// https://syzkaller.appspot.com/bug?id=ebb5eb4966a90320c0fbaf6096066cfddee2438f // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static __thread int clone_ongoing; static __thread int skip_segv; static __thread jmp_buf segv_env; static void segv_handler(int sig, siginfo_t* info, void* ctx) { if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) { exit(sig); } uintptr_t addr = (uintptr_t)info->si_addr; const uintptr_t prog_start = 1 << 20; const uintptr_t prog_end = 100 << 20; int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0; int valid = addr < prog_start || addr > prog_end; if (skip && valid) { _longjmp(segv_env, 1); } exit(sig); } static void install_segv_handler(void) { 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(...) \ ({ \ int ok = 1; \ __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \ if (_setjmp(segv_env) == 0) { \ __VA_ARGS__; \ } else \ ok = 0; \ __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \ ok; \ }) #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) 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; } struct nlmsg { char* pos; int nesting; struct nlattr* nested[8]; char buf[4096]; }; static void netlink_init(struct nlmsg* nlmsg, int typ, int flags, const void* data, int size) { memset(nlmsg, 0, sizeof(*nlmsg)); struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf; hdr->nlmsg_type = typ; hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags; memcpy(hdr + 1, data, size); nlmsg->pos = (char*)(hdr + 1) + NLMSG_ALIGN(size); } static void netlink_attr(struct nlmsg* nlmsg, int typ, const void* data, int size) { struct nlattr* attr = (struct nlattr*)nlmsg->pos; attr->nla_len = sizeof(*attr) + size; attr->nla_type = typ; if (size > 0) memcpy(attr + 1, data, size); nlmsg->pos += NLMSG_ALIGN(attr->nla_len); } static int netlink_send_ext(struct nlmsg* nlmsg, int sock, uint16_t reply_type, int* reply_len, bool dofail) { if (nlmsg->pos > nlmsg->buf + sizeof(nlmsg->buf) || nlmsg->nesting) exit(1); struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf; hdr->nlmsg_len = nlmsg->pos - nlmsg->buf; struct sockaddr_nl addr; memset(&addr, 0, sizeof(addr)); addr.nl_family = AF_NETLINK; ssize_t n = sendto(sock, nlmsg->buf, hdr->nlmsg_len, 0, (struct sockaddr*)&addr, sizeof(addr)); if (n != (ssize_t)hdr->nlmsg_len) { if (dofail) exit(1); return -1; } n = recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0); if (reply_len) *reply_len = 0; if (n < 0) { if (dofail) exit(1); return -1; } if (n < (ssize_t)sizeof(struct nlmsghdr)) { errno = EINVAL; if (dofail) exit(1); return -1; } if (hdr->nlmsg_type == NLMSG_DONE) return 0; if (reply_len && hdr->nlmsg_type == reply_type) { *reply_len = n; return 0; } if (n < (ssize_t)(sizeof(struct nlmsghdr) + sizeof(struct nlmsgerr))) { errno = EINVAL; if (dofail) exit(1); return -1; } if (hdr->nlmsg_type != NLMSG_ERROR) { errno = EINVAL; if (dofail) exit(1); return -1; } errno = -((struct nlmsgerr*)(hdr + 1))->error; return -errno; } static int netlink_send(struct nlmsg* nlmsg, int sock) { return netlink_send_ext(nlmsg, sock, 0, NULL, true); } static int netlink_query_family_id(struct nlmsg* nlmsg, int sock, const char* family_name, bool dofail) { struct genlmsghdr genlhdr; memset(&genlhdr, 0, sizeof(genlhdr)); genlhdr.cmd = CTRL_CMD_GETFAMILY; netlink_init(nlmsg, GENL_ID_CTRL, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(nlmsg, CTRL_ATTR_FAMILY_NAME, family_name, strnlen(family_name, GENL_NAMSIZ - 1) + 1); int n = 0; int err = netlink_send_ext(nlmsg, sock, GENL_ID_CTRL, &n, dofail); if (err < 0) { return -1; } uint16_t id = 0; struct nlattr* attr = (struct nlattr*)(nlmsg->buf + NLMSG_HDRLEN + NLMSG_ALIGN(sizeof(genlhdr))); for (; (char*)attr < nlmsg->buf + n; attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) { if (attr->nla_type == CTRL_ATTR_FAMILY_ID) { id = *(uint16_t*)(attr + 1); break; } } if (!id) { errno = EINVAL; return -1; } recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0); return id; } static void netlink_device_change(struct nlmsg* nlmsg, int sock, const char* name, bool up, const char* master, const void* mac, int macsize, const char* new_name) { struct ifinfomsg hdr; memset(&hdr, 0, sizeof(hdr)); if (up) hdr.ifi_flags = hdr.ifi_change = IFF_UP; hdr.ifi_index = if_nametoindex(name); netlink_init(nlmsg, RTM_NEWLINK, 0, &hdr, sizeof(hdr)); if (new_name) netlink_attr(nlmsg, IFLA_IFNAME, new_name, strlen(new_name)); if (master) { int ifindex = if_nametoindex(master); netlink_attr(nlmsg, IFLA_MASTER, &ifindex, sizeof(ifindex)); } if (macsize) netlink_attr(nlmsg, IFLA_ADDRESS, mac, macsize); int err = netlink_send(nlmsg, sock); if (err < 0) { } } static int netlink_add_addr(struct nlmsg* nlmsg, int sock, const char* dev, const void* addr, int addrsize) { struct ifaddrmsg hdr; memset(&hdr, 0, sizeof(hdr)); hdr.ifa_family = addrsize == 4 ? AF_INET : AF_INET6; hdr.ifa_prefixlen = addrsize == 4 ? 24 : 120; hdr.ifa_scope = RT_SCOPE_UNIVERSE; hdr.ifa_index = if_nametoindex(dev); netlink_init(nlmsg, RTM_NEWADDR, NLM_F_CREATE | NLM_F_REPLACE, &hdr, sizeof(hdr)); netlink_attr(nlmsg, IFA_LOCAL, addr, addrsize); netlink_attr(nlmsg, IFA_ADDRESS, addr, addrsize); return netlink_send(nlmsg, sock); } static void netlink_add_addr4(struct nlmsg* nlmsg, int sock, const char* dev, const char* addr) { struct in_addr in_addr; inet_pton(AF_INET, addr, &in_addr); int err = netlink_add_addr(nlmsg, sock, dev, &in_addr, sizeof(in_addr)); if (err < 0) { } } static void netlink_add_addr6(struct nlmsg* nlmsg, int sock, const char* dev, const char* addr) { struct in6_addr in6_addr; inet_pton(AF_INET6, addr, &in6_addr); int err = netlink_add_addr(nlmsg, sock, dev, &in6_addr, sizeof(in6_addr)); if (err < 0) { } } static void netlink_add_neigh(struct nlmsg* nlmsg, int sock, const char* name, const void* addr, int addrsize, const void* mac, int macsize) { struct ndmsg hdr; memset(&hdr, 0, sizeof(hdr)); hdr.ndm_family = addrsize == 4 ? AF_INET : AF_INET6; hdr.ndm_ifindex = if_nametoindex(name); hdr.ndm_state = NUD_PERMANENT; netlink_init(nlmsg, RTM_NEWNEIGH, NLM_F_EXCL | NLM_F_CREATE, &hdr, sizeof(hdr)); netlink_attr(nlmsg, NDA_DST, addr, addrsize); netlink_attr(nlmsg, NDA_LLADDR, mac, macsize); int err = netlink_send(nlmsg, sock); if (err < 0) { } } static struct nlmsg nlmsg; static int tunfd = -1; #define TUN_IFACE "syz_tun" #define LOCAL_MAC 0xaaaaaaaaaaaa #define REMOTE_MAC 0xaaaaaaaaaabb #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 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 = 200; if (dup2(tunfd, kTunFd) < 0) exit(1); 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; if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) { exit(1); } char sysctl[64]; sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/accept_dad", TUN_IFACE); write_file(sysctl, "0"); sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/router_solicitations", TUN_IFACE); write_file(sysctl, "0"); int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (sock == -1) exit(1); netlink_add_addr4(&nlmsg, sock, TUN_IFACE, LOCAL_IPV4); netlink_add_addr6(&nlmsg, sock, TUN_IFACE, LOCAL_IPV6); uint64_t macaddr = REMOTE_MAC; struct in_addr in_addr; inet_pton(AF_INET, REMOTE_IPV4, &in_addr); netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in_addr, sizeof(in_addr), &macaddr, ETH_ALEN); struct in6_addr in6_addr; inet_pton(AF_INET6, REMOTE_IPV6, &in6_addr); netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in6_addr, sizeof(in6_addr), &macaddr, ETH_ALEN); macaddr = LOCAL_MAC; netlink_device_change(&nlmsg, sock, TUN_IFACE, true, 0, &macaddr, ETH_ALEN, NULL); close(sock); } #define WIFI_INITIAL_DEVICE_COUNT 2 #define WIFI_MAC_BASE {0x08, 0x02, 0x11, 0x00, 0x00, 0x00} #define WIFI_IBSS_BSSID {0x50, 0x50, 0x50, 0x50, 0x50, 0x50} #define WIFI_IBSS_SSID {0x10, 0x10, 0x10, 0x10, 0x10, 0x10} #define WIFI_DEFAULT_FREQUENCY 2412 #define WIFI_DEFAULT_SIGNAL 0 #define WIFI_DEFAULT_RX_RATE 1 #define HWSIM_CMD_REGISTER 1 #define HWSIM_CMD_FRAME 2 #define HWSIM_CMD_NEW_RADIO 4 #define HWSIM_ATTR_SUPPORT_P2P_DEVICE 14 #define HWSIM_ATTR_PERM_ADDR 22 #define IF_OPER_UP 6 struct join_ibss_props { int wiphy_freq; bool wiphy_freq_fixed; uint8_t* mac; uint8_t* ssid; int ssid_len; }; static int set_interface_state(const char* interface_name, int on) { struct ifreq ifr; int sock = socket(AF_INET, SOCK_DGRAM, 0); if (sock < 0) { return -1; } memset(&ifr, 0, sizeof(ifr)); strcpy(ifr.ifr_name, interface_name); int ret = ioctl(sock, SIOCGIFFLAGS, &ifr); if (ret < 0) { close(sock); return -1; } if (on) ifr.ifr_flags |= IFF_UP; else ifr.ifr_flags &= ~IFF_UP; ret = ioctl(sock, SIOCSIFFLAGS, &ifr); close(sock); if (ret < 0) { return -1; } return 0; } static int nl80211_set_interface(struct nlmsg* nlmsg, int sock, int nl80211_family, uint32_t ifindex, uint32_t iftype, bool dofail) { struct genlmsghdr genlhdr; memset(&genlhdr, 0, sizeof(genlhdr)); genlhdr.cmd = NL80211_CMD_SET_INTERFACE; netlink_init(nlmsg, nl80211_family, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(nlmsg, NL80211_ATTR_IFINDEX, &ifindex, sizeof(ifindex)); netlink_attr(nlmsg, NL80211_ATTR_IFTYPE, &iftype, sizeof(iftype)); int err = netlink_send_ext(nlmsg, sock, 0, NULL, dofail); if (err < 0) { } return err; } static int nl80211_join_ibss(struct nlmsg* nlmsg, int sock, int nl80211_family, uint32_t ifindex, struct join_ibss_props* props, bool dofail) { struct genlmsghdr genlhdr; memset(&genlhdr, 0, sizeof(genlhdr)); genlhdr.cmd = NL80211_CMD_JOIN_IBSS; netlink_init(nlmsg, nl80211_family, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(nlmsg, NL80211_ATTR_IFINDEX, &ifindex, sizeof(ifindex)); netlink_attr(nlmsg, NL80211_ATTR_SSID, props->ssid, props->ssid_len); netlink_attr(nlmsg, NL80211_ATTR_WIPHY_FREQ, &(props->wiphy_freq), sizeof(props->wiphy_freq)); if (props->mac) netlink_attr(nlmsg, NL80211_ATTR_MAC, props->mac, ETH_ALEN); if (props->wiphy_freq_fixed) netlink_attr(nlmsg, NL80211_ATTR_FREQ_FIXED, NULL, 0); int err = netlink_send_ext(nlmsg, sock, 0, NULL, dofail); if (err < 0) { } return err; } static int get_ifla_operstate(struct nlmsg* nlmsg, int ifindex, bool dofail) { struct ifinfomsg info; memset(&info, 0, sizeof(info)); info.ifi_family = AF_UNSPEC; info.ifi_index = ifindex; int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (sock == -1) { return -1; } netlink_init(nlmsg, RTM_GETLINK, 0, &info, sizeof(info)); int n; int err = netlink_send_ext(nlmsg, sock, RTM_NEWLINK, &n, dofail); close(sock); if (err) { return -1; } struct rtattr* attr = IFLA_RTA(NLMSG_DATA(nlmsg->buf)); for (; RTA_OK(attr, n); attr = RTA_NEXT(attr, n)) { if (attr->rta_type == IFLA_OPERSTATE) return *((int32_t*)RTA_DATA(attr)); } return -1; } static int await_ifla_operstate(struct nlmsg* nlmsg, char* interface, int operstate, bool dofail) { int ifindex = if_nametoindex(interface); while (true) { usleep(1000); int ret = get_ifla_operstate(nlmsg, ifindex, dofail); if (ret < 0) return ret; if (ret == operstate) return 0; } return 0; } static int nl80211_setup_ibss_interface(struct nlmsg* nlmsg, int sock, int nl80211_family_id, char* interface, struct join_ibss_props* ibss_props, bool dofail) { int ifindex = if_nametoindex(interface); if (ifindex == 0) { return -1; } int ret = nl80211_set_interface(nlmsg, sock, nl80211_family_id, ifindex, NL80211_IFTYPE_ADHOC, dofail); if (ret < 0) { return -1; } ret = set_interface_state(interface, 1); if (ret < 0) { return -1; } ret = nl80211_join_ibss(nlmsg, sock, nl80211_family_id, ifindex, ibss_props, dofail); if (ret < 0) { return -1; } return 0; } static int hwsim80211_create_device(struct nlmsg* nlmsg, int sock, int hwsim_family, uint8_t mac_addr[ETH_ALEN]) { struct genlmsghdr genlhdr; memset(&genlhdr, 0, sizeof(genlhdr)); genlhdr.cmd = HWSIM_CMD_NEW_RADIO; netlink_init(nlmsg, hwsim_family, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(nlmsg, HWSIM_ATTR_SUPPORT_P2P_DEVICE, NULL, 0); netlink_attr(nlmsg, HWSIM_ATTR_PERM_ADDR, mac_addr, ETH_ALEN); int err = netlink_send(nlmsg, sock); if (err < 0) { } return err; } static void initialize_wifi_devices(void) { int rfkill = open("/dev/rfkill", O_RDWR); if (rfkill == -1) exit(1); struct rfkill_event event = {0}; event.type = RFKILL_TYPE_ALL; event.op = RFKILL_OP_CHANGE_ALL; if (write(rfkill, &event, sizeof(event)) != (ssize_t)(sizeof(event))) exit(1); close(rfkill); uint8_t mac_addr[6] = WIFI_MAC_BASE; int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); if (sock < 0) exit(1); int hwsim_family_id = netlink_query_family_id(&nlmsg, sock, "MAC80211_HWSIM", true); int nl80211_family_id = netlink_query_family_id(&nlmsg, sock, "nl80211", true); if (hwsim_family_id < 0 || nl80211_family_id < 0) exit(1); uint8_t ssid[] = WIFI_IBSS_SSID; uint8_t bssid[] = WIFI_IBSS_BSSID; struct join_ibss_props ibss_props = {.wiphy_freq = WIFI_DEFAULT_FREQUENCY, .wiphy_freq_fixed = true, .mac = bssid, .ssid = ssid, .ssid_len = sizeof(ssid)}; for (int device_id = 0; device_id < WIFI_INITIAL_DEVICE_COUNT; device_id++) { mac_addr[5] = device_id; int ret = hwsim80211_create_device(&nlmsg, sock, hwsim_family_id, mac_addr); if (ret < 0) exit(1); char interface[6] = "wlan0"; interface[4] += device_id; if (nl80211_setup_ibss_interface(&nlmsg, sock, nl80211_family_id, interface, &ibss_props, true) < 0) exit(1); } for (int device_id = 0; device_id < WIFI_INITIAL_DEVICE_COUNT; device_id++) { char interface[6] = "wlan0"; interface[4] += device_id; int ret = await_ifla_operstate(&nlmsg, interface, IF_OPER_UP, true); if (ret < 0) exit(1); } close(sock); } static long syz_genetlink_get_family_id(volatile long name, volatile long sock_arg) { int fd = sock_arg; if (fd < 0) { fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); if (fd == -1) { return -1; } } struct nlmsg nlmsg_tmp; int ret = netlink_query_family_id(&nlmsg_tmp, fd, (char*)name, false); if ((int)sock_arg < 0) close(fd); if (ret < 0) { return -1; } return ret; } static void setup_gadgetfs(); static void setup_binderfs(); static void setup_fusectl(); static void sandbox_common_mount_tmpfs(void) { write_file("/proc/sys/fs/mount-max", "100000"); if (mkdir("./syz-tmp", 0777)) exit(1); if (mount("", "./syz-tmp", "tmpfs", 0, NULL)) exit(1); if (mkdir("./syz-tmp/newroot", 0777)) exit(1); if (mkdir("./syz-tmp/newroot/dev", 0700)) exit(1); unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE; if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL)) exit(1); if (mkdir("./syz-tmp/newroot/proc", 0700)) exit(1); if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL)) exit(1); if (mkdir("./syz-tmp/newroot/selinux", 0700)) exit(1); const char* selinux_path = "./syz-tmp/newroot/selinux"; if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) { if (errno != ENOENT) exit(1); if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); } if (mkdir("./syz-tmp/newroot/sys", 0700)) exit(1); if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL)) exit(1); if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mkdir("./syz-tmp/newroot/syz-inputs", 0700)) exit(1); if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL, bind_mount_flags | MS_RDONLY, NULL) && errno != ENOENT) exit(1); if (mkdir("./syz-tmp/pivot", 0777)) exit(1); if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) { if (chdir("./syz-tmp")) exit(1); } else { if (chdir("/")) exit(1); if (umount2("./pivot", MNT_DETACH)) exit(1); } if (chroot("./newroot")) exit(1); if (chdir("/")) exit(1); setup_gadgetfs(); setup_binderfs(); setup_fusectl(); } static void setup_gadgetfs() { if (mkdir("/dev/gadgetfs", 0777)) { } if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) { } } static void setup_fusectl() { if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { } } static void setup_binderfs() { if (mkdir("/dev/binderfs", 0777)) { } if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) { } if (symlink("/dev/binderfs", "./binderfs")) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); if (getppid() == 1) exit(1); struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = (200 << 20); setrlimit(RLIMIT_AS, &rlim); rlim.rlim_cur = rlim.rlim_max = 32 << 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 = 128 << 20; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); if (unshare(CLONE_NEWNS)) { } if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) { } if (unshare(CLONE_NEWIPC)) { } if (unshare(0x02000000)) { } if (unshare(CLONE_NEWUTS)) { } if (unshare(CLONE_SYSVSEM)) { } typedef struct { const char* name; const char* value; } sysctl_t; static const sysctl_t sysctls[] = { {"/proc/sys/kernel/shmmax", "16777216"}, {"/proc/sys/kernel/shmall", "536870912"}, {"/proc/sys/kernel/shmmni", "1024"}, {"/proc/sys/kernel/msgmax", "8192"}, {"/proc/sys/kernel/msgmni", "1024"}, {"/proc/sys/kernel/msgmnb", "1024"}, {"/proc/sys/kernel/sem", "1024 1048576 500 1024"}, }; unsigned i; for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++) write_file(sysctls[i].name, sysctls[i].value); } static int wait_for_loop(int pid) { if (pid < 0) exit(1); int status = 0; while (waitpid(-1, &status, __WALL) != pid) { } return WEXITSTATUS(status); } static void drop_caps(void) { 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)) exit(1); const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE); cap_data[0].effective &= ~drop; cap_data[0].permitted &= ~drop; cap_data[0].inheritable &= ~drop; if (syscall(SYS_capset, &cap_hdr, &cap_data)) exit(1); } static int do_sandbox_none(void) { if (unshare(CLONE_NEWPID)) { } int pid = fork(); if (pid != 0) return wait_for_loop(pid); sandbox_common(); drop_caps(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); initialize_tun(); initialize_wifi_devices(); sandbox_common_mount_tmpfs(); loop(); exit(1); } static const char* setup_usb() { if (chmod("/dev/raw-gadget", 0666)) return "failed to chmod /dev/raw-gadget"; return NULL; } static void setup_sysctl() { int cad_pid = fork(); if (cad_pid < 0) exit(1); if (cad_pid == 0) { for (;;) sleep(100); } char tmppid[32]; snprintf(tmppid, sizeof(tmppid), "%d", cad_pid); struct { const char* name; const char* data; } files[] = { {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"}, {"/proc/sys/kernel/hung_task_check_interval_secs", "20"}, {"/proc/sys/net/core/bpf_jit_kallsyms", "1"}, {"/proc/sys/net/core/bpf_jit_harden", "0"}, {"/proc/sys/kernel/kptr_restrict", "0"}, {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"}, {"/proc/sys/fs/mount-max", "100"}, {"/proc/sys/vm/oom_dump_tasks", "0"}, {"/proc/sys/debug/exception-trace", "0"}, {"/proc/sys/kernel/printk", "7 4 1 3"}, {"/proc/sys/kernel/keys/gc_delay", "1"}, {"/proc/sys/vm/oom_kill_allocating_task", "1"}, {"/proc/sys/kernel/ctrl-alt-del", "0"}, {"/proc/sys/kernel/cad_pid", tmppid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) { } } kill(cad_pid, SIGKILL); while (waitpid(cad_pid, NULL, 0) != cad_pid) ; } uint64_t r[3] = {0xffffffffffffffff, 0x0, 0x0}; void loop(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // socket$nl_generic arguments: [ // domain: const = 0x10 (8 bytes) // type: const = 0x3 (8 bytes) // proto: const = 0x10 (4 bytes) // ] // returns sock_nl_generic res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x10); if (res != -1) r[0] = res; // syz_genetlink_get_family_id$nl80211 arguments: [ // name: ptr[in, buffer] { // buffer: {6e 6c 38 30 32 31 31 00} (length 0x8) // } // fd: sock_nl_generic (resource) // ] // returns nl80211_family_id NONFAILING(memcpy((void*)0x200000000080, "nl80211\000", 8)); res = -1; NONFAILING( res = syz_genetlink_get_family_id(/*name=*/0x200000000080, /*fd=*/-1)); if (res != -1) r[1] = res; // ioctl$sock_SIOCGIFINDEX_80211 arguments: [ // fd: sock (resource) // cmd: const = 0x8933 (4 bytes) // arg: ptr[out, ifreq_dev_t[nl80211_devnames, nl80211_ifindex]] { // ifreq_dev_t[nl80211_devnames, nl80211_ifindex] { // ifr_ifrn: buffer: {77 6c 61 6e 30 00 00 00 00 00 00 00 00 00 00 00} // (length 0x10) elem: nl80211_ifindex (resource) pad = 0x0 (20 bytes) // } // } // ] NONFAILING(memcpy((void*)0x2000000000c0, "wlan0\000\000\000\000\000\000\000\000\000\000\000", 16)); res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x8933, /*arg=*/0x2000000000c0ul); if (res != -1) NONFAILING(r[2] = *(uint32_t*)0x2000000000d0); // sendmsg$NL80211_CMD_SET_INTERFACE arguments: [ // fd: sock_nl_generic (resource) // msg: ptr[in, msghdr_netlink[netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_SET_INTERFACE, nl80211_wdev_payload], // nl80211_policy$set_interface]]] { // msghdr_netlink[netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_SET_INTERFACE, nl80211_wdev_payload], // nl80211_policy$set_interface]] { // addr: nil // addrlen: len = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // vec: ptr[in, iovec[in, netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_SET_INTERFACE, // nl80211_wdev_payload], nl80211_policy$set_interface]]] { // iovec[in, netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_SET_INTERFACE, // nl80211_wdev_payload], nl80211_policy$set_interface]] { // addr: ptr[in, netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_SET_INTERFACE, // nl80211_wdev_payload], nl80211_policy$set_interface]] { // netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_SET_INTERFACE, // nl80211_wdev_payload], nl80211_policy$set_interface] { // len: len = 0x24 (4 bytes) // type: nl80211_family_id (resource) // flags: netlink_msg_flags = 0x5 (2 bytes) // seq: int32 = 0x0 (4 bytes) // pid: int32 = 0x0 (4 bytes) // payload: msg_nl80211_payload[NL80211_CMD_SET_INTERFACE, // nl80211_wdev_payload] { // genl_hdr: genlmsghdr_t[NL80211_CMD_SET_INTERFACE] { // cmd: const = 0x6 (1 bytes) // version: const = 0x0 (1 bytes) // reserved: const = 0x0 (2 bytes) // } // payload: nl80211_wdev_payload { // NL80211_ATTR_IFINDEX: union // optional[nlattr[NL80211_ATTR_IFINDEX, nl80211_ifindex]] // { // val: nlattr_t[const[NL80211_ATTR_IFINDEX, int16], // nl80211_ifindex] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x3 (2 bytes) // payload: nl80211_ifindex (resource) // size: buffer: {} (length 0x0) // } // } // NL80211_ATTR_WDEV: union // optional[nlattr[NL80211_ATTR_WDEV, nl80211_wdev]] { // void: buffer: {} (length 0x0) // } // } // } // attrs: array[nl80211_policy$set_interface] { // union nl80211_policy$set_interface { // NL80211_ATTR_IFTYPE: nlattr_t[const[NL80211_ATTR_IFTYPE, // int16], flags[nl80211_iftype, int32]] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x5 (2 bytes) // payload: nl80211_iftype = 0x3 (4 bytes) // size: buffer: {} (length 0x0) // } // } // } // } // } // len: len = 0x24 (8 bytes) // } // } // vlen: const = 0x1 (8 bytes) // ctrl: const = 0x0 (8 bytes) // ctrllen: const = 0x0 (8 bytes) // f: send_flags = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x0 (8 bytes) // ] NONFAILING(*(uint64_t*)0x200000000100 = 0); NONFAILING(*(uint32_t*)0x200000000108 = 0); NONFAILING(*(uint64_t*)0x200000000110 = 0x200000000140); NONFAILING(*(uint64_t*)0x200000000140 = 0x200000000180); NONFAILING(*(uint32_t*)0x200000000180 = 0x24); NONFAILING(*(uint16_t*)0x200000000184 = r[1]); NONFAILING(*(uint16_t*)0x200000000186 = 5); NONFAILING(*(uint32_t*)0x200000000188 = 0); NONFAILING(*(uint32_t*)0x20000000018c = 0); NONFAILING(*(uint8_t*)0x200000000190 = 6); NONFAILING(*(uint8_t*)0x200000000191 = 0); NONFAILING(*(uint16_t*)0x200000000192 = 0); NONFAILING(*(uint16_t*)0x200000000194 = 8); NONFAILING(*(uint16_t*)0x200000000196 = 3); NONFAILING(*(uint32_t*)0x200000000198 = r[2]); NONFAILING(*(uint16_t*)0x20000000019c = 8); NONFAILING(*(uint16_t*)0x20000000019e = 5); NONFAILING(*(uint32_t*)0x2000000001a0 = 3); NONFAILING(*(uint64_t*)0x200000000148 = 0x24); NONFAILING(*(uint64_t*)0x200000000118 = 1); NONFAILING(*(uint64_t*)0x200000000120 = 0); NONFAILING(*(uint64_t*)0x200000000128 = 0); NONFAILING(*(uint32_t*)0x200000000130 = 0); syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000100ul, /*f=*/0ul); // sendmsg$NL80211_CMD_START_AP arguments: [ // fd: sock_nl_generic (resource) // msg: ptr[in, msghdr_netlink[netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_START_AP, nl80211_wdev_payload], // nl80211_policy$start_ap]]] { // msghdr_netlink[netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_START_AP, nl80211_wdev_payload], // nl80211_policy$start_ap]] { // addr: nil // addrlen: len = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // vec: ptr[in, iovec[in, netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_START_AP, nl80211_wdev_payload], // nl80211_policy$start_ap]]] { // iovec[in, netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_START_AP, nl80211_wdev_payload], // nl80211_policy$start_ap]] { // addr: ptr[in, netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_START_AP, nl80211_wdev_payload], // nl80211_policy$start_ap]] { // netlink_msg_t[nl80211_family_id, // msg_nl80211_payload[NL80211_CMD_START_AP, // nl80211_wdev_payload], nl80211_policy$start_ap] { // len: len = 0x88 (4 bytes) // type: nl80211_family_id (resource) // flags: netlink_msg_flags = 0x5 (2 bytes) // seq: int32 = 0x0 (4 bytes) // pid: int32 = 0x0 (4 bytes) // payload: msg_nl80211_payload[NL80211_CMD_START_AP, // nl80211_wdev_payload] { // genl_hdr: genlmsghdr_t[NL80211_CMD_START_AP] { // cmd: const = 0xf (1 bytes) // version: const = 0x0 (1 bytes) // reserved: const = 0x0 (2 bytes) // } // payload: nl80211_wdev_payload { // NL80211_ATTR_IFINDEX: union // optional[nlattr[NL80211_ATTR_IFINDEX, nl80211_ifindex]] // { // val: nlattr_t[const[NL80211_ATTR_IFINDEX, int16], // nl80211_ifindex] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x3 (2 bytes) // payload: nl80211_ifindex (resource) // size: buffer: {} (length 0x0) // } // } // NL80211_ATTR_WDEV: union // optional[nlattr[NL80211_ATTR_WDEV, nl80211_wdev]] { // void: buffer: {} (length 0x0) // } // } // } // attrs: array[nl80211_policy$start_ap] { // union nl80211_policy$start_ap { // beacon: array[nl80211_policy$beacon] { // union nl80211_policy$beacon { // NL80211_ATTR_BEACON_HEAD: // nlattr_t[const[NL80211_ATTR_BEACON_HEAD, int16], // ieee80211_mgmt_beacon] { // nla_len: offsetof = 0x4c (2 bytes) // nla_type: const = 0xe (2 bytes) // payload: ieee80211_mgmt_beacon { // header: // ieee80211_mgmt_header[IEEE80211_MGMT_FRAME_BEACON] // { // fc: ieee80211_fc[0, 0, // const[IEEE80211_MGMT_FRAME_TYPE, int8:2], // const[IEEE80211_MGMT_FRAME_BEACON, int8:4]] { // version: const = 0x0 (0 bytes) // type: const = 0x0 (0 bytes) // subtype: const = 0x8 (1 bytes) // to_ds: const = 0x0 (0 bytes) // from_ds: const = 0x0 (0 bytes) // more: int8 = 0x0 (0 bytes) // retry: int8 = 0x0 (0 bytes) // power_mgmt: int8 = 0x0 (0 bytes) // more_data: int8 = 0x0 (0 bytes) // protected: const = 0x0 (0 bytes) // order: int8 = 0x0 (1 bytes) // } // duration: ieee80211_duration { // duration: int16 = 0x0 (1 bytes) // nav_flag: const = 0x0 (1 bytes) // } // addr_1: union ieee80211_mac_addr { // broadcast: buffer: {ff ff ff ff ff ff} // (length 0x6) // } // addr_2: union ieee80211_mac_addr { // device_a: // ieee80211_fixed_mac_addr[const[0x0, int8]] { // byte0: const = 0x8 (1 bytes) // byte1: const = 0x2 (1 bytes) // byte2: const = 0x11 (1 bytes) // byte3: const = 0x0 (1 bytes) // byte4: const = 0x0 (1 bytes) // byte5: const = 0x0 (1 bytes) // } // } // addr_3: union ieee80211_bssid { // from_mac: union ieee80211_mac_addr { // device_a: // ieee80211_fixed_mac_addr[const[0x0, int8]] // { // byte0: const = 0x8 (1 bytes) // byte1: const = 0x2 (1 bytes) // byte2: const = 0x11 (1 bytes) // byte3: const = 0x0 (1 bytes) // byte4: const = 0x0 (1 bytes) // byte5: const = 0x0 (1 bytes) // } // } // } // seqno: ieee80211_seq_control { // frag_number: int16 = 0x0 (0 bytes) // seq_number: int16 = 0x0 (2 bytes) // } // ht: union // _ieee80211_mgmt_header[IEEE80211_MGMT_FRAME_BEACON]_ht_wrapper // { // void: buffer: {} (length 0x0) // } // } // timestamp: int64 = 0x0 (8 bytes) // beacon_interval: union // ieee80211_beacon_interval[int16] { // default: const = 0x64 (2 bytes) // } // capability: ieee80211_capabilities = 0x1 (2 // bytes) ssid: union optional[ieee80211_ie_ssid] { // void: buffer: {} (length 0x0) // } // supported_rates: union // optional[ieee80211_ie_supported_rates] { // void: buffer: {} (length 0x0) // } // dsss: union optional[ieee80211_ie_dsss] { // void: buffer: {} (length 0x0) // } // cf: union optional[ieee80211_ie_cf] { // void: buffer: {} (length 0x0) // } // ibss: union optional[ieee80211_ie_ibss] { // void: buffer: {} (length 0x0) // } // tim: union optional[ieee80211_ie_tim] { // void: buffer: {} (length 0x0) // } // chsw: union // optional[ieee80211_ie_channel_switch] { // void: buffer: {} (length 0x0) // } // erp: union optional[ieee80211_ie_erp] { // void: buffer: {} (length 0x0) // } // expt_chsw: union // optional[ieee80211_ie_ext_channel_switch] { // void: buffer: {} (length 0x0) // } // ht: union optional[ieee80211_ie_ht] { // val: // ieee80211_generic_ie[const[WLAN_EID_HT_CAPABILITY, // int8], ieee80211_ht_cap] { // id: const = 0x2d (1 bytes) // len: len = 0x1a (1 bytes) // data: ieee80211_ht_cap { // cap_info: ieee80211_ht_cap_info = 0x300 (2 // bytes) a_mpdu_exponent: int8 = 0x1 (0 // bytes) a_mpdu_min_spacing: int8 = 0x4 (0 // bytes) a_mpdu_reserved: const = 0x0 (1 // bytes) mcs: ieee80211_mcs_info { // rx_bitmask_1: int64 = 0x5 (8 bytes) // rx_bitmask_2: int64 = 0x0 (1 bytes) // reserved: const = 0x0 (1 bytes) // rx_highest_dr: int64 = 0x8 (1 bytes) // reserved_2: const = 0x0 (1 bytes) // tx_set_defined: int64 = 0x1 (0 bytes) // tx_rx_not_eq: int64 = 0x0 (0 bytes) // max_spac_streams: int64 = 0x0 (0 bytes) // uneq_modulation: int64 = 0x0 (0 bytes) // reserved_3: const = 0x0 (4 bytes) // } // extended_ht_cap_info: // ieee80211_ht_ext_cap_info = 0x300 (2 // bytes) tx_BF_cap_info: int32 = 0x3 (4 // bytes) antenna_selection_info: int8 = 0x1 // (1 bytes) // } // } // } // mesh_id: union optional[ieee80211_ie_mesh_id] { // void: buffer: {} (length 0x0) // } // mesh_config: union // optional[ieee80211_ie_mesh_config] { // void: buffer: {} (length 0x0) // } // mesh_chsw: union // optional[ieee80211_ie_mesh_channel_switch] { // val: // ieee80211_generic_ie[const[WLAN_EID_CHAN_SWITCH_PARAM, // int8], // ieee80211_ie_mesh_channel_switch_payload] { // id: const = 0x76 (1 bytes) // len: len = 0x6 (1 bytes) // data: // ieee80211_ie_mesh_channel_switch_payload { // mesh_ttl: int8 = 0x4 (1 bytes) // mesh_flags: int8 = 0x80 (1 bytes) // mesh_reason: int16 = 0x7 (2 bytes) // meash_pre_value: int16 = 0x6 (2 bytes) // } // } // } // vendor: // array[ieee80211_generic_ie[const[WLAN_EID_VENDOR_SPECIFIC, // int8], array[int8, 6:255]]] { // } // } // size: buffer: {} (length 0x0) // } // } // } // } // union nl80211_policy$start_ap { // chandef_params: array[nl80211_policy$chandef_params] { // union nl80211_policy$chandef_params { // NL80211_ATTR_WIPHY_FREQ: // nlattr_t[const[NL80211_ATTR_WIPHY_FREQ, int16], // ieee80211_frequency_mhz[int32]] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x26 (2 bytes) // payload: union ieee80211_frequency_mhz[int32] { // default: const = 0x96c (4 bytes) // } // size: buffer: {} (length 0x0) // } // } // union nl80211_policy$chandef_params { // NL80211_ATTR_CHANNEL_WIDTH: // nlattr_t[const[NL80211_ATTR_CHANNEL_WIDTH, int16], // flags[nl80211_channel_widths, int32]] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x9f (2 bytes) // payload: nl80211_channel_widths = 0x7 (4 bytes) // size: buffer: {} (length 0x0) // } // } // } // } // union nl80211_policy$start_ap { // NL80211_ATTR_BEACON_INTERVAL: // nlattr_t[const[NL80211_ATTR_BEACON_INTERVAL, int16], // ieee80211_beacon_interval[int32]] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0xc (2 bytes) // payload: union ieee80211_beacon_interval[int32] { // default: const = 0x64 (4 bytes) // } // size: buffer: {} (length 0x0) // } // } // union nl80211_policy$start_ap { // NL80211_ATTR_DTIM_PERIOD: // nlattr_t[const[NL80211_ATTR_DTIM_PERIOD, int16], int32] // { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0xd (2 bytes) // payload: int32 = 0x0 (4 bytes) // size: buffer: {} (length 0x0) // } // } // } // } // } // len: len = 0x88 (8 bytes) // } // } // vlen: const = 0x1 (8 bytes) // ctrl: const = 0x0 (8 bytes) // ctrllen: const = 0x0 (8 bytes) // f: send_flags = 0x40005 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x0 (8 bytes) // ] NONFAILING(*(uint64_t*)0x2000000001c0 = 0); NONFAILING(*(uint32_t*)0x2000000001c8 = 0); NONFAILING(*(uint64_t*)0x2000000001d0 = 0x200000000200); NONFAILING(*(uint64_t*)0x200000000200 = 0x2000000002c0); NONFAILING(*(uint32_t*)0x2000000002c0 = 0x88); NONFAILING(*(uint16_t*)0x2000000002c4 = r[1]); NONFAILING(*(uint16_t*)0x2000000002c6 = 5); NONFAILING(*(uint32_t*)0x2000000002c8 = 0); NONFAILING(*(uint32_t*)0x2000000002cc = 0); NONFAILING(*(uint8_t*)0x2000000002d0 = 0xf); NONFAILING(*(uint8_t*)0x2000000002d1 = 0); NONFAILING(*(uint16_t*)0x2000000002d2 = 0); NONFAILING(*(uint16_t*)0x2000000002d4 = 8); NONFAILING(*(uint16_t*)0x2000000002d6 = 3); NONFAILING(*(uint32_t*)0x2000000002d8 = r[2]); NONFAILING(*(uint16_t*)0x2000000002dc = 0x4c); NONFAILING(*(uint16_t*)0x2000000002de = 0xe); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e0, 0, 0, 2)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e0, 0, 2, 2)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e0, 8, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 0, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 1, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 2, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 4, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 5, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 6, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 7, 1)); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x2000000002e2, 0, 0, 15)); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x2000000002e3, 0, 7, 1)); NONFAILING(memset((void*)0x2000000002e4, 255, 6)); NONFAILING(*(uint8_t*)0x2000000002ea = 8); NONFAILING(*(uint8_t*)0x2000000002eb = 2); NONFAILING(*(uint8_t*)0x2000000002ec = 0x11); NONFAILING(*(uint8_t*)0x2000000002ed = 0); NONFAILING(*(uint8_t*)0x2000000002ee = 0); NONFAILING(*(uint8_t*)0x2000000002ef = 0); NONFAILING(*(uint8_t*)0x2000000002f0 = 8); NONFAILING(*(uint8_t*)0x2000000002f1 = 2); NONFAILING(*(uint8_t*)0x2000000002f2 = 0x11); NONFAILING(*(uint8_t*)0x2000000002f3 = 0); NONFAILING(*(uint8_t*)0x2000000002f4 = 0); NONFAILING(*(uint8_t*)0x2000000002f5 = 0); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x2000000002f6, 0, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x2000000002f6, 0, 4, 12)); NONFAILING(*(uint64_t*)0x2000000002f8 = 0); NONFAILING(*(uint16_t*)0x200000000300 = 0x64); NONFAILING(*(uint16_t*)0x200000000302 = 1); NONFAILING(*(uint8_t*)0x200000000304 = 0x2d); NONFAILING(*(uint8_t*)0x200000000305 = 0x1a); NONFAILING(*(uint16_t*)0x200000000306 = 0x300); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000308, 1, 0, 2)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000308, 4, 2, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000308, 0, 5, 3)); NONFAILING(*(uint64_t*)0x200000000309 = 5); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000311, 0, 0, 13)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000312, 0, 5, 3)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000313, 8, 0, 10)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000314, 0, 2, 6)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000315, 1, 0, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000315, 0, 1, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000315, 0, 2, 2)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000315, 0, 4, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000315, 0, 5, 27)); NONFAILING(*(uint16_t*)0x200000000319 = 0x300); NONFAILING(*(uint32_t*)0x20000000031b = 3); NONFAILING(*(uint8_t*)0x20000000031f = 1); NONFAILING(*(uint8_t*)0x200000000320 = 0x76); NONFAILING(*(uint8_t*)0x200000000321 = 6); NONFAILING(*(uint8_t*)0x200000000322 = 4); NONFAILING(*(uint8_t*)0x200000000323 = 0x80); NONFAILING(*(uint16_t*)0x200000000324 = 7); NONFAILING(*(uint16_t*)0x200000000326 = 6); NONFAILING(*(uint16_t*)0x200000000328 = 8); NONFAILING(*(uint16_t*)0x20000000032a = 0x26); NONFAILING(*(uint32_t*)0x20000000032c = 0x96c); NONFAILING(*(uint16_t*)0x200000000330 = 8); NONFAILING(*(uint16_t*)0x200000000332 = 0x9f); NONFAILING(*(uint32_t*)0x200000000334 = 7); NONFAILING(*(uint16_t*)0x200000000338 = 8); NONFAILING(*(uint16_t*)0x20000000033a = 0xc); NONFAILING(*(uint32_t*)0x20000000033c = 0x64); NONFAILING(*(uint16_t*)0x200000000340 = 8); NONFAILING(*(uint16_t*)0x200000000342 = 0xd); NONFAILING(*(uint32_t*)0x200000000344 = 0); NONFAILING(*(uint64_t*)0x200000000208 = 0x88); NONFAILING(*(uint64_t*)0x2000000001d8 = 1); NONFAILING(*(uint64_t*)0x2000000001e0 = 0); NONFAILING(*(uint64_t*)0x2000000001e8 = 0); NONFAILING(*(uint32_t*)0x2000000001f0 = 0x40005); syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x2000000001c0ul, /*f=*/0ul); } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); setup_sysctl(); const char* reason; (void)reason; if ((reason = setup_usb())) printf("the reproducer may not work as expected: USB injection setup " "failed: %s\n", reason); install_segv_handler(); do_sandbox_none(); return 0; }