// https://syzkaller.appspot.com/bug?id=908c5dd7cae0eac967f730cf8085220a322dcbff // 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 static unsigned long long procid; 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 void netlink_nest(struct nlmsg* nlmsg, int typ) { struct nlattr* attr = (struct nlattr*)nlmsg->pos; attr->nla_type = typ; nlmsg->pos += sizeof(*attr); nlmsg->nested[nlmsg->nesting++] = attr; } static void netlink_done(struct nlmsg* nlmsg) { struct nlattr* attr = nlmsg->nested[--nlmsg->nesting]; attr->nla_len = nlmsg->pos - (char*)attr; } static int netlink_send_ext(struct nlmsg* nlmsg, int sock, uint16_t reply_type, int* reply_len) { 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; unsigned n = sendto(sock, nlmsg->buf, hdr->nlmsg_len, 0, (struct sockaddr*)&addr, sizeof(addr)); if (n != hdr->nlmsg_len) exit(1); n = recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0); if (reply_len) *reply_len = 0; if (hdr->nlmsg_type == NLMSG_DONE) return 0; if (n < sizeof(struct nlmsghdr)) exit(1); if (reply_len && hdr->nlmsg_type == reply_type) { *reply_len = n; return 0; } if (n < sizeof(struct nlmsghdr) + sizeof(struct nlmsgerr)) exit(1); if (hdr->nlmsg_type != NLMSG_ERROR) exit(1); return ((struct nlmsgerr*)(hdr + 1))->error; } static int netlink_send(struct nlmsg* nlmsg, int sock) { return netlink_send_ext(nlmsg, sock, 0, NULL); } static int netlink_query_family_id(struct nlmsg* nlmsg, int sock, const char* family_name) { 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); 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) { return -1; } recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0); return id; } static int netlink_next_msg(struct nlmsg* nlmsg, unsigned int offset, unsigned int total_len) { struct nlmsghdr* hdr = (struct nlmsghdr*)(nlmsg->buf + offset); if (offset == total_len || offset + hdr->nlmsg_len > total_len) return -1; return hdr->nlmsg_len; } static void netlink_add_device_impl(struct nlmsg* nlmsg, const char* type, const char* name) { struct ifinfomsg hdr; memset(&hdr, 0, sizeof(hdr)); netlink_init(nlmsg, RTM_NEWLINK, NLM_F_EXCL | NLM_F_CREATE, &hdr, sizeof(hdr)); if (name) netlink_attr(nlmsg, IFLA_IFNAME, name, strlen(name)); netlink_nest(nlmsg, IFLA_LINKINFO); netlink_attr(nlmsg, IFLA_INFO_KIND, type, strlen(type)); } static void netlink_add_device(struct nlmsg* nlmsg, int sock, const char* type, const char* name) { netlink_add_device_impl(nlmsg, type, name); netlink_done(nlmsg); int err = netlink_send(nlmsg, sock); (void)err; } static void netlink_add_veth(struct nlmsg* nlmsg, int sock, const char* name, const char* peer) { netlink_add_device_impl(nlmsg, "veth", name); netlink_nest(nlmsg, IFLA_INFO_DATA); netlink_nest(nlmsg, VETH_INFO_PEER); nlmsg->pos += sizeof(struct ifinfomsg); netlink_attr(nlmsg, IFLA_IFNAME, peer, strlen(peer)); netlink_done(nlmsg); netlink_done(nlmsg); netlink_done(nlmsg); int err = netlink_send(nlmsg, sock); (void)err; } static void netlink_add_hsr(struct nlmsg* nlmsg, int sock, const char* name, const char* slave1, const char* slave2) { netlink_add_device_impl(nlmsg, "hsr", name); netlink_nest(nlmsg, IFLA_INFO_DATA); int ifindex1 = if_nametoindex(slave1); netlink_attr(nlmsg, IFLA_HSR_SLAVE1, &ifindex1, sizeof(ifindex1)); int ifindex2 = if_nametoindex(slave2); netlink_attr(nlmsg, IFLA_HSR_SLAVE2, &ifindex2, sizeof(ifindex2)); netlink_done(nlmsg); netlink_done(nlmsg); int err = netlink_send(nlmsg, sock); (void)err; } static void netlink_add_linked(struct nlmsg* nlmsg, int sock, const char* type, const char* name, const char* link) { netlink_add_device_impl(nlmsg, type, name); netlink_done(nlmsg); int ifindex = if_nametoindex(link); netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex)); int err = netlink_send(nlmsg, sock); (void)err; } static void netlink_add_vlan(struct nlmsg* nlmsg, int sock, const char* name, const char* link, uint16_t id, uint16_t proto) { netlink_add_device_impl(nlmsg, "vlan", name); netlink_nest(nlmsg, IFLA_INFO_DATA); netlink_attr(nlmsg, IFLA_VLAN_ID, &id, sizeof(id)); netlink_attr(nlmsg, IFLA_VLAN_PROTOCOL, &proto, sizeof(proto)); netlink_done(nlmsg); netlink_done(nlmsg); int ifindex = if_nametoindex(link); netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex)); int err = netlink_send(nlmsg, sock); (void)err; } static void netlink_add_macvlan(struct nlmsg* nlmsg, int sock, const char* name, const char* link) { netlink_add_device_impl(nlmsg, "macvlan", name); netlink_nest(nlmsg, IFLA_INFO_DATA); uint32_t mode = MACVLAN_MODE_BRIDGE; netlink_attr(nlmsg, IFLA_MACVLAN_MODE, &mode, sizeof(mode)); netlink_done(nlmsg); netlink_done(nlmsg); int ifindex = if_nametoindex(link); netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex)); int err = netlink_send(nlmsg, sock); (void)err; } static void netlink_add_geneve(struct nlmsg* nlmsg, int sock, const char* name, uint32_t vni, struct in_addr* addr4, struct in6_addr* addr6) { netlink_add_device_impl(nlmsg, "geneve", name); netlink_nest(nlmsg, IFLA_INFO_DATA); netlink_attr(nlmsg, IFLA_GENEVE_ID, &vni, sizeof(vni)); if (addr4) netlink_attr(nlmsg, IFLA_GENEVE_REMOTE, addr4, sizeof(*addr4)); if (addr6) netlink_attr(nlmsg, IFLA_GENEVE_REMOTE6, addr6, sizeof(*addr6)); netlink_done(nlmsg); netlink_done(nlmsg); int err = netlink_send(nlmsg, sock); (void)err; } #define IFLA_IPVLAN_FLAGS 2 #define IPVLAN_MODE_L3S 2 #undef IPVLAN_F_VEPA #define IPVLAN_F_VEPA 2 static void netlink_add_ipvlan(struct nlmsg* nlmsg, int sock, const char* name, const char* link, uint16_t mode, uint16_t flags) { netlink_add_device_impl(nlmsg, "ipvlan", name); netlink_nest(nlmsg, IFLA_INFO_DATA); netlink_attr(nlmsg, IFLA_IPVLAN_MODE, &mode, sizeof(mode)); netlink_attr(nlmsg, IFLA_IPVLAN_FLAGS, &flags, sizeof(flags)); netlink_done(nlmsg); netlink_done(nlmsg); int ifindex = if_nametoindex(link); netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex)); int err = netlink_send(nlmsg, sock); (void)err; } 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); (void)err; } 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)); (void)err; } 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)); (void)err; } 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); (void)err; } 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 = 240; 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 DEVLINK_FAMILY_NAME "devlink" #define DEVLINK_CMD_PORT_GET 5 #define DEVLINK_ATTR_BUS_NAME 1 #define DEVLINK_ATTR_DEV_NAME 2 #define DEVLINK_ATTR_NETDEV_NAME 7 static struct nlmsg nlmsg2; static void initialize_devlink_ports(const char* bus_name, const char* dev_name, const char* netdev_prefix) { struct genlmsghdr genlhdr; int len, total_len, id, err, offset; uint16_t netdev_index; int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); if (sock == -1) exit(1); int rtsock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (rtsock == -1) exit(1); id = netlink_query_family_id(&nlmsg, sock, DEVLINK_FAMILY_NAME); if (id == -1) goto error; memset(&genlhdr, 0, sizeof(genlhdr)); genlhdr.cmd = DEVLINK_CMD_PORT_GET; netlink_init(&nlmsg, id, NLM_F_DUMP, &genlhdr, sizeof(genlhdr)); netlink_attr(&nlmsg, DEVLINK_ATTR_BUS_NAME, bus_name, strlen(bus_name) + 1); netlink_attr(&nlmsg, DEVLINK_ATTR_DEV_NAME, dev_name, strlen(dev_name) + 1); err = netlink_send_ext(&nlmsg, sock, id, &total_len); if (err < 0) { goto error; } offset = 0; netdev_index = 0; while ((len = netlink_next_msg(&nlmsg, offset, total_len)) != -1) { struct nlattr* attr = (struct nlattr*)(nlmsg.buf + offset + NLMSG_HDRLEN + NLMSG_ALIGN(sizeof(genlhdr))); for (; (char*)attr < nlmsg.buf + offset + len; attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) { if (attr->nla_type == DEVLINK_ATTR_NETDEV_NAME) { char* port_name; char netdev_name[IFNAMSIZ]; port_name = (char*)(attr + 1); snprintf(netdev_name, sizeof(netdev_name), "%s%d", netdev_prefix, netdev_index); netlink_device_change(&nlmsg2, rtsock, port_name, true, 0, 0, 0, netdev_name); break; } } offset += len; netdev_index++; } error: close(rtsock); close(sock); } #define DEV_IPV4 "172.20.20.%d" #define DEV_IPV6 "fe80::%02x" #define DEV_MAC 0x00aaaaaaaaaa static void netdevsim_add(unsigned int addr, unsigned int port_count) { char buf[16]; sprintf(buf, "%u %u", addr, port_count); if (write_file("/sys/bus/netdevsim/new_device", buf)) { snprintf(buf, sizeof(buf), "netdevsim%d", addr); initialize_devlink_ports("netdevsim", buf, "netdevsim"); } } #define WG_GENL_NAME "wireguard" enum wg_cmd { WG_CMD_GET_DEVICE, WG_CMD_SET_DEVICE, }; enum wgdevice_attribute { WGDEVICE_A_UNSPEC, WGDEVICE_A_IFINDEX, WGDEVICE_A_IFNAME, WGDEVICE_A_PRIVATE_KEY, WGDEVICE_A_PUBLIC_KEY, WGDEVICE_A_FLAGS, WGDEVICE_A_LISTEN_PORT, WGDEVICE_A_FWMARK, WGDEVICE_A_PEERS, }; enum wgpeer_attribute { WGPEER_A_UNSPEC, WGPEER_A_PUBLIC_KEY, WGPEER_A_PRESHARED_KEY, WGPEER_A_FLAGS, WGPEER_A_ENDPOINT, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, WGPEER_A_LAST_HANDSHAKE_TIME, WGPEER_A_RX_BYTES, WGPEER_A_TX_BYTES, WGPEER_A_ALLOWEDIPS, WGPEER_A_PROTOCOL_VERSION, }; enum wgallowedip_attribute { WGALLOWEDIP_A_UNSPEC, WGALLOWEDIP_A_FAMILY, WGALLOWEDIP_A_IPADDR, WGALLOWEDIP_A_CIDR_MASK, }; static void netlink_wireguard_setup(void) { const char ifname_a[] = "wg0"; const char ifname_b[] = "wg1"; const char ifname_c[] = "wg2"; const char private_a[] = "\xa0\x5c\xa8\x4f\x6c\x9c\x8e\x38\x53\xe2\xfd\x7a" "\x70\xae\x0f\xb2\x0f\xa1\x52\x60\x0c\xb0\x08\x45" "\x17\x4f\x08\x07\x6f\x8d\x78\x43"; const char private_b[] = "\xb0\x80\x73\xe8\xd4\x4e\x91\xe3\xda\x92\x2c\x22" "\x43\x82\x44\xbb\x88\x5c\x69\xe2\x69\xc8\xe9\xd8" "\x35\xb1\x14\x29\x3a\x4d\xdc\x6e"; const char private_c[] = "\xa0\xcb\x87\x9a\x47\xf5\xbc\x64\x4c\x0e\x69\x3f" "\xa6\xd0\x31\xc7\x4a\x15\x53\xb6\xe9\x01\xb9\xff" "\x2f\x51\x8c\x78\x04\x2f\xb5\x42"; const char public_a[] = "\x97\x5c\x9d\x81\xc9\x83\xc8\x20\x9e\xe7\x81\x25\x4b" "\x89\x9f\x8e\xd9\x25\xae\x9f\x09\x23\xc2\x3c\x62\xf5" "\x3c\x57\xcd\xbf\x69\x1c"; const char public_b[] = "\xd1\x73\x28\x99\xf6\x11\xcd\x89\x94\x03\x4d\x7f\x41" "\x3d\xc9\x57\x63\x0e\x54\x93\xc2\x85\xac\xa4\x00\x65" "\xcb\x63\x11\xbe\x69\x6b"; const char public_c[] = "\xf4\x4d\xa3\x67\xa8\x8e\xe6\x56\x4f\x02\x02\x11\x45" "\x67\x27\x08\x2f\x5c\xeb\xee\x8b\x1b\xf5\xeb\x73\x37" "\x34\x1b\x45\x9b\x39\x22"; const uint16_t listen_a = 20001; const uint16_t listen_b = 20002; const uint16_t listen_c = 20003; const uint16_t af_inet = AF_INET; const uint16_t af_inet6 = AF_INET6; const struct sockaddr_in endpoint_b_v4 = { .sin_family = AF_INET, .sin_port = htons(listen_b), .sin_addr = {htonl(INADDR_LOOPBACK)}}; const struct sockaddr_in endpoint_c_v4 = { .sin_family = AF_INET, .sin_port = htons(listen_c), .sin_addr = {htonl(INADDR_LOOPBACK)}}; struct sockaddr_in6 endpoint_a_v6 = {.sin6_family = AF_INET6, .sin6_port = htons(listen_a)}; endpoint_a_v6.sin6_addr = in6addr_loopback; struct sockaddr_in6 endpoint_c_v6 = {.sin6_family = AF_INET6, .sin6_port = htons(listen_c)}; endpoint_c_v6.sin6_addr = in6addr_loopback; const struct in_addr first_half_v4 = {0}; const struct in_addr second_half_v4 = {(uint32_t)htonl(128 << 24)}; const struct in6_addr first_half_v6 = {{{0}}}; const struct in6_addr second_half_v6 = {{{0x80}}}; const uint8_t half_cidr = 1; const uint16_t persistent_keepalives[] = {1, 3, 7, 9, 14, 19}; struct genlmsghdr genlhdr = {.cmd = WG_CMD_SET_DEVICE, .version = 1}; int sock; int id, err; sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); if (sock == -1) { return; } id = netlink_query_family_id(&nlmsg, sock, WG_GENL_NAME); if (id == -1) goto error; netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_a, strlen(ifname_a) + 1); netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_a, 32); netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_a, 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_b, 32); netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_b_v4, sizeof(endpoint_b_v4)); netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, &persistent_keepalives[0], 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4, sizeof(first_half_v4)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6, sizeof(first_half_v6)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_c, 32); netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_c_v6, sizeof(endpoint_c_v6)); netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, &persistent_keepalives[1], 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4, sizeof(second_half_v4)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6, sizeof(second_half_v6)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); err = netlink_send(&nlmsg, sock); if (err < 0) { } netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_b, strlen(ifname_b) + 1); netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_b, 32); netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_b, 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_a, 32); netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_a_v6, sizeof(endpoint_a_v6)); netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, &persistent_keepalives[2], 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4, sizeof(first_half_v4)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6, sizeof(first_half_v6)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_c, 32); netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_c_v4, sizeof(endpoint_c_v4)); netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, &persistent_keepalives[3], 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4, sizeof(second_half_v4)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6, sizeof(second_half_v6)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); err = netlink_send(&nlmsg, sock); if (err < 0) { } netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_c, strlen(ifname_c) + 1); netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_c, 32); netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_c, 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_a, 32); netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_a_v6, sizeof(endpoint_a_v6)); netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, &persistent_keepalives[4], 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4, sizeof(first_half_v4)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6, sizeof(first_half_v6)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_b, 32); netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_b_v4, sizeof(endpoint_b_v4)); netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL, &persistent_keepalives[5], 2); netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4, sizeof(second_half_v4)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_nest(&nlmsg, NLA_F_NESTED | 0); netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2); netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6, sizeof(second_half_v6)); netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); netlink_done(&nlmsg); err = netlink_send(&nlmsg, sock); if (err < 0) { } error: close(sock); } static void initialize_netdevices(void) { char netdevsim[16]; sprintf(netdevsim, "netdevsim%d", (int)procid); struct { const char* type; const char* dev; } devtypes[] = { {"ip6gretap", "ip6gretap0"}, {"bridge", "bridge0"}, {"vcan", "vcan0"}, {"bond", "bond0"}, {"team", "team0"}, {"dummy", "dummy0"}, {"nlmon", "nlmon0"}, {"caif", "caif0"}, {"batadv", "batadv0"}, {"vxcan", "vxcan1"}, {"netdevsim", netdevsim}, {"veth", 0}, {"xfrm", "xfrm0"}, {"wireguard", "wg0"}, {"wireguard", "wg1"}, {"wireguard", "wg2"}, }; const char* devmasters[] = {"bridge", "bond", "team", "batadv"}; struct { const char* name; int macsize; bool noipv6; } devices[] = { {"lo", ETH_ALEN}, {"sit0", 0}, {"bridge0", ETH_ALEN}, {"vcan0", 0, true}, {"tunl0", 0}, {"gre0", 0}, {"gretap0", ETH_ALEN}, {"ip_vti0", 0}, {"ip6_vti0", 0}, {"ip6tnl0", 0}, {"ip6gre0", 0}, {"ip6gretap0", ETH_ALEN}, {"erspan0", ETH_ALEN}, {"bond0", ETH_ALEN}, {"veth0", ETH_ALEN}, {"veth1", ETH_ALEN}, {"team0", ETH_ALEN}, {"veth0_to_bridge", ETH_ALEN}, {"veth1_to_bridge", ETH_ALEN}, {"veth0_to_bond", ETH_ALEN}, {"veth1_to_bond", ETH_ALEN}, {"veth0_to_team", ETH_ALEN}, {"veth1_to_team", ETH_ALEN}, {"veth0_to_hsr", ETH_ALEN}, {"veth1_to_hsr", ETH_ALEN}, {"hsr0", 0}, {"dummy0", ETH_ALEN}, {"nlmon0", 0}, {"vxcan0", 0, true}, {"vxcan1", 0, true}, {"caif0", ETH_ALEN}, {"batadv0", ETH_ALEN}, {netdevsim, ETH_ALEN}, {"xfrm0", ETH_ALEN}, {"veth0_virt_wifi", ETH_ALEN}, {"veth1_virt_wifi", ETH_ALEN}, {"virt_wifi0", ETH_ALEN}, {"veth0_vlan", ETH_ALEN}, {"veth1_vlan", ETH_ALEN}, {"vlan0", ETH_ALEN}, {"vlan1", ETH_ALEN}, {"macvlan0", ETH_ALEN}, {"macvlan1", ETH_ALEN}, {"ipvlan0", ETH_ALEN}, {"ipvlan1", ETH_ALEN}, {"veth0_macvtap", ETH_ALEN}, {"veth1_macvtap", ETH_ALEN}, {"macvtap0", ETH_ALEN}, {"macsec0", ETH_ALEN}, {"veth0_to_batadv", ETH_ALEN}, {"veth1_to_batadv", ETH_ALEN}, {"batadv_slave_0", ETH_ALEN}, {"batadv_slave_1", ETH_ALEN}, {"geneve0", ETH_ALEN}, {"geneve1", ETH_ALEN}, {"wg0", 0}, {"wg1", 0}, {"wg2", 0}, }; int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (sock == -1) exit(1); unsigned i; for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++) netlink_add_device(&nlmsg, sock, devtypes[i].type, devtypes[i].dev); for (i = 0; i < sizeof(devmasters) / (sizeof(devmasters[0])); i++) { char master[32], slave0[32], veth0[32], slave1[32], veth1[32]; sprintf(slave0, "%s_slave_0", devmasters[i]); sprintf(veth0, "veth0_to_%s", devmasters[i]); netlink_add_veth(&nlmsg, sock, slave0, veth0); sprintf(slave1, "%s_slave_1", devmasters[i]); sprintf(veth1, "veth1_to_%s", devmasters[i]); netlink_add_veth(&nlmsg, sock, slave1, veth1); sprintf(master, "%s0", devmasters[i]); netlink_device_change(&nlmsg, sock, slave0, false, master, 0, 0, NULL); netlink_device_change(&nlmsg, sock, slave1, false, master, 0, 0, NULL); } netlink_device_change(&nlmsg, sock, "bridge_slave_0", true, 0, 0, 0, NULL); netlink_device_change(&nlmsg, sock, "bridge_slave_1", true, 0, 0, 0, NULL); netlink_add_veth(&nlmsg, sock, "hsr_slave_0", "veth0_to_hsr"); netlink_add_veth(&nlmsg, sock, "hsr_slave_1", "veth1_to_hsr"); netlink_add_hsr(&nlmsg, sock, "hsr0", "hsr_slave_0", "hsr_slave_1"); netlink_device_change(&nlmsg, sock, "hsr_slave_0", true, 0, 0, 0, NULL); netlink_device_change(&nlmsg, sock, "hsr_slave_1", true, 0, 0, 0, NULL); netlink_add_veth(&nlmsg, sock, "veth0_virt_wifi", "veth1_virt_wifi"); netlink_add_linked(&nlmsg, sock, "virt_wifi", "virt_wifi0", "veth1_virt_wifi"); netlink_add_veth(&nlmsg, sock, "veth0_vlan", "veth1_vlan"); netlink_add_vlan(&nlmsg, sock, "vlan0", "veth0_vlan", 0, htons(ETH_P_8021Q)); netlink_add_vlan(&nlmsg, sock, "vlan1", "veth0_vlan", 1, htons(ETH_P_8021AD)); netlink_add_macvlan(&nlmsg, sock, "macvlan0", "veth1_vlan"); netlink_add_macvlan(&nlmsg, sock, "macvlan1", "veth1_vlan"); netlink_add_ipvlan(&nlmsg, sock, "ipvlan0", "veth0_vlan", IPVLAN_MODE_L2, 0); netlink_add_ipvlan(&nlmsg, sock, "ipvlan1", "veth0_vlan", IPVLAN_MODE_L3S, IPVLAN_F_VEPA); netlink_add_veth(&nlmsg, sock, "veth0_macvtap", "veth1_macvtap"); netlink_add_linked(&nlmsg, sock, "macvtap", "macvtap0", "veth0_macvtap"); netlink_add_linked(&nlmsg, sock, "macsec", "macsec0", "veth1_macvtap"); char addr[32]; sprintf(addr, DEV_IPV4, 14 + 10); struct in_addr geneve_addr4; if (inet_pton(AF_INET, addr, &geneve_addr4) <= 0) exit(1); struct in6_addr geneve_addr6; if (inet_pton(AF_INET6, "fc00::01", &geneve_addr6) <= 0) exit(1); netlink_add_geneve(&nlmsg, sock, "geneve0", 0, &geneve_addr4, 0); netlink_add_geneve(&nlmsg, sock, "geneve1", 1, 0, &geneve_addr6); netdevsim_add((int)procid, 4); netlink_wireguard_setup(); for (i = 0; i < sizeof(devices) / (sizeof(devices[0])); i++) { char addr[32]; sprintf(addr, DEV_IPV4, i + 10); netlink_add_addr4(&nlmsg, sock, devices[i].name, addr); if (!devices[i].noipv6) { sprintf(addr, DEV_IPV6, i + 10); netlink_add_addr6(&nlmsg, sock, devices[i].name, addr); } uint64_t macaddr = DEV_MAC + ((i + 10ull) << 40); netlink_device_change(&nlmsg, sock, devices[i].name, true, 0, &macaddr, devices[i].macsize, NULL); } close(sock); } static void initialize_netdevices_init(void) { int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (sock == -1) exit(1); struct { const char* type; int macsize; bool noipv6; bool noup; } devtypes[] = { {"nr", 7, true}, {"rose", 5, true, true}, }; unsigned i; for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++) { char dev[32], addr[32]; sprintf(dev, "%s%d", devtypes[i].type, (int)procid); sprintf(addr, "172.30.%d.%d", i, (int)procid + 1); netlink_add_addr4(&nlmsg, sock, dev, addr); if (!devtypes[i].noipv6) { sprintf(addr, "fe88::%02x:%02x", i, (int)procid + 1); netlink_add_addr6(&nlmsg, sock, dev, addr); } int macsize = devtypes[i].macsize; uint64_t macaddr = 0xbbbbbb + ((unsigned long long)i << (8 * (macsize - 2))) + (procid << (8 * (macsize - 1))); netlink_device_change(&nlmsg, sock, dev, !devtypes[i].noup, 0, &macaddr, macsize, NULL); } close(sock); } static void setup_common() { if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setsid(); 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 = 0; 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); setup_common(); sandbox_common(); drop_caps(); initialize_netdevices_init(); if (unshare(CLONE_NEWNET)) { } initialize_tun(); initialize_netdevices(); loop(); exit(1); } #ifndef __NR_bpf #define __NR_bpf 321 #endif uint64_t r[1] = {0xffffffffffffffff}; void loop(void) { intptr_t res = 0; *(uint32_t*)0x20000200 = 0xc; *(uint32_t*)0x20000204 = 0xe; *(uint64_t*)0x20000208 = 0x20000b00; memcpy( (void*)0x20000b00, "\xb7\x02\x00\x00\x2d\x00\x00\x00\xbf\xa3\x00\x00\x00\x00\x00\x00\x07\x03" "\x00\x00\x00\xfe\xff\xff\x7a\x0a\xf0\xff\xf8\xff\xff\xff\x79\xa4\xf0\xff" "\x00\x00\x00\x00\xb7\x06\x00\x00\xff\xff\xff\xff\x2d\x64\x05\x00\x00\x00" "\x00\x00\x65\x04\x04\x00\x01\x00\x00\x00\x04\x04\x00\x00\x01\x00\x7d\x60" "\xb7\x03\x00\x00\x00\x00\x00\x00\x6a\x0a\x00\xfe\x00\x00\x00\x00\x85\x00" "\x00\x00\x0d\x00\x00\x00\xb7\x00\x00\x00\x00\x00\x00\x00\x95\x00\x00\x00" "\x00\x00\x00\x00\x56\xce\x36\xb6\x8b\x0f\x33\x4d\x6c\x37\xd0\x30\x57\xc9" "\x00\x00\x86\x6f\x55\xe3\x37\x6e\x4a\x82\x07\x1d\x78\x27\xaf\x04\xf8\x42" "\x6e\x5b\x0e\xb4\x64\x21\x72\x79\x7f\xc0\x86\xf4\x53\x33\x24\xf8\x71\xd9" "\x47\x68\xe2\x58\x51\xd3\x16\x2c\x1b\xde\x85\x6e\xd6\x9b\x67\x3e\x5b\x8d" "\x86\x1f\xf2\x07\xc0\xeb\x4b\x60\xa8\x2f\xc3\xc0\xe2\x08\x5d\x6a\xdd\x58" "\x93\x2f\x23\x5e\xc2\xa3\xd3\xaf\x08\x05\xf2\x31\xeb\x84\x74\x95\x3f\x64" "\x0e\x3d\x49\x0c\xdc\x04\x48\xec\xf2\x1b\x20\x57\x68\xe3\x4a\xb9\x5b\x6e" "\xf8\x20\x39\x8c\x1b\xa4\xb8\x1c\xee\x47\xa9\x8d\x7d\xf3\x76\x8d\xb9\xbd" "\x08\x46\x23\xca\x56\xc8\x2b\x20\x5e\x5d\x4d\x90\x62\x8a\xea\xcb\xd4\x65" "\x4e\xb4\x37\x18\x61\xa9\x8b\xb8\xfc\x0f\xb8\x9f\x8a\xbf\x8e\x94\xd4\x42" "\x94\xd9\x92\x9b\x31\x8c\x98\x9b\xeb\xd2\xf9\x92\x11\x20\x24\x65\x08\x92" "\xc2\xe2\x5b\x38\xf9\xca\xc8\xfe\xa1\xa8\xc4\x71\x2b\x53\x30\x6c\x00\xa6" "\x49\xa6\x27\x20\xcd\x66\x1d\x21\xab\x5d\x7a\x8b\x9f\x97\x4b\x4f\x5d\xa4" "\x86\x2c\x01\xb9\xe6\x0f\x93\xd4\xf2\xa4\x92\xbb\xdd\x99\x61\x66\xc2\xb4" "\xcb\xe5\xf2\x79\xfe\x77\x9d\x5f\x9f\x36\x6e\xc0\xe3\x34\x4d\x71\x2d\x35" "\xed\xc1\x7c\x20\x92\x96\xc3\xdb\x7f\xf2\x79\xc9\xbc\x5a\xb3\x56\xc3\x47" "\x13\x99\xf8\x60\xfe\xf7\x5f\x37\x88\x8d\x0b\x09\x68\xf5\xa9\xfc\xdf\x57" "\xcc\x5c\x62\xf4\x5f\xca\xcc\xb1\xa3\x40\x1d\x60\x4f\x41\x58\x40\x87\x3a" "\x0e\x1d\xf3\x8c\x8c\x7c\x9c\xe2\x32\x54\x2a\xcf\x57\xc4\x4f\xae\xa1\x90" "\xb9\x92\xe3\x6a\xa1\x13\xdb\xa4\x2d\xef\x9c\x5b\xc3\xc9\x08\x1e\x52\x98" "\x60\x58\x3d\x8f\xb2\xdd\x17\x27\x9e\xaf\xcb\xdb\x22\x6c\x00\x54\x5f\x7f" "\x7c\x4f\xa9\x36\x03\xf2\xae\x22\x60\xbb\x56\xcb\x1a\x54\x2a\xb2\x7d\xfb" "\x25\xf5\x4b\x6f\x73\xe2\xda\x29\xef\x6b\x6f\x33\xe0\x99\xcd\x94\x98\x72" "\x38\xb5\xb0\x9a\xb1\xb3\x77\xfc\x08\x13\x55\x72\xdd\x7e\x7a\xe0\x9d\x60" "\x31\x15\xf1\xcd\xe7\x57\xc9\xd6\xfd\x83\x8a\x84\x25\x1c\xbe\x5f\x8e\x9e" "\x62\xfe\xe4\xd1\x55\x4f\xa2\x0d\x84\xdf\x5e\x10\x7d\x36\x8c\x13\x9b\x5c" "\x17\xe9\x16\xa9\x90\x42\x2a\x72\x03\x21\x98\xa5\x55\x56\x8f\x68\x79\xb3" "\x15\x02\x35\xea\x93\xab\xb0\x45\x21\xdb\x13\x4a\xad\x75\xb7\xc4\x1e\xc6" "\x3c\xa9\x0e\x22\xc2\x6a\x6e\xf5\x12\xcd\x5c\x59\x83\x30\xe0\x7b\x18\x18" "\x3e\x20\xf1\x45\xc0\x31\xa1\x29\xae\xd2\x18\x6d\x7a\x6e\x3c\xc0\x01\x25" "\xab\xaf\x55\xb1\x8a\x72\x7b\xfc\x66\x16\xd5\x53\x20\x2d\x84\x73\x0e\x2f" "\x01\x4e\x54\xff\x20\x95\x9c\x2e\x00\x00\x00\x00\x00\x00\x00\x7d\x46\x86" "\x76\xe6\xc0\xda\x27\xc7\x54\x54\xf1\x6c\x06\x80\x51\x9c\x26\xf1\xa6\x02" "\xb0\xdf\x27\xdf\x00\xe1\x6a\xf8\xac\x46\x72\x4e\x61\x08\x7a\xed\xaf\x64" "\x5e\x1f\x9d\x56\x12\x35\x3a\x1e\x4f\xc1\x3d\xfb\xac\x79\xa5\x20\x99\xbf" "\x9d\x2a\x34\xbd\x59\xc6\x88\xf7\xa9\xe5\x61\x16\xe7\x82\x58\x12\xd4\x09" "\x30\xfd\xa6\x5d\xf0\xd3\xfc\x0c\xd7\x21\x84\xdb\xd6\xc8\xaa\xfe\x64\x95" "\x36\xf8\xed\xdc\x39\xf5\x90\x51\x13\x69\x4a\xaa\x7c\x9a\xe4\x43\x14\x2c" "\xb4\xaa\xbc\x8e\x52\xf3\x8d\x3d\xb2\x25\xc7\x3c\xf2\x5a\xa7\xc6\x58\x63" "\xe6\x8c\xe9\x20\x9c\x47\x00\xdc\x54\xf2\x31\xb3\x05\x51\x11\x3b\x4d\xcf" "\x2e\xd9\xc1\x0b\x50\x02\x70\x93\x33\x44\x19\x5b\x18\x35\xb9\x11\xbc\x8f" "\x15\x3b\x30\x51\x65\x89\x92\xda\x07\x86\x04\x0b\xd4\xc5\x16\x02\x1b\x00" "\x06\x9f\x88\xaf\x69\xfd\xd6\x83\x0f\xfe\xd9\x30\x79\x7e\x82\xfe\x79\x56" "\x47\x0a\x64\x7d\x5e\x5d\x4a\x04\x78\xf0\xcb\x82\x61\xea\x45\x5f\x01\xb1" "\x13\xa4\xaa\x2b\x4c\x24\xe4\x31\x05\x11\xe9\x59\xc7\xe9\x84\xf9\xb2\xb7" "\x4f\x69\x13\x9a\xcf\xc5\xbc\x10\x47\xe7\x5b\x3d\x39\x74\xc5\x22\x39\x94" "\x6d\xf4\x49\x48\x10\x0d\xf2\x8c\x6a\x20\xe6\x38\x7a\x3b\x1b\x60\xd4\x16" "\x8f\xa2\x55\x53\xe8\x6d\x14\x9c\xa2\x3b\x86\x27\xea\xc0\xe5\xf6\x68\x85" "\x8d\x75\x22\xcf\x6e\xb3\x38\x8e\xb9\x71\xef\x71\x8d\x4d\x0d\x7e\x97\xfd" "\x99\x3b\x44\x9d\xa5\x1c\x6d\xb1\x91\x13\x27\x2e\xaa\x3a\x0e\x3e\x70\x09" "\x00\x94\x5d\x8f\xdf\x74\x65\xef\x48\xda\xc2\x0b\x42\x33\x40\xf0\xd2\x6a" "\x31\x38\xc6\x9c\xef\x80\xfc\x2e\xd1\x08\xb5\x6b\xc1\x38\x8d\x93\xb0\x4b" "\x94\xa4\x96\x4e\x0e\xde\xfc\x73\xfd\x27\x1e\x4c\x55\x06\xf2\x46\xca\x07" "\x50\x21\x70\xf3\x11\x11\x6c\xba\x1c\x78\x7a\xa4\x36\x42\x92\x75\x17\x05" "\x45\x57\x67\x9b\x4c\x19\xc1\xef\xe5\x20\x05\x23\x11\x93\x66\x63\x22\x31" "\x11\x69\x25\x30\xde\xc7\x36\x24\x94\xe1\x72\xbe\x2d\x98\xc9\xe6\x81\x42" "\x8c\x05\x8a\x1d\x5d\xe3\x4a\xca\x6f\x3a\x6e\xa8\x0a\x90\x82\xbb\x01\xfc" "\xca\x51\x1e\xce\x6f\x61\xbb\xe8\x63\x4b\x19\x2b\xca\x21\x0b\x63\x0f\x2e" "\x75\x11\xa0\xa2\x4b\xed\x64\x75\x63\x41\x50\x44\x92\x40\x73\x9c\xb9\x24" "\x52\xa5\x52\xe3\x07\x53\xdb\x9d\x7e\x1e\x6e\x72\x95\xae\x7d\xeb\x17\x6e" "\xc4\xb1\x50\x7f\x3e\x79\x72\x31\xea\x14\x81\x8a\xf0\x83\x46\x81\x66\x58" "\x3d\x56\x76\x12\xcd\x51\x6a\xb7\x48\x06\x37\xaf\x88\x03\x33\xd0\xc9\x7e" "\x79\x4a\xe6\x2e\xdc\xbe\xb6\x49\x3d\xde\xfa\xcb\x96\xf2\x98\x85\xd3\xfb" "\x2c\xee\xd0\x2e\xec\x9e\x4f\x57\x61\x40\xfe\xbe\x28\x04\x71\x6e\xaf\xcb" "\x83\x7b\xe8\x85\x3d\x50\x47\x66\x4b\x13\x94\xa6\xe1\xea\x5a\xaf\xdd\x44" "\x00\x8f\x68\xbb\xf4\x42\xde\x81\x27\x84\x8b\x0e\xcc\xea\xb5\x7e\xf1\x4a" "\x8e\xbb\x67\xd3\x2a\xb3\xac\x38\x96\x1e\xcc\x6f\xbc\xe7\xe1\xf1\xfb\xcf" "\x78\xba\x9a\x7e\xb0\xd0\x89\x7b\x05\x97\x20\x8f\x85\x5a\xf5\x09\xdd\x64" "\x1b\xf3\x10\x8b\x6f\x7c\xd5\xd8\x5a\x05\xda\x2b\xfc\xff\x0f\x2d\xf8\x41" "\xad\xcd\xe0\x07\x27\x4b\x65\x4b\x8f\x0a\xc5\x5b\xfd\x98\x96\x77\x59\x10" "\x52\x78\x21\x79\x3c\x96\x66\x8e\x8f\x91\xb6\xdc\x1c\xd4\x67\xa9\x0e\x74" "\x76\xdf\xcb\xe6\x9b\x2f\x87\xcf\x72\x97\xa5\x15\x51\x63\x9e\x50\x3f\xe5" "\xde\x7d\xca\xfc\x38\xbb\x02\x41\x16\x75\xa6\x05\xd0\x72\x8c\x79\xad\x30" "\xbc\xa1\x96\xeb\xd1\x94\x1e\xc5\x90\x25\xac\xe1\x1b\xda\xbd\x16\x52\xfe" "\xf3\x29\xa1\x92\x15\xc2\x61\x77\xbc\x89\xe1\x8f\xe8\xfb\xe7\x88\x19\x6e" "\xce\xb5\x4e\xf3\xdb\x24\xd5\x24\x42\xe2\xea\x33\x9e\xe2\xd9\x96\x46\x2c" "\x57\x0c\x31\x1f\x1f\x8a\x31\x49\x7f\xf3\xc0\xbc\x62\x3d\x59\x6e\xbe\x4a" "\x25\x66\x09\xb6\x3c\xf4\x6e\x08\x20\xb3\x4f\x40\x09\x7d\xa8\xac\x31\x41" "\x2b\x74\x13\x0c\xf8\xd5\xe9\x20\x3a\x34\xc6\x67\x80\x20\x26\x91\x0e\x93" "\x40\xf0\x0c\xa7\xf0\xed\xa7\xc2\xc9\x99\x4a\xed\x24\xe5\x72\x6f\xbe\x52" "\x09\x6d\x24\xd1\x3b\xe9\x3e\xf0\x64\xe9\x55\x3b\x36\xab\x02\xe2\xda\xbd" "\x14\x1e\x87\xf7\x96\x28\x04\xf3\x26\x12\xab\x8f\x4c\x7c\x0a\x65\x28\xef" "\xbc\xe7\x88\x9f\x78\xbf\x16\x62\xba\xf3\x15\x97\x14\x09\x95\xc9\x25\x27" "\xe7\x27\x6f\xfc\x76\x5e\x00\x00\x3e\x6b\x95\x7b\x10\x03\xf8\x8b\xbb\x75" "\x19\x0b\x4d\xe6\x90\x8a\x1e\xd2\xd6\x40\xd8\x31\x31\x3d\x9b\x7f\xe0\xc9" "\x64\x50\xa5\xf1\x2a\x14\xb6\x1c\x87\xa0\xb5\x01\x4a\xe9\x80\x1d\xac\x62" "\x13\x54\x3c\x7d\x36\xef\xc4\x0a\xe2\xbd\xcb\x11\xd1\x1e\x40\xcf\x8f\x6a" "\xb1\xb0\x00\xff\x28\xd3\xc1\x80\x0d\xce\x5e\xcd\xe4\x4a\xbc\x02\xce\xde" "\xb7\x3e\x77\xdf\x6c\x9d\x4b\xdf\x04\x46\xa6\x37\x23\xae\x00\x91\x3e\x52" "\x4b\x99\xf0\x11\xc4\x9a\x58\x08\x17\x87\x46\xca\x77\x57\x2c\xe2\xab\x6d" "\x66\xe5\xa9\xff\x7f\x65\x61\x06\xb6\x42\xbc\x4d\xf1\xf3\x40\x12\xd8\x1d" "\x7b\xa4\x36\x4e\xca\xc4\x0e\xb5\xbc\xca\x13\x7b\x9b\x1c\x1a\xa8\xda\xef" "\x03\x81\x44\x80\x72\x48\x42\xe4\x5f\x9f\x46\x35\x7c\x98\xbe\x56\xba\x0f" "\x44\xc9\x66\x4c\x10\xd1\xac\x83\x13\x0f\x91\x26\x50\xff\x0a\x7a\x9c\xe7" "\xe2\xb2\x22\xb7\xa2\x00\x3c\x63\xce\x7e\xbf\xfd\xea\x7b\xd2\xb8\x93\x4b" "\x4d\x91\xdf\x03\x6a\xf9\x4d\xc3\x89\xa2\x59\xdd\x77\x8b\x4c\x95\x8f\x86" "\x91\xee\xd9\xb4\xd0\x57\x79\x57\xc5\x9f\x2d\xb8\x44\xe1\x6f\xef\xf7\x34" "\xaa\x65\x83\x13\x04\x0c\x3d\xf9\x70\xcf\x07\xb0\xd0\xb0\x7d\x19\x6f\xa8" "\xf1\x64\xff\x4e\x10\xfa\x38\x66\x10\x3e\x15\xfb\xfc\xe4\xb2\x34\x00\x37" "\x48\x21\x08\x15\x91\xd0", 1896); *(uint64_t*)0x20000210 = 0x20000340; memcpy((void*)0x20000340, "syzkaller\000", 10); *(uint32_t*)0x20000218 = 0; *(uint32_t*)0x2000021c = 0; *(uint64_t*)0x20000220 = 0; *(uint32_t*)0x20000228 = 0; *(uint32_t*)0x2000022c = 0; *(uint8_t*)0x20000230 = 0; *(uint8_t*)0x20000231 = 0; *(uint8_t*)0x20000232 = 0; *(uint8_t*)0x20000233 = 0; *(uint8_t*)0x20000234 = 0; *(uint8_t*)0x20000235 = 0; *(uint8_t*)0x20000236 = 0; *(uint8_t*)0x20000237 = 0; *(uint8_t*)0x20000238 = 0; *(uint8_t*)0x20000239 = 0; *(uint8_t*)0x2000023a = 0; *(uint8_t*)0x2000023b = 0; *(uint8_t*)0x2000023c = 0; *(uint8_t*)0x2000023d = 0; *(uint8_t*)0x2000023e = 0; *(uint8_t*)0x2000023f = 0; *(uint32_t*)0x20000240 = 0; *(uint32_t*)0x20000244 = 0; *(uint32_t*)0x20000248 = -1; *(uint32_t*)0x2000024c = 8; *(uint64_t*)0x20000250 = 0x20000000; *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 0; *(uint32_t*)0x20000258 = 0; *(uint32_t*)0x2000025c = 0x10; *(uint64_t*)0x20000260 = 0x20000000; *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 0; *(uint32_t*)0x20000008 = 0; *(uint32_t*)0x2000000c = 0; *(uint32_t*)0x20000268 = 0xfffffcca; *(uint32_t*)0x2000026c = 0; *(uint32_t*)0x20000270 = -1; res = syscall(__NR_bpf, 5ul, 0x20000200ul, 0x48ul); if (res != -1) r[0] = res; *(uint32_t*)0x20000280 = r[0]; *(uint32_t*)0x20000284 = 0x2e0; *(uint32_t*)0x20000288 = 0x1c; *(uint32_t*)0x2000028c = 0; *(uint64_t*)0x20000290 = 0x20000080; memcpy((void*)0x20000080, "\x39\x1b\xb4\x20\x04\xd5\x3c\x9c\x6a\xc0\x92\xc6" "\x08\x00\xc4\x86\x3b\x20\x63\xcd\x18\x35\x51\xb2" "\xf3\x34\x75\xe5", 28); *(uint64_t*)0x20000298 = 0; *(uint32_t*)0x200002a0 = 0; *(uint32_t*)0x200002a4 = 0; *(uint32_t*)0x200002a8 = 0; *(uint32_t*)0x200002ac = 0; *(uint64_t*)0x200002b0 = 0; *(uint64_t*)0x200002b8 = 0; *(uint32_t*)0x200002c0 = 0; *(uint32_t*)0x200002c4 = 0; syscall(__NR_bpf, 0xaul, 0x20000280ul, 0x48ul); } int main(void) { syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); do_sandbox_none(); return 0; }