Messages in this thread | | | Date | Wed, 7 Jul 2021 15:47:43 +0200 | From | David Sterba <> | Subject | Re: super.c:undefined reference to `__umoddi3' |
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On Tue, Jul 06, 2021 at 07:54:13PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 79160a603bdb51916226caf4a6616cc4e1c58a58 > commit: c49f71f60754acbff37505e1d16ca796bf8a8140 MIPS: Reinstate platform `__div64_32' handler
Is it caused by this patch? It seems to be only MIPS-related, otherwise we'd get reports from other 32bit arches in case of the emulated 64bit division.
> date: 3 months ago > config: mips-randconfig-r036-20210706 (attached as .config) > compiler: mipsel-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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c49f71f60754acbff37505e1d16ca796bf8a8140 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout c49f71f60754acbff37505e1d16ca796bf8a8140 > # save the attached .config to linux build tree > mkdir build_dir > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@intel.com> > > All errors (new ones prefixed by >>): > > mipsel-linux-ld: fs/btrfs/super.o: in function `btrfs_statfs': > super.c:(.text+0xed4): undefined reference to `__udivdi3' > mipsel-linux-ld: super.c:(.text+0xf14): undefined reference to `__umoddi3' > mipsel-linux-ld: super.c:(.text+0xf6c): undefined reference to `__udivdi3'
If you'd like to get that analyzed in the sources, please post the snippet related to the binary address .text+0xf14 or .text+0xf6c .
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