// https://syzkaller.appspot.com/bug?id=6de86f1b96720cf6af9b435cd7278fa821932802 // 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_getegid #define __NR_getegid 177 #endif #ifndef __NR_lgetxattr #define __NR_lgetxattr 9 #endif #ifndef __NR_memfd_create #define __NR_memfd_create 279 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_setxattr #define __NR_setxattr 5 #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 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; } #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")) { } } 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 == 3) break; event_timedwait(&th->done, 50 + (call == 1 ? 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++) { 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); } } uint64_t r[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: res = syscall(__NR_getegid); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000100, "ext4\000", 5); memcpy((void*)0x20000200, "./file1\000", 8); *(uint64_t*)0x20000540 = r[0]; sprintf((char*)0x20000548, "0x%016llx", (long long)r[0]); sprintf((char*)0x2000055a, "%023llo", (long long)r[0]); memcpy( (void*)0x20000571, "\xca\x42\xad\x87\xc4\x1b\xb3\xb2\x50\x7e\x4e\x12\x10\x4f\x0c\xd5\x13" "\xe9\x53\x5e\xff\xc1\x59\xd7\x54\x61\x24\x46\x25\x73\x07\x00\x00\x00" "\x63\x3a\x03\xe3\x04\x6f\x23\x2b\x80\x64\xa8\xca\xbf\xb0\x2b\xa4\x4b" "\x00\x00\x00\x00\x00\x00\x04\xf9\x1b\x84\x55\xb2\x0d\x70\x9c\x38\x19" "\xef\x17\x0b\x9d\xc2\x46\xe6\x39\x94\xd4\x10\xb1\x5e\x76\x89\xc7\x69" "\xed\xb7\x05\x13\xca\xcf\x60\x50\x0d\x1d\x55\x82\x2f\xe3\x8a\x4b\x03" "\x00\x8d\x4c\x0e\xd9\x4c\xa6\xbd\xef\x60\x04\xb5\xf5\x9b\x5e\x83\x57" "\x27\x0c\x2b\x45\x55\xbd\x5b\x50\xbf\x6b\xc9\xa5\xfb\x43\xc1\x5a\xf0" "\xd0\x49\x31\xe0\xf0\x2b\xd8\x68\x8b\x07\x84\xb3\xee\xc6\x3c\xef\x9f" "\xa4\x41\xe4\xbf\x31\xae\x13\x9f\x76\xb9\x4a\xf2\x49\x74\x66\x3f\xea" "\xde\x4e\xb9\xd0\x4d\x53\x54\x54\xeb\x01\x5a\xed\xa9\x37\x8f\x00\x00" "\x6d\x2b\x9f\x32\xf8\x6d\x5f\x2a\x39\x92\x9c\xf2\x90\x68\x64\x4d\x70" "\x5e\x75\x78\xbd\x7a\x02\xbb\x2c\x68\xb8\x3b\x20\x5b\x51\x45\x24\xdb" "\x9c\x89\x84\xcb\x06\x74\xfd\xe5\x21\x9d\x83\x5a\xa2\x03\x39\x3e\x01" "\x26\x1e\xfa\x5e\x03\xb3\x5d\x76\xb9\x31\xda\x51\x3d\x97\x58\xda\xed" "\xc7\xc7\x00\x00\x00\x00\x00\x00\x84\x00\x00\x00\x00\x00\x10\x00\x00" "\x17\xdf\x68\x1d\x00\x54\x3d\x72\x4b\xdf\x70\x55\x25\x0a\xd7\xa6\xda" "\xb4\x40\x1f\xdc\x30\x20\x93\x5c\xd0\x0b\x89\x36\xd5\x28\xc2\xb2\x90" "\xfb\xe4\x4b\xfa\xe6\x96\xbf\x65\xd8\x15\x1d\x40\xd6\x5f\xb2\x67\x4e" "\x07\x51\xd1\x77\x4f\xd0\x04\xe1\x60\x1d\x4e\xbf\x0d\x9f\xf6\x1e\x81" "\x37\x62\x0a\x93\x3a\x0b\x84\xdb\x38\x3c\x15\x75\x7a\xb5\x21\x79\x64" "\xdb\x04\xbc\x8f\x5d\xc6\x7a\x8c\x90\xde\x32\x0f\x2f\xcb\x7f\x9b\xbe" "\x79\x9e\x1f\x87\xce\xa3\xac\x3d\x42\x07\x3f\xb3\xcd\x8c\x66\xbd\x27" "\xc2\x8b\x30\x2b\x52\x5f\x45\x3e\x0f\x20\xc4\x5b\x11\x67\xbb\x70\x49" "\x43\x56\x3a\xaf\x86\xb3\x6a\xe7\x0e\x48\x93\x5c\x06\x00\x00\x00\x06" "\x25\xfb\x27\x62\x10\x23\x3c\xcb\x3c\xe9\x6e\x47\x98\xbc\xa9\xd8\x49" "\xfd\x7b\xa1\xe0\x43\x1f\x64\x2f\x53\x94\x21\x21\x81\x27\xa6\xcf\x67" "\x23\x3d\x31\xd7\x54\x3f\x06\x41\x00\x53\xb2\x70\xb1\xef\x85\x82\x01" "\x38\x62\x7c\xf0\x25\x26\x7c\x81\xc1\x6c\xff\x8e\x86\xce\x9c\x75\x75" "\x71\x19\x03\xf7\x88\xb1\x03\x8a\x02\x39\x44\x27\xdb\x81\x59\x66\xc2" "\xf6\x69\x26\x69\x69\x10\x8e\x57\xa8\x64\x1b\xef\xbf\xb6\x0a\x3f\x6f" "\xb3\xc1\xbf\x48\xc7\x43\xda\x3d\x60\xf6\x88\xbf\x5a\x50\xb1\x67\x1e" "\xfa\xd7\xaf\xbf\xa1\x0d\xcf\x82\xe9\xac\x11\x6d\xb6\xf8\x92\xdc\xf1" "\x98\x41\x03\xc1\x09\x7a\x2f\x1d\xe1\xa9\x5d\x1b\x55\x92\x5d\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x17\x28\xb6\x7b\x57\xc8\x2c\x13\xe1" "\x42\x2c\x31\x26\x2c\xe9\xcb\x89\xaa\xc1\xd0\x08\x69\x7d\xa0\x80\x97" "\xc6\x4e\xc8\x01\x82\x31\x2a\x75\xee\x27\xc6\xa0\xba\x8b\x57\x7b\x47" "\xee\xa6\x3d\x33\x56\x63\x5c\x2f\x99\xe0\x6c\xf6\x47\xf4\x7a\x93\x6c" "\x40\x30\xf4\x8c\x90", 651); sprintf((char*)0x200007fc, "0x%016llx", (long long)r[0]); memcpy( (void*)0x20000cc0, "\x78\x9c\xec\xdd\xef\x6b\x1c\x69\x1d\x00\xf0\xef\x4c\xb2\xb9\xb4\xcd" "\x5d\xf6\x54\xe4\x3c\xf1\xee\xf0\x4e\xd2\x43\xbb\x9b\x5c\xbc\x6b\x10" "\x69\x2b\x88\xbe\x2a\xa8\xf5\x7d\x8c\xc9\x26\x84\x6c\xb2\x21\xbb\xa9" "\x4d\x28\x9a\xe2\x1f\x20\x88\xa8\xe0\x2b\x5f\xf9\x46\xf0\x0f\x10\xa4" "\x7f\x82\x08\x05\x7d\x2f\x2a\x8a\x68\xab\x2f\xb5\x23\xbb\x3b\xf1\x9a" "\x64\x37\xd9\x90\x1f\xdb\x6e\x3e\x1f\x98\xcc\xf3\xcc\x33\x33\xdf\xe7" "\x19\xb2\xcf\xce\xec\x3c\xcc\x04\x70\x61\xbd\x15\x11\xb7\x22\x62\x28" "\x22\xde\x8d\x88\xf1\x7c\x79\x9a\x4f\xb3\xcd\xcc\x4e\x7b\xbd\x27\x8f" "\xef\xcf\x37\xa7\x24\xb2\xec\xce\x3f\x92\x48\xf2\x65\xbb\xfb\x6a\xe6" "\x87\x23\xe2\x4a\x7b\x93\x18\x8d\x88\x6f\x7c\x35\xe2\xdb\xc9\xc1\xb8" "\xf5\xad\xed\x95\xb9\x6a\xb5\xb2\x91\xe7\xcb\x8d\xd5\xf5\x72\x7d\x6b" "\xfb\xda\xf2\xea\xdc\x52\x65\xa9\xb2\x36\x3d\x3d\xf5\xc1\xcc\xf5\x99" "\xf7\x67\x26\xb3\xdc\x89\xda\x59\x8c\x88\x1b\x5f\xfe\xcb\x8f\x7f\xf0" "\x8b\xaf\xdc\xf8\xcd\xe7\xbe\xf3\xc7\xd9\xbf\x5d\xfd\x6e\xb3\x5a\x5f" "\xfc\x78\xbb\xde\x11\x31\x7f\xa2\x00\x5d\xb4\xf7\x5d\x68\x1d\x8b\x5d" "\xcd\x63\xb4\x71\x16\xc1\xfa\x60\x28\x6f\x4f\x61\xa8\xdf\x35\x01\x00" "\xa0\x17\xcd\x73\xfc\x8f\x44\xc4\xa7\x5b\xe7\xff\xe3\x31\xd4\x3a\x9b" "\x03\x00\x00\x00\x06\x49\x76\x73\x2c\xfe\x93\x44\x64\x00\x00\x00\xc0" "\xc0\x4a\x23\x62\x2c\x92\xb4\x94\x8f\x05\x18\x8b\x34\x2d\x95\xda\x63" "\x78\x3f\x16\x97\xd3\x6a\xad\xde\xf8\xec\x62\x6d\x73\x6d\xa1\x59\x16" "\x51\x8c\x42\xba\xb8\x5c\xad\x4c\xe6\x63\x85\x8b\x51\x48\x9a\xf9\xa9" "\x7c\x8c\xed\x6e\xfe\xbd\x7d\xf9\xe9\x88\x78\x35\x22\x7e\x34\x7e\xa9" "\x95\x2f\xcd\xd7\xaa\x0b\xfd\xfe\xf1\x03\x00\x00\x00\x2e\x88\x2b\x6f" "\xee\xbd\xfe\xff\xf7\x78\xda\x4a\x03\x00\x00\x00\x03\xa6\xd8\x35\x03" "\x00\x00\x00\x0c\x0a\x97\xfc\x00\x00\x00\x30\xf8\x5c\xff\x03\x00\x00" "\xc0\x40\xfb\xda\xed\xdb\xcd\x29\xdb\x7d\x8f\xf7\xc2\xdd\xad\xcd\x95" "\xda\xdd\x6b\x0b\x95\xfa\x4a\x69\x75\x73\xbe\x34\x5f\xdb\x58\x2f\x2d" "\xd5\x6a\x4b\xad\x67\xf6\xad\x1e\xb5\xbf\x6a\xad\xb6\xfe\xf9\x58\xdb" "\xbc\x57\x6e\x54\xea\x8d\x72\x7d\x6b\x7b\x76\xb5\xb6\xb9\xd6\x98\x5d" "\xde\xf3\x0a\x6c\x00\x00\x00\xe0\x1c\xbd\xfa\xe6\xc3\x3f\x24\x11\xb1" "\xf3\x85\x4b\xad\x29\xf2\xe7\x00\x02\xec\xf1\xe7\x7e\x57\x00\x38\x4d" "\x43\xfd\xae\x00\xd0\x37\xc3\xfd\xae\x00\xd0\x37\x85\x23\xd7\xd0\x43" "\xc0\xa0\x4b\x8e\x28\xef\x3a\x78\xe7\xb7\xa7\x5f\x17\x00\x00\xe0\x6c" "\x4c\x7c\xe2\xe0\xfd\xff\x91\xbc\xec\xe8\xdf\x06\x80\x17\x99\xb1\x3e" "\x00\x70\xf1\xb8\xbb\x07\x17\x57\xe1\x18\x23\x00\xf5\x15\x30\x98\x5e" "\x69\xcf\x5e\xea\x56\x7e\xe2\xfb\xff\xd5\x2c\x3b\x7e\xad\x00\x00\x80" "\xd3\x34\xd6\x9a\x92\xb4\x94\xdf\x0b\x1c\x8b\x34\x2d\x95\x22\x5e\x6e" "\xbd\x16\xa0\x90\x2c\x2e\x57\x2b\x93\xf9\xf5\xc1\xef\xc7\x0b\x2f\x35" "\xf3\x53\xad\x2d\x93\x23\xc7\x0c\x03\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6d\x59\x96\x44\x06\x00" "\x00\x00\x0c\xb4\x88\xf4\xaf\x49\xeb\x69\xfe\x11\x13\xe3\xef\x8c\xed" "\xfd\x75\x60\xdf\x5b\xbf\x7e\x76\xe7\x27\xf7\xe6\x1a\x8d\x8d\xa9\x88" "\x91\xe4\x9f\xe3\xcd\x45\x23\x11\xd1\xf8\x69\xbe\xfc\xbd\xcc\x2b\x01" "\x00\x00\x00\xe0\x39\xd0\xbe\x4e\xcf\xe7\x53\xfd\xae\x0d\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\x83\xe6\xc9\xe3\xfb\xf3\xbb\xd3\x79\xc6\xfd\xfb\x97\x22\xa2\xd8" "\x29\xfe\x70\x8c\xb6\xe6\xa3\x51\x88\x88\xcb\xff\x4a\x62\xf8\x99\xed" "\x92\x88\x18\x3a\x85\xf8\x3b\x0f\x22\xe2\xb5\x4e\xf1\x93\x78\x9a\x65" "\x59\x31\xaf\x45\xa7\xf8\x97\xce\x38\x7e\xb1\x75\x68\x3a\xc7\x4f\x23" "\xe2\xca\x29\xc4\x87\x8b\xec\x61\xb3\xff\xb9\xd5\xe9\xf3\x97\xc6\x5b" "\xad\x79\xe7\xcf\xdf\x70\x3e\x9d\x54\xf7\xfe\x2f\xfd\x7f\xff\x37\xd4" "\xa5\xff\x79\xb9\xc7\x18\xaf\x3f\xfa\x55\xb9\x6b\xfc\x07\x11\xaf\x0f" "\x77\xee\x7f\x76\xe3\x27\xed\xf8\x49\xec\x8b\xff\x76\x8f\xf1\xbf\xf5" "\xcd\xed\xed\x6e\x65\xd9\xcf\x23\x26\x3a\x7e\xff\x24\x7b\x62\x95\x1b" "\xab\xeb\xe5\xfa\xd6\xf6\xb5\xe5\xd5\xb9\xa5\xca\x52\x65\x6d\x7a\x7a" "\xea\x83\x99\xeb\x33\xef\xcf\x4c\x96\x17\x97\xab\x95\xfc\x6f\xc7\x18" "\x3f\xfc\xd4\xaf\x9f\x1e\xd6\xfe\xcb\x5d\xe2\x17\xf7\xb6\xff\xc0\xf1" "\x7f\xa7\xc7\xf6\xff\xf7\xd1\xbd\xc7\x1f\x6d\x27\x0b\x9d\xe2\x5f\x7d" "\xbb\xf3\xf7\xef\x6b\x5d\xe2\xa7\xf9\x77\xdf\x67\xf2\x74\xb3\x7c\x62" "\x37\xbd\xd3\x4e\x3f\xeb\x8d\x5f\xfe\xee\x8d\xc3\xda\xbf\xd0\xa5\xfd" "\xa3\x47\xb4\xff\x6a\x8f\xed\x7f\xf7\xeb\xdf\xff\x53\x8f\xab\x02\x00" "\xe7\xa0\xbe\xb5\xbd\x32\x57\xad\x56\x36\x0e\x49\x8c\xf6\xb0\xce\x39" "\x27\x6e\x3e\x1f\xd5\x78\x61\x12\x3b\xcf\x47\x35\xba\x27\xb2\xef\xb5" "\xff\x1f\x4f\xb6\x9f\x13\x6e\x7e\x20\x91\x9d\x64\xf3\xe1\x38\x85\x6a" "\x8c\x1c\xe3\x73\x7a\x64\xe2\x93\xc7\x39\x3e\xfd\xec\x95\x00\x00\x80" "\xb3\xf0\xe1\x49\x7f\xbf\x6b\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x17\x57\x0f\xcf\x03\x7b\xa5\x43\xd1\x68\x44" "\xf4\xfc\xec\xb1\xfd\x31\x77\xfa\xd3\x54\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\x80\x43\xfd\x2f\x00\x00\xff\xff\xcb\xf7\xd5\x77", 1289); syz_mount_image(/*fs=*/0x20000100, /*dir=*/0x20000200, /*flags=MS_SILENT|0x4000000*/ 0x4008000, /*opts=*/0x20000540, /*chdir=*/1, /*size=*/0x509, /*img=*/0x20000cc0); break; case 2: memcpy((void*)0x20000080, "./file0\000", 8); memcpy((void*)0x200000c0, "trusted.overlay.upper\000", 22); syscall(__NR_setxattr, /*path=*/0x20000080ul, /*name=*/0x200000c0ul, /*val=*/0x20002700ul, /*size=*/0x1015ul, /*flags=*/0ul); break; case 3: memcpy((void*)0x20000000, "./file0\000", 8); memcpy((void*)0x20000440, "trusted.overlay.upper\000", 22); syscall(__NR_lgetxattr, /*path=*/0x20000000ul, /*name=*/0x20000440ul, /*val=*/0x20000480ul, /*size=*/0x1015ul); break; case 4: memcpy((void*)0x20000000, "./file0\000", 8); memcpy((void*)0x20000440, "trusted.overlay.upper\000", 22); syscall(__NR_lgetxattr, /*path=*/0x20000000ul, /*name=*/0x20000440ul, /*val=*/0x20000480ul, /*size=*/0x1015ul); 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); use_temporary_dir(); loop(); return 0; }