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Subjectstacktrace.c:undefined reference to `save_stack_trace'
Hi Chenwandun,

It's probably a bug fix that unveils the link errors.

tree: master
head: 81b6b96475ac7a4ebfceae9f16fb3758327adbfe
commit: 68acde7629d75d460760a3124c52f358eecc6d26 drm/dp_mst: fix gcc compile error
date: 4 weeks ago
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 7.4.0
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 68acde7629d75d460760a3124c52f358eecc6d26
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=m68k

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <>

All errors (new ones prefixed by >>):

kernel/stacktrace.o: In function `stack_trace_save':
>> stacktrace.c:(.text+0x120): undefined reference to `save_stack_trace'

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation
[unhandled content-type:application/gzip]
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