// https://syzkaller.appspot.com/bug?id=2500b49acb2964873bef0f4195f768197e717888 // 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_ftruncate #define __NR_ftruncate 46 #endif #ifndef __NR_memfd_create #define __NR_memfd_create 279 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_openat #define __NR_openat 56 #endif #ifndef __NR_unlinkat #define __NR_unlinkat 35 #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; const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; retry: while (umount2(dir, umount_flags) == 0) { } dp = opendir(dir); if (dp == NULL) { if (errno == EMFILE) { exit(1); } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); while (umount2(filename, umount_flags) == 0) { } struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } int i; for (i = 0;; i++) { if (unlink(filename) == 0) break; if (errno == EPERM) { int fd = open(filename, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno != EBUSY || i > 100) exit(1); if (umount2(filename, umount_flags)) exit(1); } } closedir(dp); for (int i = 0;; i++) { if (rmdir(dir) == 0) break; if (i < 100) { if (errno == EPERM) { int fd = open(dir, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno == EBUSY) { if (umount2(dir, umount_flags)) exit(1); continue; } if (errno == ENOTEMPTY) { if (iter < 100) { iter++; goto retry; } } } exit(1); } } static void kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); for (int i = 0; i < 100; i++) { if (waitpid(-1, status, WNOHANG | __WALL) == pid) return; usleep(1000); } DIR* dir = opendir("/sys/fs/fuse/connections"); if (dir) { for (;;) { struct dirent* ent = readdir(dir); if (!ent) break; if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) continue; char abort[300]; snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", ent->d_name); int fd = open(abort, O_WRONLY); if (fd == -1) { continue; } if (write(fd, abort, 1) < 0) { } close(fd); } closedir(dir); } else { } while (waitpid(-1, status, __WALL) != pid) { } } static void reset_loop() { char buf[64]; snprintf(buf, sizeof(buf), "/dev/loop%llu", procid); int loopfd = open(buf, O_RDWR); if (loopfd != -1) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } } static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); write_file("/proc/self/oom_score_adj", "1000"); if (symlink("/dev/binderfs", "./binderfs")) { } } 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) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } 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); 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 (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "hfsplus\000", 8); memcpy((void*)0x20000080, "./file0\000", 8); memcpy( (void*)0x20000500, "\x70\x61\x72\x74\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30" "\x30\x30\x30\x30\x30\x34\x2c\x6e\x6c\x73\x3d\x69\x73\x6f\x38\x38\x35" "\x39\x2d\x31\x2c\x73\x65\x73\x73\x69\x6f\x6e\x3d\x30\x78\x66\x66\x66" "\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x66\x37\x66\x2c\x74\x79\x70" "\x65\x3d\x88\x3b\x7f\x38\x2c\x63\x72\x65\x61\x74\x6f\x72\x3d\xdd\xf2" "\xbd\x6c\x2c\x64\x65\x63\x6f\x6d\x70\x6f\x73\x65\x2c\x75\x69\x64\x3d", 102); sprintf((char*)0x20000566, "0x%016llx", (long long)0); memcpy( (void*)0x20000578, "\x2c\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30" "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x33\x2c\x63\x72\x65" "\x61\x74\x6f\x72\x3d\x85\xf1\x94\x71\x2c\x62\x61\x72\x72\x69\x65\x72" "\x2c\x63\x72\x65\x61\x74\x6f\x72\x3d\x65\xfe\x04\xc2\x2c\x75\x6d\x61" "\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30" "\x30\x30\x30\x30\x30\x30\x32\x31\x37\x2c\x64\x65\x63\x6f\x6d\x70\x6f" "\x73\x65\x2c\x66\x6f\x72\x63\x65\x2c\x75\x69\x64\x3d", 115); *(uint16_t*)0x200005eb = -1; memcpy((void*)0x200005ed, "\x2c\x75\x6d\x61\x73\x6b\x3d\x30\x30\x2c\x66\x6b\x72\x63\x65\x2c" "\x6e\x60\x49\x79\x62\xcb\x13\xd6\xef\x2c\x00\xe4\x1f\x00\x00\x00" "\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00", 42); memcpy( (void*)0x20001e80, "\x78\x9c\xec\xdd\x4b\x6c\x1c\x67\x1d\x00\xf0\xff\xac\xd7\x6b\xaf\x91" "\x52\xa7\xcd\xa3\xa0\x4a\x5d\x35\x52\x41\x58\x24\x76\xac\x14\xc2\x85" "\x80\x10\xf2\xa1\x42\x15\x1c\x38\x5b\x89\xd3\x58\xd9\x38\x95\xed\x22" "\x27\x42\xd4\xe5\x71\xe7\xc0\x89\x53\x39\xf8\x56\x71\x40\xe5\x1e\x09" "\xce\x54\x95\x10\x57\x1f\x2b\x21\xf5\xc2\xc9\x37\xa3\x99\x9d\x19\xcf" "\xbe\xed\xc4\xaf\x96\xdf\xcf\x9a\xf9\xbe\xf9\x5e\xf3\xcd\x37\x3b\xaf" "\x5d\x59\x13\xc0\xff\xad\xa5\xb9\xa8\x3f\x8b\x24\x96\xe6\xde\xde\x4a" "\x97\x77\x77\x16\xdb\x13\x3b\x8b\x53\x79\x76\x3b\x22\x1a\x11\x51\x8b" "\xa8\x77\x82\x48\xd6\x22\xcd\x9d\x28\x9b\xf8\x7a\x9a\x98\xc7\x93\xc1" "\x6b\x29\x0a\xef\x7e\xde\x09\xeb\xf9\x94\x95\xaf\x0d\xaf\x37\x50\xa3" "\x3f\x69\x3b\x9f\xa2\x95\xaf\xac\xd5\x9d\x3f\xdd\x09\x26\x87\xb4\xf8" "\x49\xef\xea\xbb\xda\xbb\xdb\xdf\xde\x11\x25\xe5\x16\xde\x89\x88\x6b" "\x79\x18\xf1\xa7\x17\x6a\x15\x5e\xd8\x7e\x9f\xed\x32\xef\xe3\x7f\x65" "\xf3\x51\xd5\x8f\x72\xdc\x02\xe7\x54\x52\xbd\xa2\x57\xcc\x46\xcc\xe4" "\x17\xd0\xec\x9e\x20\x3f\x3b\xd4\x4e\xb7\x77\xc7\x6f\xfb\xac\x3b\x00" "\x00\x00\x00\x47\xd5\x3c\x7a\x95\x97\xf6\x62\x2f\xb6\xe2\xc2\x49\x74" "\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\xbe\xaa\xba\xde\xff\xbf" "\x9d\xbd\xdf\x3f\x49\xa7\x56\x24\xc5\xfb\xff\x1b\x79\x5a\xe4\xf1\x73" "\x68\xfc\x8b\x10\x3f\x9b\xea\x84\xcf\x4e\xbe\x33\x00\x00\x00\x00\x00" "\x00\x00\x70\xe2\x5e\xdf\x8b\xbd\xd8\x8a\x0b\xc5\xf2\x7e\x92\xfd\xe6" "\xff\x46\xe5\x37\xfe\xaf\xc5\xfb\xb1\x11\x2b\xb1\x1e\xd7\x63\x2b\x96" "\x63\x33\x36\x63\x3d\x16\x22\x62\xb6\xd2\x50\x63\x6b\x79\x73\x73\x7d" "\x21\xab\x19\x71\x69\x44\xcd\x9b\xf1\xe9\x80\x9a\x37\x87\xf7\xf1\xce" "\x31\x6f\x33\x00\x00\x00\x00\x00\x00\x00\x9c\x73\xd3\x63\xf2\x1f\x4e" "\xf6\xa7\xfd\x26\x96\x0e\x7e\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\xf3\x20\x89\x98\xe8\x04\xd9\x74\xa9\x88\xcf\x46" "\xad\x1e\x11\xd3\x11\xd1\x48\xcb\x6d\x47\x7c\x5a\xc4\xbf\x24\x92\x41" "\x89\xcf\x4e\xbf\x1f\x00\x00\x00\xf0\x42\xa6\xbb\x17\x93\xe9\x43\xd4" "\x79\xe9\x83\xd8\x8b\xad\xb8\x50\x2c\xef\x27\xd9\x33\xff\x95\xec\x79" "\x79\x3a\xde\x8f\xb5\xd8\x8c\xd5\xd8\x8c\x76\xac\xc4\xbd\xfc\x19\x3a" "\x7d\xea\xaf\xed\xee\x2c\xb6\x77\x77\x16\x1f\xa5\x53\x7f\xbb\x3f\xfc" "\xe2\x48\x5d\xcf\x5a\x8c\xce\x77\x0f\x83\xd7\xfc\x6a\x56\xa2\x19\xf7" "\x63\x35\x4b\xb9\x1e\x77\x23\x89\xfd\x4c\x2d\x6f\xe5\xd5\xdd\x9d\xc5" "\x34\x7c\x54\xed\xd7\xc1\x63\xff\x87\x69\x9f\x92\x1f\xe4\x46\xf4\x66" "\xa2\x12\xbf\x97\xce\xae\x7e\x92\xc5\xff\xd0\xfd\x2d\x42\xfd\x48\x9b" "\xf8\x9c\x6a\x43\x73\x66\xb3\xdc\xc9\x72\x44\xe6\xf3\xbe\xa5\x35\x2e" "\x16\x23\x30\x78\x0f\x8d\xdd\x3b\xf5\x91\x6b\x5a\x88\x5a\xf9\xcd\xcf" "\xa5\xd1\x6b\x1a\x3c\xe6\x1f\x8e\x5e\xfb\x4c\x4f\xa9\x81\xdf\xdc\x9c" "\x89\xde\x91\xb8\x19\xb5\x72\x0f\x5d\x19\x3d\x12\x11\xdf\xfc\xdb\xc7" "\xbf\x78\xd0\x5e\x7b\xf8\xe0\xfe\xc6\xdc\xf9\xd9\xa4\x81\x3e\x18\x5b" "\xa2\x77\x24\x16\x2b\x23\x71\xf5\x2b\x34\x12\xe3\xcd\x67\x23\x71\xb9" "\x5c\x5e\x8a\x9f\xc4\xcf\x63\x2e\xbe\x98\x7a\x27\xd6\x63\x35\x7e\x19" "\xcb\xb1\x19\x2b\xad\x22\x7f\x39\xff\x3c\xa7\xf3\xd9\xd1\x23\xf5\xd9" "\x4c\x75\xe9\x9d\x71\x3d\x49\x8f\xc9\x56\x79\xfe\x1a\xd4\xa7\x56\x74" "\xf5\x29\x5a\xf1\xe3\x2c\xb6\x1c\x6f\x64\xfb\xf4\x42\xac\x46\x12\x8f" "\x23\x62\x25\xde\xca\xfe\x6e\xc6\x42\x79\x36\x38\xd8\xc3\x97\x07\xf7" "\xbb\x38\x29\x64\x47\x7d\xed\x10\x67\xda\x8a\x6b\xdf\xca\x82\x72\x98" "\xa2\x39\xbc\xec\x5f\x0e\xd7\xe4\x71\x49\x37\xeb\x62\x65\x5c\xab\xe7" "\xdc\xd9\x2c\x2f\x4f\xd9\x4e\x53\x0e\x46\xe9\xe5\x81\xa3\x54\x5c\xeb" "\x0e\x7f\x3d\xaa\xa8\x7f\x23\x8f\xa4\x2d\xfc\x76\xe4\xf5\xe1\xb4\x75" "\x8d\x44\x7e\x95\x28\x7a\xf7\xca\xb0\xcf\x79\x67\x48\xff\xbc\x9f\xce" "\x37\xda\x6b\x0f\xd7\x1f\x2c\xbf\x77\xc8\xf5\xbd\x99\x87\xe9\x71\xf4" "\xfb\x73\x75\x95\x48\xf7\xf0\xcb\x31\x9d\x6f\xdc\xc5\x6c\x9e\x64\xc7" "\xd4\x7c\x96\xf7\x4a\x79\x85\xed\x1e\xaf\x46\xfe\x8b\x4b\x47\xad\x2f" "\xef\x72\x59\xaf\x73\xa4\xfe\x34\x1e\xc7\xbd\xae\x23\xf5\xbb\x71\xab" "\xbc\x0d\xbc\x92\x95\x9e\xec\xbb\x62\xa5\x2d\x5d\x2d\x5b\xea\x3e\x87" "\xa7\x79\xe9\x9d\x56\xbd\xfc\x61\xa7\x7a\xbf\xf5\x38\xda\x9d\xfb\x21" "\x00\xce\xb7\x99\x6f\xcf\x34\x9a\xff\x69\xfe\xb3\xf9\x51\xf3\x77\xcd" "\x07\xcd\xb7\xa7\x7f\x34\xf5\xbd\xa9\xd7\x1a\x31\xf9\x8f\xc9\xef\xd7" "\xe7\x27\xde\xac\xbd\x96\xfc\x35\x3e\x8a\x5f\x1f\x3c\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\xcf\x6f\xe3\xc9\xd3\x87\xcb\xed\xf6\xca\xfa\xe0\x48" "\x6d\x70\x56\x32\xba\xd6\x72\x7b\xbf\x78\x91\xd8\xe0\x32\xd1\x97\x92" "\xe4\xaf\xca\x19\xd3\x9f\x34\x92\x6c\x3c\x79\xba\x3f\xa6\x4c\x6f\x24" "\x7a\x52\xa6\xf2\xee\x1d\xb2\xfa\x49\x46\x8a\xd7\xf6\x8c\x2f\xdc\x3a" "\xc1\x6e\x24\xdb\xbd\xfb\x6b\x7a\xfc\xbe\x28\xde\xf2\x94\xa7\x8c\xda" "\x8a\xa4\x6f\xc0\xd3\xca\xcf\xdd\xe7\x62\xcd\x07\x29\x93\xe7\x60\x57" "\xf6\x46\x5a\xc7\xd7\x60\xf1\x81\xad\x1e\x44\x47\xfe\xf4\x36\xbb\xf7" "\x57\x27\x6b\x22\x22\x06\x1e\x32\xa3\x4d\x1c\xc3\xc9\x07\x38\x53\x37" "\x36\x1f\xbd\x77\x63\xe3\xc9\xd3\xef\xac\x3e\x5a\x7e\x77\xe5\xdd\x95" "\xb5\xc9\x5b\xb7\x6e\xcf\xdf\xbe\xf5\xd6\xe2\x8d\xfb\xab\xed\x95\xf9" "\xce\xbc\x52\xe1\x54\x5e\x7e\x0b\x9c\x86\xea\xed\x44\xa9\x11\x11\xaf" "\x8f\xaf\x3b\xe2\x45\xad\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\x09" "\x3a\x8d\xff\x85\x38\xeb\x6d\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xbe\xdc\x96" "\xe6\xa2\xfe\x2c\x92\x58\x98\xbf\x3e\x3f\x95\xa7\xed\xee\x2c\xb6\xab" "\x61\x47\x3d\x22\x6a\x11\x91\xfc\x2a\x22\xf9\x7b\xc4\x9d\xe8\x4c\x31" "\x5b\x69\x2e\x19\xb6\x9e\x3f\xae\xde\xfe\xd9\xbf\xff\xbb\xfb\xf9\x41" "\x5b\xf5\xa2\x7c\x2d\x62\x7b\x68\xbd\xc3\xd9\xce\xa7\x68\x45\xc4\x44" "\x1e\x96\x76\x86\x57\x9c\x3d\x44\x7b\x77\x7b\xdb\xeb\xd7\x38\x88\x4e" "\x0d\xc8\x4e\xca\x91\x49\x07\xec\x5a\x31\x70\x70\xd6\xfe\x17\x00\x00" "\xff\xff\x77\x11\xe5\x7c", 1774); syz_mount_image( /*fs=*/0x20000000, /*dir=*/0x20000080, /*flags=MS_LAZYTIME|MS_I_VERSION|MS_NOEXEC|MS_NODEV*/ 0x280000c, /*opts=*/0x20000500, /*chdir=*/1, /*size=*/0x6ee, /*img=*/0x20001e80); break; case 1: memcpy((void*)0x20000040, "cpuset.effective_cpus\000", 22); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000040ul, /*flags=*/0x275a, /*mode=*/0); if (res != -1) r[0] = res; break; case 2: syscall(__NR_ftruncate, /*fd=*/r[0], /*len=*/0x2000009ul); break; case 3: memcpy((void*)0x200001c0, "./file0/file1\000", 14); syscall(__NR_unlinkat, /*fd=*/0xffffff9c, /*path=*/0x200001c0ul, /*flags=*/0ul); 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); const char* reason; (void)reason; for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }