tree: https://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git topic-zol-remove head: 706f0ffb515d976d57112a19f9b11049d473848c commit: 0f81f9cfa6066b6ada647ea1621509f05106f37a [31/50] ARC: cmpxchg/xchg: rewrite as macros to make type safe config: arc-randconfig-s001-20200520 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty git checkout 0f81f9cfa6066b6ada647ea1621509f05106f37a # save the attached .config to linux build tree make W=1 C=1 ARCH=arc CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) net/core/sock.c:1120:25: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/asm-generic/atomic-long.h:906:16: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> -- net/core/dev.c:3185:23: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __wsum [usertype] csum @@ got [usertype] csum @@ net/core/dev.c:3185:23: sparse: expected restricted __wsum [usertype] csum net/core/dev.c:3185:23: sparse: got unsigned int net/core/dev.c:3185:23: sparse: sparse: cast from restricted __wsum net/core/dev.c:3185:23: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __wsum [usertype] csum @@ got [usertype] csum @@ net/core/dev.c:3185:23: sparse: expected restricted __wsum [usertype] csum net/core/dev.c:3185:23: sparse: got unsigned int net/core/dev.c:3185:23: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] val @@ got d int [usertype] val @@ net/core/dev.c:3185:23: sparse: expected unsigned int [usertype] val net/core/dev.c:3185:23: sparse: got restricted __wsum net/core/dev.c:3185:23: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __wsum [usertype] csum @@ got [usertype] csum @@ net/core/dev.c:3185:23: sparse: expected restricted __wsum [usertype] csum net/core/dev.c:3185:23: sparse: got unsigned int net/core/dev.c:3185:23: sparse: sparse: cast from restricted __wsum net/core/dev.c:3185:23: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __wsum [usertype] csum @@ got [usertype] csum @@ net/core/dev.c:3185:23: sparse: expected restricted __wsum [usertype] csum net/core/dev.c:3185:23: sparse: got unsigned int net/core/dev.c:3185:23: sparse: sparse: cast from restricted __wsum net/core/dev.c:3185:23: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __wsum [usertype] csum @@ got [usertype] csum @@ net/core/dev.c:3185:23: sparse: expected restricted __wsum [usertype] csum net/core/dev.c:3185:23: sparse: got unsigned int net/core/dev.c:3185:23: sparse: sparse: cast from restricted __wsum net/core/dev.c:3185:23: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __wsum [usertype] csum @@ got [usertype] csum @@ net/core/dev.c:3185:23: sparse: expected restricted __wsum [usertype] csum net/core/dev.c:3185:23: sparse: got unsigned int net/core/dev.c:3185:23: sparse: sparse: cast from restricted __wsum net/core/dev.c:6209:18: sparse: sparse: undefined identifier '__builtin_arc_sr' net/core/dev.c:6279:18: sparse: sparse: undefined identifier '__builtin_arc_sr' net/core/dev.c:6377:29: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- net/netfilter/nf_conntrack_core.c:2310:9: sparse: sparse: incompatible types in comparison expression (different address spaces): net/netfilter/nf_conntrack_core.c:2310:9: sparse: void ( [noderef] <asn:4> * )( ... ) net/netfilter/nf_conntrack_core.c:2310:9: sparse: void ( * )( ... ) net/netfilter/nf_conntrack_core.c:2627:9: sparse: sparse: incompatible types in comparison expression (different address spaces): net/netfilter/nf_conntrack_core.c:2627:9: sparse: void ( [noderef] <asn:4> * )( ... ) net/netfilter/nf_conntrack_core.c:2627:9: sparse: void ( * )( ... ) net/netfilter/nf_conntrack_core.c:113:13: sparse: sparse: context imbalance in 'nf_conntrack_double_unlock' - unexpected unlock net/netfilter/nf_conntrack_core.c:123:13: sparse: sparse: context imbalance in 'nf_conntrack_double_lock' - wrong count at exit net/netfilter/nf_conntrack_core.c:153:9: sparse: sparse: context imbalance in 'nf_conntrack_all_lock' - wrong count at exit net/netfilter/nf_conntrack_core.c:164:13: sparse: sparse: context imbalance in 'nf_conntrack_all_unlock' - unexpected unlock include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- net/netfilter/nf_conntrack_netlink.c:1693:34: sparse: sparse: incompatible types in comparison expression (different address spaces): net/netfilter/nf_conntrack_netlink.c:1693:34: sparse: struct nf_conntrack_helper [noderef] <asn:4> * net/netfilter/nf_conntrack_netlink.c:1693:34: sparse: struct nf_conntrack_helper * net/netfilter/nf_conntrack_netlink.c:3145:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected char const *cs @@ got char [noderechar const *cs @@ net/netfilter/nf_conntrack_netlink.c:3145:29: sparse: expected char const *cs net/netfilter/nf_conntrack_netlink.c:3145:29: sparse: got char [noderef] <asn:4> * include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> -- net/ipv4/route.c:496:27: sparse: sparse: undefined identifier '__builtin_arc_sr' net/ipv4/route.c:503:18: sparse: sparse: undefined identifier '__builtin_arc_sr' net/ipv4/route.c:783:46: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned int [usertype] key @@ got restrunsigned int [usertype] key @@ net/ipv4/route.c:783:46: sparse: expected unsigned int [usertype] key net/ipv4/route.c:783:46: sparse: got restricted __be32 [usertype] new_gw net/ipv4/route.c:1485:16: sparse: sparse: undefined identifier '__builtin_arc_sr' net/ipv4/route.c:3020:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be16 [usertype] len @@ got [usertype] len @@ net/ipv4/route.c:3020:27: sparse: expected restricted __be16 [usertype] len net/ipv4/route.c:3020:27: sparse: got unsigned int include/net/route.h:366:48: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned int [usertype] key @@ got restrunsigned int [usertype] key @@ include/net/route.h:366:48: sparse: expected unsigned int [usertype] key include/net/route.h:366:48: sparse: got restricted __be32 [usertype] daddr include/net/route.h:366:48: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned int [usertype] key @@ got restrunsigned int [usertype] key @@ include/net/route.h:366:48: sparse: expected unsigned int [usertype] key include/net/route.h:366:48: sparse: got restricted __be32 [usertype] daddr include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- net/ipv4/tcp_ipv4.c:2681:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *data @@ got struct tcp_congestion_ops const [noderevoid const *data @@ net/ipv4/tcp_ipv4.c:2681:41: sparse: expected void const *data net/ipv4/tcp_ipv4.c:2681:41: sparse: got struct tcp_congestion_ops const [noderef] <asn:4> *tcp_congestion_control net/ipv4/tcp_ipv4.c:2789:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *data @@ got struct tcp_congestion_ops const [noderef] <asn:4> *extern [addressable]void const *data @@ net/ipv4/tcp_ipv4.c:2789:45: sparse: expected void const *data net/ipv4/tcp_ipv4.c:2789:45: sparse: got struct tcp_congestion_ops const [noderef] <asn:4> *extern [addressable] [toplevel] tcp_congestion_control net/ipv4/tcp_ipv4.c:2793:50: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct tcp_congestion_ops const [noderef] <asn:4> *tcp_congestion_control @@ got s const [noderef] <asn:4> *tcp_congestion_control @@ net/ipv4/tcp_ipv4.c:2793:50: sparse: expected struct tcp_congestion_ops const [noderef] <asn:4> *tcp_congestion_control net/ipv4/tcp_ipv4.c:2793:50: sparse: got struct tcp_congestion_ops * arch/arc/include/asm/checksum.h:27:22: sparse: sparse: restricted __wsum degrades to integer arch/arc/include/asm/checksum.h:27:32: sparse: sparse: restricted __wsum degrades to integer arch/arc/include/asm/checksum.h:29:11: sparse: sparse: bad assignment (-=) to restricted __wsum arch/arc/include/asm/checksum.h:30:16: sparse: sparse: restricted __wsum degrades to integer arch/arc/include/asm/checksum.h:30:18: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __sum16 @@ got cted __sum16 @@ arch/arc/include/asm/checksum.h:30:18: sparse: expected restricted __sum16 arch/arc/include/asm/checksum.h:30:18: sparse: got unsigned int include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- net/ipv4/tcp_cong.c:228:24: sparse: got struct tcp_congestion_ops *[assigned] ca net/ipv4/tcp_cong.c:228:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct tcp_congestion_ops const *prev @@ got struct tcp_congestion_ops construct tcp_congestion_ops const *prev @@ net/ipv4/tcp_cong.c:228:22: sparse: expected struct tcp_congestion_ops const *prev -- include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> -- net/xfrm/xfrm_policy.c:1293:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct hlist_head *odst @@ got struct hlist_head struct hlist_head *odst @@ net/xfrm/xfrm_policy.c:1293:22: sparse: expected struct hlist_head *odst net/xfrm/xfrm_policy.c:1293:22: sparse: got struct hlist_head [noderef] <asn:4> *table net/xfrm/xfrm_policy.c:3952:43: sparse: sparse: incompatible types in comparison expression (different address spaces): net/xfrm/xfrm_policy.c:3952:43: sparse: struct xfrm_policy_afinfo const [noderef] <asn:4> * net/xfrm/xfrm_policy.c:3952:43: sparse: struct xfrm_policy_afinfo const * net/xfrm/xfrm_policy.c:4042:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct hlist_head [noderef] <asn:4> *table @@ got [noderef] <asn:4> *table @@ net/xfrm/xfrm_policy.c:4042:29: sparse: expected struct hlist_head [noderef] <asn:4> *table net/xfrm/xfrm_policy.c:4042:29: sparse: got struct hlist_head * net/xfrm/xfrm_policy.c:4069:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct hlist_head *n @@ got struct hlist_head struct hlist_head *n @@ net/xfrm/xfrm_policy.c:4069:36: sparse: expected struct hlist_head *n net/xfrm/xfrm_policy.c:4069:36: sparse: got struct hlist_head [noderef] <asn:4> *table net/xfrm/xfrm_policy.c:4097:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct hlist_head const *h @@ got struct hliststruct hlist_head const *h @@ net/xfrm/xfrm_policy.c:4097:17: sparse: expected struct hlist_head const *h net/xfrm/xfrm_policy.c:4097:17: sparse: got struct hlist_head [noderef] <asn:4> *table net/xfrm/xfrm_policy.c:4098:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct hlist_head *n @@ got struct hlist_head struct hlist_head *n @@ net/xfrm/xfrm_policy.c:4098:36: sparse: expected struct hlist_head *n net/xfrm/xfrm_policy.c:4098:36: sparse: got struct hlist_head [noderef] <asn:4> *table net/xfrm/xfrm_policy.c:244:9: sparse: sparse: context imbalance in 'xfrm_policy_get_afinfo' - different lock contexts for basic block include/linux/rcupdate.h:653:9: sparse: sparse: context imbalance in '__xfrm_dst_lookup' - unexpected unlock include/linux/rbtree.h:84:9: sparse: sparse: incompatible types in comparison expression (different address spaces): include/linux/rbtree.h:84:9: sparse: struct rb_node [noderef] <asn:4> * include/linux/rbtree.h:84:9: sparse: struct rb_node * include/linux/rbtree.h:84:9: sparse: sparse: incompatible types in comparison expression (different address spaces): include/linux/rbtree.h:84:9: sparse: struct rb_node [noderef] <asn:4> * include/linux/rbtree.h:84:9: sparse: struct rb_node * include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- net/ipv6/route.c:666:22: sparse: sparse: undefined identifier '__builtin_arc_sr' net/ipv6/route.c:1414:16: sparse: sparse: undefined identifier '__builtin_arc_sr' net/ipv6/route.c:2320:39: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] flow_label @@ got d int [usertype] flow_label @@ net/ipv6/route.c:2320:39: sparse: expected unsigned int [usertype] flow_label net/ipv6/route.c:2320:39: sparse: got restricted __be32 include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> include/linux/atomic-fallback.h:957:13: sparse: sparse: not a function <noident> -- include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- net/rxrpc/conn_object.c:421:21: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- include/linux/atomic-fallback.h:957:13: sparse: sparse: undefined identifier '__builtin_arc_sr' include/linux/atomic-fallback.h:918:13: sparse: sparse: undefined identifier '__builtin_arc_sr' -- drivers/usb/gadget/function/f_fs.c:899:13: sparse: sparse: undefined identifier '__builtin_arc_sr' drivers/usb/gadget/function/f_fs.c:937:13: sparse: sparse: undefined identifier '__builtin_arc_sr' drivers/usb/gadget/function/f_fs.c:2857:32: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] wMaxPacketSize @@ got resunsigned short [usertype] wMaxPacketSize @@ drivers/usb/gadget/function/f_fs.c:2857:32: sparse: expected unsigned short [usertype] wMaxPacketSize drivers/usb/gadget/function/f_fs.c:2857:32: sparse: got restricted __le16 [usertype] wMaxPacketSize drivers/usb/gadget/function/f_fs.c:2882:36: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] wMaxPacketSize @@ got tricted __le16 [usertype] wMaxPacketSize @@ drivers/usb/gadget/function/f_fs.c:2882:36: sparse: expected restricted __le16 [usertype] wMaxPacketSize drivers/usb/gadget/function/f_fs.c:2882:36: sparse: got unsigned short [usertype] wMaxPacketSize drivers/usb/gadget/function/f_fs.c:91:17: sparse: sparse: undefined identifier '__builtin_arc_sr' -- drivers/gpu/drm/scheduler/sched_entity.c:192:21: sparse: sparse: undefined identifier '__builtin_arc_sr' include/asm-generic/atomic-long.h:906:16: sparse: sparse: undefined identifier '__builtin_arc_sr' vim +918 include/linux/atomic-fallback.h 9fa45070a2e59a Mark Rutland 2018-09-04 912 9fa45070a2e59a Mark Rutland 2018-09-04 913 #ifndef atomic_try_cmpxchg 9fa45070a2e59a Mark Rutland 2018-09-04 914 static inline bool 9fa45070a2e59a Mark Rutland 2018-09-04 915 atomic_try_cmpxchg(atomic_t *v, int *old, int new) 9fa45070a2e59a Mark Rutland 2018-09-04 916 { 9fa45070a2e59a Mark Rutland 2018-09-04 917 int r, o = *old; 9fa45070a2e59a Mark Rutland 2018-09-04 @918 r = atomic_cmpxchg(v, o, new); 9fa45070a2e59a Mark Rutland 2018-09-04 919 if (unlikely(r != o)) 9fa45070a2e59a Mark Rutland 2018-09-04 920 *old = r; 9fa45070a2e59a Mark Rutland 2018-09-04 921 return likely(r == o); 9fa45070a2e59a Mark Rutland 2018-09-04 922 } 9fa45070a2e59a Mark Rutland 2018-09-04 923 #define atomic_try_cmpxchg atomic_try_cmpxchg 9fa45070a2e59a Mark Rutland 2018-09-04 924 #endif 9fa45070a2e59a Mark Rutland 2018-09-04 925 :::::: The code at line 918 was first introduced by commit :::::: 9fa45070a2e59a871e1cd3370173369f3a4f61e2 locking/atomics: Switch to generated fallbacks :::::: TO: Mark Rutland <mark.rutland(a)arm.com&gt; :::::: CC: Ingo Molnar <mingo(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org