tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f838f8d2b694cf9d524dc4423e9dd2db13892f3f commit: e057dd3fc20ffb3d7f150af46542a51b59b90127 can: add ISO 15765-2:2016 transport protocol date: 3 months ago config: sh-randconfig-s032-20201225 (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: v0.6.3-184-g1b896707-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e057dd3fc20ffb3d7f150af46542a51b59b90127 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e057dd3fc20ffb3d7f150af46542a51b59b90127 # 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 >>)"
>> net/can/isotp.c:1240:13: sparse: sparse: incorrect type in initializer
>> (different address spaces) @@ expected int const *__gu_addr @@ got
>> int [noderef] __user *optlen @@
net/can/isotp.c:1240:13: sparse: expected int const *__gu_addr
net/can/isotp.c:1240:13: sparse: got int [noderef] __user *optlen
>> net/can/isotp.c:1240:13: sparse: sparse: incorrect type in argument 1
>> (different address spaces) @@ expected void const volatile [noderef]
>> __user *ptr @@ got int const *__gu_addr @@
net/can/isotp.c:1240:13: sparse: expected void const volatile [noderef]
__user *ptr
net/can/isotp.c:1240:13: sparse: got int const *__gu_addr
vim +1240 net/can/isotp.c
1229
1230 static int isotp_getsockopt(struct socket *sock, int level, int optname,
1231 char __user *optval, int __user *optlen)
1232 {
1233 struct sock *sk = sock->sk;
1234 struct isotp_sock *so = isotp_sk(sk);
1235 int len;
1236 void *val;
1237
1238 if (level != SOL_CAN_ISOTP)
1239 return -EINVAL;
> 1240 if (get_user(len, optlen))
1241 return -EFAULT;
1242 if (len < 0)
1243 return -EINVAL;
1244
1245 switch (optname) {
1246 case CAN_ISOTP_OPTS:
1247 len = min_t(int, len, sizeof(struct can_isotp_options));
1248 val = &so->opt;
1249 break;
1250
1251 case CAN_ISOTP_RECV_FC:
1252 len = min_t(int, len, sizeof(struct
can_isotp_fc_options));
1253 val = &so->rxfc;
1254 break;
1255
1256 case CAN_ISOTP_TX_STMIN:
1257 len = min_t(int, len, sizeof(u32));
1258 val = &so->force_tx_stmin;
1259 break;
1260
1261 case CAN_ISOTP_RX_STMIN:
1262 len = min_t(int, len, sizeof(u32));
1263 val = &so->force_rx_stmin;
1264 break;
1265
1266 case CAN_ISOTP_LL_OPTS:
1267 len = min_t(int, len, sizeof(struct
can_isotp_ll_options));
1268 val = &so->ll;
1269 break;
1270
1271 default:
1272 return -ENOPROTOOPT;
1273 }
1274
1275 if (put_user(len, optlen))
1276 return -EFAULT;
1277 if (copy_to_user(optval, val, len))
1278 return -EFAULT;
1279 return 0;
1280 }
1281
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
