// https://syzkaller.appspot.com/bug?id=87c8d5668f72a072628aab3885cea6b573a51792 // 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 #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 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"); } 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; } } } void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x20000080, "hfs\000", 4); memcpy((void*)0x20000200, "./file0\000", 8); *(uint16_t*)0x20001040 = 0; memcpy( (void*)0x20001042, "\xe2\x9d\x7a\x1a\x36\x53\xbe\xa2\x95\x54\xe2\x50\x92\xa1\x63\x32\x20\x5b" "\xf7\xf9\x25\x51\xd0\x54\xbb\x32\xdc\x6e\xe5\x2c\x2f\xf3\x8a\x4a\xa6\x12" "\x62\xfe\x2d\xef\x8d\xd6\x10\x1a\xc5\x42\x6c\x31\x03\x52\x7e\xaa\x34\x1e" "\x92\xde\x85\x17\x3c\x77\xb9\x9c\xc6\x01\x13\x38\xfc\xfd\x63\x03\x97\xd1" "\x37\x92\x5a\x2b\xcb\x88\xf1\x80\x76\x8c\x49\x1e\x27\xd9\xe4\x27\xe6\x27" "\x3b\xbd\x72\x3c\x88\x03\x2a\xb1\xd2\x56\xcd\x4c\x7a\x7d\xbb\x40\x13\x47" "\xc3\xfd\x5f\x46\x1b\xfc\xbb\xc6\x0f\x43\x03\x8b\x11\x10\xd8\x7e\x1e\xa8" "\xd3\x1b\x5c\xfe\x1d\xbf\x2b\xb9\x93\xc9\x89\x92\x6d\x72\xfe\xfc\xdd\x24" 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"\x15\xc8\x4f\xa5\x8e\x94\x16\x9e\xf5\x25\x4d\x13\x14\x6d\xbb\x5e\x9e\x38" "\x41\x63\x6f\xdc\x29\xf5\x1f\xc3\xca\xa0\xb5\xfb\x1b\x50\xde\xb4\x68\x90" "\x72\x02\x3c\x27\x39\x0c\x48\xcf\x35\x8d\xab\x2f\xa4\xbd\x39\x4b\x84\x51" "\xae\xe7\x8b\x5e\xda\xd0\x44\xa7\xeb\x85\xa4\xc6\x8b\x6c\xbb\x56\x93\x5e" "\x1a\x80\x84\x4a\xe6\x3d\x70\x87\x2c\xff\x2f\xb0\x3b\x1e\x63\xfa\xdd\x8f" "\x90\xa1\xe2\xbb\x07\x95\x7d\xf1\xc7\xe4\xee\xac\xe0\x87\xe2\x20\xfc\xcb" "\xdb\x83\x20\x8f\x2c\x71\x66\xe8\x6d\x3c\x20\x5a\xa4\x29\xa8\xc6\xed\x63" "\xd2\x60\x0b\x55\x21\x50\x5f\x79\xde\xd8\xcc\x92\x21\xa2\xdf\xdb\x5d\x95" "\x63\x8c\x18\xa3\x7b\xf8\xc7\x7c\x8b\xe3\x7d\xee\xb7\x84\x93\x54\xca\xbf" "\x3c\xb8\x80\x92\x47\x20\xbb\x8b\x99\x01\xf5\x24\x21\x59\xbc\x30\xc9\xba" "\x3c\x44\x39\x6e\x13\xcb\xa4\x15\x8a\xc9\x19\x2b\xfb\xe9\x10\x95\x7f\x91" "\x91\xab\xdc\x68\xfc\xf1\x25\xb9\x04\x51\x20\x6b\x61\x3e\x67\xbb\x1e\xa4" "\x2e\x41\xf7\xb7\x70\x47\x98\x1b\x95\x57\x6a\xeb\xf8\x94\x87\x38\x69\xd6" "\x50\xb1\x9d\x52\xb3\x2f\x73\x38\x08\x84\x7d\xcc\x24\xe8\xf0\xcd\x5a\x7a" "\x20\xa0\x35\xdd\xf6\xfe\xb8\xb3\x9d\xae\xc1\x85\x3b\x7a\xb5\xbf\x83\x3d" "\xec\x33\xd8\xa1\xa8\xd0\x52\x3f\xfd\x0e\xfd\x86\xaf\x21\x09\xcd\x75\xe9" "\x0a\xf4\xfb\x52\x1d\x34\xd3\x7d\xd6\xa1\xb1\xc5\x65\x1d\x61\xfd\xbd\x2a" "\x6c\x37\x7c\xb2\xbe\x03\x02\x24\xb0\x14\x01\x76\xe2\xd2\xdd\xdc\xe2\xad" "\xee\x5c\x31\x3b\xae\xde\xba\xf1\xec\xc9\xa1\xe5\x47\x62\x07\x57\x59\x38" "\xdb\x96\x99\xbc\x08\xf0\xf0\xf8\x17\x22\x12\x23\xfa\x39\xe8\x7f\x4d\x5f" "\x07\xf6\xfe\xeb\xcb\xf0\x3f\x62\xc1\xb5\x85\x6d\x86\xa6\x1c\x1d\xb7\x0c" "\x33\xec\x9a\xcb\x88\x6a\xd1\xbc\xc4\xb8\x18\x77\x58\x42\x90\x2c\xe2\x92" "\xbd\x63\x0f\xf9\xd0\x1b\xb8\x3a\x80\xa2\xa9\xe8\xe4\x45\x41\x94\x30\x49" "\x34\x2e\x8f\x77\xc4\xa8\xac\xdb\xc9\x1c", 4096); memcpy( (void*)0x20000780, "\x78\x9c\xec\xdd\xcf\x6b\x13\x4b\x00\x07\xf0\xef\x6c\x36\xbf\x5e\x4b\xdf" "\xbe\xb6\x8f\xc2\x3b\xf6\x59\xf0\x20\xa5\xad\x17\xf1\x62\x91\x22\x82\xff" "\x80\x07\x29\xd6\x36\x85\xd2\xb5\x82\xad\x60\x0b\x62\xea\x59\xc4\x9b\x20" "\x78\xf4\xe6\x59\xf4\x5f\xd0\x8b\xff\x81\x82\xd0\x83\x78\xd2\x4b\xf1\xe0" "\xca\xcc\xce\xec\xaf\xce\x6e\x36\x69\xda\xb4\xf4\xfb\x81\xc6\xcd\xec\xfc" "\xcc\xec\xec\xce\x24\x26\x0b\x22\x3a\xb3\xae\x2e\x7c\x7e\x7d\x71\x4f\xfe" "\x89\x2a\x80\x0a\x80\xcb\x80\x03\xec\x02\x70\x01\xfc\x8b\x89\xc6\x83\x8d" "\xad\xb5\x2d\xbf\xb5\x52\x94\x51\x05\x68\x40\xfd\x09\x9d\x52\x1c\x88\xb3" "\xbc\xd1\xb2\x25\x95\xe9\x54\x0a\xcd\x93\xcf\x5c\x0c\x27\xc3\xe8\x68\x04" "\x41\x10\x7c\xe9\x18\xeb\xc7\xb1\xd4\x85\x06\x47\x84\x63\xff\x00\x07\xa8" "\xeb\xd1\xa9\xf6\x37\xa2\x3d\xb5\x63\xac\x5d\xff\xb5\xc3\x76\x9d\x2d\x89" "\x1e\x16\xfb\xd8\xc7\x43\x8c\x0c\xb2\x3a\x44\x44\x34\x78\xfa\xfa\xef\xe8" "\xab\xc4\xb0\x9e\xbf\x3b\x0e\x30\xa5\xe7\xe1\x99\xeb\xff\xa9\x93\x9a\xdf" "\xec\x0f\xae\x1e\x27\x42\x74\xfd\x77\xc2\xe7\x81\x90\xaf\xcf\xdf\x6a\x57" "\xbc\xde\x53\x4b\x38\xd9\xfb\x8e\x59\x25\xda\xf2\xb2\x1e\x13\x41\xfc\x72" "\xab\x99\xa2\x93\xe9\x00\xd1\x69\x55\xa9\xea\xe2\x34\x57\xd7\xfc\xd6\x74" "\x5b\x65\xf0\x04\x57\xb4\x44\xb4\x71\xf5\xb8\x02\xd3\x10\x25\xaf\xb6\x7a" "\xce\x3a\x69\x59\x9b\x16\x28\x6a\x7b\xb1\x21\xd5\x86\xaa\x6c\xc3\x5c\x4e" "\xfd\xc7\xba\x2e\xf1\xfd\x37\xbc\xb0\x17\xb7\xf8\xb1\x44\x9d\xc4\x07\xf1" "\x49\x2c\x0a\x0f\x2f\xb1\x12\xcd\xff\xdc\x40\xa0\x86\xaa\xda\xf6\x32\x3d" "\x15\xd6\x7f\x26\x3f\x47\xd5\x4a\x2f\x8c\x95\x6a\x65\xbc\x7e\xff\x47\x15" "\xf2\x9f\xe9\x81\x77\x6f\xe2\x56\x36\xf3\x5e\xd7\x06\x2a\xb2\x2e\x36\x32" "\x17\x91\x9d\xbf\x7b\xa6\x9e\xcf\x73\x96\x26\x2a\x78\x14\xe9\xb7\x15\xc2" "\xd6\xcd\xe6\xb7\x4e\xa5\x1a\xb3\xa6\x9a\x8b\x9e\xff\xb2\xa6\x1a\xcf\xa6" "\x6a\xae\x56\xfd\xd6\xf4\xf2\x3d\xbf\xf0\xad\x94\xbe\xb1\xae\xe8\xc4\x33" "\x71\x53\x4c\xe2\x3b\xde\x62\x21\x31\xff\x77\x64\xec\x29\x1c\x1c\x99\xa2" "\x1d\x46\x48\x8d\x72\xa1\x62\xea\x23\xa3\xb0\x3d\xae\x8a\x99\xd3\x8f\x29" "\x6a\x00\xdf\xed\x6a\x64\x92\x72\xcd\xda\xd1\x36\xd7\xbf\x9a\xad\xa7\xb8" "\x83\x4b\x18\xd9\xdc\xde\x59\x5f\xf2\xfd\xd6\xfd\x52\x1b\x2e\xba\x88\xdc" "\xed\x86\x19\x2a\x71\x48\x70\x64\x65\x95\xd8\x08\x0f\x44\x7d\x38\xca\x10" "\xf9\x6f\x22\x0e\x1a\x72\x43\x9e\x32\xfb\x56\xe8\xef\x20\xb0\x37\xd9\xc5" "\xf6\x8e\x83\xa3\x6e\x72\x78\xfa\xaf\xbf\x8a\x9b\xbc\xb3\xbe\x64\x86\xff" "\xe1\x8a\x40\x3b\xca\xd0\xec\x9a\xcf\x8f\x0c\x60\x1e\x80\x0e\x31\x67\x84" "\x5e\x4a\x7f\x1c\xa5\xaa\xc7\x19\x96\x4a\xfe\x53\xf6\xb6\x0a\xb1\x1f\xf3" "\xe9\xf3\x54\xdf\xfb\x62\x37\x11\x62\x8a\x4a\xc5\xa9\xa0\x5e\x6a\x30\x36" "\x7b\x28\xfd\xc6\xa3\xf5\x25\xbf\x97\x13\x11\x9d\x36\x71\xa7\x63\xe2\xd6" "\xa0\x2b\x43\x83\x20\xe7\x5d\x22\x5c\xff\x25\xd6\x2b\x33\xea\xac\x23\x1f" "\xbc\x82\xd5\x48\xd0\x29\xf3\x44\x8e\xb3\x39\x2b\xa0\x51\xf5\xf8\x57\xb9" "\x15\x5c\x94\x6d\xee\x3c\x71\xc8\x6c\x74\x58\x73\xfd\x7f\x1e\x38\x97\x29" "\xd1\x81\x29\x71\x37\x9b\xad\xa7\xeb\x89\x93\xf8\xa9\x64\xf7\x1f\x65\x08" "\xa0\x8d\xdb\x7c\xff\x9f\x88\x88\x88\x88\x88\x88\x88\x88\x88\x88\x88\x88" "\x88\x88\x88\x88\x88\x88\x88\xe8\xb4\xd9\xdc\x76\xbb\xfa\x7e\x42\xd9\xaf" "\x13\x5c\xa8\x25\xfe\x67\x79\xca\xde\x19\xfc\xe1\x0d\x22\x22\x22\x22\x22" "\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\x22\xa2" "\xc3\x49\xdc\xff\x17\xa8\xa8\x3b\xc6\xd4\xc2\x5f\xe2\x6e\x1c\xff\xfd\x7f" "\xf5\x6f\x74\x7b\x95\x12\xf7\xff\x35\xf7\xa5\x20\xa2\x9e\xfd\x09\x00\x00" "\xff\xff\x9f\x1a\x5d\x7a", 834); syz_mount_image( /*fs=*/0x20000080, /*dir=*/0x20000200, /*flags=MS_I_VERSION|MS_POSIXACL|MS_STRICTATIME|MS_RELATIME|MS_NOSUID|0x84*/ 0x1a10086, /*opts=*/0x20001040, /*chdir=*/0, /*size=*/0x342, /*img=*/0x20000780); memcpy((void*)0x20000380, "./file0\000", 8); syscall(__NR_chdir, /*dir=*/0x20000380ul); memcpy((void*)0x20000c40, "./file1\000", 8); syscall(__NR_unlinkat, /*fd=*/0xffffff9c, /*path=*/0x20000c40ul, /*flags=*/0ul); } 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; }