tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: caa1ae20bcc64a80625a9449240580f5190ed3a0 commit: 426b9efea56f9b065151d165caab2ebd32906505 [16901/30000] mm: Add sysctl to clear free list pages config: x86_64-randconfig-r121-20240313 (https://download.01.org/0day-ci/archive/20240313/202403131805.usWE0GjN-lkp@i...) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240313/202403131805.usWE0GjN-lkp@i...) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202403131805.usWE0GjN-lkp@intel.com/ sparse warnings: (new ones prefixed by >>)

...

mm/clear_freelist_page.c:141:50: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected void * @@ got void [noderef] __user *buffer @@ mm/clear_freelist_page.c:141:50: sparse: expected void * mm/clear_freelist_page.c:141:50: sparse: got void [noderef] __user *buffer mm/clear_freelist_page.c:155:36: sparse: sparse: incorrect type in initializer (incompatible argument 3 (different address spaces)) @@ expected int ( [usertype] *proc_handler )( ... ) @@ got int ( * )( ... ) @@ mm/clear_freelist_page.c:155:36: sparse: expected int ( [usertype] *proc_handler )( ... ) mm/clear_freelist_page.c:155:36: sparse: got int ( * )( ... )

vim +141 mm/clear_freelist_page.c 133 134 static int sysctl_clear_freelist_handler(struct ctl_table *table, int write, 135 void __user *buffer, size_t *lenp, loff_t *ppos) 136 { 137 int ret; 138 int val; 139 140 table->data = &val;

141 ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); 142 143 if (!ret && write) 144 clear_freelist_pages(); 145 146 return ret; 147 } 148 149 static struct ctl_table clear_freelist_table[] = { 150 { 151 .procname = "clear_freelist_pages", 152 .data = NULL, 153 .maxlen = sizeof(int), 154 .mode = 0200, 155 .proc_handler = &sysctl_clear_freelist_handler, 156 .extra1 = SYSCTL_ONE, 157 .extra2 = SYSCTL_ONE, 158 }, 159 { } 160 }; 161

-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki