Re: [PATCH 2/7] arm: ftrace: Add call modify mechanism

From: kbuild test robot
Date: Wed Dec 07 2016 - 05:38:45 EST


Hi Abel,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.9-rc8 next-20161206]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Abel-Vesa/arm-Add-livepatch-support/20161207-074210
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
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
# save the attached .config to linux build tree
make.cross ARCH=arm

Note: the linux-review/Abel-Vesa/arm-Add-livepatch-support/20161207-074210 HEAD 49113edc744f38a682a4afa9e904384bb00f2988 builds fine.
It only hurts bisectibility.

All errors (new ones prefixed by >>):

>> arch/arm/kernel/ftrace.c:163:5: error: redefinition of 'ftrace_modify_call'
int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
^~~~~~~~~~~~~~~~~~
In file included from arch/arm/kernel/ftrace.c:15:0:
include/linux/ftrace.h:595:19: note: previous definition of 'ftrace_modify_call' was here
static inline int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
^~~~~~~~~~~~~~~~~~

vim +/ftrace_modify_call +163 arch/arm/kernel/ftrace.c

157 }
158 #endif
159
160 return ret;
161 }
162
> 163 int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
164 unsigned long addr)
165 {
166 unsigned long pc = rec->ip;

---
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