// https://syzkaller.appspot.com/bug?id=deb061ff946b02c2f4821f91683d89a68b2f45f8 // 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 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 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) { if (strstr(opts, "errors=panic") || strstr(opts, "errors=remount-ro") == 0) 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 < 4; 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 == 2) 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); } } void execute_call(int call) { switch (call) { case 0: memcpy((void*)0x20000000, "hfsplus\000", 8); memcpy((void*)0x200000c0, "./bus\000", 6); memcpy( (void*)0x20000bc0, "\x78\x9c\xec\xdd\x4d\x68\x1b\xd9\x1d\x00\xf0\xff\xc8\xb2\x6c\xb9\xe0" "\xf5\xee\x26\xbb\xa1\x2c\xd4\x6c\x60\x5b\x6a\x9a\xd8\x16\xde\xd6\xbd" "\x34\x2d\xa5\xf8\xb0\x94\x65\x7b\xe8\xd9\xc4\xca\x5a\x44\xf1\x2e\xb6" "\xb6\x38\xa1\x14\xf7\x8b\x5e\x7b\x08\xed\x35\x3d\xf8\xd6\x53\xa1\x77" "\x43\x7a\x6e\x6f\xb9\xfa\x18\x28\xe4\x92\x43\xf1\xcd\x65\x46\x4f\xb6" "\xfc\xfd\x1d\xc9\xed\xef\x67\x9e\xde\x7b\xf3\x66\xde\xfc\xf5\x97\x66" "\x34\x92\x30\x0a\xe0\xff\xd6\xdc\x44\x94\x37\x22\x8b\xb9\x89\x4f\x56" "\xf3\xfe\xe6\x7a\xad\xb9\xb9\x5e\x1b\x4a\xc3\xcd\x88\xc8\xdb\xa5\x88" "\x72\xbb\x8a\x6c\x29\x22\x7b\x1e\x71\x2f\xda\x25\xb2\x54\x52\x7b\xfb" "\xd0\xfd\x3c\x6d\xcc\x7e\xf6\xe2\xf5\xe6\xcb\x76\xaf\x9c\x4a\xb1\x5d" "\x29\x86\x77\xb6\x3f\xa7\xb5\x54\x62\x3c\x22\x06\x52\x7d\xd0\xe0\xb9" "\xe6\xbb\x9f\xea\xe1\x73\x87\xb7\x9b\xa1\x3c\x61\xb7\x3b\x89\x83\x5e" "\xdb\x3e\x60\xed\x2c\x9b\x5f\xf0\xb8\x05\xfa\x41\xd6\x7e\xdd\x3c\x60" "\x2c\x62\x24\xbd\xf6\x15\xd7\x04\xe9\xec\x50\x7a\xb3\xd1\x5d\xbe\x33" "\x9d\xe5\x00\x00\x00\xe0\x9a\x7a\x6b\x2b\xb6\x62\x35\x46\x7b\x1d\x07" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x5c\x27\xe9\xf7\xff\xb3\x54" "\x4a\x9d\xf6\x78\x64\x9d\xdf\xff\xaf\xa4\x65\x91\xda\xd7\xda\x46\xaf" "\x03\x00\x00\x00\x00\x00\x00\x00\x80\x4b\xf0\x8d\xad\xd8\x8a\xd5\x18" "\xed\xf4\xb7\xb3\xe2\x3b\xff\x0f\x8b\xce\x8d\xe2\xf6\x6b\xf1\x55\xac" "\x44\x3d\x96\xe3\x4e\xac\xc6\x7c\xb4\xa2\x15\xcb\x31\x15\x11\x63\x5d" "\x13\x55\x56\xe7\x5b\xad\xe5\xa9\x53\x6c\x39\x7d\xe8\x96\xd3\x87\x45" "\xb7\x7d\x25\xf7\x19\x00\x00\x00\x00\x00\x00\x00\xfe\x07\xfd\x26\xe6" "\x76\xbf\xff\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\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" "\xde\x1a\xee\x34\x06\x22\x22\x4b\xe5\x46\xa7\x3d\x16\xa5\x72\x5a\xa9" "\x92\xaf\xb4\x16\xf1\xaf\x4e\xfb\x3a\x1a\x4a\xf5\x46\x8f\xe3\x00\x00" "\x00\x80\x37\xe1\xad\xad\xd8\x8a\xd5\x18\xed\xf4\xb7\xb3\xe2\x3d\xff" "\x7b\xc5\xfb\xfe\xe1\xf8\x2a\x96\xa2\x15\x8d\x68\x45\x33\xea\xb1\x50" "\x7c\x16\xd0\x7e\xd7\x5f\xda\x5c\xaf\x35\x37\xd7\x6b\x8f\xf2\x72\x70" "\xde\x3f\xfd\x67\xbb\x70\xca\x30\x8a\x19\xd3\x67\x0f\x87\xef\xf9\x56" "\xb1\x46\x35\x1e\x44\xa3\x58\x72\x27\xee\xc7\x17\xd1\x8c\x85\x28\x15" "\x5b\xe6\x6e\x75\xe2\x39\x3c\xae\x5f\xbf\xca\xe7\xfe\x41\x72\xca\xc8" "\x16\x52\x9d\xdf\xf3\x3f\xa6\xba\x3f\x8c\x15\x19\x19\xdc\xc9\xc8\x64" "\x8a\x2d\xcf\xc6\xdb\xc7\x67\xe2\x87\xaf\x2e\xb4\xa7\xa9\x28\xed\x7c" "\xf2\x73\xe3\x0a\x72\x3e\x92\xea\x6c\x5f\xdd\x7b\xfb\x33\x31\xdd\xf5" "\xec\x7b\xef\xf8\x4c\x44\x7c\xf3\xef\x7f\xfd\xf9\x62\x73\xe9\xe1\xe2" "\x83\x95\xfe\xb9\x47\xe7\xb5\x3f\x13\xb5\xae\x4c\xbc\x7f\x86\x4c\x4c" "\x5c\xfb\x54\x4c\x6e\x47\x94\xb2\xdd\xa7\xe9\x5c\xfc\x24\x7e\x16\x13" "\x31\x1e\x9f\xc6\x72\x34\xe2\x17\x31\x1f\xad\xa8\xc7\x78\xfc\xb8\x68" "\xcd\xa7\x15\xf3\xdb\xb1\xe3\x33\x75\x6f\x4f\xef\xd3\x93\x22\xa9\xa4" "\xc7\xa5\x7d\x16\x2d\xc5\xcd\x9d\x91\x93\x63\xfa\xb0\xd8\x76\x34\x1a" "\xf1\xd3\xf8\x22\x16\xa2\x1e\x1f\x17\x7f\xd3\x31\x15\xdf\x8d\x99\x98" "\x89\xd9\xae\x47\xf8\xe6\x29\x8e\xfa\xd2\xd9\x8e\xfa\xdb\xdf\x4a\x8d" "\x6a\x44\xfc\x21\xd5\xfd\x21\xcf\xeb\xdb\x5d\x79\xed\x3e\xe7\x8e\x15" "\x63\xdd\x4b\x76\xb3\xf4\xce\xe5\x9f\x1b\xcb\x5f\x4f\x67\xf8\xbc\xfc" "\x36\xd5\xfd\x61\x7f\x26\xa6\xba\x32\xf1\xee\xf1\x99\xf8\x4b\x71\x9d" "\xb0\xd2\x5c\x7a\xb8\xbc\x38\xff\xe5\x29\xf7\xf7\x51\xaa\xf3\xe3\xe8" "\xf7\x7d\xf5\x2a\x91\x3f\x5f\xde\xc9\x1f\xac\xa2\xd7\xc9\xc9\xee\xf3" "\xf9\xdd\x03\x63\xed\x7c\x55\xd2\x37\x2e\xed\xb1\xd2\x81\xb1\x9b\x3b" "\x63\x27\x1d\xa9\x95\x74\x0d\x77\x70\xa6\xe9\x62\xec\xfd\x43\xc7\x6a" "\xc5\xd8\xad\xae\xb1\xc3\xae\xb7\x00\xe8\x7b\x23\xdf\x1e\xa9\x54\xff" "\x5d\xfd\x67\xf5\x59\xf5\x77\xd5\xc5\xea\x27\xc3\x3f\x1a\xfa\xde\xd0" "\x07\x95\x18\xfc\xc7\xe0\xf7\xcb\x93\x03\x1f\x95\x3e\xc8\xfe\x16\xcf" "\xe2\x57\xbb\xef\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\xf3\x5b\x79\xfc\xe4" "\xe1\x7c\xb3\x59\x5f\xbe\xb2\x46\xe7\xe7\x6f\xf2\x25\x7f\x1e\x88\x23" "\x56\xee\xfc\x8e\xd6\xd5\xc7\x73\xcd\x1b\xd1\x1f\x61\x68\xec\x69\x0c" "\x45\x5f\x84\x71\x99\x8d\x1e\x9f\x98\x80\x2b\x77\xb7\xf5\xe8\xcb\xbb" "\x2b\x8f\x9f\x7c\xa7\xf1\x68\xfe\xf3\xfa\xe7\xf5\xa5\xc1\x99\x99\xd9" "\xc9\xd9\x99\x8f\x6b\x77\x1f\x34\x9a\xf5\xc9\xf6\x6d\xaf\xa3\x04\xae" "\x42\xd7\x85\x25\x00\x00\x00\x00\x00\x00\x00\x00\x00\x70\x4d\x1c\xff" "\x6f\x00\x83\x69\xad\xbd\x43\x59\x79\xff\x92\x13\xfe\x65\x05\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x02\xe6\x26\xa2\xbc\x11\x59\x4c\x4d\xde\x99\xcc" "\xfb\x9b\xeb\xb5\x66\x5e\x22\xe6\xa2\x5d\x77\x94\x23\xa2\x14\x11\xd9" "\x2f\x23\xb2\xe7\x11\xf7\xa2\x5d\x62\xac\x6b\xba\xec\xa8\xfd\x3c\x6d" "\xcc\x7e\xf6\xe2\xf5\xe6\xcb\xdd\xb9\xca\x9d\xf5\x4b\xc7\x6d\x77\x94" "\x81\x3d\xbd\xb5\x54\x62\x3c\x0d\x8d\x9f\x75\xbe\x38\x7a\xbe\xfb\x17" "\x9e\x2f\xdb\xb9\x87\x79\xc2\x6e\x77\x12\x07\xbd\xf6\xdf\x00\x00\x00" "\xff\xff\x03\xab\x07\x44", 1553); syz_mount_image(0x20000000, 0x200000c0, 0x200008, 0x20000900, 4, 0x611, 0x20000bc0); break; case 1: memcpy((void*)0x20000000, "./file2\000", 8); syscall(__NR_unlink, 0x20000000ul); break; case 2: memcpy((void*)0x200000c0, "msdos\000", 6); memcpy((void*)0x20000100, ".\000", 2); *(uint8_t*)0x200007c0 = -1; memcpy( (void*)0x200007c1, "\xee\xa7\x3c\x3c\xa0\x47\x34\x9a\xb6\x6d\x52\x9f\xb1\xe2\xbd\xc6\x18" "\x75\xc6\xcc\xeb\xea\x30\xba\x1b\x89\x77\xc6\x32\xdd\xcb\xe0\xed\x04" "\xf9\x86\xb6\x8e\xe6\x00\x04\x4b\xd7\x5d\x3c\xfd\x10\xcc\x2e\xc8\x8c" "\xcf\xf0\x20\x44\x7c\xd9\xca\xde\xd4\xab\xf6\x57\x67\xe9\xdb\xbd\x7b" "\xd8\x41\xa8\xce\x3e\xb4\x4c\x71\x9a\x2e\x6c\x34\x1b\xf6\x8b\x2a\x0a" "\xf0\x4f\x1c\xc9\x51\xb1\x90\xc7\xfd\x36\xff\xdb\xd0\x62\x2c\xdc\x9b" "\x7c\x9a\x55\xb3\xf4\x65\xde\xf5\x74\x08\x14\x39\x5f\x09\x5f\xc4\x4a" "\x4c\xf6\xfe\x14\xb0\xd3\x1f\x38\x42\x14\xd5\x9a\x01\x05\xd5\x77\x55" "\x72\x15\x47\x39\x73\xf3\xb7\x01\x78\xf4\x9f\x0e\x48\xdb\xe1\x38\x56" "\x2f\x4d\x21\xca\xd5\x9f\xaf\xb7\xfb\xaf\x76\x46\x1c\x56\xfd\xd2\x09" "\x33\x29\xe2\xec\xe7\xcf\x96\x43\x5b\xca\x11\xa9\x0b\xa7\xf3\x1e\x69" "\xc4\xb7\x3b\xa3\xd1\x72\x90\x6f\xfc\x90\xf5\xde\x13\x4a\x69\x6a\x73" "\x1d\x20\xa9\xcf\x70\x00\x9a\x31\xf8\x3d\x4b\x77\x4b\x0d\x99\xde\x69" "\xf1\x4d\xb9\xcd\xbd\xe3\x83\x24\x51\x37\x98\xbb\xa5", 234); *(uint16_t*)0x200008ab = -1; *(uint64_t*)0x200008ad = -1; sprintf((char*)0x200008b5, "%023llo", (long long)-1); sprintf((char*)0x200008cc, "%023llo", (long long)-1); sprintf((char*)0x200008e3, "%023llo", (long long)-1); memcpy((void*)0x200008fa, "\x01\xe6\x76\xf4\xfc\x19\x04\xef\xc2\x97\xa3\xba\xa0\x83\xd7\xd5" "\x30\x48\x01\x4c\x35\x42\x9e\x76\x3c\x6f\x76\x63\x7c\xfd\x7d\x74" "\x91\xfe\x31\x36\x2d\x2a\xf6\xbc\xf1\x76\xcf\xa2\x49\xa2\xb3\x6a" "\x99\xee\x6b\x55\x42\xc2\x27\x63\xa0\x68\x88\x67\xeb\x2a\xc0\x9c" "\x50\x78\xd6\x12\xc0\x13\x3e\xf8\xa8\xf4\x00\x74\xa8\xe5\x40\xe5" "\xb2\x62\xac\x88\x9e\xa4\x4b\xc2\xa2\xbf\x39\xdd\x3d\xdf\xd9\x62" "\xda\x62\x4b\x3b\x25\xa0\x36\xd7\xe9\x46\x64\x08\x6a\x77\xf4\x9d" "\x81\xcf\x96\x30\x79\x4a\x2a\x15\xd9\xe3\x04\x2b\x8e\x67\xe8\x1d" "\xec\x65\x08\x51\xa4\x72\xe1\xd5\xc1\x4d\x7f\xf4", 140); *(uint8_t*)0x20000986 = 0; syz_mount_image(0x200000c0, 0x20000100, 0x1a484bc, 0x200007c0, 1, 0, 0x20000000); break; case 3: memcpy((void*)0x20000140, "./file2\000", 8); syscall(__NR_openat, 0xffffff9c, 0x20000140ul, 0x6a142ul, 0ul); break; } } 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); use_temporary_dir(); loop(); return 0; }