Hi Eric, [auto build test WARNING on net/master]
url: https://github.com/0day-ci/linux/commits/Eric-Dumazet/dccp-tcp-fix-ireq-opt-races/20171021-034024 config: powerpc-ppc6xx_defconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc All warnings (new ones prefixed by >>): In file included from arch/powerpc/include/asm/atomic.h:10:0, from include/linux/atomic.h:4, from include/linux/rcupdate.h:38, from net/ipv4/cipso_ipv4.c:40: net/ipv4/cipso_ipv4.c: In function 'cipso_v4_req_setattr': net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed' __typeof__(*(ptr)) _x_ = (x); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ >> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes >> integer from pointer without a cast [-Wint-conversion] __typeof__(*(ptr)) _x_ = (x); \ ^ >> include/linux/atomic.h:65:9: note: in expansion of macro 'xchg_relaxed' typeof(op##_relaxed(args)) __ret; \ ^~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed' (unsigned long)_x_, sizeof(*(ptr))); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed' __typeof__(*(ptr)) _x_ = (x); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ >> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes >> integer from pointer without a cast [-Wint-conversion] __typeof__(*(ptr)) _x_ = (x); \ ^ include/linux/atomic.h:67:10: note: in expansion of macro 'xchg_relaxed' __ret = op##_relaxed(args); \ ^~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed' (unsigned long)_x_, sizeof(*(ptr))); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net/ipv4/cipso_ipv4.c:1954:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion] opt = xchg(&req_inet->opt, opt); ^ net/ipv4/cipso_ipv4.c: In function 'cipso_v4_req_delattr': net/ipv4/cipso_ipv4.c:2073:16: error: 'struct inet_request_sock' has no member named 'opt' opt = req_inet->opt; ^~ net/ipv4/cipso_ipv4.c:2077:27: error: 'struct inet_request_sock' has no member named 'opt' cipso_v4_delopt(&req_inet->opt); ^~ -- In file included from arch/powerpc/include/asm/atomic.h:10:0, from include/linux/atomic.h:4, from include/linux/rcupdate.h:38, from net//ipv4/cipso_ipv4.c:40: net//ipv4/cipso_ipv4.c: In function 'cipso_v4_req_setattr': net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed' __typeof__(*(ptr)) _x_ = (x); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ >> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes >> integer from pointer without a cast [-Wint-conversion] __typeof__(*(ptr)) _x_ = (x); \ ^ >> include/linux/atomic.h:65:9: note: in expansion of macro 'xchg_relaxed' typeof(op##_relaxed(args)) __ret; \ ^~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed' (unsigned long)_x_, sizeof(*(ptr))); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed' __typeof__(*(ptr)) _x_ = (x); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ >> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes >> integer from pointer without a cast [-Wint-conversion] __typeof__(*(ptr)) _x_ = (x); \ ^ include/linux/atomic.h:67:10: note: in expansion of macro 'xchg_relaxed' __ret = op##_relaxed(args); \ ^~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed' (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt' opt = xchg(&req_inet->opt, opt); ^ arch/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed' (unsigned long)_x_, sizeof(*(ptr))); \ ^~~ include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence' #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) ^~~~~~~~~~~~~~~~~ net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg' opt = xchg(&req_inet->opt, opt); ^~~~ net//ipv4/cipso_ipv4.c:1954:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion] opt = xchg(&req_inet->opt, opt); ^ net//ipv4/cipso_ipv4.c: In function 'cipso_v4_req_delattr': net//ipv4/cipso_ipv4.c:2073:16: error: 'struct inet_request_sock' has no member named 'opt' opt = req_inet->opt; ^~ net//ipv4/cipso_ipv4.c:2077:27: error: 'struct inet_request_sock' has no member named 'opt' cipso_v4_delopt(&req_inet->opt); ^~ vim +203 arch/powerpc/include/asm/cmpxchg.h ae3a197e David Howells 2012-03-28 175 ae3a197e David Howells 2012-03-28 176 static __always_inline unsigned long 26760fc1 Boqun Feng 2015-12-15 177 __xchg_relaxed(void *ptr, unsigned long x, unsigned int size) ae3a197e David Howells 2012-03-28 178 { ae3a197e David Howells 2012-03-28 179 switch (size) { d0563a12 Pan Xinhui 2016-04-27 180 case 1: d0563a12 Pan Xinhui 2016-04-27 181 return __xchg_u8_relaxed(ptr, x); d0563a12 Pan Xinhui 2016-04-27 182 case 2: d0563a12 Pan Xinhui 2016-04-27 183 return __xchg_u16_relaxed(ptr, x); ae3a197e David Howells 2012-03-28 184 case 4: 26760fc1 Boqun Feng 2015-12-15 185 return __xchg_u32_relaxed(ptr, x); ae3a197e David Howells 2012-03-28 186 #ifdef CONFIG_PPC64 ae3a197e David Howells 2012-03-28 187 case 8: 26760fc1 Boqun Feng 2015-12-15 188 return __xchg_u64_relaxed(ptr, x); ae3a197e David Howells 2012-03-28 189 #endif ae3a197e David Howells 2012-03-28 190 } 10d8b148 pan xinhui 2016-02-23 191 BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_local"); ae3a197e David Howells 2012-03-28 192 return x; ae3a197e David Howells 2012-03-28 193 } 26760fc1 Boqun Feng 2015-12-15 194 #define xchg_local(ptr,x) \ ae3a197e David Howells 2012-03-28 195 ({ \ ae3a197e David Howells 2012-03-28 196 __typeof__(*(ptr)) _x_ = (x); \ 26760fc1 Boqun Feng 2015-12-15 197 (__typeof__(*(ptr))) __xchg_local((ptr), \ 26760fc1 Boqun Feng 2015-12-15 198 (unsigned long)_x_, sizeof(*(ptr))); \ ae3a197e David Howells 2012-03-28 199 }) ae3a197e David Howells 2012-03-28 200 26760fc1 Boqun Feng 2015-12-15 201 #define xchg_relaxed(ptr, x) \ ae3a197e David Howells 2012-03-28 202 ({ \ ae3a197e David Howells 2012-03-28 @203 __typeof__(*(ptr)) _x_ = (x); \ 26760fc1 Boqun Feng 2015-12-15 204 (__typeof__(*(ptr))) __xchg_relaxed((ptr), \ ae3a197e David Howells 2012-03-28 205 (unsigned long)_x_, sizeof(*(ptr))); \ ae3a197e David Howells 2012-03-28 206 }) ae3a197e David Howells 2012-03-28 207 /* ae3a197e David Howells 2012-03-28 208 * Compare and exchange - if *p == old, set it to new, ae3a197e David Howells 2012-03-28 209 * and return the old value of *p. ae3a197e David Howells 2012-03-28 210 */ ae3a197e David Howells 2012-03-28 211 :::::: The code at line 203 was first introduced by commit :::::: ae3a197e3d0bfe3f4bf1693723e82dc018c096f3 Disintegrate asm/system.h for PowerPC :::::: TO: David Howells <dhowe...@redhat.com> :::::: CC: David Howells <dhowe...@redhat.com> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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