Hi Julian, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 6145d80cfc62e3ed8f16ff584d6287e6d88b82b9 commit: 969f31e9eae3fb5d8388677c2ec34c2f447f7376 [8225/11059] lib: fix kconfig dependency on ARCH_WANT_FRAME_POINTERS config: csky-randconfig-s032-20210408 (attached as .config) compiler: csky-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-279-g6d5d9b42-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... 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 969f31e9eae3fb5d8388677c2ec34c2f447f7376 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=csky If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/fpga/dfl.c:1828:16: sparse: expected unsigned int *__pu_addr drivers/fpga/dfl.c:1828:16: sparse: got unsigned int [noderef] [usertype] __user * drivers/fpga/dfl.c: note: in included file (through arch/csky/include/asm/io.h, include/linux/io.h, include/linux/irq.h, ...): include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:299:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:299:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:299:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:299:22: sparse: got restricted __le32 [usertype] -- drivers/platform/goldfish/goldfish_pipe.c:406:13: sparse: expected void const *addr drivers/platform/goldfish/goldfish_pipe.c:406:13: sparse: got char [noderef] __user *buffer drivers/platform/goldfish/goldfish_pipe.c:500:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got int @@ drivers/platform/goldfish/goldfish_pipe.c:500:24: sparse: expected restricted __poll_t drivers/platform/goldfish/goldfish_pipe.c:500:24: sparse: got int drivers/platform/goldfish/goldfish_pipe.c: note: in included file (through arch/csky/include/asm/io.h, include/linux/io.h, include/linux/irq.h, ...): include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:299:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:299:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:299:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:299:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:299:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:299:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:299:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:299:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:299:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:299:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32 -- drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1824:9: sparse: expected void const *addr drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1824:9: sparse: got unsigned int const [noderef] __user *__gu_ptr drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1826:9: sparse: expected unsigned int *__pu_addr drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1826:9: sparse: got unsigned int [noderef] [usertype] __user * drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1829:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *addr @@ got unsigned int const [noderef] __user *__gu_ptr @@ drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1829:9: sparse: expected void const *addr drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1829:9: sparse: got unsigned int const [noderef] __user *__gu_ptr drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1841:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *addr @@ got unsigned int const [noderef] __user *__gu_ptr @@ drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1841:9: sparse: expected void const *addr drivers/staging/rtl8712/rtl871x_ioctl_linux.c:1841:9: sparse: got unsigned int const [noderef] __user *__gu_ptr vim +1828 drivers/fpga/dfl.c 322b598be4d9b9 Xu Yilun 2020-06-16 1815 322b598be4d9b9 Xu Yilun 2020-06-16 1816 /** 322b598be4d9b9 Xu Yilun 2020-06-16 1817 * dfl_feature_ioctl_get_num_irqs - dfl feature _GET_IRQ_NUM ioctl interface. 322b598be4d9b9 Xu Yilun 2020-06-16 1818 * @pdev: the feature device which has the sub feature 322b598be4d9b9 Xu Yilun 2020-06-16 1819 * @feature: the dfl sub feature 322b598be4d9b9 Xu Yilun 2020-06-16 1820 * @arg: ioctl argument 322b598be4d9b9 Xu Yilun 2020-06-16 1821 * 322b598be4d9b9 Xu Yilun 2020-06-16 1822 * Return: 0 on success, negative error code otherwise. 322b598be4d9b9 Xu Yilun 2020-06-16 1823 */ 322b598be4d9b9 Xu Yilun 2020-06-16 1824 long dfl_feature_ioctl_get_num_irqs(struct platform_device *pdev, 322b598be4d9b9 Xu Yilun 2020-06-16 1825 struct dfl_feature *feature, 322b598be4d9b9 Xu Yilun 2020-06-16 1826 unsigned long arg) 322b598be4d9b9 Xu Yilun 2020-06-16 1827 { 322b598be4d9b9 Xu Yilun 2020-06-16 @1828 return put_user(feature->nr_irqs, (__u32 __user *)arg); 322b598be4d9b9 Xu Yilun 2020-06-16 1829 } 322b598be4d9b9 Xu Yilun 2020-06-16 1830 EXPORT_SYMBOL_GPL(dfl_feature_ioctl_get_num_irqs); 322b598be4d9b9 Xu Yilun 2020-06-16 1831 :::::: The code at line 1828 was first introduced by commit :::::: 322b598be4d9b9090cda560c4caab78704615ab4 fpga: dfl: introduce interrupt trigger setting API :::::: TO: Xu Yilun <yilun.xu(a)intel.com&gt; :::::: CC: Moritz Fischer <mdf(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org