// 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) { errno = EMSGSIZE; return -1; } 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, 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 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, loopfd = -1, 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) { memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; 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) { if (strstr(opts, "errors=panic") || strstr(opts, "errors=remount-ro") == 0) 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) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } 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: while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW)) 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, MNT_DETACH | UMOUNT_NOFOLLOW)) 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 setup_sysctl() { char mypid[32]; snprintf(mypid, sizeof(mypid), "%d", getpid()); struct { const char* name; const char* data; } files[] = { {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"}, {"/proc/sys/kernel/hung_task_check_interval_secs", "20"}, {"/proc/sys/net/core/bpf_jit_kallsyms", "1"}, {"/proc/sys/net/core/bpf_jit_harden", "0"}, {"/proc/sys/kernel/kptr_restrict", "0"}, {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"}, {"/proc/sys/fs/mount-max", "100"}, {"/proc/sys/vm/oom_dump_tasks", "0"}, {"/proc/sys/debug/exception-trace", "0"}, {"/proc/sys/kernel/printk", "7 4 1 3"}, {"/proc/sys/kernel/keys/gc_delay", "1"}, {"/proc/sys/vm/oom_kill_allocating_task", "1"}, {"/proc/sys/kernel/ctrl-alt-del", "0"}, {"/proc/sys/kernel/cad_pid", mypid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) printf("write to %s failed: %s\n", files[i].name, strerror(errno)); } } 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) { memcpy((void*)0x20001500, "exfat\000", 6); memcpy((void*)0x20000740, "./file0\000", 8); memcpy((void*)0x20000780, "iocharset=cp855,allow_utime=00000000000000000000004,iocharset=cp865," "errors=continue,gid=", 88); sprintf((char*)0x200007d8, "0x%016llx", (long long)0xee01); memcpy( (void*)0x200007ea, "\x2c\x64\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\x35\x2c\x65\x72\x72\x6f\x72" "\x73\x3d\x63\x6f\x6e\x74\x69\x6e\x75\x65\x2c\x75\x74\x66\x38\x2c\x75\x74" "\x66\x38\x2c\x00\x63\xc4\xb7\x1d\x63\xde\x0e\xb1\x55\x03\xc1\x8f\x53\xf2" "\xea\x0f\x50\x05\x45\x6e\x17\xc1\xa4\x2c\x5f\xb7\x81\xb8\x35\xe9\x3b\xa7" "\xf0\xd3\x7e\xef\x7a\x42\x86\xbb\x57\x50\x6c\x92\x64\x7c\x98\xd8\x65\xd7" "\x6c\xee\xd6\xf8\x01\x11\xfe\x46\xeb\xa3\xcd\x38\x8c\x9b\x00\x00\x53\x18" "\x52\x79\x8c\xce\xaf\x17\xdd\xaf\x8a\x3a\xb3\xbe\xa1\x53\x56\x7f\xe6\xcb" 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"\xe0\xdd\x6c\x08\x3a\x3a\x00\xc8\xea\xcf\x10\x57\x8f\x78\xfe\xfb\x5f\xb4" "\xf6\xa6\xcb\x62\x60\xe7\x0c\x4e\xec\x25\x57\x9f\xb8\x29\x3b\x0f\x04\xd8" "\x4d\x8a\xa9\x4b\x81\xd9\x46\x9d\x01\x1e\xad\x4c\x16\x28\x0d\xdd\x9c\x75" "\x4d\xb7\xc2\x83\x6b\xd2\x23\x8f\x55\x6f\xdf\xb5\x75\x28\x94\x67\x74\x77" "\xba\xf7\x04\xb0\xcc\xef\x1c\x9a\xaa\xc7\xfc\x00\x00\x00\x00", 465); memcpy( (void*)0x20002a80, "\x78\x9c\xec\xdc\x7b\xb4\xce\xd5\xf6\x30\xf0\x39\xd7\x5a\x5f\x21\xe9\x49" "\x72\x5f\x73\xcd\x2f\x4f\xda\x58\x24\x49\x2e\x49\x72\x49\x92\x24\x49\x72" "\x4b\x48\x92\x24\x09\x89\x4d\x6e\x49\x48\x42\xee\x49\xee\x21\xb9\xc5\x4e" "\xee\xf7\x5b\xee\x49\x3b\x47\x92\x24\x21\x21\xc9\x7a\x87\x4e\xe7\xe7\x77" "\x7e\x9d\x33\x3a\xef\x7b\xce\xfb\xf3\xc7\x9e\x9f\x31\xd6\xd8\x6b\x3e\xdf" "\x67\xce\x67\xad\x3d\xf7\xd8\xcf\x77\x3d\x63\xec\xfd\x5d\xa7\x21\xd5\x1a" "\x54\xaf\x5c\x8f\x99\xe1\xdf\x82\x7f\xfd\x92\x0a\x00\x99\x01\xa0\x3f\x00" "\x5c\x0b\x00\x11\x00\x94\xce\x51\x3a\xc7\xa5\xeb\x59\x34\xa6\xfe\x7b\x2f" 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"\x89\x69\x89\xe9\x89\x19\x89\x99\x89\xf7\x13\xb3\x12\xb3\x13\x73\x12\x1f" "\x24\xe6\x26\x3e\x4c\xcc\x4b\xcc\x4f\x2c\x48\x2c\x4c\x2c\x4a\x7c\x94\x58" "\x9c\x58\x92\x48\x4b\x7c\x9c\x58\x9a\xf8\x24\xb1\x2c\xb1\x3c\xb1\x22\xb1" "\x32\xb1\x2a\xb1\x3a\x11\x42\xfe\xed\x71\x28\x18\x0a\x85\x64\xb8\x31\x14" "\x0e\x37\x85\x94\x50\x24\x14\x0d\xc5\x82\x0f\xc5\x43\x89\x70\x73\x28\x19" "\x6e\x09\xa5\xc2\xad\xa1\x74\xb8\x2d\x94\x09\xb7\x87\xb2\xa1\x5c\x28\x1f" "\x1e\x0b\x8d\x42\xe3\xd0\x24\x34\x0d\xcd\xc2\xe3\xa1\x79\x78\x22\xb4\x08" "\x2d\x43\xab\xf0\x64\x68\x1d\x9e\x0a\x6d\xc2\xd3\xa1\x6d\x78\x26\xb4\x0b" "\xcf\x86\xf6\xe1\xb9\xd0\x21\x3c\x1f\x3a\x86\x17\x42\xa7\xf0\x62\xe8\x1c" "\xba\x84\xae\xe1\xa5\xd0\x2d\xbc\x1c\xba\x87\x1e\x21\x35\xf4\x0c\xbd\xc2" "\x2b\xa1\x77\xe8\x13\xfa\x86\x7e\xa1\x7f\x78\x35\x0c\x08\xaf\x85\x81\xe1" "\xf5\x30\x28\x0c\x0e\x43\xc2\x1b\x61\x68\x78\x33\x0c\x0b\x6f\x85\xe1\x61" "\x44\x18\x19\xde\x0e\xa3\xc2\xe8\x30\x26\x8c\x0d\xe3\xc2\xf8\x30\x21\xbc" "\x13\x26\x86\x77\xc3\xa4\xf0\x5e\x98\x1c\xa6\x84\xa9\x61\x5a\x98\x1e\x66" "\x84\x99\xe1\xfd\x30\x2b\xcc\x0e\x73\xc2\x07\x61\x6e\xf8\x30\xcc\x0b\xf3" "\xc3\x82\xb0\x30\x2c\x0a\x1f\x85\xc5\x61\x49\x48\x0b\x1f\x87\xa5\xe1\x93" "\xb0\x2c\x2c\x0f\x2b\xc2\xca\xb0\x2a\xac\x0e\x6b\xc2\xda\xb0\x2e\xac\x0f" "\x1b\xc2\xc6\xb0\x29\x6c\x0e\x5b\xc2\xd6\xb0\x2d\x7c\x1a\xb6\x87\x1d\x61" "\x67\xd8\x15\x76\x87\x3d\x61\x6f\xf8\x2c\xec\x0b\x9f\x87\xfd\xe1\x8b\x90" "\x1e\xbe\x0c\x07\xc2\x5f\xc2\xc1\xf0\x55\x38\x14\xbe\x0e\x87\xc3\x37\xe1" "\x48\xf8\x36\x1c\x0d\xdf\x85\x63\xe1\xfb\x70\x3c\xfc\x10\x4e\x84\x93\xe1" "\x54\xf8\x31\x9c\x0e\x3f\x85\x33\xe1\x6c\x38\x17\x7e\x0e\xe7\xc3\x2f\xe1" "\x42\xf8\x35\x5c\x94\xbf\x59\x13\x42\x08\x21\x84\xf8\x97\xe8\x3f\xb9\xde" "\xf3\x1f\x3c\xa6\x7e\x1f\x97\xf4\x02\x80\x6b\x76\xe4\x3d\xfc\x3f\x6b\x6e" "\xca\xf5\xd7\x79\x1f\x95\xaf\x75\x02\x00\x9e\xe9\xd1\xe9\xe1\xbf\x8d\x2a" "\x55\x52\x53\x53\x7f\x7f\xee\x32\x0d\x51\xa1\xf9\x00\x90\xb8\x9c\x9f\x09" "\x2e\xc7\xcb\xa1\x15\x3c\x05\x6d\xa1\x25\x94\xfc\x87\xeb\xeb\xa3\xba\x9c" "\xe7\x3f\xa9\x9f\xbc\x0d\x20\xeb\x7f\xcb\xc9\x0c\x97\xe3\xcb\xf5\x6f\xf9" "\x27\xf5\x47\xcf\xfd\xd3\xfa\xf3\x01\x52\x0a\x5d\xce\xc9\x02\x97\xe3\xcb" "\xf5\x4b\xfd\x93\xfa\xb9\x9b\xff\x49\xfd\x2c\x5f\x4d\x00\x68\xf1\xdf\x72" "\xb2\xc1\xe5\xf8\x72\xfd\x12\xf0\x04\x3c\x0b\x6d\xff\xee\x99\x42\x08\x21" "\x84\x10\x42\x08\x21\xc4\x5f\xf5\x51\xe5\x3b\xfc\xd9\xf9\xf6\xd2\xf9\x3c" "\x9f\x01\x00\xf3\xd7\xc7\xae\x82\xdf\xe3\x7f\xe1\x7c\x2e\x84\x10\x42\x08" "\x21\x84\x10\x42\x88\x2b\xef\xf9\x2e\x5d\x9f\x7e\xbc\x6d\xdb\x96\x1d\x64" "\x22\x13\x99\xc8\xe4\xbf\x26\x57\xfa\x37\x93\x10\x42\x08\x21\x84\x10\xe2" "\x3f\xed\xf2\x4d\xff\x95\x5e\x89\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84" "\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08" "\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x91\x71\xfd\x6f\xfc\x3b\xb1\x2b" "\xbd\x47\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21" "\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42" "\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\xe2\x4a\xfb\x3f" "\x01\x00\x00\xff\xff\xe3\xb7\x33\x32", 5337); syz_mount_image(0x20001500, 0x20000740, 0x20000000, 0x20000780, 1, 0x14d9, 0x20002a80); memcpy((void*)0x20000040, "./bus\000", 6); syscall(__NR_creat, 0x20000040ul, 0ul); memcpy((void*)0x20000040, "./bus\000", 6); memcpy((void*)0x20000080, "./file0/file0\000", 14); syscall(__NR_rename, 0x20000040ul, 0x20000080ul); } int main(void) { syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); setup_sysctl(); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }