? github.com/google/syzkaller/dashboard/dashapi [no test files] ok github.com/google/syzkaller/dashboard/app (cached) ? github.com/google/syzkaller/pkg/debugtracer [no test files] ? github.com/google/syzkaller/pkg/gcs [no test files] ? github.com/google/syzkaller/pkg/hash [no test files] ? github.com/google/syzkaller/pkg/html/pages [no test files] ? github.com/google/syzkaller/pkg/ifuzz/iset [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc/generated [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86 [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/gen [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/generated [no test files] ok github.com/google/syzkaller/executor 19.190s ok github.com/google/syzkaller/pkg/asset (cached) ok github.com/google/syzkaller/pkg/ast 1.213s ok github.com/google/syzkaller/pkg/auth (cached) ? github.com/google/syzkaller/pkg/ipc/ipcconfig [no test files] ? github.com/google/syzkaller/pkg/kcidb [no test files] ? github.com/google/syzkaller/pkg/report/crash [no test files] ? github.com/google/syzkaller/pkg/rpctype [no test files] ? github.com/google/syzkaller/pkg/stats/syzbotstats [no test files] ? github.com/google/syzkaller/pkg/testutil [no test files] ? github.com/google/syzkaller/pkg/tools [no test files] ok github.com/google/syzkaller/pkg/bisect 189.939s ok github.com/google/syzkaller/pkg/bisect/minimize (cached) ok github.com/google/syzkaller/pkg/build 9.023s ok github.com/google/syzkaller/pkg/compiler 22.492s ok github.com/google/syzkaller/pkg/config (cached) ok github.com/google/syzkaller/pkg/corpus 1.269s ok github.com/google/syzkaller/pkg/cover 0.351s ok github.com/google/syzkaller/pkg/cover/backend 1.772s --- FAIL: TestGenerate (42.93s) --- FAIL: TestGenerate/test/64 (0.01s) testutil.go:33: seed=1712145063215751954 testutil.go:33: seed=1712145063220160534 --- FAIL: TestGenerate/test/64/6 (1.01s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 500); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :317:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor352594629 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/14 (1.13s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static unsigned long long procid; static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); for (procid = 0; procid < 2; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; } :321:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1111781158 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/5 (0.70s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static unsigned long long procid; static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); for (procid = 0; procid < 4; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; } :319:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2920908596 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/3 (1.51s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:10 Procs:0 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :317:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3556791295 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/0 (2.23s) csource_test.go:150: opts: {Threaded:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } static void execute_one(void); static void loop(void) { execute_one(); } void execute_one(void) { *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); syscall(SYS_mutate1); *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); syz_errno(/*v=*/2); memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); syz_exit(/*status=*/-1); syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); syz_sleep_ms(/*ms=*/0); syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :165:2: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2220404171 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/9 (2.40s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:9223372036854775807 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :317:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1712827454 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/8 (1.23s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:-9223372036854775808 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :317:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1689762177 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/12 (2.74s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :319:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1889140992 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/4 (1.90s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :317:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor60558406 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/10 (1.92s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: test$type_confusion1(&(0x7f0000000000)=@f1=0x40) (fail_nth: 1) serialize0(&(0x7f0000000040)={'HI\x00', 'bbb\x00'}) (async) breaks_returns() (rerun: 4) mutate4(&(0x7f0000000080)="925690b812adda85f92c9afe665b2382d1e3a1006f237955a63ffd22537c121f5ec47cf4ea22c1d1f29a46247af86bb159ce561dbc3c3ead37bb185f49c29e2ea0508c5704e82c51405b08056af96000806779f430d8f1ac", 0x58) mutate4(&(0x7f0000000100)="18231502f1e90486ac9f34473ade5f8772f9bfe565947750c7e405b1c5e5817b88faa5d0a92832bbc418a1caa7d468b94f311f53c4f1c5ab2f7d9e549b6db3143b478090e8a6c82e5edfd9b5df7844488e088e4d747d6e4cd7f1427271d52e76ac13c95863739e6a464fd6d34ba3801f8974fb05970394d7", 0x78) mutate_integer2(0x1, 0x2, 0x6, 0x2, 0x6) mutate_integer2(0xfffffffffffffffa, 0x2, 0xffffffff, 0x5, 0x2) test$length2(&(0x7f0000000180)={0x0, 0x8}) mutate1() test$length2(&(0x7f00000001c0)={0x0, 0x8}) syz_compare(&(0x7f0000000000)='\x00', 0x1, &(0x7f0000000040)=@bf1={{0x0, 0x1, 0x9}, 0x1}, 0x8) syz_compare_int$2(0x2, 0x8, 0x3) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="51401ea3770cbfaf5dc4b8e0ee0f9631641a54260415a8a26038efeb7af9f80daf618a097dfff4b1f487abb5331dd5e058d7") syz_exit(0xffffffff) syz_mmap(&(0x7f0000ffa000/0x4000)=nil, 0x4000) syz_sleep_ms(0x0) syz_test_fuzzer1(0xe, 0x8, 0xb) csource_test.go:151: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_breaks_returns #define SYS_breaks_returns 0 #endif #ifndef SYS_mutate1 #define SYS_mutate1 0 #endif #ifndef SYS_mutate4 #define SYS_mutate4 0 #endif #ifndef SYS_mutate_integer2 #define SYS_mutate_integer2 0 #endif #ifndef SYS_serialize0 #define SYS_serialize0 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: *(uint8_t*)0x20000000 = 0x40; inject_fault(1); syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 1: memcpy((void*)0x20000040, "HI\000\000\000\000\000\000\000\000", 10); memcpy((void*)0x2000004a, "bbb\000\000", 5); syscall(SYS_serialize0, /*a=*/0x20000040ul); break; case 2: syscall(SYS_breaks_returns); { int i; for(i = 0; i < 4; i++) { syscall(SYS_breaks_returns); } } break; case 3: memcpy((void*)0x20000080, "\x92\x56\x90\xb8\x12\xad\xda\x85\xf9\x2c\x9a\xfe\x66\x5b\x23\x82\xd1\xe3\xa1\x00\x6f\x23\x79\x55\xa6\x3f\xfd\x22\x53\x7c\x12\x1f\x5e\xc4\x7c\xf4\xea\x22\xc1\xd1\xf2\x9a\x46\x24\x7a\xf8\x6b\xb1\x59\xce\x56\x1d\xbc\x3c\x3e\xad\x37\xbb\x18\x5f\x49\xc2\x9e\x2e\xa0\x50\x8c\x57\x04\xe8\x2c\x51\x40\x5b\x08\x05\x6a\xf9\x60\x00\x80\x67\x79\xf4\x30\xd8\xf1\xac", 88); syscall(SYS_mutate4, /*data=*/0x20000080ul, /*size=*/0x58ul); break; case 4: memcpy((void*)0x20000100, "\x18\x23\x15\x02\xf1\xe9\x04\x86\xac\x9f\x34\x47\x3a\xde\x5f\x87\x72\xf9\xbf\xe5\x65\x94\x77\x50\xc7\xe4\x05\xb1\xc5\xe5\x81\x7b\x88\xfa\xa5\xd0\xa9\x28\x32\xbb\xc4\x18\xa1\xca\xa7\xd4\x68\xb9\x4f\x31\x1f\x53\xc4\xf1\xc5\xab\x2f\x7d\x9e\x54\x9b\x6d\xb3\x14\x3b\x47\x80\x90\xe8\xa6\xc8\x2e\x5e\xdf\xd9\xb5\xdf\x78\x44\x48\x8e\x08\x8e\x4d\x74\x7d\x6e\x4c\xd7\xf1\x42\x72\x71\xd5\x2e\x76\xac\x13\xc9\x58\x63\x73\x9e\x6a\x46\x4f\xd6\xd3\x4b\xa3\x80\x1f\x89\x74\xfb\x05\x97\x03\x94\xd7", 120); syscall(SYS_mutate4, /*data=*/0x20000100ul, /*size=*/0x78ul); break; case 5: syscall(SYS_mutate_integer2, /*b1=*/1ul, /*i1=*/2ul, /*i2=*/6, /*i3=*/2, /*i4=*/6); break; case 6: syscall(SYS_mutate_integer2, /*b1=*/0xfffffffffffffffaul, /*i1=*/2ul, /*i2=*/-1, /*i3=*/5, /*i4=*/2); break; case 7: *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 8; syscall(SYS_test, /*a0=*/0x20000180ul, 0, 0, 0, 0, 0); break; case 8: syscall(SYS_mutate1); break; case 9: *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 8; syscall(SYS_test, /*a0=*/0x200001c0ul, 0, 0, 0, 0, 0); break; case 10: memset((void*)0x20000000, 0, 1); STORE_BY_BITMASK(uint32_t, , 0x20000040, 0, 0, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 1, 10, 10); STORE_BY_BITMASK(uint32_t, , 0x20000040, 9, 20, 10); *(uint8_t*)0x20000044 = 1; syz_compare(/*want=*/0x20000000, /*want_len=*/1, /*got=*/0x20000040, /*got_len=*/8); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/8, /*v1=*/3, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x51\x40\x1e\xa3\x77\x0c\xbf\xaf\x5d\xc4\xb8\xe0\xee\x0f\x96\x31\x64\x1a\x54\x26\x04\x15\xa8\xa2\x60\x38\xef\xeb\x7a\xf9\xf8\x0d\xaf\x61\x8a\x09\x7d\xff\xf4\xb1\xf4\x87\xab\xb5\x33\x1d\xd5\xe0\x58\xd7", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/-1); break; case 15: syz_mmap(/*addr=*/0x20ffa000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0); break; case 17: syz_test_fuzzer1(/*a=*/0xe, /*b=*/8, /*c=*/0xb); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); do_sandbox_none(); return 0; } :304:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x20000000ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor584141671 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/13 (2.29s) csource_test.go:148: --- FAIL: TestGenerate/test/64/7 (3.13s) csource_test.go:148: --- FAIL: TestGenerate/test/64/2 (2.95s) csource_test.go:148: --- FAIL: TestGenerate/test/64/1 (3.40s) csource_test.go:148: --- FAIL: TestGenerate/openbsd/amd64 (0.24s) testutil.go:33: seed=1712145063215540943 testutil.go:33: seed=1712145063451524479 --- FAIL: TestGenerate/openbsd/amd64/0 (2.49s) csource_test.go:148: --- FAIL: TestGenerate/openbsd/amd64/10 (2.93s) csource_test.go:148: FAIL FAIL github.com/google/syzkaller/pkg/csource 60.097s ok github.com/google/syzkaller/pkg/db (cached) ok github.com/google/syzkaller/pkg/email (cached) ok github.com/google/syzkaller/pkg/email/lore (cached) ok github.com/google/syzkaller/pkg/fuzzer 77.862s ok github.com/google/syzkaller/pkg/gce (cached) ok github.com/google/syzkaller/pkg/host 13.964s ok github.com/google/syzkaller/pkg/html (cached) ok github.com/google/syzkaller/pkg/ifuzz (cached) ok github.com/google/syzkaller/pkg/image 4.428s ok github.com/google/syzkaller/pkg/instance 9.892s ok github.com/google/syzkaller/pkg/ipc 40.080s ok github.com/google/syzkaller/pkg/kconfig (cached) ok github.com/google/syzkaller/pkg/kd (cached) ok github.com/google/syzkaller/pkg/log (cached) ok github.com/google/syzkaller/pkg/mgrconfig 23.511s ok github.com/google/syzkaller/pkg/osutil (cached) ok github.com/google/syzkaller/pkg/report 28.909s ok github.com/google/syzkaller/pkg/repro 17.618s ok github.com/google/syzkaller/pkg/runtest 110.131s ok github.com/google/syzkaller/pkg/serializer (cached) ok github.com/google/syzkaller/pkg/signal (cached) ok github.com/google/syzkaller/pkg/stats (cached) ok github.com/google/syzkaller/pkg/subsystem (cached) ok github.com/google/syzkaller/pkg/subsystem/linux (cached) ok github.com/google/syzkaller/pkg/subsystem/lists (cached) ok github.com/google/syzkaller/pkg/symbolizer (cached) ok github.com/google/syzkaller/pkg/tool (cached) ok github.com/google/syzkaller/pkg/vcs (cached) ? github.com/google/syzkaller/sys [no test files] ? github.com/google/syzkaller/sys/akaros [no test files] ? github.com/google/syzkaller/sys/akaros/gen [no test files] ? github.com/google/syzkaller/sys/darwin [no test files] ? github.com/google/syzkaller/sys/darwin/gen [no test files] ? github.com/google/syzkaller/sys/freebsd [no test files] ? github.com/google/syzkaller/sys/fuchsia/fidlgen [no test files] ? github.com/google/syzkaller/sys/fuchsia [no test files] ? github.com/google/syzkaller/sys/fuchsia/layout [no test files] ? github.com/google/syzkaller/sys/freebsd/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia/gen [no test files] ? github.com/google/syzkaller/sys/linux/gen [no test files] ? github.com/google/syzkaller/sys/netbsd/gen [no test files] ? github.com/google/syzkaller/sys/openbsd/gen [no test files] ? github.com/google/syzkaller/sys/syz-extract [no test files] ? github.com/google/syzkaller/sys/syz-sysgen [no test files] ? github.com/google/syzkaller/sys/targets [no test files] ? github.com/google/syzkaller/sys/test [no test files] ? github.com/google/syzkaller/sys/test/gen [no test files] ? github.com/google/syzkaller/sys/trusty [no test files] ? github.com/google/syzkaller/sys/trusty/gen [no test files] ? github.com/google/syzkaller/sys/windows [no test files] ? github.com/google/syzkaller/sys/windows/gen [no test files] ? github.com/google/syzkaller/syz-runner [no test files] ? github.com/google/syzkaller/tools/syz-benchcmp [no test files] ? github.com/google/syzkaller/tools/syz-bisect [no test files] ? github.com/google/syzkaller/tools/syz-build [no test files] ? github.com/google/syzkaller/tools/syz-check [no test files] ? github.com/google/syzkaller/tools/syz-cover [no test files] ? github.com/google/syzkaller/tools/syz-crush [no test files] ? github.com/google/syzkaller/tools/syz-db [no test files] ? github.com/google/syzkaller/tools/syz-execprog [no test files] ? github.com/google/syzkaller/tools/syz-expand [no test files] ? github.com/google/syzkaller/tools/syz-fillreports [no test files] ? github.com/google/syzkaller/tools/syz-hubtool [no test files] ? github.com/google/syzkaller/tools/syz-fmt [no test files] ? github.com/google/syzkaller/tools/syz-kcidb [no test files] ? github.com/google/syzkaller/tools/syz-lore [no test files] ? github.com/google/syzkaller/tools/syz-make [no test files] ? github.com/google/syzkaller/tools/syz-minconfig [no test files] ? github.com/google/syzkaller/tools/syz-mutate [no test files] ? github.com/google/syzkaller/tools/syz-prog2c [no test files] ? github.com/google/syzkaller/tools/syz-query-subsystems [no test files] ? github.com/google/syzkaller/tools/syz-reporter [no test files] ? github.com/google/syzkaller/tools/syz-repro [no test files] ? github.com/google/syzkaller/tools/syz-reprolist [no test files] ? github.com/google/syzkaller/tools/syz-runtest [no test files] ? github.com/google/syzkaller/tools/syz-showprio [no test files] ? github.com/google/syzkaller/tools/syz-stress [no test files] ? github.com/google/syzkaller/tools/syz-symbolize [no test files] ok github.com/google/syzkaller/prog 28.659s ok github.com/google/syzkaller/prog/test 1.278s ok github.com/google/syzkaller/sys/linux 1.617s ok github.com/google/syzkaller/sys/netbsd 0.207s ok github.com/google/syzkaller/sys/openbsd 0.208s ? github.com/google/syzkaller/tools/syz-testbuild [no test files] ? github.com/google/syzkaller/tools/syz-trace2syz [no test files] ? github.com/google/syzkaller/tools/syz-tty [no test files] ? github.com/google/syzkaller/tools/syz-usbgen [no test files] ? github.com/google/syzkaller/tools/syz-upgrade [no test files] ? github.com/google/syzkaller/vm/adb [no test files] ? github.com/google/syzkaller/vm/bhyve [no test files] ? github.com/google/syzkaller/vm/cuttlefish [no test files] ? github.com/google/syzkaller/vm/gce [no test files] ? github.com/google/syzkaller/vm/gvisor [no test files] ? github.com/google/syzkaller/vm/kvm [no test files] ? github.com/google/syzkaller/vm/odroid [no test files] ? github.com/google/syzkaller/vm/proxyapp/mocks [no test files] ? github.com/google/syzkaller/vm/proxyapp/proxyrpc [no test files] ? github.com/google/syzkaller/vm/qemu [no test files] ? github.com/google/syzkaller/vm/starnix [no test files] ? github.com/google/syzkaller/vm/vmm [no test files] ? github.com/google/syzkaller/vm/vmware [no test files] ok github.com/google/syzkaller/syz-ci 29.849s ok github.com/google/syzkaller/syz-fuzzer 0.173s ok github.com/google/syzkaller/syz-hub 0.185s ok github.com/google/syzkaller/syz-hub/state 0.616s ok github.com/google/syzkaller/syz-manager 16.061s ok github.com/google/syzkaller/syz-verifier 7.617s ok github.com/google/syzkaller/tools/syz-kconf (cached) ok github.com/google/syzkaller/tools/syz-linter (cached) ok github.com/google/syzkaller/tools/syz-testbed 6.985s ok github.com/google/syzkaller/tools/syz-trace2syz/parser 0.194s ok github.com/google/syzkaller/tools/syz-trace2syz/proggen 2.534s ok github.com/google/syzkaller/vm 15.230s ok github.com/google/syzkaller/vm/isolated 6.020s ok github.com/google/syzkaller/vm/proxyapp 7.379s ok github.com/google/syzkaller/vm/vmimpl 3.919s FAIL