// https://syzkaller.appspot.com/bug?id=4338bfa84aa46127b82534abeb9c0cd0125c09bb // 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 static unsigned long long procid; static __thread int clone_ongoing; static __thread int skip_segv; static __thread jmp_buf segv_env; static void segv_handler(int sig, siginfo_t* info, void* ctx) { if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) { exit(sig); } uintptr_t addr = (uintptr_t)info->si_addr; const uintptr_t prog_start = 1 << 20; const uintptr_t prog_end = 100 << 20; int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0; int valid = addr < prog_start || addr > prog_end; if (skip && valid) { _longjmp(segv_env, 1); } exit(sig); } static void install_segv_handler(void) { struct sigaction sa; memset(&sa, 0, sizeof(sa)); sa.sa_handler = SIG_IGN; syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8); syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8); memset(&sa, 0, sizeof(sa)); sa.sa_sigaction = segv_handler; sa.sa_flags = SA_NODEFER | SA_SIGINFO; sigaction(SIGSEGV, &sa, NULL); sigaction(SIGBUS, &sa, NULL); } #define NONFAILING(...) \ ({ \ int ok = 1; \ __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \ if (_setjmp(segv_env) == 0) { \ __VA_ARGS__; \ } else \ ok = 0; \ __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \ ok; \ }) 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); } #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static bool write_file(const char* file, const char* what, ...) { char buf[1024]; va_list args; va_start(args, what); vsnprintf(buf, sizeof(buf), what, args); va_end(args); buf[sizeof(buf) - 1] = 0; int len = strlen(buf); int fd = open(file, O_WRONLY | O_CLOEXEC); if (fd == -1) return false; if (write(fd, buf, len) != len) { int err = errno; close(fd); errno = err; return false; } close(fd); return true; } struct nlmsg { char* pos; int nesting; struct nlattr* nested[8]; char buf[4096]; }; static void netlink_init(struct nlmsg* nlmsg, int typ, int flags, const void* data, int size) { memset(nlmsg, 0, sizeof(*nlmsg)); struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf; hdr->nlmsg_type = typ; hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags; memcpy(hdr + 1, data, size); nlmsg->pos = (char*)(hdr + 1) + NLMSG_ALIGN(size); } static void netlink_attr(struct nlmsg* nlmsg, int typ, const void* data, int size) { struct nlattr* attr = (struct nlattr*)nlmsg->pos; attr->nla_len = sizeof(*attr) + size; attr->nla_type = typ; if (size > 0) memcpy(attr + 1, data, size); nlmsg->pos += NLMSG_ALIGN(attr->nla_len); } static 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 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_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 struct nlmsg nlmsg; #define FS_IOC_SETFLAGS _IOW('f', 2, long) static void remove_dir(const char* dir) { int iter = 0; DIR* dp = 0; retry: while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) { } dp = opendir(dir); if (dp == NULL) { if (errno == EMFILE) { exit(1); } exit(1); } struct dirent* ep = 0; 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 | UMOUNT_NOFOLLOW) == 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 | UMOUNT_NOFOLLOW)) exit(1); } } closedir(dp); for (int 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 | UMOUNT_NOFOLLOW)) 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); for (int 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"); if (symlink("/dev/binderfs", "./binderfs")) { } } static void setup_sysctl() { char mypid[32]; snprintf(mypid, sizeof(mypid), "%d", getpid()); struct { const char* name; const char* data; } files[] = { {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"}, {"/proc/sys/kernel/hung_task_check_interval_secs", "20"}, {"/proc/sys/net/core/bpf_jit_kallsyms", "1"}, {"/proc/sys/net/core/bpf_jit_harden", "0"}, {"/proc/sys/kernel/kptr_restrict", "0"}, {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"}, {"/proc/sys/fs/mount-max", "100"}, {"/proc/sys/vm/oom_dump_tasks", "0"}, {"/proc/sys/debug/exception-trace", "0"}, {"/proc/sys/kernel/printk", "7 4 1 3"}, {"/proc/sys/net/ipv4/ping_group_range", "0 65535"}, {"/proc/sys/kernel/keys/gc_delay", "1"}, {"/proc/sys/vm/oom_kill_allocating_task", "1"}, {"/proc/sys/kernel/ctrl-alt-del", "0"}, {"/proc/sys/kernel/cad_pid", mypid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) printf("write to %s failed: %s\n", files[i].name, strerror(errno)); } } #define NL802154_CMD_SET_SHORT_ADDR 11 #define NL802154_ATTR_IFINDEX 3 #define NL802154_ATTR_SHORT_ADDR 10 static void setup_802154() { int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (sock_route == -1) exit(1); int sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); if (sock_generic < 0) exit(1); int nl802154_family_id = netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true); for (int i = 0; i < 2; i++) { char devname[] = "wpan0"; devname[strlen(devname) - 1] += i; uint64_t hwaddr = 0xaaaaaaaaaaaa0002 + (i << 8); uint16_t shortaddr = 0xaaa0 + i; int ifindex = if_nametoindex(devname); struct genlmsghdr genlhdr; memset(&genlhdr, 0, sizeof(genlhdr)); genlhdr.cmd = NL802154_CMD_SET_SHORT_ADDR; netlink_init(&nlmsg, nl802154_family_id, 0, &genlhdr, sizeof(genlhdr)); netlink_attr(&nlmsg, NL802154_ATTR_IFINDEX, &ifindex, sizeof(ifindex)); netlink_attr(&nlmsg, NL802154_ATTR_SHORT_ADDR, &shortaddr, sizeof(shortaddr)); int err = netlink_send(&nlmsg, sock_generic); if (err < 0) { } netlink_device_change(&nlmsg, sock_route, devname, true, 0, &hwaddr, sizeof(hwaddr), 0); if (i == 0) { netlink_add_device_impl(&nlmsg, "lowpan", "lowpan0"); netlink_done(&nlmsg); netlink_attr(&nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex)); int err = netlink_send(&nlmsg, sock_route); if (err < 0) { } } } close(sock_route); close(sock_generic); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); 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 < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[8] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; res = syscall(__NR_socket, 0x10ul, 3ul, 0); if (res != -1) r[0] = res; res = syscall(__NR_socket, 0x10ul, 0x803ul, 0); if (res != -1) r[1] = res; NONFAILING(*(uint64_t*)0x20000640 = 0); NONFAILING(*(uint32_t*)0x20000648 = 0); NONFAILING(*(uint64_t*)0x20000650 = 0x20000480); NONFAILING(*(uint64_t*)0x20000480 = 0x20000400); NONFAILING(*(uint32_t*)0x20000400 = 0x1c); NONFAILING(*(uint16_t*)0x20000404 = 0x5e); NONFAILING(*(uint16_t*)0x20000406 = 0x200); NONFAILING(*(uint32_t*)0x20000408 = 0x70bd2b); NONFAILING(*(uint32_t*)0x2000040c = 0x25dfdbfc); NONFAILING(*(uint8_t*)0x20000410 = 0); NONFAILING(*(uint8_t*)0x20000411 = 0); NONFAILING(*(uint16_t*)0x20000412 = 0); NONFAILING(*(uint32_t*)0x20000414 = 0); NONFAILING(*(uint32_t*)0x20000418 = 0); NONFAILING(*(uint64_t*)0x20000488 = 0x1c); NONFAILING(*(uint64_t*)0x20000658 = 1); NONFAILING(*(uint64_t*)0x20000660 = 0); NONFAILING(*(uint64_t*)0x20000668 = 0); NONFAILING(*(uint32_t*)0x20000670 = 0); syscall(__NR_sendmsg, r[1], 0x20000640ul, 0ul); NONFAILING(*(uint32_t*)0x20000200 = 0x14); res = syscall(__NR_getsockname, r[1], 0x20000100ul, 0x20000200ul); if (res != -1) NONFAILING(r[2] = *(uint32_t*)0x20000104); NONFAILING(*(uint64_t*)0x200003c0 = 0); NONFAILING(*(uint32_t*)0x200003c8 = 0); NONFAILING(*(uint64_t*)0x200003d0 = 0x20000000); NONFAILING(*(uint64_t*)0x20000000 = 0x20000380); NONFAILING(memcpy((void*)0x20000380, "\x3c\x00\x00\x00\x10\x00\x85\x46\x00\x00\x00\x00\x00\x00" "\xff\x01\x00\x00\x00\x00", 20)); NONFAILING(*(uint32_t*)0x20000394 = r[2]); NONFAILING(memcpy( (void*)0x20000398, "\x01\x00\x00\x00\x00\x22\x00\x00\x1c\x00\x12\x00\x0c\x00\x01\x00\x62\x6f" "\x6e\x64\x00\x00\x00\x00\x0c\x00\x02\x00\x08\x00\x01\x00\x06", 33)); NONFAILING(*(uint64_t*)0x20000008 = 0x3c); NONFAILING(*(uint64_t*)0x200003d8 = 1); NONFAILING(*(uint64_t*)0x200003e0 = 0); NONFAILING(*(uint64_t*)0x200003e8 = 0); NONFAILING(*(uint32_t*)0x200003f0 = 0); syscall(__NR_sendmsg, r[0], 0x200003c0ul, 0ul); res = syscall(__NR_socket, 0x10ul, 3ul, 0); if (res != -1) r[3] = res; NONFAILING(*(uint32_t*)0x20000440 = 0x14); res = syscall(__NR_getsockname, r[1], 0x20000500ul, 0x20000440ul); if (res != -1) NONFAILING(r[4] = *(uint32_t*)0x20000504); res = syscall(__NR_socket, 0x10ul, 3ul, 0); if (res != -1) r[5] = res; NONFAILING(*(uint32_t*)0x20000280 = 0x14); res = syscall(__NR_getsockname, r[1], 0x20000100ul, 0x20000280ul); if (res != -1) NONFAILING(r[6] = *(uint32_t*)0x20000104); NONFAILING(*(uint64_t*)0x20000080 = 0); NONFAILING(*(uint32_t*)0x20000088 = 0); NONFAILING(*(uint64_t*)0x20000090 = 0x20000040); NONFAILING(*(uint64_t*)0x20000040 = 0x200000c0); NONFAILING(*(uint32_t*)0x200000c0 = 0x28); NONFAILING(*(uint16_t*)0x200000c4 = 0x10); NONFAILING(*(uint16_t*)0x200000c6 = 0x825); NONFAILING(*(uint32_t*)0x200000c8 = 0); NONFAILING(*(uint32_t*)0x200000cc = 0); NONFAILING(*(uint8_t*)0x200000d0 = 0x53); NONFAILING(*(uint8_t*)0x200000d1 = 0); NONFAILING(*(uint16_t*)0x200000d2 = 0); NONFAILING(*(uint32_t*)0x200000d4 = r[6]); NONFAILING(*(uint32_t*)0x200000d8 = 0); NONFAILING(*(uint32_t*)0x200000dc = 0); NONFAILING(*(uint16_t*)0x200000e0 = 8); NONFAILING(*(uint16_t*)0x200000e2 = 0xa); NONFAILING(*(uint8_t*)0x200000e4 = 0xf); NONFAILING(*(uint64_t*)0x20000048 = 0x28); NONFAILING(*(uint64_t*)0x20000098 = 1); NONFAILING(*(uint64_t*)0x200000a0 = 0); NONFAILING(*(uint64_t*)0x200000a8 = 0); NONFAILING(*(uint32_t*)0x200000b0 = 0); syscall(__NR_sendmsg, r[5], 0x20000080ul, 0ul); NONFAILING(*(uint64_t*)0x20000240 = 0); NONFAILING(*(uint32_t*)0x20000248 = 0); NONFAILING(*(uint64_t*)0x20000250 = 0x20000140); NONFAILING(*(uint64_t*)0x20000140 = 0x20000780); NONFAILING(*(uint32_t*)0x20000780 = 0x54); NONFAILING(*(uint16_t*)0x20000784 = 0x10); NONFAILING(*(uint16_t*)0x20000786 = 0x401); NONFAILING(*(uint32_t*)0x20000788 = 0); NONFAILING(*(uint32_t*)0x2000078c = 0); NONFAILING(*(uint8_t*)0x20000790 = 0); NONFAILING(*(uint8_t*)0x20000791 = 0); NONFAILING(*(uint16_t*)0x20000792 = 0); NONFAILING(*(uint32_t*)0x20000794 = 0); NONFAILING(*(uint32_t*)0x20000798 = 0); NONFAILING(*(uint32_t*)0x2000079c = 0); NONFAILING(*(uint16_t*)0x200007a0 = 0x24); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x200007a2, 0x12, 0, 14)); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x200007a3, 0, 6, 1)); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x200007a3, 1, 7, 1)); NONFAILING(*(uint16_t*)0x200007a4 = 9); NONFAILING(*(uint16_t*)0x200007a6 = 1); NONFAILING(memcpy((void*)0x200007a8, "xfrm\000", 5)); NONFAILING(*(uint16_t*)0x200007b0 = 0x14); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x200007b2, 2, 0, 14)); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x200007b3, 0, 6, 1)); NONFAILING(STORE_BY_BITMASK(uint16_t, , 0x200007b3, 1, 7, 1)); NONFAILING(*(uint16_t*)0x200007b4 = 8); NONFAILING(*(uint16_t*)0x200007b6 = 2); NONFAILING(*(uint32_t*)0x200007b8 = 2); NONFAILING(*(uint16_t*)0x200007bc = 0xffd0); NONFAILING(*(uint16_t*)0x200007be = 1); NONFAILING(*(uint32_t*)0x200007c0 = 4); NONFAILING(*(uint16_t*)0x200007c4 = 8); NONFAILING(*(uint16_t*)0x200007c6 = 5); NONFAILING(*(uint32_t*)0x200007c8 = 0); NONFAILING(*(uint16_t*)0x200007cc = 8); NONFAILING(*(uint16_t*)0x200007ce = 0xa); NONFAILING(*(uint32_t*)0x200007d0 = r[4]); NONFAILING(*(uint64_t*)0x20000148 = 0x54); NONFAILING(*(uint64_t*)0x20000258 = 1); NONFAILING(*(uint64_t*)0x20000260 = 0); NONFAILING(*(uint64_t*)0x20000268 = 0); NONFAILING(*(uint32_t*)0x20000270 = 0); syscall(__NR_sendmsg, r[3], 0x20000240ul, 0ul); NONFAILING(memcpy((void*)0x20000040, "freezer.self_freezing\000", 22)); res = syscall(__NR_openat, 0xffffff9c, 0x20000040ul, 0x26e1ul, 0ul); if (res != -1) r[7] = res; NONFAILING(*(uint16_t*)0x20000000 = 0); NONFAILING(*(uint16_t*)0x20000002 = 0); NONFAILING(*(uint64_t*)0x20000008 = 0x61bf); NONFAILING(*(uint64_t*)0x20000010 = 0x1c2dbffff); NONFAILING(*(uint32_t*)0x20000018 = 0); NONFAILING(*(uint32_t*)0x2000001c = 0); NONFAILING(memset((void*)0x20000020, 0, 16)); syscall(__NR_ioctl, r[7], 0x40305828, 0x20000000ul); } int main(void) { syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); setup_sysctl(); setup_802154(); install_segv_handler(); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }