// https://syzkaller.appspot.com/bug?id=e8bb9c78cf88b0dedb5445593d2f69dc3b984417 // 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 (;;) { 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; } } } void execute_one(void) { memcpy((void*)0x200001c0, "hfs\000", 4); memcpy((void*)0x200004c0, "./bus\000", 6); memcpy((void*)0x20002680, "\x63\x6f\x64\x65\x70\x61\x67\x65\x3d\x63\x70\x39\x33\x36\x2c\x64\x69" "\x72\x5f\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30" "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x34\x36\x32\x35\x2c\x64\x69" "\x72\x5f\x75\x6d\x61\x73\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30" "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x37\x2c\x74\x79" "\x70\x65\x3d\x95\xc1\x09\x9e\x2c\x66\x69\x6c\x65\x5f\x75\x6d\x61\x73" "\x6b\x3d\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30" "\x30\x30\x30\x30\x30\x30\x31\x2c\x00", 128); *(uint8_t*)0x20002700 = -1; *(uint16_t*)0x20002701 = -1; *(uint16_t*)0x20002703 = -1; memcpy((void*)0x20002705, "\xc2\x8b", 2); memcpy( (void*)0x20002707, "\x2c\x8a\xdb\xc4\x3e\xb4\x0c\x59\x3b\xd3\x48\x54\xc1\x39\xa6\xe0\xd6\x12" "\xcd\x79\xae\x3c\xfe\xb2\x06\x26\xdf\x8e\x2a\x39\xb6\xee\x3c\x01\x8d\xd3" "\xde\x3f\x26\xba\x80\x2c\x02\x58\xf3\x62\x55\x09\x65\x1a\xa9\xd7\xb4\xd5" "\xbb\x31\xd7\xdf\x49\x07\xd8\xb0\xe0\x73\x53\xd4\xdf\xfa\xdb\xf3\x19\x07" "\x3a\xee\x87\x8d\x16\x21\xad\x06\x3a\xfc\x28\x59\x53\x7d\xe4\x3c\x01\x38" "\xd2\x49\x32\x23\x7f\x7b\xfb\x67\xdb\xcd\x47\x6b\x96\x2c\xe4\x14\x70\xa6" "\x2e\x44\x18\x28\xca\x5e\x38\x24\x4e\x1e\xa9\x27\xee\xfd\xd0\x64\xa3\xd2" "\x49\x09\x64\x0a\x10\x70\x91\x8b\xbc\x92\xd0\x92\x06\x8b\xce\xab\xef\x33" "\x2d\x16\x40\x6e\x4c\x36\xec\xcb\xa5\x13\x43\xbe\x9a\x52\x75\x62\x4b\xec" "\x14\x3c\x58\xd5\xd5\x57\x60\xd8\x1f\xae\x5b\xe4\xb9\xa0\x7b\x9b\xa9\xe3" "\x6e\x67\x31\xea\xfc\xad\x11\x1a\xd2\x73\xd3\xab\x13\xe6\xa1\x15\xb7\x95" "\xd7\x8b\x2d\xd9\x16\xec\x39\x30\xcd\xfa\xf0\x68\xfc\xfd", 212); memcpy( (void*)0x20000200, "\x78\x9c\xec\xdd\xcf\x6a\x13\x51\x14\xc7\xf1\xdf\x9d\xa4\x6d\x6a\x4b\x9d" "\xfe\x91\x82\xcb\x6a\xc1\x95\xd8\xba\x11\x37\x8a\xf4\x21\x5c\x88\xa8\x4d" "\x84\x62\xa8\xa0\x15\xd4\x95\xb8\x16\x71\x27\xb8\x77\xe7\x5a\x7c\x01\x37" "\xae\xc4\x17\xd0\x95\x2b\x1f\x20\xbb\x91\x7b\x67\x92\x4c\xe2\xfc\x6b\x34" "\xb9\x4d\xfc\x7e\x20\x21\x3a\xf7\xdc\x39\xa7\x33\xc9\xdc\x13\x48\x22\x00" "\xff\xad\x1b\x7b\xdf\xdf\x5f\xfe\x69\x6f\x46\xaa\xa9\x26\xe9\xaa\x14\x48" "\x6a\x48\x75\x49\x67\xb4\xd9\x78\x72\x78\x74\x70\xd4\x6e\x35\x8b\x26\xaa" "\xb9\x08\x7b\x33\x8a\x23\xcd\x1f\x63\xf6\x0f\x5b\x59\xa1\x36\xce\x45\x24" "\x42\xfb\xaf\xba\x96\xd3\xff\x87\xf1\x88\xa2\x28\xfa\xe1\x3b\x09\x78\xe7" "\x9e\xfd\x19\x02\x69\x21\x79\x76\xba\xed\x8d\x89\x67\x36\x1e\x2f\x7c\x27" "\xe0\x99\xe9\xa8\xa3\xa7\x5a\xf1\x9d\x07\x00\xc0\xaf\xe4\xfa\x1f\x24\xd7" "\xf9\xe5\x64\xfd\x1e\x04\xd2\x76\x72\xd9\x9f\xa9\xeb\x7f\xc7\x77\x02\x9e" "\xa5\xae\xff\xae\xcb\x8a\x8c\x3d\xbe\xa7\xdd\xa6\x7e\xbf\xe7\x5a\x38\xbb" "\x3d\xe8\x76\x89\x05\x33\xe6\x6e\x99\x57\x7c\x66\x0d\x2c\x30\x4d\x59\x57" "\xe9\x72\x09\x16\xef\x1f\xb4\x5b\x17\xf7\x1f\xb6\x9b\x81\x5e\xea\x5a\x22" "\x35\x6c\xc3\xdd\x37\xe3\x53\xb7\xab\x24\xdb\xad\x82\x64\x33\x94\xd7\x9e" "\x67\xc9\xd5\x30\x67\x6b\xd8\xcd\xc9\x7f\x7d\x94\x3d\xbe\x3d\x7e\x2a\x3d" "\xe6\x8b\xf9\x6a\x6e\x9b\x50\xef\xd4\xec\xad\xff\xea\x91\xb1\x87\xc9\x1d" "\xa9\xd0\x1d\xa9\xb0\x17\x10\xe7\x7f\x29\x7f\x46\x57\x65\x18\x8f\xca\xa9" "\x72\xd5\xed\xe4\x6c\xb2\x07\x7d\xfa\x50\xa1\xca\x46\x76\x47\xa2\xee\x19" "\xb5\xaa\xc1\x37\x08\xc2\x6e\x9e\x6f\xe6\x0b\xa2\xd6\x86\xa2\xe2\xea\x76" "\xf2\xab\x73\x51\xeb\x99\x51\xbb\x25\x51\x1b\xc3\x51\xfd\xb3\x39\x3f\x72" "\x74\x39\x65\x0f\x31\xaf\xcd\x4d\xb3\xa5\x5f\xfa\xa8\xbd\xd4\xfa\x3f\xb0" "\x7f\xed\x6d\x55\x79\x66\xda\x31\x6e\x64\x72\x66\x14\xd6\x53\x77\x23\xc3" "\x0a\x89\x05\x95\xd2\x47\x55\x73\x85\x5b\x5f\xe9\x9e\xae\x68\xe5\xf1\xb3" "\xe7\x0f\xee\xb6\xdb\xad\x47\x53\xf1\xa0\x76\x32\xd2\x98\xf8\x83\xba\x26" "\xb1\xaf\xee\x09\x73\x22\x4a\x9e\xed\x07\xfa\xeb\x79\x6a\x5a\xd0\x58\x53" "\x2d\x7a\xf1\x58\xfc\x97\xaf\x53\xf0\xa8\x7f\xd0\xb5\x79\xcb\x77\x32\xf0" "\xc1\xae\xbb\x4c\xdc\xff\xa5\xfa\x95\xeb\x6e\x9b\xed\x93\x42\xb7\x4e\x9f" "\x53\xd6\x3a\x3d\x2a\x9b\x3c\x35\xe3\x4e\x4e\x6f\xb0\xe6\xee\x4f\x1d\xab" "\x83\x5b\xca\xef\xe0\xaa\xf6\x5c\xe7\x2e\x48\xe7\x0b\xf6\xf8\x79\x70\xda" "\x30\xc9\x73\x46\x98\x3d\x7d\xd3\x1d\xde\xff\x07\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x98\x36\xd5\x3e\x0f\xb0\x90\x8c\x1e\xed" "\xe3\x04\x9e\x4b\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x60\xea\x8d\xff\xf7\x7f\x53\xdf\xea\x5d\xfe\xfb\xbf\xee\x5b" "\xba\xf9\xfd\x5f\x60\x32\x7e\x07\x00\x00\xff\xff\x0b\xc8\x7b\x3c", 646); syz_mount_image( /*fs=*/0x200001c0, /*dir=*/0x200004c0, /*flags=MS_I_VERSION|MS_SYNCHRONOUS|MS_SILENT|MS_NOSUID|MS_NOEXEC|0x400*/ 0x80841a, /*opts=*/0x20002680, /*chdir=*/7, /*size=*/0x286, /*img=*/0x20000200); memcpy((void*)0x200000c0, "./file0\000", 8); syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000c0ul, /*mode=*/0ul); memcpy((void*)0x20000200, "./file0/../file0\000", 17); syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x20000200ul, /*type=*/0ul, /*flags=MS_SHARED|MS_SYNCHRONOUS|MS_RDONLY|MS_DIRSYNC|MS_BIND*/ 0x101091ul, /*data=*/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); loop(); return 0; }