[kernelnewbies]a question about checkpatch.pl

[lx]

hi all:
I used the script of checkpatch.pl, but some error messages appeared.
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[root at localhost kernel_test]# perl checkpatch.pl -f task_01.c
Nested quantifiers in regex; marked by <-- HERE in m/(\((?:[^\(\)]++ <--
HERE |(?-1))*\))/ at checkpatch.pl line 444.
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This is something with checkpatch.pl ? How to fix it.

Thank you.