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Re: /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_set_encrypt_key does not evaluate to a constant

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  Re: /tmp/ccTcF8pg.s: Error: .size expression for  aes_p8_set_encrypt_key does not evaluate to a constant Oleg Nesterov <oleg@redhat.com> - 2016-04-18 18:20 +0200
    Re: /tmp/ccTcF8pg.s: Error: .size expression for  aes_p8_set_encrypt_key does not evaluate to a constant Philip Li <philip.li@intel.com> - 2016-04-21 06:10 +0200

#1381869 — Re: /tmp/ccTcF8pg.s: Error: .size expression for aes_p8_set_encrypt_key does not evaluate to a constant

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.

> 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

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#1383861

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
> 
> 
> 

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