// https://syzkaller.appspot.com/bug?id=ab54b1a5e40a1d0d75d313c3a531737792043607 // 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 #ifndef __NR_memfd_create #define __NR_memfd_create 279 #endif #ifndef __NR_mknodat #define __NR_mknodat 33 #endif #ifndef __NR_mmap #define __NR_mmap 222 #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 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 = 0; for (; 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_ACQUIRE)) 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; } //% 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, 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 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, loopfd = -1, 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) { memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; 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) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } 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; 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 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")) { } } 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 < 3; 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); if (call == 1) break; event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0) + (call == 2 ? 4000 : 0)); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } 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 (;;) { 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[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "hfsplus\000", 8); memcpy((void*)0x20001540, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 251); memcpy( (void*)0x20000700, "\x78\x9c\xec\xdd\xcd\x6b\x1c\xe7\x1d\x07\xf0\xef\xac\x57\xb2\xe5\x82" "\xa3\x24\x76\x63\x4a\xa0\x22\x86\xb4\x54\xd4\xd6\x0b\x4a\xab\x5e\xea" "\x96\x52\x74\x08\x25\xa4\x87\x9e\x85\xbd\x8e\x17\xaf\x95\x20\x6d\x8a" "\x1c\x4a\x51\xdf\xaf\x3d\xe4\x0f\x48\x0f\xba\xf5\x54\xe8\xdd\x90\x9e" "\x9b\x5b\xae\x3a\x06\x0a\xbd\xe4\xa4\x9e\x54\x66\x76\x56\x5a\x59\x2f" "\x91\xdf\xb4\xab\xf8\xf3\x31\xcf\x3e\xcf\xb3\xcf\xcc\x33\xbf\xf9\xed" "\xcc\xec\xce\x0a\xb3\x01\x5e\x58\x4b\xd3\x69\x3e\x4c\x91\xa5\xe9\xb7" "\xd7\xcb\xfe\xd6\xe6\x7c\x67\x6b\x73\xfe\x7c\x3d\xdc\x49\x52\xb6\x1b" "\x49\xb3\x57\xa5\x58\x49\x8a\x4f\x93\x9b\xe9\x95\x8c\x0d\x4c\x57\x1c" "\xb5\x9d\x8f\xdb\x8b\xef\x7e\xfe\xe5\xd6\x17\xbd\x5e\xb3\x2e\xd5\xf2" "\x8d\xfd\x53\x3c\x89\x8d\xba\x64\x2a\xc9\xb9\xba\x3e\xe8\xc4\x9b\xd9" "\x37\xdf\xad\x23\xe7\x3b\xa9\x62\x37\x33\x65\xc2\xae\x95\xf5\xc6\x53" "\x4d\x08\xcf\xc6\xce\x01\x8f\x75\x64\x1e\x79\xbe\x03\x67\x47\xd1\x7b" "\xdf\x3c\x60\x32\xb9\x98\xe4\x42\xfd\x39\x20\xf5\xd5\xa1\x71\xba\xd1" "\x3d\x7b\xde\x7f\x01\x00\x00\x78\x11\xbc\xb4\x9d\xed\xac\xe7\xd2\xb0" "\xe3\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\xb3\xa4\xfe\xfd\xff" "\xa2\x2e\x8d\x7e\x7b\x2a\x45\xff\xf7\xff\xc7\xeb\xe7\x52\xb7\xcf\xb4" "\x87\xc3\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x9e\x81\x6f\x6f\x67\x3b" "\xeb\xb9\xd4\xef\xef\x14\xd5\xdf\xfc\xdf\xa8\x3a\x97\xab\xc7\x6f\xe4" "\xc3\xac\xa5\x95\xd5\x5c\xcf\x7a\x96\xd3\x4d\x37\xab\x99\x4d\x32\x39" "\x30\xd1\xf8\xfa\x72\xb7\xbb\x3a\x7b\x82\x35\xe7\x0e\x5d\x73\xee\x74" "\xf6\x17\x00\x00\x00\x00\x00\x00\x00\xbe\xa6\x7e\x9f\xa5\xbd\xbf\xff" "\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\x28\x28\x92" "\x73\xbd\xaa\x2a\x97\xfb\xed\xc9\x34\x9a\x49\x2e\x24\x19\x2f\x97\xdb" "\x48\x3e\xeb\xb7\xcf\xb2\x87\xc3\x0e\x00\x00\x00\x00\x4e\xc1\x4b\xdb" "\xd9\xce\x7a\x2e\xf5\xfb\x3b\x45\x75\xcf\xff\xcd\xea\xbe\xff\x42\x3e" "\xcc\x4a\xba\x69\xa7\x9b\x4e\x5a\xb9\x5d\x7d\x17\xd0\xbb\xeb\x6f\x6c" "\x6d\xce\x77\xb6\x36\xe7\xef\x97\xe5\xe0\xbc\x3f\xf9\xef\x63\x85\x51" "\xcd\x98\xde\x77\x0f\x87\x6f\xf9\x6a\xb5\xc4\x44\xee\xa4\x5d\x3d\x73" "\x3d\xb7\xf2\x7e\x3a\xb9\x9d\x46\xb5\x66\xe9\x6a\x3f\x9e\xc3\xe3\xfa" "\x5d\x19\x53\xf1\xe3\xda\x09\x23\xbb\x5d\xd7\xe5\x9e\xff\xb5\xae\x47" "\xc3\x64\x95\x91\xb1\xdd\x8c\xcc\xd4\xb1\x95\xd9\x78\xf9\xf8\x4c\x3c" "\xe6\xab\xf3\xe8\x96\x66\xd3\xd8\xfd\xe6\xe7\xf2\x73\xc8\xf9\xc5\xba" "\x2e\xf7\xe7\xcf\x23\x9d\xf3\xb9\xfa\xe8\xfb\xac\x3c\x67\x8e\xcf\x44" "\xf2\x9d\x7f\xfe\xfd\x57\x77\x3b\x2b\xf7\xee\xde\x59\x9b\x1e\x9d\x5d" "\x7a\x42\x8f\x66\x62\x7e\xe0\x3c\x7c\xed\x85\xca\xc4\x4c\x95\x89\x2b" "\xbb\xfd\xa5\xfc\x3c\xbf\xcc\x74\xa6\xf2\x4e\xfe\xb7\xd3\xd3\x4d\x2b" "\x53\xf9\x59\x96\xd3\xcd\x72\x7d\x3c\x97\x8f\x93\xc7\x67\xea\xe6\xbe" "\xde\x3b\x5f\x15\xc9\x78\xfd\xba\xf4\xae\xa2\x47\xc5\xb4\x9a\x76\x7e" "\x5d\x45\x32\x18\xd3\x1b\xd5\xba\x97\xd2\xce\x2f\xf2\x7e\x6e\xa7\x95" "\xb7\xaa\x7f\x73\x99\xcd\x0f\xb2\x90\x85\x2c\x0e\xbc\xc2\x57\x4e\x70" "\xd6\x37\x1e\xef\xac\xbf\xf6\xdd\xba\x31\x91\xe4\x2f\x75\x3d\x1a\xca" "\xbc\xbe\x3c\x90\xd7\xc1\x6b\xee\x64\x35\x36\xf8\xcc\x5e\x96\x5e\x39" "\x3a\x4b\xc5\x13\x5e\x1b\x9b\xdf\xaa\x1b\xe5\x36\xfe\x50\xd7\xa3\xe1" "\xd1\x4c\xcc\x0e\x64\xe2\xd5\xe3\x8f\x97\xbf\xed\x94\x8f\x6b\x9d\x95" "\x7b\xab\x77\x97\x3f\x38\xe1\xf6\xde\xac\xeb\x32\x95\x7f\x1a\xa9\x77" "\x89\xf2\x78\x79\xa5\x7c\xb1\xaa\xde\xfe\xa3\xa3\x1c\x7b\xf5\xd0\xb1" "\xd9\x6a\xec\xf2\xee\x58\xe3\xc0\xd8\x95\xdd\xb1\xaf\x3a\x53\xc7\xeb" "\xcf\x70\x07\x67\x9a\xab\xc6\x5e\x3b\x74\x6c\xbe\x1a\xbb\x3a\x30\x76" "\xd8\xe7\x2d\x00\x46\xde\xc5\xef\x5d\x1c\x9f\xf8\xcf\xc4\xbf\x27\x3e" "\x99\xf8\xe3\xc4\xdd\x89\xb7\x2f\xfc\xf4\xfc\x0f\xcf\xbf\x3e\x9e\xb1" "\x7f\x8d\xfd\xa8\x39\x73\xee\xcd\xc6\xeb\xc5\x3f\xf2\x49\x7e\xbb\x77" "\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\xb9\xb5\x07\x3b\xf7\x96\x3b\x9d" "\xd6\xea\xda\x83\x8f\x86\xd9\x28\xea\x1f\xf2\x19\x6a\x18\xcd\x21\x27" "\x61\xa4\x1a\xf5\x01\xb2\x31\x2a\xf1\x68\x9c\x6e\x63\xc8\x17\x26\xe0" "\xb9\xbb\xd1\xbd\xff\xc1\x8d\xb5\x07\x1f\x7d\xbf\x7d\x7f\xf9\xbd\xd6" "\x7b\xad\x95\xb1\x85\x85\xc5\x99\xc5\x85\xb7\xe6\x6f\xdc\x69\x77\x5a" "\x33\xbd\xc7\x61\x47\x09\x3c\x0f\x7b\x6f\xfa\xc3\x8e\x04\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x38\xa9\xd3\xf8\xef\x04\xc3\xde\x47\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x6c\x5b\x9a\x4e\xf3\x61\x8a\xcc\xce\x5c\x9f\x29" "\xfb\x5b\x9b\xf3\x9d\xb2\xf4\xdb\x7b\x4b\x36\x93\x34\x92\x14\xbf\x49" "\x8a\x4f\x93\x9b\xe9\x95\x4c\x0e\x4c\x57\x1c\xb5\x9d\x8f\xdb\x8b\xef" "\x7e\xfe\xe5\xd6\x17\x7b\x73\x35\xfb\xcb\x37\x8e\x5b\xef\x50\x63\x8f" "\x3e\xb1\x51\x97\x4c\x25\x39\x57\xd7\x4f\x61\xdf\x7c\xb7\x9e\x7a\xbe" "\x62\x77\x0f\xcb\x84\x5d\xeb\x27\x0e\x86\xed\xff\x01\x00\x00\xff\xff" "\x16\x46\x0e\x9a", 1534); res = -1; res = syz_mount_image(/*fs=*/0x20000000, /*dir=*/0x20001540, /*flags=*/0, /*opts=*/0x20000040, /*chdir=*/1, /*size=*/0x5fe, /*img=*/0x20000700); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000080, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 251); syscall(__NR_mknodat, /*dirfd=*/0xffffff9c, /*file=*/0x20000080ul, /*mode=*/0ul, /*dev=*/0x103); break; case 2: memcpy((void*)0x20000180, "msdos\000", 6); memcpy((void*)0x200006c0, ".\000", 2); *(uint32_t*)0x200001c0 = -1; *(uint32_t*)0x200001c4 = -1; sprintf((char*)0x200001c8, "%020llu", (long long)-1); *(uint64_t*)0x200001dc = -1; *(uint8_t*)0x200001e4 = r[0]; sprintf((char*)0x200001e5, "%023llo", (long long)r[0]); memcpy( (void*)0x200001fc, "\x6c\x62\x5a\xe8\x09\x00\x00\x00\x00\x00\x00\x00\xd7\x88\xaf\xc4\xb6" "\xb6\x90\x9e\xf3\xcb\x48\x7e\x1f\xd7\x90\x61\x1d\x1b\x8a\xff\x2a\xa4" "\x4f\xe4\xbd\xd1\x93\x3c\x0b\x35\x5e\xbb\x53\xe2\x75\xcc\xcb\xfc\x1e" "\x73\x1e\x25\x25\xb4\x0a\x8e\x2f\xc4\x96\x45\x61\x6f\x66\xaf\x80\xdf" "\x6d\xc5\xdf\x9a\xee\x17\xd0\x2b\x7e\x61\x21\x5b\x88\xb7\x17\x0a\xc5" "\x74\x35\xb7\x42\x91\x74\xb1\x98\xd2\xae\xe6\x92\xc0\x7e\x98\x92\xb5" "\xe2\x1d\xa6\xd0\xb3\x23\xef\xd0\x61\xb7\x0b\x43\xaa\x92\xfc\xcf\x24" "\xbf\x92\x6e\x9c\x2d\xb4\xdb\x9d\xa8\x57\x06\x3f\x95\xe2\xd2\x6d\xe0" "\x78\x8d\x19\xa4\xf0\x65\x47\x79\x7c\xfc\x14\x73\x95\x4c\x3d\x7e\xc3" "\xa4\x58\x3b\x4e\x90\x86\x19\xa1\x0a\x2f\x92\xee\xbe\xe7\x74\xc8\xf8" "\x2a\x75\xca\xb5\x86\x0b\xdd\x49\x44\x5d\x2e\x33\x73\x0a\xdb\x6a\x52" "\xe0\x78\x8a\xa2\x4b\x42\x67\xb4\x17\xd2\x50\x50\x22\xd6\x96\xdd\x4a" "\x70\xb3\x0a\xce\x66\xcb\xa3\x48\x6c\x8d\xf5\xcb\xf4\x37\xd2\xed\x22" "\x66\x55\x8f\xab\xf1\xa3\xf8\x83\x10\x32\xa9\x15\xa1\xeb\xc0\xa0\xc6" "\x4e\x62\x3b\x1a\x81\x4d\xa7\xa2\x2e\x65\x6f\x0a\xcc\xb0\x75\xd1\x0b" "\x70\x17\xa7\x67\xca\xc5\xad\x30\x4a\xd5\x8a\xa8\x1f\xe2\x2f\xfa\x16" "\x75\xb1\x11\x5e\x72\x15\xf0\x4e\x5d\xd4\xa8\xe8\x5a\x6a\xda\xea\xa7" "\xa9\x92\x58\x53\x91\x6a\x25\x60\x32\x92\x88\x22\x55\x5d\xa9\x58\x4e" "\xff\x89\x6e\x33\x50\xba\x61\x75\x48\x5d\x32\x83\x1c\xaa\x60\x9e\xa5" "\x74\xc6\x7c\x9e\x5a\xdc\xb3\x04\xb1\x65\x03\x6c\x44\xbf\x25\x2c\xfe" "\xbd\x22\x10\x33\x15\xf3\xf0\xf0\xf0\xe6\xa2\x63\xbf\x1e\xfe\xc5\x53" "\x5c\x5f\x43\xec\x7d\x39\xbf\xaf\x49\x58\xfe\xf9\xc2\x9e\x44\x37\x2d" "\x1d\x42\x2e\xec\x76\x76\x4f\x47\x65\xb9\x92\x57\x22\x32\xbd\x76\xc3" "\x25\x97\x33\x1b\xad\xe9\x77\x83\x30\x22\x73\x65\xe3\xc0\x80\x76\xd0" "\x1c\x5b\x68\x77\x22\xda\xc3\x59\xe1\x72\x42\xa8\xcf\xa5\xb3\xdd\x5c" "\x13\x2f\x15\x81\x31\x1e\x63\xe7\xc0\x85\xa3\xb7\x70\xa4\x98\xce\x20" "\xea\x7c\x4f\x9f\x57\x52\xfa\x1e\x2f\xdc\x51\xf5\xdc\xfe\x70\x2d\x65" "\xe5", 460); sprintf((char*)0x200003c8, "%023llo", (long long)-1); sprintf((char*)0x200003df, "0x%016llx", (long long)r[0]); *(uint16_t*)0x200003f1 = -1; syz_mount_image(/*fs=*/0x20000180, /*dir=*/0x200006c0, /*flags=*/0x1a424ac, /*opts=*/0x200001c0, /*chdir=*/1, /*size=*/0, /*img=*/0x20000d00); break; } } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); use_temporary_dir(); loop(); return 0; }