? github.com/google/syzkaller/dashboard/dashapi [no test files] ok github.com/google/syzkaller/dashboard/app 0.249s ok github.com/google/syzkaller/executor 5.387s ok github.com/google/syzkaller/pkg/asset 0.846s ok github.com/google/syzkaller/pkg/ast 1.188s ok github.com/google/syzkaller/pkg/auth (cached) ? github.com/google/syzkaller/pkg/debugtracer [no test files] ? github.com/google/syzkaller/pkg/gce [no test files] ? github.com/google/syzkaller/pkg/gcs [no test files] ? github.com/google/syzkaller/pkg/hash [no test files] ? github.com/google/syzkaller/pkg/html/pages [no test files] ? github.com/google/syzkaller/pkg/ifuzz/iset [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc/generated [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86 [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/gen [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/generated [no test files] ? 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/signal [no test files] ? github.com/google/syzkaller/pkg/testutil [no test files] ? github.com/google/syzkaller/pkg/tools [no test files] ok github.com/google/syzkaller/pkg/bisect 148.864s ok github.com/google/syzkaller/pkg/bisect/minimize 0.121s ok github.com/google/syzkaller/pkg/build 7.216s ok github.com/google/syzkaller/pkg/compiler 14.676s ok github.com/google/syzkaller/pkg/config (cached) ok github.com/google/syzkaller/pkg/cover (cached) ok github.com/google/syzkaller/pkg/cover/backend (cached) --- FAIL: TestGenerate (19.72s) --- FAIL: TestGenerate/openbsd/amd64 (0.36s) testutil.go:33: seed=1689883316246883853 testutil.go:33: seed=1689883316512886741 --- FAIL: TestGenerate/openbsd/amd64/0 (1.81s) 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: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static void setup_fault() { } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { if (setsid() == -1) exit(1); struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } static long syz_execute_func(volatile long text) { ((void (*)(void))(text))(); return 0; } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); syz_open_pts(); } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :200:2: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3501332191 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/5 (2.20s) 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: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static unsigned long long procid; static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30 + procid*1; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); for (procid = 0; procid < 4; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; } :343:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2049181300 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/8 (1.76s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:setuid 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: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int wait_for_loop(int pid) { if (pid < 0) exit(1); int status = 0; while (waitpid(-1, &status, WUNTRACED) != pid) { } return WEXITSTATUS(status); } static int do_sandbox_setuid(void) { int pid = fork(); if (pid != 0) return wait_for_loop(pid); sandbox_common(); char pwbuf[1024]; struct passwd *pw, pwres; if (getpwnam_r("nobody", &pwres, pwbuf, sizeof(pwbuf), &pw) != 0 || !pw) exit(1); if (setgroups(0, NULL)) exit(1); if (setgid(pw->pw_gid)) exit(1); if (setuid(pw->pw_uid)) exit(1); loop(); exit(1); } 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_setuid(); return 0; } :364:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor4076507867 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/7 (1.99s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox: 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: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); loop(); return 0; } :316:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2587069854 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/10 (1.79s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:9223372036854775807 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :341:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3287630541 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/9 (2.43s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:-9223372036854775808 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :341:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2475009441 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/6 (2.01s) csource_test.go:150: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 15000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :341:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor112635022 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/3 (2.49s) 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: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (; iter < 10; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :341:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2779343252 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/4 (2.59s) 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: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ break; case 1: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); if (res != -1) r[0] = res; break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); if (res != -1) r[1] = res; break; case 4: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); if (res != -1) r[2] = res; break; case 7: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); syz_execute_func(/*text=*/0x20000080); break; case 11: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :341:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3452983836 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/15 (2.30s) 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: mknodat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x8, 0x1a7485ea) (fail_nth: 1) r0 = fcntl$getown(0xffffffffffffffff, 0x5) (async) fcntl$setown(0xffffffffffffffff, 0x6, r0) (rerun: 4) r1 = socket$inet(0x2, 0x4, 0x94) ioctl$FIONREAD(r1, 0x4004667f, &(0x7f0000000040)) ioctl$BIOCLOCK(0xffffffffffffffff, 0x20004276) r2 = openat$zero(0xffffffffffffff9c, &(0x7f0000000080), 0x100, 0x0) r3 = fcntl$dupfd(r1, 0xa, r1) ioctl$BIOCSETIF(r3, 0x8020426c, &(0x7f00000000c0)={'tap', 0x0}) getsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f0000000100)=""/129, &(0x7f00000001c0)=0x81) syz_emit_ethernet(0x5d, &(0x7f0000000000)={@remote, @empty, [], {@generic={0x8037, "40d32e4f05b5fde259a827fcd316ec9a0847e3cd22ddba09c47b131b0cbd69b52a1302f641161c082bd92271ccf318f8cf4e42df6a433ee9959273a0af8140c7c70cab4a98fedf8044ab74da89ffaf"}}}) syz_execute_func(&(0x7f0000000080)="44ff15b6524320c4a16d7482fca60000f366420f01dcc463094b3ce776c4e1792b5200f30fbdc4640fed9026f90000c4c3094cf881440fae435b8fa9389a8000000000") syz_extract_tcp_res(&(0x7f0000000100), 0x1, 0x1) syz_open_pts() 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } 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 void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { 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 CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); 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 < 12; 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); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[4] = {0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "./file0\000", 8); inject_fault(1); res = -1; errno = EFAULT; NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ fprintf(stderr, "### call=0 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 1: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/5, 0); fprintf(stderr, "### call=1 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); if (res != -1) r[0] = res; break; case 2: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); fprintf(stderr, "### call=2 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); { int i; for(i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/-1, /*cmd=*/6, /*pid=*/r[0]); } } break; case 3: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/2, /*type=*/4, /*proto=*/0x94); fprintf(stderr, "### call=3 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); if (res != -1) r[1] = res; break; case 4: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667f, /*arg=*/0x20000040); fprintf(stderr, "### call=4 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 5: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0x20004276, 0); fprintf(stderr, "### call=5 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 6: memcpy((void*)0x20000080, "/dev/zero\000", 10); res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000080, /*flags=*/0x100, /*mode=*/0); fprintf(stderr, "### call=6 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); if (res != -1) r[2] = res; break; case 7: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(fcntl))(/*fd=*/r[1], /*cmd=*/0xa, /*arg=*/r[1]); fprintf(stderr, "### call=7 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); if (res != -1) r[3] = res; break; case 8: memcpy((void*)0x200000c0, "tap", 3); *(uint8_t*)0x200000c3 = 0x30; *(uint8_t*)0x200000c4 = 0; res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[3], /*cmd=*/0x8020426c, /*arg=*/0x200000c0); fprintf(stderr, "### call=8 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 9: *(uint32_t*)0x200001c0 = 0x81; res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(getsockopt))(/*fd=*/r[2], /*level=*/0, /*optname=*/1, /*optval=*/0x20000100, /*optlen=*/0x200001c0); fprintf(stderr, "### call=9 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 10: memcpy((void*)0x20000080, "\x44\xff\x15\xb6\x52\x43\x20\xc4\xa1\x6d\x74\x82\xfc\xa6\x00\x00\xf3\x66\x42\x0f\x01\xdc\xc4\x63\x09\x4b\x3c\xe7\x76\xc4\xe1\x79\x2b\x52\x00\xf3\x0f\xbd\xc4\x64\x0f\xed\x90\x26\xf9\x00\x00\xc4\xc3\x09\x4c\xf8\x81\x44\x0f\xae\x43\x5b\x8f\xa9\x38\x9a\x80\x00\x00\x00\x00", 67); res = -1; errno = EFAULT; res = syz_execute_func(/*text=*/0x20000080); fprintf(stderr, "### call=10 errno=%u\n", res == -1 ? errno : 0); break; case 11: res = -1; errno = EFAULT; res = syz_open_pts(); fprintf(stderr, "### call=11 errno=%u\n", res == -1 ? errno : 0); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :344:3: error: implicit declaration of function 'NONFAILING' is invalid in C99 [-Werror,-Wimplicit-function-declaration] NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(mknodat))(/*dirfd=*/-1, /*file=*/0x20000000, /*mode=*/8, /*dev=*/0x1a7485ea)); /* major = 133, minor = 1733866 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2724556711 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -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] --- FAIL: TestGenerate/openbsd/amd64/12 (1.97s) csource_test.go:148: --- FAIL: TestGenerate/openbsd/amd64/2 (1.60s) csource_test.go:148: --- FAIL: TestGenerate/openbsd/amd64/16 (2.15s) csource_test.go:148: --- FAIL: TestGenerate/openbsd/amd64/11 (2.41s) csource_test.go:148: --- FAIL: TestGenerate/openbsd/amd64/14 (1.58s) csource_test.go:148: --- FAIL: TestGenerate/openbsd/amd64/1 (2.19s) csource_test.go:148: FAIL FAIL github.com/google/syzkaller/pkg/csource 33.576s 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/host (cached) ok github.com/google/syzkaller/pkg/html 0.700s ok github.com/google/syzkaller/pkg/ifuzz (cached) ok github.com/google/syzkaller/pkg/image (cached) ok github.com/google/syzkaller/pkg/instance 4.460s ok github.com/google/syzkaller/pkg/ipc (cached) ok github.com/google/syzkaller/pkg/kconfig 0.201s ok github.com/google/syzkaller/pkg/kd (cached) ok github.com/google/syzkaller/pkg/log (cached) ok github.com/google/syzkaller/pkg/mgrconfig 13.459s ok github.com/google/syzkaller/pkg/osutil (cached) ok github.com/google/syzkaller/pkg/report (cached) ok github.com/google/syzkaller/pkg/repro 8.684s ok github.com/google/syzkaller/pkg/runtest (cached) ok github.com/google/syzkaller/pkg/serializer (cached) ok github.com/google/syzkaller/pkg/stats (cached) ok github.com/google/syzkaller/pkg/subsystem 0.232s ok github.com/google/syzkaller/pkg/subsystem/linux 0.352s ok github.com/google/syzkaller/pkg/subsystem/lists 1.329s ok github.com/google/syzkaller/pkg/symbolizer (cached) ok github.com/google/syzkaller/pkg/tool (cached) ok github.com/google/syzkaller/pkg/vcs 76.652s ? github.com/google/syzkaller/sys [no test files] ? github.com/google/syzkaller/sys/akaros/gen [no test files] ? github.com/google/syzkaller/sys/akaros [no test files] ? github.com/google/syzkaller/sys/darwin [no test files] ? github.com/google/syzkaller/sys/darwin/gen [no test files] ? github.com/google/syzkaller/sys/freebsd/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia [no test files] ? github.com/google/syzkaller/sys/freebsd [no test files] ? github.com/google/syzkaller/sys/fuchsia/layout [no test files] ? github.com/google/syzkaller/sys/fuchsia/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia/fidlgen [no test files] ? github.com/google/syzkaller/sys/linux/gen [no test files] ? github.com/google/syzkaller/sys/netbsd/gen [no test files] ? github.com/google/syzkaller/sys/openbsd/gen [no test files] ? github.com/google/syzkaller/sys/syz-extract [no test files] ? github.com/google/syzkaller/sys/syz-sysgen [no test files] ? github.com/google/syzkaller/sys/targets [no test files] ? github.com/google/syzkaller/sys/test [no test files] ? github.com/google/syzkaller/sys/test/gen [no test files] ? github.com/google/syzkaller/sys/trusty [no test files] ? github.com/google/syzkaller/sys/trusty/gen [no test files] ? github.com/google/syzkaller/sys/windows [no test files] ? github.com/google/syzkaller/sys/windows/gen [no test files] ? github.com/google/syzkaller/syz-runner [no test files] ? github.com/google/syzkaller/tools/syz-benchcmp [no test files] ? github.com/google/syzkaller/tools/syz-bisect [no test files] ? github.com/google/syzkaller/tools/syz-build [no test files] ? github.com/google/syzkaller/tools/syz-check [no test files] ? github.com/google/syzkaller/tools/syz-cover [no test files] ? github.com/google/syzkaller/tools/syz-crush [no test files] ? github.com/google/syzkaller/tools/syz-db [no test files] ? github.com/google/syzkaller/tools/syz-execprog [no test files] ? github.com/google/syzkaller/tools/syz-expand [no test files] ? github.com/google/syzkaller/tools/syz-fillreports [no test files] ? github.com/google/syzkaller/tools/syz-fmt [no test files] ? github.com/google/syzkaller/tools/syz-hubtool [no test files] ? github.com/google/syzkaller/tools/syz-kcidb [no test files] ? github.com/google/syzkaller/tools/syz-lore [no test files] ? github.com/google/syzkaller/tools/syz-make [no test files] ? github.com/google/syzkaller/tools/syz-minconfig [no test files] ? github.com/google/syzkaller/tools/syz-mutate [no test files] ? github.com/google/syzkaller/tools/syz-prog2c [no test files] ? github.com/google/syzkaller/tools/syz-query-subsystems [no test files] ? github.com/google/syzkaller/tools/syz-reporter [no test files] ? github.com/google/syzkaller/tools/syz-repro [no test files] ? github.com/google/syzkaller/tools/syz-reprolist [no test files] ? github.com/google/syzkaller/tools/syz-runtest [no test files] ? github.com/google/syzkaller/tools/syz-showprio [no test files] ? github.com/google/syzkaller/tools/syz-symbolize [no test files] ? github.com/google/syzkaller/tools/syz-stress [no test files] ? github.com/google/syzkaller/tools/syz-testbed [no test files] ? github.com/google/syzkaller/tools/syz-testbuild [no test files] ok github.com/google/syzkaller/prog 30.494s ? github.com/google/syzkaller/tools/syz-trace2syz [no test files] ? github.com/google/syzkaller/tools/syz-tty [no test files] ok github.com/google/syzkaller/prog/test (cached) ? github.com/google/syzkaller/tools/syz-usbgen [no test files] ? github.com/google/syzkaller/tools/syz-upgrade [no test files] 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 4.151s ok github.com/google/syzkaller/syz-fuzzer 1.237s ok github.com/google/syzkaller/syz-hub 0.359s ok github.com/google/syzkaller/syz-hub/state (cached) ok github.com/google/syzkaller/syz-manager 7.525s ok github.com/google/syzkaller/syz-verifier 5.587s ok github.com/google/syzkaller/tools/syz-kconf (cached) ok github.com/google/syzkaller/tools/syz-linter 4.928s ok github.com/google/syzkaller/tools/syz-trace2syz/parser (cached) ok github.com/google/syzkaller/tools/syz-trace2syz/proggen (cached) ? github.com/google/syzkaller/vm/adb [no test files] ? github.com/google/syzkaller/vm/bhyve [no test files] ? github.com/google/syzkaller/vm/cuttlefish [no test files] ? github.com/google/syzkaller/vm/gce [no test files] ? github.com/google/syzkaller/vm/gvisor [no test files] ? github.com/google/syzkaller/vm/kvm [no test files] ? github.com/google/syzkaller/vm/odroid [no test files] ? github.com/google/syzkaller/vm/proxyapp/mocks [no test files] ? github.com/google/syzkaller/vm/starnix [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/vmm [no test files] ? github.com/google/syzkaller/vm/vmware [no test files] ok github.com/google/syzkaller/vm 15.176s ok github.com/google/syzkaller/vm/isolated 3.169s ok github.com/google/syzkaller/vm/proxyapp 5.078s ok github.com/google/syzkaller/vm/vmimpl 2.075s FAIL