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Date: Wed, 7 Sep 2022 21:47:41 +0800 From: kernel test robot <lkp@...el.com> To: Kumar Kartikeya Dwivedi <memxor@...il.com> Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org, Alexei Starovoitov <ast@...nel.org> Subject: net/bpf/test_run.c:249:1: warning: no previous declaration for 'bpf_kfunc_call_test_acquire' tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 0066f1b0e27556381402db3ff31f85d2a2265858 commit: c1ff181ffabc292abcd1832a1c83aac2bc499e71 selftests/bpf: Extend kfunc selftests date: 8 months ago config: x86_64-randconfig-a003-20220829 (https://download.01.org/0day-ci/archive/20220907/202209072132.nwoItdQm-lkp@intel.com/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1ff181ffabc292abcd1832a1c83aac2bc499e71 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c1ff181ffabc292abcd1832a1c83aac2bc499e71 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash net/bpf/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@...el.com> All warnings (new ones prefixed by >>): net/bpf/test_run.c:171:14: warning: no previous declaration for 'bpf_fentry_test1' [-Wmissing-declarations] int noinline bpf_fentry_test1(int a) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:176:14: warning: no previous declaration for 'bpf_fentry_test2' [-Wmissing-declarations] int noinline bpf_fentry_test2(int a, u64 b) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:181:14: warning: no previous declaration for 'bpf_fentry_test3' [-Wmissing-declarations] int noinline bpf_fentry_test3(char a, int b, u64 c) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:186:14: warning: no previous declaration for 'bpf_fentry_test4' [-Wmissing-declarations] int noinline bpf_fentry_test4(void *a, char b, int c, u64 d) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:191:14: warning: no previous declaration for 'bpf_fentry_test5' [-Wmissing-declarations] int noinline bpf_fentry_test5(u64 a, void *b, short c, int d, u64 e) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:196:14: warning: no previous declaration for 'bpf_fentry_test6' [-Wmissing-declarations] int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:205:14: warning: no previous declaration for 'bpf_fentry_test7' [-Wmissing-declarations] int noinline bpf_fentry_test7(struct bpf_fentry_test_t *arg) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:210:14: warning: no previous declaration for 'bpf_fentry_test8' [-Wmissing-declarations] int noinline bpf_fentry_test8(struct bpf_fentry_test_t *arg) ^~~~~~~~~~~~~~~~ net/bpf/test_run.c:215:14: warning: no previous declaration for 'bpf_modify_return_test' [-Wmissing-declarations] int noinline bpf_modify_return_test(int a, int *b) ^~~~~~~~~~~~~~~~~~~~~~ net/bpf/test_run.c:221:14: warning: no previous declaration for 'bpf_kfunc_call_test1' [-Wmissing-declarations] u64 noinline bpf_kfunc_call_test1(struct sock *sk, u32 a, u64 b, u32 c, u64 d) ^~~~~~~~~~~~~~~~~~~~ net/bpf/test_run.c:226:14: warning: no previous declaration for 'bpf_kfunc_call_test2' [-Wmissing-declarations] int noinline bpf_kfunc_call_test2(struct sock *sk, u32 a, u32 b) ^~~~~~~~~~~~~~~~~~~~ net/bpf/test_run.c:231:24: warning: no previous declaration for 'bpf_kfunc_call_test3' [-Wmissing-declarations] struct sock * noinline bpf_kfunc_call_test3(struct sock *sk) ^~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:249:1: warning: no previous declaration for 'bpf_kfunc_call_test_acquire' [-Wmissing-declarations] bpf_kfunc_call_test_acquire(unsigned long *scalar_ptr) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:257:15: warning: no previous declaration for 'bpf_kfunc_call_test_release' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:299:15: warning: no previous declaration for 'bpf_kfunc_call_test_pass_ctx' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_pass_ctx(struct __sk_buff *skb) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:303:15: warning: no previous declaration for 'bpf_kfunc_call_test_pass1' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_pass1(struct prog_test_pass1 *p) ^~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:307:15: warning: no previous declaration for 'bpf_kfunc_call_test_pass2' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_pass2(struct prog_test_pass2 *p) ^~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:311:15: warning: no previous declaration for 'bpf_kfunc_call_test_fail1' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_fail1(struct prog_test_fail1 *p) ^~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:315:15: warning: no previous declaration for 'bpf_kfunc_call_test_fail2' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_fail2(struct prog_test_fail2 *p) ^~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:319:15: warning: no previous declaration for 'bpf_kfunc_call_test_fail3' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_fail3(struct prog_test_fail3 *p) ^~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:323:15: warning: no previous declaration for 'bpf_kfunc_call_test_mem_len_pass1' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_mem_len_pass1(void *mem, int mem__sz) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:327:15: warning: no previous declaration for 'bpf_kfunc_call_test_mem_len_fail1' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_mem_len_fail1(void *mem, int len) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> net/bpf/test_run.c:331:15: warning: no previous declaration for 'bpf_kfunc_call_test_mem_len_fail2' [-Wmissing-declarations] noinline void bpf_kfunc_call_test_mem_len_fail2(u64 *mem, int len) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/bpf_kfunc_call_test_acquire +249 net/bpf/test_run.c 247 248 noinline struct prog_test_ref_kfunc * > 249 bpf_kfunc_call_test_acquire(unsigned long *scalar_ptr) 250 { 251 /* randomly return NULL */ 252 if (get_jiffies_64() % 2) 253 return NULL; 254 return &prog_test_struct; 255 } 256 > 257 noinline void bpf_kfunc_call_test_release(struct prog_test_ref_kfunc *p) 258 { 259 } 260 261 struct prog_test_pass1 { 262 int x0; 263 struct { 264 int x1; 265 struct { 266 int x2; 267 struct { 268 int x3; 269 }; 270 }; 271 }; 272 }; 273 274 struct prog_test_pass2 { 275 int len; 276 short arr1[4]; 277 struct { 278 char arr2[4]; 279 unsigned long arr3[8]; 280 } x; 281 }; 282 283 struct prog_test_fail1 { 284 void *p; 285 int x; 286 }; 287 288 struct prog_test_fail2 { 289 int x8; 290 struct prog_test_pass1 x; 291 }; 292 293 struct prog_test_fail3 { 294 int len; 295 char arr1[2]; 296 char arr2[0]; 297 }; 298 > 299 noinline void bpf_kfunc_call_test_pass_ctx(struct __sk_buff *skb) 300 { 301 } 302 > 303 noinline void bpf_kfunc_call_test_pass1(struct prog_test_pass1 *p) 304 { 305 } 306 > 307 noinline void bpf_kfunc_call_test_pass2(struct prog_test_pass2 *p) 308 { 309 } 310 > 311 noinline void bpf_kfunc_call_test_fail1(struct prog_test_fail1 *p) 312 { 313 } 314 > 315 noinline void bpf_kfunc_call_test_fail2(struct prog_test_fail2 *p) 316 { 317 } 318 > 319 noinline void bpf_kfunc_call_test_fail3(struct prog_test_fail3 *p) 320 { 321 } 322 > 323 noinline void bpf_kfunc_call_test_mem_len_pass1(void *mem, int mem__sz) 324 { 325 } 326 > 327 noinline void bpf_kfunc_call_test_mem_len_fail1(void *mem, int len) 328 { 329 } 330 > 331 noinline void bpf_kfunc_call_test_mem_len_fail2(u64 *mem, int len) 332 { 333 } 334 -- 0-DAY CI Kernel Test Service https://01.org/lkp
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