lkml.org 
[lkml]   [2022]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectinclude/linux/eventpoll.h:81:13: sparse: sparse: restricted __poll_t degrades to integer
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

\
 
 \ /
  Last update: 2022-02-23 13:47    [W:0.023 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site