? github.com/google/syzkaller/dashboard/api [no test files] ok github.com/google/syzkaller/dashboard/app 0.611s ok github.com/google/syzkaller/dashboard/dashapi (cached) ok github.com/google/syzkaller/executor 1.579s ok github.com/google/syzkaller/pkg/asset (cached) ok github.com/google/syzkaller/pkg/ast 1.477s ok github.com/google/syzkaller/pkg/auth (cached) ? github.com/google/syzkaller/pkg/debugtracer [no test files] ? github.com/google/syzkaller/pkg/gcs [no test files] ? github.com/google/syzkaller/pkg/hash [no test files] ? github.com/google/syzkaller/pkg/ifaceprobe [no test files] ? github.com/google/syzkaller/pkg/ifuzz/arm64/generated [no test files] ? github.com/google/syzkaller/pkg/ifuzz/iset [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc [no test files] ? github.com/google/syzkaller/pkg/ifuzz/powerpc/generated [no test files] ? github.com/google/syzkaller/pkg/ifuzz/arm64/gen [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86 [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/gen [no test files] ? github.com/google/syzkaller/pkg/ifuzz/x86/generated [no test files] ? github.com/google/syzkaller/pkg/kcidb [no test files] ? github.com/google/syzkaller/pkg/report/crash [no test files] ? github.com/google/syzkaller/pkg/rpcserver/mocks [no test files] ? github.com/google/syzkaller/pkg/rpctype [no test files] ? github.com/google/syzkaller/pkg/stat/syzbotstats [no test files] ? github.com/google/syzkaller/pkg/testutil [no test files] ? github.com/google/syzkaller/pkg/tools [no test files] ok github.com/google/syzkaller/pkg/bisect 175.290s ok github.com/google/syzkaller/pkg/bisect/minimize (cached) ok github.com/google/syzkaller/pkg/build 5.772s ok github.com/google/syzkaller/pkg/compiler 15.005s ok github.com/google/syzkaller/pkg/config (cached) ok github.com/google/syzkaller/pkg/corpus 1.574s ok github.com/google/syzkaller/pkg/cover 0.398s ok github.com/google/syzkaller/pkg/cover/backend 1.333s ok github.com/google/syzkaller/pkg/coveragedb (cached) ok github.com/google/syzkaller/pkg/covermerger (cached) --- FAIL: TestGenerate (13.85s) --- FAIL: TestGenerate/openbsd/amd64 (0.22s) testutil.go:35: seed=1733914331015041346 testutil.go:35: seed=1733914331229339601 --- FAIL: TestGenerate/openbsd/amd64/6 (1.24s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 500); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 15000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); use_temporary_dir(); do_sandbox_none(); return 0; } :393:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3074277729 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/12 (2.45s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { 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 (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); do_sandbox_none(); return 0; } :340:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1805060392 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/9 (2.72s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:-9223372036854775808 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); use_temporary_dir(); do_sandbox_none(); return 0; } :393:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1880058485 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/14 (3.16s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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)) { } fprintf(stderr, "### start\n"); int i, call, thread; for (call = 0; call < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); fprintf(stderr, "### call=0 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); fprintf(stderr, "### call=1 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 2: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); fprintf(stderr, "### call=2 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); fprintf(stderr, "### call=3 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); fprintf(stderr, "### call=4 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 5: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); fprintf(stderr, "### call=5 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 6: *(uint32_t*)0x20000240 = 8; res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); fprintf(stderr, "### call=6 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 7: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); fprintf(stderr, "### call=7 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 8: res = -1; errno = EFAULT; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); fprintf(stderr, "### call=8 errno=%u\n", (intptr_t)(int)res == -1 ? errno : 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); res = -1; errno = EFAULT; NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ fprintf(stderr, "### call=9 errno=%u\n", (intptr_t)(int)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) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); use_temporary_dir(); do_sandbox_none(); return 0; } :421:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3060873650 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/8 (3.12s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox:setuid SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int wait_for_loop(int pid) { if (pid < 0) exit(1); int status = 0; while (waitpid(-1, &status, WUNTRACED) != pid) { } return WEXITSTATUS(status); } static int do_sandbox_setuid(void) { int pid = fork(); if (pid != 0) return wait_for_loop(pid); sandbox_common(); char pwbuf[1024]; struct passwd *pw, pwres; if (getpwnam_r("nobody", &pwres, pwbuf, sizeof(pwbuf), &pw) != 0 || !pw) exit(1); if (setgroups(0, NULL)) exit(1); if (setgid(pw->pw_gid)) exit(1); if (setuid(pw->pw_uid)) exit(1); loop(); exit(1); } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); use_temporary_dir(); do_sandbox_setuid(); return 0; } :416:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3823634274 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/15 (3.27s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static unsigned long long procid; static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23 + procid*4; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); for (procid = 0; procid < 2; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; } :395:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor1924169638 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/5 (3.31s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static unsigned long long procid; static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23 + procid*4; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); for (procid = 0; procid < 4; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; } :395:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2458058434 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/7 (3.39s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:0 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); use_temporary_dir(); loop(); return 0; } :368:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor976568911 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/3 (2.85s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:10 Procs:0 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (; iter < 10; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); use_temporary_dir(); do_sandbox_none(); return 0; } :393:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor3227591454 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/4 (2.61s) csource_test.go:151: opts: {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}} program: r0 = dup(0xffffffffffffffff) (fail_nth: 1) utimensat(r0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x80, 0x3}, {0x3, 0xffffffff}}, 0x2) (async) ioctl$BIOCLOCK(r0, 0x20004276) (rerun: 4) r1 = socket$unix(0x1, 0x1, 0x0) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000000080)=@abs={0x1, 0x0, 0x3}, 0x8, &(0x7f0000000140)=[{&(0x7f00000000c0)="d4e66071ae355b039cb4cb28e7519c7e8e4103646e6af27371982fd34f096d66fb281bdf71e9b7b85dffa2183cdefd88a897c2017a5d938675cade8305e507f45d1017a6acb63a95e651897cc782e5a65dbd1976f27dc477cba19f8765f92fdf1e7d77f2751643794aac1754bd7c68fda2ebe3dc4e", 0x75}], 0x1, 0x0, 0x0, 0xc}, 0x401) ioctl$FIOGETOWN(r1, 0x4004667b, &(0x7f00000001c0)) getpeername$unix(r0, &(0x7f0000000200)=@abs, &(0x7f0000000240)=0x8) mmap(&(0x7f0000ffe000/0x1000)=nil, 0x1000, 0x4, 0x4010, r1, 0x7) ioctl$KDSETRAD(r0, 0x20004b43) mknod(&(0x7f0000000280)='./file0\x00', 0x0, 0x6) syz_emit_ethernet(0x225, &(0x7f0000000000)={@random="632f66af58f8", @broadcast, [], {@ipv6={0x86dd, {0xd, 0x6, "a77d82", 0x1ef, 0x6, 0x3, @mcast1, @local={0xfe, 0x80, '\x00', 0x0}, {[@routing={0x2f, 0x4, 0x0, 0xc, 0x0, [@ipv4={'\x00', '\xff\xff', @loopback}, @local={0xfe, 0x80, '\x00', 0x0}]}, @fragment={0x16, 0x0, 0x5, 0x0, 0x0, 0x5, 0x66}, @hopopts={0x3b, 0x12, '\x00', [@pad1, @padn={0x1, 0x3, [0x0, 0x0, 0x0]}, @generic={0xf, 0x7c, "ace965380ea6018228dc9322ebcc577a0a7bd150d628e25b37732d9d77fad88d67df9b9504d9dcad7b2235ff42d32dd485d4eb1423c37abd29cbf020e4883118762fd6a7acf30d94a81ece1d19d3509be7fa124b49288159cc32fd7a0a11333ae794b040c4c16f2447880fa559e1520ced0a24b691ee41021d43ced2"}, @padn={0x1, 0x7, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}, @pad1, @enc_lim={0x4, 0x1, 0x17}]}, @hopopts={0x33, 0xc, '\x00', [@jumbo={0xc2, 0x4, 0x8000}, @pad1, @generic={0xe, 0x46, "207cb0cccd0a83b605be3312080a4a76ea2d12900c9d1e208c73ce052ab7db3064fae05a6c3b1dceb7d920dd3a28caeba17d493b24044b756f374a3a6fe47440766a7f9f6793"}, @enc_lim={0x4, 0x1, 0x9}, @enc_lim={0x4, 0x1, 0x9}, @padn={0x1, 0x4, [0x0, 0x0, 0x0, 0x0]}, @ra={0x5, 0x2, 0xe}]}], @udp={{0x0, 0x1, 0x8}, {"8a1c359f9dbbfac1846addccda3f17294d5cbcebbf3f61f748e0ef55ec6a376ef103b60805f989d1c71fd941075628ddb482f6758712087fbfe9cb6bba7f7103622c188832e4af9d3d884fb8d83a85dc2bfec38b65f64c607ccdc032102f9970a3a90e4aa3dfec52a8c7598e171941dcf1c0586a6d255edd6e612fd5a9d5f29367e1cf08e0bfc7950e6f717d7ceb0d3c96d3b621c6b95add24a5c54519a21ff377d41f0123572a"}}}}}}}) syz_extract_tcp_res(&(0x7f0000000240), 0x2, 0x8) syz_open_pts() csource_test.go:152: failed to build program: // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void __attribute__((noinline)) remove_dir(const char* dir) { DIR* dp = opendir(dir); if (dp == NULL) { if (errno == EACCES) { if (rmdir(dir)) exit(1); return; } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } if (unlink(filename)) { exit(1); } } closedir(dp); while (rmdir(dir)) { exit(1); } } static int inject_fault(int nth) { return 0; } static const char* setup_fault() { return NULL; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { pthread_mutex_t mu; pthread_cond_t cv; int state; } event_t; static void event_init(event_t* ev) { if (pthread_mutex_init(&ev->mu, 0)) exit(1); if (pthread_cond_init(&ev->cv, 0)) exit(1); ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { pthread_mutex_lock(&ev->mu); if (ev->state) exit(1); ev->state = 1; pthread_mutex_unlock(&ev->mu); pthread_cond_broadcast(&ev->cv); } static void event_wait(event_t* ev) { pthread_mutex_lock(&ev->mu); while (!ev->state) pthread_cond_wait(&ev->cv, &ev->mu); pthread_mutex_unlock(&ev->mu); } static int event_isset(event_t* ev) { pthread_mutex_lock(&ev->mu); int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; pthread_mutex_lock(&ev->mu); for (;;) { if (ev->state) break; uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); now = current_time_ms(); if (now - start > timeout) break; } int res = ev->state; pthread_mutex_unlock(&ev->mu); return res; } #define CAST static uintptr_t syz_open_pts(void) { int master, slave; if (openpty(&master, &slave, NULL, NULL, NULL) == -1) return -1; if (dup2(master, master + 100) != -1) close(master); return slave; } static void sandbox_common() { struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 8 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 0; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); } static void loop(); static int do_sandbox_none(void) { sandbox_common(); loop(); return 0; } 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 < 11; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 1) break; event_timedwait(&th->done, 50); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: inject_fault(1); res = -1; res = ((intptr_t(*)(intptr_t))CAST(dup))(/*oldfd=*/-1); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); *(uint64_t*)0x20000040 = 0x80; *(uint64_t*)0x20000048 = 3; *(uint64_t*)0x20000050 = 3; *(uint64_t*)0x20000058 = 0xffffffff; ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(utimensat))(/*dir=*/r[0], /*pathname=*/0x20000000, /*times=*/0x20000040, /*flags=AT_SYMLINK_NOFOLLOW*/2); break; case 2: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); for (int i = 0; i < 4; i++) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004276, 0); } break; case 3: res = -1; res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=*/1, /*type=SOCK_STREAM*/1, /*proto=*/0); if (res != -1) r[1] = res; break; case 4: *(uint64_t*)0x20000180 = 0x20000080; *(uint16_t*)0x20000080 = 1; *(uint8_t*)0x20000082 = 0; *(uint32_t*)0x20000084 = 0x4e23; *(uint32_t*)0x20000188 = 8; *(uint64_t*)0x20000190 = 0x20000140; *(uint64_t*)0x20000140 = 0x200000c0; memcpy((void*)0x200000c0, "\xd4\xe6\x60\x71\xae\x35\x5b\x03\x9c\xb4\xcb\x28\xe7\x51\x9c\x7e\x8e\x41\x03\x64\x6e\x6a\xf2\x73\x71\x98\x2f\xd3\x4f\x09\x6d\x66\xfb\x28\x1b\xdf\x71\xe9\xb7\xb8\x5d\xff\xa2\x18\x3c\xde\xfd\x88\xa8\x97\xc2\x01\x7a\x5d\x93\x86\x75\xca\xde\x83\x05\xe5\x07\xf4\x5d\x10\x17\xa6\xac\xb6\x3a\x95\xe6\x51\x89\x7c\xc7\x82\xe5\xa6\x5d\xbd\x19\x76\xf2\x7d\xc4\x77\xcb\xa1\x9f\x87\x65\xf9\x2f\xdf\x1e\x7d\x77\xf2\x75\x16\x43\x79\x4a\xac\x17\x54\xbd\x7c\x68\xfd\xa2\xeb\xe3\xdc\x4e", 117); *(uint64_t*)0x20000148 = 0x75; *(uint64_t*)0x20000198 = 1; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint32_t*)0x200001b0 = 0xc; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(sendmsg))(/*fd=*/r[1], /*msg=*/0x20000180, /*f=MSG_NOSIGNAL|MSG_OOB*/0x401); break; case 5: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0x4004667b, /*arg=*/0x200001c0); break; case 6: *(uint32_t*)0x20000240 = 8; ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(getpeername))(/*fd=*/r[0], /*peer=*/0x20000200, /*peerlen=*/0x20000240); break; case 7: ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20ffe000, /*len=*/0x1000, /*prot=PROT_EXEC*/4, /*flags=MAP_STACK|MAP_FIXED*/0x4010, /*fd=*/r[1], /*offset=*/7); break; case 8: ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x20004b43, 0); break; case 9: memcpy((void*)0x20000280, "./file0\000", 8); NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ break; case 10: syz_open_pts(); break; } } int main(void) { ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup failed: %s\n", reason); use_temporary_dir(); do_sandbox_none(); return 0; } :393:3: error: call to undeclared function 'NONFAILING'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(mknod))(/*file=*/0x20000280, /*mode=*/0, /*dev=*/6)); /* major = 0, minor = 6 */ ^ 1 error generated. compiler invocation: c++ [-o /tmp/syz-executor2414830515 -DGOOS_openbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_openbsd=1 -x c - -m64 -static -lutil -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-array-bounds -Wno-unused-but-set-variable -Wno-unused-command-line-argument] --- FAIL: TestGenerate/openbsd/amd64/10 (2.20s) csource_test.go:149: --- FAIL: TestGenerate/openbsd/amd64/2 (2.23s) csource_test.go:149: --- FAIL: TestGenerate/openbsd/amd64/11 (4.59s) csource_test.go:149: --- FAIL: TestGenerate/openbsd/amd64/0 (6.11s) csource_test.go:149: --- FAIL: TestGenerate/openbsd/amd64/1 (4.72s) csource_test.go:149: FAIL FAIL github.com/google/syzkaller/pkg/csource 25.689s ok github.com/google/syzkaller/pkg/db (cached) ok github.com/google/syzkaller/pkg/email (cached) ok github.com/google/syzkaller/pkg/email/lore (cached) ok github.com/google/syzkaller/pkg/flatrpc (cached) ok github.com/google/syzkaller/pkg/fuzzer 11.459s ok github.com/google/syzkaller/pkg/fuzzer/queue (cached) ok github.com/google/syzkaller/pkg/gce (cached) ok github.com/google/syzkaller/pkg/html (cached) ok github.com/google/syzkaller/pkg/html/pages (cached) ok github.com/google/syzkaller/pkg/ifuzz (cached) ok github.com/google/syzkaller/pkg/ifuzz/arm64 (cached) ok github.com/google/syzkaller/pkg/image 8.912s ok github.com/google/syzkaller/pkg/instance 13.913s ok github.com/google/syzkaller/pkg/kconfig (cached) ok github.com/google/syzkaller/pkg/kd (cached) ok github.com/google/syzkaller/pkg/log (cached) ok github.com/google/syzkaller/pkg/manager 11.226s ok github.com/google/syzkaller/pkg/mgrconfig 14.233s ok github.com/google/syzkaller/pkg/osutil (cached) ok github.com/google/syzkaller/pkg/report 22.336s ok github.com/google/syzkaller/pkg/repro 10.921s ok github.com/google/syzkaller/pkg/rpcserver 12.213s ok github.com/google/syzkaller/pkg/runtest 27.142s ok github.com/google/syzkaller/pkg/serializer (cached) ok github.com/google/syzkaller/pkg/signal (cached) ok github.com/google/syzkaller/pkg/stat (cached) ok github.com/google/syzkaller/pkg/stat/sample (cached) ok github.com/google/syzkaller/pkg/subsystem (cached) ok github.com/google/syzkaller/pkg/subsystem/linux (cached) ok github.com/google/syzkaller/pkg/subsystem/lists (cached) ok github.com/google/syzkaller/pkg/symbolizer (cached) ok github.com/google/syzkaller/pkg/tool (cached) ok github.com/google/syzkaller/pkg/validator (cached) ok github.com/google/syzkaller/pkg/vcs (cached) ok github.com/google/syzkaller/pkg/vminfo 22.505s ? github.com/google/syzkaller/sys [no test files] ? github.com/google/syzkaller/sys/darwin/gen [no test files] ? github.com/google/syzkaller/sys/darwin [no test files] ? github.com/google/syzkaller/sys/fuchsia [no test files] ? github.com/google/syzkaller/sys/freebsd/gen [no test files] ? github.com/google/syzkaller/sys/freebsd [no test files] ? github.com/google/syzkaller/sys/fuchsia/fidlgen [no test files] ? github.com/google/syzkaller/sys/fuchsia/gen [no test files] ? github.com/google/syzkaller/sys/fuchsia/layout [no test files] ? github.com/google/syzkaller/sys/linux/gen [no test files] ? github.com/google/syzkaller/sys/netbsd/gen [no test files] ? github.com/google/syzkaller/sys/openbsd/gen [no test files] ? github.com/google/syzkaller/sys/syz-extract [no test files] ? github.com/google/syzkaller/sys/syz-sysgen [no test files] ? github.com/google/syzkaller/sys/targets [no test files] ? github.com/google/syzkaller/sys/test [no test files] ? github.com/google/syzkaller/sys/test/gen [no test files] ? github.com/google/syzkaller/sys/trusty [no test files] ? github.com/google/syzkaller/sys/trusty/gen [no test files] ? github.com/google/syzkaller/sys/windows/gen [no test files] ? github.com/google/syzkaller/sys/windows [no test files] ? github.com/google/syzkaller/tools/arm64 [no test files] ? github.com/google/syzkaller/tools/syz-bisect [no test files] ? github.com/google/syzkaller/tools/syz-benchcmp [no test files] ? github.com/google/syzkaller/tools/syz-build [no test files] ? github.com/google/syzkaller/tools/syz-check [no test files] ? github.com/google/syzkaller/tools/syz-cover [no test files] ? github.com/google/syzkaller/tools/syz-covermerger [no test files] ? github.com/google/syzkaller/tools/syz-crush [no test files] ? github.com/google/syzkaller/tools/syz-db-export [no test files] ? github.com/google/syzkaller/tools/syz-execprog [no test files] ? github.com/google/syzkaller/tools/syz-fillreports [no test files] ? github.com/google/syzkaller/tools/syz-expand [no test files] ? github.com/google/syzkaller/tools/syz-fix-analyzer [no test files] ? github.com/google/syzkaller/tools/syz-fmt [no test files] ? github.com/google/syzkaller/tools/syz-gemini-seed [no test files] ? github.com/google/syzkaller/tools/syz-declextract [no test files] ? github.com/google/syzkaller/tools/syz-diff [no test files] ? github.com/google/syzkaller/tools/syz-hubtool [no test files] ? github.com/google/syzkaller/tools/syz-kcidb [no test files] ? github.com/google/syzkaller/tools/syz-lore [no test files] ? github.com/google/syzkaller/tools/syz-minconfig [no test files] ? github.com/google/syzkaller/tools/syz-make [no test files] ? github.com/google/syzkaller/tools/syz-mutate [no test files] ? github.com/google/syzkaller/tools/syz-repro [no test files] ? github.com/google/syzkaller/tools/syz-reporter [no test files] ? github.com/google/syzkaller/tools/syz-query-subsystems [no test files] ? github.com/google/syzkaller/tools/syz-prog2c [no test files] ? github.com/google/syzkaller/tools/syz-showprio [no test files] ? github.com/google/syzkaller/tools/syz-symbolize [no test files] ? github.com/google/syzkaller/tools/syz-testbuild [no test files] ? github.com/google/syzkaller/tools/syz-trace2syz [no test files] ? github.com/google/syzkaller/tools/syz-upgrade [no test files] ? github.com/google/syzkaller/tools/syz-tty [no test files] ? github.com/google/syzkaller/tools/syz-usbgen [no test files] ? github.com/google/syzkaller/vm/bhyve [no test files] ? github.com/google/syzkaller/vm/cuttlefish [no test files] ? github.com/google/syzkaller/vm/adb [no test files] ? github.com/google/syzkaller/vm/gce [no test files] ? github.com/google/syzkaller/vm/gvisor [no test files] ? github.com/google/syzkaller/vm/proxyapp/mocks [no test files] ? github.com/google/syzkaller/vm/proxyapp/proxyrpc [no test files] ? github.com/google/syzkaller/vm/qemu [no test files] ? github.com/google/syzkaller/vm/starnix [no test files] ? github.com/google/syzkaller/vm/vmm [no test files] ? github.com/google/syzkaller/vm/vmware [no test files] ok github.com/google/syzkaller/prog 49.477s ok github.com/google/syzkaller/prog/test (cached) ok github.com/google/syzkaller/sys/linux 1.540s ok github.com/google/syzkaller/sys/netbsd (cached) ok github.com/google/syzkaller/sys/openbsd (cached) ok github.com/google/syzkaller/syz-ci 23.876s ok github.com/google/syzkaller/syz-hub (cached) ok github.com/google/syzkaller/syz-hub/state (cached) ok github.com/google/syzkaller/syz-manager 4.051s ok github.com/google/syzkaller/tools/syz-db 1.866s ok github.com/google/syzkaller/tools/syz-kconf (cached) ok github.com/google/syzkaller/tools/syz-linter (cached) ok github.com/google/syzkaller/tools/syz-testbed 5.542s ok github.com/google/syzkaller/tools/syz-trace2syz/parser 0.367s ok github.com/google/syzkaller/tools/syz-trace2syz/proggen 1.999s ok github.com/google/syzkaller/vm 13.843s ok github.com/google/syzkaller/vm/dispatcher (cached) ok github.com/google/syzkaller/vm/isolated 2.930s ok github.com/google/syzkaller/vm/proxyapp 5.399s ok github.com/google/syzkaller/vm/vmimpl 2.888s FAIL