tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 1c33d0b3f9230be83d0a9b8b7b292861cfd72534 commit: bad4d8833739acc8eef306e7ad5c7877f9f4f0fb [15383/21781] etmem: add etmem-scan feature config: x86_64-randconfig-r131-20240304 (https://download.01.org/0day-ci/archive/20240308/202403081509.2XWi5xzk-lkp@i...) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240308/202403081509.2XWi5xzk-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/202403081509.2XWi5xzk-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)

...

fs/proc/etmem_scan.c:244:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *buf @@ got void *buf @@

fs/proc/etmem_scan.c:244:18: sparse: expected void [noderef] __user *buf fs/proc/etmem_scan.c:244:18: sparse: got void *buf

...

fs/proc/etmem_scan.c:1032:40: sparse: sparse: incorrect type in assignment (incompatible argument 2 (different address spaces)) @@ expected long ( *extern [addressable] [assigned] [toplevel] read )( ... ) @@ got long ( * )( ... ) @@

fs/proc/etmem_scan.c:1032:40: sparse: expected long ( *extern [addressable] [assigned] [toplevel] read )( ... ) fs/proc/etmem_scan.c:1032:40: sparse: got long ( * )( ... ) In file included from fs/proc/etmem_scan.c:2: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated.

vim +244 fs/proc/etmem_scan.c

240 241 static void setup_page_idle_ctrl(struct page_idle_ctrl *pic, void *buf, 242 int buf_size, unsigned int flags) 243 {

244 pic->buf = buf;

245 pic->buf_size = buf_size; 246 pic->bytes_copied = 0; 247 pic->next_hva = 0; 248 pic->gpa_to_hva = 0; 249 pic->restart_gpa = 0; 250 pic->last_va = 0; 251 pic->flags = flags; 252 } 253