Messages in this thread | | | Date | Wed, 23 Feb 2022 20:47:19 +0800 | From | kernel test robot <> | Subject | include/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 5c1ee569660d4a205dced9cb4d0306b907fb7599 commit: 249dbe74d3c4b568a623fb55c56cddf19fdf0b89 ARM: 9108/1: oabi-compat: rework epoll_wait/epoll_pwait emulation date: 6 months ago config: riscv-randconfig-s031-20220221 (https://download.01.org/0day-ci/archive/20220223/202202231910.H30peLyl-lkp@intel.com/config) compiler: riscv32-linux-gcc (GCC) 11.2.0 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: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=249dbe74d3c4b568a623fb55c56cddf19fdf0b89 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 249dbe74d3c4b568a623fb55c56cddf19fdf0b89 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>) fs/eventpoll.c: note: in included file: >> include/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer >> include/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer include/linux/eventpoll.h:81:13: sparse: sparse: cast from restricted __poll_t
vim +81 include/linux/eventpoll.h
70 71 #if defined(CONFIG_ARM) && defined(CONFIG_OABI_COMPAT) 72 /* ARM OABI has an incompatible struct layout and needs a special handler */ 73 extern struct epoll_event __user * 74 epoll_put_uevent(__poll_t revents, __u64 data, 75 struct epoll_event __user *uevent); 76 #else 77 static inline struct epoll_event __user * 78 epoll_put_uevent(__poll_t revents, __u64 data, 79 struct epoll_event __user *uevent) 80 { > 81 if (__put_user(revents, &uevent->events) || 82 __put_user(data, &uevent->data)) 83 return NULL; 84 85 return uevent+1; 86 } 87 #endif 88
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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