On Tue, Apr 15, 2025 at 9:43 PM kernel test robot <l...@intel.com> wrote: > > Hi Mercier, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on bpf-next/net] > [also build test ERROR on bpf-next/master bpf/master linus/master v6.15-rc2 > next-20250415] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: > https://github.com/intel-lab-lkp/linux/commits/T-J-Mercier/dma-buf-Rename-and-expose-debugfs-symbols/20250415-065354 > base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git net > patch link: > https://lore.kernel.org/r/20250414225227.3642618-3-tjmercier%40google.com > patch subject: [PATCH 2/4] bpf: Add dmabuf iterator > config: i386-buildonly-randconfig-005-20250416 > compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project > 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) > reproduce (this is a W=1 build): > > 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 <l...@intel.com> > | Closes: > https://lore.kernel.org/oe-kbuild-all/202504161015.x2xlaha2-...@intel.com/ > > All errors (new ones prefixed by >>): > > >> ld.lld: error: undefined symbol: dmabuf_debugfs_list_mutex > >>> referenced by dmabuf_iter.c:44 (kernel/bpf/dmabuf_iter.c:44) > >>> vmlinux.o:(dmabuf_iter_seq_next) > >>> referenced by dmabuf_iter.c:53 (kernel/bpf/dmabuf_iter.c:53) > >>> vmlinux.o:(dmabuf_iter_seq_next) > >>> referenced by dmabuf_iter.c:26 (kernel/bpf/dmabuf_iter.c:26) > >>> vmlinux.o:(dmabuf_iter_seq_start) > >>> referenced 1 more times > -- > >> ld.lld: error: undefined symbol: dma_buf_put > >>> referenced by dmabuf_iter.c:45 (kernel/bpf/dmabuf_iter.c:45) > >>> vmlinux.o:(dmabuf_iter_seq_next) > >>> referenced by dmabuf_iter.c:90 (kernel/bpf/dmabuf_iter.c:90) > >>> vmlinux.o:(dmabuf_iter_seq_stop) > -- > >> ld.lld: error: undefined symbol: dmabuf_debugfs_list > >>> referenced by list.h:354 (include/linux/list.h:354) > >>> vmlinux.o:(dmabuf_iter_seq_next) > >>> referenced by dmabuf_iter.c:0 (kernel/bpf/dmabuf_iter.c:0) > >>> vmlinux.o:(dmabuf_iter_seq_start) > >>> referenced by list.h:364 (include/linux/list.h:364) > >>> vmlinux.o:(dmabuf_iter_seq_start) > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
This is due to no CONFIG_DMA_SHARED_BUFFER. Fixed by: --- a/kernel/bpf/Makefile +++ b/kernel/bpf/Makefile @@ -53,7 +53,7 @@ obj-$(CONFIG_BPF_SYSCALL) += relo_core.o obj-$(CONFIG_BPF_SYSCALL) += btf_iter.o obj-$(CONFIG_BPF_SYSCALL) += btf_relocate.o obj-$(CONFIG_BPF_SYSCALL) += kmem_cache_iter.o -ifeq ($(CONFIG_DEBUG_FS),y) +ifeq ($(CONFIG_DMA_SHARED_BUFFER)$(CONFIG_DEBUG_FS),yy) obj-$(CONFIG_BPF_SYSCALL) += dmabuf_iter.o endif
