Hi Luigi, kernel test robot noticed the following build warnings: [auto build test WARNING on 50b70845fc5c22cf7e7d25b57d57b3dca1725aa5] url: https://github.com/intel-lab-lkp/linux/commits/Luigi-Leonardi-via-B4-Relay/vsock-add-support-for-SIOCOUTQ-ioctl-for-all-vsock-socket-types/20240627-023902 base: 50b70845fc5c22cf7e7d25b57d57b3dca1725aa5 patch link: https://lore.kernel.org/r/20240626-ioctl_next-v3-1-63be5bf19a40%40outlook.com patch subject: [PATCH net-next v3 1/3] vsock: add support for SIOCOUTQ ioctl for all vsock socket types. config: i386-randconfig-141-20240628 (https://download.01.org/0day-ci/archive/20240628/202406281355.d1jNVGBc-lkp@xxxxxxxxx/config) compiler: gcc-8 (Ubuntu 8.4.0-3ubuntu2) 8.4.0 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202406281355.d1jNVGBc-lkp@xxxxxxxxx/ smatch warnings: net/vmw_vsock/af_vsock.c:1321 vsock_do_ioctl() warn: unsigned 'n_bytes' is never less than zero. vim +/n_bytes +1321 net/vmw_vsock/af_vsock.c 1295 1296 static int vsock_do_ioctl(struct socket *sock, unsigned int cmd, 1297 int __user *arg) 1298 { 1299 struct sock *sk = sock->sk; 1300 struct vsock_sock *vsk; 1301 int retval; 1302 1303 vsk = vsock_sk(sk); 1304 1305 switch (cmd) { 1306 case SIOCOUTQ: { 1307 size_t n_bytes; 1308 1309 if (!vsk->transport || !vsk->transport->unsent_bytes) { 1310 retval = -EOPNOTSUPP; 1311 break; 1312 } 1313 1314 if (vsk->transport->unsent_bytes) { 1315 if (sock_type_connectible(sk->sk_type) && sk->sk_state == TCP_LISTEN) { 1316 retval = -EINVAL; 1317 break; 1318 } 1319 1320 n_bytes = vsk->transport->unsent_bytes(vsk); > 1321 if (n_bytes < 0) { 1322 retval = n_bytes; 1323 break; 1324 } 1325 1326 retval = put_user(n_bytes, arg); 1327 } 1328 break; 1329 } 1330 default: 1331 retval = -ENOIOCTLCMD; 1332 } 1333 1334 return retval; 1335 } 1336 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
