tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-linux-5.4.y head: 41c32273d7f5666a5637a109ec004fd746d5efac commit: a4aead6fc0566e064448dc8363333b78f7bb1545 [8324/8346] net: socket: accept redundant network info in control message config: parisc-randconfig-s032-20200731 (attached as .config) compiler: hppa-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: v0.6.2-115-g5fc204f2-dirty git checkout a4aead6fc0566e064448dc8363333b78f7bb1545 # 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=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) net/core/sock.c: note: in included file (through arch/parisc/include/uapi/asm/unistd.h, arch/parisc/include/asm/unistd.h, include/uapi/linux/unistd.h, ...): ./arch/parisc/include/generated/uapi/asm/unistd_32.h:380:41: sparse: sparse: no newline at end of file net/core/sock.c:2306:14: sparse: sparse: undefined identifier 'SCM_REDUNDANT' net/core/sock.c:3102:35: sparse: sparse: undefined identifier 'SCM_REDUNDANT' net/core/sock.c:1910:9: sparse: sparse: context imbalance in 'sk_clone_lock' - wrong count at exit net/core/sock.c:1914:6: sparse: sparse: context imbalance in 'sk_free_unlock_clone' - unexpected unlock net/core/sock.c:2306:14: sparse: sparse: Expected constant expression in case statement vim +/case +2306 net/core/sock.c 2269 2270 int __sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct cmsghdr *cmsg, 2271 struct sockcm_cookie *sockc) 2272 { 2273 struct skb_redundant_info *cred; 2274 u32 tsflags; 2275 2276 switch (cmsg->cmsg_type) { 2277 case SO_MARK: 2278 if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) 2279 return -EPERM; 2280 if (cmsg->cmsg_len != CMSG_LEN(sizeof(u32))) 2281 return -EINVAL; 2282 sockc->mark = *(u32 *)CMSG_DATA(cmsg); 2283 break; 2284 case SO_TIMESTAMPING_OLD: 2285 if (cmsg->cmsg_len != CMSG_LEN(sizeof(u32))) 2286 return -EINVAL; 2287 2288 tsflags = *(u32 *)CMSG_DATA(cmsg); 2289 if (tsflags & ~SOF_TIMESTAMPING_TX_RECORD_MASK) 2290 return -EINVAL; 2291 2292 sockc->tsflags &= ~SOF_TIMESTAMPING_TX_RECORD_MASK; 2293 sockc->tsflags |= tsflags; 2294 break; 2295 case SCM_TXTIME: 2296 if (!sock_flag(sk, SOCK_TXTIME)) 2297 return -EINVAL; 2298 if (cmsg->cmsg_len != CMSG_LEN(sizeof(u64))) 2299 return -EINVAL; 2300 sockc->transmit_time = get_unaligned((u64 *)CMSG_DATA(cmsg)); 2301 break; 2302 /* SCM_RIGHTS and SCM_CREDENTIALS are semantically in SOL_UNIX. */ 2303 case SCM_RIGHTS: 2304 case SCM_CREDENTIALS: 2305 break; 2307 if (cmsg->cmsg_len != 2308 CMSG_LEN(sizeof(struct skb_redundant_info))) 2309 return -EINVAL; 2310 2311 cred = (struct skb_redundant_info *)CMSG_DATA(cmsg); 2312 memcpy(&sockc->redinfo, cred, 2313 sizeof(struct skb_redundant_info)); 2314 break; 2315 default: 2316 return -EINVAL; 2317 } 2318 return 0; 2319 } 2320 EXPORT_SYMBOL(__sock_cmsg_send); 2321 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org