// https://syzkaller.appspot.com/bug?id=f8d4f67fe01399591448f63f31ffe3bc49116c06 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include __attribute__((noreturn)) static void doexit(int status) { volatile unsigned i; syscall(__NR_exit_group, status); for (i = 0;; i++) { } } #include #include #include #include #include #include #include const int kFailStatus = 67; const int kRetryStatus = 69; static void fail(const char* msg, ...) { int e = errno; va_list args; va_start(args, msg); vfprintf(stderr, msg, args); va_end(args); fprintf(stderr, " (errno %d)\n", e); doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus); } static void use_temporary_dir() { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) fail("failed to mkdtemp"); if (chmod(tmpdir, 0777)) fail("failed to chmod"); if (chdir(tmpdir)) fail("failed to chdir"); } static void test(); void loop() { while (1) { test(); } } long r[189]; void* thr(void* arg) { switch ((long)arg) { case 0: r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); break; case 1: r[1] = syscall(__NR_socket, 0x26ul, 0x5ul, 0x0ul); break; case 2: *(uint16_t*)0x20939fa8 = (uint16_t)0x26; memcpy((void*)0x20939faa, "\x61\x65\x61\x64\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 14); *(uint32_t*)0x20939fb8 = (uint32_t)0x0; *(uint32_t*)0x20939fbc = (uint32_t)0x0; memcpy((void*)0x20939fc0, "\x72\x66\x63\x34\x35\x34\x33\x28\x67\x63\x6d\x28\x61\x65" "\x73\x29\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", 64); r[7] = syscall(__NR_bind, r[1], 0x20939fa8ul, 0x58ul); break; case 3: memcpy((void*)0x20890fec, "\x79\x73\x39\x76\xd8\xc3\x0a\x4a\xea\xd9" "\x60\x10\xbe\x13\xcf\xe6\x27\x85\xce" "\x10", 20); r[9] = syscall(__NR_setsockopt, r[1], 0x117ul, 0x1ul, 0x20890fecul, 0x14ul); break; case 4: r[10] = syscall(__NR_accept, r[1], 0x0ul, 0x0ul); break; case 5: *(uint64_t*)0x20e5b000 = (uint64_t)0x0; *(uint32_t*)0x20e5b008 = (uint32_t)0x0; *(uint64_t*)0x20e5b010 = (uint64_t)0x20bbe000; *(uint64_t*)0x20e5b018 = (uint64_t)0x0; *(uint64_t*)0x20e5b020 = (uint64_t)0x203aa000; *(uint64_t*)0x20e5b028 = (uint64_t)0x18; *(uint32_t*)0x20e5b030 = (uint32_t)0x0; *(uint64_t*)0x203aa000 = (uint64_t)0x18; *(uint32_t*)0x203aa008 = (uint32_t)0x117; *(uint32_t*)0x203aa00c = (uint32_t)0x3; *(uint32_t*)0x203aa010 = (uint32_t)0x1; r[22] = syscall(__NR_sendmmsg, r[10], 0x20e5b000ul, 0x1ul, 0x0ul); break; case 6: *(uint64_t*)0x20fd9fc8 = (uint64_t)0x202fc000; *(uint32_t*)0x20fd9fd0 = (uint32_t)0x9; *(uint64_t*)0x20fd9fd8 = (uint64_t)0x20f7dfc0; *(uint64_t*)0x20fd9fe0 = (uint64_t)0x1; *(uint64_t*)0x20fd9fe8 = (uint64_t)0x20aa5000; *(uint64_t*)0x20fd9ff0 = (uint64_t)0x0; *(uint32_t*)0x20fd9ff8 = (uint32_t)0x4; *(uint64_t*)0x20f7dfc0 = (uint64_t)0x20249000; *(uint64_t*)0x20f7dfc8 = (uint64_t)0x480; r[32] = syscall(__NR_recvmsg, r[10], 0x20fd9fc8ul, 0x2002ul); break; case 7: *(uint64_t*)0x20e78000 = (uint64_t)0x0; *(uint32_t*)0x20e78008 = (uint32_t)0x0; *(uint64_t*)0x20e78010 = (uint64_t)0x205dbf80; *(uint64_t*)0x20e78018 = (uint64_t)0x0; *(uint64_t*)0x20e78020 = (uint64_t)0x20b7cfe8; *(uint64_t*)0x20e78028 = (uint64_t)0x18; *(uint32_t*)0x20e78030 = (uint32_t)0x4001; *(uint64_t*)0x20e78038 = (uint64_t)0x0; *(uint32_t*)0x20e78040 = (uint32_t)0x0; *(uint64_t*)0x20e78048 = (uint64_t)0x20d51ff0; *(uint64_t*)0x20e78050 = (uint64_t)0x1; *(uint64_t*)0x20e78058 = (uint64_t)0x200fd000; *(uint64_t*)0x20e78060 = (uint64_t)0xd8; *(uint32_t*)0x20e78068 = (uint32_t)0x4; *(uint64_t*)0x20e78070 = (uint64_t)0x0; *(uint32_t*)0x20e78078 = (uint32_t)0x0; *(uint64_t*)0x20e78080 = (uint64_t)0x20a9dfe0; *(uint64_t*)0x20e78088 = (uint64_t)0x2; *(uint64_t*)0x20e78090 = (uint64_t)0x200261eb; *(uint64_t*)0x20e78098 = (uint64_t)0x30; *(uint32_t*)0x20e780a0 = (uint32_t)0x20008040; *(uint64_t*)0x20e780a8 = (uint64_t)0x0; *(uint32_t*)0x20e780b0 = (uint32_t)0x0; *(uint64_t*)0x20e780b8 = (uint64_t)0x20de3000; *(uint64_t*)0x20e780c0 = (uint64_t)0x7; *(uint64_t*)0x20e780c8 = (uint64_t)0x20e4dfb8; *(uint64_t*)0x20e780d0 = (uint64_t)0x48; *(uint32_t*)0x20e780d8 = (uint32_t)0x20000000; *(uint64_t*)0x20e780e0 = (uint64_t)0x0; *(uint32_t*)0x20e780e8 = (uint32_t)0x0; *(uint64_t*)0x20e780f0 = (uint64_t)0x20358fd0; *(uint64_t*)0x20e780f8 = (uint64_t)0x3; *(uint64_t*)0x20e78100 = (uint64_t)0x20000000; *(uint64_t*)0x20e78108 = (uint64_t)0x0; *(uint32_t*)0x20e78110 = (uint32_t)0x8001; *(uint64_t*)0x20e78118 = (uint64_t)0x0; *(uint32_t*)0x20e78120 = (uint32_t)0x0; *(uint64_t*)0x20e78128 = (uint64_t)0x2069d000; *(uint64_t*)0x20e78130 = (uint64_t)0x3; *(uint64_t*)0x20e78138 = (uint64_t)0x20d34000; *(uint64_t*)0x20e78140 = (uint64_t)0x18; *(uint32_t*)0x20e78148 = (uint32_t)0x0; *(uint64_t*)0x20e78150 = (uint64_t)0x0; *(uint32_t*)0x20e78158 = (uint32_t)0x0; *(uint64_t*)0x20e78160 = (uint64_t)0x209bfff0; *(uint64_t*)0x20e78168 = (uint64_t)0x1; *(uint64_t*)0x20e78170 = (uint64_t)0x207ab000; *(uint64_t*)0x20e78178 = (uint64_t)0x30; *(uint32_t*)0x20e78180 = (uint32_t)0x8004; *(uint64_t*)0x20b7cfe8 = (uint64_t)0x18; *(uint32_t*)0x20b7cff0 = (uint32_t)0x117; *(uint32_t*)0x20b7cff4 = (uint32_t)0x4; *(uint32_t*)0x20b7cff8 = (uint32_t)0x0; *(uint64_t*)0x20d51ff0 = (uint64_t)0x2098af09; *(uint64_t*)0x20d51ff8 = (uint64_t)0x0; *(uint64_t*)0x200fd000 = (uint64_t)0x18; *(uint32_t*)0x200fd008 = (uint32_t)0x117; *(uint32_t*)0x200fd00c = (uint32_t)0x3; *(uint32_t*)0x200fd010 = (uint32_t)0x1; *(uint64_t*)0x200fd018 = (uint64_t)0x18; *(uint32_t*)0x200fd020 = (uint32_t)0x117; *(uint32_t*)0x200fd024 = (uint32_t)0x4; *(uint32_t*)0x200fd028 = (uint32_t)0x7; *(uint64_t*)0x200fd030 = (uint64_t)0x18; *(uint32_t*)0x200fd038 = (uint32_t)0x117; *(uint32_t*)0x200fd03c = (uint32_t)0x4; *(uint32_t*)0x200fd040 = (uint32_t)0x401; *(uint64_t*)0x200fd048 = (uint64_t)0x18; *(uint32_t*)0x200fd050 = (uint32_t)0x117; *(uint32_t*)0x200fd054 = (uint32_t)0x4; *(uint32_t*)0x200fd058 = (uint32_t)0x8; *(uint64_t*)0x200fd060 = (uint64_t)0x18; *(uint32_t*)0x200fd068 = (uint32_t)0x117; *(uint32_t*)0x200fd06c = (uint32_t)0x4; *(uint32_t*)0x200fd070 = (uint32_t)0x3; *(uint64_t*)0x200fd078 = (uint64_t)0x18; *(uint32_t*)0x200fd080 = (uint32_t)0x117; *(uint32_t*)0x200fd084 = (uint32_t)0x3; *(uint32_t*)0x200fd088 = (uint32_t)0x0; *(uint64_t*)0x200fd090 = (uint64_t)0x18; *(uint32_t*)0x200fd098 = (uint32_t)0x117; *(uint32_t*)0x200fd09c = (uint32_t)0x4; *(uint32_t*)0x200fd0a0 = (uint32_t)0x7f; *(uint64_t*)0x200fd0a8 = (uint64_t)0x18; *(uint32_t*)0x200fd0b0 = (uint32_t)0x117; *(uint32_t*)0x200fd0b4 = (uint32_t)0x4; *(uint32_t*)0x200fd0b8 = (uint32_t)0xffffffff; *(uint64_t*)0x200fd0c0 = (uint64_t)0x18; *(uint32_t*)0x200fd0c8 = (uint32_t)0x117; *(uint32_t*)0x200fd0cc = (uint32_t)0x3; *(uint32_t*)0x200fd0d0 = (uint32_t)0x1; *(uint64_t*)0x20a9dfe0 = (uint64_t)0x204b8000; *(uint64_t*)0x20a9dfe8 = (uint64_t)0x0; *(uint64_t*)0x20a9dff0 = (uint64_t)0x20d50000; *(uint64_t*)0x20a9dff8 = (uint64_t)0x0; *(uint64_t*)0x200261eb = (uint64_t)0x18; *(uint32_t*)0x200261f3 = (uint32_t)0x117; *(uint32_t*)0x200261f7 = (uint32_t)0x2; *(uint32_t*)0x200261fb = (uint32_t)0x0; *(uint64_t*)0x20026203 = (uint64_t)0x18; *(uint32_t*)0x2002620b = (uint32_t)0x117; *(uint32_t*)0x2002620f = (uint32_t)0x2; *(uint32_t*)0x20026213 = (uint32_t)0x0; *(uint64_t*)0x20de3000 = (uint64_t)0x20c47000; *(uint64_t*)0x20de3008 = (uint64_t)0x0; *(uint64_t*)0x20de3010 = (uint64_t)0x20f62f72; *(uint64_t*)0x20de3018 = (uint64_t)0x0; *(uint64_t*)0x20de3020 = (uint64_t)0x207b8f6f; *(uint64_t*)0x20de3028 = (uint64_t)0x0; *(uint64_t*)0x20de3030 = (uint64_t)0x206dc000; *(uint64_t*)0x20de3038 = (uint64_t)0x0; *(uint64_t*)0x20de3040 = (uint64_t)0x20936000; *(uint64_t*)0x20de3048 = (uint64_t)0x0; *(uint64_t*)0x20de3050 = (uint64_t)0x20de4f99; *(uint64_t*)0x20de3058 = (uint64_t)0x0; *(uint64_t*)0x20de3060 = (uint64_t)0x2097e000; *(uint64_t*)0x20de3068 = (uint64_t)0x0; *(uint64_t*)0x20e4dfb8 = (uint64_t)0x18; *(uint32_t*)0x20e4dfc0 = (uint32_t)0x117; *(uint32_t*)0x20e4dfc4 = (uint32_t)0x4; *(uint32_t*)0x20e4dfc8 = (uint32_t)0x7; *(uint64_t*)0x20e4dfd0 = (uint64_t)0x18; *(uint32_t*)0x20e4dfd8 = (uint32_t)0x117; *(uint32_t*)0x20e4dfdc = (uint32_t)0x4; *(uint32_t*)0x20e4dfe0 = (uint32_t)0x1fffe0000000; *(uint64_t*)0x20e4dfe8 = (uint64_t)0x18; *(uint32_t*)0x20e4dff0 = (uint32_t)0x117; *(uint32_t*)0x20e4dff4 = (uint32_t)0x3; *(uint32_t*)0x20e4dff8 = (uint32_t)0x1; *(uint64_t*)0x20358fd0 = (uint64_t)0x20ca7000; *(uint64_t*)0x20358fd8 = (uint64_t)0x0; *(uint64_t*)0x20358fe0 = (uint64_t)0x20d0ef7a; *(uint64_t*)0x20358fe8 = (uint64_t)0x0; *(uint64_t*)0x20358ff0 = (uint64_t)0x20319f36; *(uint64_t*)0x20358ff8 = (uint64_t)0x0; *(uint64_t*)0x2069d000 = (uint64_t)0x20023000; *(uint64_t*)0x2069d008 = (uint64_t)0x0; *(uint64_t*)0x2069d010 = (uint64_t)0x20f6c000; *(uint64_t*)0x2069d018 = (uint64_t)0x0; *(uint64_t*)0x2069d020 = (uint64_t)0x20a6a000; *(uint64_t*)0x2069d028 = (uint64_t)0x0; *(uint64_t*)0x20d34000 = (uint64_t)0x18; *(uint32_t*)0x20d34008 = (uint32_t)0x117; *(uint32_t*)0x20d3400c = (uint32_t)0x4; *(uint32_t*)0x20d34010 = (uint32_t)0x2; *(uint64_t*)0x209bfff0 = (uint64_t)0x20dcf000; *(uint64_t*)0x209bfff8 = (uint64_t)0x0; *(uint64_t*)0x207ab000 = (uint64_t)0x18; *(uint32_t*)0x207ab008 = (uint32_t)0x117; *(uint32_t*)0x207ab00c = (uint32_t)0x3; *(uint32_t*)0x207ab010 = (uint32_t)0x0; *(uint64_t*)0x207ab018 = (uint64_t)0x18; *(uint32_t*)0x207ab020 = (uint32_t)0x117; *(uint32_t*)0x207ab024 = (uint32_t)0x3; *(uint32_t*)0x207ab028 = (uint32_t)0x0; r[188] = syscall(__NR_sendmmsg, r[10], 0x20e78000ul, 0x7ul, 0x4ul); break; } return 0; } void test() { long i; pthread_t th[16]; memset(r, -1, sizeof(r)); for (i = 0; i < 8; i++) { pthread_create(&th[i], 0, thr, (void*)i); usleep(rand() % 10000); } usleep(rand() % 100000); } int main() { int i; for (i = 0; i < 8; i++) { if (fork() == 0) { use_temporary_dir(); loop(); return 0; } } sleep(1000000); return 0; }