// https://syzkaller.appspot.com/bug?id=fba1b3ae3426bf4d77e9b131e07d44e18ad0bbb5 // 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, 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; retry: const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; 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")) { } } 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)); 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*)0x200000c0, "ext4\000", 5); memcpy((void*)0x20000500, "./bus\000", 6); memcpy((void*)0x20000040, "delalloc", 8); *(uint8_t*)0x20000048 = 0x2c; memcpy((void*)0x20000049, "data=ordered", 12); *(uint8_t*)0x20000055 = 0x2c; memcpy((void*)0x20000056, "block_validity", 14); *(uint8_t*)0x20000064 = 0x2c; *(uint8_t*)0x20000065 = 0; memcpy( (void*)0x20001000, "\x78\x9c\xec\xdd\x41\x6f\x1b\x59\x1d\x00\xf0\xff\x4c\x92\x26\x9b\xcd" "\x6e\xb2\xb0\x07\x40\xc0\x96\x65\xa1\xa0\xaa\x76\xe2\xee\x46\xab\x3d" "\x95\x0b\x08\xad\x56\x42\xac\x38\x71\x68\x43\xe2\x46\x51\xec\x38\x8a" "\x9d\xd2\x84\x1e\xd2\xef\x80\x44\x25\x4e\xf0\x11\x38\x20\x71\x40\xea" "\x89\x3b\x37\xb8\x71\x29\x07\xa4\x02\x15\xa8\x41\xe2\x60\x34\xe3\x49" "\x9a\x26\x76\x12\xd1\x34\xee\x66\x7e\x3f\xe9\x69\xe6\xbd\xe7\xf8\xff" "\x5e\xac\x79\x6f\xfc\x12\xfb\x05\x50\x5a\x97\x23\x62\x27\x22\x2e\x45" "\xc4\xad\x88\x98\x2e\xca\x93\x22\xc5\x8d\x5e\xca\x1e\xf7\xf4\xc9\xbd" "\xc5\xdd\x27\xf7\x16\x93\xe8\x76\x3f\xfd\x47\x92\xd7\x67\x65\x71\xe0" "\x67\x32\xaf\x17\xcf\x39\x11\x11\x3f\xfc\x5e\xc4\x4f\x92\xa3\x71\xdb" "\x5b\xdb\xab\x0b\x8d\x46\x7d\xa3\xc8\x57\x3b\xcd\xf5\x6a\x7b\x6b\xfb" "\xda\x4a\x73\x61\xb9\xbe\x5c\x5f\xab\xd5\xe6\xe7\xe6\x67\x3f\xbc\xfe" "\x41\xed\xcc\xfa\xfa\x4e\xf3\x37\x8f\xbf\xbb\xf2\xf1\x8f\x7e\xff\xbb" "\xaf\x3c\xfa\xe3\xce\xb7\x7f\x96\x35\x6b\xaa\xa8\x3b\xd8\x8f\xb3\xd4" "\xeb\xfa\xd8\x7e\x9c\xcc\x68\x44\x7c\xfc\x32\x82\x0d\xc1\x48\xd1\x9f" "\x4b\xc3\x6e\x08\xff\x97\x34\x22\x3e\x17\x11\xef\xe6\xd7\xff\x74\x8c" "\xe4\xaf\x26\x00\x70\x91\x75\xbb\xd3\xd1\x9d\x3e\x98\x07\x00\x2e\xba" "\x34\x5f\x03\x4b\xd2\x4a\xb1\x16\x30\x15\x69\x5a\xa9\xf4\xd6\xf0\xde" "\x8e\xc9\xb4\xd1\x6a\x77\xae\xde\x6e\x6d\xae\x2d\xf5\xd6\xca\x66\x62" "\x2c\xbd\xbd\xd2\xa8\xcf\x16\x6b\x85\x33\x31\x96\x64\xf9\xb9\xfc\xfc" "\x59\xbe\x76\x28\x7f\x3d\x22\xde\x8a\x88\x9f\x8f\xbf\x96\xe7\x2b\x8b" "\xad\xc6\xd2\x30\x6f\x7c\x00\xa0\xc4\x5e\x3f\x34\xff\xff\x7b\xbc\x37" "\xff\x03\x00\x17\xdc\xc4\xb0\x1b\x00\x00\x9c\x3b\xf3\x3f\x00\x94\x8f" "\xf9\x1f\x00\xca\xc7\xfc\x0f\x00\xe5\x63\xfe\x07\x80\xf2\x31\xff\x03" "\x40\xf9\x98\xff\x01\xa0\x54\x7e\xf0\xc9\x27\x59\xea\xee\x16\xdf\x7f" "\xbd\x74\x67\x6b\x73\xb5\x75\xe7\xda\x52\xbd\xbd\x5a\x69\x6e\x2e\x56" "\x16\x5b\x1b\xeb\x95\xe5\x56\x6b\x39\xff\xce\x9e\xe6\x49\xcf\xd7\x68" "\xb5\xd6\xe7\xde\x8f\xcd\xbb\xd5\x4e\xbd\xdd\xa9\xb6\xb7\xb6\x6f\x36" "\x5b\x9b\x6b\x9d\x9b\xf9\xf7\x7a\xdf\xac\x8f\x9d\x4b\xaf\x00\x80\xe3" "\xbc\xf5\xce\xc3\x3f\x27\x11\xb1\xf3\xd1\x6b\x79\x8a\x03\x7b\x39\x98" "\xab\xe1\x62\x4b\x87\xdd\x00\x60\x68\x46\x86\xdd\x00\x60\x68\xec\xf6" "\x05\xe5\xe5\x3d\x3e\xd0\x67\x8b\xde\xe7\x0c\xfc\x17\xa1\x07\x47\x4a" "\xbc\xa5\x80\xcf\x88\x2b\x5f\xb4\xfe\x0f\x65\x65\xfd\x1f\xca\xcb\xcd" "\x3a\x94\x97\xf5\x7f\x28\xaf\x6e\x37\xb1\xe7\x3f\x00\x94\x8c\x35\x7e" "\xe0\x0c\xff\xfe\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa5\x31\x95\xa7\x24" "\xad\x14\x7b\x81\x4f\x45\x9a\x56\x2a\x11\x6f\x44\xc4\x4c\x8c\x25\xb7" "\x57\x1a\xf5\xd9\x88\x78\x33\x22\xfe\x34\x3e\x36\x9e\xe5\xe7\x86\xdd" "\x68\x00\xe0\x05\xa5\x7f\x4b\x8a\xfd\xbf\xae\x4c\xbf\x37\x75\xb8\xf6" "\x52\xf2\x9f\xf1\xfc\x18\x11\x3f\xfd\xe5\xa7\xbf\xb8\xbb\xd0\xe9\x6c" "\xcc\x65\xe5\xff\xdc\x2f\xef\x3c\x28\xca\x6b\xc3\x68\x3f\x00\x70\x92" "\xbd\x79\x7a\x6f\x1e\xdf\xf3\xf4\xc9\xbd\xc5\xbd\x74\x9e\xed\x79\xfc" "\x9d\xde\xe6\xa2\x59\xdc\xdd\x22\xf5\x6a\x46\x63\x34\x3f\x4e\xc4\x58" "\x44\x4c\xfe\x2b\x29\xf2\x3d\xd9\xfd\xca\xc8\x19\xc4\xdf\xb9\x1f\x11" "\x5f\xe8\xd7\xff\x24\x5f\x1b\x99\x29\x76\x3e\x3d\x1c\x3f\x8b\xfd\xc6" "\xb9\xc6\x4f\x9f\x8b\x9f\xe6\x75\xbd\x63\xf6\xbb\xf8\xfc\x19\xb4\x05" "\xca\xe6\x61\x36\xfe\xdc\xe8\x77\xfd\xa5\x71\x39\x3f\xf6\xbf\xfe\x27" "\xf2\x11\xea\xc5\xed\x8d\x7f\xbb\x47\xc6\xbf\x74\x7f\xfc\x1b\x19\x30" "\xfe\x5d\x3e\x6d\x8c\xf7\xff\xf0\xfd\x81\x75\xf7\x23\xbe\x34\xda\x2f" "\x7e\xb2\x1f\x3f\x19\x10\xff\xbd\x53\xc6\xff\xcb\x97\xbf\xfa\xee\xa0" "\xba\xee\xaf\x22\xae\x44\xff\xf8\x07\x63\x55\x3b\xcd\xf5\x6a\x7b\x6b" "\xfb\xda\x4a\x73\x61\xb9\xbe\x5c\x5f\xab\xd5\xe6\xe7\xe6\x67\x3f\xbc" "\xfe\x41\xad\x9a\xaf\x51\x57\xf7\x56\xaa\x8f\xfa\xfb\x47\x57\xdf\x3c" "\xae\xff\x93\x03\xe2\x4f\x9c\xd0\xff\x6f\x9c\xb2\xff\xbf\xfe\xef\xad" "\x1f\x7f\xed\x98\xf8\xdf\xfa\x7a\xff\xd7\xff\xed\x63\xe2\x67\x73\xe2" "\x37\x4f\x19\x7f\x61\xf2\xb7\x03\xb7\xef\xce\xe2\x2f\x0d\xe8\xff\x49" "\xaf\xff\xd5\x53\xc6\x7f\xf4\xd7\xed\xa5\x53\x3e\x14\x00\x38\x07\xed" "\xad\xed\xd5\x85\x46\xa3\xbe\xd1\xe7\xe4\xc6\xe0\x2a\x27\x67\x70\x92" "\xdd\x43\xbd\x02\xcd\x28\xdf\x49\x32\xfa\x4a\x34\xe3\xd5\x3e\x19\xf6" "\xc8\x04\xbc\x6c\xcf\x2e\xfa\x61\xb7\x04\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x18\x64\xd0\xa7\x7f\xba\x85\xb3\xf8\x38\xd1\xb0\xfb" "\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\xc0\xc5" "\xf5\xbf\x00\x00\x00\xff\xff\xb9\x22\xda\xef", 1218); syz_mount_image(/*fs=*/0x200000c0, /*dir=*/0x20000500, /*flags=MS_NODEV|MS_DIRSYNC*/ 0x84, /*opts=*/0x20000040, /*chdir=*/0x21, /*size=*/0x4c2, /*img=*/0x20001000); break; case 1: memcpy((void*)0x20000340, "./bus\000", 6); syscall(__NR_open, /*file=*/0x20000340ul, /*flags=O_SYNC|O_NOCTTY|O_NOATIME|O_CREAT|FASYNC|0x2*/ 0x143142ul, /*mode=*/0ul); break; case 2: memcpy((void*)0x20000380, "/dev/loop", 9); *(uint8_t*)0x20000389 = 0x30; *(uint8_t*)0x2000038a = 0; memcpy((void*)0x20000140, "./bus\000", 6); syscall(__NR_mount, /*src=*/0x20000380ul, /*dst=*/0x20000140ul, /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul); break; case 3: memcpy((void*)0x20000000, "./bus\000", 6); res = syscall(__NR_open, /*file=*/0x20000000ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[0] = res; break; case 4: *(uint64_t*)0x20000540 = 0; *(uint64_t*)0x20000548 = 0; *(uint64_t*)0x20000550 = 0; *(uint64_t*)0x20000558 = 0; *(uint64_t*)0x20000560 = 7; *(uint32_t*)0x20000568 = 0; *(uint32_t*)0x2000056c = 0; *(uint32_t*)0x20000570 = 0; *(uint32_t*)0x20000574 = 0; memcpy((void*)0x20000578, "\xef\x35\x9f\x41\x3b\xb9\x38\x52\xf7\xd6\xa4\xae\x6d\xdd\xfb\xd1" "\xce\x5d\x29\xc2\xee\x5e\x5c\xa9\x00\x0f\xf8\xee\x09\xe7\x37\xff" "\x0e\xdf\x11\x0f\xf4\x11\x76\x39\xc2\xeb\x4b\x78\xc6\x60\xe6\x77" "\xdf\x70\x19\x05\xb9\xaa\xfa\xb4\xaf\xaa\xf7\x55\xa3\xf6\xa0\x04", 64); memcpy((void*)0x200005b8, "\x03\x6c\x47\xc6\x78\x08\x20\xd1\xcb\xf7\x96\x6d\x61\xed\xcf\x33" "\x52\x63\xbd\x9b\xff\xbc\xc2\x54\x2d\xed\x71\x03\x82\x59\xca\x17" "\x1c\xe1\xa3\x11\xef\x54\xec\x32\xd7\x1e\x14\x10\x9d\xc0\x93\xfc" "\xe4\x7d\x85\x27\x20\x36\xdc\x78\x38\x8e\x3d\xc1\x77\xe9\xb4\x96", 64); memcpy((void*)0x200005f8, "\xf2\x83\x59\x73\x8e\x22\x9a\x4c\x66\x81\x00\x00\x00\x00\x00\x00" "\x00\xe6\xbb\xc2\xeb\xce\x21\xaa\x45\xa7\xfe\xa6\x18\x07\x66\xbb", 32); *(uint64_t*)0x20000618 = 0; *(uint64_t*)0x20000620 = 0; syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4c04, /*arg=*/0x20000540ul); break; } } 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); use_temporary_dir(); loop(); return 0; }