From: David Sterba <dsterba@suse.cz>
To: kernel test robot <lkp@intel.com>
Cc: "Maciej W. Rozycki" <macro@orcam.me.uk>,
kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Subject: Re: super.c:undefined reference to `__umoddi3'
Date: Wed, 7 Jul 2021 15:47:43 +0200 [thread overview]
Message-ID: <20210707134743.GJ2610@twin.jikos.cz> (raw)
In-Reply-To: <202107061952.nZ61qqwh-lkp@intel.com>
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 .
next prev parent reply other threads:[~2021-07-07 13:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-06 11:54 super.c:undefined reference to `__umoddi3' kernel test robot
2021-07-07 13:47 ` David Sterba [this message]
2021-07-07 14:20 ` Maciej W. Rozycki
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