Hello, looks like sh is missing the some __user annotations so that sparse spwes these warnings. Adding sh maintainers to Cc. regards, Marc On 10/29/20 12:01 AM, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 23859ae44402f4d935b9ee548135dd1e65e2cbf4 > commit: e057dd3fc20ffb3d7f150af46542a51b59b90127 can: add ISO 15765-2:2016 transport protocol > date: 3 weeks ago > config: sh-randconfig-s031-20201028 (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: v0.6.3-56-gc09e8239-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 <lkp@xxxxxxxxx> > > > "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-all@xxxxxxxxxxxx > -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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