// https://syzkaller.appspot.com/bug?id=b6dfb30fb777f2cd5b08d9927c6d7a5fbd25029f // 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_fcntl #define __NR_fcntl 25 #endif #ifndef __NR_fdatasync #define __NR_fdatasync 83 #endif #ifndef __NR_getdents64 #define __NR_getdents64 61 #endif #ifndef __NR_madvise #define __NR_madvise 233 #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_write #define __NR_write 64 #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 < 9; 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 (;;) { 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[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000000, "hfsplus\000", 8); memcpy((void*)0x20002380, "./file0\000", 8); memcpy( (void*)0x20000900, "\x78\x9c\xec\xdd\x4d\x6c\x1c\x67\x19\x00\xe0\x77\xd6\xeb\xf5\xae\x81" "\xd4\x69\xd3\xa4\xa0\x48\x5d\x35\x52\x41\x58\x24\x76\x8c\x0b\xe6\x42" "\x40\x08\x7c\xa8\x50\x55\x0e\x9c\x57\x89\xd3\x58\xd9\x38\x95\xed\x22" "\x27\x42\xd4\xe1\xe7\xce\xa1\x07\xc4\xa9\x1c\x7c\xab\x38\xa0\x72\x8f" "\x04\x67\xaa\x4a\xa8\x57\x1f\x38\x54\x42\xea\xa5\x27\xdf\x8c\x66\x76" "\x66\x77\x6d\x8f\x77\xd7\x89\x63\xbb\xf4\x79\xac\x99\xf9\x66\xbe\xdf" "\x79\x67\x67\x66\x7f\x64\x4d\x00\x5f\x5a\x8b\xd3\x51\x7d\x1c\x49\x2c" "\x4e\xbf\xbe\x91\xae\x6f\x6f\xcd\xb5\xc7\xb6\xe6\x26\xf2\xec\x76\x44" "\xd4\x22\xa2\x12\x51\xed\x2c\x22\x59\xc9\xf3\xbe\x7a\x39\x6e\xa4\xcb" "\xaf\xa7\x1b\xf3\x6d\xc9\x61\xfd\xbc\xb7\xbc\xf0\xe6\x27\x9f\x6f\x7f" "\xda\x59\xab\xe6\x53\x56\x3e\x19\x54\xaf\x44\xed\xe0\xa6\xcd\x7c\x8a" "\x66\x44\x8c\xe5\xcb\x83\xc6\x0f\x69\xf1\xc3\xfd\xdd\xef\x69\xef\xe6" "\xa1\xed\x8d\xaa\xb7\x87\x69\xc0\xae\xe4\xcb\x88\x3f\x3f\x55\xab\xf0" "\xd4\x76\x0f\xd8\xec\xe6\x7d\xf0\xef\x6c\x3e\xa8\xfa\x51\xce\x5b\xe0" "\x8c\x4a\x3a\xf7\xcd\x03\xa6\x22\x26\x23\xa2\x1e\x11\xd9\x7b\x82\xfc" "\xea\x50\x39\xd9\xd1\x1d\xbf\xcd\xd3\x1e\x00\x00\x00\x00\x1c\x55\xe3" "\xe8\x55\x9e\xdb\x89\x9d\xd8\x88\x73\xcf\x62\x38\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\xf0\xff\x2a\x7f\xfe\x7f\x92\x4f\x95\x22\xdd\x8c" "\xa4\x78\xfe\x7f\x2d\xdf\x16\x79\xfa\x0c\x1a\xfe\x20\xc4\x8f\x27\x3a" "\xcb\xc7\xcf\x7e\x30\x00\x00\x00\x00\x00\x00\x00\xf0\xcc\xbd\xbc\x13" "\x3b\xb1\x11\xe7\x8a\xf5\xdd\x24\xfb\xcd\xff\x95\xbe\xdf\xf8\xbf\x12" "\xef\xc4\x5a\x2c\xc5\x6a\x5c\x8d\x8d\x68\xc5\x7a\xac\xc7\x6a\xcc\x46" "\xc4\x54\x5f\x43\xb5\x8d\xd6\xfa\xfa\xea\x6c\x56\x33\xe2\xc2\x80\x9a" "\xd7\xe3\xa3\x92\x9a\xd7\x0f\x1f\xe3\x8d\x63\xde\x67\x00\x00\x00\x00" "\x00\x00\x00\x38\xe3\xea\x43\xf2\xef\x8e\x1f\xdc\xf6\xdb\x58\xec\xfd" "\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\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x67\x41" "\x12\x31\xd6\x59\x64\xd3\x85\x22\x3d\x15\x95\x6a\x44\xd4\x8b\x72\x9b" "\x11\x1f\x45\x44\xed\x74\x47\x7b\x24\x49\xd9\xc6\xc7\x27\x3f\x0e\x00" "\x00\x00\x78\x2a\xf5\xbd\xab\x49\x7d\x84\x3a\xcf\xbd\x1b\x3b\xb1\x11" "\xe7\x8a\xf5\xdd\x24\xfb\xcc\x7f\x31\xfb\xbc\x5c\x8f\x77\x62\x25\xd6" "\x63\x39\xd6\xa3\x1d\x4b\x71\x2b\xff\x0c\x9d\x7e\xea\xaf\x6c\x6f\xcd" "\xb5\xb7\xb7\xe6\xee\xa5\xd3\xc1\x76\x7f\xf4\xd9\x91\x86\x9e\xb5\x18" "\x9d\xef\x1e\xca\x7b\x7e\x29\x2b\xd1\x88\xdb\xb1\x9c\x6d\xb9\x1a\x37" "\x23\x89\xdd\x4c\x25\x6f\xe5\xa5\xed\xad\xb9\x74\x79\xaf\x7c\x5c\x8f" "\xd2\x31\x25\x3f\xcc\x0d\x18\xcd\x58\x5f\xfa\x56\x3a\xbb\xf4\x61\x96" "\xfe\xe3\xde\x6f\x11\xaa\x47\xda\xc5\x27\x54\x39\x34\x67\x2a\xcb\x1d" "\xef\x46\x64\x26\x1f\x5b\x5a\xe3\x7c\x11\x81\xf2\x48\x0c\x3d\x3a\xd5" "\x81\x3d\xcd\x46\xa5\xfb\xcd\xcf\x85\xc1\x3d\x95\xc7\xfc\xd1\xe0\xde" "\x27\xf7\x95\x2a\xfd\xe6\xe6\x54\xec\x8f\xc4\xf5\xa8\x74\x8f\xd0\xc5" "\xc1\x91\x88\xf8\xe6\xdf\x3f\xf8\xe5\x9d\xf6\xca\xdd\x3b\xb7\xd7\xa6" "\xcf\xce\x2e\x95\x7a\x77\x68\x89\x6e\x24\xbe\x5b\x5c\x66\x7a\x91\xb8" "\x34\x72\x24\x1a\xc7\x3d\xf0\x53\x30\x93\xed\xfb\x8b\xdd\xf5\xc5\xf8" "\x69\xfc\x22\xa6\xe3\xb3\x89\x37\x62\x35\x96\xe3\x57\xd1\x8a\xf5\x58" "\x6a\x16\xf9\xad\xfc\xf5\x9c\xce\xa7\x06\x47\xea\xe3\xc9\xfe\xb5\x37" "\x86\x8d\x24\x3d\x27\x9b\xdd\xeb\x57\xd9\x98\x9a\xb1\x67\x4c\xd1\x8c" "\x9f\x64\xa9\x56\xbc\x92\x1d\xd3\x73\xb1\x1c\x49\xdc\x8f\x88\xa5\x78" "\x2d\xfb\xbb\x1e\xb3\xdd\xab\x41\xef\x08\xbf\x38\xc2\x59\x5f\x19\xe1" "\x4a\xdb\xe7\xca\xb7\xb2\x45\x37\x4c\x31\xe0\xb5\xf1\xd7\xd1\x9a\x3c" "\x2e\x69\x5c\xcf\xf7\xc5\xb5\xff\x9a\x3b\x95\xe5\xf5\x6f\xe9\x45\xe9" "\xf9\xd2\x28\x15\xf7\xba\xd1\xef\x47\x7d\xaa\xdf\xc8\x13\x69\x0b\xbf" "\x1b\x78\x7f\x38\x69\xfb\x23\x31\xdb\x17\x89\x17\x0e\x7b\xbd\x74\x42" "\xfa\x97\xdd\x74\xbe\xd6\x5e\xb9\xbb\x7a\xa7\xf5\xf6\x88\xfd\xbd\x9a" "\x2f\xd3\xf3\xe8\x0f\x67\xea\x2e\x51\x8b\x47\xf1\x7c\xd4\xf3\x9d\x3b" "\x9f\xcd\x93\xec\x9c\x9a\xc9\x8e\xfe\x0b\xdd\x3b\xec\xde\x78\xd5\xf2" "\x5f\x5c\x3a\x2a\xfb\xf3\x7e\xf6\xa7\x6e\xbd\xce\x99\xfa\xf3\xb8\x1f" "\xb7\xf6\x9c\xa9\xdf\x8b\xf9\x98\x8f\x85\xac\xa5\x8b\x59\xe9\xf1\x03" "\x77\xac\x34\xef\x52\xb7\xa5\xfe\xbc\xb9\x2c\x2f\x7d\xa7\x55\xed\xfe" "\xb0\xd3\xff\x7e\xeb\x7e\xb4\x3b\xef\x87\x00\x38\xdb\x26\xbf\x3d\x59" "\x6b\xfc\xb7\xf1\xaf\xc6\xfb\x8d\xdf\x37\xee\x34\x5e\xaf\xff\x78\xe2" "\xfb\x13\x97\x6b\x31\xfe\xcf\xf1\x1f\x54\x67\xc6\x5e\xad\x5c\x4e\xfe" "\x16\xef\xc7\x6f\x7a\x9f\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\x27\xb7\xf6" "\xe0\xe1\xdd\x56\xbb\xbd\xb4\x5a\x9e\xa8\x94\x67\x25\x83\x6b\xb5\xda" "\xbb\xc5\x83\xc4\x06\x94\xd9\x93\x48\xf2\x47\xe5\x8c\x50\x38\x59\x7b" "\xf0\x70\x77\x68\x83\x83\x13\x13\xf9\xf0\x9e\xb0\xfa\x71\x26\x8a\xc7" "\xa8\x0d\x2f\xdc\x7c\x86\xc3\x48\x36\xf7\x1f\xaf\xfa\xf0\x63\x51\x3c" "\xe5\x69\x84\x2e\x92\x03\x01\x4f\x2b\x3f\xf1\x98\x8b\x9e\x7b\x5b\xc6" "\xcf\xc0\xa1\xdc\x9f\x68\x1e\x5f\x83\xc5\x0b\xb6\x2f\x6b\xf4\x57\xef" "\x7f\xbe\xd6\xa9\xdc\x28\x3b\x5e\x63\x11\x51\x56\x6b\xc8\x85\x63\x6c" "\x4f\x8b\xc0\x17\xd0\xb5\xf5\x7b\x6f\x5f\x5b\x7b\xf0\xf0\x3b\xcb\xf7" "\x5a\x6f\x2d\xbd\xb5\xb4\x32\x3e\x3f\xbf\x30\xb3\x30\xff\xda\xdc\xb5" "\xdb\xcb\xed\xa5\x99\xce\xbc\xaf\xc2\x89\x3c\xfc\x16\x38\x09\xfd\x6f" "\x27\xba\x6a\x11\xf1\xf2\xf0\xba\x6e\xfe\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x70\x3a\x4e\xe2\x7f\x21\x4e\x7b\x1f\x01\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x2f\xb6\xc5\xe9\xa8\x3e\x8e\x24\x66\x67\xae\xce\xa4\xeb\xdb\x5b" "\x73\xed\x74\x2a\xd2\xbd\x92\xd5\x88\xa8\x44\x44\xf2\xeb\x88\xe4\x1f" "\x11\x37\xa2\x33\xc5\x54\x5f\x73\xc9\x61\xfd\xbc\xb7\xbc\xf0\xe6\x27" "\x9f\x6f\x7f\xda\x6b\xab\x5a\x94\xaf\x44\x6c\x1e\x5a\x6f\x34\x9b\xf9" "\x14\xcd\x88\x18\xcb\x97\xc7\xd5\xde\xcd\xe1\xed\xd5\x7a\xc9\x89\x92" "\xec\xa4\x1b\x99\x34\x60\x57\x8a\xc0\xc1\x69\xfb\x5f\x00\x00\x00\xff" "\xff\xa8\xef\xe9\x11", 1773); syz_mount_image(/*fs=*/0x20000000, /*dir=*/0x20002380, /*flags=MS_REC|MS_MANDLOCK*/ 0x4040, /*opts=*/0x200023c0, /*chdir=*/3, /*size=*/0x6ed, /*img=*/0x20000900); break; case 1: memcpy((void*)0x20000840, "memory.events.local\000", 20); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000840ul, /*flags=*/0x275aul, /*mode=*/0ul); if (res != -1) r[0] = res; break; case 2: memcpy((void*)0x20003b40, "#! ", 3); *(uint8_t*)0x20003b43 = 0xa; syscall(__NR_write, /*fd=*/r[0], /*data=*/0x20003b40ul, /*len=*/0x208e24bul); break; case 3: syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0xb36000ul, /*prot=PROT_WRITE*/ 2ul, /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul, /*fd=*/r[0], /*offset=*/0ul); break; case 4: syscall(__NR_fdatasync, /*fd=*/r[0]); break; case 5: syscall(__NR_madvise, /*addr=*/0x20000000ul, /*len=*/0x600003ul, /*advice=MADV_PAGEOUT*/ 0x15ul); break; case 6: syscall(__NR_fcntl, /*fd=*/r[0], /*cmd=*/0x10ul, /*arg=*/0x20000140ul); break; case 7: memcpy((void*)0x20000040, ".\000", 2); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000040ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[1] = res; break; case 8: syscall(__NR_getdents64, /*fd=*/r[1], /*ent=*/0x20000140ul, /*count=*/0x32ul); 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); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }