| // KMSAN: uninit-value in inet_gro_receive |
| // https://syzkaller.appspot.com/bug?id=8c4b5f5ae46328861ac36de1e6e4b00726ee8f7b |
| // status:invalid |
| // autogenerated by syzkaller (http://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| #include <arpa/inet.h> |
| #include <dirent.h> |
| #include <endian.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <linux/capability.h> |
| #include <linux/futex.h> |
| #include <linux/if.h> |
| #include <linux/if_ether.h> |
| #include <linux/if_tun.h> |
| #include <linux/ip.h> |
| #include <linux/net.h> |
| #include <linux/tcp.h> |
| #include <net/if_arp.h> |
| #include <netinet/in.h> |
| #include <pthread.h> |
| #include <sched.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/mount.h> |
| #include <sys/prctl.h> |
| #include <sys/resource.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/uio.h> |
| #include <sys/wait.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| __attribute__((noreturn)) static void doexit(int status) |
| { |
| volatile unsigned i; |
| syscall(__NR_exit_group, status); |
| for (i = 0;; i++) { |
| } |
| } |
| #include <errno.h> |
| #include <setjmp.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| |
| 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 exitf(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(kRetryStatus); |
| } |
| |
| static __thread int skip_segv; |
| static __thread jmp_buf segv_env; |
| |
| static void segv_handler(int sig, siginfo_t* info, void* uctx) |
| { |
| uintptr_t addr = (uintptr_t)info->si_addr; |
| const uintptr_t prog_start = 1 << 20; |
| const uintptr_t prog_end = 100 << 20; |
| if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) && |
| (addr < prog_start || addr > prog_end)) { |
| _longjmp(segv_env, 1); |
| } |
| doexit(sig); |
| } |
| |
| static void install_segv_handler() |
| { |
| struct sigaction sa; |
| |
| memset(&sa, 0, sizeof(sa)); |
| sa.sa_handler = SIG_IGN; |
| syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8); |
| syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8); |
| |
| memset(&sa, 0, sizeof(sa)); |
| sa.sa_sigaction = segv_handler; |
| sa.sa_flags = SA_NODEFER | SA_SIGINFO; |
| sigaction(SIGSEGV, &sa, NULL); |
| sigaction(SIGBUS, &sa, NULL); |
| } |
| |
| #define NONFAILING(...) \ |
| { \ |
| __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \ |
| if (_setjmp(segv_env) == 0) { \ |
| __VA_ARGS__; \ |
| } \ |
| __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \ |
| } |
| |
| 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 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 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); |
| } |
| |
| #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); |
| va_end(args); |
| rv = system(command); |
| if (rv) { |
| if (panic) |
| fail("command '%s' failed: %d", &command[0], rv); |
| } |
| } |
| |
| 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 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); |
| } |
| |
| static void initialize_netdevices(void) |
| { |
| unsigned i; |
| const char* devtypes[] = {"ip6gretap", "bridge", "vcan", "bond", "team"}; |
| const char* devnames[] = {"lo", |
| "sit0", |
| "bridge0", |
| "vcan0", |
| "tunl0", |
| "gre0", |
| "gretap0", |
| "ip_vti0", |
| "ip6_vti0", |
| "ip6tnl0", |
| "ip6gre0", |
| "ip6gretap0", |
| "erspan0", |
| "bond0", |
| "veth0", |
| "veth1", |
| "team0", |
| "veth0_to_bridge", |
| "veth1_to_bridge", |
| "veth0_to_bond", |
| "veth1_to_bond", |
| "veth0_to_team", |
| "veth1_to_team"}; |
| const char* devmasters[] = {"bridge", "bond", "team"}; |
| |
| 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 type veth"); |
| |
| for (i = 0; i < sizeof(devmasters) / (sizeof(devmasters[0])); i++) { |
| execute_command( |
| 0, "ip link add name %s_slave_0 type veth peer name veth0_to_%s", |
| devmasters[i], devmasters[i]); |
| execute_command( |
| 0, "ip link add name %s_slave_1 type veth peer name veth1_to_%s", |
| devmasters[i], devmasters[i]); |
| execute_command(0, "ip link set %s_slave_0 master %s0", devmasters[i], |
| devmasters[i]); |
| execute_command(0, "ip link set %s_slave_1 master %s0", devmasters[i], |
| devmasters[i]); |
| execute_command(0, "ip link set veth0_to_%s up", devmasters[i]); |
| execute_command(0, "ip link set veth1_to_%s up", devmasters[i]); |
| } |
| execute_command(0, "ip link set bridge_slave_0 up"); |
| execute_command(0, "ip link set bridge_slave_1 up"); |
| |
| 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; |
| } |
| |
| static void flush_tun() |
| { |
| char data[SYZ_TUN_MAX_PACKET_SIZE]; |
| while (read_tun(&data[0], sizeof(data)) != -1) |
| ; |
| } |
| |
| static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2) |
| { |
| if (a0 == 0xc || a0 == 0xb) { |
| char buf[128]; |
| sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, |
| (uint8_t)a2); |
| return open(buf, O_RDWR, 0); |
| } else { |
| char buf[1024]; |
| char* hash; |
| NONFAILING(strncpy(buf, (char*)a0, sizeof(buf) - 1)); |
| buf[sizeof(buf) - 1] = 0; |
| while ((hash = strchr(buf, '#'))) { |
| *hash = '0' + (char)(a1 % 10); |
| a1 /= 10; |
| } |
| return open(buf, a2, 0); |
| } |
| } |
| |
| static bool write_file(const char* file, const char* what, ...) |
| { |
| char buf[1024]; |
| va_list args; |
| va_start(args, what); |
| vsnprintf(buf, sizeof(buf), what, args); |
| va_end(args); |
| buf[sizeof(buf) - 1] = 0; |
| int len = strlen(buf); |
| |
| int fd = open(file, O_WRONLY | O_CLOEXEC); |
| if (fd == -1) |
| return false; |
| if (write(fd, buf, len) != len) { |
| int err = errno; |
| close(fd); |
| errno = err; |
| return false; |
| } |
| close(fd); |
| return true; |
| } |
| |
| static void setup_cgroups() |
| { |
| if (mkdir("/syzcgroup", 0777)) { |
| } |
| if (mkdir("/syzcgroup/unified", 0777)) { |
| } |
| if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) { |
| } |
| if (chmod("/syzcgroup/unified", 0777)) { |
| } |
| if (!write_file("/syzcgroup/unified/cgroup.subtree_control", |
| "+cpu +memory +io +pids +rdma")) { |
| } |
| if (mkdir("/syzcgroup/cpu", 0777)) { |
| } |
| if (mount("none", "/syzcgroup/cpu", "cgroup", 0, |
| "cpuset,cpuacct,perf_event,hugetlb")) { |
| } |
| if (!write_file("/syzcgroup/cpu/cgroup.clone_children", "1")) { |
| } |
| if (chmod("/syzcgroup/cpu", 0777)) { |
| } |
| if (mkdir("/syzcgroup/net", 0777)) { |
| } |
| if (mount("none", "/syzcgroup/net", "cgroup", 0, |
| "net_cls,net_prio,devices,freezer")) { |
| } |
| if (chmod("/syzcgroup/net", 0777)) { |
| } |
| } |
| |
| static void setup_binfmt_misc() |
| { |
| if (!write_file("/proc/sys/fs/binfmt_misc/register", |
| ":syz0:M:0:syz0::./file0:")) { |
| } |
| if (!write_file("/proc/sys/fs/binfmt_misc/register", |
| ":syz1:M:1:yz1::./file0:POC")) { |
| } |
| } |
| |
| 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 = 160 << 20; |
| setrlimit(RLIMIT_AS, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 8 << 20; |
| setrlimit(RLIMIT_MEMLOCK, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 136 << 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); |
| |
| if (unshare(CLONE_NEWNS)) { |
| } |
| if (unshare(CLONE_NEWIPC)) { |
| } |
| if (unshare(0x02000000)) { |
| } |
| if (unshare(CLONE_NEWUTS)) { |
| } |
| if (unshare(CLONE_SYSVSEM)) { |
| } |
| } |
| |
| static int real_uid; |
| static int real_gid; |
| __attribute__((aligned(64 << 10))) static char sandbox_stack[1 << 20]; |
| |
| static int namespace_sandbox_proc(void* arg) |
| { |
| sandbox_common(); |
| |
| write_file("/proc/self/setgroups", "deny"); |
| if (!write_file("/proc/self/uid_map", "0 %d 1\n", real_uid)) |
| fail("write of /proc/self/uid_map failed"); |
| if (!write_file("/proc/self/gid_map", "0 %d 1\n", real_gid)) |
| fail("write of /proc/self/gid_map failed"); |
| |
| if (unshare(CLONE_NEWNET)) |
| fail("unshare(CLONE_NEWNET)"); |
| initialize_tun(); |
| initialize_netdevices(); |
| |
| if (mkdir("./syz-tmp", 0777)) |
| fail("mkdir(syz-tmp) failed"); |
| if (mount("", "./syz-tmp", "tmpfs", 0, NULL)) |
| fail("mount(tmpfs) failed"); |
| if (mkdir("./syz-tmp/newroot", 0777)) |
| fail("mkdir failed"); |
| if (mkdir("./syz-tmp/newroot/dev", 0700)) |
| fail("mkdir failed"); |
| unsigned mount_flags = MS_BIND | MS_REC | MS_PRIVATE; |
| if (mount("/dev", "./syz-tmp/newroot/dev", NULL, mount_flags, NULL)) |
| fail("mount(dev) failed"); |
| if (mkdir("./syz-tmp/newroot/proc", 0700)) |
| fail("mkdir failed"); |
| if (mount(NULL, "./syz-tmp/newroot/proc", "proc", 0, NULL)) |
| fail("mount(proc) failed"); |
| if (mkdir("./syz-tmp/newroot/selinux", 0700)) |
| fail("mkdir failed"); |
| const char* selinux_path = "./syz-tmp/newroot/selinux"; |
| if (mount("/selinux", selinux_path, NULL, mount_flags, NULL)) { |
| if (errno != ENOENT) |
| fail("mount(/selinux) failed"); |
| if (mount("/sys/fs/selinux", selinux_path, NULL, mount_flags, NULL) && |
| errno != ENOENT) |
| fail("mount(/sys/fs/selinux) failed"); |
| } |
| if (mkdir("./syz-tmp/newroot/sys", 0700)) |
| fail("mkdir failed"); |
| if (mount(NULL, "./syz-tmp/newroot/sys", "sysfs", 0, NULL)) |
| fail("mount(sysfs) failed"); |
| if (mkdir("./syz-tmp/newroot/syzcgroup", 0700)) |
| fail("mkdir failed"); |
| if (mkdir("./syz-tmp/newroot/syzcgroup/unified", 0700)) |
| fail("mkdir failed"); |
| if (mkdir("./syz-tmp/newroot/syzcgroup/cpu", 0700)) |
| fail("mkdir failed"); |
| if (mkdir("./syz-tmp/newroot/syzcgroup/net", 0700)) |
| fail("mkdir failed"); |
| if (mount("/syzcgroup/unified", "./syz-tmp/newroot/syzcgroup/unified", NULL, |
| mount_flags, NULL)) { |
| } |
| if (mount("/syzcgroup/cpu", "./syz-tmp/newroot/syzcgroup/cpu", NULL, |
| mount_flags, NULL)) { |
| } |
| if (mount("/syzcgroup/net", "./syz-tmp/newroot/syzcgroup/net", NULL, |
| mount_flags, NULL)) { |
| } |
| if (mkdir("./syz-tmp/pivot", 0777)) |
| fail("mkdir failed"); |
| if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) { |
| if (chdir("./syz-tmp")) |
| fail("chdir failed"); |
| } else { |
| if (chdir("/")) |
| fail("chdir failed"); |
| if (umount2("./pivot", MNT_DETACH)) |
| fail("umount failed"); |
| } |
| if (chroot("./newroot")) |
| fail("chroot failed"); |
| if (chdir("/")) |
| fail("chdir failed"); |
| |
| struct __user_cap_header_struct cap_hdr = {}; |
| struct __user_cap_data_struct cap_data[2] = {}; |
| cap_hdr.version = _LINUX_CAPABILITY_VERSION_3; |
| cap_hdr.pid = getpid(); |
| if (syscall(SYS_capget, &cap_hdr, &cap_data)) |
| fail("capget failed"); |
| cap_data[0].effective &= ~(1 << CAP_SYS_PTRACE); |
| cap_data[0].permitted &= ~(1 << CAP_SYS_PTRACE); |
| cap_data[0].inheritable &= ~(1 << CAP_SYS_PTRACE); |
| if (syscall(SYS_capset, &cap_hdr, &cap_data)) |
| fail("capset failed"); |
| |
| loop(); |
| doexit(1); |
| } |
| |
| static int do_sandbox_namespace(void) |
| { |
| int pid; |
| |
| setup_cgroups(); |
| setup_binfmt_misc(); |
| real_uid = getuid(); |
| real_gid = getgid(); |
| mprotect(sandbox_stack, 4096, PROT_NONE); |
| pid = |
| clone(namespace_sandbox_proc, &sandbox_stack[sizeof(sandbox_stack) - 64], |
| CLONE_NEWUSER | CLONE_NEWPID, 0); |
| if (pid < 0) |
| fail("sandbox clone failed"); |
| return pid; |
| } |
| |
| #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) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| 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) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| 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 <linux/if.h> |
| #include <linux/netfilter_bridge/ebtables.h> |
| |
| 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; |
| table->replace.entries = 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++; |
| } |
| } |
| table->replace.entries = table->entrytable; |
| 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 remove_dir(const char* dir) |
| { |
| DIR* dp; |
| struct dirent* ep; |
| int iter = 0; |
| retry: |
| while (umount2(dir, MNT_DETACH) == 0) { |
| } |
| dp = opendir(dir); |
| if (dp == NULL) { |
| if (errno == EMFILE) { |
| exitf("opendir(%s) failed due to NOFILE, exiting", dir); |
| } |
| exitf("opendir(%s) failed", dir); |
| } |
| 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)) |
| exitf("lstat(%s) failed", filename); |
| if (S_ISDIR(st.st_mode)) { |
| remove_dir(filename); |
| continue; |
| } |
| int i; |
| for (i = 0;; i++) { |
| if (unlink(filename) == 0) |
| break; |
| if (errno == EROFS) { |
| break; |
| } |
| if (errno != EBUSY || i > 100) |
| exitf("unlink(%s) failed", filename); |
| if (umount2(filename, MNT_DETACH)) |
| exitf("umount(%s) failed", filename); |
| } |
| } |
| closedir(dp); |
| int i; |
| for (i = 0;; i++) { |
| if (rmdir(dir) == 0) |
| break; |
| if (i < 100) { |
| if (errno == EROFS) { |
| break; |
| } |
| if (errno == EBUSY) { |
| if (umount2(dir, MNT_DETACH)) |
| exitf("umount(%s) failed", dir); |
| continue; |
| } |
| if (errno == ENOTEMPTY) { |
| if (iter < 100) { |
| iter++; |
| goto retry; |
| } |
| } |
| } |
| exitf("rmdir(%s) failed", dir); |
| } |
| } |
| |
| static void execute_one(); |
| extern unsigned long long procid; |
| |
| static void loop() |
| { |
| checkpoint_net_namespace(); |
| char cgroupdir[64]; |
| snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid); |
| char cgroupdir_cpu[64]; |
| snprintf(cgroupdir_cpu, sizeof(cgroupdir_cpu), "/syzcgroup/cpu/syz%llu", |
| procid); |
| char cgroupdir_net[64]; |
| snprintf(cgroupdir_net, sizeof(cgroupdir_net), "/syzcgroup/net/syz%llu", |
| procid); |
| if (mkdir(cgroupdir, 0777)) { |
| } |
| if (mkdir(cgroupdir_cpu, 0777)) { |
| } |
| if (mkdir(cgroupdir_net, 0777)) { |
| } |
| int pid = getpid(); |
| char procs_file[128]; |
| snprintf(procs_file, sizeof(procs_file), "%s/cgroup.procs", cgroupdir); |
| if (!write_file(procs_file, "%d", pid)) { |
| } |
| snprintf(procs_file, sizeof(procs_file), "%s/cgroup.procs", cgroupdir_cpu); |
| if (!write_file(procs_file, "%d", pid)) { |
| } |
| snprintf(procs_file, sizeof(procs_file), "%s/cgroup.procs", cgroupdir_net); |
| if (!write_file(procs_file, "%d", pid)) { |
| } |
| int iter; |
| for (iter = 0;; iter++) { |
| char cwdbuf[32]; |
| sprintf(cwdbuf, "./%d", iter); |
| if (mkdir(cwdbuf, 0777)) |
| fail("failed to mkdir"); |
| int pid = fork(); |
| if (pid < 0) |
| fail("clone failed"); |
| if (pid == 0) { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| if (chdir(cwdbuf)) |
| fail("failed to chdir"); |
| if (symlink(cgroupdir, "./cgroup")) { |
| } |
| if (symlink(cgroupdir_cpu, "./cgroup.cpu")) { |
| } |
| if (symlink(cgroupdir_net, "./cgroup.net")) { |
| } |
| flush_tun(); |
| execute_one(); |
| 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 < 3 * 1000) |
| continue; |
| kill(-pid, SIGKILL); |
| kill(pid, SIGKILL); |
| while (waitpid(-1, &status, __WALL) != pid) { |
| } |
| break; |
| } |
| remove_dir(cwdbuf); |
| 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 int collide; |
| |
| 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); |
| if (collide && call % 2) |
| break; |
| 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; |
| unsigned long long procid; |
| void execute_call(int call) |
| { |
| long res; |
| switch (call) { |
| case 0: |
| res = syscall(__NR_socket, 2, 1, 0); |
| if (res != -1) |
| r[0] = res; |
| break; |
| case 1: |
| NONFAILING(*(uint16_t*)0x20942000 = 2); |
| NONFAILING(*(uint16_t*)0x20942002 = htobe16(0x4e20)); |
| NONFAILING(*(uint32_t*)0x20942004 = htobe32(0xe0000001)); |
| NONFAILING(*(uint8_t*)0x20942008 = 0); |
| NONFAILING(*(uint8_t*)0x20942009 = 0); |
| NONFAILING(*(uint8_t*)0x2094200a = 0); |
| NONFAILING(*(uint8_t*)0x2094200b = 0); |
| NONFAILING(*(uint8_t*)0x2094200c = 0); |
| NONFAILING(*(uint8_t*)0x2094200d = 0); |
| NONFAILING(*(uint8_t*)0x2094200e = 0); |
| NONFAILING(*(uint8_t*)0x2094200f = 0); |
| syscall(__NR_bind, r[0], 0x20942000, 0x10); |
| break; |
| case 2: |
| NONFAILING(memcpy((void*)0x20000080, "/dev/amidi#", 12)); |
| res = syz_open_dev(0x20000080, 0xea9, 0x400); |
| if (res != -1) |
| r[1] = res; |
| break; |
| case 3: |
| syscall(__NR_ioctl, r[1], 0x541d); |
| break; |
| case 4: |
| NONFAILING(*(uint32_t*)0x20000040 = r[0]); |
| res = syscall(__NR_ioctl, -1, 0x89e2, 0x20000040); |
| if (res != -1) |
| NONFAILING(r[2] = *(uint32_t*)0x20000040); |
| break; |
| case 5: |
| syscall(__NR_setsockopt, r[2], 0x111, 5, 9, 4); |
| break; |
| case 6: |
| NONFAILING(*(uint32_t*)0x20d4effc = 1); |
| syscall(__NR_setsockopt, r[0], 1, 0x3c, 0x20d4effc, 4); |
| break; |
| case 7: |
| NONFAILING(*(uint16_t*)0x20000000 = 2); |
| NONFAILING(*(uint16_t*)0x20000002 = htobe16(0x4e20)); |
| NONFAILING(*(uint8_t*)0x20000004 = 0xac); |
| NONFAILING(*(uint8_t*)0x20000005 = 0x14); |
| NONFAILING(*(uint8_t*)0x20000006 = 0x14); |
| NONFAILING(*(uint8_t*)0x20000007 = 0x18); |
| NONFAILING(*(uint8_t*)0x20000008 = 0); |
| NONFAILING(*(uint8_t*)0x20000009 = 0); |
| NONFAILING(*(uint8_t*)0x2000000a = 0); |
| NONFAILING(*(uint8_t*)0x2000000b = 0); |
| NONFAILING(*(uint8_t*)0x2000000c = 0); |
| NONFAILING(*(uint8_t*)0x2000000d = 0); |
| NONFAILING(*(uint8_t*)0x2000000e = 0); |
| NONFAILING(*(uint8_t*)0x2000000f = 0); |
| syscall(__NR_connect, r[0], 0x20000000, 0x10); |
| break; |
| case 8: |
| NONFAILING(memcpy( |
| (void*)0x200001c0, |
| "\x74\x75\x6e\x6c\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", |
| 16)); |
| syscall(__NR_setsockopt, r[0], 1, 0x19, 0x200001c0, 0x10); |
| break; |
| case 9: |
| NONFAILING(memcpy( |
| (void*)0x20000200, |
| "\x0f\xd8\xa4\xc5\x2f\x36\xde\x81\xbf\xe8\xa0\x6c\x28\xd2\xc8\x96\xe9" |
| "\x71\xc2\x7d\x31\x30\x0d\x4b\xf3\xc1\x61\x8c\x5c\xb7\x1d\x5b\x5a\x6c" |
| "\x48\x07\x51\xfa\x1d\x38\xd0\xda\xa4\x6a\xd6\x95\x3c\x8c\x60\xba\xe8" |
| "\x87\x79\x89\xd5\xf6\xdb\xf2\x8a\x9e\x8d\x30\xa1\xd6\x9f\x61\xdb\x9f" |
| "\x47\xb5\xc3\x0b\x92\x93\xd8\xff\x87\xff\xf6\xf9\x64\x18\x1d\x79\x5a" |
| "\x45\x40\x62\x04\x73\xcd\x22\x4a\xdd\x7a\x27\xa2\x1c\x1b\xb0\x90\xef" |
| "\x8b\xf5\xa9\x30\xa8\xbc\x33\xc4\xb2\xef\xc5\xed\xb1\x7f\x99\x69\xcc" |
| "\xf0\xd1\x2a\x9c\xc7\x30\x6b\xcf\x04\x5e\x00\xfe\xb9\x3f\x74\xcd\x79" |
| "\xf1\xf4\x71\xd9\xa3\xfa\x61\x80\x3b\x96\x02\xa6\xc1\x3d\xd2\xc3\x05" |
| "\x2d\x8a\xab\x2c\x2d\x1e\x03\xa3\x0e\xe4\x51\x88\x74\x51\xb2\xde\x6c" |
| "\xee\x65\x92\x8d\x9a\xc0\x2f\x99\x7b\x11\x88\xe1\x90\xbf\x11\x48\x79" |
| "\x91\x78\xa4\xf8\x03\xf3\xde\xd6\xfe\x00\xcb\x5c\xeb\xea\x08\x1c\x50" |
| "\x31\xeb\x4a\x01\x6e\xed\xf6\xa2\x9a\x7d\x4c\x95\xbb\x46\x2c\xe9\x76" |
| "\x03\xeb\xdd\xfa\x1d\xfb\x69\x91\xed\x3b\x23\xf9\x03\x04\xc5\x14\xcd" |
| "\x07\x6c\x06\xe9\x4a\xda\x72\xf0\x56\x78\xc1\xd4\x65\x1c\x66\xf4\xa5" |
| "\xe5\xea\xac\x3a\x9f\x1f\x6d\xc7\x39\x71\x62\x33\x5a\x99\x32\x43\x23" |
| "\xaa\x4a\xcd\xa1\x01\xd5\x98\x70\xb4\xea\x47\x69\x99\x75\xb5\x38\x37" |
| "\x2f\xd6\x5c\x25\x7b\xbf\x7e\x7b\xf3\xd3\x6a\xdc\x1b\x8b\xaa\xd4\xe0" |
| "\x6c\xf1\x17\x3d\xd9\xac\xfb\x53\xe3\x16\x33\x12\x5a\xac\x7e\x3a\xeb" |
| "\xec\xdb\x21\xbf\x0f\x53\x20\xff\x72\x11\x9d\x73\x64\x71\x65\x31\x03" |
| "\x52\xc3\x36\x88\xae\x65\xe3\x04\x78\x55\x07\x74\xee\x23\xfb\x13\x73" |
| "\x57\x93\x4a\xac\xd5\xb5\x78\x1d\x34\xc3\xa0\xbb\xaa\xf1\xbd\x13\x68" |
| "\x71\xa3\x93\xd9\xd1\x42\xf2\x8a\xb7\xfc\x1d\xed\x7f\x63\x57\x82\xb0" |
| "\x8d\x0b\x43\x3a\x00\x40\x21\x81\x65\x34\x5d\x5c\x05\x73\x27\x55\xaf" |
| "\xb2\xf1\xec\x79\x84\xd7\xd4\xf4\x12\x0c\x1c\xb2\x43\xcb\xd0\xcd\x3e" |
| "\x63\x8d\x7b\xfb\x5e\x51\xe2\x4e\x27\x76\x7e\x61\x23\x5e\x91\x3e\x2c" |
| "\xa6\x08\xb6\x3d\x8b\x9f\x57\x06\x68\x31\x63\xb2\x77\xaa\x93\x01\x5e" |
| "\x7f\xa7\xa8\xcb\xb2\x5a\x49\x97\xe4\x2f\x6a\x20\xe4\xc4\x80\x42\x4e" |
| "\xda\xab\x75\x57\xec\xc0\x11\x91\x37\x40\x64\x67\x48\x81\xd0\x44\x6f" |
| "\x58\x4b\x07\x26\xfb\x5d\x80\x68\x38\x81\xfb\x9e\xbb\x22\x82\x52\x3f" |
| "\x56\xf8\x49\xdd\x9e\xa8\x18\xbc\xe7\xcb\x7d\x60\x0c\x21\x99\x53\x0d" |
| "\x84\x30\x54\x92\xde\xf6\x65\x16\x72\xd4\x97\xc6\x13\xf0\x28\x22\x37" |
| "\xec\x17\xd6\xa7\xd3\x6e\xcd\x1c\x33\xa1\x88\xa8\xb0\x94\x4a\x15\xef" |
| "\x85\xd0\x81\xd0\xa2\x1c\x63\x68\xc7\x31\x19\x31\x95\xc5\xd4\x9d\xbe" |
| "\xfb\xd5\x27\xf9\xa2\xb6\x58\xf7\x71\xfa\xd3\x71\x85\x08\x49\x7f\x62" |
| "\xe3\x19\x5d\x27\x14\x77\xe8\xb2\xd7\x37\x16\x5b\x83\x3c\x16\x2b\x60" |
| "\x39\x30\x45\xf5\x70\x4f\xd2\x0c\xd7\x41\xec\xf1\xe6\xb1\xa1\x2c\x43" |
| "\x81\xa3\x86\x0c\x0d\x62\x11\x2f\x3b\x90\x1e\x0d\x03\xb1\x43\xb7\x30" |
| "\xa0\x41\x7e\x38\x43\xa8\xd7\x2f\x16\x17\xb7\x06\x74\xf8\xed\x2c\x78" |
| "\x8c\x80\x95\xe2\xc8\x30\xe2\xf7\x20\xc6\x10\xfd\xa3\xba\x37\x32\xe8" |
| "\x42\x8a\xf0\x74\x78\x7a\xd1\x38\x0d\x2f\x86\x76\xf7\x84\x2e\xd5\x40" |
| "\x0c\x86\xd8\x59\x75\x86\xf4\xfe\x69\xd7\x06\x6e\xec\x18\x07\xc1\xe7" |
| "\xe8\xda\xcc\x68\x2d\x50\x8c\x09\x86\x02\x9b\x30\xa2\x49\xd5\x30\xc9" |
| "\x8f\xeb\x77\xad\x2a\xb2\x59\x02\xd7\x58\xfc\xe3\x12\xd8\x36\x59\xe5" |
| "\x48\x3b\x2c\xb0\xed\xee\x66\xd3\xce\x09\x03\x6a\x94\xd3\x2d\xfc\x71" |
| "\x8e\x5b\xef\x16\x0b\x4d\xe5\xf5\xba\xea\x5f\x68\x8d\x21\xb5\x10\xec" |
| "\x00\x85\x91\xc5\xee\x27\x89\xa9\x7b\xf9\x14\xf7\xf2\x84\xc5\x92\x57" |
| "\x01\x62\x06\x52\x92\xa9\x53\x51\x00\x7a\xf0\xe8\xf8\xff\x3a\x2a\x90" |
| "\x25\xe3\xba\x70\x25\x1f\x04\x88\x62\x5f\x8a\xff\xab\x9c\x71\x45\x32" |
| "\xea\xee\x62\x6e\x0c\xc6\x16\x66\x6c\x8d\x46\xe7\x39\x01\xcb\xbd\xe7" |
| "\x98\x6d\xc5\x7e\x72\x63\x8a\xbe\x13\xd8\xee\x79\x57\x70\xb5\x84\x1e" |
| "\x82\x51\xe1\x97\x99\x77\xab\x42\x4b\x09\x7b\x39\x06\xcd\x09\xb7\x2c" |
| "\x35\xd2\xa1\xf9\xe0\xb8\xb8\x6b\x82\x8c\x79\x23\x21\xbc\x0d\xc7\xa7" |
| "\x03\x00\x1e\x7a\xdf\x77\x3f\x2d\xbb\xe5\x65\xfe\x79\xf4\xc9\x80\x90" |
| "\xdc\x9c\x95\x61\x4f\x77\xbb\x31\xdc\x95\x52\xa3\xf2\x4f\x1a\xad\x3c" |
| "\xcb\xac\x7f\x08\xf3\x65\xa4\x46\x69\x85\xf8\x13\x4f\x67\xf0\xbf\xe0" |
| "\x4e\x26\x8f\x69\xc9\x80\xef\xbf\x5c\x08\x43\xfa\xce\x8b\xce\xda\xaa" |
| "\xf5\x85\xa4\x0c\x1c\x16\x41\x9e\xf0\x26\xeb\x6f\xdf\x90\xac\xe1\x93" |
| "\x29\xdb\x64\x83\x65\x4a\x3d\x0b\x6d\xde\x84\x4b\xbd\xad\x8d\x10\x30" |
| "\x0a\xb0\x6c\xdd\xe1\x87\x0e\x5f\x76\xfe\xae\xab\x96\x03\xc4\xaf\xde" |
| "\xbd\x1d\x30\x3e\xbd\x0a\xa1\xa9\x9f\x9f\xd6\x42\xce\x22\x4f\x28\x5a" |
| "\xc3\x70\xa9\x16\x8c\x89\xaf\x08\x53\x4c\x29\x8b\x0f\x95\xd7\xf2\x9b" |
| "\x8b\x57\x8c\xfa\xf7\x52\xd9\x01\x53\x0f\xfb\x72\x76\x99\x2c\x91\x44" |
| "\xb2\x4a\xf9\xeb\x81\xfd\xca\x37\x15\x80\xbd\x3e\xc2\xa3\x74\x91\x16" |
| "\x50\x37\x74\xf2\xb1\x8a\x87\x4d\x0a\x33\xa4\xfa\x57\xf7\xa3\x98\x40" |
| "\x8f\x6b\x57\x9a\xf0\x08\x65\xd1\x89\xef\xdf\x85\x3d\x31\x4b\xa8\x5b" |
| "\x8f\xb1\x2a\xad\x4a\xef\xc4\x96\xdf\xad\x2c\xfc\xfd\x87\xc4\x47\x62" |
| "\x15\xe7\x67\x53\x6b\x31\x3e\xbf\x33\x74\x2b\xb2\x26\x1d\xa4\xb1\x8b" |
| "\x9a\x03\xee\xd4\x9b\x68\x61\x69\x00\xcd\xa2\x69\xa8\xf1\x3d\xde\x69" |
| "\xc4\x66\x68\xe5\xab\xf8\xa9\xd4\xf3\x8f\x82\x23\xf9\x4e\x1c\xc2\x22" |
| "\x46\x35\x93\x07\x5b\x22\xe9\x40\x39\x25\x14\xb4\x86\x0c\xad\x42\xc2" |
| "\xb4\xb4\x5e\x56\x3f\x0a\xc1\x27\x82\x7f\xb1\x59\x4d\x80\xac\xe6\x2f" |
| "\x2f\x20\x32\x66\xaa\xb5\x72\xd6\x70\xfd\x34\x87\x7b\x71\x11\xda\xe7" |
| "\x0c\x07\xb5\xdf\x9d\x3a\x23\x45\x4f\x33\xde\x1b\x0f\x21\x0e\xe5\x25" |
| "\x3b\x00\x0b\x7b\x9b\x1c\x50\xb2\x04\x5a\x0b\xfd\xd7\x3d\x43\x6f\xd8" |
| "\x61\xec\xa7\x8d\xa3\xf2\x84\xb2\x1a\xad\x31\x97\xee\x21\xf4\x39\x28" |
| "\x59\x8e\x55\x3d\x6e\x43\x81\x99\x2e\xcd\x74\x17\x4e\x55\xfa\xa8\x9e" |
| "\xe0\xb7\x6f\x13\xee\x93\xf8\x9c\x21\x5b\x0e\x10\x74\xea\x61\x40\x1f" |
| "\xeb\x18\x60\x13\xfd\x92\x82\x7b\x4b\x29\x3f\xc5\x02\x62\x11\xda\xbb" |
| "\xf6\x0b\x4d\xd1\x43\x7d\xe0\xdd\x0f\x4c\xda\xa2\x87\xfd\xd0\x24\x7f" |
| "\x05\xb7\x0a\x43\xfb\xb4\xf5\x1c\x20\x37\x30\x15\x88\xb3\xe6\xb9\xa3" |
| "\x8e\x74\x61\x12\x84\x4f\x71\xf2\xf3\x3e\xff\xcc\x86\xc2\xc3\x10\x97" |
| "\x82\x19\x5a\xa5\xa6\x5f\xe7\xb6\x1b\xa5\x3f\x83\xfd\x60\x8e\x16\xd9" |
| "\x0b\x68\x39\x68\xce\x5b\x19\x36\xbe\x6d\x9f\xbb\xd8\x09\xd8\x14\xd6" |
| "\xaa", |
| 1429)); |
| syscall(__NR_sendto, r[0], 0x20000200, 0x595, 0, 0, 0); |
| break; |
| } |
| } |
| |
| void execute_one() |
| { |
| execute(10); |
| collide = 1; |
| execute(10); |
| } |
| |
| int main() |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| install_segv_handler(); |
| char* cwd = get_current_dir_name(); |
| for (;;) { |
| if (chdir(cwd)) |
| fail("failed to chdir"); |
| use_temporary_dir(); |
| int pid = do_sandbox_namespace(); |
| int status = 0; |
| while (waitpid(pid, &status, __WALL) != pid) { |
| } |
| } |
| } |
