tree: https://android.googlesource.com/kernel/common android12-5.10 head: 2d6a43c0364d3bb0c5c00b0a32b27f4c7740e004 commit: 81c8161bed77ae0da88c78ff822220ba1a2a7a8a [12341/13830] ANDROID: vendor_hooks: Add hooks to tcp/udp send/recv msg functions. config: x86_64-randconfig-s021-20211207 (https://download.01.org/0day-ci/archive/20211212/202112121759.PWDl29OW-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android12-5.10 git checkout 81c8161bed77ae0da88c78ff822220ba1a2a7a8a # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/android/ drivers/pci/ net/ipv4/ 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/ipv4/udp.c: note: in included file: include/trace/hooks/ipv4.h:20:1: sparse: expected struct tracepoint_func *it_func_ptr include/trace/hooks/ipv4.h:20:1: sparse: got struct tracepoint_func [noderef] __rcu *funcs net/ipv4/udp.c:1459:28: sparse: sparse: context imbalance in 'udp_rmem_release' - unexpected unlock net/ipv4/udp.c:1491:19: sparse: sparse: context imbalance in 'busylock_acquire' - wrong count at exit net/ipv4/udp.c:1503:28: sparse: sparse: context imbalance in 'busylock_release' - unexpected unlock net/ipv4/udp.c: note: in included file (through include/net/inet_sock.h, include/net/icmp.h): include/net/sock.h:1621:31: sparse: sparse: context imbalance in 'skb_consume_udp' - unexpected unlock net/ipv4/udp.c: note: in included file: include/trace/hooks/ipv4.h:24:1: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct tracepoint_func *it_func_ptr @@ got struct tracepoint_func [noderef] __rcu *funcs @@ include/trace/hooks/ipv4.h:24:1: sparse: expected struct tracepoint_func *it_func_ptr include/trace/hooks/ipv4.h:24:1: sparse: got struct tracepoint_func [noderef] __rcu *funcs net/ipv4/udp.c: note: in included file (through include/net/inet_sock.h, include/net/icmp.h): include/net/sock.h:1621:31: sparse: sparse: context imbalance in 'udp_destroy_sock' - unexpected unlock net/ipv4/udp.c:2899:9: sparse: sparse: context imbalance in 'udp_get_first' - wrong count at exit net/ipv4/udp.c:2921:39: sparse: sparse: context imbalance in 'udp_get_next' - unexpected unlock net/ipv4/udp.c:2971:31: sparse: sparse: context imbalance in 'udp_seq_stop' - unexpected unlock vim +20 include/trace/hooks/ipv4.h 11 12 DECLARE_RESTRICTED_HOOK(android_rvh_tcp_sendmsg_locked, 13 TP_PROTO(struct sock *sk, int size), 14 TP_ARGS(sk, size), 1); 15 16 DECLARE_RESTRICTED_HOOK(android_rvh_tcp_recvmsg, 17 TP_PROTO(struct sock *sk), 18 TP_ARGS(sk), 1); 19 21 TP_PROTO(struct sock *sk), 22 TP_ARGS(sk), 1); 23 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org