tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 1048ba83fb1c00cd24172e23e8263972f6b5d9ac commit: 9f85cbe50aa044a46f0a22fda323fa27b80c82da RDMA/uverbs: Expose the new GID query API to user space date: 4 months ago config: sh-randconfig-s031-20210201 (attached as .config) compiler: sh4-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: v0.6.3-215-g0fb77bb6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9f85cbe50aa044a46f0a22fda323fa27b80c82da git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 9f85cbe50aa044a46f0a22fda323fa27b80c82da # 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=sh
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
"sparse warnings: (new ones prefixed by >>)"
>> drivers/infiniband/core/uverbs_std_types_device.c:299:29: sparse: sparse:
>> incorrect type in argument 1 (different address spaces) @@ expected void
>> *addr @@ got void [noderef] __user *__cl_addr @@
drivers/infiniband/core/uverbs_std_types_device.c:299:29: sparse:
expected void *addr
drivers/infiniband/core/uverbs_std_types_device.c:299:29: sparse: got
void [noderef] __user *__cl_addr
drivers/infiniband/core/uverbs_std_types_device.c:115:15: sparse: sparse:
cast truncates bits from constant value (ffff0001 becomes 1)
drivers/infiniband/core/uverbs_std_types_device.c:195:15: sparse: sparse:
cast truncates bits from constant value (ffffff01 becomes 1)
vim +299 drivers/infiniband/core/uverbs_std_types_device.c
270
271 static int copy_gid_entries_to_user(struct uverbs_attr_bundle *attrs,
272 struct ib_uverbs_gid_entry *entries,
273 size_t num_entries, size_t
user_entry_size)
274 {
275 const struct uverbs_attr *attr;
276 void __user *user_entries;
277 size_t copy_len;
278 int ret;
279 int i;
280
281 if (user_entry_size == sizeof(*entries)) {
282 ret = uverbs_copy_to(attrs,
283
UVERBS_ATTR_QUERY_GID_TABLE_RESP_ENTRIES,
284 entries, sizeof(*entries) *
num_entries);
285 return ret;
286 }
287
288 copy_len = min_t(size_t, user_entry_size, sizeof(*entries));
289 attr = uverbs_attr_get(attrs,
UVERBS_ATTR_QUERY_GID_TABLE_RESP_ENTRIES);
290 if (IS_ERR(attr))
291 return PTR_ERR(attr);
292
293 user_entries = u64_to_user_ptr(attr->ptr_attr.data);
294 for (i = 0; i < num_entries; i++) {
295 if (copy_to_user(user_entries, entries, copy_len))
296 return -EFAULT;
297
298 if (user_entry_size > sizeof(*entries)) {
> 299 if (clear_user(user_entries + sizeof(*entries),
300 user_entry_size -
sizeof(*entries)))
301 return -EFAULT;
302 }
303
304 entries++;
305 user_entries += user_entry_size;
306 }
307
308 return uverbs_output_written(attrs,
309
UVERBS_ATTR_QUERY_GID_TABLE_RESP_ENTRIES);
310 }
311
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
