// https://syzkaller.appspot.com/bug?id=3c0c173ff55822aacb81ce7ae27a6676fba29a5c // 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 #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 thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { int state; } event_t; static void event_init(event_t* ev) { ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { if (ev->state) exit(1); __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); } static void event_wait(event_t* ev) { while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); } static int event_isset(event_t* ev) { return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; for (;;) { uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) return 1; now = current_time_ms(); if (now - start > timeout) return 0; } } 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 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)); } } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 5; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 2) break; event_timedwait(&th->done, 50 + (call == 2 ? 4000 : 0)); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } 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; } } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x2000c380, "/proc/crypto\000", 13); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x2000c380ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[0] = res; break; case 1: res = syscall(__NR_read, /*fd=*/r[0], /*buf=*/0x20000200ul, /*len=*/0x2031ul); if (res != -1) r[1] = *(uint32_t*)0x20000218; break; case 2: memcpy((void*)0x20001500, "exfat\000", 6); memcpy((void*)0x20000140, "./file0\000", 8); memcpy((void*)0x20000200, "dmask=00000000000000000000007,utf8,iocharset=iso8859-1,allow_utime=" "00000000000000000002001,fmask=00000000000000000000002,allow_utime=" "00000000000000000000005,umask=00000000000000000000001,gid=", 191); sprintf((char*)0x200002bf, "0x%016llx", (long long)r[1]); memcpy((void*)0x200002d1, ",uid=", 5); sprintf((char*)0x200002d6, "0x%016llx", (long long)-1); *(uint64_t*)0x200002e8 = -1; memcpy( (void*)0x20001540, "\x78\x9c\xec\xdc\x0b\x98\x8d\x55\xfb\x30\xf0\x75\xaf\xb5\x1e\xc6\x34" "\xb1\x9b\xe4\x30\xac\x7b\xdd\x0f\x3b\x0d\x96\x43\x92\x1c\x92\xe4\x90" "\x24\x49\x92\xe4\x94\x90\x34\x49\x92\x90\x18\x72\x4a\x1a\x92\x90\xe3" "\x24\x89\x21\x24\x87\x69\x4c\x1a\xe7\xf3\x21\xe7\x24\x79\xa5\x49\x92" "\x9c\x72\x0a\xeb\xbb\xa6\xde\xf7\xf3\x7f\xdf\xde\xf7\xeb\xfb\x7f\x6f" "\xdf\xdf\xf7\xfd\xe7\xfe\x5d\xd7\xba\xf6\xba\x67\xef\x7b\xed\x7b\xed" "\x7b\xcf\xec\xe7\x79\xe6\xba\xf6\x0f\x3d\x47\xd5\x6b\x51\xbf\x76\x33" "\x22\x12\xff\x16\xf8\xed\x26\x59\x08\x11\x23\x84\x18\x26\x84\x28\x20" "\x84\x08\x84\x10\x95\xe3\x2b\xc7\xe7\xdc\x9f\x4f\x41\xf2\xbf\xf7\x24" "\xec\xcf\xf5\x48\xda\xb5\xae\x80\x5d\x4b\xdc\xff\xdc\x8d\xfb\x9f\xbb" "\x71\xff\x73\x37\xee\x7f\xee\xc6\xfd\xcf\xdd\xb8\xff\xb9\x1b\xf7\x3f" 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"\x18\x63\x8c\x31\xc6\x18\x63\x8c\xb1\xff\xfb\x40\x48\xa1\x84\x16\x81" "\xc8\x23\xf2\x8a\x18\x91\x4f\xc4\x8a\xeb\x44\x9c\xb8\x5e\xe4\x17\x05" "\x44\x44\xdc\x20\xe2\xc5\x8d\xa2\xa0\xb8\x49\x14\x12\x85\x45\x11\x51" "\x54\x24\x88\x62\xa2\xb8\x30\x02\x85\x15\x24\x42\x51\x42\x94\x14\x51" "\x71\xb3\x28\x25\x6e\x11\x89\xa2\xb4\x28\x23\xca\x0a\x27\xca\x89\xf2" "\xa2\x82\xa8\x28\x6e\x15\x95\xc4\x6d\xa2\xb2\xb8\x5d\x54\x11\x77\x88" "\xaa\xa2\x9a\xa8\x2e\x6a\x88\x3b\x45\x4d\x71\x97\xa8\x25\xee\x16\xb5" "\xc5\x3d\xa2\x8e\xa8\x2b\xea\x89\xfa\xe2\x5e\xd1\x40\xdc\x27\x1a\x8a" "\xfb\x45\x23\xf1\x80\x68\x2c\x1e\x14\x4d\xc4\x43\xa2\xa9\x78\x58\x34" "\x13\x8f\x88\xe6\xe2\x51\xd1\x42\x3c\x26\x5a\x8a\xc7\x45\x2b\xd1\x5a" "\xb4\x11\x6d\x45\xbb\xff\xa3\xfc\x97\x45\x5f\xf1\x8a\xe8\x27\xfa\x8b" "\x64\x31\x40\x0c\x14\xaf\x8a\x41\x62\xb0\x18\x22\x86\x8a\x61\xe2\x35" "\x31\x5c\xbc\x2e\x46\x88\x37\x44\x8a\x18\x29\x46\x89\x37\xc5\x68\xf1" "\x96\x18\x23\xde\x16\x63\xc5\x38\x31\x5e\xbc\x23\x26\x88\x89\x62\x92" 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"\x23\x68\x04\x8d\xa1\x31\x34\x81\x26\xd0\x14\x9a\x42\x33\x68\x06\xcd" "\xa1\x39\xb4\x80\x16\xd0\x12\x5a\x42\x2b\x68\x05\x6d\xa0\x0d\xb4\x83" "\x76\xd0\x1e\xda\x43\x07\xe8\x00\x9d\xa0\x13\x74\x86\xce\xd0\x05\xba" "\x40\x12\x24\x41\x57\xe8\x0a\xdd\xa0\x1b\x74\x87\xee\xd0\x03\x7a\x40" "\x4f\xe8\x09\xbd\xa0\x37\xf4\x86\x97\xe1\x65\x78\x05\x5e\x81\xfe\x50" "\x47\x0e\x80\x81\x30\x10\x06\xc1\x20\x18\x02\x43\x61\x28\xbc\x06\xc3" "\xe1\x75\x78\x1d\xde\x80\x14\x18\x09\xa3\xe0\x4d\x78\x13\xde\x82\x31" "\x70\x16\xc6\xc2\x38\x18\x0f\xe3\xa1\xa6\x9c\x08\x93\x60\x32\x90\x9c" "\x0a\xa9\x90\x0a\xd3\x60\x1a\x4c\x87\xe9\x30\x03\x3e\x80\x0f\x60\x16" "\xa4\xc1\x6c\x98\x03\x73\x60\x2e\xcc\x83\x79\xf0\x11\x2c\x80\x8f\xe1" "\x63\x58\x04\x8b\x60\x09\xa4\x43\x3a\x64\xc0\x52\xc8\x84\x4c\x58\x06" "\xe7\x20\x0b\x96\xc3\x0a\x58\x09\xab\x60\x35\xac\x82\xb5\xb0\x0e\xd6" "\xc2\x06\xd8\x08\x1b\x60\x33\x6c\x86\xad\xb0\x15\x3e\x87\xcf\x61\x07" "\xec\x80\x5d\xb0\x0b\xf6\xc0\x1e\xf8\x02\xbe\x80\x2f\xe1\x4b\x48\x81" 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"\x38\x70\xd2\x29\xa7\x5d\xe0\xf2\xb8\xbc\x2e\xc6\xe5\x73\xb1\xee\x3a" "\x17\xe7\xae\x77\xf9\x5d\x01\x17\x71\x37\xb8\x78\x77\xa3\x2b\xe8\x6e" "\x72\x85\x5c\x61\x57\xc4\x15\x75\x09\xae\x98\x2b\xee\x8c\x43\x67\x1d" "\xb9\xd0\x95\x70\x25\x5d\xd4\xdd\xec\x4a\xb9\x5b\x5c\xa2\x2b\xed\xca" "\xb8\xb2\xce\xb9\x72\xae\xbc\x6b\xeb\xda\xb9\x76\xae\xbd\x7b\xd2\x75" "\x70\x1d\x5d\x27\xf7\x94\x7b\xca\x3d\xed\x9e\x76\xcf\xb8\x67\xdc\xb3" "\xae\xab\x7b\xce\x75\x73\xcf\xbb\xee\xee\x05\xd7\xc3\xbd\xe8\x5e\x74" "\x2f\xb9\x5e\xae\xb7\xeb\xe3\x5e\x76\x7d\xdd\x2b\xae\x9f\xeb\xef\x92" "\x5d\xb2\x1b\xe8\x06\xba\x41\x6e\x90\x1b\xe2\x86\xb8\x61\x6e\x98\x1b" "\xee\x86\xbb\x11\x6e\x84\x4b\x71\x29\x6e\x94\x1b\xe5\x46\xbb\xd1\x6e" "\x8c\x1b\xe3\xc6\xba\xb1\x6e\xbc\x1b\xef\x26\xb8\x09\x6e\x92\x9b\xe4" "\xa6\xb8\x29\x2e\xd5\xa5\xba\x69\x6e\x9a\x9b\xee\xa6\xbb\x19\x6e\x86" "\x9e\xe9\x66\xba\x34\x97\xe6\xe6\xb8\x39\x6e\xae\x9b\xeb\xe6\xbb\xf9" "\x6e\x41\xe2\x02\xb7\xd0\x2d\x74\x8b\xdd\x62\x97\xee\xd2\x5d\x86\xcb" "\x70\x99\x2e\xd3\x2d\x73\xcb\x5c\x96\xcb\x72\x2b\xdc\x0a\xb7\xca\xad" "\x72\x6b\xdc\x1a\xb7\xce\xad\x73\x1b\xdc\x06\xb7\xc9\x6d\x72\x5b\xdc" "\x16\xb7\xcd\x6d\x73\xdb\xdd\x76\xb7\xd3\xed\x74\xbb\xdd\x6e\xb7\xd7" "\xed\x75\xfb\xdc\x3e\x2d\xdc\x7e\x77\xc0\x1d\x70\x07\xdd\x41\x77\xc8" "\x1d\x72\x87\xdd\xb7\x2e\xdb\x7d\xe7\x8e\xb8\xef\xdd\x51\xf7\x83\x3b" "\xe6\x7e\x74\xc7\xdd\x4f\xee\x84\x3b\xe9\x4e\xb9\xd3\xee\x8c\xfb\xd9" "\x9d\x75\xe7\xdc\x79\x77\xc1\x5d\x74\xbf\xb8\x4b\xee\xb2\xbb\xe2\xbc" "\x4b\x8d\xbc\x1b\x99\x16\x79\x2f\x32\x3d\xf2\x7e\x64\x46\xe4\x83\xc8" "\xcc\xc8\xac\x48\x5a\x64\x76\x64\x4e\xe4\xc3\xc8\xdc\xc8\xbc\xc8\xfc" "\xc8\x47\x91\x05\x91\x8f\x23\x0b\x23\x8b\x22\x8b\x23\x4b\x22\xe9\x91" "\x4f\x22\x19\x91\xa5\x91\xcc\xc8\xa7\x91\x65\x91\xcf\x22\x59\x91\xe5" "\x91\x15\x91\x95\x91\x55\x91\xd5\x11\xef\x8b\x6d\x0f\x7d\x09\x5f\xd2" "\x47\xfd\xcd\xbe\x94\xbf\xc5\x27\xfa\xd2\xbe\x8c\x2f\xeb\x9d\x2f\xe7" "\xcb\xfb\x0a\xbe\xa2\xbf\xd5\x57\xf2\xb7\xf9\xca\xfe\x76\x5f\xc5\xdf" "\xe1\xab\xfa\x6a\xbe\xba\x7f\xdc\xb7\xf2\xad\x7d\x1b\xdf\xd6\xb7\xf3" "\x4f\xf8\xf6\xfe\x49\xdf\xc1\x77\xf4\x9d\xfc\x53\xbe\xb3\x7f\xda\x77" "\xf1\xcf\xf8\x24\xff\xac\xef\xea\x9f\xf3\xdd\xfc\xf3\xbe\xbb\x7f\xc1" "\xf7\xf0\x2f\xfa\x9e\xfe\x25\xdf\xcb\xf7\xf6\x7d\xfc\xcb\xbe\xaf\x7f" "\xc5\xf7\xf3\xfd\x7d\xb2\x1f\xe0\x07\xfa\x57\xfd\x20\x3f\xd8\x0f\xf1" "\x43\xfd\x30\xff\x9a\x1f\xee\x5f\xf7\x23\xfc\x1b\x3e\xc5\x8f\xf4\xa3" "\xfc\x9b\x7e\xb4\x7f\xcb\x8f\xf1\x6f\xfb\xb1\x7e\x9c\x1f\xef\xdf\xf1" "\x13\xfc\x44\x3f\xc9\x4f\xf6\x53\xfc\x54\x9f\xea\xdf\xf5\xd3\xfc\x7b" "\x7e\xba\x7f\xdf\xcf\xf0\x1f\xf8\x99\x7e\x96\x4f\xf3\xb3\xfd\x1c\xff" "\xa1\x9f\xeb\xe7\xf9\xf9\xfe\x23\xbf\xc0\x7f\xec\x17\xfa\x45\x7e\xb1" "\x5f\xe2\xd3\xfd\x27\x3e\xc3\x2f\xf5\x99\xfe\x53\xbf\xcc\x7f\xe6\xb3" "\xfc\x72\xbf\xc2\xaf\xf4\xab\xfc\x6a\xbf\xc6\xaf\xf5\xeb\xfc\x7a\xbf" "\xc1\x6f\xf4\x9b\xfc\x66\xbf\xc5\x6f\xf5\xdb\xfc\xe7\x7e\xbb\xdf\xe1" "\x77\xfa\x5d\x7e\xb7\xdf\xe3\xf7\xfa\x2f\xfc\x3e\xff\xa5\xdf\xef\xbf" "\xf2\x07\xfc\xd7\xfe\xa0\xff\x8b\x3f\xe4\xbf\xf1\x87\xfd\xb7\x3e\xdb" "\x7f\xe7\x8f\xf8\xef\xfd\x51\xff\x83\x3f\xe6\x7f\xf4\xc7\xfd\x4f\xfe" "\x84\x3f\xe9\x4f\xf9\xd3\xfe\x8c\xff\xd9\x9f\xf5\xe7\xfc\x79\x7f\xc1" "\x5f\xf4\xbf\xf8\x4b\xfe\xb2\xbf\xe2\xbd\xbf\x86\x17\xd1\x19\x63\x8c" "\x31\xc6\xfe\xbf\xa1\xfe\xe0\xfe\x01\xff\xe4\x67\xf2\xaf\x23\xc7\x40" "\x21\xc4\xf5\x3b\x8a\x66\xff\xe3\x9a\x9b\x0a\xfd\x36\x1f\x2c\x13\x3a" "\x47\x84\x10\xcf\xf6\xef\xf9\xc8\xdf\x46\x9d\x3a\xc9\xc9\x7f\xfb\x2a" "\x81\x2c\x25\x82\x92\x8b\x84\x10\x91\xab\xf9\x79\xc4\xd5\x78\xb9\xe8" "\x24\x9e\x16\x49\xa2\xa3\xa8\xf8\x4f\xeb\x1b\x2c\x7b\x5f\xa4\x3f\x58" "\x3f\x7a\xbb\x10\xb1\xff\x21\x27\x46\x5c\x8d\xaf\xae\x7f\xeb\xbf\x58" "\xff\x89\xa7\xc6\x67\x54\x09\xcf\xc7\xff\x2f\xd6\x5f\x24\x44\x62\xc9" "\xab\x39\xf9\xc4\xd5\x78\xb9\xe8\xf4\xeb\xff\x68\x3b\x8a\x4a\xff\x62" "\xfd\xc2\xed\xff\xa0\xfe\x7c\xdf\xa4\x0a\xd1\xe1\x3f\xe4\xc4\x89\xab" "\x71\x4e\xfd\xbe\xc0\x6f\xf3\x27\xc5\x73\x22\xe9\xef\x1e\xc9\x18\x63" "\x8c\x31\xc6\x18\x63\x8c\xfd\x66\xb0\xac\xde\xfd\x8f\xce\x9f\x73\xce" "\xcf\x13\xf4\xd5\x9c\xbc\xe2\x6a\xfc\x47\xe7\xe7\x8c\x31\xc6\x18\x63" "\x8c\x31\xc6\x18\xbb\xf6\x5e\xe8\xdd\xe7\x99\x27\x92\x92\x3a\x76\xe7" "\x09\x4f\x78\xf2\xff\xd6\x44\x5d\xcb\x5f\xcf\x6b\xfd\x97\x89\x31\xc6" "\x18\x63\x8c\x31\xf6\x67\xbb\x7a\xd0\x7f\xad\x2b\x61\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" "\x72\xaf\xff\x8a\xaf\x13\xbb\xd6\x7b\x64\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\xae\xb5\xff\x11\x00\x00\xff\xff\x68\x87" "\x30\xba", 5374); syz_mount_image(/*fs=*/0x20001500, /*dir=*/0x20000140, /*flags=MS_NODIRATIME*/ 0x800, /*opts=*/0x20000200, /*chdir=*/1, /*size=*/0x14fe, /*img=*/0x20001540); break; case 3: memcpy((void*)0x200025c0, "./file0\000", 8); syscall(__NR_open, /*file=*/0x200025c0ul, /*flags=*/0ul, /*mode=*/0ul); break; case 4: syscall(__NR_sync); break; } } 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); setup_sysctl(); loop(); return 0; }