// https://syzkaller.appspot.com/bug?id=5ee890593807992a923f480966c3d8a237d60685 // 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 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; } 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"); } 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++) { reset_loop(); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { 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; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x200000c0, "exfat\000", 6); memcpy((void*)0x20001540, "./file0\000", 8); memcpy((void*)0x200004c0, "utf8", 4); *(uint8_t*)0x200004c4 = 0x2c; memcpy((void*)0x200004c5, "discard", 7); *(uint8_t*)0x200004cc = 0x2c; memcpy((void*)0x200004cd, "dmask", 5); *(uint8_t*)0x200004d2 = 0x3d; sprintf((char*)0x200004d3, "%023llo", (long long)7); *(uint8_t*)0x200004ea = 0x2c; memcpy((void*)0x200004eb, "uid", 3); *(uint8_t*)0x200004ee = 0x3d; sprintf((char*)0x200004ef, "0x%016llx", (long long)0); *(uint8_t*)0x20000501 = 0x2c; memcpy((void*)0x20000502, "utf8", 4); *(uint8_t*)0x20000506 = 0x2c; memcpy((void*)0x20000507, "iocharset", 9); *(uint8_t*)0x20000510 = 0x3d; memcpy((void*)0x20000511, "maccroatian", 11); *(uint8_t*)0x2000051c = 0x2c; memcpy((void*)0x2000051d, "namecase=1", 10); *(uint8_t*)0x20000527 = 0x2c; memcpy((void*)0x20000528, "allow_utime", 11); *(uint8_t*)0x20000533 = 0x3d; sprintf((char*)0x20000534, "%023llo", (long long)7); *(uint8_t*)0x2000054b = 0x2c; memcpy((void*)0x2000054c, "umask", 5); *(uint8_t*)0x20000551 = 0x3d; sprintf((char*)0x20000552, "%023llo", (long long)0x96); *(uint8_t*)0x20000569 = 0x2c; *(uint8_t*)0x2000056a = 0; memcpy( (void*)0x20001580, "\x78\x9c\xec\xdc\x7b\x98\x8e\x55\xdb\x30\xf0\x75\xae\xb5\x2e\xc6\x34" "\xe9\x6e\x92\xcd\xb0\xce\x75\x5e\xdc\x69\xb0\x4c\x92\x64\x93\x90\x4d" "\x92\x24\x49\x92\x5d\x42\xd2\x24\x49\x42\x62\xc8\x2e\x69\x48\x42\xb6" "\x93\x64\x33\x84\x64\x33\x8d\x49\x63\xbf\xdf\x64\x9f\x34\x79\xa4\x49" "\x92\x90\xec\xc2\xfa\x0e\x3d\xcf\xf7\x7a\x9e\xb7\xe7\x7d\xfb\xde\xef" "\xe9\xfb\x1c\xef\x3b\xe7\xef\x38\xd6\x71\xaf\x73\xae\xfb\x3c\xef\xb5" 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"\x57\x5d\x56\x97\x35\x64\x27\x57\x53\xd6\x92\xb5\x65\x6d\x59\x47\xd6" "\x95\xf5\x64\x7d\x59\x5f\x36\x90\x0d\x64\x43\xd9\x50\x36\x92\x8d\x64" "\x63\xd9\x58\x36\x91\x0f\xcb\xa6\x72\x00\x0c\x81\x47\xe5\x95\xce\xb4" "\x90\x23\xa1\xa5\x1c\x05\xad\x64\x6b\xd9\x46\xb6\x95\x6f\xc3\x93\xb2" "\xbd\x1c\x03\x1d\x64\x47\xd9\x49\x3e\x2d\xc7\xc1\x58\xe8\x22\xdb\xbb" "\x64\xf9\x9c\xec\x2a\x27\x41\x37\xf9\x82\x9c\x0c\x2f\xca\x1e\x72\x2a" "\xf4\x94\x2f\xcb\x5e\xb2\xb7\xec\x23\x5f\x91\x7d\x65\x07\xd7\x4f\xf6" "\x97\x33\x60\x80\x1c\x28\x67\xc3\x20\x39\x58\x0e\x91\x43\xe5\x3c\xa8" "\x2b\xaf\x74\xac\x9e\x7c\x53\xa6\xca\x91\x72\x94\x7c\x4b\x2e\x85\xb7" "\xe5\x18\xf9\x8e\x1c\x2b\xc7\xc9\xf1\xf2\x5d\x39\x41\x4e\x94\x93\xe4" "\x64\x39\x45\x4e\x95\x69\xf2\x3d\x39\x4d\xbe\x2f\xa7\xcb\x0f\xe4\x0c" "\x39\x53\xce\x92\xb3\x65\xba\x9c\x23\xe7\xca\x0f\xe5\x3c\x39\x5f\x2e" "\x90\x1f\xc9\x85\xf2\x63\xb9\x48\x2e\x96\x4b\xe4\x52\x99\x21\x3f\x91" "\x99\x72\x99\xcc\x92\x9f\xca\xe5\xf2\x33\x99\x2d\x57\xc8\x95\x72\x95" 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"\xc3\xdc\x30\x37\xdc\x0d\x77\x23\xdc\x08\x97\xea\x52\xdd\x28\x37\xca" "\x8d\x76\xa3\xdd\x18\x37\xc6\x8d\x75\x63\xdd\x78\x37\xde\x4d\x70\x13" "\xdc\x24\x37\xc9\x4d\x71\x53\x5c\x9a\x4b\x73\xd3\xdc\x34\x37\xdd\x4d" "\x77\x33\xdc\x0c\x37\xcb\xcd\x72\xe9\x2e\xdd\xcd\x75\x73\xdd\x3c\x37" "\xcf\x2d\x70\x0b\xdc\xc2\xc4\x85\x6e\x91\x5b\xe4\x96\xb8\x25\x2e\xc3" "\x65\xb8\x4c\x97\xe9\xb2\x5c\x96\x5b\xee\x96\xbb\x6c\x97\xed\x56\xba" "\x95\x6e\xb5\x5b\xed\xd6\xba\xb5\x6e\xbd\x5b\xef\x36\xba\x8d\x6e\xb3" "\xdb\xec\xb6\xba\xad\x6e\xbb\xdb\xee\x76\xb8\x1d\x6e\x97\xdb\xe5\xf6" "\xb8\x3d\x6e\x9f\xdb\xe7\xf6\xbb\xfd\xee\x80\x3b\xe0\x72\x5c\x8e\x3b" "\xe8\x0e\xba\x43\xee\x90\x3b\xec\xbe\x75\xb9\xee\x3b\x77\xc4\x7d\xef" "\x8e\xba\x1f\xdc\x31\xf7\xa3\x3b\xee\x7e\x72\x27\xdc\x49\x77\xca\xfd" "\xec\x4e\xbb\x5f\xdc\x19\x77\xd6\x9d\x73\xe7\xdd\x05\xf7\xab\xbb\xe8" "\x2e\xb9\xcb\xce\xbb\xb4\xc8\x7b\x91\x69\x91\xf7\x23\xd3\x23\x1f\x44" "\x66\x44\x66\x46\x66\x45\x66\x47\xd2\x23\x73\x22\x73\x23\x1f\x46\xe6" "\x45\xe6\x47\x16\x44\x3e\x8a\x2c\x8c\x7c\x1c\x59\x14\x59\x1c\x59\x12" "\x59\x1a\xc9\x88\x7c\x12\xc9\x8c\x2c\x8b\x64\x45\x3e\x8d\x2c\x8f\x7c" "\x16\xc9\x8e\xac\x88\xac\x8c\xac\x8a\xac\x8e\xac\x89\x78\x5f\x7c\x47" "\xe8\x4b\xfa\x52\x3e\xea\x6f\xf1\xa5\xfd\xad\x3e\xd1\x97\xf1\x65\x7d" "\x39\xef\x7c\x79\x9f\xe4\x6f\xf3\x15\xfc\xed\xbe\xa2\xbf\xc3\x57\xf2" "\x77\xfa\xca\xfe\x2e\x5f\xc5\x57\xf5\xd5\xfc\x13\xbe\x95\x6f\xed\xdb" "\xf8\xb6\xbe\x9d\x7f\xd2\xb7\xf7\x4f\xf9\x0e\xbe\xa3\xef\xe4\x9f\xf6" "\x9d\xfd\x33\xbe\x8b\x7f\xd6\x27\xfb\xe7\x7c\x57\xff\xbc\xef\xe6\x5f" "\xf0\xdd\xfd\x8b\xbe\x87\x7f\xc9\xf7\xf4\x2f\xfb\x5e\xbe\xb7\xef\xe3" "\x5f\xf1\x7d\xfd\xab\xbe\x9f\xef\xef\x53\xfc\x00\x3f\xd0\xbf\xe6\x07" "\xf9\xc1\x7e\x88\x1f\xea\x87\xf9\xd7\xfd\x70\xff\x86\x1f\xe1\xdf\xf4" "\xa9\x7e\xa4\x1f\xe5\xdf\xf2\xa3\xfd\xdb\x7e\x8c\x7f\xc7\x8f\xf5\xe3" "\xfc\x78\xff\xae\x9f\xe0\x27\xfa\x49\x7e\xb2\x9f\xe2\xa7\xfa\x34\xff" "\x9e\x9f\xe6\xdf\xf7\xd3\xfd\x07\x7e\x86\x9f\xe9\x67\xf9\xd9\x3e\xdd" "\xcf\xf1\x73\xfd\x87\x7e\x9e\x9f\xef\x17\xf8\x8f\xfc\x42\xff\xb1\x5f" "\xe4\x17\xfb\x25\x7e\xa9\xcf\xf0\x9f\xf8\x4c\xbf\xcc\x67\xf9\x4f\xfd" "\x72\xff\x99\xcf\xf6\x2b\xfc\x4a\xbf\xca\xaf\xf6\x6b\xfc\x5a\xbf\xce" "\xaf\xf7\x1b\xfc\x46\xbf\xc9\x6f\xf6\x5b\xfc\x56\xbf\xcd\x6f\xf7\x9f" "\xfb\x1d\x7e\xa7\xdf\xe5\x77\xfb\x3d\x7e\xaf\xdf\xe7\xbf\xf0\xfb\xfd" "\x97\xfe\x80\xff\xca\xe7\xf8\xaf\xfd\x41\xff\x17\x7f\xc8\x7f\xe3\x0f" "\xfb\x6f\x7d\xae\xff\xce\x1f\xf1\xdf\xfb\xa3\xfe\x07\x7f\xcc\xff\xe8" "\x8f\xfb\x9f\xfc\x09\x7f\xd2\x9f\xf2\x3f\xfb\xd3\xfe\x17\x7f\xc6\x9f" "\xf5\xe7\xfc\x79\x7f\xc1\xff\xea\x2f\xfa\x4b\xfe\xb2\xf7\xfe\x5a\x3f" "\x49\x67\x8c\x31\xc6\x18\xfb\xef\x40\xfd\xc1\xf1\x01\xff\xe4\x67\xf2" "\x6f\xe3\x8a\x81\x42\x88\xeb\x77\x16\xcb\xfd\xf7\x35\x37\x17\xfe\xeb" "\x7c\xb0\x4c\xe8\x1c\x11\x42\x3c\xd7\xbf\xe7\xa3\xff\x7b\xd4\xa9\x93" "\x92\x92\xf2\xb7\xf7\x66\x2b\x11\x94\x5a\x2c\x84\x88\x5c\xcd\xcf\x27" "\xae\xc6\x2b\x44\x27\xf1\x8c\x48\x16\x1d\x45\x85\x7f\xba\xbe\xc1\xb2" "\xf7\x05\xfa\x83\xfa\xd1\x3b\x85\x88\xfd\xbb\x9c\x18\x71\x35\xbe\x5a" "\xff\xf6\xff\xa0\xfe\x93\x4f\x8f\xcf\xac\x1c\x9e\x8b\xff\x4f\xea\x2f" "\x16\x22\xb1\xd4\xd5\x9c\x02\xe2\x6a\x7c\xb5\x7e\xc5\xff\xa0\x7e\x91" "\xf6\x7f\xb0\xfe\x02\xdf\xa4\x09\xd1\xe1\xef\x72\xe2\xc4\xd5\xf8\x6a" "\xfd\x24\xf1\x94\x78\x5e\x24\xff\xc3\x3b\x19\x63\x8c\x31\xc6\x18\x63" "\x8c\xb1\xbf\x1a\x2c\xab\x75\xff\xa3\xfb\xe7\x2b\xf7\xe7\x09\xfa\x6a" "\x4e\x7e\x71\x35\xfe\xa3\xfb\x73\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c" "\x5d\x7b\x2f\xf6\xee\xf3\xec\x93\xc9\xc9\x1d\xbb\xf3\x84\x27\x3c\xe1" "\xc9\xbf\x4d\xae\xf5\x7f\x26\xc6\x18\x63\x8c\x31\xc6\xd8\x9f\xed\xea" "\x45\xff\xb5\x5e\x09\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c" "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6" "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\x96\x77\xfd\xff\xf8\x3a\xb1\x6b" "\xbd\x47\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31" "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18" "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\xec" "\x5a\xfb\x5f\x01\x00\x00\xff\xff\x62\xb4\x38\x3c", 5367); syz_mount_image( /*fs=*/0x200000c0, /*dir=*/0x20001540, /*flags=MS_NOEXEC|MS_NODEV|MS_MANDLOCK|0x20000000*/ 0x2000004c, /*opts=*/0x200004c0, /*chdir=*/1, /*size=*/0x14f7, /*img=*/0x20001580); break; case 1: memcpy((void*)0x20000340, ".\000", 2); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000340ul, /*flags=*/0, /*mode=*/0); if (res != -1) r[0] = res; break; case 2: syscall(__NR_getdents64, /*fd=*/r[0], /*ent=*/0x20000f80ul, /*count=*/0x1000ul); break; case 3: memcpy((void*)0x20000180, "./file1\000", 8); syscall(__NR_unlink, /*path=*/0x20000180ul); 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; loop(); return 0; }