// https://syzkaller.appspot.com/bug?id=055240ce8d456958b88466edbbac4ec89e11c5ac // 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, 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 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 unsigned int queue_count = 2; static void netlink_add_device_impl(struct nlmsg* nlmsg, const char* type, const char* name, bool up) { struct ifinfomsg hdr; memset(&hdr, 0, sizeof(hdr)); if (up) hdr.ifi_flags = hdr.ifi_change = IFF_UP; 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_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count)); netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count)); 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, false); netlink_done(nlmsg); int err = netlink_send(nlmsg, sock); if (err < 0) { } } static void netlink_add_veth(struct nlmsg* nlmsg, int sock, const char* name, const char* peer) { netlink_add_device_impl(nlmsg, "veth", name, false); 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_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count)); netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count)); netlink_done(nlmsg); netlink_done(nlmsg); netlink_done(nlmsg); int err = netlink_send(nlmsg, sock); if (err < 0) { } } static void netlink_add_xfrm(struct nlmsg* nlmsg, int sock, const char* name) { netlink_add_device_impl(nlmsg, "xfrm", name, true); netlink_nest(nlmsg, IFLA_INFO_DATA); int if_id = 1; netlink_attr(nlmsg, 2, &if_id, sizeof(if_id)); netlink_done(nlmsg); netlink_done(nlmsg); int err = netlink_send(nlmsg, sock); if (err < 0) { } } 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, false); 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); if (err < 0) { } } 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, false); netlink_done(nlmsg); int ifindex = if_nametoindex(link); netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex)); int err = netlink_send(nlmsg, sock); if (err < 0) { } } 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, false); 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); if (err < 0) { } } static void netlink_add_macvlan(struct nlmsg* nlmsg, int sock, const char* name, const char* link) { netlink_add_device_impl(nlmsg, "macvlan", name, false); 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); if (err < 0) { } } 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, false); 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); if (err < 0) { } } #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, false); 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); if (err < 0) { } } 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 struct nlmsg nlmsg; #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, true); 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, true); 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) { write_file("/sys/bus/netdevsim/del_device", "%u", addr); if (write_file("/sys/bus/netdevsim/new_device", "%u %u", addr, port_count)) { char buf[32]; 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, true); 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"}, {"veth", 0}, {"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_add_xfrm(&nlmsg, sock, "xfrm0"); 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 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(); initialize_netdevices_init(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); initialize_netdevices(); sandbox_common_mount_tmpfs(); loop(); exit(1); } uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0}; void loop(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // socket$xdp arguments: [ // domain: const = 0x2c (8 bytes) // type: const = 0x3 (8 bytes) // proto: const = 0x0 (4 bytes) // ] // returns sock_xdp res = syscall(__NR_socket, /*domain=*/0x2cul, /*type=*/3ul, /*proto=*/0); if (res != -1) r[0] = res; // setsockopt$XDP_UMEM_REG arguments: [ // fd: sock_xdp (resource) // level: const = 0x11b (4 bytes) // opt: const = 0x4 (4 bytes) // val: ptr[in, xdp_umem_reg] { // xdp_umem_reg { // addr: ptr[out, buffer] { // buffer: (DirOut) // } // len: xdp_umem_sizes = 0x2000 (8 bytes) // chunk_size: xdp_umem_chunk_sizes = 0x800 (4 bytes) // headroom: int32 = 0x0 (4 bytes) // flags: xdp_umem_flags = 0x1 (4 bytes) // pad = 0x0 (4 bytes) // } // } // len: bytesize = 0x20 (8 bytes) // ] *(uint64_t*)0x200000000100 = 0x200000100000; *(uint64_t*)0x200000000108 = 0x2000; *(uint32_t*)0x200000000110 = 0x800; *(uint32_t*)0x200000000114 = 0; *(uint32_t*)0x200000000118 = 1; syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/4, /*val=*/0x200000000100ul, /*len=*/0x20ul); // setsockopt$XDP_TX_RING arguments: [ // fd: sock_xdp (resource) // level: const = 0x11b (4 bytes) // opt: const = 0x3 (4 bytes) // val: ptr[in, xdp_ring_sizes] { // xdp_ring_sizes = 0x10 (4 bytes) // } // len: bytesize = 0x4 (8 bytes) // ] *(uint32_t*)0x200000000040 = 0x10; syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/3, /*val=*/0x200000000040ul, /*len=*/4ul); // setsockopt$XDP_UMEM_COMPLETION_RING arguments: [ // fd: sock_xdp (resource) // level: const = 0x11b (4 bytes) // opt: const = 0x6 (4 bytes) // val: ptr[in, xdp_ring_sizes] { // xdp_ring_sizes = 0x10 (4 bytes) // } // len: bytesize = 0x4 (8 bytes) // ] *(uint32_t*)0x200000000080 = 0x10; syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/6, /*val=*/0x200000000080ul, /*len=*/4ul); // setsockopt$XDP_UMEM_FILL_RING arguments: [ // fd: sock_xdp (resource) // level: const = 0x11b (4 bytes) // opt: const = 0x5 (4 bytes) // val: ptr[in, xdp_ring_sizes] { // xdp_ring_sizes = 0x10 (4 bytes) // } // len: bytesize = 0x4 (8 bytes) // ] *(uint32_t*)0x200000000140 = 0x10; syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x11b, /*opt=*/5, /*val=*/0x200000000140ul, /*len=*/4ul); // socketpair$unix arguments: [ // domain: const = 0x1 (8 bytes) // type: unix_socket_type = 0x1 (8 bytes) // proto: const = 0x0 (4 bytes) // fds: ptr[out, unix_pair] { // unix_pair { // fd0: sock_unix (resource) // fd1: sock_unix (resource) // } // } // ] res = syscall(__NR_socketpair, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0, /*fds=*/0x2000000002c0ul); if (res != -1) r[1] = *(uint32_t*)0x2000000002c4; // ioctl$sock_SIOCGIFINDEX arguments: [ // fd: sock (resource) // cmd: const = 0x8933 (4 bytes) // arg: ptr[out, ifreq_dev_t[devnames, ifindex]] { // ifreq_dev_t[devnames, ifindex] { // ifr_ifrn: buffer: {69 70 36 67 72 65 30 00 00 00 00 00 00 00 00 00} // (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes) // } // } // ] memcpy((void*)0x200000000200, "ip6gre0\000\000\000\000\000\000\000\000\000", 16); res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8933, /*arg=*/0x200000000200ul); if (res != -1) r[2] = *(uint32_t*)0x200000000210; // bind$xdp arguments: [ // fd: sock_xdp (resource) // addr: ptr[in, sockaddr_xdp_bind] { // sockaddr_xdp_bind { // sxdp_family: const = 0x2c (2 bytes) // sxdp_flags: sxdp_flags = 0x2 (2 bytes) // sxdp_ifindex: ifindex (resource) // sxdp_queue_id: int32 = 0x0 (4 bytes) // sxdp_shared_umem_fd: sock_xdp (resource) // } // } // len: bytesize = 0x10 (8 bytes) // ] *(uint16_t*)0x2000000003c0 = 0x2c; *(uint16_t*)0x2000000003c2 = 2; *(uint32_t*)0x2000000003c4 = r[2]; *(uint32_t*)0x2000000003c8 = 0; *(uint32_t*)0x2000000003cc = 0; syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x2000000003c0ul, /*len=*/0x10ul); // mmap$xdp arguments: [ // addr: VMA[0x1000] // len: len = 0x1000 (4 bytes) // prot: mmap_prot = 0x3 (8 bytes) // flags: mmap_flags = 0x11 (8 bytes) // fd: sock_xdp (resource) // offset: xdp_mmap_offsets = 0x80000000 (8 bytes) // ] syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000, /*prot=PROT_WRITE|PROT_READ*/ 3ul, /*flags=MAP_FIXED|MAP_SHARED*/ 0x11ul, /*fd=*/r[0], /*offset=XDP_PGOFF_TX_RING*/ 0x80000000ul); // syz_genetlink_get_family_id$ethtool arguments: [ // name: ptr[in, buffer] { // buffer: {65 74 68 74 6f 6f 6c 00} (length 0x8) // } // fd: sock_nl_generic (resource) // ] // returns genl_ethtool_family_id memcpy((void*)0x200000000000, "ethtool\000", 8); syz_genetlink_get_family_id(/*name=*/0x200000000000, /*fd=*/-1); // write$uinput_user_dev arguments: [ // fd: fd_uinput (resource) // data: ptr[in, uinput_user_dev] { // uinput_user_dev { // name: buffer: {73 79 7a 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x50) id: // input_id { // bustype: int16 = 0x3 (2 bytes) // vendor: int16 = 0x2 (2 bytes) // product: int16 = 0x6 (2 bytes) // version: int16 = 0xfffa (2 bytes) // } // ff_effects_max: int32 = 0x3a (4 bytes) // absmax: array[int32] { // int32 = 0x0 (4 bytes) // int32 = 0xf (4 bytes) // int32 = 0xf (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x80 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x80000000 (4 bytes) // int32 = 0x20000006 (4 bytes) // int32 = 0x4d (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x5d (4 bytes) // int32 = 0xa (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xffff2d38 (4 bytes) // int32 = 0xffffff03 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0xe (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x23c5b (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0xf (4 bytes) // int32 = 0xd (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0xffffffff (4 bytes) // int32 = 0xe661 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x28 (4 bytes) // int32 = 0x4c74 (4 bytes) // int32 = 0x80000000 (4 bytes) // int32 = 0x242 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0xe (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x80008071 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x17 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0xdb63 (4 bytes) // int32 = 0x4000008c (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x8008 (4 bytes) // int32 = 0x400 (4 bytes) // int32 = 0x80 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0xf (4 bytes) // } // absmin: array[int32] { // int32 = 0x10000007 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x8000012f (4 bytes) // int32 = 0x2008004 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xfffffff3 (4 bytes) // int32 = 0x129432e6 (4 bytes) // int32 = 0xc8 (4 bytes) // int32 = 0xf9 (4 bytes) // int32 = 0xe (4 bytes) // int32 = 0x2c0 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0xfffffffe (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x2f (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x312 (4 bytes) // int32 = 0x78 (4 bytes) // int32 = 0xe (4 bytes) // int32 = 0xfffffffe (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x7fff (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x400 (4 bytes) // int32 = 0x401 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0xff (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x1000005 (4 bytes) // int32 = 0x5f2e (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x4e2 (4 bytes) // int32 = 0xc (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0xb (4 bytes) // int32 = 0x10000 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x1009 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x47 (4 bytes) // int32 = 0x8000 (4 bytes) // int32 = 0xc25 (4 bytes) // int32 = 0xfe000000 (4 bytes) // int32 = 0xffff (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x94f (4 bytes) // int32 = 0x48c93690 (4 bytes) // int32 = 0x42 (4 bytes) // int32 = 0x3 (4 bytes) // } // absfuzz: array[int32] { // int32 = 0x82 (4 bytes) // int32 = 0x408 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xfffffffe (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8002 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xb (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x1ef (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x86 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x303c (4 bytes) // int32 = 0x3e7 (4 bytes) // int32 = 0xb (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x6d01 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x38 (4 bytes) // int32 = 0x800003 (4 bytes) // int32 = 0x200 (4 bytes) // int32 = 0x80 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x3ff (4 bytes) // int32 = 0x2950bfaf (4 bytes) // int32 = 0xc8 (4 bytes) // int32 = 0xa2 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0xa9 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0xac8 (4 bytes) // int32 = 0xca (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x7ff (4 bytes) // int32 = 0x12b (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0xa (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x1c (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x3c484551 (4 bytes) // } // absflat: array[int32] { // int32 = 0x9 (4 bytes) // int32 = 0xbb33 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x93a (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0xfffffffc (4 bytes) // int32 = 0xb9 (4 bytes) // int32 = 0xce7 (4 bytes) // int32 = 0x203 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x57 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x10000 (4 bytes) // int32 = 0xb8 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x28 (4 bytes) // int32 = 0xa620 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x7ff (4 bytes) // int32 = 0x14c (4 bytes) // int32 = 0x20a7 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x16 (4 bytes) // int32 = 0xffffffff (4 bytes) // int32 = 0x80000000 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0xc8 (4 bytes) // int32 = 0xfffffff9 (4 bytes) // int32 = 0xfffff000 (4 bytes) // int32 = 0x10000 (4 bytes) // int32 = 0x10001 (4 bytes) // int32 = 0x7e (4 bytes) // int32 = 0x100 (4 bytes) // int32 = 0x9602 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0xaf (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xfffffff9 (4 bytes) // int32 = 0x226 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x30b1d693 (4 bytes) // int32 = 0xb1f (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x6c1b (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xb1e (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x200 (4 bytes) // int32 = 0xffff3441 (4 bytes) // int32 = 0xfff (4 bytes) // } // } // } // len: len = 0x45c (8 bytes) // ] memcpy((void*)0x200000000400, "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000", 80); *(uint16_t*)0x200000000450 = 3; *(uint16_t*)0x200000000452 = 2; *(uint16_t*)0x200000000454 = 6; *(uint16_t*)0x200000000456 = 0xfffa; *(uint32_t*)0x200000000458 = 0x3a; *(uint32_t*)0x20000000045c = 0; *(uint32_t*)0x200000000460 = 0xf; *(uint32_t*)0x200000000464 = 0xf; *(uint32_t*)0x200000000468 = 8; *(uint32_t*)0x20000000046c = 0x80; *(uint32_t*)0x200000000470 = 4; *(uint32_t*)0x200000000474 = 3; *(uint32_t*)0x200000000478 = 0x80000000; *(uint32_t*)0x20000000047c = 0x20000006; *(uint32_t*)0x200000000480 = 0x4d; *(uint32_t*)0x200000000484 = 5; *(uint32_t*)0x200000000488 = 0x5d; *(uint32_t*)0x20000000048c = 0xa; *(uint32_t*)0x200000000490 = 5; *(uint32_t*)0x200000000494 = 0xffff2d38; *(uint32_t*)0x200000000498 = 0xffffff03; *(uint32_t*)0x20000000049c = 6; *(uint32_t*)0x2000000004a0 = 3; *(uint32_t*)0x2000000004a4 = 0; *(uint32_t*)0x2000000004a8 = 0xe; *(uint32_t*)0x2000000004ac = 7; *(uint32_t*)0x2000000004b0 = 0; *(uint32_t*)0x2000000004b4 = 7; *(uint32_t*)0x2000000004b8 = 0x23c5b; *(uint32_t*)0x2000000004bc = 1; *(uint32_t*)0x2000000004c0 = 0xf; *(uint32_t*)0x2000000004c4 = 0xd; *(uint32_t*)0x2000000004c8 = 7; *(uint32_t*)0x2000000004cc = 0; *(uint32_t*)0x2000000004d0 = -1; *(uint32_t*)0x2000000004d4 = 0xe661; *(uint32_t*)0x2000000004d8 = 4; *(uint32_t*)0x2000000004dc = 7; *(uint32_t*)0x2000000004e0 = 7; *(uint32_t*)0x2000000004e4 = 0x28; *(uint32_t*)0x2000000004e8 = 0x4c74; *(uint32_t*)0x2000000004ec = 0x80000000; *(uint32_t*)0x2000000004f0 = 0x242; *(uint32_t*)0x2000000004f4 = 3; *(uint32_t*)0x2000000004f8 = 0xe; *(uint32_t*)0x2000000004fc = 0; *(uint32_t*)0x200000000500 = 0x80008071; *(uint32_t*)0x200000000504 = 7; *(uint32_t*)0x200000000508 = 0x17; *(uint32_t*)0x20000000050c = 1; *(uint32_t*)0x200000000510 = 7; *(uint32_t*)0x200000000514 = 6; *(uint32_t*)0x200000000518 = 0xdb63; *(uint32_t*)0x20000000051c = 0x4000008c; *(uint32_t*)0x200000000520 = 6; *(uint32_t*)0x200000000524 = 5; *(uint32_t*)0x200000000528 = 0; *(uint32_t*)0x20000000052c = 4; *(uint32_t*)0x200000000530 = 0; *(uint32_t*)0x200000000534 = 0x8008; *(uint32_t*)0x200000000538 = 0x400; *(uint32_t*)0x20000000053c = 0x80; *(uint32_t*)0x200000000540 = 0; *(uint32_t*)0x200000000544 = 5; *(uint32_t*)0x200000000548 = 6; *(uint32_t*)0x20000000054c = 6; *(uint32_t*)0x200000000550 = 3; *(uint32_t*)0x200000000554 = 1; *(uint32_t*)0x200000000558 = 0xf; *(uint32_t*)0x20000000055c = 0x10000007; *(uint32_t*)0x200000000560 = 9; *(uint32_t*)0x200000000564 = 0x8000012f; *(uint32_t*)0x200000000568 = 0x2008004; *(uint32_t*)0x20000000056c = 5; *(uint32_t*)0x200000000570 = 0xfffffff3; *(uint32_t*)0x200000000574 = 0x129432e6; *(uint32_t*)0x200000000578 = 0xc8; *(uint32_t*)0x20000000057c = 0xf9; *(uint32_t*)0x200000000580 = 0xe; *(uint32_t*)0x200000000584 = 0x2c0; *(uint32_t*)0x200000000588 = 2; *(uint32_t*)0x20000000058c = 9; *(uint32_t*)0x200000000590 = 0xfffffffe; *(uint32_t*)0x200000000594 = 3; *(uint32_t*)0x200000000598 = 0; *(uint32_t*)0x20000000059c = 0; *(uint32_t*)0x2000000005a0 = 5; *(uint32_t*)0x2000000005a4 = 0x2f; *(uint32_t*)0x2000000005a8 = 0; *(uint32_t*)0x2000000005ac = 0x312; *(uint32_t*)0x2000000005b0 = 0x78; *(uint32_t*)0x2000000005b4 = 0xe; *(uint32_t*)0x2000000005b8 = 0xfffffffe; *(uint32_t*)0x2000000005bc = 4; *(uint32_t*)0x2000000005c0 = 7; *(uint32_t*)0x2000000005c4 = 0x7fff; *(uint32_t*)0x2000000005c8 = 5; *(uint32_t*)0x2000000005cc = 0x400; *(uint32_t*)0x2000000005d0 = 0x401; *(uint32_t*)0x2000000005d4 = 7; *(uint32_t*)0x2000000005d8 = 1; *(uint32_t*)0x2000000005dc = 0xff; *(uint32_t*)0x2000000005e0 = 5; *(uint32_t*)0x2000000005e4 = 0x1000005; *(uint32_t*)0x2000000005e8 = 0x5f2e; *(uint32_t*)0x2000000005ec = 1; *(uint32_t*)0x2000000005f0 = 0x4e2; *(uint32_t*)0x2000000005f4 = 0xc; *(uint32_t*)0x2000000005f8 = 4; *(uint32_t*)0x2000000005fc = 0xb; *(uint32_t*)0x200000000600 = 0x10000; *(uint32_t*)0x200000000604 = 9; *(uint32_t*)0x200000000608 = 8; *(uint32_t*)0x20000000060c = 0x1009; *(uint32_t*)0x200000000610 = 6; *(uint32_t*)0x200000000614 = 0x47; *(uint32_t*)0x200000000618 = 0x8000; *(uint32_t*)0x20000000061c = 0xc25; *(uint32_t*)0x200000000620 = 0xfe000000; *(uint32_t*)0x200000000624 = 0xffff; *(uint32_t*)0x200000000628 = 0; *(uint32_t*)0x20000000062c = 4; *(uint32_t*)0x200000000630 = 9; *(uint32_t*)0x200000000634 = 3; *(uint32_t*)0x200000000638 = 3; *(uint32_t*)0x20000000063c = 9; *(uint32_t*)0x200000000640 = 1; *(uint32_t*)0x200000000644 = 3; *(uint32_t*)0x200000000648 = 3; *(uint32_t*)0x20000000064c = 0x94f; *(uint32_t*)0x200000000650 = 0x48c93690; *(uint32_t*)0x200000000654 = 0x42; *(uint32_t*)0x200000000658 = 3; *(uint32_t*)0x20000000065c = 0x82; *(uint32_t*)0x200000000660 = 0x408; *(uint32_t*)0x200000000664 = 7; *(uint32_t*)0x200000000668 = 5; *(uint32_t*)0x20000000066c = 0xfffffffe; *(uint32_t*)0x200000000670 = 6; *(uint32_t*)0x200000000674 = 2; *(uint32_t*)0x200000000678 = 9; *(uint32_t*)0x20000000067c = 5; *(uint32_t*)0x200000000680 = 0x8002; *(uint32_t*)0x200000000684 = 4; *(uint32_t*)0x200000000688 = 5; *(uint32_t*)0x20000000068c = 0xb; *(uint32_t*)0x200000000690 = 2; *(uint32_t*)0x200000000694 = 5; *(uint32_t*)0x200000000698 = 7; *(uint32_t*)0x20000000069c = 0; *(uint32_t*)0x2000000006a0 = 0x1ef; *(uint32_t*)0x2000000006a4 = 5; *(uint32_t*)0x2000000006a8 = 8; *(uint32_t*)0x2000000006ac = 0x86; *(uint32_t*)0x2000000006b0 = 3; *(uint32_t*)0x2000000006b4 = 0x303c; *(uint32_t*)0x2000000006b8 = 0x3e7; *(uint32_t*)0x2000000006bc = 0xb; *(uint32_t*)0x2000000006c0 = 5; *(uint32_t*)0x2000000006c4 = 2; *(uint32_t*)0x2000000006c8 = 2; *(uint32_t*)0x2000000006cc = 3; *(uint32_t*)0x2000000006d0 = 2; *(uint32_t*)0x2000000006d4 = 4; *(uint32_t*)0x2000000006d8 = 0x6d01; *(uint32_t*)0x2000000006dc = 3; *(uint32_t*)0x2000000006e0 = 0x38; *(uint32_t*)0x2000000006e4 = 0x800003; *(uint32_t*)0x2000000006e8 = 0x200; *(uint32_t*)0x2000000006ec = 0x80; *(uint32_t*)0x2000000006f0 = 3; *(uint32_t*)0x2000000006f4 = 0x3ff; *(uint32_t*)0x2000000006f8 = 0x2950bfaf; *(uint32_t*)0x2000000006fc = 0xc8; *(uint32_t*)0x200000000700 = 0xa2; *(uint32_t*)0x200000000704 = 7; *(uint32_t*)0x200000000708 = 0xa9; *(uint32_t*)0x20000000070c = 5; *(uint32_t*)0x200000000710 = 8; *(uint32_t*)0x200000000714 = 0xac8; *(uint32_t*)0x200000000718 = 0xca; *(uint32_t*)0x20000000071c = 2; *(uint32_t*)0x200000000720 = 3; *(uint32_t*)0x200000000724 = 0x7ff; *(uint32_t*)0x200000000728 = 0x12b; *(uint32_t*)0x20000000072c = 4; *(uint32_t*)0x200000000730 = 1; *(uint32_t*)0x200000000734 = 0xa; *(uint32_t*)0x200000000738 = 0; *(uint32_t*)0x20000000073c = 1; *(uint32_t*)0x200000000740 = 0x1c; *(uint32_t*)0x200000000744 = 7; *(uint32_t*)0x200000000748 = 7; *(uint32_t*)0x20000000074c = 3; *(uint32_t*)0x200000000750 = 5; *(uint32_t*)0x200000000754 = 4; *(uint32_t*)0x200000000758 = 0x3c484551; *(uint32_t*)0x20000000075c = 9; *(uint32_t*)0x200000000760 = 0xbb33; *(uint32_t*)0x200000000764 = 7; *(uint32_t*)0x200000000768 = 0; *(uint32_t*)0x20000000076c = 5; *(uint32_t*)0x200000000770 = 0x93a; *(uint32_t*)0x200000000774 = 5; *(uint32_t*)0x200000000778 = 2; *(uint32_t*)0x20000000077c = 0xfffffffc; *(uint32_t*)0x200000000780 = 0xb9; *(uint32_t*)0x200000000784 = 0xce7; *(uint32_t*)0x200000000788 = 0x203; *(uint32_t*)0x20000000078c = 2; *(uint32_t*)0x200000000790 = 0x57; *(uint32_t*)0x200000000794 = 2; *(uint32_t*)0x200000000798 = 3; *(uint32_t*)0x20000000079c = 0; *(uint32_t*)0x2000000007a0 = 0x10000; *(uint32_t*)0x2000000007a4 = 0xb8; *(uint32_t*)0x2000000007a8 = 3; *(uint32_t*)0x2000000007ac = 0x28; *(uint32_t*)0x2000000007b0 = 0xa620; *(uint32_t*)0x2000000007b4 = 2; *(uint32_t*)0x2000000007b8 = 5; *(uint32_t*)0x2000000007bc = 1; *(uint32_t*)0x2000000007c0 = 0x7ff; *(uint32_t*)0x2000000007c4 = 0x14c; *(uint32_t*)0x2000000007c8 = 0x20a7; *(uint32_t*)0x2000000007cc = 6; *(uint32_t*)0x2000000007d0 = 0x16; *(uint32_t*)0x2000000007d4 = -1; *(uint32_t*)0x2000000007d8 = 0x80000000; *(uint32_t*)0x2000000007dc = 5; *(uint32_t*)0x2000000007e0 = 8; *(uint32_t*)0x2000000007e4 = 0xc8; *(uint32_t*)0x2000000007e8 = 0xfffffff9; *(uint32_t*)0x2000000007ec = 0xfffff000; *(uint32_t*)0x2000000007f0 = 0x10000; *(uint32_t*)0x2000000007f4 = 0x10001; *(uint32_t*)0x2000000007f8 = 0x7e; *(uint32_t*)0x2000000007fc = 0x100; *(uint32_t*)0x200000000800 = 0x9602; *(uint32_t*)0x200000000804 = 7; *(uint32_t*)0x200000000808 = 0xaf; *(uint32_t*)0x20000000080c = 5; *(uint32_t*)0x200000000810 = 0xfffffff9; *(uint32_t*)0x200000000814 = 0x226; *(uint32_t*)0x200000000818 = 5; *(uint32_t*)0x20000000081c = 5; *(uint32_t*)0x200000000820 = 8; *(uint32_t*)0x200000000824 = 0x30b1d693; *(uint32_t*)0x200000000828 = 0xb1f; *(uint32_t*)0x20000000082c = 8; *(uint32_t*)0x200000000830 = 7; *(uint32_t*)0x200000000834 = 1; *(uint32_t*)0x200000000838 = 0x6c1b; *(uint32_t*)0x20000000083c = 0; *(uint32_t*)0x200000000840 = 4; *(uint32_t*)0x200000000844 = 5; *(uint32_t*)0x200000000848 = 0xb1e; *(uint32_t*)0x20000000084c = 6; *(uint32_t*)0x200000000850 = 0x200; *(uint32_t*)0x200000000854 = 0xffff3441; *(uint32_t*)0x200000000858 = 0xfff; syscall(__NR_write, /*fd=*/(intptr_t)-1, /*data=*/0x200000000400ul, /*len=*/0x45cul); // sendmsg$IPCTNL_MSG_TIMEOUT_GET arguments: [ // fd: sock_nl_netfilter (resource) // msg: ptr[in, // msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_CTNETLINK_TIMEOUT, // IPCTNL_MSG_TIMEOUT_GET, cttimeout_nla_policy]]] { // msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_CTNETLINK_TIMEOUT, // IPCTNL_MSG_TIMEOUT_GET, cttimeout_nla_policy]] { // addr: ptr[in, sockaddr_nl_t[AF_NETLINK, const[0, int32], // flags[netlink_group_bitmap, int32]]] { // sockaddr_nl_t[AF_NETLINK, const[0, int32], // flags[netlink_group_bitmap, int32]] { // nl_family: const = 0x10 (2 bytes) // nl_pad: const = 0x0 (2 bytes) // nl_pid: const = 0x0 (4 bytes) // nl_groups: netlink_group_bitmap = 0x40 (4 bytes) // } // } // addrlen: len = 0xc (4 bytes) // pad = 0x0 (4 bytes) // vec: nil // vlen: const = 0x1 (8 bytes) // ctrl: const = 0x0 (8 bytes) // ctrllen: const = 0x0 (8 bytes) // f: send_flags = 0x40800 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x40000 (8 bytes) // ] *(uint64_t*)0x200000000280 = 0x2000000001c0; *(uint16_t*)0x2000000001c0 = 0x10; *(uint16_t*)0x2000000001c2 = 0; *(uint32_t*)0x2000000001c4 = 0; *(uint32_t*)0x2000000001c8 = 0x40; *(uint32_t*)0x200000000288 = 0xc; *(uint64_t*)0x200000000290 = 0; *(uint64_t*)0x200000000298 = 1; *(uint64_t*)0x2000000002a0 = 0; *(uint64_t*)0x2000000002a8 = 0; *(uint32_t*)0x2000000002b0 = 0x40800; syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000280ul, /*f=MSG_BATCH*/ 0x40000ul); // ppoll arguments: [ // fds: ptr[in, array[pollfd]] { // array[pollfd] { // pollfd { // fd: fd (resource) // events: pollfd_events = 0x0 (2 bytes) // revents: const = 0x0 (2 bytes) // } // pollfd { // fd: fd (resource) // events: pollfd_events = 0x0 (2 bytes) // revents: const = 0x0 (2 bytes) // } // } // } // nfds: len = 0x20000000000000dc (8 bytes) // tsp: nil // sigmask: nil // size: len = 0x0 (8 bytes) // ] *(uint32_t*)0x2000000000c0 = -1; *(uint16_t*)0x2000000000c4 = 0; *(uint16_t*)0x2000000000c6 = 0; *(uint32_t*)0x2000000000c8 = -1; *(uint16_t*)0x2000000000cc = 0; *(uint16_t*)0x2000000000ce = 0; syscall(__NR_ppoll, /*fds=*/0x2000000000c0ul, /*nfds=*/0x20000000000000dcul, /*tsp=*/0ul, /*sigmask=*/0ul, /*size=*/0ul); } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000, /*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=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; do_sandbox_none(); return 0; }