ok github.com/google/syzkaller/dashboard/app (cached) ? github.com/google/syzkaller/dashboard/dashapi [no test files] ok github.com/google/syzkaller/executor 1.072s ok github.com/google/syzkaller/pkg/ast 3.957s ok github.com/google/syzkaller/pkg/auth (cached) ok github.com/google/syzkaller/pkg/bisect 98.483s ok github.com/google/syzkaller/pkg/build 5.017s ok github.com/google/syzkaller/pkg/compiler 38.504s ? github.com/google/syzkaller/pkg/config [no test files] ok github.com/google/syzkaller/pkg/cover (cached) ok github.com/google/syzkaller/pkg/cover/backend (cached) --- FAIL: TestGenerate (57.41s) --- FAIL: TestGenerate/openbsd/amd64 (0.30s) csource_test.go:52: seed=1633333574359382569 --- FAIL: TestGenerate/openbsd/amd64/7 (2.60s) csource_test.go:118: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:10 Sandbox:none Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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 < 14; 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); 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 10: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :339:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :337:3: note: previous statement is here if (current_time_ms() - start < 15000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor4258339254 -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] --- FAIL: TestGenerate/openbsd/amd64/15 (2.88s) csource_test.go:118: opts: {Threaded:true Collide:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:1 Sandbox:none Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:true Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; int collide = 0; again: for (call = 0; call < 14; 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 (collide && (call % 2) == 0) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); if (!collide) { collide = 1; goto again; } } 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 10: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); for (procid = 0; procid < 2; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; } :351:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :349:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1096045721 -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] --- FAIL: TestGenerate/openbsd/amd64/13 (4.31s) csource_test.go:118: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:true Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 14; 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); 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 10: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :341:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :339:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor4069748743 -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] --- FAIL: TestGenerate/openbsd/amd64/14 (4.58s) csource_test.go:118: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:false Trace:true LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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 < 14; 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); 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); fprintf(stderr, "### call=0 errno=%u\n", res == -1 ? errno : 0); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; res = syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); fprintf(stderr, "### call=1 errno=%u\n", res == -1 ? errno : 0); break; case 2: res = syscall(SYS_fsync, r[0]); fprintf(stderr, "### call=2 errno=%u\n", res == -1 ? errno : 0); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; res = syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); fprintf(stderr, "### call=3 errno=%u\n", res == -1 ? errno : 0); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); fprintf(stderr, "### call=4 errno=%u\n", res == -1 ? errno : 0); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; res = syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); fprintf(stderr, "### call=5 errno=%u\n", res == -1 ? errno : 0); break; case 6: res = syscall(SYS_dup, r[1]); fprintf(stderr, "### call=6 errno=%u\n", res == -1 ? errno : 0); if (res != -1) r[2] = res; break; case 7: res = syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); fprintf(stderr, "### call=7 errno=%u\n", res == -1 ? errno : 0); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; res = syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); fprintf(stderr, "### call=8 errno=%u\n", res == -1 ? errno : 0); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); res = -1; errno = EFAULT; res = syz_execute_func(0x20000080); fprintf(stderr, "### call=9 errno=%u\n", res == -1 ? errno : 0); break; case 10: res = -1; errno = EFAULT; res = syz_open_pts(); fprintf(stderr, "### call=10 errno=%u\n", res == -1 ? errno : 0); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :340:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :338:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor384162420 -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] --- FAIL: TestGenerate/openbsd/amd64/8 (2.01s) csource_test.go:118: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox: Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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 < 14; 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); 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 10: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); loop(); return 0; } :314:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :312:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2063985757 -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] --- FAIL: TestGenerate/openbsd/amd64/11 (5.50s) csource_test.go:118: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:false HandleSegv:false Repro:false Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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 int inject_fault(int nth) { return 0; } static void setup_fault() { } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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 < 14; 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); 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++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { 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; } } } uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 10: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); do_sandbox_none(); return 0; } :287:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :285:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1547132934 -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] --- FAIL: TestGenerate/openbsd/amd64/10 (5.72s) csource_test.go:118: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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 int tunfd = -1; #define MAX_TUN 4 #define TUN_IFACE "tap%d" #define TUN_DEVICE "/dev/tap%d" #define LOCAL_MAC "aa:aa:aa:aa:aa:aa" #define REMOTE_MAC "aa:aa:aa:aa:aa:bb" #define LOCAL_IPV4 "172.20.%d.170" #define REMOTE_IPV4 "172.20.%d.187" #define LOCAL_IPV6 "fe80::%02hxaa" #define REMOTE_IPV6 "fe80::%02hxbb" static void vsnprintf_check(char* str, size_t size, const char* format, va_list args) { int rv = vsnprintf(str, size, format, args); if (rv < 0) exit(1); if ((size_t)rv >= size) exit(1); } static void snprintf_check(char* str, size_t size, const char* format, ...) { va_list args; va_start(args, format); vsnprintf_check(str, size, format, args); va_end(args); } #define COMMAND_MAX_LEN 128 #define PATH_PREFIX "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin " #define PATH_PREFIX_LEN (sizeof(PATH_PREFIX) - 1) static void execute_command(bool panic, const char* format, ...) { va_list args; va_start(args, format); char command[PATH_PREFIX_LEN + COMMAND_MAX_LEN]; memcpy(command, PATH_PREFIX, PATH_PREFIX_LEN); vsnprintf_check(command + PATH_PREFIX_LEN, COMMAND_MAX_LEN, format, args); va_end(args); int rv = system(command); if (rv) { if (panic) exit(1); } } static void initialize_tun(int tun_id) { if (tun_id < 0 || tun_id >= MAX_TUN) exit(1); char tun_device[sizeof(TUN_DEVICE)]; snprintf_check(tun_device, sizeof(tun_device), TUN_DEVICE, tun_id); char tun_iface[sizeof(TUN_IFACE)]; snprintf_check(tun_iface, sizeof(tun_iface), TUN_IFACE, tun_id); execute_command(0, "ifconfig %s destroy", tun_iface); tunfd = open(tun_device, O_RDWR | O_NONBLOCK); if (tunfd == -1) { printf("tun: can't open %s: errno=%d\n", tun_device, errno); return; } const int kTunFd = 240; if (dup2(tunfd, kTunFd) < 0) exit(1); close(tunfd); tunfd = kTunFd; char local_mac[sizeof(LOCAL_MAC)]; snprintf_check(local_mac, sizeof(local_mac), LOCAL_MAC); execute_command(1, "ifconfig %s lladdr %s", tun_iface, local_mac); char local_ipv4[sizeof(LOCAL_IPV4)]; snprintf_check(local_ipv4, sizeof(local_ipv4), LOCAL_IPV4, tun_id); execute_command(1, "ifconfig %s inet %s netmask 255.255.255.0", tun_iface, local_ipv4); char remote_mac[sizeof(REMOTE_MAC)]; char remote_ipv4[sizeof(REMOTE_IPV4)]; snprintf_check(remote_mac, sizeof(remote_mac), REMOTE_MAC); snprintf_check(remote_ipv4, sizeof(remote_ipv4), REMOTE_IPV4, tun_id); execute_command(0, "arp -s %s %s", remote_ipv4, remote_mac); char local_ipv6[sizeof(LOCAL_IPV6)]; snprintf_check(local_ipv6, sizeof(local_ipv6), LOCAL_IPV6, tun_id); execute_command(1, "ifconfig %s inet6 %s", tun_iface, local_ipv6); char remote_ipv6[sizeof(REMOTE_IPV6)]; snprintf_check(remote_ipv6, sizeof(remote_ipv6), REMOTE_IPV6, tun_id); execute_command(0, "ndp -s %s%%%s %s", remote_ipv6, tun_iface, remote_mac); } static long syz_emit_ethernet(volatile long a0, volatile long a1) { if (tunfd < 0) return (uintptr_t)-1; size_t length = a0; const char* data = (char*)a1; return write(tunfd, data, length); } static int read_tun(char* data, int size) { if (tunfd < 0) return -1; int rv = read(tunfd, data, size); if (rv < 0) { if (errno == EAGAIN) return -1; exit(1); } return rv; } struct tcp_resources { uint32_t seq; uint32_t ack; }; static long syz_extract_tcp_res(volatile long a0, volatile long a1, volatile long a2) { if (tunfd < 0) return (uintptr_t)-1; char data[1000]; int rv = read_tun(&data[0], sizeof(data)); if (rv == -1) return (uintptr_t)-1; size_t length = rv; if (length < sizeof(struct ether_header)) return (uintptr_t)-1; struct ether_header* ethhdr = (struct ether_header*)&data[0]; struct tcphdr* tcphdr = 0; if (ethhdr->ether_type == htons(ETHERTYPE_IP)) { if (length < sizeof(struct ether_header) + sizeof(struct ip)) return (uintptr_t)-1; struct ip* iphdr = (struct ip*)&data[sizeof(struct ether_header)]; if (iphdr->ip_p != IPPROTO_TCP) return (uintptr_t)-1; if (length < sizeof(struct ether_header) + iphdr->ip_hl * 4 + sizeof(struct tcphdr)) return (uintptr_t)-1; tcphdr = (struct tcphdr*)&data[sizeof(struct ether_header) + iphdr->ip_hl * 4]; } else { if (length < sizeof(struct ether_header) + sizeof(struct ip6_hdr)) return (uintptr_t)-1; struct ip6_hdr* ipv6hdr = (struct ip6_hdr*)&data[sizeof(struct ether_header)]; if (ipv6hdr->ip6_nxt != IPPROTO_TCP) return (uintptr_t)-1; if (length < sizeof(struct ether_header) + sizeof(struct ip6_hdr) + sizeof(struct tcphdr)) return (uintptr_t)-1; tcphdr = (struct tcphdr*)&data[sizeof(struct ether_header) + sizeof(struct ip6_hdr)]; } struct tcp_resources* res = (struct tcp_resources*)a0; res->seq = htonl(ntohl(tcphdr->th_seq) + (uint32_t)a1); res->ack = htonl(ntohl(tcphdr->th_ack) + (uint32_t)a2); return 0; } 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(); initialize_tun(procid); 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 < 14; 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); 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memset((void*)0x20000200, 255, 6); memset((void*)0x20000206, 255, 6); *(uint16_t*)0x2000020c = htobe16(0x8100); STORE_BY_BITMASK(uint16_t, , 0x2000020e, 3, 0, 3); STORE_BY_BITMASK(uint16_t, , 0x2000020e, 0, 3, 1); STORE_BY_BITMASK(uint16_t, , 0x2000020e, 4, 4, 12); *(uint16_t*)0x20000210 = htobe16(0x806); *(uint16_t*)0x20000212 = htobe16(1); *(uint16_t*)0x20000214 = htobe16(0x800); *(uint8_t*)0x20000216 = 6; *(uint8_t*)0x20000217 = 4; *(uint16_t*)0x20000218 = htobe16(8); memcpy((void*)0x2000021a, "\x06\x2a\xd6\xd2\xe4\x79", 6); *(uint32_t*)0x20000220 = htobe32(0x7f000001); memcpy((void*)0x20000224, "\xd5\x7f\x99\x98\x2d\xbe", 6); *(uint8_t*)0x2000022a = 0xac; *(uint8_t*)0x2000022b = 0x14; *(uint8_t*)0x2000022c = 0; *(uint8_t*)0x2000022d = 0xaa; syz_emit_ethernet(0x2e, 0x20000200); break; case 10: memset((void*)0x20000000, 170, 5); *(uint8_t*)0x20000005 = 0xbb; memset((void*)0x20000006, 255, 6); *(uint16_t*)0x2000000c = htobe16(0x88a8); STORE_BY_BITMASK(uint16_t, , 0x2000000e, 1, 0, 3); STORE_BY_BITMASK(uint16_t, , 0x2000000e, 0, 3, 1); STORE_BY_BITMASK(uint16_t, , 0x2000000e, 4, 4, 12); *(uint16_t*)0x20000010 = htobe16(0x8100); STORE_BY_BITMASK(uint16_t, , 0x20000012, 1, 0, 3); STORE_BY_BITMASK(uint16_t, , 0x20000012, 1, 3, 1); STORE_BY_BITMASK(uint16_t, , 0x20000012, 3, 4, 12); *(uint16_t*)0x20000014 = htobe16(0x800); STORE_BY_BITMASK(uint8_t, , 0x20000016, 0xe, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x20000016, 4, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x20000017, 1, 0, 2); STORE_BY_BITMASK(uint8_t, , 0x20000017, 0x26, 2, 6); *(uint16_t*)0x20000018 = htobe16(0x38); *(uint16_t*)0x2000001a = htobe16(0x65); *(uint16_t*)0x2000001c = htobe16(8); *(uint8_t*)0x2000001e = 0x9f; *(uint8_t*)0x2000001f = 0x32; *(uint16_t*)0x20000020 = htobe16(0); *(uint32_t*)0x20000022 = htobe32(0x7f000001); *(uint32_t*)0x20000026 = htobe32(5); *(uint8_t*)0x2000002a = 0; *(uint8_t*)0x2000002b = 0xa; memcpy((void*)0x2000002c, "\x52\x98\x96\xf3\xa5\x0d\xfe\x03", 8); *(uint8_t*)0x20000034 = 0x89; *(uint8_t*)0x20000035 = 0xb; *(uint8_t*)0x20000036 = 0xf8; *(uint32_t*)0x20000037 = htobe32(-1); *(uint32_t*)0x2000003b = htobe32(-1); *(uint8_t*)0x2000003f = 0x89; *(uint8_t*)0x20000040 = 0xf; *(uint8_t*)0x20000041 = 0x81; *(uint32_t*)0x20000042 = htobe32(4); *(uint32_t*)0x20000046 = htobe32(0); *(uint8_t*)0x2000004a = 0xac; *(uint8_t*)0x2000004b = 0x14; *(uint8_t*)0x2000004c = 0; *(uint8_t*)0x2000004d = 0xbb; struct csum_inet csum_1; csum_inet_init(&csum_1); csum_inet_update(&csum_1, (const uint8_t*)0x20000016, 56); *(uint16_t*)0x20000020 = csum_inet_digest(&csum_1); syz_emit_ethernet(0x4e, 0x20000000); break; case 11: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 12: syz_extract_tcp_res(0x200000c0, 7, 0); break; case 13: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :506:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :504:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2584297397 -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] --- FAIL: TestGenerate/openbsd/amd64/0 (6.66s) csource_test.go:118: opts: {Threaded:false Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (rmdir(dir)) exit(1); } static int inject_fault(int nth) { return 0; } static void setup_fault() { } #define BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); syscall(SYS_fsync, r[0]); *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); syz_open_pts(); } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :202:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :200:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3445955328 -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] --- FAIL: TestGenerate/openbsd/amd64/9 (4.63s) csource_test.go:118: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:setuid Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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 < 14; 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); 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 10: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); do_sandbox_setuid(); return 0; } :362:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :360:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3142429824 -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] --- FAIL: TestGenerate/openbsd/amd64/2 (2.19s) csource_test.go:118: opts: {Threaded:true Collide:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false UseTmpDir:true HandleSegv:false Repro:false Trace:false LegacyOptions:{Fault:false FaultCall:0 FaultNth:0}} program: r0 = openat$null(0xffffffffffffff9c, &(0x7f0000000000), 0x80, 0x0) (fail_nth: 1) ioctl$WSDISPLAYIO_LDFONT(r0, 0x8058574d, &(0x7f0000000040)={'./file0\x00', 0x0, 0xffff, 0x2, 0x1, 0x8, 0x5, 0x80000001, 0x0, 0x2, 0x9, 0x8000}) fsync(r0) ioctl$WSKBDIO_SETBELL(0xffffffffffffffff, 0x80105703, &(0x7f00000000c0)={0x200, 0x8, 0x7, 0xffffffff}) r1 = openat$pf(0xffffffffffffff9c, &(0x7f0000000100), 0x20, 0x0) ioctl$WSKBDIO_SETDEFAULTKEYREPEAT(r1, 0x800c5709, &(0x7f0000000140)={0x22, 0x3, 0xffffffff}) r2 = dup(r1) ioctl$WSKBDIO_GETENCODING(r2, 0x4004570f, &(0x7f0000000180)) ioctl$WSKBDIO_SETBACKLIGHT(r0, 0x800c5712, &(0x7f00000001c0)={0x200, 0x10001, 0x3ff}) syz_emit_ethernet(0x2e, &(0x7f0000000200)={@broadcast, @broadcast, [{[], {0x8100, 0x3, 0x0, 0x4}}], {@arp={0x806, @ether_ipv4={0x1, 0x800, 0x6, 0x4, 0x8, @random="062ad6d2e479", @loopback, @random="d57f99982dbe", @local={0xac, 0x14, 0x0}}}}}) syz_emit_ethernet(0x4e, &(0x7f0000000000)={@remote, @broadcast, [{[{0x88a8, 0x1, 0x0, 0x4}], {0x8100, 0x1, 0x1, 0x3}}], {@ipv4={0x800, {{0xe, 0x4, 0x1, 0x26, 0x38, 0x65, 0x8, 0x9f, 0x32, 0x0, @loopback, @rand_addr=0x5, {[@generic={0x0, 0xa, "529896f3a50dfe03"}, @ssrr={0x89, 0xb, 0xf8, [@broadcast, @broadcast]}, @ssrr={0x89, 0xf, 0x81, [@rand_addr=0x4, @empty, @remote={0xac, 0x14, 0x0}]}]}}}}}}) syz_execute_func(&(0x7f0000000080)="c422d904ffc4e1bf10f3c483ad40cdc1f330c9c4a1c9d5742b21c401d5695f52c461addfe2462c7cc421ed6123f3446e") syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x0) syz_open_pts() csource_test.go:119: 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 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); if (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 BITMASK(bf_off,bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type,htobe,addr,val,bf_off,bf_len) *(type*)(addr) = htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } #define __syscall syscall 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; int collide = 0; again: for (call = 0; call < 14; 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 (collide && (call % 2) == 0) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); if (!collide) { collide = 1; goto again; } } 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "/dev/null\000", 10); inject_fault(1); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000000ul, 0x80ul, 0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000040, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 32); *(uint32_t*)0x20000060 = 0; *(uint32_t*)0x20000064 = 0xffff; *(uint32_t*)0x20000068 = 2; *(uint32_t*)0x2000006c = 1; *(uint32_t*)0x20000070 = 8; *(uint32_t*)0x20000074 = 5; *(uint32_t*)0x20000078 = 0x80000001; *(uint32_t*)0x2000007c = 0; *(uint32_t*)0x20000080 = 2; *(uint64_t*)0x20000088 = 9; *(uint64_t*)0x20000090 = 0x8000; syscall(SYS_ioctl, r[0], 0x8058574dul, 0x20000040ul); break; case 2: syscall(SYS_fsync, r[0]); break; case 3: *(uint32_t*)0x200000c0 = 0x200; *(uint32_t*)0x200000c4 = 8; *(uint32_t*)0x200000c8 = 7; *(uint32_t*)0x200000cc = -1; syscall(SYS_ioctl, -1, 0x80105703ul, 0x200000c0ul); break; case 4: memcpy((void*)0x20000100, "/dev/pf\000", 8); res = syscall(SYS_openat, 0xffffffffffffff9cul, 0x20000100ul, 0x20ul, 0ul); if (res != -1) r[1] = res; break; case 5: *(uint32_t*)0x20000140 = 0x22; *(uint32_t*)0x20000144 = 3; *(uint32_t*)0x20000148 = -1; syscall(SYS_ioctl, r[1], 0x800c5709ul, 0x20000140ul); break; case 6: res = syscall(SYS_dup, r[1]); if (res != -1) r[2] = res; break; case 7: syscall(SYS_ioctl, r[2], 0x4004570ful, 0x20000180ul); break; case 8: *(uint32_t*)0x200001c0 = 0x200; *(uint32_t*)0x200001c4 = 0x10001; *(uint32_t*)0x200001c8 = 0x3ff; syscall(SYS_ioctl, r[0], 0x800c5712ul, 0x200001c0ul); break; case 9: memcpy((void*)0x20000080, "\xc4\x22\xd9\x04\xff\xc4\xe1\xbf\x10\xf3\xc4\x83\xad\x40\xcd\xc1\xf3\x30\xc9\xc4\xa1\xc9\xd5\x74\x2b\x21\xc4\x01\xd5\x69\x5f\x52\xc4\x61\xad\xdf\xe2\x46\x2c\x7c\xc4\x21\xed\x61\x23\xf3\x44\x6e", 48); syz_execute_func(0x20000080); break; case 10: syz_open_pts(); break; } } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); setup_fault(); use_temporary_dir(); do_sandbox_none(); return 0; } :347:4: error: misleading indentation; statement is not part of the previous 'if' [-Werror,-Wmisleading-indentation] kill_and_wait(pid, &status); ^ :345:3: note: previous statement is here if (current_time_ms() - start < 5000) ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor891608719 -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] --- FAIL: TestGenerate/openbsd/amd64/6 (4.00s) csource_test.go:116: --- FAIL: TestGenerate/openbsd/amd64/5 (4.22s) csource_test.go:116: --- FAIL: TestGenerate/openbsd/amd64/4 (4.68s) csource_test.go:116: --- FAIL: TestGenerate/openbsd/amd64/1 (4.30s) csource_test.go:116: --- FAIL: TestGenerate/openbsd/amd64/3 (4.61s) csource_test.go:116: FAIL FAIL github.com/google/syzkaller/pkg/csource 90.586s ok github.com/google/syzkaller/pkg/db (cached) ? github.com/google/syzkaller/pkg/debugtracer [no test files] ok github.com/google/syzkaller/pkg/email (cached) ? 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] ok github.com/google/syzkaller/pkg/host (cached) ? github.com/google/syzkaller/pkg/html [no test files] ok github.com/google/syzkaller/pkg/ifuzz (cached) ? github.com/google/syzkaller/pkg/ifuzz/iset [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc/generated [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86 [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/gen [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/generated [no test files] ok github.com/google/syzkaller/pkg/instance 4.283s ok github.com/google/syzkaller/pkg/ipc (cached) ? github.com/google/syzkaller/pkg/ipc/ipcconfig [no test files] ? github.com/google/syzkaller/pkg/kcidb [no test files] ok github.com/google/syzkaller/pkg/kconfig 0.717s ok github.com/google/syzkaller/pkg/kd (cached) ok github.com/google/syzkaller/pkg/log (cached) ok github.com/google/syzkaller/pkg/mgrconfig 4.297s ok github.com/google/syzkaller/pkg/osutil (cached) ok github.com/google/syzkaller/pkg/report 31.646s ok github.com/google/syzkaller/pkg/repro 5.958s ? github.com/google/syzkaller/pkg/rpctype [no test files] ok github.com/google/syzkaller/pkg/runtest (cached) ok github.com/google/syzkaller/pkg/serializer (cached) ? github.com/google/syzkaller/pkg/signal [no test files] ok github.com/google/syzkaller/pkg/symbolizer (cached) ok github.com/google/syzkaller/pkg/tool (cached) ok github.com/google/syzkaller/pkg/vcs (cached) ok github.com/google/syzkaller/prog (cached) ok github.com/google/syzkaller/prog/test (cached) ? github.com/google/syzkaller/sys [no test files] ? github.com/google/syzkaller/sys/akaros [no test files] ? github.com/google/syzkaller/sys/akaros/gen [no test files] ? github.com/google/syzkaller/sys/darwin [no test files] ? github.com/google/syzkaller/sys/darwin/gen [no test files] ? github.com/google/syzkaller/sys/freebsd [no test files] ? github.com/google/syzkaller/sys/freebsd/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia [no test files] ? github.com/google/syzkaller/sys/fuchsia/fidlgen [no test files] ? github.com/google/syzkaller/sys/fuchsia/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia/layout [no test files] ok github.com/google/syzkaller/sys/linux (cached) ? github.com/google/syzkaller/sys/linux/gen [no test files] ? github.com/google/syzkaller/sys/netbsd [no test files] ? github.com/google/syzkaller/sys/netbsd/gen [no test files] ok github.com/google/syzkaller/sys/openbsd (cached) ? 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] ok github.com/google/syzkaller/syz-ci 5.693s ok github.com/google/syzkaller/syz-fuzzer (cached) ok github.com/google/syzkaller/syz-hub (cached) ok github.com/google/syzkaller/syz-hub/state (cached) ok github.com/google/syzkaller/syz-manager 20.126s ? github.com/google/syzkaller/syz-runner [no test files] ok github.com/google/syzkaller/syz-verifier 3.056s ? 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-fmt [no test files] ? github.com/google/syzkaller/tools/syz-hubtool [no test files] ? github.com/google/syzkaller/tools/syz-kcidb [no test files] ok github.com/google/syzkaller/tools/syz-kconf (cached) ok github.com/google/syzkaller/tools/syz-linter (cached) ? 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-reporter [no test files] ? github.com/google/syzkaller/tools/syz-repro [no test files] ? github.com/google/syzkaller/tools/syz-reprolist [no test files] ? github.com/google/syzkaller/tools/syz-runtest [no test files] ? github.com/google/syzkaller/tools/syz-showprio [no test files] ? github.com/google/syzkaller/tools/syz-stress [no test files] ? github.com/google/syzkaller/tools/syz-symbolize [no test files] ? github.com/google/syzkaller/tools/syz-testbuild [no test files] ? github.com/google/syzkaller/tools/syz-trace2syz [no test files] ok github.com/google/syzkaller/tools/syz-trace2syz/parser (cached) ok github.com/google/syzkaller/tools/syz-trace2syz/proggen (cached) ? github.com/google/syzkaller/tools/syz-tty [no test files] ? github.com/google/syzkaller/tools/syz-upgrade [no test files] ? github.com/google/syzkaller/tools/syz-usbgen [no test files] ok github.com/google/syzkaller/vm 14.673s ? github.com/google/syzkaller/vm/adb [no test files] ? github.com/google/syzkaller/vm/bhyve [no test files] ? github.com/google/syzkaller/vm/gce [no test files] ? github.com/google/syzkaller/vm/gvisor [no test files] ok github.com/google/syzkaller/vm/isolated 1.891s ? github.com/google/syzkaller/vm/kvm [no test files] ? github.com/google/syzkaller/vm/odroid [no test files] ? github.com/google/syzkaller/vm/qemu [no test files] ok github.com/google/syzkaller/vm/vmimpl 2.588s ? github.com/google/syzkaller/vm/vmm [no test files] ? github.com/google/syzkaller/vm/vmware [no test files] FAIL