Hi Ethan, kernel test robot noticed the following build errors: [auto build test ERROR on e60bf5aa1a74c0652cd12d0cdc02f5c2b5fe5c74] url: https://github.com/intel-lab-lkp/linux/commits/Ethan-Zhao/PCI-make-pci_dev_is_disconnected-helper-public-for-other-drivers/20240222-170625 base: e60bf5aa1a74c0652cd12d0cdc02f5c2b5fe5c74 patch link: https://lore.kernel.org/r/20240222090251.2849702-4-haifeng.zhao%40linux.intel.com patch subject: [PATCH v13 3/3] iommu/vt-d: improve ITE fault handling if target device isn't valid config: x86_64-randconfig-074-20240226 (https://download.01.org/0day-ci/archive/20240226/202402261910.IZ3PGmH3-lkp@xxxxxxxxx/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240226/202402261910.IZ3PGmH3-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402261910.IZ3PGmH3-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: device_rbtree_find >>> referenced by dmar.c:1346 (drivers/iommu/intel/dmar.c:1346) >>> drivers/iommu/intel/dmar.o:(qi_submit_sync) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
