// https://syzkaller.appspot.com/bug?id=8f1f59644e34eb2b3343cdc35ffe79f725baf5db // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif static 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 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, bool up) { struct ifinfomsg hdr; memset(&hdr, 0, sizeof(hdr)); if (up) hdr.ifi_flags = hdr.ifi_change = IFF_UP; netlink_init(nlmsg, RTM_NEWLINK, NLM_F_EXCL | NLM_F_CREATE, &hdr, sizeof(hdr)); if (name) netlink_attr(nlmsg, IFLA_IFNAME, name, strlen(name)); netlink_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; 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); } } //% This code is derived from puff.{c,h}, found in the zlib development. The //% original files come with the following copyright notice: //% Copyright (C) 2002-2013 Mark Adler, all rights reserved //% version 2.3, 21 Jan 2013 //% This software is provided 'as-is', without any express or implied //% warranty. In no event will the author be held liable for any damages //% arising from the use of this software. //% Permission is granted to anyone to use this software for any purpose, //% including commercial applications, and to alter it and redistribute it //% freely, subject to the following restrictions: //% 1. The origin of this software must not be misrepresented; you must not //% claim that you wrote the original software. If you use this software //% in a product, an acknowledgment in the product documentation would be //% appreciated but is not required. //% 2. Altered source versions must be plainly marked as such, and must not be //% misrepresented as being the original software. //% 3. This notice may not be removed or altered from any source distribution. //% Mark Adler madler@alumni.caltech.edu //% BEGIN CODE DERIVED FROM puff.{c,h} #define MAXBITS 15 #define MAXLCODES 286 #define MAXDCODES 30 #define MAXCODES (MAXLCODES + MAXDCODES) #define FIXLCODES 288 struct puff_state { unsigned char* out; unsigned long outlen; unsigned long outcnt; const unsigned char* in; unsigned long inlen; unsigned long incnt; int bitbuf; int bitcnt; jmp_buf env; }; static int puff_bits(struct puff_state* s, int need) { long val = s->bitbuf; while (s->bitcnt < need) { if (s->incnt == s->inlen) longjmp(s->env, 1); val |= (long)(s->in[s->incnt++]) << s->bitcnt; s->bitcnt += 8; } s->bitbuf = (int)(val >> need); s->bitcnt -= need; return (int)(val & ((1L << need) - 1)); } static int puff_stored(struct puff_state* s) { s->bitbuf = 0; s->bitcnt = 0; if (s->incnt + 4 > s->inlen) return 2; unsigned len = s->in[s->incnt++]; len |= s->in[s->incnt++] << 8; if (s->in[s->incnt++] != (~len & 0xff) || s->in[s->incnt++] != ((~len >> 8) & 0xff)) return -2; if (s->incnt + len > s->inlen) return 2; if (s->outcnt + len > s->outlen) return 1; for (; len--; s->outcnt++, s->incnt++) { if (s->in[s->incnt]) s->out[s->outcnt] = s->in[s->incnt]; } return 0; } struct puff_huffman { short* count; short* symbol; }; static int puff_decode(struct puff_state* s, const struct puff_huffman* h) { int first = 0; int index = 0; int bitbuf = s->bitbuf; int left = s->bitcnt; int code = first = index = 0; int len = 1; short* next = h->count + 1; while (1) { while (left--) { code |= bitbuf & 1; bitbuf >>= 1; int count = *next++; if (code - count < first) { s->bitbuf = bitbuf; s->bitcnt = (s->bitcnt - len) & 7; return h->symbol[index + (code - first)]; } index += count; first += count; first <<= 1; code <<= 1; len++; } left = (MAXBITS + 1) - len; if (left == 0) break; if (s->incnt == s->inlen) longjmp(s->env, 1); bitbuf = s->in[s->incnt++]; if (left > 8) left = 8; } return -10; } static int puff_construct(struct puff_huffman* h, const short* length, int n) { int len; for (len = 0; len <= MAXBITS; len++) h->count[len] = 0; int symbol; for (symbol = 0; symbol < n; symbol++) (h->count[length[symbol]])++; if (h->count[0] == n) return 0; int left = 1; for (len = 1; len <= MAXBITS; len++) { left <<= 1; left -= h->count[len]; if (left < 0) return left; } short offs[MAXBITS + 1]; offs[1] = 0; for (len = 1; len < MAXBITS; len++) offs[len + 1] = offs[len] + h->count[len]; for (symbol = 0; symbol < n; symbol++) if (length[symbol] != 0) h->symbol[offs[length[symbol]]++] = symbol; return left; } static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode, const struct puff_huffman* distcode) { static const short lens[29] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258}; static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; static const short dists[30] = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}; static const short dext[30] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; int symbol; do { symbol = puff_decode(s, lencode); if (symbol < 0) return symbol; if (symbol < 256) { if (s->outcnt == s->outlen) return 1; if (symbol) s->out[s->outcnt] = symbol; s->outcnt++; } else if (symbol > 256) { symbol -= 257; if (symbol >= 29) return -10; int len = lens[symbol] + puff_bits(s, lext[symbol]); symbol = puff_decode(s, distcode); if (symbol < 0) return symbol; unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]); if (dist > s->outcnt) return -11; if (s->outcnt + len > s->outlen) return 1; while (len--) { if (dist <= s->outcnt && s->out[s->outcnt - dist]) s->out[s->outcnt] = s->out[s->outcnt - dist]; s->outcnt++; } } } while (symbol != 256); return 0; } static int puff_fixed(struct puff_state* s) { static int virgin = 1; static short lencnt[MAXBITS + 1], lensym[FIXLCODES]; static short distcnt[MAXBITS + 1], distsym[MAXDCODES]; static struct puff_huffman lencode, distcode; if (virgin) { lencode.count = lencnt; lencode.symbol = lensym; distcode.count = distcnt; distcode.symbol = distsym; short lengths[FIXLCODES]; int symbol; for (symbol = 0; symbol < 144; symbol++) lengths[symbol] = 8; for (; symbol < 256; symbol++) lengths[symbol] = 9; for (; symbol < 280; symbol++) lengths[symbol] = 7; for (; symbol < FIXLCODES; symbol++) lengths[symbol] = 8; puff_construct(&lencode, lengths, FIXLCODES); for (symbol = 0; symbol < MAXDCODES; symbol++) lengths[symbol] = 5; puff_construct(&distcode, lengths, MAXDCODES); virgin = 0; } return puff_codes(s, &lencode, &distcode); } static int puff_dynamic(struct puff_state* s) { static const short order[19] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; int nlen = puff_bits(s, 5) + 257; int ndist = puff_bits(s, 5) + 1; int ncode = puff_bits(s, 4) + 4; if (nlen > MAXLCODES || ndist > MAXDCODES) return -3; short lengths[MAXCODES]; int index; for (index = 0; index < ncode; index++) lengths[order[index]] = puff_bits(s, 3); for (; index < 19; index++) lengths[order[index]] = 0; short lencnt[MAXBITS + 1], lensym[MAXLCODES]; struct puff_huffman lencode = {lencnt, lensym}; int err = puff_construct(&lencode, lengths, 19); if (err != 0) return -4; index = 0; while (index < nlen + ndist) { int symbol; int len; symbol = puff_decode(s, &lencode); if (symbol < 0) return symbol; if (symbol < 16) lengths[index++] = symbol; else { len = 0; if (symbol == 16) { if (index == 0) return -5; len = lengths[index - 1]; symbol = 3 + puff_bits(s, 2); } else if (symbol == 17) symbol = 3 + puff_bits(s, 3); else symbol = 11 + puff_bits(s, 7); if (index + symbol > nlen + ndist) return -6; while (symbol--) lengths[index++] = len; } } if (lengths[256] == 0) return -9; err = puff_construct(&lencode, lengths, nlen); if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1])) return -7; short distcnt[MAXBITS + 1], distsym[MAXDCODES]; struct puff_huffman distcode = {distcnt, distsym}; err = puff_construct(&distcode, lengths + nlen, ndist); if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1])) return -8; return puff_codes(s, &lencode, &distcode); } static int puff(unsigned char* dest, unsigned long* destlen, const unsigned char* source, unsigned long sourcelen) { struct puff_state s = { .out = dest, .outlen = *destlen, .outcnt = 0, .in = source, .inlen = sourcelen, .incnt = 0, .bitbuf = 0, .bitcnt = 0, }; int err; if (setjmp(s.env) != 0) err = 2; else { int last; do { last = puff_bits(&s, 1); int type = puff_bits(&s, 2); err = type == 0 ? puff_stored(&s) : (type == 1 ? puff_fixed(&s) : (type == 2 ? puff_dynamic(&s) : -1)); if (err != 0) break; } while (!last); } *destlen = s.outcnt; return err; } //% END CODE DERIVED FROM puff.{c,h} #define ZLIB_HEADER_WIDTH 2 static int puff_zlib_to_file(const unsigned char* source, unsigned long sourcelen, int dest_fd) { if (sourcelen < ZLIB_HEADER_WIDTH) return 0; source += ZLIB_HEADER_WIDTH; sourcelen -= ZLIB_HEADER_WIDTH; const unsigned long max_destlen = 132 << 20; void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0); if (ret == MAP_FAILED) return -1; unsigned char* dest = (unsigned char*)ret; unsigned long destlen = max_destlen; int err = puff(dest, &destlen, source, sourcelen); if (err) { munmap(dest, max_destlen); errno = -err; return -1; } if (write(dest_fd, dest, destlen) != (ssize_t)destlen) { munmap(dest, max_destlen); return -1; } return munmap(dest, max_destlen); } static int setup_loop_device(unsigned char* data, unsigned long size, const char* loopname, int* loopfd_p) { int err = 0, loopfd = -1; int memfd = syscall(__NR_memfd_create, "syzkaller", 0); if (memfd == -1) { err = errno; goto error; } if (puff_zlib_to_file(data, size, memfd)) { err = errno; goto error_close_memfd; } loopfd = open(loopname, O_RDWR); if (loopfd == -1) { err = errno; goto error_close_memfd; } if (ioctl(loopfd, LOOP_SET_FD, memfd)) { if (errno != EBUSY) { err = errno; goto error_close_loop; } ioctl(loopfd, LOOP_CLR_FD, 0); usleep(1000); if (ioctl(loopfd, LOOP_SET_FD, memfd)) { err = errno; goto error_close_loop; } } close(memfd); *loopfd_p = loopfd; return 0; error_close_loop: close(loopfd); error_close_memfd: close(memfd); error: errno = err; return -1; } static void reset_loop_device(const char* loopname) { int loopfd = open(loopname, O_RDWR); if (loopfd == -1) { return; } if (ioctl(loopfd, LOOP_CLR_FD, 0)) { } close(loopfd); } static long syz_mount_image(volatile long fsarg, volatile long dir, volatile long flags, volatile long optsarg, volatile long change_dir, volatile unsigned long size, volatile long image) { unsigned char* data = (unsigned char*)image; int res = -1, err = 0, need_loop_device = !!size; char* mount_opts = (char*)optsarg; char* target = (char*)dir; char* fs = (char*)fsarg; char* source = NULL; char loopname[64]; if (need_loop_device) { int loopfd; memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; close(loopfd); source = loopname; } mkdir(target, 0777); char opts[256]; memset(opts, 0, sizeof(opts)); if (strlen(mount_opts) > (sizeof(opts) - 32)) { } strncpy(opts, mount_opts, sizeof(opts) - 32); if (strcmp(fs, "iso9660") == 0) { flags |= MS_RDONLY; } else if (strncmp(fs, "ext", 3) == 0) { bool has_remount_ro = false; char* remount_ro_start = strstr(opts, "errors=remount-ro"); if (remount_ro_start != NULL) { char after = *(remount_ro_start + strlen("errors=remount-ro")); char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1); has_remount_ro = ((before == '\0' || before == ',') && (after == '\0' || after == ',')); } if (strstr(opts, "errors=panic") || !has_remount_ro) strcat(opts, ",errors=continue"); } else if (strcmp(fs, "xfs") == 0) { strcat(opts, ",nouuid"); } res = mount(source, target, fs, flags, opts); if (res == -1) { err = errno; goto error_clear_loop; } res = open(target, O_RDONLY | O_DIRECTORY); if (res == -1) { err = errno; goto error_clear_loop; } if (change_dir) { res = chdir(target); if (res == -1) { err = errno; } } error_clear_loop: if (need_loop_device) reset_loop_device(loopname); errno = err; return res; } #define FS_IOC_SETFLAGS _IOW('f', 2, long) static void remove_dir(const char* dir) { int iter = 0; DIR* dp = 0; const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; retry: while (umount2(dir, umount_flags) == 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, umount_flags) == 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, umount_flags)) 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, umount_flags)) 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 reset_loop() { char buf[64]; snprintf(buf, sizeof(buf), "/dev/loop%llu", procid); int loopfd = open(buf, O_RDWR); if (loopfd != -1) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } } 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() { int cad_pid = fork(); if (cad_pid < 0) exit(1); if (cad_pid == 0) { for (;;) sleep(100); } char tmppid[32]; snprintf(tmppid, sizeof(tmppid), "%d", cad_pid); 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/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", tmppid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) { } } kill(cad_pid, SIGKILL); while (waitpid(cad_pid, NULL, 0) != cad_pid) ; } #define NL802154_CMD_SET_SHORT_ADDR 11 #define NL802154_ATTR_IFINDEX 3 #define NL802154_ATTR_SHORT_ADDR 10 static const char* setup_802154() { const char* error = NULL; int sock_generic = -1; int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (sock_route == -1) { error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) failed"; goto fail; } sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC); if (sock_generic == -1) { error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) failed"; goto fail; } { int nl802154_family_id = netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true); if (nl802154_family_id < 0) { error = "netlink_query_family_id failed"; goto fail; } 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)); if (netlink_send(&nlmsg, sock_generic) < 0) { error = "NL802154_CMD_SET_SHORT_ADDR failed"; goto fail; } netlink_device_change(&nlmsg, sock_route, devname, true, 0, &hwaddr, sizeof(hwaddr), 0); if (i == 0) { netlink_add_device_impl(&nlmsg, "lowpan", "lowpan0", false); netlink_done(&nlmsg); netlink_attr(&nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex)); if (netlink_send(&nlmsg, sock_route) < 0) { error = "netlink: adding device lowpan0 type lowpan link wpan0"; goto fail; } } } } fail: close(sock_route); close(sock_generic); return error; } 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); 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 (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x20000140, "hfsplus\000", 8); memcpy((void*)0x20000040, "./file2\000", 8); memcpy((void*)0x20000080, "decompose", 9); *(uint8_t*)0x20000089 = 0x2c; memcpy((void*)0x2000008a, "umask", 5); *(uint8_t*)0x2000008f = 0x3d; sprintf((char*)0x20000090, "%023llo", (long long)0x20); *(uint8_t*)0x200000a7 = 0x2c; memcpy((void*)0x200000a8, "type", 4); *(uint8_t*)0x200000ac = 0x3d; memcpy((void*)0x200000ad, "\xa7\x86\x88\x28", 4); *(uint8_t*)0x200000b1 = 0x2c; memcpy((void*)0x200000b2, "umask", 5); *(uint8_t*)0x200000b7 = 0x3d; sprintf((char*)0x200000b8, "%023llo", (long long)0x8001); *(uint8_t*)0x200000cf = 0x2c; memcpy((void*)0x200000d0, "nls", 3); *(uint8_t*)0x200000d3 = 0x3d; memcpy((void*)0x200000d4, "cp866", 5); *(uint8_t*)0x200000d9 = 0x2c; memcpy((void*)0x200000da, "umask", 5); *(uint8_t*)0x200000df = 0x3d; sprintf((char*)0x200000e0, "%023llo", (long long)9); *(uint8_t*)0x200000f7 = 0x2c; memcpy((void*)0x200000f8, "barrier", 7); *(uint8_t*)0x200000ff = 0x2c; memcpy((void*)0x20000100, "creator", 7); *(uint8_t*)0x20000107 = 0x3d; memcpy((void*)0x20000108, "\x8e\x4d\x91\x37", 4); *(uint8_t*)0x2000010c = 0x2c; memcpy((void*)0x2000010d, "nobarrier", 9); *(uint8_t*)0x20000116 = 0x2c; *(uint8_t*)0x20000117 = 0; memcpy( (void*)0x20000380, "\x78\x9c\xec\xdd\xcd\x6f\x1c\x67\x1d\x07\xf0\xef\xac\xd7\x6f\x41\x6a\x9d" "\x36\x69\x0b\xaa\x44\x68\xa4\x82\x88\x48\xfc\xa2\x14\xc2\x25\x01\x21\xe4" "\x43\x85\x2a\x38\x70\xb6\x12\xa7\xb1\xb2\x49\x2b\xdb\x05\xb7\x42\x34\xbc" "\x5f\x7b\xe8\x1f\x50\x0e\xb9\x71\x42\xe2\x1e\x54\xce\x70\x83\xa3\xc5\xa9" "\x12\xa2\x17\x4e\xb9\x2d\x9a\x97\xb5\x37\x59\xaf\xb3\x1b\x27\xb1\xad\x7e" "\x3e\xd1\xec\xf3\xcc\x3c\xf3\xbc\xfd\x76\x66\x76\x67\xad\x68\x02\x7c\x61" "\x2d\x9f\x4b\xfb\x5e\x8a\x2c\x9f\x7b\x73\xab\x5c\xdf\xbe\xbb\xd4\xd9\xbe" "\xbb\x34\xdd\x14\x77\x92\x94\xf9\x56\xd2\xae\x93\x14\xb7\x93\xe2\xd3\xe4" "\x4a\xea\x25\x5f\x2e\x37\x36\xfb\x17\xc3\xfa\xf9\x78\xed\xd2\x8f\xff\xf9" "\xbf\xed\xcf\xea\xb5\x76\xb3\x54\xfb\xb7\x06\xeb\x7d\xd8\x1d\x6f\x16\x77" "\x9a\x25\x67\x92\x4c\x34\xe9\xa0\xc9\xc1\x4d\x33\x8f\x6e\xef\xea\xd0\xf6" "\x6a\xd3\x7d\xf9\xbd\xe7\x5f\xec\x94\x94\x01\x3b\xdb\x0b\x1c\x1c\xb6\xee" "\x80\x3b\xe3\x54\x1f\x7a\xbe\x03\xc7\x47\x51\x7f\x6e\x0e\x98\x4b\x4e\x34" "\x1f\x93\xd5\xe7\x5c\x73\x75\x68\x3d\xdb\xd1\x3d\x79\x63\x5d\xe5\x00\x00" "\x00\xe0\x90\x2d\xff\xf7\xf4\xe2\x38\xfb\xcf\x36\xe9\xf3\xf7\x73\x3f\x5b" "\xc7\xfe\x36\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9e\xa9\xe6\xf9\xff" "\x45\xb3\xb4\x7a\xf9\x33\x29\x7a\xcf\xff\x9f\x6a\xb6\xa5\xc9\x1f\x6b\xf7" "\x0e\x7b\x00\x00\x00\x00\x00\x00\x00\x00\x30\x82\xe9\x5e\xe6\xf2\xde\xe5" "\x5f\xbd\x9f\xfb\xd9\xca\x73\xbd\xf5\x6e\x51\xfd\xcd\xff\xb5\x6a\xe5\x54" "\xf5\xfa\xa5\xbc\x97\x8d\xac\x66\x3d\xe7\xb3\x95\x95\x6c\x66\x33\xeb\x59" "\x48\x32\xd7\xd7\xd0\xd4\xd6\xca\xe6\xe6\xfa\xc2\x08\x35\x17\xf7\xac\xb9" "\xf8\x64\xe7\x0d\x00\x00\x00\x00\x00\x00\x00\x5f\x30\xbf\xce\xf2\xee\xdf" "\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x28\x28\x92\x89\x3a" "\xa9\x96\x53\xbd\xfc\x5c\x5a\xed\x24\x33\x49\xa6\xca\xfd\xee\x24\xff\xe8" "\xe5\x8f\x89\x62\xaf\x8d\xf7\x9e\xfd\x38\x00\x00\x00\xe0\x40\x66\x1e\xa3" "\xce\x54\x72\x3f\x5b\x79\xae\xb7\xde\x2d\xaa\x7b\xfe\x97\xaa\xfb\xe5\x99" "\xbc\x97\xdb\xd9\xcc\x5a\x36\xd3\xc9\x6a\xae\x35\xf7\xd0\xe5\x5d\x7f\x6b" "\xfb\xee\x52\x67\xfb\xee\xd2\xad\x72\x39\xf0\xd0\xab\x16\x53\xff\xf6\xb0" "\x77\xcf\xaf\x54\x7b\xcc\xe6\x7a\xd6\xaa\x2d\xe7\x73\xb5\x1a\xcc\xb5\xb4" "\xaa\x9a\xa5\x7f\x27\xb9\xd5\x1b\xd3\xe0\xb8\x7e\xf5\x79\xd9\xf6\xe5\xda" "\xcf\x47\x1c\xd9\xb5\x26\x2d\x3b\xfb\xa8\xf7\x2b\xc2\xf4\x81\x27\xfc\x04" "\xcc\x25\xed\x56\x26\x77\x22\x32\x5f\x8d\xad\x3e\x08\x4e\xf6\x47\x61\x30" "\x12\xdf\xfb\x7c\x58\xa3\x57\xea\xa4\xfd\x70\x4f\xe9\xef\x69\x21\xad\x9d" "\x5f\x7e\x4e\xd5\x3d\x94\xd9\x47\xc6\xfc\xf2\x88\x33\x3b\xd1\xa4\xe5\x7c" "\x7e\x3f\xec\x97\x9b\x27\x6d\x66\xb7\xd3\x3b\x43\x77\xda\x89\x44\x2b\x55" "\x24\x16\xfb\x8e\xbe\x97\xf6\x8f\x79\xf2\xf5\xbf\xfc\xe9\xa3\x1b\x9d\xdb" "\x37\x6f\x5c\xdf\x38\xf7\x4c\xa6\xf4\x34\x3d\x7c\x4c\x2c\xf5\x45\xe2\xe5" "\x11\x22\xf1\xd3\x23\x1b\x89\xf6\x98\xfb\xcf\x57\x91\x38\xbd\xb3\xbe\x9c" "\x1f\xe6\x27\x39\x97\x33\x79\x2b\xeb\x59\xcb\xcf\xb2\x92\xcd\xac\xa6\x68" "\x66\xba\xd2\x1c\xcf\xe5\xeb\xdc\xfe\x91\xba\xf2\xc0\xda\x5b\x8f\x1a\xc9" "\x54\xf3\xbe\xd4\x57\xd1\x51\xc6\x74\x26\x3f\xa8\x72\x2b\x79\xad\xaa\xfb" "\x5c\xd6\x52\xe4\x9d\x5c\xcb\x6a\xde\xa8\xfe\x2d\x66\x21\xdf\xce\xc5\x5c" "\xcc\xa5\xbe\x77\xf8\xf4\xd0\x71\x57\x73\xab\xce\xfa\xd6\x78\x67\xfd\xd9" "\x6f\x34\x99\xd9\x24\x7f\x68\xd2\xc3\x56\x5f\x14\xca\xb8\x9e\xec\x8b\x6b" "\xff\x35\x77\xae\x2a\xeb\xdf\xb2\x1b\xa5\x17\xf6\x7f\x77\x07\xaf\x8d\x8f" "\x9e\x72\xfb\x2b\x4d\xa6\xec\xe3\x37\x4d\x7a\x34\x3c\x1c\x89\x85\xbe\x48" "\xbc\xb8\x7f\x24\xfe\xd8\x2d\x5f\x37\x3a\xb7\x6f\xae\xdf\x58\x79\x77\xcf" "\x4f\xd7\xc9\x26\xed\x76\xbb\xdd\x3a\xf7\x7a\xb3\xa5\x3c\xe2\x7e\xf7\xe8" "\xaf\x3f\x7f\x3d\xc8\xdc\x46\xd0\x77\x1d\x2b\x8f\x97\x17\x32\xd3\x5c\x49" "\x4e\x66\xb2\x1e\xda\x44\xaf\xec\xc5\x9d\xab\xcc\x83\xf1\x9a\x6a\xfe\xe2" "\x52\x97\xb5\x06\xca\x4e\xd7\x6f\x77\xd1\x3b\x53\x7f\x34\xf4\x4c\x9d\x6a" "\xbe\xc3\x0d\xb6\xb4\x58\x95\xbd\xbc\x67\xd9\x52\x55\xf6\x4a\x5f\x59\xff" "\xf7\xad\xe4\x9d\x74\x76\xbe\x0f\x01\x70\x84\x9d\xf8\xe6\x89\xa9\xd9\xff" "\xcc\xfe\x7d\xf6\x93\xd9\xdf\xce\xde\x98\x7d\x73\xe6\xfb\xd3\xdf\x99\x7e" "\x75\x2a\x93\x7f\x9b\xfc\x6e\x7b\x7e\xe2\xf5\xd6\xab\xc5\x9f\xf3\x49\x7e" "\xb9\x7b\xff\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3c\xbe\x8d\xf7\x3f\xb8\xb9\xd2\xe9" "\xac\xae\xef\x9d\x69\x0d\x2f\xda\x2f\xd3\x7b\x92\xcf\xe8\xb5\x8a\xe6\x49" "\x3a\xe3\xf7\x75\x58\x99\xee\x87\xc9\x11\x18\xc6\xfa\xc6\xd7\x92\x3c\x85" "\x96\x8b\xa7\x38\xe6\xde\x43\x04\xc7\xab\x35\x3f\x78\x44\x5d\x39\xcc\xc8" "\xff\x6b\xdc\x5a\x99\x19\x6b\xca\xdd\xe7\xeb\x28\x8d\xd5\xc5\x5c\x5d\x67" "\x84\x9d\xa7\xeb\x60\x4e\x0c\x39\x4f\x9b\xb7\xe8\x71\x1e\x2e\x0a\x1c\x0b" "\x17\x36\x6f\xbd\x7b\x61\xe3\xfd\x0f\xbe\xb5\x76\x6b\xe5\xed\xd5\xb7\x57" "\x6f\x4f\x5e\xbc\x78\x69\xfe\xd2\xc5\x37\x96\x2e\x5c\x5f\xeb\xac\xce\xd7" "\xaf\x87\x3d\x4a\xe0\x69\xd8\xfd\xd0\x3f\xec\x91\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\xa3\x7a\x16\xff\x5f\xe2\xb0\xe7\x08\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1c\x6f" "\xcb\xe7\xd2\xbe\x97\x22\x0b\xf3\xe7\xe7\xcb\xf5\xed\xbb\x4b\x9d\x72\xe9" "\xe5\x77\xf7\x6c\x27\x69\xb5\x92\xe2\x17\x49\xf1\x69\x72\x25\xf5\x92\xb9" "\xbe\xe6\x8a\x61\xfd\x7c\xbc\x76\x69\x22\xc9\x67\xbb\x6d\xb5\x7b\xfb\xb7" "\xf6\xa9\xd7\x9d\x1e\x69\x16\x77\x9a\x25\x67\x92\x4c\x34\xe9\x01\x3c\xd0" "\xde\xd5\x03\xb7\x57\xec\xcc\xb0\x0c\xd8\xd9\x5e\xe0\xe0\xb0\xfd\x3f\x00" "\x00\xff\xff\xba\xd2\xf2\x41", 1699); syz_mount_image(/*fs=*/0x20000140, /*dir=*/0x20000040, /*flags=MS_POSIXACL|MS_REC|MS_SYNCHRONOUS|MS_NOEXEC*/ 0x14018, /*opts=*/0x20000080, /*chdir=*/1, /*size=*/0x6a3, /*img=*/0x20000380); memcpy((void*)0x20000280, "/dev/loop#\000", 11); res = -1; res = syz_open_dev(/*dev=*/0x20000280, /*id=*/0, /*flags=*/0); if (res != -1) r[0] = res; memcpy((void*)0x20000080, "cgroup.stat\000", 12); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000080ul, /*flags=*/0x275a, /*mode=*/0); if (res != -1) r[1] = res; *(uint32_t*)0x200002c0 = r[1]; *(uint32_t*)0x200002c4 = 0; *(uint64_t*)0x200002c8 = 0x2a00; *(uint64_t*)0x200002d0 = 0x80010000; *(uint64_t*)0x200002d8 = 0; *(uint64_t*)0x200002e0 = 0; *(uint64_t*)0x200002e8 = 0; *(uint32_t*)0x200002f0 = 0; *(uint32_t*)0x200002f4 = 0; *(uint32_t*)0x200002f8 = 8; *(uint32_t*)0x200002fc = 0x1c; memcpy((void*)0x20000300, "\xfe\xe8\xa2\xab\x78\xfc\x17\x9f\xd1\xf8\xa0\xe9\x1d\xda\xac\xa7\xbd" "\x64\xc6\xa4\xb4\xe0\x0d\x96\x83\xdd\xa1\xaf\x1e\xa8\x9d\xe2\xb7\xfb" "\x0a\x01\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 64); memcpy((void*)0x20000340, "\x28\x09\xe8\xdb\xe1\x08\x59\x89\x48\x22\x4a\xd5\x4a\xfa\xc1\x1d\x87" "\x53\x97\xbd\xb2\x2d\x00\x00\xb4\x20\xa1\xa9\x3c\x52\x40\xf4\x5f\x81" "\x9e\x01\x17\x7d\x3d\x45\x8d\xd4\x99\x28\x61\xac\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 64); memcpy((void*)0x20000380, "\x90\xbe\x8b\x1c\x55\x12\x65\x40\x6c\x7f\x30\x60\x03\xd8\xa0\xf4\xbd" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 32); *(uint64_t*)0x200003a0 = 0; *(uint64_t*)0x200003a8 = 0; memset((void*)0x200003b0, 0, 64); syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4c0a, /*arg=*/0x200002c0ul); *(uint64_t*)0x20001300 = 0; *(uint64_t*)0x20001308 = 0; *(uint64_t*)0x20001310 = 0; *(uint64_t*)0x20001318 = 5; *(uint64_t*)0x20001320 = 0x7ff; *(uint32_t*)0x20001328 = 0; *(uint32_t*)0x2000132c = 0; *(uint32_t*)0x20001330 = 0; *(uint32_t*)0x20001334 = 0x1a; memcpy((void*)0x20001338, "\xeb\xbf\x52\x74\x8b\x0b\x2a\xff\x33\x0c\x21\x36\x7b\x06\x62\x4f\xde" "\x30\x88\x7f\xda\x17\x2e\xe2\x51\xca\x9d\xea\x03\xca\x09\x48\x80\x22" "\x55\x71\x64\x5c\xc0\x27\xcd\x4c\x7a\x81\x38\x8e\x08\xc0\xa4\xa8\x77" "\x31\x91\x41\x08\x48\xa8\x94\x10\xf3\x19\xbd\xe2\xed", 64); memcpy((void*)0x20001378, "\xc1\x10\x30\xf6\x99\x1c\x26\xeb\x66\x7e\x4d\x7f\xba\xeb\x5b\xe6\xd9" "\x58\xdf\x81\x11\x7f\x6c\xfe\x5e\x5b\xf3\xdc\x30\xbb\xfb\x71\x6d\x91" "\xad\x12\xa0\xc2\xb9\xcf\x2e\x15\xd1\x61\xe0\x1f\x42\x52\x60\xd3\x1c" "\x04\x07\x8e\x90\x7e\x24\x74\xfe\x96\x72\x9f\xd2\xa6", 64); memcpy((void*)0x200013b8, "\x0a\x8c\x8c\x37\xab\x0b\xce\xea\xe8\x3d\x73\xe2\x57\x04\x18\x4a\x6e" "\x89\x56\x2a\x71\x7a\x4a\xf0\x45\x7d\x7c\x04\x96\x06\x9c\x89", 32); *(uint64_t*)0x200013d8 = 0; *(uint64_t*)0x200013e0 = 0; syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4c04, /*arg=*/0x20001300ul); } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); setup_sysctl(); const char* reason; (void)reason; if ((reason = setup_802154())) printf("the reproducer may not work as expected: 802154 injection setup " "failed: %s\n", reason); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }