Hi Mauro, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 178e834c47b0d01352c48730235aae69898fbc02 commit: 03fbdb2fc2b8bb27b0ee0534fd3e9c57cdc3854a media: move videobuf2 to drivers/media/common date: 7 weeks ago config: x86_64-randconfig-s5-02131532 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: git checkout 03fbdb2fc2b8bb27b0ee0534fd3e9c57cdc3854a # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/media/common/videobuf/videobuf2-core.o: In function `__read_once_size': >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_queue' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_queue' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_queue' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_queue' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_done' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_done' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_done' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_buf_done' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_qbuf' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_qbuf' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_qbuf' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_qbuf' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_dqbuf' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_dqbuf' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_dqbuf' >> include/linux/compiler.h:183: undefined reference to `__tracepoint_vb2_dqbuf' drivers/media/common/videobuf/videobuf2-v4l2.o: In function `vb2_poll': drivers/media/common/videobuf/videobuf2-v4l2.c:678: undefined reference to `video_devdata' drivers/media/common/videobuf/videobuf2-v4l2.c:685: undefined reference to `v4l2_event_pending' drivers/media/common/videobuf/videobuf2-v4l2.o: In function `vb2_ioctl_reqbufs': drivers/media/common/videobuf/videobuf2-v4l2.c:714: undefined reference to `video_devdata' drivers/media/common/videobuf/videobuf2-v4l2.o: In function `vb2_ioctl_create_bufs': drivers/media/common/videobuf/videobuf2-v4l2.c:733: undefined reference to `video_devdata' drivers/media/common/videobuf/videobuf2-v4l2.o: In function `vb2_ioctl_prepare_buf': drivers/media/common/videobuf/videobuf2-v4l2.c:759: undefined reference to `video_devdata' drivers/media/common/videobuf/videobuf2-v4l2.o: In function `vb2_ioctl_querybuf': drivers/media/common/videobuf/videobuf2-v4l2.c:769: undefined reference to `video_devdata' drivers/media/common/videobuf/videobuf2-v4l2.o: In function `vb2_ioctl_qbuf': drivers/media/common/videobuf/videobuf2-v4l2.c:778: undefined reference to `video_devdata' drivers/media/common/videobuf/videobuf2-v4l2.o:drivers/media/common/videobuf/videobuf2-v4l2.c:788: more undefined references to `video_devdata' follow drivers/media/common/videobuf/videobuf2-v4l2.o: In function `_vb2_fop_release': drivers/media/common/videobuf/videobuf2-v4l2.c:848: undefined reference to `v4l2_fh_release' vim +183 include/linux/compiler.h d976441f Andrey Ryabinin 2015-10-19 179 d976441f Andrey Ryabinin 2015-10-19 180 static __always_inline d976441f Andrey Ryabinin 2015-10-19 181 void __read_once_size(const volatile void *p, void *res, int size) 230fa253 Christian Borntraeger 2014-11-25 182 { d976441f Andrey Ryabinin 2015-10-19 @183 __READ_ONCE_SIZE; 230fa253 Christian Borntraeger 2014-11-25 184 } d976441f Andrey Ryabinin 2015-10-19 185 :::::: The code at line 183 was first introduced by commit :::::: d976441f44bc5d48635d081d277aa76556ffbf8b compiler, atomics, kasan: Provide READ_ONCE_NOCHECK() :::::: TO: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> :::::: CC: Ingo Molnar <mingo@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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