On Thu, Aug 19, 2021 at 07:58:05PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 33e65b1f975cd2814fc0ea9617250fc4c1d7a553 > commit: 4b499755e1024f97e75411920a404b357af6e153 [8015/9113] ksmbd: fix lookup on idmapped mounts > config: nios2-randconfig-r033-20210819 (attached as .config) > compiler: nios2-linux-gcc (GCC) 11.2.0 > 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/next/linux-next.git/commit/?id=4b499755e1024f97e75411920a404b357af6e153 > git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git fetch --no-tags linux-next master > git checkout 4b499755e1024f97e75411920a404b357af6e153 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nios2 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> I think I mentioned this in another place somewhere. This patch depends on work that is currently in David's (Sterba) btrfs for-next tree that adds a new idmapping aware vfs helper "lookup_one()". Christian