[zwisler:ext4_PMD_allocation 41/404] WARNING: mm/built-in.o(.text+0x79ac): Section mismatch in reference from the (unknown reference) (unknown) to the variable .init.rodata:__setup_str_setup_fail_page_alloc

kbuild test robot <fengguang.wu@xxxxxxxxx> · Sun, 12 Feb 2017 11:26:18 +0800

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/zwisler/linux.git ext4_PMD_allocation
head:   c0dd530d5927f9bdd798cdfad4842797a58824ac
commit: 3a7f60d64ba4e0c6e96f799f5b93709d963d2495 [41/404] mm, slab: rename kmalloc-node cache to kmalloc-<size>
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3a7f60d64ba4e0c6e96f799f5b93709d963d2495
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

>> WARNING: mm/built-in.o(.text+0x79ac): Section mismatch in reference from the (unknown reference) (unknown) to the variable .init.rodata:__setup_str_setup_fail_page_alloc
   The function (unknown)() references
   the variable __initconst __setup_str_setup_fail_page_alloc.
   This is often because (unknown) lacks a __initconst
   annotation or the annotation of __setup_str_setup_fail_page_alloc is wrong.

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