// https://syzkaller.appspot.com/bug?id=7f0a5bdbdd9e24a6780456f16719826d6c92b45d // 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 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 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; const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; retry: 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")) { } } 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 (;;) { 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; } remove_dir(cwdbuf); } } void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x20000080, "ext4\000", 5); memcpy((void*)0x20000140, "./file1\000", 8); memcpy((void*)0x20000280, "errors=remount-ro", 17); *(uint8_t*)0x20000291 = 0x2c; memcpy((void*)0x20000292, "nodiscard", 9); *(uint8_t*)0x2000029b = 0x2c; memcpy((void*)0x2000029c, "noquota", 7); *(uint8_t*)0x200002a3 = 0x2c; memcpy((void*)0x200002a4, "init_itable", 11); *(uint8_t*)0x200002af = 0x2c; memcpy((void*)0x200002b0, "stripe", 6); *(uint8_t*)0x200002b6 = 0x3d; sprintf((char*)0x200002b7, "0x%016llx", (long long)0x79); *(uint8_t*)0x200002c9 = 0x2c; memcpy((void*)0x200002ca, "resgid", 6); *(uint8_t*)0x200002d0 = 0x3d; sprintf((char*)0x200002d1, "0x%016llx", (long long)0); *(uint8_t*)0x200002e3 = 0x2c; memcpy((void*)0x200002e4, "sysvgroups", 10); *(uint8_t*)0x200002ee = 0x2c; memcpy((void*)0x200002ef, "delalloc", 8); *(uint8_t*)0x200002f7 = 0x2c; memcpy((void*)0x200002f8, "errors=continue", 15); *(uint8_t*)0x20000307 = 0x2c; *(uint8_t*)0x20000308 = 0; memcpy( (void*)0x20000880, "\x78\x9c\xec\xdd\xcf\x6b\x1c\x6d\x1d\x00\xf0\xef\x4c\xb2\x6f\x7f\xe5\x35" "\xa9\x7a\xa8\x05\xdb\x62\x2b\x69\xd1\xee\x26\x8d\x6d\x83\x87\x5a\x41\xec" 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"\x8d\xff\xf1\x88\xf8\x4c\x76\xfd\x3f\x1e\x23\xd9\xd5\x29\x00\x00\x00\x70" "\x90\xb4\xbe\x34\x16\xff\x4a\x22\x5a\x00\x00\x00\xc0\x81\x95\x66\x73\x60" "\x93\xb4\x9c\xcf\x05\x18\x8b\x34\x2d\x97\x3b\x73\x78\x3f\x19\xc7\xd3\x5a" "\xbd\xd1\xfc\xdc\x62\x7d\x73\x6d\xa1\x33\x57\x76\x22\x4a\xe9\xe2\x72\xad" "\x3a\x95\xcf\x15\x9e\x88\x52\xd2\xde\x9e\xce\xe7\xd8\x76\xb7\xaf\xec\xda" "\x9e\x89\x88\x93\x11\xf1\x83\xf1\x63\xd9\x76\x79\xbe\x5e\x5b\x28\x7a\xf0" "\x03\x00\x00\x00\x0e\x89\x13\xbb\xfa\xff\xff\x18\xcf\xfa\xff\x47\x8a\xce" "\x0b\x00\x00\x00\x18\xb0\x89\xa2\x13\x00\x00\x00\x00\xde\x39\xfd\x7f\x00" "\x00\x00\x38\xf8\xf4\xff\x01\x00\x00\xe0\x40\xfb\xda\xed\xdb\xed\xa5\xd5" "\x7d\xfe\xf5\xc2\xfd\xad\xcd\x95\xfa\xfd\xcb\x0b\xd5\xc6\x4a\x79\x75\x73" "\xbe\x3c\x5f\xdf\x58\x2f\x2f\xd5\xeb\x4b\xd9\x6f\xf6\xad\xee\xf5\x79\xb5" "\x7a\x7d\xfd\x0b\xb1\xb6\xf9\xb0\xd2\xac\x36\x9a\x95\xc6\xd6\xf6\xbd\xd5" "\xfa\xe6\x5a\xf3\xde\xf2\x6b\x8f\xc0\x06\x00\x00\x00\x86\xe8\xe4\xd9\x27" "\xbf\x4b\x22\x62\xe7\x8b\xc7\xb2\xa5\xed\x83\xa2\x93\x02\x86\x22\xd9\xa3" "\x3e\x7b\x48\xc8\xb3\x7c\xe3\x0f\x43\x48\x08\x18\x9a\x91\xa2\x13\x00\x0a" "\x33\x5a\x74\x02\x40\x61\x4a\x45\x27\x00\x14\x6e\xaf\x71\x80\xbe\x93\x77" "\x7e\x3d\xf8\x5c\x00\x00\x80\x77\x63\xf2\x53\xfd\xef\xff\x1b\x1b\x80\x83" "\x2d\xed\x5b\xd3\x1a\x6a\x1e\x00\xc0\xf0\xb8\xff\x0f\x87\x57\xe9\xf5\x19" "\x80\x57\x8b\xcb\x04\x28\xca\xc7\xf6\xa8\x7f\x9b\xfb\xff\x9d\x91\x84\x96" "\x01\x05\x00\x00\x28\xd8\x58\xb6\x24\x69\x39\xbf\x17\x38\x16\x69\x5a\x2e" "\x47\x7c\x98\x3d\x16\xa0\x94\x2c\x2e\xd7\xaa\x53\x79\xff\xe0\xb7\xe3\xa5" "\x23\xed\xed\xe9\xec\x9d\xc9\x9e\x73\x86\x01\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x8e\x56\x2b\x89\x16\x00" "\x00\x00\x70\xa0\x45\xa4\x7f\x4a\xb2\x5f\xf3\x8f\x98\x1c\xbf\x30\xb6\x7b" "\x7c\xe0\x83\xe4\x9f\xe3\xd9\x3a\x22\x1e\xfc\xe4\xee\x8f\x1e\xce\x35\x9b" "\x1b\xd3\xed\xfd\x7f\x7b\xb9\xbf\xf9\xe3\x7c\xff\x95\x22\x46\x30\x00\x00" "\x00\x80\xdd\xba\xfd\xf4\x6e\x3f\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\xe9\xc5\xf3\x47\xf3\xdd\x65" "\x98\x71\xff\xf2\xe5\x88\x98\xe8\x19\xff\xec\xd1\x6c\x75\x34\x4a\x11\x71" "\xfc\xef\x49\x8c\xbe\xf2\xbe\x24\x22\x46\x06\x10\x7f\xe7\x71\x44\x9c\xea" "\x15\x3f\x69\xa7\x15\x13\xd1\xc9\xa2\x57\xfc\x63\x05\xc6\x4f\x23\xe2\xc4" "\x00\xe2\xc3\x61\xf6\xa4\x7d\xfc\xb9\xd9\xeb\xfb\x97\xc6\xb9\x6c\xdd\xfb" "\xfb\x37\x9a\x2f\x6f\xab\xff\xf1\x2f\x8d\xee\xf1\x6f\xa4\xcf\xf1\xe7\xc3" "\x7d\xc6\x38\xfd\xf4\x17\x95\xbe\xf1\x1f\x47\x9c\x1e\xed\x7d\xfc\xe9\xc6" "\x4f\xfa\xc4\x3f\xbf\xcf\xf8\xdf\xfc\xc6\xf6\x76\xbf\xba\xd6\x4f\x23\x26" "\x7b\x9e\x7f\x92\xd7\x62\x55\x9a\xab\xeb\x95\xc6\xd6\xf6\xe5\xe5\xd5\xb9" "\xa5\xea\x52\x75\x6d\x66\x66\xfa\xda\xec\xf5\xd9\xab\xb3\x53\x95\xc5\xe5" "\x5a\x35\xff\xb7\x67\x8c\xef\x7f\xfa\x97\xff\x79\x53\xfb\x8f\xf7\x89\x3f" "\xb1\x47\xfb\x2f\xec\xb3\xfd\xff\x7e\xfa\xf0\xf9\x27\x3a\xc5\x52\xaf\xf8" "\x17\xcf\xf7\x3e\xff\x9e\xea\x13\x3f\xcd\xcf\x7d\x9f\xcd\xcb\xed\xfa\xc9" "\x6e\x79\xa7\x53\x7e\xd5\x99\x9f\xff\xe6\xcc\x9b\xda\xbf\xd0\xa7\xfd\x2f" "\xff\xfe\x3d\x4e\xb4\xed\x98\x17\xf7\xd9\xfe\x4b\x77\xbe\xf3\x6c\x9f\x2f" "\x05\x00\x86\xa0\xb1\xb5\xbd\x32\x57\xab\x55\x37\x3e\x8a\x85\x34\xde\x8b" "\x34\x14\x06\x52\x38\xf2\x7e\xa4\xa1\xd0\x29\x14\x7d\x64\x02\x00\x00\x06" "\xed\x7f\x17\xfd\x45\x67\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x87\xd7\x30\x7e\x4e\x6c\x77\xcc\x9d\x62\x9a\x0a\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x46\xff\x0d\x00\x00\xff\xff\x0e\x1a\xdb\x78", 1238); syz_mount_image(/*fs=*/0x20000080, /*dir=*/0x20000140, /*flags=MS_LAZYTIME|MS_MANDLOCK*/ 0x2000040, /*opts=*/0x20000280, /*chdir=*/0x10, /*size=*/0x4d6, /*img=*/0x20000880); memcpy((void*)0x20000240, "./file0\000", 8); memcpy((void*)0x200000c0, "./file0\000", 8); memcpy((void*)0x20000140, "incremental-fs\000", 15); syscall(__NR_mount, /*src=*/0x20000240ul, /*dst=*/0x200000c0ul, /*type=*/0x20000140ul, /*flags=*/0ul, /*opts=*/0ul); memcpy((void*)0x20000580, "./file2\000", 8); syscall(__NR_open, /*file=*/0x20000580ul, /*flags=O_TRUNC|O_SYNC|O_NOATIME|O_LARGEFILE|O_CREAT|O_RDWR|0x3c*/ 0x14927eul, /*mode=*/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; use_temporary_dir(); loop(); return 0; }