? 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 [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/x86/gen [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/generated [no test files] ok github.com/google/syzkaller/executor 18.443s ok github.com/google/syzkaller/pkg/asset (cached) ok github.com/google/syzkaller/pkg/ast 1.222s 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] ? 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/freebsd/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia [no test files] ? github.com/google/syzkaller/sys/fuchsia/fidlgen [no test files] ? github.com/google/syzkaller/sys/fuchsia/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia/layout [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-fmt [no test files] ? github.com/google/syzkaller/tools/syz-hubtool [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] ? 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-upgrade [no test files] ? github.com/google/syzkaller/tools/syz-usbgen [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/pkg/bisect 222.843s ok github.com/google/syzkaller/pkg/bisect/minimize (cached) ok github.com/google/syzkaller/pkg/build 12.338s ok github.com/google/syzkaller/pkg/compiler 20.173s ok github.com/google/syzkaller/pkg/config (cached) ok github.com/google/syzkaller/pkg/corpus 1.523s ok github.com/google/syzkaller/pkg/cover 0.475s ok github.com/google/syzkaller/pkg/cover/backend 1.896s --- FAIL: TestGenerate (53.14s) --- FAIL: TestGenerate/test/64 (0.01s) testutil.go:33: seed=1712067545902836945 testutil.go:33: seed=1712067545911790837 --- FAIL: TestGenerate/test/64/14 (1.19s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul + procid*4); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul + procid*4); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); 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; } :311:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul + procid*4); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor485925239 -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 (1.27s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :309:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor837384760 -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 (1.33s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :307:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3342437056 -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 (1.40s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); do_sandbox_none(); return 0; } :294:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor207925992 -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 (1.71s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :307:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1548084087 -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 (2.41s) 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:false Trace:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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) { fprintf(stderr, "### start\n"); 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = syscall(SYS_mutate8, /*a0=*/0x65ul); fprintf(stderr, "### call=0 errno=%u\n", res == -1 ? errno : 0); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; res = syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=1 errno=%u\n", res == -1 ? errno : 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); res = syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); fprintf(stderr, "### call=2 errno=%u\n", res == -1 ? errno : 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: res = syscall(SYS_mutate8, /*a0=*/0x66ul); fprintf(stderr, "### call=3 errno=%u\n", res == -1 ? errno : 0); break; case 4: res = syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); fprintf(stderr, "### call=4 errno=%u\n", res == -1 ? errno : 0); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; res = syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=5 errno=%u\n", res == -1 ? errno : 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=6 errno=%u\n", res == -1 ? errno : 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=7 errno=%u\n", res == -1 ? errno : 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=8 errno=%u\n", res == -1 ? errno : 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; res = syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=9 errno=%u\n", res == -1 ? errno : 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; res = -1; errno = EFAULT; res = syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); fprintf(stderr, "### call=10 errno=%u\n", res == -1 ? errno : 0); break; case 11: res = -1; errno = EFAULT; res = syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); fprintf(stderr, "### call=11 errno=%u\n", res == -1 ? errno : 0); break; case 12: res = -1; errno = EFAULT; res = syz_errno(/*v=*/8); fprintf(stderr, "### call=12 errno=%u\n", res == -1 ? errno : 0); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000080); fprintf(stderr, "### call=13 errno=%u\n", res == -1 ? errno : 0); break; case 14: res = -1; errno = EFAULT; res = syz_exit(/*status=*/8); fprintf(stderr, "### call=14 errno=%u\n", res == -1 ? errno : 0); break; case 15: res = -1; errno = EFAULT; res = syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); fprintf(stderr, "### call=15 errno=%u\n", res == -1 ? errno : 0); break; case 16: res = -1; errno = EFAULT; res = syz_sleep_ms(/*ms=*/0xffffffffffff996a); fprintf(stderr, "### call=16 errno=%u\n", res == -1 ? errno : 0); break; case 17: res = -1; errno = EFAULT; res = syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); fprintf(stderr, "### call=17 errno=%u\n", res == -1 ? errno : 0); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :308:9: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] res = syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2757922942 -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/64/2 (1.64s) csource_test.go:150: opts: {Threaded:true Repeat:false 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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 loop(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); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :301:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2788233959 -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 (3.61s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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() { } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_one(void) { intptr_t res = 0; inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } syscall(SYS_mutate8, /*a0=*/0x66ul); syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); syz_errno(/*v=*/8); memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); syz_exit(/*status=*/8); syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); syz_sleep_ms(/*ms=*/0xffffffffffff996a); syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :155:2: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3991653612 -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 (2.31s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :307:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1330099324 -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 (4.05s) 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: mutate8(0x1) (fail_nth: 1) test$length1(&(0x7f0000000000)={0x0, 0x4}) (async) test$length22(&(0x7f0000000040)="0ad50007f545a2f0cb54b0befd294d5d81f726a08cda2c7b98f423fdf059ed78eff4a534cb6fd20a5486b25b902c9a0dc9b1e4370e360b96ebad1d6944af", 0x1f0) (rerun: 4) mutate8(0x2) mutate_array(0x81, 0x642f3ad, &(0x7f0000000080)) test$union0(&(0x7f00000000c0)={0x80, @f1=[0x8, 0xff, 0x8, 0x8000000000000000, 0x800, 0x3, 0x8001, 0x8, 0x6, 0xffffffff]}) test$output_res(&(0x7f0000000180)={0x0}) test$output_res(&(0x7f00000001c0)={0x0}) test$output_res(&(0x7f0000000200)={0x0}) test$optional_res(&(0x7f00000004c0)={&(0x7f0000000140), &(0x7f0000000280)=[r0, r1, r2, 0x0, 0x0, 0x0], &(0x7f00000003c0)={&(0x7f0000000300), [0x0, 0x0, 0x0, 0x0]}, &(0x7f0000000400), &(0x7f0000000480)}) syz_compare(&(0x7f0000000000)='*\\{\x00', 0x4, &(0x7f0000000040)=@overlay2={0x1ff, 0x400}, 0x10) syz_compare_int$2(0x2, 0x9, 0x9) syz_errno(0x8) syz_execute_func(&(0x7f0000000080)="63e06bc9ab2a8ae2a00479a25bd44b544a1d48daaa1a46923a491c0b3b9b500c296fc30d8393d6053846ceb3d84d28932814") syz_exit(0x8) syz_mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000) syz_sleep_ms(0xffffffffffff996a) syz_test_fuzzer1(0x4, 0x8, 0xe) 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_mutate8 #define SYS_mutate8 0 #endif #ifndef SYS_mutate_array #define SYS_mutate_array 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; } 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(); } uint64_t r[3] = {0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); syscall(SYS_mutate8, /*a0=*/0x65ul); break; case 1: *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 4; syscall(SYS_test, /*a0=*/0x20000000ul, 0, 0, 0, 0, 0); break; case 2: memcpy((void*)0x20000040, "\x0a\xd5\x00\x07\xf5\x45\xa2\xf0\xcb\x54\xb0\xbe\xfd\x29\x4d\x5d\x81\xf7\x26\xa0\x8c\xda\x2c\x7b\x98\xf4\x23\xfd\xf0\x59\xed\x78\xef\xf4\xa5\x34\xcb\x6f\xd2\x0a\x54\x86\xb2\x5b\x90\x2c\x9a\x0d\xc9\xb1\xe4\x37\x0e\x36\x0b\x96\xeb\xad\x1d\x69\x44\xaf", 62); syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); { int i; for(i = 0; i < 4; i++) { syscall(SYS_test, /*a0=*/0x20000040ul, /*a1=*/0xf0, 0, 0, 0, 0); } } break; case 3: syscall(SYS_mutate8, /*a0=*/0x66ul); break; case 4: syscall(SYS_mutate_array, /*i1=*/0x81ul, /*i2=*/0x642f3adul, /*vec=*/0x20000080ul); break; case 5: *(uint64_t*)0x200000c0 = 0x80; *(uint64_t*)0x200000c8 = 8; *(uint64_t*)0x200000d0 = 0xff; *(uint64_t*)0x200000d8 = 8; *(uint64_t*)0x200000e0 = 0x8000000000000000; *(uint64_t*)0x200000e8 = 0x800; *(uint64_t*)0x200000f0 = 3; *(uint64_t*)0x200000f8 = 0x8001; *(uint64_t*)0x20000100 = 8; *(uint64_t*)0x20000108 = 6; *(uint64_t*)0x20000110 = 0xffffffff; syscall(SYS_test, /*a0=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 6: res = syscall(SYS_test, /*arg=*/0x20000180ul, 0, 0, 0, 0, 0); if (res != -1) r[0] = *(uint32_t*)0x20000180; break; case 7: res = syscall(SYS_test, /*arg=*/0x200001c0ul, 0, 0, 0, 0, 0); if (res != -1) r[1] = *(uint32_t*)0x200001c0; break; case 8: res = syscall(SYS_test, /*arg=*/0x20000200ul, 0, 0, 0, 0, 0); if (res != -1) r[2] = *(uint32_t*)0x20000200; break; case 9: *(uint64_t*)0x200004c0 = 0x20000140; *(uint64_t*)0x200004c8 = 0x20000280; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = r[1]; *(uint32_t*)0x20000288 = r[2]; *(uint32_t*)0x2000028c = 0; *(uint32_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint64_t*)0x200004d0 = 0x200003c0; *(uint64_t*)0x200003c0 = 0x20000300; *(uint32_t*)0x20000300 = 0; *(uint32_t*)0x200003c8 = 0; *(uint32_t*)0x200003cc = 0; *(uint32_t*)0x200003d0 = 0; *(uint32_t*)0x200003d4 = 0; *(uint64_t*)0x200004d8 = 0x20000400; *(uint32_t*)0x20000400 = 0; *(uint64_t*)0x200004e0 = 0x20000480; *(uint32_t*)0x20000480 = 0; syscall(SYS_test, /*arg=*/0x200004c0ul, 0, 0, 0, 0, 0); break; case 10: memcpy((void*)0x20000000, "*\\{\000", 4); *(uint32_t*)0x20000040 = 0x1ff; *(uint32_t*)0x20000044 = 0x400; syz_compare(/*want=*/0x20000000, /*want_len=*/4, /*got=*/0x20000040, /*got_len=*/0x10); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/9, /*v1=*/9, 0, 0); break; case 12: syz_errno(/*v=*/8); break; case 13: memcpy((void*)0x20000080, "\x63\xe0\x6b\xc9\xab\x2a\x8a\xe2\xa0\x04\x79\xa2\x5b\xd4\x4b\x54\x4a\x1d\x48\xda\xaa\x1a\x46\x92\x3a\x49\x1c\x0b\x3b\x9b\x50\x0c\x29\x6f\xc3\x0d\x83\x93\xd6\x05\x38\x46\xce\xb3\xd8\x4d\x28\x93\x28\x14", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/8); break; case 15: syz_mmap(/*addr=*/0x20ffe000, /*len=*/0x1000); break; case 16: syz_sleep_ms(/*ms=*/0xffffffffffff996a); break; case 17: syz_test_fuzzer1(/*a=*/4, /*b=*/8, /*c=*/0xe); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :307:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_mutate8, /*a0=*/0x65ul); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2776963229 -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 (1.87s) csource_test.go:148: --- FAIL: TestGenerate/test/64/7 (2.14s) csource_test.go:148: --- FAIL: TestGenerate/test/64/6 (2.61s) csource_test.go:148: --- FAIL: TestGenerate/test/64/1 (2.63s) csource_test.go:148: FAIL FAIL github.com/google/syzkaller/pkg/csource 70.640s 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 71.588s ok github.com/google/syzkaller/pkg/gce (cached) ok github.com/google/syzkaller/pkg/host (cached) ok github.com/google/syzkaller/pkg/html (cached) ok github.com/google/syzkaller/pkg/ifuzz (cached) ok github.com/google/syzkaller/pkg/image (cached) ok github.com/google/syzkaller/pkg/instance 10.254s ok github.com/google/syzkaller/pkg/ipc 42.203s 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 11.586s ok github.com/google/syzkaller/pkg/osutil (cached) ok github.com/google/syzkaller/pkg/report 37.305s ok github.com/google/syzkaller/pkg/repro 11.779s ok github.com/google/syzkaller/pkg/runtest 139.794s 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 1.048s ok github.com/google/syzkaller/pkg/tool (cached) ok github.com/google/syzkaller/pkg/vcs (cached) ok github.com/google/syzkaller/prog (cached) ok github.com/google/syzkaller/prog/test (cached) ok github.com/google/syzkaller/sys/linux (cached) ok github.com/google/syzkaller/sys/netbsd (cached) ok github.com/google/syzkaller/sys/openbsd (cached) ok github.com/google/syzkaller/syz-ci 82.328s ok github.com/google/syzkaller/syz-fuzzer 1.739s ok github.com/google/syzkaller/syz-hub 0.847s ok github.com/google/syzkaller/syz-hub/state 1.606s ok github.com/google/syzkaller/syz-manager 28.133s ok github.com/google/syzkaller/syz-verifier 14.691s 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 21.507s ok github.com/google/syzkaller/tools/syz-trace2syz/parser (cached) ok github.com/google/syzkaller/tools/syz-trace2syz/proggen (cached) ok github.com/google/syzkaller/vm 29.717s ok github.com/google/syzkaller/vm/isolated 19.443s ok github.com/google/syzkaller/vm/proxyapp 17.995s ok github.com/google/syzkaller/vm/vmimpl 13.391s FAIL