tree:   https://github.com/hnaz/linux-mm master
head:   2932a9e66c580f3c8d95ec27716d437198fb4c94
commit: 7567bc08648e3580750cc50173e644ef58831e91 [408/421] mm: annotate a data race in page_zonenum()
config: riscv-randconfig-r031-20200923 (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
        # https://github.com/hnaz/linux-mm/commit/7567bc08648e3580750cc50173e644ef58831e91
        git remote add hnaz-linux-mm https://github.com/hnaz/linux-mm
        git fetch --no-tags hnaz-linux-mm master
        git checkout 7567bc08648e3580750cc50173e644ef58831e91
        # 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 <lkp@intel.com>

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

>> WARNING: modpost: vmlinux.o(.text+0x1db1e64): Section mismatch in reference from the function dccp_sysctl_exit() to the variable .init.text:.L0
The function dccp_sysctl_exit() references
the variable __init .L0 .
This is often because dccp_sysctl_exit lacks a __init
annotation or the annotation of .L0 is wrong.

The below error/warnings are from parent commit:
<< WARNING: modpost: vmlinux.o(.text+0xab3f4): Section mismatch in reference from the function restrict_link_by_builtin_and_secondary_trusted() to the variable .init.text:.LBB1699
<< WARNING: modpost: vmlinux.o(.text+0x1d6fff0): Section mismatch in reference from the function l2cap_chan_reconfigure() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x1db01f4): Section mismatch in reference from the function tfrc_calc_x() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x1db0578): Section mismatch in reference from the function tfrc_invert_loss_event_rate() to the variable .init.text:.L0
<< WARNING: modpost: vmlinux.o(.text+0x1ddd3e4): Section mismatch in reference from the function sctp_transport_get_idx() to the variable .init.text:.LBB15097
<< WARNING: modpost: vmlinux.o(.text+0x1deb8a0): Section mismatch in reference from the function sctp_auth_send_cid() to the variable .init.text:.LBB4945
<< WARNING: modpost: vmlinux.o(.text+0x1deb8ec): Section mismatch in reference from the function sctp_auth_recv_cid() to the variable .init.text:.LBB4946
<< WARNING: modpost: vmlinux.o(__ex_table+0x11b0): Section mismatch in reference from the (unknown reference) (unknown) to the variable ___ksymtab+PDE_DATA:__ksymtab_PDE_DATA

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