| // KASAN: use-after-free Read in tcp_check_sack_reordering |
| // https://syzkaller.appspot.com/bug?id=12ab88eb3c8f3d5cf54d41612894c50eb9194d6b |
| // status:open |
| // autogenerated by syzkaller (https://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| |
| #include <arpa/inet.h> |
| #include <dirent.h> |
| #include <endian.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <net/if.h> |
| #include <net/if_arp.h> |
| #include <netinet/in.h> |
| #include <pthread.h> |
| #include <sched.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <stdbool.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/ioctl.h> |
| #include <sys/mount.h> |
| #include <sys/prctl.h> |
| #include <sys/resource.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/uio.h> |
| #include <sys/wait.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| #include <linux/capability.h> |
| #include <linux/futex.h> |
| #include <linux/genetlink.h> |
| #include <linux/if_addr.h> |
| #include <linux/if_ether.h> |
| #include <linux/if_link.h> |
| #include <linux/if_tun.h> |
| #include <linux/in6.h> |
| #include <linux/ip.h> |
| #include <linux/neighbour.h> |
| #include <linux/net.h> |
| #include <linux/netlink.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/tcp.h> |
| #include <linux/veth.h> |
| |
| unsigned long long procid; |
| |
| static void sleep_ms(uint64_t ms) |
| { |
| usleep(ms * 1000); |
| } |
| |
| static uint64_t current_time_ms(void) |
| { |
| struct timespec ts; |
| if (clock_gettime(CLOCK_MONOTONIC, &ts)) |
| exit(1); |
| return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; |
| } |
| |
| static void use_temporary_dir(void) |
| { |
| char tmpdir_template[] = "./syzkaller.XXXXXX"; |
| char* tmpdir = mkdtemp(tmpdir_template); |
| if (!tmpdir) |
| exit(1); |
| if (chmod(tmpdir, 0777)) |
| exit(1); |
| if (chdir(tmpdir)) |
| exit(1); |
| } |
| |
| static void thread_start(void* (*fn)(void*), void* arg) |
| { |
| pthread_t th; |
| pthread_attr_t attr; |
| pthread_attr_init(&attr); |
| pthread_attr_setstacksize(&attr, 128 << 10); |
| int i; |
| for (i = 0; i < 100; i++) { |
| if (pthread_create(&th, &attr, fn, arg) == 0) { |
| pthread_attr_destroy(&attr); |
| return; |
| } |
| if (errno == EAGAIN) { |
| usleep(50); |
| continue; |
| } |
| break; |
| } |
| exit(1); |
| } |
| |
| typedef struct { |
| int state; |
| } event_t; |
| |
| static void event_init(event_t* ev) |
| { |
| ev->state = 0; |
| } |
| |
| static void event_reset(event_t* ev) |
| { |
| ev->state = 0; |
| } |
| |
| static void event_set(event_t* ev) |
| { |
| if (ev->state) |
| exit(1); |
| __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); |
| syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); |
| } |
| |
| static void event_wait(event_t* ev) |
| { |
| while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) |
| syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); |
| } |
| |
| static int event_isset(event_t* ev) |
| { |
| return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); |
| } |
| |
| static int event_timedwait(event_t* ev, uint64_t timeout) |
| { |
| uint64_t start = current_time_ms(); |
| uint64_t now = start; |
| for (;;) { |
| uint64_t remain = timeout - (now - start); |
| struct timespec ts; |
| ts.tv_sec = remain / 1000; |
| ts.tv_nsec = (remain % 1000) * 1000 * 1000; |
| syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); |
| if (__atomic_load_n(&ev->state, __ATOMIC_RELAXED)) |
| return 1; |
| now = current_time_ms(); |
| if (now - start > timeout) |
| return 0; |
| } |
| } |
| |
| static bool write_file(const char* file, const char* what, ...) |
| { |
| char buf[1024]; |
| va_list args; |
| va_start(args, what); |
| vsnprintf(buf, sizeof(buf), what, args); |
| va_end(args); |
| buf[sizeof(buf) - 1] = 0; |
| int len = strlen(buf); |
| int fd = open(file, O_WRONLY | O_CLOEXEC); |
| if (fd == -1) |
| return false; |
| if (write(fd, buf, len) != len) { |
| int err = errno; |
| close(fd); |
| errno = err; |
| return false; |
| } |
| close(fd); |
| return true; |
| } |
| |
| struct nlmsg { |
| char* pos; |
| int nesting; |
| struct nlattr* nested[8]; |
| char buf[1024]; |
| }; |
| |
| static struct nlmsg nlmsg; |
| |
| 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; |
| 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 (hdr->nlmsg_type == NLMSG_DONE) { |
| *reply_len = 0; |
| 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_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; |
| } |
| |
| const int kInitNetNsFd = 239; |
| |
| #define DEVLINK_FAMILY_NAME "devlink" |
| |
| #define DEVLINK_CMD_PORT_GET 5 |
| #define DEVLINK_CMD_RELOAD 37 |
| #define DEVLINK_ATTR_BUS_NAME 1 |
| #define DEVLINK_ATTR_DEV_NAME 2 |
| #define DEVLINK_ATTR_NETDEV_NAME 7 |
| #define DEVLINK_ATTR_NETNS_FD 138 |
| |
| static int netlink_devlink_id_get(struct nlmsg* nlmsg, int sock) |
| { |
| struct genlmsghdr genlhdr; |
| struct nlattr* attr; |
| int err, n; |
| uint16_t id = 0; |
| 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, DEVLINK_FAMILY_NAME, |
| strlen(DEVLINK_FAMILY_NAME) + 1); |
| err = netlink_send_ext(nlmsg, sock, GENL_ID_CTRL, &n); |
| if (err) { |
| return -1; |
| } |
| 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); /* recv ack */ |
| return id; |
| } |
| |
| static void netlink_devlink_netns_move(const char* bus_name, |
| const char* dev_name, int netns_fd) |
| { |
| struct genlmsghdr genlhdr; |
| int sock; |
| int id, err; |
| sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); |
| if (sock == -1) |
| exit(1); |
| id = netlink_devlink_id_get(&nlmsg, sock); |
| if (id == -1) |
| goto error; |
| memset(&genlhdr, 0, sizeof(genlhdr)); |
| genlhdr.cmd = DEVLINK_CMD_RELOAD; |
| netlink_init(&nlmsg, id, 0, &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); |
| netlink_attr(&nlmsg, DEVLINK_ATTR_NETNS_FD, &netns_fd, sizeof(netns_fd)); |
| err = netlink_send(&nlmsg, sock); |
| if (err) { |
| } |
| error: |
| close(sock); |
| } |
| |
| 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_devlink_id_get(&nlmsg, sock); |
| 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) { |
| 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); |
| } |
| |
| static void initialize_devlink_pci(void) |
| { |
| int netns = open("/proc/self/ns/net", O_RDONLY); |
| if (netns == -1) |
| exit(1); |
| int ret = setns(kInitNetNsFd, 0); |
| if (ret == -1) |
| exit(1); |
| netlink_devlink_netns_move("pci", "0000:00:10.0", netns); |
| ret = setns(netns, 0); |
| if (ret == -1) |
| exit(1); |
| close(netns); |
| initialize_devlink_ports("pci", "0000:00:10.0", "netpci"); |
| } |
| |
| #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"); |
| } |
| } |
| 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"}, |
| }; |
| 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}, |
| }; |
| 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); |
| 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); |
| } |
| |
| #define MAX_FDS 30 |
| |
| #define XT_TABLE_SIZE 1536 |
| #define XT_MAX_ENTRIES 10 |
| |
| struct xt_counters { |
| uint64_t pcnt, bcnt; |
| }; |
| |
| struct ipt_getinfo { |
| char name[32]; |
| unsigned int valid_hooks; |
| unsigned int hook_entry[5]; |
| unsigned int underflow[5]; |
| unsigned int num_entries; |
| unsigned int size; |
| }; |
| |
| struct ipt_get_entries { |
| char name[32]; |
| unsigned int size; |
| void* entrytable[XT_TABLE_SIZE / sizeof(void*)]; |
| }; |
| |
| struct ipt_replace { |
| char name[32]; |
| unsigned int valid_hooks; |
| unsigned int num_entries; |
| unsigned int size; |
| unsigned int hook_entry[5]; |
| unsigned int underflow[5]; |
| unsigned int num_counters; |
| struct xt_counters* counters; |
| char entrytable[XT_TABLE_SIZE]; |
| }; |
| |
| struct ipt_table_desc { |
| const char* name; |
| struct ipt_getinfo info; |
| struct ipt_replace replace; |
| }; |
| |
| static struct ipt_table_desc ipv4_tables[] = { |
| {.name = "filter"}, {.name = "nat"}, {.name = "mangle"}, |
| {.name = "raw"}, {.name = "security"}, |
| }; |
| |
| static struct ipt_table_desc ipv6_tables[] = { |
| {.name = "filter"}, {.name = "nat"}, {.name = "mangle"}, |
| {.name = "raw"}, {.name = "security"}, |
| }; |
| |
| #define IPT_BASE_CTL 64 |
| #define IPT_SO_SET_REPLACE (IPT_BASE_CTL) |
| #define IPT_SO_GET_INFO (IPT_BASE_CTL) |
| #define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1) |
| |
| struct arpt_getinfo { |
| char name[32]; |
| unsigned int valid_hooks; |
| unsigned int hook_entry[3]; |
| unsigned int underflow[3]; |
| unsigned int num_entries; |
| unsigned int size; |
| }; |
| |
| struct arpt_get_entries { |
| char name[32]; |
| unsigned int size; |
| void* entrytable[XT_TABLE_SIZE / sizeof(void*)]; |
| }; |
| |
| struct arpt_replace { |
| char name[32]; |
| unsigned int valid_hooks; |
| unsigned int num_entries; |
| unsigned int size; |
| unsigned int hook_entry[3]; |
| unsigned int underflow[3]; |
| unsigned int num_counters; |
| struct xt_counters* counters; |
| char entrytable[XT_TABLE_SIZE]; |
| }; |
| |
| struct arpt_table_desc { |
| const char* name; |
| struct arpt_getinfo info; |
| struct arpt_replace replace; |
| }; |
| |
| static struct arpt_table_desc arpt_tables[] = { |
| {.name = "filter"}, |
| }; |
| |
| #define ARPT_BASE_CTL 96 |
| #define ARPT_SO_SET_REPLACE (ARPT_BASE_CTL) |
| #define ARPT_SO_GET_INFO (ARPT_BASE_CTL) |
| #define ARPT_SO_GET_ENTRIES (ARPT_BASE_CTL + 1) |
| |
| static void checkpoint_iptables(struct ipt_table_desc* tables, int num_tables, |
| int family, int level) |
| { |
| struct ipt_get_entries entries; |
| socklen_t optlen; |
| int fd, i; |
| fd = socket(family, SOCK_STREAM, IPPROTO_TCP); |
| if (fd == -1) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| exit(1); |
| } |
| for (i = 0; i < num_tables; i++) { |
| struct ipt_table_desc* table = &tables[i]; |
| strcpy(table->info.name, table->name); |
| strcpy(table->replace.name, table->name); |
| optlen = sizeof(table->info); |
| if (getsockopt(fd, level, IPT_SO_GET_INFO, &table->info, &optlen)) { |
| switch (errno) { |
| case EPERM: |
| case ENOENT: |
| case ENOPROTOOPT: |
| continue; |
| } |
| exit(1); |
| } |
| if (table->info.size > sizeof(table->replace.entrytable)) |
| exit(1); |
| if (table->info.num_entries > XT_MAX_ENTRIES) |
| exit(1); |
| memset(&entries, 0, sizeof(entries)); |
| strcpy(entries.name, table->name); |
| entries.size = table->info.size; |
| optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size; |
| if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen)) |
| exit(1); |
| table->replace.valid_hooks = table->info.valid_hooks; |
| table->replace.num_entries = table->info.num_entries; |
| table->replace.size = table->info.size; |
| memcpy(table->replace.hook_entry, table->info.hook_entry, |
| sizeof(table->replace.hook_entry)); |
| memcpy(table->replace.underflow, table->info.underflow, |
| sizeof(table->replace.underflow)); |
| memcpy(table->replace.entrytable, entries.entrytable, table->info.size); |
| } |
| close(fd); |
| } |
| |
| static void reset_iptables(struct ipt_table_desc* tables, int num_tables, |
| int family, int level) |
| { |
| struct xt_counters counters[XT_MAX_ENTRIES]; |
| struct ipt_get_entries entries; |
| struct ipt_getinfo info; |
| socklen_t optlen; |
| int fd, i; |
| fd = socket(family, SOCK_STREAM, IPPROTO_TCP); |
| if (fd == -1) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| exit(1); |
| } |
| for (i = 0; i < num_tables; i++) { |
| struct ipt_table_desc* table = &tables[i]; |
| if (table->info.valid_hooks == 0) |
| continue; |
| memset(&info, 0, sizeof(info)); |
| strcpy(info.name, table->name); |
| optlen = sizeof(info); |
| if (getsockopt(fd, level, IPT_SO_GET_INFO, &info, &optlen)) |
| exit(1); |
| if (memcmp(&table->info, &info, sizeof(table->info)) == 0) { |
| memset(&entries, 0, sizeof(entries)); |
| strcpy(entries.name, table->name); |
| entries.size = table->info.size; |
| optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size; |
| if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen)) |
| exit(1); |
| if (memcmp(table->replace.entrytable, entries.entrytable, |
| table->info.size) == 0) |
| continue; |
| } |
| table->replace.num_counters = info.num_entries; |
| table->replace.counters = counters; |
| optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) + |
| table->replace.size; |
| if (setsockopt(fd, level, IPT_SO_SET_REPLACE, &table->replace, optlen)) |
| exit(1); |
| } |
| close(fd); |
| } |
| |
| static void checkpoint_arptables(void) |
| { |
| struct arpt_get_entries entries; |
| socklen_t optlen; |
| unsigned i; |
| int fd; |
| fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
| if (fd == -1) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| exit(1); |
| } |
| for (i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) { |
| struct arpt_table_desc* table = &arpt_tables[i]; |
| strcpy(table->info.name, table->name); |
| strcpy(table->replace.name, table->name); |
| optlen = sizeof(table->info); |
| if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &table->info, &optlen)) { |
| switch (errno) { |
| case EPERM: |
| case ENOENT: |
| case ENOPROTOOPT: |
| continue; |
| } |
| exit(1); |
| } |
| if (table->info.size > sizeof(table->replace.entrytable)) |
| exit(1); |
| if (table->info.num_entries > XT_MAX_ENTRIES) |
| exit(1); |
| memset(&entries, 0, sizeof(entries)); |
| strcpy(entries.name, table->name); |
| entries.size = table->info.size; |
| optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size; |
| if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen)) |
| exit(1); |
| table->replace.valid_hooks = table->info.valid_hooks; |
| table->replace.num_entries = table->info.num_entries; |
| table->replace.size = table->info.size; |
| memcpy(table->replace.hook_entry, table->info.hook_entry, |
| sizeof(table->replace.hook_entry)); |
| memcpy(table->replace.underflow, table->info.underflow, |
| sizeof(table->replace.underflow)); |
| memcpy(table->replace.entrytable, entries.entrytable, table->info.size); |
| } |
| close(fd); |
| } |
| |
| static void reset_arptables() |
| { |
| struct xt_counters counters[XT_MAX_ENTRIES]; |
| struct arpt_get_entries entries; |
| struct arpt_getinfo info; |
| socklen_t optlen; |
| unsigned i; |
| int fd; |
| fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
| if (fd == -1) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| exit(1); |
| } |
| for (i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) { |
| struct arpt_table_desc* table = &arpt_tables[i]; |
| if (table->info.valid_hooks == 0) |
| continue; |
| memset(&info, 0, sizeof(info)); |
| strcpy(info.name, table->name); |
| optlen = sizeof(info); |
| if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &info, &optlen)) |
| exit(1); |
| if (memcmp(&table->info, &info, sizeof(table->info)) == 0) { |
| memset(&entries, 0, sizeof(entries)); |
| strcpy(entries.name, table->name); |
| entries.size = table->info.size; |
| optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size; |
| if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen)) |
| exit(1); |
| if (memcmp(table->replace.entrytable, entries.entrytable, |
| table->info.size) == 0) |
| continue; |
| } else { |
| } |
| table->replace.num_counters = info.num_entries; |
| table->replace.counters = counters; |
| optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) + |
| table->replace.size; |
| if (setsockopt(fd, SOL_IP, ARPT_SO_SET_REPLACE, &table->replace, optlen)) |
| exit(1); |
| } |
| close(fd); |
| } |
| |
| #define NF_BR_NUMHOOKS 6 |
| #define EBT_TABLE_MAXNAMELEN 32 |
| #define EBT_CHAIN_MAXNAMELEN 32 |
| #define EBT_BASE_CTL 128 |
| #define EBT_SO_SET_ENTRIES (EBT_BASE_CTL) |
| #define EBT_SO_GET_INFO (EBT_BASE_CTL) |
| #define EBT_SO_GET_ENTRIES (EBT_SO_GET_INFO + 1) |
| #define EBT_SO_GET_INIT_INFO (EBT_SO_GET_ENTRIES + 1) |
| #define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO + 1) |
| |
| struct ebt_replace { |
| char name[EBT_TABLE_MAXNAMELEN]; |
| unsigned int valid_hooks; |
| unsigned int nentries; |
| unsigned int entries_size; |
| struct ebt_entries* hook_entry[NF_BR_NUMHOOKS]; |
| unsigned int num_counters; |
| struct ebt_counter* counters; |
| char* entries; |
| }; |
| |
| struct ebt_entries { |
| unsigned int distinguisher; |
| char name[EBT_CHAIN_MAXNAMELEN]; |
| unsigned int counter_offset; |
| int policy; |
| unsigned int nentries; |
| char data[0] __attribute__((aligned(__alignof__(struct ebt_replace)))); |
| }; |
| |
| struct ebt_table_desc { |
| const char* name; |
| struct ebt_replace replace; |
| char entrytable[XT_TABLE_SIZE]; |
| }; |
| |
| static struct ebt_table_desc ebt_tables[] = { |
| {.name = "filter"}, {.name = "nat"}, {.name = "broute"}, |
| }; |
| |
| static void checkpoint_ebtables(void) |
| { |
| socklen_t optlen; |
| unsigned i; |
| int fd; |
| fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
| if (fd == -1) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| exit(1); |
| } |
| for (i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) { |
| struct ebt_table_desc* table = &ebt_tables[i]; |
| strcpy(table->replace.name, table->name); |
| optlen = sizeof(table->replace); |
| if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_INFO, &table->replace, |
| &optlen)) { |
| switch (errno) { |
| case EPERM: |
| case ENOENT: |
| case ENOPROTOOPT: |
| continue; |
| } |
| exit(1); |
| } |
| if (table->replace.entries_size > sizeof(table->entrytable)) |
| exit(1); |
| table->replace.num_counters = 0; |
| table->replace.entries = table->entrytable; |
| optlen = sizeof(table->replace) + table->replace.entries_size; |
| if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_ENTRIES, &table->replace, |
| &optlen)) |
| exit(1); |
| } |
| close(fd); |
| } |
| |
| static void reset_ebtables() |
| { |
| struct ebt_replace replace; |
| char entrytable[XT_TABLE_SIZE]; |
| socklen_t optlen; |
| unsigned i, j, h; |
| int fd; |
| fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
| if (fd == -1) { |
| switch (errno) { |
| case EAFNOSUPPORT: |
| case ENOPROTOOPT: |
| return; |
| } |
| exit(1); |
| } |
| for (i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) { |
| struct ebt_table_desc* table = &ebt_tables[i]; |
| if (table->replace.valid_hooks == 0) |
| continue; |
| memset(&replace, 0, sizeof(replace)); |
| strcpy(replace.name, table->name); |
| optlen = sizeof(replace); |
| if (getsockopt(fd, SOL_IP, EBT_SO_GET_INFO, &replace, &optlen)) |
| exit(1); |
| replace.num_counters = 0; |
| table->replace.entries = 0; |
| for (h = 0; h < NF_BR_NUMHOOKS; h++) |
| table->replace.hook_entry[h] = 0; |
| if (memcmp(&table->replace, &replace, sizeof(table->replace)) == 0) { |
| memset(&entrytable, 0, sizeof(entrytable)); |
| replace.entries = entrytable; |
| optlen = sizeof(replace) + replace.entries_size; |
| if (getsockopt(fd, SOL_IP, EBT_SO_GET_ENTRIES, &replace, &optlen)) |
| exit(1); |
| if (memcmp(table->entrytable, entrytable, replace.entries_size) == 0) |
| continue; |
| } |
| for (j = 0, h = 0; h < NF_BR_NUMHOOKS; h++) { |
| if (table->replace.valid_hooks & (1 << h)) { |
| table->replace.hook_entry[h] = |
| (struct ebt_entries*)table->entrytable + j; |
| j++; |
| } |
| } |
| table->replace.entries = table->entrytable; |
| optlen = sizeof(table->replace) + table->replace.entries_size; |
| if (setsockopt(fd, SOL_IP, EBT_SO_SET_ENTRIES, &table->replace, optlen)) |
| exit(1); |
| } |
| close(fd); |
| } |
| |
| static void checkpoint_net_namespace(void) |
| { |
| checkpoint_ebtables(); |
| checkpoint_arptables(); |
| checkpoint_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]), |
| AF_INET, SOL_IP); |
| checkpoint_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]), |
| AF_INET6, SOL_IPV6); |
| } |
| |
| static void reset_net_namespace(void) |
| { |
| reset_ebtables(); |
| reset_arptables(); |
| reset_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]), |
| AF_INET, SOL_IP); |
| reset_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]), |
| AF_INET6, SOL_IPV6); |
| } |
| |
| static void setup_cgroups() |
| { |
| if (mkdir("/syzcgroup", 0777)) { |
| } |
| if (mkdir("/syzcgroup/unified", 0777)) { |
| } |
| if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) { |
| } |
| if (chmod("/syzcgroup/unified", 0777)) { |
| } |
| write_file("/syzcgroup/unified/cgroup.subtree_control", |
| "+cpu +memory +io +pids +rdma"); |
| if (mkdir("/syzcgroup/cpu", 0777)) { |
| } |
| if (mount("none", "/syzcgroup/cpu", "cgroup", 0, |
| "cpuset,cpuacct,perf_event,hugetlb")) { |
| } |
| write_file("/syzcgroup/cpu/cgroup.clone_children", "1"); |
| if (chmod("/syzcgroup/cpu", 0777)) { |
| } |
| if (mkdir("/syzcgroup/net", 0777)) { |
| } |
| if (mount("none", "/syzcgroup/net", "cgroup", 0, |
| "net_cls,net_prio,devices,freezer")) { |
| } |
| if (chmod("/syzcgroup/net", 0777)) { |
| } |
| } |
| |
| static void setup_cgroups_loop() |
| { |
| int pid = getpid(); |
| char file[128]; |
| char cgroupdir[64]; |
| snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid); |
| if (mkdir(cgroupdir, 0777)) { |
| } |
| snprintf(file, sizeof(file), "%s/pids.max", cgroupdir); |
| write_file(file, "32"); |
| snprintf(file, sizeof(file), "%s/memory.low", cgroupdir); |
| write_file(file, "%d", 298 << 20); |
| snprintf(file, sizeof(file), "%s/memory.high", cgroupdir); |
| write_file(file, "%d", 299 << 20); |
| snprintf(file, sizeof(file), "%s/memory.max", cgroupdir); |
| write_file(file, "%d", 300 << 20); |
| snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir); |
| write_file(file, "%d", pid); |
| snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid); |
| if (mkdir(cgroupdir, 0777)) { |
| } |
| snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir); |
| write_file(file, "%d", pid); |
| snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid); |
| if (mkdir(cgroupdir, 0777)) { |
| } |
| snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir); |
| write_file(file, "%d", pid); |
| } |
| |
| static void setup_cgroups_test() |
| { |
| char cgroupdir[64]; |
| snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid); |
| if (symlink(cgroupdir, "./cgroup")) { |
| } |
| snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid); |
| if (symlink(cgroupdir, "./cgroup.cpu")) { |
| } |
| snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid); |
| if (symlink(cgroupdir, "./cgroup.net")) { |
| } |
| } |
| |
| static void setup_common() |
| { |
| if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { |
| } |
| setup_cgroups(); |
| } |
| |
| static void loop(); |
| |
| static void sandbox_common() |
| { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| setsid(); |
| int netns = open("/proc/self/ns/net", O_RDONLY); |
| if (netns == -1) |
| exit(1); |
| if (dup2(netns, kInitNetNsFd) < 0) |
| exit(1); |
| close(netns); |
| 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 (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); |
| } |
| |
| 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_devlink_pci(); |
| initialize_netdevices(); |
| loop(); |
| exit(1); |
| } |
| |
| #define FS_IOC_SETFLAGS _IOW('f', 2, long) |
| static void remove_dir(const char* dir) |
| { |
| DIR* dp; |
| struct dirent* ep; |
| int iter = 0; |
| retry: |
| while (umount2(dir, MNT_DETACH) == 0) { |
| } |
| dp = opendir(dir); |
| if (dp == NULL) { |
| if (errno == EMFILE) { |
| exit(1); |
| } |
| exit(1); |
| } |
| while ((ep = readdir(dp))) { |
| if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) |
| continue; |
| char filename[FILENAME_MAX]; |
| snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); |
| while (umount2(filename, MNT_DETACH) == 0) { |
| } |
| struct stat st; |
| if (lstat(filename, &st)) |
| exit(1); |
| if (S_ISDIR(st.st_mode)) { |
| remove_dir(filename); |
| continue; |
| } |
| int i; |
| for (i = 0;; i++) { |
| if (unlink(filename) == 0) |
| break; |
| if (errno == EPERM) { |
| int fd = open(filename, O_RDONLY); |
| if (fd != -1) { |
| long flags = 0; |
| if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { |
| } |
| close(fd); |
| continue; |
| } |
| } |
| if (errno == EROFS) { |
| break; |
| } |
| if (errno != EBUSY || i > 100) |
| exit(1); |
| if (umount2(filename, MNT_DETACH)) |
| exit(1); |
| } |
| } |
| closedir(dp); |
| int i; |
| for (i = 0;; i++) { |
| if (rmdir(dir) == 0) |
| break; |
| if (i < 100) { |
| if (errno == EPERM) { |
| int fd = open(dir, O_RDONLY); |
| if (fd != -1) { |
| long flags = 0; |
| if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { |
| } |
| close(fd); |
| continue; |
| } |
| } |
| if (errno == EROFS) { |
| break; |
| } |
| if (errno == EBUSY) { |
| if (umount2(dir, MNT_DETACH)) |
| exit(1); |
| continue; |
| } |
| if (errno == ENOTEMPTY) { |
| if (iter < 100) { |
| iter++; |
| goto retry; |
| } |
| } |
| } |
| exit(1); |
| } |
| } |
| |
| static void kill_and_wait(int pid, int* status) |
| { |
| kill(-pid, SIGKILL); |
| kill(pid, SIGKILL); |
| int i; |
| for (i = 0; i < 100; i++) { |
| if (waitpid(-1, status, WNOHANG | __WALL) == pid) |
| return; |
| usleep(1000); |
| } |
| DIR* dir = opendir("/sys/fs/fuse/connections"); |
| if (dir) { |
| for (;;) { |
| struct dirent* ent = readdir(dir); |
| if (!ent) |
| break; |
| if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) |
| continue; |
| char abort[300]; |
| snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", |
| ent->d_name); |
| int fd = open(abort, O_WRONLY); |
| if (fd == -1) { |
| continue; |
| } |
| if (write(fd, abort, 1) < 0) { |
| } |
| close(fd); |
| } |
| closedir(dir); |
| } else { |
| } |
| while (waitpid(-1, status, __WALL) != pid) { |
| } |
| } |
| |
| static void setup_loop() |
| { |
| setup_cgroups_loop(); |
| checkpoint_net_namespace(); |
| } |
| |
| static void reset_loop() |
| { |
| reset_net_namespace(); |
| } |
| |
| static void setup_test() |
| { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| setup_cgroups_test(); |
| write_file("/proc/self/oom_score_adj", "1000"); |
| } |
| |
| static void close_fds() |
| { |
| int fd; |
| for (fd = 3; fd < MAX_FDS; fd++) |
| close(fd); |
| } |
| |
| static void setup_binfmt_misc() |
| { |
| if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0)) { |
| } |
| write_file("/proc/sys/fs/binfmt_misc/register", ":syz0:M:0:\x01::./file0:"); |
| write_file("/proc/sys/fs/binfmt_misc/register", |
| ":syz1:M:1:\x02::./file0:POC"); |
| } |
| |
| struct thread_t { |
| int created, call; |
| event_t ready, done; |
| }; |
| |
| static struct thread_t threads[16]; |
| static void execute_call(int call); |
| static int running; |
| |
| static void* thr(void* arg) |
| { |
| struct thread_t* th = (struct thread_t*)arg; |
| for (;;) { |
| event_wait(&th->ready); |
| event_reset(&th->ready); |
| execute_call(th->call); |
| __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); |
| event_set(&th->done); |
| } |
| return 0; |
| } |
| |
| static void execute_one(void) |
| { |
| int i, call, thread; |
| for (call = 0; call < 15; call++) { |
| for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); |
| thread++) { |
| struct thread_t* th = &threads[thread]; |
| if (!th->created) { |
| th->created = 1; |
| event_init(&th->ready); |
| event_init(&th->done); |
| event_set(&th->done); |
| thread_start(thr, th); |
| } |
| if (!event_isset(&th->done)) |
| continue; |
| event_reset(&th->done); |
| th->call = call; |
| __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); |
| event_set(&th->ready); |
| event_timedwait(&th->done, 45); |
| break; |
| } |
| } |
| for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) |
| sleep_ms(1); |
| close_fds(); |
| } |
| |
| static void execute_one(void); |
| |
| #define WAIT_FLAGS __WALL |
| |
| static void loop(void) |
| { |
| setup_loop(); |
| int iter; |
| for (iter = 0;; iter++) { |
| char cwdbuf[32]; |
| sprintf(cwdbuf, "./%d", iter); |
| if (mkdir(cwdbuf, 0777)) |
| exit(1); |
| reset_loop(); |
| int pid = fork(); |
| if (pid < 0) |
| exit(1); |
| if (pid == 0) { |
| if (chdir(cwdbuf)) |
| exit(1); |
| setup_test(); |
| execute_one(); |
| exit(0); |
| } |
| int status = 0; |
| uint64_t start = current_time_ms(); |
| for (;;) { |
| if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) |
| break; |
| sleep_ms(1); |
| if (current_time_ms() - start < 5 * 1000) |
| continue; |
| kill_and_wait(pid, &status); |
| break; |
| } |
| remove_dir(cwdbuf); |
| } |
| } |
| |
| uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; |
| |
| void execute_call(int call) |
| { |
| intptr_t res; |
| switch (call) { |
| case 0: |
| *(uint64_t*)0x200001c0 = 0; |
| *(uint32_t*)0x200001c8 = 0; |
| *(uint64_t*)0x200001d0 = 0; |
| *(uint64_t*)0x200001d8 = 8; |
| *(uint64_t*)0x200001e0 = 0; |
| *(uint64_t*)0x200001e8 = 0; |
| *(uint32_t*)0x200001f0 = 0; |
| syscall(__NR_sendmsg, -1, 0x200001c0ul, 0ul); |
| break; |
| case 1: |
| res = syscall(__NR_socket, 2ul, 1ul, 0ul); |
| if (res != -1) |
| r[0] = res; |
| break; |
| case 2: |
| *(uint32_t*)0x20000040 = 1; |
| syscall(__NR_setsockopt, r[0], 6ul, 0x210000000013ul, 0x20000040ul, 4ul); |
| break; |
| case 3: |
| *(uint16_t*)0x20000080 = 2; |
| *(uint16_t*)0x20000082 = htobe16(0x4e21); |
| *(uint8_t*)0x20000084 = 0xac; |
| *(uint8_t*)0x20000085 = 0x14; |
| *(uint8_t*)0x20000086 = 0x14; |
| *(uint8_t*)0x20000087 = 0xaa; |
| syscall(__NR_bind, r[0], 0x20000080ul, 0x10ul); |
| break; |
| case 4: |
| *(uint16_t*)0x20000180 = 2; |
| *(uint16_t*)0x20000182 = htobe16(0x4e21); |
| *(uint8_t*)0x20000184 = 0xac; |
| *(uint8_t*)0x20000185 = 0x14; |
| *(uint8_t*)0x20000186 = 0x14; |
| *(uint8_t*)0x20000187 = 0xaa; |
| syscall(__NR_connect, r[0], 0x20000180ul, 0x10ul); |
| break; |
| case 5: |
| memcpy((void*)0x20000240, "\xac\x1e\x13\x01\xac\x1e\x00\x01\x03\x00\x00\x00" |
| "\x04\x00\x00\x00\xac\x1e\x00\x01", |
| 20); |
| syscall(__NR_setsockopt, -1, 0ul, 0x29ul, 0x20000240ul, 0x14ul); |
| break; |
| case 6: |
| res = syscall(__NR_socket, 2ul, 0x4000000000000001ul, 0); |
| if (res != -1) |
| r[1] = res; |
| break; |
| case 7: |
| *(uint16_t*)0x20000280 = 2; |
| *(uint16_t*)0x20000282 = htobe16(0x4e23); |
| *(uint32_t*)0x20000284 = htobe32(0xe0000001); |
| syscall(__NR_bind, r[1], 0x20000280ul, 0x10ul); |
| break; |
| case 8: |
| *(uint16_t*)0x20000040 = 2; |
| *(uint16_t*)0x20000042 = htobe16(0x4e23); |
| *(uint32_t*)0x20000044 = htobe32(0); |
| syscall(__NR_sendto, r[1], 0ul, 0x74ul, 0x200087bdul, 0x20000040ul, 0x10ul); |
| break; |
| case 9: |
| memcpy((void*)0x20000000, "\f", 1); |
| syscall(__NR_sendto, r[1], 0x20000000ul, 0xfb386d1f6a4fd57dul, 0x400800aul, |
| 0ul, 0xae19fea218018fdul); |
| break; |
| case 10: |
| syscall(__NR_recvfrom, r[1], 0x20000080ul, 0xfffffffffffffe6aul, 0xf00ul, |
| 0ul, 0xb84608a41099d4b8ul); |
| break; |
| case 11: |
| syscall(__NR_setsockopt, r[0], 6ul, 0x16ul, 0x20000240ul, 0xb2ul); |
| break; |
| case 12: |
| *(uint32_t*)0x20000200 = 0; |
| syscall(__NR_setsockopt, r[0], 6ul, 0x13ul, 0x20000200ul, 0x88ul); |
| break; |
| case 13: |
| memcpy( |
| (void*)0x20000640, |
| "\xe0\x46\x38\x57\x38\xd0\xb6\xe2\xf1\x70\x50\xc3\x00\x2a\x9f\xe3\xe2" |
| "\xf4\xbb\xc2\x26\xe3\x9b\xf3\x52\x04\xd2\x75\xa8\xfa\xdd\xe3\x7a\xab" |
| "\x39\x05\xbb\xac\xaf\x04\xd5\x7f\xb2\x46\xd6\x60\xea\x69\xd7\x55\xb5" |
| "\xfa\x4e\x9d\xcd\xda\x99\x19\xe7\xcf\xdd\x2f\xd6\xf2\xff\xd8\xca\x8b" |
| "\x45\x0d\x8b\x06\x46\xe2\xd9\x36\x3d\x42\xc0\x96\xc6\x30\xe5\x7a\x2b" |
| "\xfd\x2c\x36\xce\xc6\x95\x82\x14\x37\xe9\xd3\x55\x4f\x3e\xb5\xc0\x48" |
| "\x23\x6b\x4b\x4a\xdb\x7e\x30\x2a\x15\x88\xfa\x2d\xaa\x01\x01\x00\x00" |
| "\x00\x00\x00\x00\xf3\x8f\xe3\xb4\xbd\xed\x81\x20\x7e\xfe\x8f\xd9\x87" |
| "\xbd\x3b\x2c\xc7\x6b\x79\xde\xb9\x6d\xf1\x3c\x54\x56\x63\x0d\x4c\xfb" |
| "\x85\x8f\x6d\xbc\xdd\x4f\x19\x9a\x51\x64\xba\x2f\xde\x00\x14\xd7\xf9" |
| "\x8d\x92\x51\xbb\xc0\x7b\xca\x2b\x67\x10\x30\x8d\xdd\xc5\x40\xdf\xb4" |
| "\x4b\x0f\x9a\x5f\x27\xd7\x3e\x1c\x33\xd0\x91\xce\x5c\x7f\x8e\x57\x29" |
| "\x11\x12\x23\x1b\x05\x1a\x2a\xf6\x34\xf3\x81\x20\x3b\x6b\x98\xcb\x0c" |
| "\x0a\x12\x91\xbd\x09\x4e\x86\x10\x61\xa5\xa7\xcd\x47\x77\xd4\x47\x69" |
| "\x0e\x4c\xe2\xc0\x7c\x13\xe8\xbe\x18\x01\x40\x70\x68\x13\x95\xd0\xb0" |
| "\xc3\x85\xe3\x9c\xe7\xd4\x22\x63\x72\x55\xc6\xd1\x32\x29\xf2\x80\xb5" |
| "\x70\x64\xba\x62\xd5\x2e\x7b\xfe\x69\x5f\x75\xde\x48\x54\xfd\xef\x56" |
| "\xf9\x3c\xa9\xd2\x37\x17\x5a\xa0\x19\x7b\x0e\x68\x50\xbd\x41\x58\x66" |
| "\x6d\x28\x00\x6d\xa6\xa3\x53\x62\xb2\x9e\xd6\x89\x55\x07\xab\x40\x64" |
| "\xc7\xfc\xec\xe1\x2d\xfb\x94\x11\xb1\x27\x40\x80\x91\x5c\x0d\x3a\x12" |
| "\x4a\xe1\xb7\x7b\xe2\xd7\xc8\xc9\xc8\x6c\x4d\x7a\x75\x89\xd7\xfc\x9c" |
| "\x92\x2a\xc8\x4b\x41\x1d\x0c\x21\x98\x16\xf5\x86\xb6\xfc\x7d\x24\x52" |
| "\xff\x4c\x5e\xb6\x4f\x91\x35\x98\x96\x8c\xfa\xe6\xf3\x0f\xb0\xdc\x0e" |
| "\xe0\x88\x65\x73\x9e\xd8\xae\xf2\x7a\x1d\x97\x38\x60\x53\x1a\xe8\xa8" |
| "\xc5\xdd\x62\x63\xe6\x90\xa5\xbe\x08\xe6\x73\x2a\x2d\x52\x6a\x64\x55" |
| "\xab\x9a\x9f\xcd\x36\x14\x04\x62\x02\x14\x16\xcc\x8d\x43\xc5\xb0\x92" |
| "\x15\xd8\xe4\xc2\x21\xea\x58\xfc\x69\x74\xed\xb8\xe2\x58\xc7\x38\x81" |
| "\x1f\x52\x3b\x25\xc3\xd9\x4c\x91\xb7\xd0\x80\xb5\x46\x6c\xbe\x69\x9b" |
| "\x21\x23\xca\xc0\x24\x30\xe0\x1d\x4b\x57\xc0\xdc\x79\x42\x68\xf9\xb1" |
| "\x72\x69\x47\x45\x67\x8f\xcc\x68\xc5\x69\xd0\x1e\x82\x11\x13\xd7\x6b" |
| "\x09\x0a\xc0\x74\x0c\xd3\x5f\x82\xbf\xc0\x27\xbf\xd5\x00\x90\x4b\xc6" |
| "\x2e\x26\x0d\xc9\xd6\x0d\x15\x45\x39\x61\x41\xcf\xf6\x1b\xf7\x20\xd5" |
| "\xaf\xf1\x8c\x58\x27\x8c\xc2\x77\x8e\xae\x68\xf3\xea\xd5\x3a\x4a\xda" |
| "\xe3\xb6\x8c\x53\x44\xc3\xa9\x82\x93\x9d\x84\x66\x1a\x04\x26\x22\xfc" |
| "\x94\x14\xee\x87\x3a\x78\x54\x82\x99\x34\x0d\x8f\xde\xf8\x79\x80\x2c" |
| "\x63\x64\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", |
| 611); |
| syscall(__NR_sendto, r[0], 0x20000640ul, 0xffffffffffffff67ul, 0x40007bdul, |
| 0ul, 0xffffffffffffff4ful); |
| break; |
| case 14: |
| syscall(__NR_recvfrom, r[0], 0x200198c0ul, 0x19000ul, 0ul, 0ul, 0x3eul); |
| break; |
| } |
| } |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0); |
| setup_binfmt_misc(); |
| for (procid = 0; procid < 6; procid++) { |
| if (fork() == 0) { |
| use_temporary_dir(); |
| do_sandbox_none(); |
| } |
| } |
| sleep(1000000); |
| return 0; |
| } |