// https://syzkaller.appspot.com/bug?id=983b1f54c1223acdd606d7cb06e88a877f7f50ba // 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) { 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 < 5; 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 == 0) break; event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0) + (call == 1 ? 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*)0x200004c0, "ext4\000", 5); memcpy((void*)0x20000040, "./file0\000", 8); memcpy((void*)0x20000280, "\x71\x75\x6f\x74\x61\x2c\x6a\x71\x66\x6d\x5a\xfe\x7f\x21\x63\x31" "\x32\x9e\x6e\x8f\x75\x69\x64\x33\x32\x2c\x00\xee\x6a\xe2\x55\x57" "\xc4\x0e\x9e\x2d\xb5\x5d\x44\xd7\x24\xa9\x29\xbf\x36\xf6\x0b\x3b" "\xef\x2e\x2d\x7f\x0a\x78\xac\x95\x41\x17\x3c\x0e\x43\xbe\x28", 63); memcpy( (void*)0x20000540, "\x78\x9c\xec\xdd\xc1\x4f\x5c\x5b\x19\x00\xf0\xef\x5e\xa0\x50\x1e\xef" "\xc1\xd3\xb7\x50\xa3\xb6\xd6\xd6\x6a\x9a\xce\xc0\xb4\x25\x4d\x57\x75" "\xa3\x31\x4d\x13\x63\xe3\xca\x45\x8b\x30\x25\x84\x19\x86\x30\x43\x2d" "\xd8\x05\xfd\x1f\x4c\x6c\xe2\x4a\xff\x04\x17\x26\x2e\x4c\xba\x72\xef" "\x4e\x77\x6e\xea\xc2\xa4\x6a\xa3\x29\x26\x2e\xc6\xdc\x3b\x03\x05\xca" "\x00\x7d\x2d\x4c\xc2\xfd\xfd\x92\x93\x7b\xcf\x3d\x03\xdf\x39\x4c\xee" "\x39\xc3\x37\x30\x27\x80\xc2\x3a\x1f\x11\x97\x22\xe2\x4c\x44\x3c\x88" "\x88\xf1\xee\xf5\xa4\x5b\xe2\x76\xa7\x64\x8f\x7b\xfd\xea\xc9\xec\xe6" "\xab\x27\xb3\x49\xb4\xdb\xf7\xfe\x99\xe4\xed\xd9\xb5\xd8\xf1\x35\x99" "\x8f\x22\x62\x23\x22\x46\x22\xe2\x47\xdf\x8f\xf8\x69\xf2\x76\xdc\xe6" "\xda\xfa\xe2\x4c\xad\x56\x5d\xe9\xd6\xcb\xad\xfa\x72\xb9\xb9\xb6\x7e" "\x75\xa1\x3e\x33\x5f\x9d\xaf\x2e\x55\x2a\xd3\x53\xd3\x93\x37\xaf\xdd" "\xa8\x7c\xb0\xb1\x9e\xab\xff\xf6\xe5\xf7\x16\xee\xfc\xf8\x0f\xbf\xff" "\xda\x8b\x3f\x6d\x7c\xe7\xe7\x59\xb7\xc6\xba\x6d\x3b\xc7\xf1\x21\x75" "\x86\x3e\xb4\x1d\x27\x33\x18\x11\x77\x8e\x23\x58\x1f\x0c\x74\xc7\x73" "\xa6\xdf\x1d\xe1\x73\x49\x23\xe2\x0b\x11\x71\x21\xbf\xff\xc7\x63\x20" "\x7f\x36\x01\x80\xd3\xac\xdd\x1e\x8f\xf6\xf8\xce\x3a\x00\x70\xda\xa5" "\x79\x0e\x2c\x49\x4b\xdd\x5c\xc0\x58\xa4\x69\xa9\xd4\xc9\xe1\x7d\x16" "\xa3\x69\xad\xd1\x6c\x5d\x79\xd8\x58\x5d\x9a\xeb\xe4\xca\x26\x62\x28" "\x7d\xb8\x50\xab\x4e\x76\x73\x85\x13\x31\x94\x64\xf5\xa9\xfc\xfc\x4d" "\xbd\xb2\xa7\x7e\x2d\x22\x3e\x8d\x88\x5f\x0c\x9f\xcd\xeb\xa5\xd9\x46" "\x6d\xae\x9f\x2f\x7c\x00\xa0\xc0\x3e\xda\xb3\xfe\xff\x67\xb8\xb3\xfe" "\x03\x00\xa7\xdc\x48\xbf\x3b\x00\x00\x9c\x38\xeb\x3f\x00\x14\x8f\xf5" "\x1f\x00\x8a\xc7\xfa\x0f\x00\xc5\x63\xfd\x07\x80\xe2\xb1\xfe\x03\x40" "\xf1\x58\xff\x01\xa0\x50\x7e\x78\xf7\x6e\x56\xda\x9b\xdd\xcf\xbf\x9e" "\x7b\xb4\xb6\xba\xd8\x78\x74\x75\xae\xda\x5c\x2c\xd5\x57\x67\x4b\xb3" "\x8d\x95\xe5\xd2\x7c\xa3\x31\x9f\x7f\x66\x4f\xfd\xb0\xef\x57\x6b\x34" "\x96\xa7\xae\xc7\xea\xe3\x72\xab\xda\x6c\x95\x9b\x6b\xeb\xf7\xeb\x8d" "\xd5\xa5\xd6\xfd\xfc\x73\xbd\xef\x57\x87\x4e\x64\x54\x00\xc0\x41\x3e" "\x3d\xf7\xfc\x2f\x49\x44\x6c\xdc\x3a\x9b\x97\xd8\xb1\x97\x83\xb5\x1a" "\x4e\xb7\xb4\xdf\x1d\x00\xfa\x66\xa0\xdf\x1d\x00\xfa\xc6\x6e\x5f\x50" "\x5c\x7e\xc7\x07\xf6\xd9\xa2\x77\x97\x1d\x7f\x22\x74\x76\x57\xc3\xb3" "\xe3\xe9\x0f\x70\xfc\x2e\x7f\x59\xfe\x1f\x8a\x4a\xfe\x1f\x8a\x4b\xfe" "\x1f\x8a\x4b\xfe\x1f\x8a\xab\xdd\x4e\xec\xf9\x0f\x00\x05\x23\xc7\x0f" "\xbc\xc3\xfb\xff\xbb\x79\xff\x1f\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x02\x1b" "\xcb\x4b\x92\x96\xba\x7b\x81\x8f\x45\x9a\x96\x4a\x11\x1f\x47\xc4\x44" "\x0c\x25\x0f\x17\x6a\xd5\xc9\x88\xf8\x24\x22\xfe\x3c\x3c\x34\x9c\xd5" "\xa7\xfa\xdd\x69\x00\xe0\x3d\xa5\x7f\x4f\xba\xfb\x7f\x5d\x1e\xbf\x38" "\xb6\xb7\xf5\x4c\xf2\xdf\xe1\xfc\x18\x11\x3f\xfb\xd5\xbd\x5f\x3e\x9e" "\x69\xb5\x56\xa6\xb2\xeb\xff\xda\xbe\xde\x7a\xd6\xbd\x5e\xe9\x47\xff" "\x01\x80\xc3\x6c\xad\xd3\x5b\xeb\xf8\x96\xd7\xaf\x9e\xcc\x6e\x95\x93" "\xec\xcf\xcb\xef\x76\x36\x17\xcd\xe2\x6e\x76\x4b\xa7\x65\x30\x06\xf3" "\xe3\x48\x0c\x45\xc4\xe8\xbf\x93\x6e\xbd\x23\x7b\xbd\x32\xf0\x01\xe2" "\x6f\x3c\x8d\x88\x2f\xed\x37\xfe\x24\xcf\x8d\x4c\x74\x77\x3e\xdd\x1b" "\x3f\x8b\xfd\xf1\x89\xc6\x4f\x77\xc5\x4f\xf3\xb6\xce\x31\xfb\x59\x7c" "\xf1\xdd\x43\xf7\xdc\xd2\x15\x8a\xe2\x79\x36\xff\xdc\xde\xef\xfe\x4b" "\xe3\x7c\x7e\xdc\xff\xfe\x1f\xc9\x67\xa8\xf7\xb7\x35\xff\x6d\xbe\x35" "\xff\xa5\xdb\xf3\xdf\x40\x8f\xf9\xef\xfc\x51\x63\x5c\xff\xe3\x0f\x7a" "\xb6\x3d\x8d\xf8\xca\xe0\x7e\xf1\x93\xed\xf8\x49\x8f\xf8\x17\x8f\x18" "\xff\xaf\x5f\xfd\xfa\x85\x5e\x6d\xed\x5f\x47\x5c\x8e\xfd\xe3\xef\x8c" "\x55\x6e\xd5\x97\xcb\xcd\xb5\xf5\xab\x0b\xf5\x99\xf9\xea\x7c\x75\xa9" "\x52\x99\x9e\x9a\x9e\xbc\x79\xed\x46\xa5\x9c\xe7\xa8\xcb\x5b\x99\xea" "\xb7\xfd\xe3\xd6\x95\x4f\x0e\x1a\xff\x68\x8f\xf8\x23\x87\x8c\xff\xd2" "\x11\xc7\xff\x9b\xff\x3d\xf8\xc9\x37\x0e\x88\xff\xed\x6f\xee\xff\xfc" "\x7f\x76\x40\xfc\x6c\x4d\xfc\xd6\x11\xe3\xcf\x8c\xfe\xae\xe7\x5c\x9f" "\xc5\x9f\xeb\x31\xfe\xc3\x9e\xff\x2b\x47\x8c\xff\xe2\x6f\xeb\x73\x47" "\x7c\x28\x00\x70\x02\x9a\x6b\xeb\x8b\x33\xb5\x5a\x75\xc5\x89\x13\x27" "\x4e\xb6\x4f\xfa\x3d\x33\x01\xc7\xed\xcd\x4d\xdf\xef\x9e\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xbd\x9c\xc4\xbf\x13\xf5\x7b\x8c" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9c\x5e" "\xff\x0f\x00\x00\xff\xff\x9a\x4c\xd8\xf7", 1200); syz_mount_image(0x200004c0, 0x20000040, 0, 0x20000280, 1, 0x4ae, 0x20000540); break; case 1: memcpy((void*)0x200004c0, "ext4\000", 5); memcpy((void*)0x20000040, "./file0\000", 8); memcpy((void*)0x20000000, "quota", 5); *(uint8_t*)0x20000005 = 0x2c; memcpy((void*)0x20000006, "jqfmt=vfsv0", 11); *(uint8_t*)0x20000011 = 0x2c; memcpy((void*)0x20000012, "nouid32", 7); *(uint8_t*)0x20000019 = 0x2c; *(uint8_t*)0x2000001a = 0; memcpy( (void*)0x20000540, "\x78\x9c\xec\xdd\xc1\x4f\x5c\x5b\x19\x00\xf0\xef\x5e\xa0\x50\x1e\xef" "\x41\x63\x17\x6a\xd4\xd6\x5a\xad\xa6\xe9\x0c\x4c\x5b\xd2\x74\x55\x37" "\x1a\xd3\x34\x31\x36\xae\x5c\xb4\x08\x53\x42\x98\x61\x08\x33\xd4\x82" "\x5d\xd0\xff\xc1\xc4\x26\xae\xf4\x4f\x70\x61\xe2\xc2\xa4\x2b\xf7\xee" "\x74\xe7\xa6\x2e\x4c\xaa\x36\x9a\x62\xe2\x62\xcc\xbd\x33\x50\xa0\x0c" "\xd0\xd7\xc2\x24\xdc\xdf\x2f\x39\xb9\xf7\xdc\x33\x9d\xef\x9c\x4e\xee" "\x39\xc3\x37\x30\x27\x80\xc2\xba\x18\x11\x1b\x11\x71\x26\x22\x1e\x46" "\xc4\x78\xf7\x7a\xd2\x2d\x71\xa7\x53\xb2\xc7\xbd\x79\xfd\x74\x76\xf3" "\xf5\xd3\xd9\x24\xda\xed\xfb\xff\x4c\xf2\xf6\xec\x5a\xec\xf8\x37\x99" "\x4f\xba\xcf\x39\x12\x11\x3f\xfa\x7e\xc4\x4f\x93\x77\xe3\x36\xd7\xd6" "\x17\x67\x6a\xb5\xea\x4a\xb7\x5e\x6e\xd5\x97\xcb\xcd\xb5\xf5\x6b\x0b" "\xf5\x99\xf9\xea\x7c\x75\xa9\x52\x99\x9e\x9a\x9e\xbc\x75\xfd\x66\xe5" "\xa3\x8d\xf5\x42\xfd\xb7\xaf\xbe\xb7\x70\xf7\xc7\x7f\xf8\xfd\x57\x5f" "\xfe\x69\xe3\x3b\x3f\xcf\xba\x35\xd6\x6d\xdb\x39\x8e\x8f\xa9\x33\xf4" "\xa1\xed\x38\x99\xc1\x88\xb8\x7b\x1c\xc1\xfa\x60\xa0\x3b\x9e\x33\xfd" "\xee\x08\x9f\x4b\x1a\x11\xa5\x88\xb8\x94\xdf\xff\xe3\x31\x90\xbf\x9a" "\x00\xc0\x69\xd6\x6e\x8f\x47\x7b\x7c\x67\x1d\x00\x38\xed\xd2\x3c\x07" "\x96\xa4\xa5\x6e\x2e\x60\x2c\xd2\xb4\x54\xea\xe4\xf0\xce\xc7\x68\x5a" "\x6b\x34\x5b\x57\x1f\x35\x56\x97\xe6\x3a\xb9\xb2\x89\x18\x4a\x1f\x2d" "\xd4\xaa\x93\xdd\x5c\xe1\x44\x0c\x25\x59\x7d\x2a\x3f\x7f\x5b\xaf\xec" "\xa9\x5f\x8f\x88\x73\x11\xf1\x8b\xe1\xb3\x79\xbd\x34\xdb\xa8\xcd\xf5" "\xf3\x8d\x0f\x00\x14\xd8\x27\x7b\xd6\xff\xff\x0c\x77\xd6\x7f\x00\xe0" "\x94\x1b\xe9\x77\x07\x00\x80\x13\x67\xfd\x07\x80\xe2\xb1\xfe\x03\x40" "\xf1\x58\xff\x01\xa0\x78\xac\xff\x00\x50\x3c\xd6\x7f\x00\x28\x1e\xeb" "\x3f\x00\x14\xca\x0f\xef\xdd\xcb\x4a\x7b\xb3\xfb\xfd\xd7\x73\x8f\xd7" "\x56\x17\x1b\x8f\xaf\xcd\x55\x9b\x8b\xa5\xfa\xea\x6c\x69\xb6\xb1\xb2" "\x5c\x9a\x6f\x34\xe6\xf3\xef\xec\xa9\x1f\xf6\x7c\xb5\x46\x63\x79\xea" "\x46\xac\x3e\x29\xb7\xaa\xcd\x56\xb9\xb9\xb6\xfe\xa0\xde\x58\x5d\x6a" "\x3d\xc8\xbf\xd7\xfb\x41\x75\xe8\x44\x46\x05\x00\x1c\xe4\xdc\x85\x17" "\x7f\x49\x22\x62\xe3\xf6\xd9\xbc\xc4\x8e\xbd\x1c\xac\xd5\x70\xba\xa5" "\xfd\xee\x00\xd0\x37\x03\xfd\xee\x00\xd0\x37\x76\xfb\x82\xe2\xf2\x33" "\x3e\xb0\xcf\x16\xbd\xbb\xec\xf8\x15\xa1\xb3\xbb\x1a\x9e\x1f\x4f\x7f" "\x80\xe3\x77\xe5\x4b\xf2\xff\x50\x54\xf2\xff\x50\x5c\xf2\xff\x50\x5c" "\xf2\xff\x50\x5c\xed\x76\x62\xcf\x7f\x00\x28\x18\x39\x7e\xe0\x3d\x3e" "\xff\xdf\xcd\xe7\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x14\xd8\x58\x5e\x92" "\xb4\xd4\xdd\x0b\x7c\x2c\xd2\xb4\x54\x8a\xf8\x34\x22\x26\x62\x28\x79" "\xb4\x50\xab\x4e\x46\xc4\x67\x11\xf1\xe7\xe1\xa1\xe1\xac\x3e\xd5\xef" "\x4e\x03\x00\x1f\x28\xfd\x7b\xd2\xdd\xff\xeb\xca\xf8\xe5\xb1\xbd\xad" "\x67\x92\xff\x0e\xe7\xc7\x88\xf8\xd9\xaf\xee\xff\xf2\xc9\x4c\xab\xb5" "\x32\x95\x5d\xff\xd7\xf6\xf5\xd6\xf3\xee\xf5\x4a\x3f\xfa\x0f\x00\x1c" "\x66\x6b\x9d\xde\x5a\xc7\xb7\xbc\x79\xfd\x74\x76\xab\x9c\x64\x7f\x5e" "\x7d\xb7\xb3\xb9\x68\x16\x77\xb3\x5b\x3a\x2d\x83\x31\x98\x1f\x47\x62" "\x28\x22\x46\xff\x9d\x74\xeb\x1d\xd9\xfb\x95\x81\x8f\x10\x7f\xe3\x59" "\x44\x7c\x71\xbf\xf1\x27\x79\x6e\x64\xa2\xbb\xf3\xe9\xde\xf8\x59\xec" "\x4f\x4f\x34\x7e\xba\x2b\x7e\x9a\xb7\x75\x8e\xd9\xff\xc5\x17\xde\x3f" "\x74\xcf\x2d\x5d\xa1\x28\x5e\x64\xf3\xcf\x9d\xfd\xee\xbf\x34\x2e\xe6" "\xc7\xfd\xef\xff\x91\x7c\x86\xfa\x70\x5b\xf3\xdf\xe6\x3b\xf3\x5f\xba" "\x3d\xff\x0d\xf4\x98\xff\x2e\x1e\x35\xc6\x8d\x3f\xfe\xa0\x67\xdb\xb3" "\x88\x2f\x0f\xee\x17\x3f\xd9\x8e\x9f\xf4\x88\x7f\xf9\x88\xf1\xff\xfa" "\x95\xaf\x5d\xea\xd5\xd6\xfe\x75\xc4\x95\xd8\x3f\xfe\xce\x58\xe5\x56" "\x7d\xb9\xdc\x5c\x5b\xbf\xb6\x50\x9f\x99\xaf\xce\x57\x97\x2a\x95\xe9" "\xa9\xe9\xc9\x5b\xd7\x6f\x56\xca\x79\x8e\xba\xbc\x95\xa9\x7e\xd7\x3f" "\x6e\x5f\xfd\xec\xa0\xf1\x8f\xf6\x88\x3f\x72\xc8\xf8\xbf\x79\xc4\xf1" "\xff\xe6\x7f\x0f\x7f\xf2\xf5\x03\xe2\x7f\xfb\x1b\xfb\xbf\xfe\xe7\x0f" "\x88\x9f\xad\x89\xdf\x3a\x62\xfc\x99\xd1\xdf\xf5\x9c\xeb\xb3\xf8\x73" "\x3d\xc6\x7f\xd8\xeb\x7f\xf5\x88\xf1\x5f\xfe\x6d\x7d\xee\x88\x0f\x05" "\x00\x4e\x40\x73\x6d\x7d\x71\xa6\x56\xab\xae\x38\x71\xe2\xc4\xc9\xf6" "\x49\xbf\x67\x26\xe0\xb8\xbd\xbd\xe9\xfb\xdd\x13\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\xa0\x97\x93\xf8\x73\xa2\x7e\x8f\x11\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\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\xd3\xeb\xff\x01" "\x00\x00\xff\xff\x68\x36\xd9\x6e", 1198); syz_mount_image(0x200004c0, 0x20000040, 0, 0x20000000, 1, 0x4ae, 0x20000540); break; case 2: memcpy((void*)0x20000080, "./file0\000", 8); memcpy((void*)0x20000180, "trusted.overlay.upper\000", 22); syscall(__NR_setxattr, 0x20000080ul, 0x20000180ul, 0x200005c0ul, 0x2000ul, 0ul); break; case 3: memcpy((void*)0x20000080, "./file0\000", 8); memcpy((void*)0x20000180, "trusted.overlay.upper\000", 22); syscall(__NR_setxattr, 0x20000080ul, 0x20000180ul, 0x200005c0ul, 0x2000ul, 0ul); break; case 4: memcpy((void*)0x200000c0, "./file0/file0\000", 14); syscall(__NR_openat, 0xffffffffffffff9cul, 0x200000c0ul, 0x28200ul, 0x2dul); 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; }