? 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/x86 [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc/generated [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] ? 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/tools [no test files] ? github.com/google/syzkaller/pkg/testutil [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/gen [no test files] ? github.com/google/syzkaller/sys/darwin [no test files] ? github.com/google/syzkaller/sys/freebsd [no test files] ? github.com/google/syzkaller/sys/fuchsia [no test files] ? github.com/google/syzkaller/sys/freebsd/gen [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-bisect [no test files] ? github.com/google/syzkaller/tools/syz-benchcmp [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-crush [no test files] ? github.com/google/syzkaller/tools/syz-cover [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] ok github.com/google/syzkaller/executor 17.830s ok github.com/google/syzkaller/pkg/asset (cached) ok github.com/google/syzkaller/pkg/ast 1.455s ok github.com/google/syzkaller/pkg/auth (cached) ok github.com/google/syzkaller/pkg/bisect (cached) ok github.com/google/syzkaller/pkg/bisect/minimize (cached) ok github.com/google/syzkaller/pkg/build (cached) ? github.com/google/syzkaller/tools/syz-kcidb [no test files] ok github.com/google/syzkaller/pkg/compiler 15.579s ok github.com/google/syzkaller/pkg/config (cached) ok github.com/google/syzkaller/pkg/corpus (cached) ok github.com/google/syzkaller/pkg/cover (cached) ok github.com/google/syzkaller/pkg/cover/backend (cached) ? 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-mutate [no test files] ? github.com/google/syzkaller/tools/syz-prog2c [no test files] ? github.com/google/syzkaller/tools/syz-minconfig [no test files] ? github.com/google/syzkaller/tools/syz-reporter [no test files] ? github.com/google/syzkaller/tools/syz-query-subsystems [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-symbolize [no test files] ? github.com/google/syzkaller/tools/syz-stress [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/odroid [no test files] ? github.com/google/syzkaller/vm/kvm [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] --- FAIL: TestGenerate (16.75s) --- FAIL: TestGenerate/test/64 (0.01s) testutil.go:33: seed=1711640840544287831 testutil.go:33: seed=1711640840549490062 --- FAIL: TestGenerate/test/64/5 (1.10s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static unsigned long long procid; static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); for (procid = 0; procid < 4; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; } :324:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1936564402 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/3 (1.12s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :322:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor86658974 -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 (0.89s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :322:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1548597341 -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 (1.35s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :324:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1988745832 -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/64/6 (1.39s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 500); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :322:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor4193022454 -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 (1.40s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } static void execute_one(void); static void loop(void) { execute_one(); } void execute_one(void) { memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); syz_errno(/*v=*/2); memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); syz_exit(/*status=*/0x7fff); syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); syz_sleep_ms(/*ms=*/0xc93); syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :164:2: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor298722318 -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 (1.10s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void 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); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :316:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3894291543 -DGOOS_test=1 -DGOARCH_64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument -no-pie -fno-exceptions] --- FAIL: TestGenerate/test/64/14 (1.14s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static unsigned long long procid; static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); 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; } :326:3: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2506049712 -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 (1.08s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 18; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); static void loop(void) { execute_one(); } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); syz_execute_func(/*text=*/0x20000000); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); syz_execute_func(/*text=*/0x20000040); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); syz_execute_func(/*text=*/0x20000080); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); syz_execute_func(/*text=*/0x20000100); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); syz_execute_func(/*text=*/0x20000140); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); syz_execute_func(/*text=*/0x20000180); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); syz_execute_func(/*text=*/0x20000280); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); break; case 11: syz_compare_int(/*n=*/2, /*v0=*/3, /*v1=*/4, 0, 0); break; case 12: syz_errno(/*v=*/2); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 50); syz_execute_func(/*text=*/0x20000080); break; case 14: syz_exit(/*status=*/0x7fff); break; case 15: syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); break; case 16: syz_sleep_ms(/*ms=*/0xc93); break; case 17: syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); break; } } int main(void) { syz_mmap(/*addr=*/0x20000000, /*len=*/0x1000000); setup_fault(); 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_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2739873561 -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 (0.97s) 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: syz_execute_func(&(0x7f0000000000)="a3a200404c3e20f3b1473340c40583c4c56e7c736718ac7ddfa22a54ed4d8e60a97bb93d9a160403f3fd4fe143dfa3d90975") (fail_nth: 1) syz_execute_func(&(0x7f0000000040)="0af57d461c7e63c87873e853dc8e1b59e58d20bd2a4aa97911b170bb6aa04be7bf6d9989e900af24dc536e9046bb4904c308") (async) syz_execute_func(&(0x7f0000000080)="f2272fda2fa1fc53ecccac66f37d4f698457b285ad3e2127ddcd935af90a53cdb2798bc3a1bf23d08f0a300db2eb29fc6c80") (rerun: 4) test$out_const(&(0x7f00000000c0)) syz_execute_func(&(0x7f0000000100)="ca7dec0c06dd56277c136d36aeaebfa08a71c9983dd67330af3fa4a53b0e75fbd5a7e87804f7c570715563524ff6fae26f5b") syz_execute_func(&(0x7f0000000140)="7da4d7827880d4995ca56186d57b1282231b786d5bc2d4cbc9c0637d7f733c26f5bec1c01ac6dadbfe2432eaab428b5524ea") syz_execute_func(&(0x7f0000000180)="e9e43cde4f8b29b204cad5887726afc9a3fba5bb29c4cb3e2b7d27d2a3d1df3a0afb0fdd3d9206a4fbf4fe9b1462b52aac16") test$regression0(&(0x7f0000000240)={&(0x7f00000001c0)=""/90}) syz_execute_func(&(0x7f0000000280)="10e19c4fc7b27b4d7c744128cacbb503c56c6a1895820a8adb9e25c3075163d034d9e31da9bef660fa4d5abf3ab111511074") foo$fmt1(&(0x7f00000002c0)=0x1) syz_compare(&(0x7f0000000000)='\\-)+%}\x00', 0x7, &(0x7f0000000040)=@bf25={0x91, {0x8, 0x20, 0x0, 0x0, 0x5}}, 0xc) syz_compare_int$2(0x2, 0x3, 0x4) syz_errno(0x2) syz_execute_func(&(0x7f0000000080)="2407bafa6d44c7f77be0634ed0126e5511442c0f62344e9f2eaa5067cf0f514d980a3d282a43d95c60a7f6aef17d9dae4284") syz_exit(0x7fff) syz_mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000) syz_sleep_ms(0xc93) syz_test_fuzzer1(0xb, 0x2, 0x6) 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_foo #define SYS_foo 0 #endif #ifndef SYS_test #define SYS_test 0 #endif static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static long syz_mmap(volatile long a0, volatile long a1) { return (long)mmap((void*)a0, a1, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0); } static long syz_errno(volatile long v) { errno = v; return v == 0 ? 0 : -1; } static long syz_exit(volatile long status) { _exit(status); return 0; } static long syz_sleep_ms(volatile long ms) { sleep_ms(ms); return 0; } static long syz_compare(volatile long want, volatile long want_len, volatile long got, volatile long got_len) { if (want_len != got_len) { errno = EBADF; goto error; } if (memcmp((void*)want, (void*)got, want_len)) { errno = EINVAL; goto error; } return 0; error: return -1; } static long syz_compare_int(volatile long n, ...) { va_list args; va_start(args, n); long v0 = va_arg(args, long); long v1 = va_arg(args, long); long v2 = va_arg(args, long); long v3 = va_arg(args, long); va_end(args); if (n < 2 || n > 4) return errno = E2BIG, -1; if (n <= 2 && v2 != 0) return errno = EFAULT, -1; if (n <= 3 && v3 != 0) return errno = EFAULT, -1; if (v0 != v1) return errno = EINVAL, -1; if (n > 2 && v0 != v2) return errno = EINVAL, -1; if (n > 3 && v0 != v3) return errno = EINVAL, -1; return 0; } static void loop(); static int do_sandbox_none(void) { loop(); return 0; } static void fake_crash(const char* name) { exit(1); exit(1); } static long syz_test_fuzzer1(volatile long a, volatile long b, volatile long c) { if (a == 1 && b == 1 && c == 1) fake_crash("first bug"); if (a == 1 && b == 2 && c == 3) fake_crash("second bug"); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { 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(); } void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "\xa3\xa2\x00\x40\x4c\x3e\x20\xf3\xb1\x47\x33\x40\xc4\x05\x83\xc4\xc5\x6e\x7c\x73\x67\x18\xac\x7d\xdf\xa2\x2a\x54\xed\x4d\x8e\x60\xa9\x7b\xb9\x3d\x9a\x16\x04\x03\xf3\xfd\x4f\xe1\x43\xdf\xa3\xd9\x09\x75", 50); inject_fault(1); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000000); fprintf(stderr, "### call=0 errno=%u\n", res == -1 ? errno : 0); break; case 1: memcpy((void*)0x20000040, "\x0a\xf5\x7d\x46\x1c\x7e\x63\xc8\x78\x73\xe8\x53\xdc\x8e\x1b\x59\xe5\x8d\x20\xbd\x2a\x4a\xa9\x79\x11\xb1\x70\xbb\x6a\xa0\x4b\xe7\xbf\x6d\x99\x89\xe9\x00\xaf\x24\xdc\x53\x6e\x90\x46\xbb\x49\x04\xc3\x08", 50); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000040); fprintf(stderr, "### call=1 errno=%u\n", res == -1 ? errno : 0); break; case 2: memcpy((void*)0x20000080, "\xf2\x27\x2f\xda\x2f\xa1\xfc\x53\xec\xcc\xac\x66\xf3\x7d\x4f\x69\x84\x57\xb2\x85\xad\x3e\x21\x27\xdd\xcd\x93\x5a\xf9\x0a\x53\xcd\xb2\x79\x8b\xc3\xa1\xbf\x23\xd0\x8f\x0a\x30\x0d\xb2\xeb\x29\xfc\x6c\x80", 50); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000080); fprintf(stderr, "### call=2 errno=%u\n", res == -1 ? errno : 0); { int i; for(i = 0; i < 4; i++) { syz_execute_func(/*text=*/0x20000080); } } break; case 3: res = syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=3 errno=%u\n", res == -1 ? errno : 0); break; case 4: memcpy((void*)0x20000100, "\xca\x7d\xec\x0c\x06\xdd\x56\x27\x7c\x13\x6d\x36\xae\xae\xbf\xa0\x8a\x71\xc9\x98\x3d\xd6\x73\x30\xaf\x3f\xa4\xa5\x3b\x0e\x75\xfb\xd5\xa7\xe8\x78\x04\xf7\xc5\x70\x71\x55\x63\x52\x4f\xf6\xfa\xe2\x6f\x5b", 50); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000100); fprintf(stderr, "### call=4 errno=%u\n", res == -1 ? errno : 0); break; case 5: memcpy((void*)0x20000140, "\x7d\xa4\xd7\x82\x78\x80\xd4\x99\x5c\xa5\x61\x86\xd5\x7b\x12\x82\x23\x1b\x78\x6d\x5b\xc2\xd4\xcb\xc9\xc0\x63\x7d\x7f\x73\x3c\x26\xf5\xbe\xc1\xc0\x1a\xc6\xda\xdb\xfe\x24\x32\xea\xab\x42\x8b\x55\x24\xea", 50); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000140); fprintf(stderr, "### call=5 errno=%u\n", res == -1 ? errno : 0); break; case 6: memcpy((void*)0x20000180, "\xe9\xe4\x3c\xde\x4f\x8b\x29\xb2\x04\xca\xd5\x88\x77\x26\xaf\xc9\xa3\xfb\xa5\xbb\x29\xc4\xcb\x3e\x2b\x7d\x27\xd2\xa3\xd1\xdf\x3a\x0a\xfb\x0f\xdd\x3d\x92\x06\xa4\xfb\xf4\xfe\x9b\x14\x62\xb5\x2a\xac\x16", 50); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000180); fprintf(stderr, "### call=6 errno=%u\n", res == -1 ? errno : 0); break; case 7: *(uint64_t*)0x20000240 = 0x200001c0; res = syscall(SYS_test, /*a0=*/0x20000240ul, 0, 0, 0, 0, 0); fprintf(stderr, "### call=7 errno=%u\n", res == -1 ? errno : 0); break; case 8: memcpy((void*)0x20000280, "\x10\xe1\x9c\x4f\xc7\xb2\x7b\x4d\x7c\x74\x41\x28\xca\xcb\xb5\x03\xc5\x6c\x6a\x18\x95\x82\x0a\x8a\xdb\x9e\x25\xc3\x07\x51\x63\xd0\x34\xd9\xe3\x1d\xa9\xbe\xf6\x60\xfa\x4d\x5a\xbf\x3a\xb1\x11\x51\x10\x74", 50); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000280); fprintf(stderr, "### call=8 errno=%u\n", res == -1 ? errno : 0); break; case 9: sprintf((char*)0x200002c0, "0x%016llx", (long long)1); res = syscall(SYS_foo, /*a=*/0x200002c0ul, 0, 0); fprintf(stderr, "### call=9 errno=%u\n", res == -1 ? errno : 0); break; case 10: memcpy((void*)0x20000000, "\\-)+%}\000", 7); *(uint8_t*)0x20000040 = 0x91; *(uint16_t*)0x20000044 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000046, 0x20, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000047, 0, 7, 1); *(uint16_t*)0x20000048 = 5; res = -1; errno = EFAULT; res = syz_compare(/*want=*/0x20000000, /*want_len=*/7, /*got=*/0x20000040, /*got_len=*/0xc); 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=*/3, /*v1=*/4, 0, 0); fprintf(stderr, "### call=11 errno=%u\n", res == -1 ? errno : 0); break; case 12: res = -1; errno = EFAULT; res = syz_errno(/*v=*/2); fprintf(stderr, "### call=12 errno=%u\n", res == -1 ? errno : 0); break; case 13: memcpy((void*)0x20000080, "\x24\x07\xba\xfa\x6d\x44\xc7\xf7\x7b\xe0\x63\x4e\xd0\x12\x6e\x55\x11\x44\x2c\x0f\x62\x34\x4e\x9f\x2e\xaa\x50\x67\xcf\x0f\x51\x4d\x98\x0a\x3d\x28\x2a\x43\xd9\x5c\x60\xa7\xf6\xae\xf1\x7d\x9d\xae\x42\x84", 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=*/0x7fff); fprintf(stderr, "### call=14 errno=%u\n", res == -1 ? errno : 0); break; case 15: res = -1; errno = EFAULT; res = syz_mmap(/*addr=*/0x20ff9000, /*len=*/0x4000); fprintf(stderr, "### call=15 errno=%u\n", res == -1 ? errno : 0); break; case 16: res = -1; errno = EFAULT; res = syz_sleep_ms(/*ms=*/0xc93); fprintf(stderr, "### call=16 errno=%u\n", res == -1 ? errno : 0); break; case 17: res = -1; errno = EFAULT; res = syz_test_fuzzer1(/*a=*/0xb, /*b=*/2, /*c=*/6); 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; } :333:9: error: call to undeclared function 'syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] res = syscall(SYS_test, /*a1=*/0x200000c0ul, 0, 0, 0, 0, 0); ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1579866652 -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/64/7 (1.12s) csource_test.go:148: --- FAIL: TestGenerate/test/64/9 (1.34s) csource_test.go:148: --- FAIL: TestGenerate/test/64/8 (1.28s) csource_test.go:148: --- FAIL: TestGenerate/test/64/1 (1.32s) csource_test.go:148: FAIL FAIL github.com/google/syzkaller/pkg/csource 27.146s 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 (cached) 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 (cached) ok github.com/google/syzkaller/pkg/ipc (cached) 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 (cached) ok github.com/google/syzkaller/pkg/osutil (cached) ok github.com/google/syzkaller/pkg/report (cached) ok github.com/google/syzkaller/pkg/repro (cached) ok github.com/google/syzkaller/pkg/runtest (cached) ok github.com/google/syzkaller/pkg/serializer (cached) ok github.com/google/syzkaller/pkg/signal (cached) ok github.com/google/syzkaller/pkg/stats (cached) ok github.com/google/syzkaller/pkg/subsystem (cached) ok github.com/google/syzkaller/pkg/subsystem/linux (cached) ok github.com/google/syzkaller/pkg/subsystem/lists (cached) ok github.com/google/syzkaller/pkg/symbolizer (cached) ok github.com/google/syzkaller/pkg/tool (cached) ok github.com/google/syzkaller/pkg/vcs (cached) 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 (cached) ok github.com/google/syzkaller/syz-fuzzer (cached) ok github.com/google/syzkaller/syz-hub (cached) ok github.com/google/syzkaller/syz-hub/state (cached) ok github.com/google/syzkaller/syz-manager (cached) ok github.com/google/syzkaller/syz-verifier (cached) 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 (cached) 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 (cached) ok github.com/google/syzkaller/vm/isolated (cached) ok github.com/google/syzkaller/vm/proxyapp (cached) ok github.com/google/syzkaller/vm/vmimpl (cached) FAIL