[net-next:master 43/71] WARNING: modpost: vmlinux.o(__ex_table+0x1150): Section mismatch in reference from the (unknown reference) (unknown) to the variable .rodata.str1.4:.LC2

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head:   0f091e43310f5c292b7094f9f115e651358e8053
commit: 4718a471f1a7fc5cc943377c09300bb35138daf9 [43/71] netlink: remove duplicated nla_need_padding_for_64bit() check
config: riscv-randconfig-r006-20200828 (attached as .config)
compiler: riscv32-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 4718a471f1a7fc5cc943377c09300bb35138daf9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

<< WARNING: modpost: vmlinux.o(__ex_table+0xf80): Section mismatch in reference from the (unknown reference) (unknown) to the variable .rodata.str1.4:.LC6

quoted

WARNING: modpost: vmlinux.o(__ex_table+0x1150): Section mismatch in reference from the (unknown reference) (unknown) to the variable .rodata.str1.4:.LC2

FATAL: modpost: The relocation at __ex_table+0x1150 references
section ".rodata.str1.4" which is not executable, IOW
it is not possible for the kernel to fault
at that address.  Something is seriously wrong
and should be fixed.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org