Hi Aditya,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git master
head:   c433570458e49bccea5c551df628d058b3526289
commit: f0fb9b288d0a7e9cc324ae362e2dfd2cc2217ded [2/22] ipv6/route: Add a missing check on proc_dointvec
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout f0fb9b288d0a7e9cc324ae362e2dfd2cc2217ded
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

>> ERROR: "ia64_delay_loop" [drivers/spi/spi-thunderx.ko] undefined!
>> ERROR: "__sw_hweight8" [drivers/net/wireless/mediatek/mt76/mt76.ko] undefined!
>> ERROR: "ia64_delay_loop" [drivers/net/phy/mdio-cavium.ko] undefined!

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