Hi Chenwandun, It's probably a bug fix that unveils the link errors.
tree: git://anongit.freedesktop.org/drm/drm-tip drm-tip
head: f5cfd96ad87b58bf3b5dfa5365f8beb8bac15a38
commit: 68acde7629d75d460760a3124c52f358eecc6d26 [1865/1875] drm/dp_mst: fix
gcc compile error
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 7.4.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -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 <l...@intel.com>
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
https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
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