// https://syzkaller.appspot.com/bug?id=744b8267432cf9dae35c55af4afd83bf43d8e5ec // autogenerated by syzkaller (http://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 #include #include #include #include #include #include #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 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); } #define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1) #define BITMASK_LEN_OFF(type, bf_off, bf_len) \ (type)(BITMASK_LEN(type, (bf_len)) << (bf_off)) #define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len) \ if ((bf_off) == 0 && (bf_len) == 0) { \ *(type*)(addr) = (type)(val); \ } else { \ type new_val = *(type*)(addr); \ new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len)); \ new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off); \ *(type*)(addr) = new_val; \ } struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i; for (i = 0; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += (uint16_t)data[length - 1]; while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } static uint64_t current_time_ms() { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) fail("clock_gettime failed"); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void vsnprintf_check(char* str, size_t size, const char* format, va_list args) { int rv; rv = vsnprintf(str, size, format, args); if (rv < 0) fail("tun: snprintf failed"); if ((size_t)rv >= size) fail("tun: string '%s...' doesn't fit into buffer", str); } static void snprintf_check(char* str, size_t size, const char* format, ...) { va_list args; va_start(args, format); vsnprintf_check(str, size, format, args); va_end(args); } #define COMMAND_MAX_LEN 128 #define PATH_PREFIX \ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin " #define PATH_PREFIX_LEN (sizeof(PATH_PREFIX) - 1) static void execute_command(bool panic, const char* format, ...) { va_list args; char command[PATH_PREFIX_LEN + COMMAND_MAX_LEN]; int rv; va_start(args, format); memcpy(command, PATH_PREFIX, PATH_PREFIX_LEN); vsnprintf_check(command + PATH_PREFIX_LEN, COMMAND_MAX_LEN, format, args); rv = system(command); if (panic && rv != 0) fail("tun: command \"%s\" failed with code %d", &command[0], rv); va_end(args); } static int tunfd = -1; static int tun_frags_enabled; #define SYZ_TUN_MAX_PACKET_SIZE 1000 #define TUN_IFACE "syz_tun" #define LOCAL_MAC "aa:aa:aa:aa:aa:aa" #define REMOTE_MAC "aa:aa:aa:aa:aa:bb" #define LOCAL_IPV4 "172.20.20.170" #define REMOTE_IPV4 "172.20.20.187" #define LOCAL_IPV6 "fe80::aa" #define REMOTE_IPV6 "fe80::bb" #define IFF_NAPI 0x0010 #define IFF_NAPI_FRAGS 0x0020 static void initialize_tun(void) { tunfd = open("/dev/net/tun", O_RDWR | O_NONBLOCK); if (tunfd == -1) { printf("tun: can't open /dev/net/tun: please enable CONFIG_TUN=y\n"); printf("otherwise fuzzing or reproducing might not work as intended\n"); return; } const int kTunFd = 252; if (dup2(tunfd, kTunFd) < 0) fail("dup2(tunfd, kTunFd) failed"); close(tunfd); tunfd = kTunFd; struct ifreq ifr; memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, TUN_IFACE, IFNAMSIZ); ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_NAPI | IFF_NAPI_FRAGS; if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) { ifr.ifr_flags = IFF_TAP | IFF_NO_PI; if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) fail("tun: ioctl(TUNSETIFF) failed"); } if (ioctl(tunfd, TUNGETIFF, (void*)&ifr) < 0) fail("tun: ioctl(TUNGETIFF) failed"); tun_frags_enabled = (ifr.ifr_flags & IFF_NAPI_FRAGS) != 0; execute_command(1, "sysctl -w net.ipv6.conf.%s.accept_dad=0", TUN_IFACE); execute_command(1, "sysctl -w net.ipv6.conf.%s.router_solicitations=0", TUN_IFACE); execute_command(1, "ip link set dev %s address %s", TUN_IFACE, LOCAL_MAC); execute_command(1, "ip addr add %s/24 dev %s", LOCAL_IPV4, TUN_IFACE); execute_command(1, "ip -6 addr add %s/120 dev %s", LOCAL_IPV6, TUN_IFACE); execute_command(1, "ip neigh add %s lladdr %s dev %s nud permanent", REMOTE_IPV4, REMOTE_MAC, TUN_IFACE); execute_command(1, "ip -6 neigh add %s lladdr %s dev %s nud permanent", REMOTE_IPV6, REMOTE_MAC, TUN_IFACE); execute_command(1, "ip link set dev %s up", TUN_IFACE); } #define DEV_IPV4 "172.20.20.%d" #define DEV_IPV6 "fe80::%02hx" #define DEV_MAC "aa:aa:aa:aa:aa:%02hx" static void initialize_netdevices(void) { unsigned i; const char* devtypes[] = {"ip6gretap", "bridge", "vcan", "bond", "veth"}; const char* devnames[] = {"lo", "sit0", "bridge0", "vcan0", "tunl0", "gre0", "gretap0", "ip_vti0", "ip6_vti0", "ip6tnl0", "ip6gre0", "ip6gretap0", "erspan0", "bond0", "veth0", "veth1"}; for (i = 0; i < sizeof(devtypes) / (sizeof(devtypes[0])); i++) execute_command(0, "ip link add dev %s0 type %s", devtypes[i], devtypes[i]); execute_command(0, "ip link add dev veth1 type veth"); for (i = 0; i < sizeof(devnames) / (sizeof(devnames[0])); i++) { char addr[32]; snprintf_check(addr, sizeof(addr), DEV_IPV4, i + 10); execute_command(0, "ip -4 addr add %s/24 dev %s", addr, devnames[i]); snprintf_check(addr, sizeof(addr), DEV_IPV6, i + 10); execute_command(0, "ip -6 addr add %s/120 dev %s", addr, devnames[i]); snprintf_check(addr, sizeof(addr), DEV_MAC, i + 10); execute_command(0, "ip link set dev %s address %s", devnames[i], addr); execute_command(0, "ip link set dev %s up", devnames[i]); } } static int read_tun(char* data, int size) { if (tunfd < 0) return -1; int rv = read(tunfd, data, size); if (rv < 0) { if (errno == EAGAIN) return -1; if (errno == EBADFD) return -1; fail("tun: read failed with %d", rv); } return rv; } #define MAX_FRAGS 4 struct vnet_fragmentation { uint32_t full; uint32_t count; uint32_t frags[MAX_FRAGS]; }; static uintptr_t syz_emit_ethernet(uintptr_t a0, uintptr_t a1, uintptr_t a2) { if (tunfd < 0) return (uintptr_t)-1; uint32_t length = a0; char* data = (char*)a1; struct vnet_fragmentation* frags = (struct vnet_fragmentation*)a2; struct iovec vecs[MAX_FRAGS + 1]; uint32_t nfrags = 0; if (!tun_frags_enabled || frags == NULL) { vecs[nfrags].iov_base = data; vecs[nfrags].iov_len = length; nfrags++; } else { bool full = true; uint32_t i, count = 0; full = frags->full; count = frags->count; if (count > MAX_FRAGS) count = MAX_FRAGS; for (i = 0; i < count && length != 0; i++) { uint32_t size = 0; size = frags->frags[i]; if (size > length) size = length; vecs[nfrags].iov_base = data; vecs[nfrags].iov_len = size; nfrags++; data += size; length -= size; } if (length != 0 && (full || nfrags == 0)) { vecs[nfrags].iov_base = data; vecs[nfrags].iov_len = length; nfrags++; } } return writev(tunfd, vecs, nfrags); } static void flush_tun() { char data[SYZ_TUN_MAX_PACKET_SIZE]; while (read_tun(&data[0], sizeof(data)) != -1) ; } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); setsid(); struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = 128 << 20; setrlimit(RLIMIT_AS, &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); #define CLONE_NEWCGROUP 0x02000000 if (unshare(CLONE_NEWNS)) { } if (unshare(CLONE_NEWIPC)) { } if (unshare(CLONE_NEWCGROUP)) { } if (unshare(CLONE_NEWUTS)) { } if (unshare(CLONE_SYSVSEM)) { } } static int do_sandbox_none(void) { if (unshare(CLONE_NEWPID)) { } int pid = fork(); if (pid < 0) fail("sandbox fork failed"); if (pid) return pid; sandbox_common(); if (unshare(CLONE_NEWNET)) { } initialize_tun(); initialize_netdevices(); loop(); doexit(1); } #define XT_TABLE_SIZE 1536 #define XT_MAX_ENTRIES 10 struct xt_counters { uint64_t pcnt, bcnt; }; struct ipt_getinfo { char name[32]; unsigned int valid_hooks; unsigned int hook_entry[5]; unsigned int underflow[5]; unsigned int num_entries; unsigned int size; }; struct ipt_get_entries { char name[32]; unsigned int size; void* entrytable[XT_TABLE_SIZE / sizeof(void*)]; }; struct ipt_replace { char name[32]; unsigned int valid_hooks; unsigned int num_entries; unsigned int size; unsigned int hook_entry[5]; unsigned int underflow[5]; unsigned int num_counters; struct xt_counters* counters; char entrytable[XT_TABLE_SIZE]; }; struct ipt_table_desc { const char* name; struct ipt_getinfo info; struct ipt_replace replace; }; static struct ipt_table_desc ipv4_tables[] = { {.name = "filter"}, {.name = "nat"}, {.name = "mangle"}, {.name = "raw"}, {.name = "security"}, }; static struct ipt_table_desc ipv6_tables[] = { {.name = "filter"}, {.name = "nat"}, {.name = "mangle"}, {.name = "raw"}, {.name = "security"}, }; #define IPT_BASE_CTL 64 #define IPT_SO_SET_REPLACE (IPT_BASE_CTL) #define IPT_SO_GET_INFO (IPT_BASE_CTL) #define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1) struct arpt_getinfo { char name[32]; unsigned int valid_hooks; unsigned int hook_entry[3]; unsigned int underflow[3]; unsigned int num_entries; unsigned int size; }; struct arpt_get_entries { char name[32]; unsigned int size; void* entrytable[XT_TABLE_SIZE / sizeof(void*)]; }; struct arpt_replace { char name[32]; unsigned int valid_hooks; unsigned int num_entries; unsigned int size; unsigned int hook_entry[3]; unsigned int underflow[3]; unsigned int num_counters; struct xt_counters* counters; char entrytable[XT_TABLE_SIZE]; }; struct arpt_table_desc { const char* name; struct arpt_getinfo info; struct arpt_replace replace; }; static struct arpt_table_desc arpt_tables[] = { {.name = "filter"}, }; #define ARPT_BASE_CTL 96 #define ARPT_SO_SET_REPLACE (ARPT_BASE_CTL) #define ARPT_SO_GET_INFO (ARPT_BASE_CTL) #define ARPT_SO_GET_ENTRIES (ARPT_BASE_CTL + 1) static void checkpoint_iptables(struct ipt_table_desc* tables, int num_tables, int family, int level) { struct ipt_get_entries entries; socklen_t optlen; int fd, i; fd = socket(family, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) fail("socket(%d, SOCK_STREAM, IPPROTO_TCP)", family); for (i = 0; i < num_tables; i++) { struct ipt_table_desc* table = &tables[i]; strcpy(table->info.name, table->name); strcpy(table->replace.name, table->name); optlen = sizeof(table->info); if (getsockopt(fd, level, IPT_SO_GET_INFO, &table->info, &optlen)) { switch (errno) { case EPERM: case ENOENT: case ENOPROTOOPT: continue; } fail("getsockopt(IPT_SO_GET_INFO)"); } if (table->info.size > sizeof(table->replace.entrytable)) fail("table size is too large: %u", table->info.size); if (table->info.num_entries > XT_MAX_ENTRIES) fail("too many counters: %u", table->info.num_entries); memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size; if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen)) fail("getsockopt(IPT_SO_GET_ENTRIES)"); table->replace.valid_hooks = table->info.valid_hooks; table->replace.num_entries = table->info.num_entries; table->replace.size = table->info.size; memcpy(table->replace.hook_entry, table->info.hook_entry, sizeof(table->replace.hook_entry)); memcpy(table->replace.underflow, table->info.underflow, sizeof(table->replace.underflow)); memcpy(table->replace.entrytable, entries.entrytable, table->info.size); } close(fd); } static void reset_iptables(struct ipt_table_desc* tables, int num_tables, int family, int level) { struct xt_counters counters[XT_MAX_ENTRIES]; struct ipt_get_entries entries; struct ipt_getinfo info; socklen_t optlen; int fd, i; fd = socket(family, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) fail("socket(%d, SOCK_STREAM, IPPROTO_TCP)", family); for (i = 0; i < num_tables; i++) { struct ipt_table_desc* table = &tables[i]; if (table->info.valid_hooks == 0) continue; memset(&info, 0, sizeof(info)); strcpy(info.name, table->name); optlen = sizeof(info); if (getsockopt(fd, level, IPT_SO_GET_INFO, &info, &optlen)) fail("getsockopt(IPT_SO_GET_INFO)"); if (memcmp(&table->info, &info, sizeof(table->info)) == 0) { memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size; if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen)) fail("getsockopt(IPT_SO_GET_ENTRIES)"); if (memcmp(table->replace.entrytable, entries.entrytable, table->info.size) == 0) continue; } table->replace.num_counters = info.num_entries; table->replace.counters = counters; optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) + table->replace.size; if (setsockopt(fd, level, IPT_SO_SET_REPLACE, &table->replace, optlen)) fail("setsockopt(IPT_SO_SET_REPLACE)"); } close(fd); } static void checkpoint_arptables(void) { struct arpt_get_entries entries; socklen_t optlen; unsigned i; int fd; fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)"); for (i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) { struct arpt_table_desc* table = &arpt_tables[i]; strcpy(table->info.name, table->name); strcpy(table->replace.name, table->name); optlen = sizeof(table->info); if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &table->info, &optlen)) { switch (errno) { case EPERM: case ENOENT: case ENOPROTOOPT: continue; } fail("getsockopt(ARPT_SO_GET_INFO)"); } if (table->info.size > sizeof(table->replace.entrytable)) fail("table size is too large: %u", table->info.size); if (table->info.num_entries > XT_MAX_ENTRIES) fail("too many counters: %u", table->info.num_entries); memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size; if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen)) fail("getsockopt(ARPT_SO_GET_ENTRIES)"); table->replace.valid_hooks = table->info.valid_hooks; table->replace.num_entries = table->info.num_entries; table->replace.size = table->info.size; memcpy(table->replace.hook_entry, table->info.hook_entry, sizeof(table->replace.hook_entry)); memcpy(table->replace.underflow, table->info.underflow, sizeof(table->replace.underflow)); memcpy(table->replace.entrytable, entries.entrytable, table->info.size); } close(fd); } static void reset_arptables() { struct xt_counters counters[XT_MAX_ENTRIES]; struct arpt_get_entries entries; struct arpt_getinfo info; socklen_t optlen; unsigned i; int fd; fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)"); for (i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) { struct arpt_table_desc* table = &arpt_tables[i]; if (table->info.valid_hooks == 0) continue; memset(&info, 0, sizeof(info)); strcpy(info.name, table->name); optlen = sizeof(info); if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &info, &optlen)) fail("getsockopt(ARPT_SO_GET_INFO)"); if (memcmp(&table->info, &info, sizeof(table->info)) == 0) { memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size; if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen)) fail("getsockopt(ARPT_SO_GET_ENTRIES)"); if (memcmp(table->replace.entrytable, entries.entrytable, table->info.size) == 0) continue; } table->replace.num_counters = info.num_entries; table->replace.counters = counters; optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) + table->replace.size; if (setsockopt(fd, SOL_IP, ARPT_SO_SET_REPLACE, &table->replace, optlen)) fail("setsockopt(ARPT_SO_SET_REPLACE)"); } close(fd); } #include #include struct ebt_table_desc { const char* name; struct ebt_replace replace; char entrytable[XT_TABLE_SIZE]; }; static struct ebt_table_desc ebt_tables[] = { {.name = "filter"}, {.name = "nat"}, {.name = "broute"}, }; static void checkpoint_ebtables(void) { socklen_t optlen; unsigned i; int fd; fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)"); for (i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) { struct ebt_table_desc* table = &ebt_tables[i]; strcpy(table->replace.name, table->name); optlen = sizeof(table->replace); if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_INFO, &table->replace, &optlen)) { switch (errno) { case EPERM: case ENOENT: case ENOPROTOOPT: continue; } fail("getsockopt(EBT_SO_GET_INIT_INFO)"); } if (table->replace.entries_size > sizeof(table->entrytable)) fail("table size is too large: %u", table->replace.entries_size); table->replace.num_counters = 0; table->replace.entries = table->entrytable; optlen = sizeof(table->replace) + table->replace.entries_size; if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_ENTRIES, &table->replace, &optlen)) fail("getsockopt(EBT_SO_GET_INIT_ENTRIES)"); } close(fd); } static void reset_ebtables() { struct ebt_replace replace; char entrytable[XT_TABLE_SIZE]; socklen_t optlen; unsigned i, j, h; int fd; fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)"); for (i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) { struct ebt_table_desc* table = &ebt_tables[i]; if (table->replace.valid_hooks == 0) continue; memset(&replace, 0, sizeof(replace)); strcpy(replace.name, table->name); optlen = sizeof(replace); if (getsockopt(fd, SOL_IP, EBT_SO_GET_INFO, &replace, &optlen)) fail("getsockopt(EBT_SO_GET_INFO)"); replace.num_counters = 0; for (h = 0; h < NF_BR_NUMHOOKS; h++) table->replace.hook_entry[h] = 0; if (memcmp(&table->replace, &replace, sizeof(table->replace)) == 0) { memset(&entrytable, 0, sizeof(entrytable)); replace.entries = entrytable; optlen = sizeof(replace) + replace.entries_size; if (getsockopt(fd, SOL_IP, EBT_SO_GET_ENTRIES, &replace, &optlen)) fail("getsockopt(EBT_SO_GET_ENTRIES)"); if (memcmp(table->entrytable, entrytable, replace.entries_size) == 0) continue; } for (j = 0, h = 0; h < NF_BR_NUMHOOKS; h++) { if (table->replace.valid_hooks & (1 << h)) { table->replace.hook_entry[h] = (struct ebt_entries*)table->entrytable + j; j++; } } optlen = sizeof(table->replace) + table->replace.entries_size; if (setsockopt(fd, SOL_IP, EBT_SO_SET_ENTRIES, &table->replace, optlen)) fail("setsockopt(EBT_SO_SET_ENTRIES)"); } close(fd); } static void checkpoint_net_namespace(void) { checkpoint_ebtables(); checkpoint_arptables(); checkpoint_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]), AF_INET, SOL_IP); checkpoint_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]), AF_INET6, SOL_IPV6); } static void reset_net_namespace(void) { reset_ebtables(); reset_arptables(); reset_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]), AF_INET, SOL_IP); reset_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]), AF_INET6, SOL_IPV6); } static void test(); void loop() { int iter; checkpoint_net_namespace(); for (iter = 0;; iter++) { int pid = fork(); if (pid < 0) fail("loop fork failed"); if (pid == 0) { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); flush_tun(); test(); doexit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { int res = waitpid(-1, &status, __WALL | WNOHANG); if (res == pid) break; usleep(1000); if (current_time_ms() - start > 5 * 1000) { kill(-pid, SIGKILL); kill(pid, SIGKILL); while (waitpid(-1, &status, __WALL) != pid) { } break; } } reset_net_namespace(); } } struct thread_t { int created, running, call; pthread_t th; }; 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 (;;) { while (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) syscall(SYS_futex, &th->running, FUTEX_WAIT, 0, 0); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); __atomic_store_n(&th->running, 0, __ATOMIC_RELEASE); syscall(SYS_futex, &th->running, FUTEX_WAKE); } return 0; } static void execute(int num_calls) { int call, thread; running = 0; for (call = 0; call < num_calls; call++) { for (thread = 0; thread < sizeof(threads) / sizeof(threads[0]); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); pthread_create(&th->th, &attr, thr, th); } if (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) { th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); __atomic_store_n(&th->running, 1, __ATOMIC_RELEASE); syscall(SYS_futex, &th->running, FUTEX_WAKE); struct timespec ts; ts.tv_sec = 0; ts.tv_nsec = 20 * 1000 * 1000; syscall(SYS_futex, &th->running, FUTEX_WAIT, 1, &ts); if (running) usleep((call == num_calls - 1) ? 10000 : 1000); break; } } } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; uint64_t procid; void execute_call(int call) { long res; switch (call) { case 0: *(uint32_t*)0x2001d000 = 2; *(uint32_t*)0x2001d004 = 0x196; *(uint8_t*)0x2001d008 = 0x66; *(uint8_t*)0x2001d009 = 1; *(uint8_t*)0x2001d00a = 0; *(uint8_t*)0x2001d00b = 0; *(uint32_t*)0x2001d00c = 0; *(uint64_t*)0x2001d010 = 0; *(uint64_t*)0x2001d018 = 0; *(uint64_t*)0x2001d020 = 0; STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 0, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 1, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 2, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 3, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 4, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, -1, 5, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 6, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 7, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 8, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 9, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 10, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 11, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 12, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 13, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 14, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 15, 2); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 17, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 18, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 19, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 20, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 21, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 22, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 23, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 24, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 25, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 26, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 27, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 28, 1); STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 29, 35); *(uint32_t*)0x2001d030 = 0; *(uint32_t*)0x2001d034 = 0; *(uint64_t*)0x2001d038 = 0x20000000; *(uint64_t*)0x2001d040 = 0; *(uint64_t*)0x2001d048 = 0; *(uint64_t*)0x2001d050 = 0; *(uint64_t*)0x2001d058 = 0; *(uint32_t*)0x2001d060 = 0; *(uint64_t*)0x2001d068 = 0; *(uint32_t*)0x2001d070 = 0; *(uint16_t*)0x2001d074 = 0; *(uint16_t*)0x2001d076 = 0; syscall(__NR_perf_event_open, 0x2001d000, 0, -1, -1, 0); break; case 1: res = syscall(__NR_socket, 0xa, 0x801, 0); if (res != -1) r[0] = res; break; case 2: memcpy((void*)0x20000000, "\x6e\x61\x74\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", 32); *(uint32_t*)0x20000020 = 0x1b; *(uint32_t*)0x20000024 = 5; *(uint32_t*)0x20000028 = 0x358; *(uint32_t*)0x2000002c = 0; *(uint32_t*)0x20000030 = 0x170; *(uint32_t*)0x20000034 = -1; *(uint32_t*)0x20000038 = 0x170; *(uint32_t*)0x2000003c = 0x218; *(uint32_t*)0x20000040 = 0x2c0; *(uint32_t*)0x20000044 = 0x2c0; *(uint32_t*)0x20000048 = -1; *(uint32_t*)0x2000004c = 0x2c0; *(uint32_t*)0x20000050 = 0x2c0; *(uint32_t*)0x20000054 = 5; *(uint64_t*)0x20000058 = 0x20002fb0; *(uint8_t*)0x20000060 = 0; *(uint8_t*)0x20000061 = 0; *(uint8_t*)0x20000062 = 0; *(uint8_t*)0x20000063 = 0; *(uint8_t*)0x20000064 = 0; *(uint8_t*)0x20000065 = 0; *(uint8_t*)0x20000066 = 0; *(uint8_t*)0x20000067 = 0; *(uint8_t*)0x20000068 = 0; *(uint8_t*)0x20000069 = 0; *(uint8_t*)0x2000006a = 0; *(uint8_t*)0x2000006b = 0; *(uint8_t*)0x2000006c = 0; *(uint8_t*)0x2000006d = 0; *(uint8_t*)0x2000006e = 0; *(uint8_t*)0x2000006f = 0; *(uint8_t*)0x20000070 = 0; *(uint8_t*)0x20000071 = 0; *(uint8_t*)0x20000072 = 0; *(uint8_t*)0x20000073 = 0; *(uint8_t*)0x20000074 = 0; *(uint8_t*)0x20000075 = 0; *(uint8_t*)0x20000076 = 0; *(uint8_t*)0x20000077 = 0; *(uint8_t*)0x20000078 = 0; *(uint8_t*)0x20000079 = 0; *(uint8_t*)0x2000007a = 0; *(uint8_t*)0x2000007b = 0; *(uint8_t*)0x2000007c = 0; *(uint8_t*)0x2000007d = 0; *(uint8_t*)0x2000007e = 0; *(uint8_t*)0x2000007f = 0; *(uint8_t*)0x20000080 = 0; *(uint8_t*)0x20000081 = 0; *(uint8_t*)0x20000082 = 0; *(uint8_t*)0x20000083 = 0; *(uint8_t*)0x20000084 = 0; *(uint8_t*)0x20000085 = 0; *(uint8_t*)0x20000086 = 0; *(uint8_t*)0x20000087 = 0; *(uint8_t*)0x20000088 = 0; *(uint8_t*)0x20000089 = 0; *(uint8_t*)0x2000008a = 0; *(uint8_t*)0x2000008b = 0; *(uint8_t*)0x2000008c = 0; *(uint8_t*)0x2000008d = 0; *(uint8_t*)0x2000008e = 0; *(uint8_t*)0x2000008f = 0; *(uint8_t*)0x20000090 = 0; *(uint8_t*)0x20000091 = 0; *(uint8_t*)0x20000092 = 0; *(uint8_t*)0x20000093 = 0; *(uint8_t*)0x20000094 = 0; *(uint8_t*)0x20000095 = 0; *(uint8_t*)0x20000096 = 0; *(uint8_t*)0x20000097 = 0; *(uint8_t*)0x20000098 = 0; *(uint8_t*)0x20000099 = 0; *(uint8_t*)0x2000009a = 0; *(uint8_t*)0x2000009b = 0; *(uint8_t*)0x2000009c = 0; *(uint8_t*)0x2000009d = 0; *(uint8_t*)0x2000009e = 0; *(uint8_t*)0x2000009f = 0; *(uint8_t*)0x200000a0 = 0; *(uint8_t*)0x200000a1 = 0; *(uint8_t*)0x200000a2 = 0; *(uint8_t*)0x200000a3 = 0; *(uint8_t*)0x200000a4 = 0; *(uint8_t*)0x200000a5 = 0; *(uint8_t*)0x200000a6 = 0; *(uint8_t*)0x200000a7 = 0; *(uint8_t*)0x200000a8 = 0; *(uint8_t*)0x200000a9 = 0; *(uint8_t*)0x200000aa = 0; *(uint8_t*)0x200000ab = 0; *(uint8_t*)0x200000ac = 0; *(uint8_t*)0x200000ad = 0; *(uint8_t*)0x200000ae = 0; *(uint8_t*)0x200000af = 0; *(uint8_t*)0x200000b0 = 0; *(uint8_t*)0x200000b1 = 0; *(uint8_t*)0x200000b2 = 0; *(uint8_t*)0x200000b3 = 0; *(uint32_t*)0x200000b4 = 0; *(uint16_t*)0x200000b8 = 0x90; *(uint16_t*)0x200000ba = 0xc8; *(uint32_t*)0x200000bc = 0; *(uint64_t*)0x200000c0 = 0; *(uint64_t*)0x200000c8 = 0; *(uint16_t*)0x200000d0 = 0x20; memcpy((void*)0x200000d2, "\x73\x6f\x63\x6b\x65\x74\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00", 29); *(uint8_t*)0x200000ef = 0; *(uint16_t*)0x200000f0 = 0x38; memcpy((void*)0x200000f2, "\x44\x4e\x41\x54\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", 29); *(uint8_t*)0x2000010f = 0; *(uint32_t*)0x20000110 = 1; *(uint32_t*)0x20000114 = 0; *(uint32_t*)0x20000118 = htobe32(0); *(uint8_t*)0x2000011c = 0xac; *(uint8_t*)0x2000011d = 0x14; *(uint8_t*)0x2000011e = -1; *(uint8_t*)0x2000011f = 0xbb; *(uint16_t*)0x20000120 = htobe16(0); *(uint16_t*)0x20000122 = htobe16(0); *(uint8_t*)0x20000128 = 0; *(uint8_t*)0x20000129 = 0; *(uint8_t*)0x2000012a = 0; *(uint8_t*)0x2000012b = 0; *(uint8_t*)0x2000012c = 0; *(uint8_t*)0x2000012d = 0; *(uint8_t*)0x2000012e = 0; *(uint8_t*)0x2000012f = 0; *(uint8_t*)0x20000130 = 0; *(uint8_t*)0x20000131 = 0; *(uint8_t*)0x20000132 = 0; *(uint8_t*)0x20000133 = 0; *(uint8_t*)0x20000134 = 0; *(uint8_t*)0x20000135 = 0; *(uint8_t*)0x20000136 = 0; *(uint8_t*)0x20000137 = 0; *(uint8_t*)0x20000138 = 0; *(uint8_t*)0x20000139 = 0; *(uint8_t*)0x2000013a = 0; *(uint8_t*)0x2000013b = 0; *(uint8_t*)0x2000013c = 0; *(uint8_t*)0x2000013d = 0; *(uint8_t*)0x2000013e = 0; *(uint8_t*)0x2000013f = 0; *(uint8_t*)0x20000140 = 0; *(uint8_t*)0x20000141 = 0; *(uint8_t*)0x20000142 = 0; *(uint8_t*)0x20000143 = 0; *(uint8_t*)0x20000144 = 0; *(uint8_t*)0x20000145 = 0; *(uint8_t*)0x20000146 = 0; *(uint8_t*)0x20000147 = 0; *(uint8_t*)0x20000148 = 0; *(uint8_t*)0x20000149 = 0; *(uint8_t*)0x2000014a = 0; *(uint8_t*)0x2000014b = 0; *(uint8_t*)0x2000014c = 0; *(uint8_t*)0x2000014d = 0; *(uint8_t*)0x2000014e = 0; *(uint8_t*)0x2000014f = 0; *(uint8_t*)0x20000150 = 0; *(uint8_t*)0x20000151 = 0; *(uint8_t*)0x20000152 = 0; *(uint8_t*)0x20000153 = 0; *(uint8_t*)0x20000154 = 0; *(uint8_t*)0x20000155 = 0; *(uint8_t*)0x20000156 = 0; *(uint8_t*)0x20000157 = 0; *(uint8_t*)0x20000158 = 0; *(uint8_t*)0x20000159 = 0; *(uint8_t*)0x2000015a = 0; *(uint8_t*)0x2000015b = 0; *(uint8_t*)0x2000015c = 0; *(uint8_t*)0x2000015d = 0; *(uint8_t*)0x2000015e = 0; *(uint8_t*)0x2000015f = 0; *(uint8_t*)0x20000160 = 0; *(uint8_t*)0x20000161 = 0; *(uint8_t*)0x20000162 = 0; *(uint8_t*)0x20000163 = 0; *(uint8_t*)0x20000164 = 0; *(uint8_t*)0x20000165 = 0; *(uint8_t*)0x20000166 = 0; *(uint8_t*)0x20000167 = 0; *(uint8_t*)0x20000168 = 0; *(uint8_t*)0x20000169 = 0; *(uint8_t*)0x2000016a = 0; *(uint8_t*)0x2000016b = 0; *(uint8_t*)0x2000016c = 0; *(uint8_t*)0x2000016d = 0; *(uint8_t*)0x2000016e = 0; *(uint8_t*)0x2000016f = 0; *(uint8_t*)0x20000170 = 0; *(uint8_t*)0x20000171 = 0; *(uint8_t*)0x20000172 = 0; *(uint8_t*)0x20000173 = 0; *(uint8_t*)0x20000174 = 0; *(uint8_t*)0x20000175 = 0; *(uint8_t*)0x20000176 = 0; *(uint8_t*)0x20000177 = 0; *(uint8_t*)0x20000178 = 0; *(uint8_t*)0x20000179 = 0; *(uint8_t*)0x2000017a = 0; *(uint8_t*)0x2000017b = 0; *(uint32_t*)0x2000017c = 0; *(uint16_t*)0x20000180 = 0x70; *(uint16_t*)0x20000182 = 0xa8; *(uint32_t*)0x20000184 = 0; *(uint64_t*)0x20000188 = 0; *(uint64_t*)0x20000190 = 0; *(uint16_t*)0x20000198 = 0x38; memcpy((void*)0x2000019a, "\x52\x45\x44\x49\x52\x45\x43\x54\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00", 29); *(uint8_t*)0x200001b7 = 0; *(uint32_t*)0x200001b8 = 1; *(uint32_t*)0x200001bc = 0; *(uint8_t*)0x200001c0 = 0xac; *(uint8_t*)0x200001c1 = 0x14; *(uint8_t*)0x200001c2 = -1; *(uint8_t*)0x200001c3 = 0xbb; *(uint32_t*)0x200001c4 = htobe32(0xe0000001); *(uint16_t*)0x200001c8 = htobe16(0); *(uint16_t*)0x200001ca = 0; *(uint8_t*)0x200001d0 = 0; *(uint8_t*)0x200001d1 = 0; *(uint8_t*)0x200001d2 = 0; *(uint8_t*)0x200001d3 = 0; *(uint8_t*)0x200001d4 = 0; *(uint8_t*)0x200001d5 = 0; *(uint8_t*)0x200001d6 = 0; *(uint8_t*)0x200001d7 = 0; *(uint8_t*)0x200001d8 = 0; *(uint8_t*)0x200001d9 = 0; *(uint8_t*)0x200001da = 0; *(uint8_t*)0x200001db = 0; *(uint8_t*)0x200001dc = 0; *(uint8_t*)0x200001dd = 0; *(uint8_t*)0x200001de = 0; *(uint8_t*)0x200001df = 0; *(uint8_t*)0x200001e0 = 0; *(uint8_t*)0x200001e1 = 0; *(uint8_t*)0x200001e2 = 0; *(uint8_t*)0x200001e3 = 0; *(uint8_t*)0x200001e4 = 0; *(uint8_t*)0x200001e5 = 0; *(uint8_t*)0x200001e6 = 0; *(uint8_t*)0x200001e7 = 0; *(uint8_t*)0x200001e8 = 0; *(uint8_t*)0x200001e9 = 0; *(uint8_t*)0x200001ea = 0; *(uint8_t*)0x200001eb = 0; *(uint8_t*)0x200001ec = 0; *(uint8_t*)0x200001ed = 0; *(uint8_t*)0x200001ee = 0; *(uint8_t*)0x200001ef = 0; *(uint8_t*)0x200001f0 = 0; *(uint8_t*)0x200001f1 = 0; *(uint8_t*)0x200001f2 = 0; *(uint8_t*)0x200001f3 = 0; *(uint8_t*)0x200001f4 = 0; *(uint8_t*)0x200001f5 = 0; *(uint8_t*)0x200001f6 = 0; *(uint8_t*)0x200001f7 = 0; *(uint8_t*)0x200001f8 = 0; *(uint8_t*)0x200001f9 = 0; *(uint8_t*)0x200001fa = 0; *(uint8_t*)0x200001fb = 0; *(uint8_t*)0x200001fc = 0; *(uint8_t*)0x200001fd = 0; *(uint8_t*)0x200001fe = 0; *(uint8_t*)0x200001ff = 0; *(uint8_t*)0x20000200 = 0; *(uint8_t*)0x20000201 = 0; *(uint8_t*)0x20000202 = 0; *(uint8_t*)0x20000203 = 0; *(uint8_t*)0x20000204 = 0; *(uint8_t*)0x20000205 = 0; *(uint8_t*)0x20000206 = 0; *(uint8_t*)0x20000207 = 0; *(uint8_t*)0x20000208 = 0; *(uint8_t*)0x20000209 = 0; *(uint8_t*)0x2000020a = 0; *(uint8_t*)0x2000020b = 0; *(uint8_t*)0x2000020c = 0; *(uint8_t*)0x2000020d = 0; *(uint8_t*)0x2000020e = 0; *(uint8_t*)0x2000020f = 0; *(uint8_t*)0x20000210 = 0; *(uint8_t*)0x20000211 = 0; *(uint8_t*)0x20000212 = 0; *(uint8_t*)0x20000213 = 0; *(uint8_t*)0x20000214 = 0; *(uint8_t*)0x20000215 = 0; *(uint8_t*)0x20000216 = 0; *(uint8_t*)0x20000217 = 0; *(uint8_t*)0x20000218 = 0; *(uint8_t*)0x20000219 = 0; *(uint8_t*)0x2000021a = 0; *(uint8_t*)0x2000021b = 0; *(uint8_t*)0x2000021c = 0; *(uint8_t*)0x2000021d = 0; *(uint8_t*)0x2000021e = 0; *(uint8_t*)0x2000021f = 0; *(uint8_t*)0x20000220 = 0; *(uint8_t*)0x20000221 = 0; *(uint8_t*)0x20000222 = 0; *(uint8_t*)0x20000223 = 0; *(uint32_t*)0x20000224 = 0; *(uint16_t*)0x20000228 = 0x70; *(uint16_t*)0x2000022a = 0xa8; *(uint32_t*)0x2000022c = 0; *(uint64_t*)0x20000230 = 0; *(uint64_t*)0x20000238 = 0; *(uint16_t*)0x20000240 = 0x38; memcpy((void*)0x20000242, "\x4e\x45\x54\x4d\x41\x50\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00", 29); *(uint8_t*)0x2000025f = 0; *(uint32_t*)0x20000260 = 1; *(uint32_t*)0x20000264 = 9; *(uint32_t*)0x20000268 = htobe32(0xe0000002); *(uint8_t*)0x2000026c = 0xac; *(uint8_t*)0x2000026d = 0x14; *(uint8_t*)0x2000026e = -1; *(uint8_t*)0x2000026f = 0xaa; *(uint16_t*)0x20000270 = htobe16(0); *(uint16_t*)0x20000272 = htobe16(0); *(uint8_t*)0x20000278 = 0; *(uint8_t*)0x20000279 = 0; *(uint8_t*)0x2000027a = 0; *(uint8_t*)0x2000027b = 0; *(uint8_t*)0x2000027c = 0; *(uint8_t*)0x2000027d = 0; *(uint8_t*)0x2000027e = 0; *(uint8_t*)0x2000027f = 0; *(uint8_t*)0x20000280 = 0; *(uint8_t*)0x20000281 = 0; *(uint8_t*)0x20000282 = 0; *(uint8_t*)0x20000283 = 0; *(uint8_t*)0x20000284 = 0; *(uint8_t*)0x20000285 = 0; *(uint8_t*)0x20000286 = 0; *(uint8_t*)0x20000287 = 0; *(uint8_t*)0x20000288 = 0; *(uint8_t*)0x20000289 = 0; *(uint8_t*)0x2000028a = 0; *(uint8_t*)0x2000028b = 0; *(uint8_t*)0x2000028c = 0; *(uint8_t*)0x2000028d = 0; *(uint8_t*)0x2000028e = 0; *(uint8_t*)0x2000028f = 0; *(uint8_t*)0x20000290 = 0; *(uint8_t*)0x20000291 = 0; *(uint8_t*)0x20000292 = 0; *(uint8_t*)0x20000293 = 0; *(uint8_t*)0x20000294 = 0; *(uint8_t*)0x20000295 = 0; *(uint8_t*)0x20000296 = 0; *(uint8_t*)0x20000297 = 0; *(uint8_t*)0x20000298 = 0; *(uint8_t*)0x20000299 = 0; *(uint8_t*)0x2000029a = 0; *(uint8_t*)0x2000029b = 0; *(uint8_t*)0x2000029c = 0; *(uint8_t*)0x2000029d = 0; *(uint8_t*)0x2000029e = 0; *(uint8_t*)0x2000029f = 0; *(uint8_t*)0x200002a0 = 0; *(uint8_t*)0x200002a1 = 0; *(uint8_t*)0x200002a2 = 0; *(uint8_t*)0x200002a3 = 0; *(uint8_t*)0x200002a4 = 0; *(uint8_t*)0x200002a5 = 0; *(uint8_t*)0x200002a6 = 0; *(uint8_t*)0x200002a7 = 0; *(uint8_t*)0x200002a8 = 0; *(uint8_t*)0x200002a9 = 0; *(uint8_t*)0x200002aa = 0; *(uint8_t*)0x200002ab = 0; *(uint8_t*)0x200002ac = 0; *(uint8_t*)0x200002ad = 0; *(uint8_t*)0x200002ae = 0; *(uint8_t*)0x200002af = 0; *(uint8_t*)0x200002b0 = 0; *(uint8_t*)0x200002b1 = 0; *(uint8_t*)0x200002b2 = 0; *(uint8_t*)0x200002b3 = 0; *(uint8_t*)0x200002b4 = 0; *(uint8_t*)0x200002b5 = 0; *(uint8_t*)0x200002b6 = 0; *(uint8_t*)0x200002b7 = 0; *(uint8_t*)0x200002b8 = 0; *(uint8_t*)0x200002b9 = 0; *(uint8_t*)0x200002ba = 0; *(uint8_t*)0x200002bb = 0; *(uint8_t*)0x200002bc = 0; *(uint8_t*)0x200002bd = 0; *(uint8_t*)0x200002be = 0; *(uint8_t*)0x200002bf = 0; *(uint8_t*)0x200002c0 = 0; *(uint8_t*)0x200002c1 = 0; *(uint8_t*)0x200002c2 = 0; *(uint8_t*)0x200002c3 = 0; *(uint8_t*)0x200002c4 = 0; *(uint8_t*)0x200002c5 = 0; *(uint8_t*)0x200002c6 = 0; *(uint8_t*)0x200002c7 = 0; *(uint8_t*)0x200002c8 = 0; *(uint8_t*)0x200002c9 = 0; *(uint8_t*)0x200002ca = 0; *(uint8_t*)0x200002cb = 0; *(uint32_t*)0x200002cc = 0; *(uint16_t*)0x200002d0 = 0x70; *(uint16_t*)0x200002d2 = 0xa8; *(uint32_t*)0x200002d4 = 0; *(uint64_t*)0x200002d8 = 0; *(uint64_t*)0x200002e0 = 0; *(uint16_t*)0x200002e8 = 0x38; memcpy((void*)0x200002ea, "\x4e\x45\x54\x4d\x41\x50\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00", 29); *(uint8_t*)0x20000307 = 0; *(uint32_t*)0x20000308 = 1; *(uint32_t*)0x2000030c = 5; *(uint8_t*)0x20000310 = 0xac; *(uint8_t*)0x20000311 = 0x14; *(uint8_t*)0x20000312 = -1; *(uint8_t*)0x20000313 = 0xaa; *(uint8_t*)0x20000314 = 0xac; *(uint8_t*)0x20000315 = 0x14; *(uint8_t*)0x20000316 = 0; *(uint8_t*)0x20000317 = 0; *(uint16_t*)0x20000318 = htobe16(0); *(uint16_t*)0x2000031a = 0; *(uint8_t*)0x20000320 = 0; *(uint8_t*)0x20000321 = 0; *(uint8_t*)0x20000322 = 0; *(uint8_t*)0x20000323 = 0; *(uint8_t*)0x20000324 = 0; *(uint8_t*)0x20000325 = 0; *(uint8_t*)0x20000326 = 0; *(uint8_t*)0x20000327 = 0; *(uint8_t*)0x20000328 = 0; *(uint8_t*)0x20000329 = 0; *(uint8_t*)0x2000032a = 0; *(uint8_t*)0x2000032b = 0; *(uint8_t*)0x2000032c = 0; *(uint8_t*)0x2000032d = 0; *(uint8_t*)0x2000032e = 0; *(uint8_t*)0x2000032f = 0; *(uint8_t*)0x20000330 = 0; *(uint8_t*)0x20000331 = 0; *(uint8_t*)0x20000332 = 0; *(uint8_t*)0x20000333 = 0; *(uint8_t*)0x20000334 = 0; *(uint8_t*)0x20000335 = 0; *(uint8_t*)0x20000336 = 0; *(uint8_t*)0x20000337 = 0; *(uint8_t*)0x20000338 = 0; *(uint8_t*)0x20000339 = 0; *(uint8_t*)0x2000033a = 0; *(uint8_t*)0x2000033b = 0; *(uint8_t*)0x2000033c = 0; *(uint8_t*)0x2000033d = 0; *(uint8_t*)0x2000033e = 0; *(uint8_t*)0x2000033f = 0; *(uint8_t*)0x20000340 = 0; *(uint8_t*)0x20000341 = 0; *(uint8_t*)0x20000342 = 0; *(uint8_t*)0x20000343 = 0; *(uint8_t*)0x20000344 = 0; *(uint8_t*)0x20000345 = 0; *(uint8_t*)0x20000346 = 0; *(uint8_t*)0x20000347 = 0; *(uint8_t*)0x20000348 = 0; *(uint8_t*)0x20000349 = 0; *(uint8_t*)0x2000034a = 0; *(uint8_t*)0x2000034b = 0; *(uint8_t*)0x2000034c = 0; *(uint8_t*)0x2000034d = 0; *(uint8_t*)0x2000034e = 0; *(uint8_t*)0x2000034f = 0; *(uint8_t*)0x20000350 = 0; *(uint8_t*)0x20000351 = 0; *(uint8_t*)0x20000352 = 0; *(uint8_t*)0x20000353 = 0; *(uint8_t*)0x20000354 = 0; *(uint8_t*)0x20000355 = 0; *(uint8_t*)0x20000356 = 0; *(uint8_t*)0x20000357 = 0; *(uint8_t*)0x20000358 = 0; *(uint8_t*)0x20000359 = 0; *(uint8_t*)0x2000035a = 0; *(uint8_t*)0x2000035b = 0; *(uint8_t*)0x2000035c = 0; *(uint8_t*)0x2000035d = 0; *(uint8_t*)0x2000035e = 0; *(uint8_t*)0x2000035f = 0; *(uint8_t*)0x20000360 = 0; *(uint8_t*)0x20000361 = 0; *(uint8_t*)0x20000362 = 0; *(uint8_t*)0x20000363 = 0; *(uint8_t*)0x20000364 = 0; *(uint8_t*)0x20000365 = 0; *(uint8_t*)0x20000366 = 0; *(uint8_t*)0x20000367 = 0; *(uint8_t*)0x20000368 = 0; *(uint8_t*)0x20000369 = 0; *(uint8_t*)0x2000036a = 0; *(uint8_t*)0x2000036b = 0; *(uint8_t*)0x2000036c = 0; *(uint8_t*)0x2000036d = 0; *(uint8_t*)0x2000036e = 0; *(uint8_t*)0x2000036f = 0; *(uint8_t*)0x20000370 = 0; *(uint8_t*)0x20000371 = 0; *(uint8_t*)0x20000372 = 0; *(uint8_t*)0x20000373 = 0; *(uint32_t*)0x20000374 = 0; *(uint16_t*)0x20000378 = 0x70; *(uint16_t*)0x2000037a = 0x98; *(uint32_t*)0x2000037c = 0; *(uint64_t*)0x20000380 = 0; *(uint64_t*)0x20000388 = 0; *(uint16_t*)0x20000390 = 0x28; memcpy((void*)0x20000392, "\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", 29); *(uint8_t*)0x200003af = 0; *(uint32_t*)0x200003b0 = 0xfffffffe; syscall(__NR_setsockopt, r[0], 0, 0x40, 0x20000000, 0x3b8); break; case 3: *(uint8_t*)0x20007000 = 0xaa; *(uint8_t*)0x20007001 = 0xaa; *(uint8_t*)0x20007002 = 0xaa; *(uint8_t*)0x20007003 = 0xaa; *(uint8_t*)0x20007004 = 0xaa; *(uint8_t*)0x20007005 = 0xaa; memcpy((void*)0x20007006, "\xcf\x2b\xb4\x3c\x40\xb8", 6); *(uint16_t*)0x2000700c = htobe16(0x800); STORE_BY_BITMASK(uint8_t, 0x2000700e, 5, 0, 4); STORE_BY_BITMASK(uint8_t, 0x2000700e, 4, 4, 4); STORE_BY_BITMASK(uint8_t, 0x2000700f, 0, 0, 2); STORE_BY_BITMASK(uint8_t, 0x2000700f, 0, 2, 6); *(uint16_t*)0x20007010 = htobe16(0x28); *(uint16_t*)0x20007012 = htobe16(0); *(uint16_t*)0x20007014 = htobe16(0); *(uint8_t*)0x20007016 = 0; *(uint8_t*)0x20007017 = 6; *(uint16_t*)0x20007018 = 0; *(uint8_t*)0x2000701a = 0xac; *(uint8_t*)0x2000701b = 0x23; *(uint8_t*)0x2000701c = -1; *(uint8_t*)0x2000701d = 0xaa; *(uint32_t*)0x2000701e = htobe32(0xe0000001); *(uint16_t*)0x20007022 = htobe16(0x4e20); *(uint16_t*)0x20007024 = htobe16(0x4e20); *(uint32_t*)0x20007026 = 0x42424242; *(uint32_t*)0x2000702a = 0x42424242; STORE_BY_BITMASK(uint8_t, 0x2000702e, 0, 0, 1); STORE_BY_BITMASK(uint8_t, 0x2000702e, 0, 1, 3); STORE_BY_BITMASK(uint8_t, 0x2000702e, 5, 4, 4); *(uint8_t*)0x2000702f = 0x22; *(uint16_t*)0x20007030 = htobe16(0); *(uint16_t*)0x20007032 = 0; *(uint16_t*)0x20007034 = htobe16(0); struct csum_inet csum_1; csum_inet_init(&csum_1); csum_inet_update(&csum_1, (const uint8_t*)0x2000701a, 4); csum_inet_update(&csum_1, (const uint8_t*)0x2000701e, 4); uint16_t csum_1_chunk_2 = 0x600; csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 2); uint16_t csum_1_chunk_3 = 0x1400; csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 2); csum_inet_update(&csum_1, (const uint8_t*)0x20007022, 20); *(uint16_t*)0x20007032 = csum_inet_digest(&csum_1); struct csum_inet csum_2; csum_inet_init(&csum_2); csum_inet_update(&csum_2, (const uint8_t*)0x2000700e, 20); *(uint16_t*)0x20007018 = csum_inet_digest(&csum_2); syz_emit_ethernet(0x230, 0x20007000, 0); break; case 4: res = syscall(__NR_socket, 2, 1, 0); if (res != -1) r[1] = res; break; case 5: *(uint16_t*)0x20000140 = 2; *(uint16_t*)0x20000142 = htobe16(0x4e20); *(uint32_t*)0x20000144 = htobe32(0xe0000001); *(uint8_t*)0x20000148 = 0; *(uint8_t*)0x20000149 = 0; *(uint8_t*)0x2000014a = 0; *(uint8_t*)0x2000014b = 0; *(uint8_t*)0x2000014c = 0; *(uint8_t*)0x2000014d = 0; *(uint8_t*)0x2000014e = 0; *(uint8_t*)0x2000014f = 0; syscall(__NR_bind, r[1], 0x20000140, 0x10); break; case 6: *(uint16_t*)0x20000100 = 2; *(uint16_t*)0x20000102 = htobe16(0x4e20); *(uint8_t*)0x20000104 = 0xac; *(uint8_t*)0x20000105 = 0x14; *(uint8_t*)0x20000106 = 0x14; *(uint8_t*)0x20000107 = 0xb; *(uint8_t*)0x20000108 = 0; *(uint8_t*)0x20000109 = 0; *(uint8_t*)0x2000010a = 0; *(uint8_t*)0x2000010b = 0; *(uint8_t*)0x2000010c = 0; *(uint8_t*)0x2000010d = 0; *(uint8_t*)0x2000010e = 0; *(uint8_t*)0x2000010f = 0; syscall(__NR_connect, r[1], 0x20000100, 0x10); break; case 7: memcpy((void*)0x20000040, "\x74\x75\x6e\x6c\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16); syscall(__NR_setsockopt, r[1], 1, 0x19, 0x20000040, 0xc); break; } } void test() { execute(8); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); for (procid = 0; procid < 8; procid++) { if (fork() == 0) { for (;;) { int pid = do_sandbox_none(); int status = 0; while (waitpid(pid, &status, __WALL) != pid) { } } } } sleep(1000000); return 0; }