --
> >    /tmp/ccB2I6Jo.s: Assembler messages:
> > >> /tmp/ccB2I6Jo.s: Error: .size expression for gcm_init_p8 does not evaluate to a constant
> > >> /tmp/ccB2I6Jo.s: Error: .size expression for .gcm_init_p8 does not evaluate to a constant
> > >> /tmp/ccB2I6Jo.s: Error: .size expression for gcm_gmult_p8 does not evaluate to a constant
> > >> /tmp/ccB2I6Jo.s: Error: .size expression for .gcm_gmult_p8 does not evaluate to a constant
> > >> /tmp/ccB2I6Jo.s: Error: .size expression for gcm_ghash_p8 does not evaluate to a constant
> > >> /tmp/ccB2I6Jo.s: Error: .size expression for .gcm_ghash_p8 does not evaluate to a constant
> > 
> > ---
> > 0-DAY kernel test infrastructure                Open Source Technology Center
> > https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
> 
> 
>