Re: undefined reference to `printk'

From: Yoshinori Sato
Date: Mon Jun 27 2016 - 01:15:34 EST


I think fix it.
default_eit_handler rewritten in C, it is best way.
But it test difficult.

Signed-off-by: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
---
arch/m32r/kernel/entry.S | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S
index c639bfa..a71105c 100644
--- a/arch/m32r/kernel/entry.S
+++ b/arch/m32r/kernel/entry.S
@@ -419,6 +419,12 @@ ENTRY(default_eit_handler)
infinit:
bra infinit

+#ifndef CONFIG_PRINTK
+printk:
+ jmp lr
+ .fillinsn
+#endif
+
#ifdef CONFIG_ MMU
/*
* Access Exception handler
2.7.0

On Sun, 26 Jun 2016 10:19:50 +0900,
kbuild test robot wrote:
>
> Hi,
>
> FYI, the error/warning still remains.
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: da2f6aba4a21f8da3331e5251a117c52764da579
> commit: 5d2acfc7b974bbd3858b4dd3f2cdc6362dd8843a kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT
> date: 2 years, 3 months ago
> config: m32r-allnoconfig (attached as .config)
> compiler: m32r-linux-gcc (GCC) 4.9.0
> 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 5d2acfc7b974bbd3858b4dd3f2cdc6362dd8843a
> # save the attached .config to linux build tree
> make.cross ARCH=m32r
>
> All errors (new ones prefixed by >>):
>
> arch/m32r/kernel/built-in.o: In function `default_eit_handler':
> >> (.text+0x3f8): undefined reference to `printk'
> arch/m32r/kernel/built-in.o: In function `default_eit_handler':
> (.text+0x3f8): relocation truncated to fit: R_M32R_26_PCREL_RELA against undefined symbol `printk'
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation

--
Yoshinori Sato
<ysato@xxxxxxxxxxxxxxxxxxxx>