On Tue, Mar 16, 2021 at 01:23:08AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 1e28eed17697bcf343c6743f0028cc3b5dd88bf0 > commit: 34dc2efb39a231280fd6696a59bbe712bf3c5c4a memblock: fix section mismatch warning > date: 2 days ago > config: arm64-randconfig-r013-20210315 (attached as .config) > compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a28facba1ccdc957f386b7753f4958307f1bfde8) > 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 > # install arm64 cross compiling tool for clang build > # apt-get install binutils-aarch64-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34dc2efb39a231280fd6696a59bbe712bf3c5c4a > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout 34dc2efb39a231280fd6696a59bbe712bf3c5c4a > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All warnings (new ones prefixed by >>, old ones prefixed by <<): > > >> WARNING: modpost: vmlinux.o(.text+0x74fea4): Section mismatch in reference from the function memblock_find_in_range_node() to the function .init.text:memblock_bottom_up() > The function memblock_find_in_range_node() references > the function __init memblock_bottom_up(). > This is often because memblock_find_in_range_node lacks a __init > annotation or the annotation of memblock_bottom_up is wrong. I don't have clang-13 setup handy so I could not check, but I think this should be the fix: diff --git a/include/linux/memblock.h b/include/linux/memblock.h index d13e3cd938b4..5984fff3f175 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -460,7 +460,7 @@ static inline void memblock_free_late(phys_addr_t base, phys_addr_t size) /* * Set the allocation direction to bottom-up or top-down. */ -static inline __init void memblock_set_bottom_up(bool enable) +static inline __init_memblock void memblock_set_bottom_up(bool enable) { memblock.bottom_up = enable; } @@ -470,7 +470,7 @@ static inline __init void memblock_set_bottom_up(bool enable) * if this is true, that said, memblock will allocate memory * in bottom-up direction. */ -static inline __init bool memblock_bottom_up(void) +static inline __init_memblock bool memblock_bottom_up(void) { return memblock.bottom_up; } -- Sincerely yours, Mike.
