// https://syzkaller.appspot.com/bug?id=7f7ef738ef874395fd4ed352ab45d26cb6bcd0cf // 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; retry: const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; 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 (;;) { 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; } remove_dir(cwdbuf); } } void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x200000c0, "exfat\000", 6); memcpy((void*)0x20001540, "./file1\000", 8); memcpy((void*)0x20000100, "errors=remount-ro", 17); *(uint8_t*)0x20000111 = 0x2c; memcpy((void*)0x20000112, "discard", 7); *(uint8_t*)0x20000119 = 0x2c; memcpy((void*)0x2000011a, "errors=continue", 15); *(uint8_t*)0x20000129 = 0x2c; memcpy((void*)0x2000012a, "uid", 3); *(uint8_t*)0x2000012d = 0x3d; sprintf((char*)0x2000012e, "0x%016llx", (long long)0); *(uint8_t*)0x20000140 = 0x2c; memcpy((void*)0x20000141, "dmask", 5); *(uint8_t*)0x20000146 = 0x3d; sprintf((char*)0x20000147, "%023llo", (long long)0); *(uint8_t*)0x2000015e = 0x2c; memcpy((void*)0x2000015f, "iocharset", 9); *(uint8_t*)0x20000168 = 0x3d; memcpy((void*)0x20000169, "cp865", 5); *(uint8_t*)0x2000016e = 0x2c; memcpy((void*)0x2000016f, "gid", 3); *(uint8_t*)0x20000172 = 0x3d; sprintf((char*)0x20000173, "0x%016llx", (long long)0); *(uint8_t*)0x20000185 = 0x2c; memcpy((void*)0x20000186, "allow_utime", 11); *(uint8_t*)0x20000191 = 0x3d; sprintf((char*)0x20000192, "%023llo", (long long)7); *(uint8_t*)0x200001a9 = 0x2c; memcpy((void*)0x200001aa, "dmask", 5); *(uint8_t*)0x200001af = 0x3d; sprintf((char*)0x200001b0, "%023llo", (long long)5); *(uint8_t*)0x200001c7 = 0x2c; *(uint8_t*)0x200001c8 = 0; memcpy( (void*)0x20002a80, "\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\x90\x64" "\x7d\xc7\xf4\x3c\xdf\xeb\x79\xde\x9e\xf7\xed\x7d\xbe\xe7\xf9\x3e\xc7\xf7" "\xcc\xf9\x3b\x8e\x75\xdc\xeb\x9c\xeb\x3a\xcf\x7b\xad\x39\xe7\x98\xfb\xba" "\xae\x3f\xee\xef\x7a\x8f\x69\xd0\xaa\x61\xdd\x16\x44\x24\xfe\x29\xf0\xe7" "\x97\x14\x21\x44\x8c\x10\x62\x84\x10\xe2\x3a\x21\x44\x20\x84\xa8\x12\x5f" "\x25\x3e\xef\x78\x21\x05\x29\xff\xdc\x9b\xb0\x7f\xad\x87\xd3\xaf\xf6\x0a" "\xd8\xd5\xc4\xfd\xcf\xdf\xb8\xff\xf9\x1b\xf7\x3f\x7f\xe3\xfe\xe7\x6f\xdc" "\xff\xfc\x8d\xfb\x9f\xbf\x71\xff\xf3\x37\xee\x3f\x63\xf9\xd9\xce\x79\x25" "\xae\xe7\x91\x7f\x07\x3f\xff\xcf\xcf\xf8\xf3\xff\xdf\x48\x6e\xc5\xa9\x5f" "\x6d\xae\x78\x63\x9f\x7f\x20\x85\xfb\x9f\xbf\x71\xff\xf3\x37\xee\xff\xbf" "\x2b\xf8\x1f\x9d\xc5\xfd\xcf\xdf\xb8\xff\xf9\x1b\xf7\xff\xdf\x5f\x9d\xff" "\xe6\x18\xf7\x3f\x7f\xe3\xfe\x33\x96\x9f\x5d\xed\xe7\xcf\x3c\xae\xee\xb8" "\xda\x7f\x7f\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\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\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\xf2\x87\x0b\xfe\x0a\x2d\x84\xc8\x7b\x0d\xae\xf6\xa2" "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xf6\x2f\xe5\x0b\x5e\xed\x15\x30\xc6" 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"\xd0\x49\x76\x96\x5d\xe4\x93\x72\x02\x8c\x87\x6e\xb2\xa3\x4b\x96\xcf\xc8" "\xee\x72\x0a\xf4\x90\xcf\xc9\xa9\xf0\xbc\xec\x25\xa7\x43\x6f\xf9\xa2\xec" "\x23\xfb\xca\x7e\xf2\x25\xd9\x5f\x76\x72\x03\xe4\x40\x39\x0b\x06\xc9\xc1" "\x72\x2e\x0c\x91\x43\xe5\x30\x39\x5c\x2e\x80\xfa\x32\xaf\x63\x0d\xe4\xeb" "\x32\x55\x8e\x96\x63\xe4\x1b\x72\x39\xbc\x29\xc7\xc9\xb7\xe4\x78\x39\x41" "\x4e\x94\x6f\xcb\x49\x72\xb2\x9c\x22\xa7\xca\x69\x72\xba\x4c\x93\xef\xc8" "\x19\xf2\x5d\x39\x53\xbe\x27\x67\xc9\xd9\x72\x8e\x9c\x2b\xd3\xe5\x3c\x39" "\x5f\xbe\x2f\x17\xc8\x85\x72\x91\xfc\x40\x2e\x96\x1f\xca\x25\x72\xa9\x5c" "\x26\x97\xcb\x0c\xf9\x91\xcc\x94\x2b\x64\x96\xfc\x58\xae\x94\x9f\xc8\x6c" "\xb9\x4a\xae\x96\x6b\xe4\x5a\xb9\x4e\xae\x97\x1b\xe4\x46\xb9\x49\x6e\x96" "\x5b\xe4\x56\xb9\x4d\x6e\x97\x3b\xe4\x4e\xf9\xa9\xdc\x25\x77\xcb\x3d\x72" "\xaf\xdc\x27\xf7\xcb\x03\xf2\x33\x79\x50\x7e\x2e\x0f\xc9\x2f\x64\x8e\xfc" "\x52\x1e\x96\x7f\x92\x47\xe4\x57\xf2\xa8\xfc\x5a\xe6\xca\x6f\xe4\x31\xf9" 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"\x38\x28\x1c\x1c\xbe\x12\xbe\x12\x7a\x7f\x9f\x5a\x16\x5d\x1e\xcd\x88\x7e" "\x14\xcd\x8c\xae\x88\x66\x45\x3f\x8e\xae\x8c\x7e\x12\xcd\x8e\xae\x8a\xae" "\x8e\xae\x89\xae\x8d\xae\x8b\xae\x8f\x6e\x88\x6e\x8c\x6e\x8a\x6e\x8e\x6e" "\x89\x6e\x8d\x6e\x8b\x6e\x8f\xee\x88\x7a\xdf\xb0\xa0\x70\xe0\xa4\x53\x4e" "\xbb\xc0\x15\x70\x05\x5d\x8c\x2b\xe4\x62\xdd\x35\x2e\xce\x5d\xeb\x0a\xbb" "\xeb\x5c\xc4\x5d\xef\xe2\xdd\x0d\xae\x88\xbb\xd1\x15\x75\xc5\x5c\x71\x57" "\xc2\x25\xb8\x92\xae\x94\x33\x0e\x9d\x75\xe4\x42\x57\xda\x95\x71\x51\x77" "\x93\x2b\xeb\x6e\x76\x89\xae\x9c\x2b\xef\x2a\x38\xe7\x2a\xba\x24\xd7\xde" "\x75\x70\x1d\x5c\x47\xf7\x84\xeb\xe4\x3a\xbb\x2e\xee\x49\xf7\xa4\x7b\xca" "\x3d\xe5\x9e\x76\x4f\xbb\x67\x5c\x77\xf7\xac\xeb\xe1\x9e\x73\x3d\xdd\xf3" "\xae\x97\x7b\xc1\xbd\xe0\x5e\x74\x7d\x5c\x5f\xd7\xcf\xbd\xe4\xfa\xbb\x97" "\xdd\x00\x37\xd0\xa5\xb8\x14\x37\xd8\x0d\x76\x43\xdc\x10\x37\xcc\x0d\x73" "\x23\xdc\x08\x37\xd2\x8d\x74\xa3\xdc\x28\x97\xea\x52\xdd\x18\x37\xc6\x8d" "\x75\x63\xdd\x38\x37\xce\x8d\x77\xe3\xdd\x44\x37\xd1\x4d\x72\x93\xdc\x14" "\x37\xc5\x4d\x73\xd3\x5c\x9a\x4b\x73\x33\xdc\x0c\x37\xd3\xcd\x74\xb3\xdc" "\x2c\x37\xc7\xcd\x71\xe9\x2e\xdd\xcd\x77\xf3\xdd\x02\xb7\xc0\x2d\x72\x8b" "\xdc\xe2\xc4\xc5\x6e\x89\x5b\xe2\x96\xb9\x65\x2e\xc3\x65\xb8\x4c\x97\xe9" "\xb2\x5c\x96\x5b\xe9\x56\xba\x6c\x97\xed\x56\xbb\xd5\x6e\xad\x5b\xeb\xd6" "\xbb\xf5\x6e\xa3\xdb\xe8\x36\xbb\xcd\x6e\xab\xdb\xea\xb6\xbb\xed\x6e\xa7" "\xdb\xe9\x76\xb9\x5d\x6e\x8f\xdb\xe3\xf6\xb9\x7d\xee\x80\x3b\xe0\x0e\xba" "\x83\xee\x90\x3b\xe4\x72\x5c\x8e\x3b\xec\x0e\xbb\x23\xee\x88\x3b\xea\xbe" "\x76\xb9\xee\x1b\x77\xcc\x7d\xeb\x8e\xbb\xef\xdc\x09\xf7\xbd\x3b\xe9\x7e" "\x70\xa7\xdc\x69\x77\xc6\xfd\xe8\xce\xba\x9f\xdc\x39\x77\xde\x5d\x70\x3f" "\xbb\x8b\xee\x17\x77\xc9\xfd\xea\x2e\x3b\xef\xd2\x22\xef\x44\x66\x44\xde" "\x8d\xcc\x8c\xbc\x17\x99\x15\x99\x1d\x99\x13\x99\x1b\x49\x8f\xcc\x8b\xcc" "\x8f\xbc\x1f\x59\x10\x59\x18\x59\x14\xf9\x20\xb2\x38\xf2\x61\x64\x49\x64" "\x69\x64\x59\x64\x79\x24\x23\xf2\x51\x24\x33\xb2\x22\x92\x15\xf9\x38\xb2" "\x32\xf2\x49\x24\x3b\xb2\x2a\xb2\x3a\xb2\x26\xb2\x36\xb2\x2e\xe2\x7d\xc9" "\x5d\xa1\x2f\xed\xcb\xf8\xa8\xbf\xc9\x97\xf5\x37\xfb\x44\x5f\xce\x97\xf7" "\x15\xbc\xf3\x15\x7d\x92\xbf\xc5\x57\xf2\xb7\xfa\xca\xfe\x36\x5f\xc5\xdf" "\xee\xab\xfa\x3b\x7c\x35\x5f\xdd\xd7\xf0\x8f\xf9\x36\xbe\xad\x6f\xe7\xdb" "\xfb\x0e\xfe\x71\xdf\xd1\x3f\xe1\x3b\xf9\xce\xbe\x8b\x7f\xd2\x77\xf5\x4f" "\xf9\x6e\xfe\x69\x9f\xec\x9f\xf1\xdd\xfd\xb3\xbe\x87\x7f\xce\xf7\xf4\xcf" "\xfb\x5e\xfe\x05\xdf\xdb\xbf\xe8\xfb\xf8\xbe\xbe\x9f\x7f\xc9\xf7\xf7\x2f" "\xfb\x01\x7e\xa0\x4f\xf1\x83\xfc\x60\xff\x8a\x1f\xe2\x87\xfa\x61\x7e\xb8" "\x1f\xe1\x5f\xf5\x23\xfd\x6b\x7e\x94\x7f\xdd\xa7\xfa\xd1\x7e\x8c\x7f\xc3" "\x8f\xf5\x6f\xfa\x71\xfe\x2d\x3f\xde\x4f\xf0\x13\xfd\xdb\x7e\x92\x9f\xec" "\xa7\xf8\xa9\x7e\x9a\x9f\xee\xd3\xfc\x3b\x7e\x86\x7f\xd7\xcf\xf4\xef\xf9" "\x59\x7e\xb6\x9f\xe3\xe7\xfa\x74\x3f\xcf\xcf\xf7\xef\xfb\x05\x7e\xa1\x5f" "\xe4\x3f\xf0\x8b\xfd\x87\x7e\x89\x5f\xea\x97\xf9\xe5\x3e\xc3\x7f\xe4\x33" "\xfd\x0a\x9f\xe5\x3f\xf6\x2b\xfd\x27\x3e\xdb\xaf\xf2\xab\xfd\x1a\xbf\xd6" "\xaf\xf3\xeb\xfd\x06\xbf\xd1\x6f\xf2\x9b\xfd\x16\xbf\xd5\x6f\xf3\xdb\xfd" "\x0e\xbf\xd3\x7f\xea\x77\xf9\xdd\x7e\x8f\xdf\xeb\xf7\xf9\xfd\xfe\x80\xff" "\xcc\x1f\xf4\x9f\xfb\x43\xfe\x0b\x9f\xe3\xbf\xf4\x87\xfd\x9f\xfc\x11\xff" "\x95\x3f\xea\xbf\xf6\xb9\xfe\x1b\x7f\xcc\x7f\xeb\x8f\xfb\xef\xfc\x09\xff" "\xbd\x3f\xe9\x7f\xf0\xa7\xfc\x69\x7f\xc6\xff\xe8\xcf\xfa\x9f\xfc\x39\x7f" "\xde\x5f\xf0\x3f\xfb\x8b\xfe\x17\x7f\xc9\xff\x9a\x77\x23\xe0\xaf\xf6\x93" "\x74\xc6\x18\x63\x8c\xb1\xff\x1f\xa8\x3f\x38\x3e\xe8\xef\xfc\x4c\xfe\x65" "\xe4\x19\x2c\x84\xb8\x76\x77\x89\xdc\xff\x5c\x73\x6b\xd1\x3f\xcf\x87\xca" "\x84\xae\x11\x21\xc4\x33\x03\x7b\x3f\xfc\xbf\x47\xbd\x7a\x29\x29\x29\x7f" "\x39\x37\x5b\x89\xa0\xcc\x52\x21\x44\xe4\x4a\x7e\x01\x71\x25\x5e\x25\xba" "\x88\xa7\x44\xb2\xe8\x2c\x2a\xfd\xdd\xf5\x0d\x95\x7d\x2f\xd2\x1f\xd4\x8f" "\xde\x2e\x44\xec\x5f\xe5\xc4\x88\x2b\xf1\x95\xfa\xb7\xfe\x17\xf5\x1f\x7f" "\x72\x62\x66\xd5\xf0\x42\xfc\x7f\x53\x7f\xa9\x10\x89\x65\xae\xe4\x14\x12" "\x57\xe2\x2b\xf5\x2b\xff\x17\xf5\x8b\x75\xfc\x83\xf5\x17\xfa\x2a\x4d\x88" "\x4e\x7f\x95\x13\x27\xae\xc4\x57\xea\x27\x89\x27\xc4\xb3\x22\xf9\x6f\xce" "\x64\x8c\x31\xc6\x18\x63\x8c\x31\xc6\xfe\x6c\xa8\xac\xd1\xf3\x8f\xee\x9f" "\xf3\xee\xcf\x13\xf4\x95\x9c\x82\xe2\x4a\xfc\x47\xf7\xe7\x8c\x31\xc6\x18" "\x63\x8c\x31\xc6\x18\xbb\xfa\x9e\xef\xdb\xef\xe9\xc7\x93\x93\x3b\xf7\xe4" "\x09\x4f\x78\xc2\x93\xff\x98\x5c\xed\xff\x4c\x8c\x31\xc6\x18\x63\x8c\xb1" "\x7f\xb5\x2b\x17\xfd\x57\x7b\x25\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\x58\xfe\xf5\xff\xe2\xeb\xc4\xae" "\xf6\x1e\x19\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\x8c\xb1\xab\xed\x7f" "\x05\x00\x00\xff\xff\xd0\xa0\x3b\x6f", 5373); syz_mount_image(/*fs=*/0x200000c0, /*dir=*/0x20001540, /*flags=MS_NOEXEC|MS_NODEV|0x20000000*/ 0x2000000c, /*opts=*/0x20000100, /*chdir=*/1, /*size=*/0x14fd, /*img=*/0x20002a80); memcpy((void*)0x20000040, "./bus\000", 6); syscall(__NR_creat, /*file=*/0x20000040ul, /*mode=*/0ul); memcpy((void*)0x20000200, "/dev/nbd", 8); *(uint8_t*)0x20000208 = 0x30; *(uint8_t*)0x20000209 = 0; memcpy((void*)0x20000140, "./bus\000", 6); syscall(__NR_mount, /*src=*/0x20000200ul, /*dst=*/0x20000140ul, /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*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); const char* reason; (void)reason; use_temporary_dir(); loop(); return 0; }