// https://syzkaller.appspot.com/bug?id=076b67d87102e27cd5984bfe01fa4362ca86656c // 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_bpf #define __NR_bpf 321 #endif #ifndef __NR_io_uring_setup #define __NR_io_uring_setup 425 #endif #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 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"); } else if (strncmp(fs, "gfs2", 4) == 0 && (strstr(opts, "errors=panic") || strstr(opts, "debug"))) { strcat(opts, ",errors=withdraw"); } res = mount(source, target, fs, flags, opts); if (res == -1) { err = errno; goto error_clear_loop; } res = open(target, O_RDONLY | O_DIRECTORY); if (res == -1) { err = errno; goto error_clear_loop; } if (change_dir) { res = chdir(target); if (res == -1) { err = errno; } } error_clear_loop: if (need_loop_device) reset_loop_device(loopname); errno = err; return res; } #define FS_IOC_SETFLAGS _IOW('f', 2, long) static void remove_dir(const char* dir) { int iter = 0; DIR* dp = 0; const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; retry: while (umount2(dir, umount_flags) == 0) { } dp = opendir(dir); if (dp == NULL) { if (errno == EMFILE) { exit(1); } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); while (umount2(filename, umount_flags) == 0) { } struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } int i; for (i = 0;; i++) { if (unlink(filename) == 0) break; if (errno == EPERM) { int fd = open(filename, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno != EBUSY || i > 100) exit(1); if (umount2(filename, umount_flags)) exit(1); } } closedir(dp); for (int i = 0;; i++) { if (rmdir(dir) == 0) break; if (i < 100) { if (errno == EPERM) { int fd = open(dir, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno == EBUSY) { if (umount2(dir, umount_flags)) exit(1); continue; } if (errno == ENOTEMPTY) { if (iter < 100) { iter++; goto retry; } } } exit(1); } } static void kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); for (int i = 0; i < 100; i++) { if (waitpid(-1, status, WNOHANG | __WALL) == pid) return; usleep(1000); } DIR* dir = opendir("/sys/fs/fuse/connections"); if (dir) { for (;;) { struct dirent* ent = readdir(dir); if (!ent) break; if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) continue; char abort[300]; snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", ent->d_name); int fd = open(abort, O_WRONLY); if (fd == -1) { continue; } if (write(fd, abort, 1) < 0) { } close(fd); } closedir(dir); } else { } while (waitpid(-1, status, __WALL) != pid) { } } static void reset_loop() { char buf[64]; snprintf(buf, sizeof(buf), "/dev/loop%llu", procid); int loopfd = open(buf, O_RDWR); if (loopfd != -1) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } } static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); write_file("/proc/self/oom_score_adj", "1000"); if (symlink("/dev/binderfs", "./binderfs")) { } } 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) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 11; 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); event_timedwait(&th->done, 50 + (call == 1 ? 4000 : 0) + (call == 8 ? 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 (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: // openat$ptp0 arguments: [ // fd: const = 0xffffffffffffff9c (8 bytes) // file: ptr[in, buffer] { // buffer: {2f 64 65 76 2f 70 74 70 30 00} (length 0xa) // } // flags: open_flags = 0x402 (4 bytes) // mode: const = 0x0 (2 bytes) // ] // returns fd_ptp memcpy((void*)0x200000000240, "/dev/ptp0\000", 10); syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000240ul, /*flags=O_APPEND|O_RDWR*/ 0x402, /*mode=*/0); break; case 1: // syz_mount_image$ext4 arguments: [ // fs: ptr[in, buffer] { // buffer: {65 78 74 34 00} (length 0x5) // } // dir: ptr[in, buffer] { // buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8) // } // flags: mount_flags = 0x200000 (8 bytes) // opts: ptr[in, fs_options[ext4_options]] { // fs_options[ext4_options] { // elems: array[fs_opt_elem[ext4_options]] { // fs_opt_elem[ext4_options] { // elem: union ext4_options { // block_validity: buffer: {62 6c 6f 63 6b 5f 76 61 6c 69 64 69 // 74 79} (length 0xe) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // bsddf: buffer: {62 73 64 64 66} (length 0x5) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // nombcache: buffer: {6e 6f 6d 62 63 61 63 68 65} (length 0x9) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // oldalloc: buffer: {6f 6c 64 61 6c 6c 6f 63} (length 0x8) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // debug_want_extra_isize: fs_opt["debug_want_extra_isize", // fmt[hex, int32]] { // name: buffer: {64 65 62 75 67 5f 77 61 6e 74 5f 65 78 74 // 72 61 5f 69 73 69 7a 65} (length 0x16) eq: const = 0x3d (1 // bytes) val: int32 = 0x80 (18 bytes) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // orlov: buffer: {6f 72 6c 6f 76} (length 0x5) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // nogrpid: buffer: {6e 6f 67 72 70 69 64} (length 0x7) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // noauto_da_alloc: buffer: {6e 6f 61 75 74 6f 5f 64 61 5f 61 // 6c 6c 6f 63} (length 0xf) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // grpjquota: buffer: {67 72 70 6a 71 75 6f 74 61 3d} (length // 0xa) // } // comma: const = 0x2c (1 bytes) // } // } // common: array[fs_opt_elem[fs_options_common]] { // } // null: const = 0x0 (1 bytes) // } // } // chdir: int8 = 0x3 (1 bytes) // size: len = 0x57b (8 bytes) // img: ptr[in, buffer] { // buffer: (compressed buffer with length 0x57b) // } // ] // returns fd_dir memcpy((void*)0x200000000040, "ext4\000", 5); memcpy((void*)0x2000000007c0, "./file1\000", 8); memcpy((void*)0x200000000200, "block_validity", 14); *(uint8_t*)0x20000000020e = 0x2c; memcpy((void*)0x20000000020f, "bsddf", 5); *(uint8_t*)0x200000000214 = 0x2c; memcpy((void*)0x200000000215, "nombcache", 9); *(uint8_t*)0x20000000021e = 0x2c; memcpy((void*)0x20000000021f, "oldalloc", 8); *(uint8_t*)0x200000000227 = 0x2c; memcpy((void*)0x200000000228, "debug_want_extra_isize", 22); *(uint8_t*)0x20000000023e = 0x3d; sprintf((char*)0x20000000023f, "0x%016llx", (long long)0x80); *(uint8_t*)0x200000000251 = 0x2c; memcpy((void*)0x200000000252, "orlov", 5); *(uint8_t*)0x200000000257 = 0x2c; memcpy((void*)0x200000000258, "nogrpid", 7); *(uint8_t*)0x20000000025f = 0x2c; memcpy((void*)0x200000000260, "noauto_da_alloc", 15); *(uint8_t*)0x20000000026f = 0x2c; memcpy((void*)0x200000000270, "grpjquota=", 10); *(uint8_t*)0x20000000027a = 0x2c; *(uint8_t*)0x20000000027b = 0; memcpy( (void*)0x200000000800, "\x78\x9c\xec\xdd\xdd\x6b\x5b\xe5\x1f\x00\xf0\xef\x49\x9b\xbd\xff\x7e" "\xeb\x60\x0c\xf5\x42\x0a\xbb\x70\x32\x97\xae\xad\x2f\x13\x84\xcd\x4b" "\xd1\xe1\x40\xef\x67\x68\xb3\x32\x9a\x2e\xa3\x49\xc7\x5a\x07\xdb\x2e" "\xdc\x8d\x37\x32\x04\x11\x07\xe2\x1f\xe0\xbd\x97\xc3\x7f\xc0\xbf\x62" "\xa0\x83\x21\xa3\xe8\x85\x17\x56\x4e\x7a\xb2\x65\x79\xe9\x4b\x9a\xd9" "\xcc\x7c\x3e\x70\xb6\xe7\x39\xe7\xa4\xdf\xf3\xe4\x39\xcf\x93\xef\xc9" "\x49\x48\x00\x43\x6b\x3c\xfd\x27\x17\xf1\x72\x44\x7c\x95\x44\x1c\x6e" "\xda\x36\x1a\xd9\xc6\xf1\xf5\xfd\x56\x1f\xdf\x98\x49\x97\x24\xd6\xd6" "\x3e\xf9\x3d\x89\x24\x5b\xd7\xd8\x3f\xc9\xfe\x3f\x98\x55\x5e\x8a\x88" "\x9f\xbf\x88\x38\x99\x6b\x8f\x5b\x5d\x5e\x99\x2f\x96\xcb\xa5\xc5\xac" "\x3e\x51\x5b\xb8\x3a\x51\x5d\x5e\x39\x75\x79\xa1\x38\x57\x9a\x2b\x5d" "\x99\x9a\x9e\x3e\xf3\xd6\xf4\xd4\xbb\xef\xbc\xdd\x63\xcb\xda\x83\xbe" "\x7e\xe1\xcf\x6f\x3f\xbe\xff\xc1\x99\x2f\x8f\xaf\x7e\xf3\xe3\xc3\x23" "\x77\x93\x38\x17\x87\xb2\x6d\x4d\xed\x48\x7a\x0c\x98\xba\xd5\x5c\x19" "\x8f\xf1\xec\x8f\xe5\xe3\x5c\xcb\x8e\x93\x3b\x08\x32\x88\x76\xf2\xa4" "\xb1\x7b\x46\xb2\x71\x9e\x8f\x74\x0e\x38\x1c\x23\xd9\xa8\x07\xfe\xfb" "\x6e\x46\xc4\x1a\x30\x9c\x46\x4c\x00\x30\xac\x1a\x79\x40\xe3\xda\xbe" "\xf9\x7a\x7e\x23\x7f\x37\x3d\xf6\x45\xf6\xe8\xfd\xf5\x0b\xa0\xf6\xf6" "\x8f\xae\xbf\x37\x12\xfb\xea\xd7\x46\x07\x56\x93\x67\xae\x8c\xd2\xeb" "\xdd\xb1\x3e\xc4\x4f\x63\xfc\xf4\xdb\xbd\xbb\xe9\x12\x2d\xef\xa7\xb4" "\xba\xd9\x87\x78\x00\x0d\xb7\x6e\x47\xc4\xe9\xd1\xd1\xf6\xf9\x2f\xc9" "\xe6\xbf\xde\x9d\xee\xf4\x26\x6c\x8b\xd6\x18\x5b\x7d\xfd\x01\x76\xee" "\x7e\x9a\xff\xbc\xd1\x29\xff\xc9\x3d\xc9\x7f\xa2\x43\xfe\x73\xb0\xc3" "\xd8\xed\xc5\xe6\xe3\x3f\xf7\xb0\x0f\x61\xba\x4a\xf3\xbf\xf7\x3a\xe6" "\xbf\x4f\xa6\xae\xb1\x91\xac\xf6\xbf\x7a\xce\x97\x4f\x2e\x5d\x2e\x97" "\x4e\x47\xc4\xff\x23\xe2\x44\xe4\xf7\xa6\xf5\x8d\xee\xe7\x9c\x59\x7d" "\xd0\x35\x57\x6e\xce\xff\xd2\x25\x8d\xdf\xc8\x05\xb3\xe3\x78\x38\xba" "\xf7\xd9\xc7\xcc\x16\x6b\xc5\x9d\xb4\xb9\xd9\xa3\xdb\x11\xaf\x3c\xcd" "\x7f\x93\x68\x9b\xff\xf7\xd5\x73\xdd\xd6\xfe\x4f\x9f\x8f\x0b\x5b\x8c" "\x71\xac\x74\xef\xd5\x6e\xdb\x36\x6f\x7f\xb3\xfe\x67\xc0\x6b\x3f\x44" "\xbc\xd6\xb1\xff\x9f\xde\xd1\x4a\x36\xbe\x3f\x39\x51\x3f\x1f\x26\x1a" "\x67\x45\xbb\x3f\xee\x1c\xfb\xa5\x5b\xfc\xed\xb5\xbf\xff\xd2\xfe\x3f" "\xb0\x71\xfb\xc7\x92\xe6\xfb\xb5\xd5\xed\xc7\xf8\x7e\xdf\x5f\xa5\x6e" "\xdb\x7a\x3d\xff\xf7\x24\x9f\xd6\xcb\x7b\xb2\x75\xd7\x8b\xb5\xda\xe2" "\x64\xc4\x9e\xe4\xa3\xf6\xf5\x53\x4f\x1f\xdb\xa8\x37\xf6\x4f\xdb\x7f" "\xe2\xf8\xc6\xf3\x5f\xa7\xf3\x7f\x7f\x44\x7c\xb6\xc5\xf6\xdf\x39\x7a" "\xa7\xeb\xae\x83\xd0\xff\xb3\xdb\xea\xff\x67\x0a\xf9\xb6\x35\x1d\x0a" "\x0f\x3e\xfc\xfc\xbb\x6e\xf1\xb7\xd6\xff\x6f\xd6\x4b\x27\xb2\x35\x5b" "\x99\xff\xb6\x72\x5c\xbd\x9d\xcd\x00\x00\x00\x00\x00\x00\x30\xb8\x72" "\x11\x71\x28\x92\x5c\xe1\x49\x39\x97\x2b\x14\xd6\x3f\xdf\x71\x34\x0e" "\xe4\xca\x95\x6a\xed\xe4\xa5\xca\xd2\x95\xd9\xa8\x7f\x57\x76\x2c\xf2" "\xb9\xc6\x9d\xee\xc3\x4d\x9f\x87\x98\xcc\x3e\x0f\xdb\xa8\x4f\xb5\xd4" "\xa7\x23\xe2\x48\x44\x7c\x3d\xb2\xbf\x5e\x2f\xcc\x54\xca\xb3\xbb\xdd" "\x78\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18" "\x10\x07\xbb\x7c\xff\x3f\xf5\xeb\xc8\x6e\x1f\x1d\xf0\xdc\xf9\xc9\x6f" "\x18\x5e\x9b\x8e\xff\x7e\xfc\xd2\x13\x30\x90\xbc\xfe\xc3\xf0\x32\xfe" "\x61\x78\x19\xff\x30\xbc\x8c\x7f\x18\x5e\xc6\x3f\x0c\x2f\xe3\x1f\x86" "\x97\xf1\x0f\xc3\xcb\xf8\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\xbe\xba\x70\xfe\x7c\xba" "\xac\xad\x3e\xbe\x31\x93\xd6\x67\xaf\x2d\x2f\xcd\x57\xae\x9d\x9a\x2d" "\x55\xe7\x0b\x0b\x4b\x33\x85\x99\xca\xe2\xd5\xc2\x5c\xa5\x32\x57\x2e" "\x15\x66\x2a\x0b\x9b\xfd\xbd\x72\xa5\x72\x75\x72\x2a\x96\xae\x4f\xd4" "\x4a\xd5\xda\x44\x75\x79\xe5\xe2\x42\x65\xe9\x4a\xed\xe2\xe5\x85\xe2" "\x5c\xe9\x62\x29\xff\xaf\xb4\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x5e\x2c\xd5\xe5\x95\xf9\x62\xb9\x5c\x5a\x54" "\xe8\x5a\x38\x1b\x03\x71\x18\x3d\x17\x92\xcd\x7a\xf9\x6c\x76\x32\xf4" "\x14\x62\x74\xf7\x1b\xa8\xf0\x1c\x0a\xbb\x3c\x31\x01\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\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\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\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\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\x40\x93\x7f" "\x02\x00\x00\xff\xff\x68\x8c\x35\x62", 1403); syz_mount_image(/*fs=*/0x200000000040, /*dir=*/0x2000000007c0, /*flags=MS_RELATIME*/ 0x200000, /*opts=*/0x200000000200, /*chdir=*/3, /*size=*/0x57b, /*img=*/0x200000000800); break; case 2: // bpf$BPF_BTF_LOAD arguments: [ // cmd: const = 0x12 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] // returns fd_btf syscall(__NR_bpf, /*cmd=*/0x12ul, /*arg=*/0ul, /*size=*/0ul); break; case 3: // socket$packet arguments: [ // domain: const = 0x11 (8 bytes) // type: packet_socket_type = 0x3 (8 bytes) // proto: const = 0x300 (4 bytes) // ] // returns sock_packet res = syscall(__NR_socket, /*domain=*/0x11ul, /*type=SOCK_RAW*/ 3ul, /*proto=*/0x300); if (res != -1) r[0] = res; break; case 4: // setsockopt$packet_int arguments: [ // fd: sock_packet (resource) // level: const = 0x107 (4 bytes) // optname: packet_option_types_int = 0xf (4 bytes) // optval: nil // optlen: len = 0x0 (8 bytes) // ] syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x107, /*optname=PACKET_VNET_HDR*/ 0xf, /*optval=*/0ul, /*optlen=*/0ul); break; case 5: // mkdir arguments: [ // path: ptr[in, buffer] { // buffer: {2e 2f 62 75 73 00} (length 0x6) // } // mode: open_mode = 0x11e (8 bytes) // ] memcpy((void*)0x2000000000c0, "./bus\000", 6); syscall(__NR_mkdir, /*path=*/0x2000000000c0ul, /*mode=S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRUSR*/ 0x11eul); break; case 6: // unshare arguments: [ // flags: unshare_flags = 0x2020600 (8 bytes) // ] syscall( __NR_unshare, /*flags=CLONE_NEWNS|CLONE_NEWCGROUP|CLONE_FS|CLONE_FILES*/ 0x2020600ul); break; case 7: // mount$incfs arguments: [ // src: ptr[in, buffer] { // buffer: {2e 00} (length 0x2) // } // dst: ptr[in, buffer] { // buffer: {2e 2f 62 75 73 00} (length 0x6) // } // type: ptr[in, buffer] { // buffer: {69 6e 63 72 65 6d 65 6e 74 61 6c 2d 66 73 00} (length 0xf) // } // flags: mount_flags = 0xc002 (8 bytes) // opts: nil // ] memcpy((void*)0x2000000007c0, ".\000", 2); memcpy((void*)0x200000000800, "./bus\000", 6); memcpy((void*)0x200000000000, "incremental-fs\000", 15); syscall(__NR_mount, /*src=*/0x2000000007c0ul, /*dst=*/0x200000000800ul, /*type=*/0x200000000000ul, /*flags=MS_REC|MS_SILENT|MS_NOSUID*/ 0xc002ul, /*opts=*/0ul); break; case 8: // syz_mount_image$erofs arguments: [ // fs: ptr[in, buffer] { // buffer: {65 72 6f 66 73 00} (length 0x6) // } // dir: ptr[in, buffer] { // buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8) // } // flags: mount_flags = 0x4004 (8 bytes) // opts: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYRESOCT: ANYRES64 (resource) // } // union ANYUNION { // ANYRES16: ANYRES16 (resource) // } // union ANYUNION { // ANYBLOB: buffer: {17 bc 34 35 c5 35 b9 bf d0 cd 02 2e 83 f5 c5 // 54 25 c4 78 ba f4 6d 7c 50 47 da 8a c5 5a 93 28 e4 42 6f 8f 7b // d2 76 f2 08 52 75 3c 6d 5e b2 b4 b7 88 44 0d 75 bb be 45 bb 6f // 84 09 db 0f d6 7c 0b 99 11 71 96 d4 6c a6 fc 48 44 a2 5a 82 54 // 21 e8 56 a8 ec 76 9b 28 e0 0e c1 30 55 47 49 82 39 e8 ca 44 98 // cf 43 2b e2 f8 d6 3f a6 a9 20 84 a8 30 eb 9b 21 a7 c9 78 88 cb // 5f 23 63 a3 c5 6d 94 bd 61 2b 77 69 0f 4b a1 52 01} (length // 0x89) // } // union ANYUNION { // ANYRES16: ANYRES16 (resource) // } // union ANYUNION { // ANYBLOB: buffer: {a7 07 02 83 bc 04 1c ec be 4e 9a a8 b1 7d b6 // b1 0a 1b 2b cd ac 6f c7 d5 54 f2 c5 1b d3 55 6d 13 e6 39 67 4d // 19 8e 00 be 90 bf 46 ae 3f 7f 18 9d cd 04 91 c2 41 ef de a2 a9 // 12 5e 7c 7c 80 8f 24 4c 58 bf 6d 04 c9 e9 ea d4 f8 1a 56 3e f0 // 5a 06 22 ef f7 d1 e3 f7 2b b5 50 14 58 cb 89 fe a7 12 75 c4 5d // 2d 98 d3 20 b1 b3 14 af df 1c} (length 0x6d) // } // union ANYUNION { // ANYRES32: ANYRES32 (resource) // } // union ANYUNION { // ANYRESDEC: ANYRES64 (resource) // } // union ANYUNION { // ANYRESHEX: ANYRES64 (resource) // } // } // } // chdir: int8 = 0x81 (1 bytes) // size: len = 0x1f5 (8 bytes) // img: ptr[in, buffer] { // buffer: (compressed buffer with length 0x1f5) // } // ] // returns fd_dir memcpy((void*)0x200000000140, "erofs\000", 6); memcpy((void*)0x200000000000, "./file1\000", 8); sprintf((char*)0x200000000bc0, "%023llo", (long long)-1); *(uint16_t*)0x200000000bd7 = -1; memcpy((void*)0x200000000bd9, "\x17\xbc\x34\x35\xc5\x35\xb9\xbf\xd0\xcd\x02\x2e\x83\xf5\xc5\x54" "\x25\xc4\x78\xba\xf4\x6d\x7c\x50\x47\xda\x8a\xc5\x5a\x93\x28\xe4" "\x42\x6f\x8f\x7b\xd2\x76\xf2\x08\x52\x75\x3c\x6d\x5e\xb2\xb4\xb7" "\x88\x44\x0d\x75\xbb\xbe\x45\xbb\x6f\x84\x09\xdb\x0f\xd6\x7c\x0b" "\x99\x11\x71\x96\xd4\x6c\xa6\xfc\x48\x44\xa2\x5a\x82\x54\x21\xe8" "\x56\xa8\xec\x76\x9b\x28\xe0\x0e\xc1\x30\x55\x47\x49\x82\x39\xe8" "\xca\x44\x98\xcf\x43\x2b\xe2\xf8\xd6\x3f\xa6\xa9\x20\x84\xa8\x30" "\xeb\x9b\x21\xa7\xc9\x78\x88\xcb\x5f\x23\x63\xa3\xc5\x6d\x94\xbd" "\x61\x2b\x77\x69\x0f\x4b\xa1\x52\x01", 137); *(uint16_t*)0x200000000c62 = -1; memcpy((void*)0x200000000c64, "\xa7\x07\x02\x83\xbc\x04\x1c\xec\xbe\x4e\x9a\xa8\xb1\x7d\xb6\xb1" "\x0a\x1b\x2b\xcd\xac\x6f\xc7\xd5\x54\xf2\xc5\x1b\xd3\x55\x6d\x13" "\xe6\x39\x67\x4d\x19\x8e\x00\xbe\x90\xbf\x46\xae\x3f\x7f\x18\x9d" "\xcd\x04\x91\xc2\x41\xef\xde\xa2\xa9\x12\x5e\x7c\x7c\x80\x8f\x24" "\x4c\x58\xbf\x6d\x04\xc9\xe9\xea\xd4\xf8\x1a\x56\x3e\xf0\x5a\x06" "\x22\xef\xf7\xd1\xe3\xf7\x2b\xb5\x50\x14\x58\xcb\x89\xfe\xa7\x12" "\x75\xc4\x5d\x2d\x98\xd3\x20\xb1\xb3\x14\xaf\xdf\x1c", 109); *(uint32_t*)0x200000000cd1 = -1; sprintf((char*)0x200000000cd5, "%020llu", (long long)-1); sprintf((char*)0x200000000ce9, "0x%016llx", (long long)-1); memcpy( (void*)0x200000000300, "\x78\x9c\xec\x95\xbf\x8b\x13\x41\x14\xc7\xbf\x33\xbb\xee\x26\x72\xa0" "\xb5\x8d\x82\x07\x9e\x85\xfb\x2b\x2a\x36\x07\xb1\xb1\xb2\x10\xfc\x71" "\x58\x08\x06\x6f\xef\x38\xdd\xf3\x24\xd9\xc2\x3b\x10\xf5\x2f\x10\x5b" "\x3b\x0b\xff\x0c\x21\xb6\xfe\x09\x16\x12\x05\x51\x10\x6d\xd4\x7a\x64" "\x7e\xec\xee\x18\x77\x35\xc6\xc4\x14\xbe\x0f\xe4\xcd\x77\xf6\x4d\xde" "\xbc\x79\xb3\xbc\x05\x41\x10\xff\x2d\x6f\xdf\x7c\x1b\x89\xaf\xab\xef" "\x5b\x00\x96\xb0\x0c\xdf\x3c\xff\xe0\x54\x6b\xb8\xb5\xfe\x75\xeb\xf3" "\xbd\x17\xe7\xcf\xad\x3d\xba\xf6\xec\xa5\x3f\x0a\xda\x3f\x46\xf3\x71" "\x40\x8d\x0f\x26\xde\xdf\x05\x30\x3c\xeb\x20\xd7\x53\x4f\x08\x21\x6c" "\xff\xb2\x19\x2f\x81\x97\xfa\x32\x38\x8e\x1b\xbd\x06\x86\xc0\xe8\xeb" "\xe0\xb8\x62\x74\x0a\x86\xab\x46\xdf\xb4\xf4\x8e\x5c\x1f\x04\x1b\x5b" "\x59\x1a\xdc\xd8\xc9\xd6\xa5\x88\xa4\x89\xa5\x49\xa4\xe9\x8c\xe7\xf7" "\xe9\x21\xc3\xba\x99\xcb\xfc\x98\xe5\x1f\xec\xee\xdd\xea\x65\x59\xda" "\x9f\x89\x58\x02\xf0\xb3\xab\xbe\x72\xc3\x8f\x65\x7e\x2d\x60\xd5\xca" "\xcf\xbe\xaf\x00\x3a\xdb\xc8\xaa\x5f\x0c\x8e\xd8\xe8\x0e\x18\x2e\xa2" "\x8b\x23\x00\xce\xc0\x2f\x6a\xa3\x4b\x62\x9d\xff\x90\x8b\x7d\x45\x7c" "\xe7\x97\xe7\xf7\xf0\x97\x85\x78\x07\xa0\x7a\xb2\x31\x9b\xca\xd6\x0b" "\x4f\x6e\x35\xd5\xdf\x01\x36\xc9\xdd\xe3\xa0\x79\x1d\xe7\x79\x8a\xdf" "\x89\x30\xed\x0f\x1e\xbf\xaa\x75\x39\x50\xa2\xb8\xd1\x45\x65\x38\x3f" "\x01\x77\x66\x01\x85\x0f\x2c\xfa\x38\x0d\xe2\x79\x57\xdf\x5f\x99\xea" "\x7d\x3d\xff\xb3\x38\xdd\x06\x97\x67\xc5\x61\xee\xa4\x91\xab\xfe\x29" "\x9e\x32\x1c\xb3\xfa\x93\x0e\xf1\x44\x7d\x6a\xc2\x7c\xfb\x4e\x38\xd8" "\xdd\x3b\xb1\xb5\xdd\xdb\x4c\x37\xd3\xdb\x49\xd2\x39\x1d\x9d\x8c\xa2" "\x53\x49\xa8\x1a\x91\xb6\xf5\x2d\x50\xc5\x6f\xab\xfe\xb4\xbf\x8a\xdf" "\x6e\x5a\xeb\x31\x0f\x77\x7b\x79\xde\x8f\xb5\x2d\xe7\x89\xb6\x75\x1d" "\x97\xab\xfe\xc7\xb1\x72\x54\xf7\x3f\xd9\x4d\xbd\xb1\xb8\x5f\x00\x14" "\x9b\x32\xf3\xe3\x6a\x94\x6a\xc5\xa9\x4d\x86\x35\x1e\x89\x20\x08\xe2" "\x9f\x70\x18\x4c\xf5\x64\xd5\x97\x0b\x61\xbe\x26\xa5\x43\x88\xe4\xc2" "\x82\xf3\x24\x08\x82\x20\x08\x82\x20\x08\x82\x20\x08\x62\x7a\xbe\x07" "\x00\x00\xff\xff\x9e\x17\x57\xe3", 501); syz_mount_image(/*fs=*/0x200000000140, /*dir=*/0x200000000000, /*flags=MS_REC|MS_NODEV*/ 0x4004, /*opts=*/0x200000000bc0, /*chdir=*/0x81, /*size=*/0x1f5, /*img=*/0x200000000300); break; case 9: // io_uring_setup arguments: [ // entries: int32 = 0x423e (4 bytes) // params: ptr[inout, io_uring_params] { // io_uring_params { // sq_entries: int32 = 0x0 (4 bytes) // cq_entries: int32 = 0x6087 (4 bytes) // flags: io_uring_setup_flags = 0x40 (4 bytes) // sq_thread_cpu: int32 = 0x3 (4 bytes) // sq_thread_idle: int32 = 0x161 (4 bytes) // features: int32 = 0x0 (4 bytes) // wq_fd: fd_io_uring (resource) // resv: buffer: {00 00 00 00 00 00 00 00 00 00 00 00} (length 0xc) // sq_off: io_sqring_offsets { // head: int32 = 0x0 (4 bytes) // tail: int32 = 0x0 (4 bytes) // ring_mask: int32 = 0x0 (4 bytes) // ring_entries: int32 = 0x0 (4 bytes) // flags: int32 = 0x0 (4 bytes) // dropped: int32 = 0x0 (4 bytes) // array: int32 = 0x0 (4 bytes) // resv1: int32 = 0x0 (4 bytes) // user_addr: int64 = 0x0 (8 bytes) // } // cq_off: io_cqring_offsets { // head: int32 = 0x0 (4 bytes) // tail: int32 = 0x0 (4 bytes) // ring_mask: int32 = 0x0 (4 bytes) // ring_entries: int32 = 0x0 (4 bytes) // overflow: int32 = 0x0 (4 bytes) // cqes: int32 = 0x0 (4 bytes) // flags: int32 = 0x0 (4 bytes) // resv1: int32 = 0x0 (4 bytes) // user_addr: int64 = 0x0 (8 bytes) // } // } // } // ] // returns fd_io_uring *(uint32_t*)0x2000000000c4 = 0x6087; *(uint32_t*)0x2000000000c8 = 0x40; *(uint32_t*)0x2000000000cc = 3; *(uint32_t*)0x2000000000d0 = 0x161; *(uint32_t*)0x2000000000d8 = -1; memset((void*)0x2000000000dc, 0, 12); syscall(__NR_io_uring_setup, /*entries=*/0x423e, /*params=*/0x2000000000c0ul); break; case 10: // mount$overlay arguments: [ // src: const = 0x0 (8 bytes) // dst: ptr[in, buffer] { // buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8) // } // type: ptr[in, buffer] { // buffer: {6f 76 65 72 6c 61 79 00} (length 0x8) // } // flags: mount_flags = 0x0 (8 bytes) // opts: ptr[in, fs_options[overlay_options]] { // fs_options[overlay_options] { // elems: array[fs_opt_elem[overlay_options]] { // fs_opt_elem[overlay_options] { // elem: union overlay_options { // workdir: fs_opt["workdir", stringnoz[filename]] { // name: buffer: {77 6f 72 6b 64 69 72} (length 0x7) // eq: const = 0x3d (1 bytes) // val: buffer: {2e 2f 62 75 73} (length 0x5) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[overlay_options] { // elem: union overlay_options { // lowerdir: fs_opt["lowerdir", stringnoz[filename]] { // name: buffer: {6c 6f 77 65 72 64 69 72} (length 0x8) // eq: const = 0x3d (1 bytes) // val: buffer: {2e} (length 0x1) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[overlay_options] { // elem: union overlay_options { // upperdir: fs_opt["upperdir", stringnoz[filename]] { // name: buffer: {75 70 70 65 72 64 69 72} (length 0x8) // eq: const = 0x3d (1 bytes) // val: buffer: {2e 2f 66 69 6c 65 30} (length 0x7) // } // } // comma: const = 0x2c (1 bytes) // } // } // common: array[fs_opt_elem[fs_options_common]] { // } // null: const = 0x0 (1 bytes) // } // } // ] memcpy((void*)0x200000000040, "./file0\000", 8); memcpy((void*)0x200000000b80, "overlay\000", 8); memcpy((void*)0x200000000180, "workdir", 7); *(uint8_t*)0x200000000187 = 0x3d; memcpy((void*)0x200000000188, "./bus", 5); *(uint8_t*)0x20000000018d = 0x2c; memcpy((void*)0x20000000018e, "lowerdir", 8); *(uint8_t*)0x200000000196 = 0x3d; memset((void*)0x200000000197, 46, 1); *(uint8_t*)0x200000000198 = 0x2c; memcpy((void*)0x200000000199, "upperdir", 8); *(uint8_t*)0x2000000001a1 = 0x3d; memcpy((void*)0x2000000001a2, "./file0", 7); *(uint8_t*)0x2000000001a9 = 0x2c; *(uint8_t*)0x2000000001aa = 0; syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200000000040ul, /*type=*/0x200000000b80ul, /*flags=*/0ul, /*opts=*/0x200000000180ul); break; } } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }