| // BUG: unable to handle kernel paging request in do_xdp_generic |
| // https://syzkaller.appspot.com/bug?id=3090a3503c287c8738d77d7d8176ddfb67d0c438 |
| // 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 <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/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> |
| |
| 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; |
| } |
| |
| #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) |
| #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ |
| *(type*)(addr) = \ |
| htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ |
| (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) |
| |
| static bool write_file(const char* file, const char* what, ...) |
| { |
| char buf[1024]; |
| va_list args; |
| va_start(args, what); |
| vsnprintf(buf, sizeof(buf), what, args); |
| va_end(args); |
| buf[sizeof(buf) - 1] = 0; |
| int len = strlen(buf); |
| int fd = open(file, O_WRONLY | O_CLOEXEC); |
| if (fd == -1) |
| return false; |
| if (write(fd, buf, len) != len) { |
| int err = errno; |
| close(fd); |
| errno = err; |
| return false; |
| } |
| close(fd); |
| return true; |
| } |
| |
| struct nlmsg { |
| char* pos; |
| int nesting; |
| struct nlattr* nested[8]; |
| char buf[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 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 void netlink_device_change(struct nlmsg* nlmsg, int sock, |
| const char* name, bool up, const char* master, |
| const void* mac, int macsize, |
| const char* new_name) |
| { |
| struct ifinfomsg hdr; |
| memset(&hdr, 0, sizeof(hdr)); |
| if (up) |
| hdr.ifi_flags = hdr.ifi_change = IFF_UP; |
| hdr.ifi_index = if_nametoindex(name); |
| netlink_init(nlmsg, RTM_NEWLINK, 0, &hdr, sizeof(hdr)); |
| if (new_name) |
| netlink_attr(nlmsg, IFLA_IFNAME, new_name, strlen(new_name)); |
| if (master) { |
| int ifindex = if_nametoindex(master); |
| netlink_attr(nlmsg, IFLA_MASTER, &ifindex, sizeof(ifindex)); |
| } |
| if (macsize) |
| netlink_attr(nlmsg, IFLA_ADDRESS, mac, macsize); |
| int err = netlink_send(nlmsg, sock); |
| (void)err; |
| } |
| |
| static int netlink_add_addr(struct nlmsg* nlmsg, int sock, const char* dev, |
| const void* addr, int addrsize) |
| { |
| struct ifaddrmsg hdr; |
| memset(&hdr, 0, sizeof(hdr)); |
| hdr.ifa_family = addrsize == 4 ? AF_INET : AF_INET6; |
| hdr.ifa_prefixlen = addrsize == 4 ? 24 : 120; |
| hdr.ifa_scope = RT_SCOPE_UNIVERSE; |
| hdr.ifa_index = if_nametoindex(dev); |
| netlink_init(nlmsg, RTM_NEWADDR, NLM_F_CREATE | NLM_F_REPLACE, &hdr, |
| sizeof(hdr)); |
| netlink_attr(nlmsg, IFA_LOCAL, addr, addrsize); |
| netlink_attr(nlmsg, IFA_ADDRESS, addr, addrsize); |
| return netlink_send(nlmsg, sock); |
| } |
| |
| static void netlink_add_addr4(struct nlmsg* nlmsg, int sock, const char* dev, |
| const char* addr) |
| { |
| struct in_addr in_addr; |
| inet_pton(AF_INET, addr, &in_addr); |
| int err = netlink_add_addr(nlmsg, sock, dev, &in_addr, sizeof(in_addr)); |
| (void)err; |
| } |
| |
| static void netlink_add_addr6(struct nlmsg* nlmsg, int sock, const char* dev, |
| const char* addr) |
| { |
| struct in6_addr in6_addr; |
| inet_pton(AF_INET6, addr, &in6_addr); |
| int err = netlink_add_addr(nlmsg, sock, dev, &in6_addr, sizeof(in6_addr)); |
| (void)err; |
| } |
| |
| static void netlink_add_neigh(struct nlmsg* nlmsg, int sock, const char* name, |
| const void* addr, int addrsize, const void* mac, |
| int macsize) |
| { |
| struct ndmsg hdr; |
| memset(&hdr, 0, sizeof(hdr)); |
| hdr.ndm_family = addrsize == 4 ? AF_INET : AF_INET6; |
| hdr.ndm_ifindex = if_nametoindex(name); |
| hdr.ndm_state = NUD_PERMANENT; |
| netlink_init(nlmsg, RTM_NEWNEIGH, NLM_F_EXCL | NLM_F_CREATE, &hdr, |
| sizeof(hdr)); |
| netlink_attr(nlmsg, NDA_DST, addr, addrsize); |
| netlink_attr(nlmsg, NDA_LLADDR, mac, macsize); |
| int err = netlink_send(nlmsg, sock); |
| (void)err; |
| } |
| |
| static int tunfd = -1; |
| static int tun_frags_enabled; |
| |
| #define TUN_IFACE "syz_tun" |
| |
| #define LOCAL_MAC 0xaaaaaaaaaaaa |
| #define REMOTE_MAC 0xaaaaaaaaaabb |
| |
| #define LOCAL_IPV4 "172.20.20.170" |
| #define REMOTE_IPV4 "172.20.20.187" |
| |
| #define LOCAL_IPV6 "fe80::aa" |
| #define REMOTE_IPV6 "fe80::bb" |
| |
| #define IFF_NAPI 0x0010 |
| #define IFF_NAPI_FRAGS 0x0020 |
| |
| static void initialize_tun(void) |
| { |
| tunfd = open("/dev/net/tun", O_RDWR | O_NONBLOCK); |
| if (tunfd == -1) { |
| printf("tun: can't open /dev/net/tun: please enable CONFIG_TUN=y\n"); |
| printf("otherwise fuzzing or reproducing might not work as intended\n"); |
| return; |
| } |
| const int kTunFd = 240; |
| if (dup2(tunfd, kTunFd) < 0) |
| exit(1); |
| close(tunfd); |
| tunfd = kTunFd; |
| struct ifreq ifr; |
| memset(&ifr, 0, sizeof(ifr)); |
| strncpy(ifr.ifr_name, TUN_IFACE, IFNAMSIZ); |
| ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_NAPI | IFF_NAPI_FRAGS; |
| if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) { |
| ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
| if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) |
| exit(1); |
| } |
| if (ioctl(tunfd, TUNGETIFF, (void*)&ifr) < 0) |
| exit(1); |
| tun_frags_enabled = (ifr.ifr_flags & IFF_NAPI_FRAGS) != 0; |
| char sysctl[64]; |
| sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/accept_dad", TUN_IFACE); |
| write_file(sysctl, "0"); |
| sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/router_solicitations", TUN_IFACE); |
| write_file(sysctl, "0"); |
| int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); |
| if (sock == -1) |
| exit(1); |
| netlink_add_addr4(&nlmsg, sock, TUN_IFACE, LOCAL_IPV4); |
| netlink_add_addr6(&nlmsg, sock, TUN_IFACE, LOCAL_IPV6); |
| uint64_t macaddr = REMOTE_MAC; |
| struct in_addr in_addr; |
| inet_pton(AF_INET, REMOTE_IPV4, &in_addr); |
| netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in_addr, sizeof(in_addr), |
| &macaddr, ETH_ALEN); |
| struct in6_addr in6_addr; |
| inet_pton(AF_INET6, REMOTE_IPV6, &in6_addr); |
| netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in6_addr, sizeof(in6_addr), |
| &macaddr, ETH_ALEN); |
| macaddr = LOCAL_MAC; |
| netlink_device_change(&nlmsg, sock, TUN_IFACE, true, 0, &macaddr, ETH_ALEN, |
| NULL); |
| close(sock); |
| } |
| |
| static int read_tun(char* data, int size) |
| { |
| if (tunfd < 0) |
| return -1; |
| int rv = read(tunfd, data, size); |
| if (rv < 0) { |
| if (errno == EAGAIN) |
| return -1; |
| if (errno == EBADFD) |
| return -1; |
| exit(1); |
| } |
| return rv; |
| } |
| |
| #define MAX_FRAGS 4 |
| struct vnet_fragmentation { |
| uint32_t full; |
| uint32_t count; |
| uint32_t frags[MAX_FRAGS]; |
| }; |
| |
| static long syz_emit_ethernet(volatile long a0, volatile long a1, |
| volatile long a2) |
| { |
| if (tunfd < 0) |
| return (uintptr_t)-1; |
| uint32_t length = a0; |
| char* data = (char*)a1; |
| struct vnet_fragmentation* frags = (struct vnet_fragmentation*)a2; |
| struct iovec vecs[MAX_FRAGS + 1]; |
| uint32_t nfrags = 0; |
| if (!tun_frags_enabled || frags == NULL) { |
| vecs[nfrags].iov_base = data; |
| vecs[nfrags].iov_len = length; |
| nfrags++; |
| } else { |
| bool full = true; |
| uint32_t i, count = 0; |
| full = frags->full; |
| count = frags->count; |
| if (count > MAX_FRAGS) |
| count = MAX_FRAGS; |
| for (i = 0; i < count && length != 0; i++) { |
| uint32_t size = 0; |
| size = frags->frags[i]; |
| if (size > length) |
| size = length; |
| vecs[nfrags].iov_base = data; |
| vecs[nfrags].iov_len = size; |
| nfrags++; |
| data += size; |
| length -= size; |
| } |
| if (length != 0 && (full || nfrags == 0)) { |
| vecs[nfrags].iov_base = data; |
| vecs[nfrags].iov_len = length; |
| nfrags++; |
| } |
| } |
| return writev(tunfd, vecs, nfrags); |
| } |
| |
| static void flush_tun() |
| { |
| char data[1000]; |
| while (read_tun(&data[0], sizeof(data)) != -1) { |
| } |
| } |
| |
| #define MAX_FDS 30 |
| |
| static long syz_open_dev(volatile long a0, volatile long a1, volatile long a2) |
| { |
| if (a0 == 0xc || a0 == 0xb) { |
| char buf[128]; |
| sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, |
| (uint8_t)a2); |
| return open(buf, O_RDWR, 0); |
| } else { |
| char buf[1024]; |
| char* hash; |
| strncpy(buf, (char*)a0, sizeof(buf) - 1); |
| buf[sizeof(buf) - 1] = 0; |
| while ((hash = strchr(buf, '#'))) { |
| *hash = '0' + (char)(a1 % 10); |
| a1 /= 10; |
| } |
| return open(buf, a2, 0); |
| } |
| } |
| |
| static void setup_common() |
| { |
| if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { |
| } |
| } |
| |
| static void loop(); |
| |
| static void sandbox_common() |
| { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| setsid(); |
| struct rlimit rlim; |
| rlim.rlim_cur = rlim.rlim_max = (200 << 20); |
| setrlimit(RLIMIT_AS, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 32 << 20; |
| setrlimit(RLIMIT_MEMLOCK, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 136 << 20; |
| setrlimit(RLIMIT_FSIZE, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 1 << 20; |
| setrlimit(RLIMIT_STACK, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 0; |
| setrlimit(RLIMIT_CORE, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 256; |
| setrlimit(RLIMIT_NOFILE, &rlim); |
| if (unshare(CLONE_NEWNS)) { |
| } |
| if (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(); |
| if (unshare(CLONE_NEWNET)) { |
| } |
| initialize_tun(); |
| loop(); |
| 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_test() |
| { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| write_file("/proc/self/oom_score_adj", "1000"); |
| flush_tun(); |
| } |
| |
| static void close_fds() |
| { |
| int fd; |
| for (fd = 3; fd < MAX_FDS; fd++) |
| close(fd); |
| } |
| |
| static void execute_one(void); |
| |
| #define WAIT_FLAGS __WALL |
| |
| static void loop(void) |
| { |
| int iter; |
| for (iter = 0;; iter++) { |
| int pid = fork(); |
| if (pid < 0) |
| exit(1); |
| if (pid == 0) { |
| setup_test(); |
| execute_one(); |
| close_fds(); |
| 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; |
| } |
| } |
| } |
| |
| #ifndef __NR_bpf |
| #define __NR_bpf 321 |
| #endif |
| |
| uint64_t r[1] = {0xffffffffffffffff}; |
| |
| void execute_one(void) |
| { |
| intptr_t res = 0; |
| *(uint8_t*)0x20000000 = 0xaa; |
| *(uint8_t*)0x20000001 = 0xaa; |
| *(uint8_t*)0x20000002 = 0xaa; |
| *(uint8_t*)0x20000003 = 0xaa; |
| *(uint8_t*)0x20000004 = 0xaa; |
| *(uint8_t*)0x20000005 = 0xbb; |
| *(uint8_t*)0x20000006 = 0xaa; |
| *(uint8_t*)0x20000007 = 0xaa; |
| *(uint8_t*)0x20000008 = 0xaa; |
| *(uint8_t*)0x20000009 = 0xaa; |
| *(uint8_t*)0x2000000a = 0xaa; |
| *(uint8_t*)0x2000000b = 0xaa; |
| *(uint16_t*)0x2000000c = htobe16(0x86dd); |
| STORE_BY_BITMASK(uint8_t, , 0x2000000e, 0, 0, 4); |
| STORE_BY_BITMASK(uint8_t, , 0x2000000e, 6, 4, 4); |
| memcpy((void*)0x2000000f, "\xa0\x7e\xac", 3); |
| *(uint16_t*)0x20000012 = htobe16(0); |
| *(uint8_t*)0x20000014 = 0x3c; |
| *(uint8_t*)0x20000015 = 0; |
| *(uint8_t*)0x20000016 = 0; |
| *(uint8_t*)0x20000017 = 0; |
| *(uint8_t*)0x20000018 = 0; |
| *(uint8_t*)0x20000019 = 0; |
| *(uint8_t*)0x2000001a = 0; |
| *(uint8_t*)0x2000001b = 0; |
| *(uint8_t*)0x2000001c = 0; |
| *(uint8_t*)0x2000001d = 0; |
| *(uint8_t*)0x2000001e = 0; |
| *(uint8_t*)0x2000001f = 0; |
| *(uint8_t*)0x20000020 = -1; |
| *(uint8_t*)0x20000021 = -1; |
| *(uint32_t*)0x20000022 = htobe32(0); |
| memcpy((void*)0x20000026, |
| "\x7b\x27\x48\xdb\x02\x27\x7e\xa7\xca\xd0\x97\x05\x4d\xd7\x21\xfc", |
| 16); |
| syz_emit_ethernet(0x36, 0x20000000, 0); |
| syscall(__NR_socket, 0x10ul, 3ul, 0x8000000004ul); |
| syscall(__NR_socket, 1ul, 5ul, 0ul); |
| memcpy((void*)0x20000000, "/dev/input/event#\000", 18); |
| syz_open_dev(0x20000000, 0, 2); |
| *(uint32_t*)0x20000200 = 0xc; |
| *(uint32_t*)0x20000204 = 0xe; |
| *(uint64_t*)0x20000208 = 0x20000500; |
| memcpy((void*)0x20000500, |
| "\xb7\x02\x00\x00\x03\x00\x00\x00\xbf\xa3\x00\x00\x00\x00\x00\x00\x07" |
| "\x03\x00\x00\x00\xfe\xff\xff\x7a\x0a\xf0\xff\xf8\xff\xff\xff\x79\xa4" |
| "\xf0\xff\x00\x00\x00\x00\xb7\x06\x00\x00\xff\xff\xff\xff\x2d\x64\x05" |
| "\x00\x00\x00\x00\x00\x65\x04\x04\x00\x01\x00\x00\x00\x04\x04\x00\x00" |
| "\x01\x00\x7d\x60\xb7\x03\x00\x00\x00\x00\x00\x00\x6a\x0a\x00\xfe\x00" |
| "\x00\x00\x00\x85\x00\x00\x00\x0d\x00\x00\x00\xb7\x00\x00\x00\x00\x00" |
| "\x00\x00\x95\x00\x00\x00\x00\x00\x00\x00\x79\x61\xe6\xf1\x42\x13\x3d" |
| "\x4a\x1c\xac\x53\x81\x9f\xda", |
| 126); |
| *(uint64_t*)0x20000210 = 0x20000340; |
| memcpy((void*)0x20000340, "syzkaller\000", 10); |
| *(uint32_t*)0x20000218 = 0; |
| *(uint32_t*)0x2000021c = 0; |
| *(uint64_t*)0x20000220 = 0; |
| *(uint32_t*)0x20000228 = 0; |
| *(uint32_t*)0x2000022c = 0; |
| *(uint8_t*)0x20000230 = 0; |
| *(uint8_t*)0x20000231 = 0; |
| *(uint8_t*)0x20000232 = 0; |
| *(uint8_t*)0x20000233 = 0; |
| *(uint8_t*)0x20000234 = 0; |
| *(uint8_t*)0x20000235 = 0; |
| *(uint8_t*)0x20000236 = 0; |
| *(uint8_t*)0x20000237 = 0; |
| *(uint8_t*)0x20000238 = 0; |
| *(uint8_t*)0x20000239 = 0; |
| *(uint8_t*)0x2000023a = 0; |
| *(uint8_t*)0x2000023b = 0; |
| *(uint8_t*)0x2000023c = 0; |
| *(uint8_t*)0x2000023d = 0; |
| *(uint8_t*)0x2000023e = 0; |
| *(uint8_t*)0x2000023f = 0; |
| *(uint32_t*)0x20000240 = 0; |
| *(uint32_t*)0x20000244 = 0; |
| *(uint32_t*)0x20000248 = -1; |
| *(uint32_t*)0x2000024c = 8; |
| *(uint64_t*)0x20000250 = 0x20000000; |
| *(uint32_t*)0x20000000 = 0; |
| *(uint32_t*)0x20000004 = 0; |
| *(uint32_t*)0x20000258 = 0; |
| *(uint32_t*)0x2000025c = 0x10; |
| *(uint64_t*)0x20000260 = 0x20000000; |
| *(uint32_t*)0x20000000 = 0; |
| *(uint32_t*)0x20000004 = 0; |
| *(uint32_t*)0x20000008 = 0; |
| *(uint32_t*)0x2000000c = 0; |
| *(uint32_t*)0x20000268 = 0; |
| *(uint32_t*)0x2000026c = 0; |
| *(uint32_t*)0x20000270 = -1; |
| syscall(__NR_bpf, 5ul, 0x20000200ul, 0x48ul); |
| *(uint32_t*)0x20000980 = 1; |
| *(uint32_t*)0x20000984 = 0x70; |
| *(uint8_t*)0x20000988 = 0; |
| *(uint8_t*)0x20000989 = 0; |
| *(uint8_t*)0x2000098a = 0; |
| *(uint8_t*)0x2000098b = 0; |
| *(uint32_t*)0x2000098c = 0; |
| *(uint64_t*)0x20000990 = 0x20; |
| *(uint64_t*)0x20000998 = 0; |
| *(uint64_t*)0x200009a0 = 0; |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 0, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 1, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 2, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 3, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 4, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 5, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 6, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 7, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 8, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 9, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 10, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 11, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 12, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 13, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 14, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 15, 2); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 17, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 18, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 19, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 20, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 21, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 22, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 23, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 24, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 25, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 26, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 27, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 28, 1); |
| STORE_BY_BITMASK(uint64_t, , 0x200009a8, 0, 29, 35); |
| *(uint32_t*)0x200009b0 = 8; |
| *(uint32_t*)0x200009b4 = 1; |
| *(uint64_t*)0x200009b8 = 0; |
| *(uint64_t*)0x200009c0 = 0; |
| *(uint64_t*)0x200009c8 = 0; |
| *(uint64_t*)0x200009d0 = 0; |
| *(uint32_t*)0x200009d8 = 0x81; |
| *(uint32_t*)0x200009dc = 0; |
| *(uint64_t*)0x200009e0 = 0; |
| *(uint32_t*)0x200009e8 = 0; |
| *(uint16_t*)0x200009ec = 0; |
| *(uint16_t*)0x200009ee = 0; |
| syscall(__NR_perf_event_open, 0x20000980ul, 0, 0x3ffffffffffffffful, -1, 0ul); |
| res = syscall(__NR_socket, 0x10ul, 3ul, 0ul); |
| if (res != -1) |
| r[0] = res; |
| syscall(__NR_socket, 0x10ul, 0x80002ul, 0); |
| *(uint32_t*)0x20000180 = 6; |
| *(uint32_t*)0x20000184 = 4; |
| *(uint64_t*)0x20000188 = 0x20000200; |
| *(uint8_t*)0x20000200 = 0x18; |
| STORE_BY_BITMASK(uint8_t, , 0x20000201, 2, 0, 4); |
| STORE_BY_BITMASK(uint8_t, , 0x20000201, 0, 4, 4); |
| *(uint16_t*)0x20000202 = 0; |
| *(uint32_t*)0x20000204 = 0; |
| *(uint8_t*)0x20000208 = 0; |
| *(uint8_t*)0x20000209 = 0; |
| *(uint16_t*)0x2000020a = 0; |
| *(uint32_t*)0x2000020c = 0; |
| *(uint8_t*)0x20000210 = 0x85; |
| *(uint8_t*)0x20000211 = 0; |
| *(uint16_t*)0x20000212 = 0; |
| *(uint32_t*)0x20000214 = 0x2c; |
| *(uint8_t*)0x20000218 = 0x95; |
| *(uint8_t*)0x20000219 = 0; |
| *(uint16_t*)0x2000021a = 0; |
| *(uint32_t*)0x2000021c = 0; |
| *(uint64_t*)0x20000190 = 0x200000c0; |
| memcpy((void*)0x200000c0, "GPL\000", 4); |
| *(uint32_t*)0x20000198 = 4; |
| *(uint32_t*)0x2000019c = 0x1000; |
| *(uint64_t*)0x200001a0 = 0x2062b000; |
| *(uint32_t*)0x200001a8 = 0; |
| *(uint32_t*)0x200001ac = 0; |
| *(uint8_t*)0x200001b0 = 0; |
| *(uint8_t*)0x200001b1 = 0; |
| *(uint8_t*)0x200001b2 = 0; |
| *(uint8_t*)0x200001b3 = 0; |
| *(uint8_t*)0x200001b4 = 0; |
| *(uint8_t*)0x200001b5 = 0; |
| *(uint8_t*)0x200001b6 = 0; |
| *(uint8_t*)0x200001b7 = 0; |
| *(uint8_t*)0x200001b8 = 0; |
| *(uint8_t*)0x200001b9 = 0; |
| *(uint8_t*)0x200001ba = 0; |
| *(uint8_t*)0x200001bb = 0; |
| *(uint8_t*)0x200001bc = 0; |
| *(uint8_t*)0x200001bd = 0; |
| *(uint8_t*)0x200001be = 0; |
| *(uint8_t*)0x200001bf = 0; |
| *(uint32_t*)0x200001c0 = 0; |
| *(uint32_t*)0x200001c4 = 0; |
| *(uint32_t*)0x200001c8 = -1; |
| *(uint32_t*)0x200001cc = 8; |
| *(uint64_t*)0x200001d0 = 0; |
| *(uint32_t*)0x200001d8 = 0; |
| *(uint32_t*)0x200001dc = 0x10; |
| *(uint64_t*)0x200001e0 = 0; |
| *(uint32_t*)0x200001e8 = 0; |
| *(uint32_t*)0x200001ec = 0; |
| *(uint32_t*)0x200001f0 = -1; |
| syscall(__NR_bpf, 5ul, 0x20000180ul, 0x70ul); |
| *(uint64_t*)0x20000140 = 0; |
| *(uint32_t*)0x20000148 = 0; |
| *(uint64_t*)0x20000150 = 0x20000080; |
| *(uint64_t*)0x20000080 = 0x20000640; |
| *(uint32_t*)0x20000640 = 0xa8; |
| *(uint16_t*)0x20000644 = 0x10; |
| *(uint16_t*)0x20000646 = 0x801; |
| *(uint32_t*)0x20000648 = 0; |
| *(uint32_t*)0x2000064c = 0; |
| *(uint8_t*)0x20000650 = 0; |
| *(uint8_t*)0x20000651 = 0; |
| *(uint16_t*)0x20000652 = 0; |
| *(uint32_t*)0x20000654 = 0; |
| *(uint32_t*)0x20000658 = 0; |
| *(uint32_t*)0x2000065c = 0; |
| *(uint16_t*)0x20000660 = 0x80; |
| *(uint16_t*)0x20000662 = 0x2b; |
| *(uint16_t*)0x20000664 = 0x7c; |
| *(uint16_t*)0x20000666 = 1; |
| *(uint32_t*)0x20000668 = 0xa; |
| *(uint32_t*)0x2000066c = 0; |
| *(uint64_t*)0x20000670 = 0; |
| *(uint64_t*)0x20000678 = 0; |
| *(uint32_t*)0x20000680 = 0; |
| *(uint32_t*)0x20000684 = 0; |
| *(uint64_t*)0x20000688 = 0; |
| *(uint32_t*)0x20000690 = 0; |
| *(uint32_t*)0x20000694 = 0; |
| *(uint8_t*)0x20000698 = 0; |
| *(uint8_t*)0x20000699 = 0; |
| *(uint8_t*)0x2000069a = 0; |
| *(uint8_t*)0x2000069b = 0; |
| *(uint8_t*)0x2000069c = 0; |
| *(uint8_t*)0x2000069d = 0; |
| *(uint8_t*)0x2000069e = 0; |
| *(uint8_t*)0x2000069f = 0; |
| *(uint8_t*)0x200006a0 = 0; |
| *(uint8_t*)0x200006a1 = 0; |
| *(uint8_t*)0x200006a2 = 0; |
| *(uint8_t*)0x200006a3 = 0; |
| *(uint8_t*)0x200006a4 = 0; |
| *(uint8_t*)0x200006a5 = 0; |
| *(uint8_t*)0x200006a6 = 0; |
| *(uint8_t*)0x200006a7 = 0; |
| *(uint32_t*)0x200006a8 = 0; |
| *(uint32_t*)0x200006ac = 0; |
| *(uint32_t*)0x200006b0 = -1; |
| *(uint32_t*)0x200006b4 = 8; |
| *(uint64_t*)0x200006b8 = 0; |
| *(uint32_t*)0x200006c0 = 0; |
| *(uint32_t*)0x200006c4 = 0x10; |
| *(uint64_t*)0x200006c8 = 0; |
| *(uint32_t*)0x200006d0 = 0; |
| *(uint32_t*)0x200006d4 = 0; |
| *(uint32_t*)0x200006d8 = -1; |
| *(uint16_t*)0x200006e0 = 8; |
| *(uint16_t*)0x200006e2 = 0x1b; |
| *(uint32_t*)0x200006e4 = 0; |
| *(uint64_t*)0x20000088 = 0xa8; |
| *(uint64_t*)0x20000158 = 1; |
| *(uint64_t*)0x20000160 = 0; |
| *(uint64_t*)0x20000168 = 0; |
| *(uint32_t*)0x20000170 = 0; |
| syscall(__NR_sendmsg, r[0], 0x20000140ul, 0ul); |
| } |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0); |
| do_sandbox_none(); |
| return 0; |
| } |