tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git nvme-passthru-wip.2 head: 7567defdb3c6a81e4114a03ddf3d6c158df81a76 commit: bc18161c9b80cf2d647710257f9716ee6c66fee4 [15/23] io_uring: add flag and helper for fixed-buffer uring-cmd config: x86_64-randconfig-a002-20211220 (https://download.01.org/0day-ci/archive/20211222/202112220658.XCmoVSe5-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?id=bc18161c9b80cf2d647710257f9716ee6c66fee4 git remote add axboe-block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git git fetch --no-tags axboe-block nvme-passthru-wip.2 git checkout bc18161c9b80cf2d647710257f9716ee6c66fee4 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All error/warnings (new ones prefixed by >>): In file included from fs/exec.c:66: >> include/linux/io_uring.h:58:5: warning: no previous prototype for 'io_uring_cmd_import_fixed' [-Wmissing-prototypes] 58 | int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, | ^~~~~~~~~~~~~~~~~~~~~~~~~ -- ld: kernel/exit.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: fs/exec.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: block/fops.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/host/core.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/host/ioctl.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/host/trace.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/host/zns.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/host/fault_inject.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/host/fabrics.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/host/fc.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: drivers/nvme/target/fcloop.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: net/socket.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: net/ipv4/tcp.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: net/ipv4/raw.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: net/ipv4/udp.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here ld: net/unix/scm.o: in function `io_uring_cmd_import_fixed': >> include/linux/io_uring.h:60: multiple definition of `io_uring_cmd_import_fixed'; kernel/fork.o:include/linux/io_uring.h:60: first defined here -- In file included from kernel/exit.c:65: >> include/linux/io_uring.h:58:5: warning: no previous prototype for 'io_uring_cmd_import_fixed' [-Wmissing-prototypes] 58 | int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, | ^~~~~~~~~~~~~~~~~~~~~~~~~ kernel/exit.c:1817:13: warning: no previous prototype for 'abort' [-Wmissing-prototypes] 1817 | __weak void abort(void) | ^~~~~ vim +60 include/linux/io_uring.h 34 35 static inline void io_uring_files_cancel(void) 36 { 37 if (current->io_uring) 38 __io_uring_cancel(false); 39 } 40 static inline void io_uring_task_cancel(void) 41 { 42 if (current->io_uring) 43 __io_uring_cancel(true); 44 } 45 static inline void io_uring_free(struct task_struct *tsk) 46 { 47 if (tsk->io_uring) 48 __io_uring_free(tsk); 49 } 50 #else 51 static inline void io_uring_cmd_done(struct io_uring_cmd *cmd, ssize_t ret) 52 { 53 } 54 static inline void io_uring_cmd_complete_in_task(struct io_uring_cmd *ioucmd, 55 void (*driver_cb)(struct io_uring_cmd *)) 56 { 57 } > 58 int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, 59 int rw, struct iov_iter *iter, void *ioucmd) > 60 { 61 return -1; 62 } 63 static inline struct sock *io_uring_get_socket(struct file *file) 64 { 65 return NULL; 66 } 67 static inline void io_uring_task_cancel(void) 68 { 69 } 70 static inline void io_uring_files_cancel(void) 71 { 72 } 73 static inline void io_uring_free(struct task_struct *tsk) 74 { 75 } 76 #endif 77 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org