Re: [next:master 452/458] undefined reference to `__bad_size_call_parameter'

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On Thu, 06 Mar 2014 22:48:11 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote:

> tree:   git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   0ffb2fe7b9c30082876fa3a17da018bf0632cf03
> commit: 3b0fc5a9f85472be761e51de110e0aa8d15e7f41 [452/458] sh: replace __get_cpu_var uses
> config: make ARCH=sh r7785rp_defconfig
> 
> All error/warnings:
> 
>    arch/sh/kernel/built-in.o: In function `kprobe_exceptions_notify':
> >> (.kprobes.text+0x8c8): undefined reference to `__bad_size_call_parameter'

This has me stumped - the same code 

	p = __this_cpu_read(current_kprobe);

works OK elsewhere in that file.  I'm suspecting a miscompile - it's
not unknown for gcc to screw up when we use this trick.

I can reproduce it with gcc-3.4.5 for sh.

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