map[SimplifiedCRepro:// autogenerated by syzkaller (https://github.com/google/syzkaller)
#define _GNU_SOURCE
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>
#include <linux/loop.h>
#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif
static unsigned long long procid;
//% 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 FUSE_MIN_READ_BUFFER 8192
enum fuse_opcode {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2,
FUSE_GETATTR = 3,
FUSE_SETATTR = 4,
FUSE_READLINK = 5,
FUSE_SYMLINK = 6,
FUSE_MKNOD = 8,
FUSE_MKDIR = 9,
FUSE_UNLINK = 10,
FUSE_RMDIR = 11,
FUSE_RENAME = 12,
FUSE_LINK = 13,
FUSE_OPEN = 14,
FUSE_READ = 15,
FUSE_WRITE = 16,
FUSE_STATFS = 17,
FUSE_RELEASE = 18,
FUSE_FSYNC = 20,
FUSE_SETXATTR = 21,
FUSE_GETXATTR = 22,
FUSE_LISTXATTR = 23,
FUSE_REMOVEXATTR = 24,
FUSE_FLUSH = 25,
FUSE_INIT = 26,
FUSE_OPENDIR = 27,
FUSE_READDIR = 28,
FUSE_RELEASEDIR = 29,
FUSE_FSYNCDIR = 30,
FUSE_GETLK = 31,
FUSE_SETLK = 32,
FUSE_SETLKW = 33,
FUSE_ACCESS = 34,
FUSE_CREATE = 35,
FUSE_INTERRUPT = 36,
FUSE_BMAP = 37,
FUSE_DESTROY = 38,
FUSE_IOCTL = 39,
FUSE_POLL = 40,
FUSE_NOTIFY_REPLY = 41,
FUSE_BATCH_FORGET = 42,
FUSE_FALLOCATE = 43,
FUSE_READDIRPLUS = 44,
FUSE_RENAME2 = 45,
FUSE_LSEEK = 46,
FUSE_COPY_FILE_RANGE = 47,
FUSE_SETUPMAPPING = 48,
FUSE_REMOVEMAPPING = 49,
FUSE_SYNCFS = 50,
FUSE_TMPFILE = 51,
FUSE_STATX = 52,
CUSE_INIT = 4096,
CUSE_INIT_BSWAP_RESERVED = 1048576,
FUSE_INIT_BSWAP_RESERVED = 436207616,
};
struct fuse_in_header {
uint32_t len;
uint32_t opcode;
uint64_t unique;
uint64_t nodeid;
uint32_t uid;
uint32_t gid;
uint32_t pid;
uint32_t padding;
};
struct fuse_out_header {
uint32_t len;
uint32_t error;
uint64_t unique;
};
struct syz_fuse_req_out {
struct fuse_out_header* init;
struct fuse_out_header* lseek;
struct fuse_out_header* bmap;
struct fuse_out_header* poll;
struct fuse_out_header* getxattr;
struct fuse_out_header* lk;
struct fuse_out_header* statfs;
struct fuse_out_header* write;
struct fuse_out_header* read;
struct fuse_out_header* open;
struct fuse_out_header* attr;
struct fuse_out_header* entry;
struct fuse_out_header* dirent;
struct fuse_out_header* direntplus;
struct fuse_out_header* create_open;
struct fuse_out_header* ioctl;
struct fuse_out_header* statx;
};
static int fuse_send_response(int fd,
const struct fuse_in_header* in_hdr,
struct fuse_out_header* out_hdr)
{
if (!out_hdr) {
return -1;
}
out_hdr->unique = in_hdr->unique;
if (write(fd, out_hdr, out_hdr->len) == -1) {
return -1;
}
return 0;
}
static volatile long syz_fuse_handle_req(volatile long a0,
volatile long a1,
volatile long a2,
volatile long a3)
{
struct syz_fuse_req_out* req_out = (struct syz_fuse_req_out*)a3;
struct fuse_out_header* out_hdr = NULL;
char* buf = (char*)a1;
int buf_len = (int)a2;
int fd = (int)a0;
if (!req_out) {
return -1;
}
if (buf_len < FUSE_MIN_READ_BUFFER) {
return -1;
}
int ret = read(fd, buf, buf_len);
if (ret == -1) {
return -1;
}
if ((size_t)ret < sizeof(struct fuse_in_header)) {
return -1;
}
const struct fuse_in_header* in_hdr = (const struct fuse_in_header*)buf;
if (in_hdr->len > (uint32_t)ret) {
return -1;
}
switch (in_hdr->opcode) {
case FUSE_GETATTR:
case FUSE_SETATTR:
out_hdr = req_out->attr;
break;
case FUSE_LOOKUP:
case FUSE_SYMLINK:
case FUSE_LINK:
case FUSE_MKNOD:
case FUSE_MKDIR:
out_hdr = req_out->entry;
break;
case FUSE_OPEN:
case FUSE_OPENDIR:
out_hdr = req_out->open;
break;
case FUSE_STATFS:
out_hdr = req_out->statfs;
break;
case FUSE_RMDIR:
case FUSE_RENAME:
case FUSE_RENAME2:
case FUSE_FALLOCATE:
case FUSE_SETXATTR:
case FUSE_REMOVEXATTR:
case FUSE_FSYNCDIR:
case FUSE_FSYNC:
case FUSE_SETLKW:
case FUSE_SETLK:
case FUSE_ACCESS:
case FUSE_FLUSH:
case FUSE_RELEASE:
case FUSE_RELEASEDIR:
case FUSE_UNLINK:
case FUSE_DESTROY:
out_hdr = req_out->init;
if (!out_hdr) {
return -1;
}
out_hdr->len = sizeof(struct fuse_out_header);
break;
case FUSE_READ:
out_hdr = req_out->read;
break;
case FUSE_READDIR:
out_hdr = req_out->dirent;
break;
case FUSE_READDIRPLUS:
out_hdr = req_out->direntplus;
break;
case FUSE_INIT:
out_hdr = req_out->init;
break;
case FUSE_LSEEK:
out_hdr = req_out->lseek;
break;
case FUSE_GETLK:
out_hdr = req_out->lk;
break;
case FUSE_BMAP:
out_hdr = req_out->bmap;
break;
case FUSE_POLL:
out_hdr = req_out->poll;
break;
case FUSE_GETXATTR:
case FUSE_LISTXATTR:
out_hdr = req_out->getxattr;
break;
case FUSE_WRITE:
case FUSE_COPY_FILE_RANGE:
out_hdr = req_out->write;
break;
case FUSE_FORGET:
case FUSE_BATCH_FORGET:
return 0;
case FUSE_CREATE:
out_hdr = req_out->create_open;
break;
case FUSE_IOCTL:
out_hdr = req_out->ioctl;
break;
case FUSE_STATX:
out_hdr = req_out->statx;
break;
default:
return -1;
}
return fuse_send_response(fd, in_hdr, out_hdr);
}
uint64_t r[2] = {0xffffffffffffffff, 0x0};
int main(void)
{
syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul);
syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, /*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=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul);
const char* reason;
(void)reason;
intptr_t res = 0;
if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {}
// mkdirat arguments: [
// fd: fd_dir (resource)
// path: ptr[in, buffer] {
// buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
// }
// mode: open_mode = 0x0 (8 bytes)
// ]
memcpy((void*)0x200000002040, "./file0\000", 8);
syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000002040ul, /*mode=*/0ul);
// openat$fuse arguments: [
// fd: const = 0xffffffffffffff9c (8 bytes)
// file: ptr[in, buffer] {
// buffer: {2f 64 65 76 2f 66 75 73 65 00} (length 0xa)
// }
// flags: const = 0x42 (4 bytes)
// mode: const = 0x0 (2 bytes)
// ]
// returns fd_fuse
memcpy((void*)0x200000000040, "/dev/fuse\000", 10);
res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000040ul, /*flags=*/0x42, /*mode=*/0);
if (res != -1)
r[0] = res;
// mount$fuse 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: {66 75 73 65 00} (length 0x5)
// }
// flags: mount_flags = 0x0 (8 bytes)
// opts: ptr[in, fuse_options] {
// fuse_options {
// fd: fs_opt["fd", fmt[hex, fd_fuse]] {
// name: buffer: {66 64} (length 0x2)
// eq: const = 0x3d (1 bytes)
// val: fd_fuse (resource)
// }
// comma0: const = 0x2c (1 bytes)
// rootmode: fs_opt["rootmode", fmt[oct, flags[fuse_mode]]] {
// name: buffer: {72 6f 6f 74 6d 6f 64 65} (length 0x8)
// eq: const = 0x3d (1 bytes)
// val: fuse_mode = 0x4000 (23 bytes)
// }
// comma1: const = 0x2c (1 bytes)
// user_id: fs_opt["user_id", fmt[dec, uid]] {
// name: buffer: {75 73 65 72 5f 69 64} (length 0x7)
// eq: const = 0x3d (1 bytes)
// val: uid (resource)
// }
// comma2: const = 0x2c (1 bytes)
// group_id: fs_opt["group_id", fmt[dec, gid]] {
// name: buffer: {67 72 6f 75 70 5f 69 64} (length 0x8)
// eq: const = 0x3d (1 bytes)
// val: gid (resource)
// }
// comma3: const = 0x2c (1 bytes)
// opts: fs_options[fuse_opts] {
// elems: array[fs_opt_elem[fuse_opts]] {
// }
// common: array[fs_opt_elem[fs_options_common]] {
// }
// null: const = 0x0 (1 bytes)
// }
// }
// }
// ]
memcpy((void*)0x200000000000, "./file0\000", 8);
memcpy((void*)0x200000002100, "fuse\000", 5);
memcpy((void*)0x200000002140, "fd", 2);
*(uint8_t*)0x200000002142 = 0x3d;
sprintf((char*)0x200000002143, "0x%016llx", (long long)r[0]);
*(uint8_t*)0x200000002155 = 0x2c;
memcpy((void*)0x200000002156, "rootmode", 8);
*(uint8_t*)0x20000000215e = 0x3d;
sprintf((char*)0x20000000215f, "%023llo", (long long)0x4000);
*(uint8_t*)0x200000002176 = 0x2c;
memcpy((void*)0x200000002177, "user_id", 7);
*(uint8_t*)0x20000000217e = 0x3d;
sprintf((char*)0x20000000217f, "%020llu", (long long)0);
*(uint8_t*)0x200000002193 = 0x2c;
memcpy((void*)0x200000002194, "group_id", 8);
*(uint8_t*)0x20000000219c = 0x3d;
sprintf((char*)0x20000000219d, "%020llu", (long long)0);
*(uint8_t*)0x2000000021b1 = 0x2c;
*(uint8_t*)0x2000000021b2 = 0;
syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200000000000ul, /*type=*/0x200000002100ul, /*flags=*/0ul, /*opts=*/0x200000002140ul);
// pivot_root arguments: [
// new_root: ptr[in, buffer] {
// buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
// }
// put_old: ptr[in, buffer] {
// buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
// }
// ]
memcpy((void*)0x200000000100, "./file0\000", 8);
memcpy((void*)0x200000000140, "./file0\000", 8);
syscall(__NR_pivot_root, /*new_root=*/0x200000000100ul, /*put_old=*/0x200000000140ul);
// read$FUSE arguments: [
// fd: fd_fuse (resource)
// buf: ptr[out, fuse_in[read_buffer]] {
// fuse_in[read_buffer] {
// len: len = 0x2020 (4 bytes)
// opcode: int32 = 0x0 (4 bytes)
// unique: fuse_unique (resource)
// uid: uid (resource)
// gid: gid (resource)
// pid: pid (resource)
// padding: int32 = 0x0 (4 bytes)
// payload: buffer: (DirOut)
// }
// }
// len: bytesize = 0x2020 (8 bytes)
// ]
res = syscall(__NR_read, /*fd=*/r[0], /*buf=*/0x2000000077c0ul, /*len=*/0x2020ul);
if (res != -1)
r[1] = *(uint64_t*)0x2000000077c8;
// write$FUSE_INIT arguments: [
// fd: fd_fuse (resource)
// arg: ptr[in, fuse_out_t[fuse_unique, fuse_init_out]] {
// fuse_out_t[fuse_unique, fuse_init_out] {
// len: len = 0x50 (4 bytes)
// err: fuse_errors = 0x0 (4 bytes)
// unique: fuse_unique (resource)
// payload: fuse_init_out {
// major: const = 0x7 (4 bytes)
// minor: const = 0x1f (4 bytes)
// max_readahead: int32 = 0x0 (4 bytes)
// flags: fuse_init_flags = 0x0 (4 bytes)
// max_background: int16 = 0x0 (2 bytes)
// congestion_threshold: int16 = 0x0 (2 bytes)
// max_write: int32 = 0x0 (4 bytes)
// time_gran: int32 = 0x0 (4 bytes)
// max_pages: const = 0x0 (2 bytes)
// map_alignment: const = 0x0 (2 bytes)
// flags2: fuse_init_flags2 = 0x0 (4 bytes)
// max_stack_depth: int32 = 0x0 (4 bytes)
// unused: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x18)
// }
// }
// }
// len: bytesize = 0x50 (8 bytes)
// ]
*(uint32_t*)0x200000004200 = 0x50;
*(uint32_t*)0x200000004204 = 0;
*(uint64_t*)0x200000004208 = r[1];
*(uint32_t*)0x200000004210 = 7;
*(uint32_t*)0x200000004214 = 0x1f;
*(uint32_t*)0x200000004218 = 0;
*(uint32_t*)0x20000000421c = 0;
*(uint16_t*)0x200000004220 = 0;
*(uint16_t*)0x200000004222 = 0;
*(uint32_t*)0x200000004224 = 0;
*(uint32_t*)0x200000004228 = 0;
*(uint16_t*)0x20000000422c = 0;
*(uint16_t*)0x20000000422e = 0;
*(uint32_t*)0x200000004230 = 0;
*(uint32_t*)0x200000004234 = 0;
memset((void*)0x200000004238, 0, 24);
syscall(__NR_write, /*fd=*/r[0], /*arg=*/0x200000004200ul, /*len=*/0x50ul);
// syz_fuse_handle_req arguments: [
// fd: fd_fuse (resource)
// buf: ptr[in, buffer] {
// buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x2000)
// }
// len: bytesize = 0x2000 (8 bytes)
// res: ptr[in, syz_fuse_req_out] {
// syz_fuse_req_out {
// init: nil
// lseek: nil
// bmap: nil
// poll: nil
// getxattr: nil
// lk: nil
// statfs: nil
// write: nil
// read: nil
// open: nil
// attr: nil
// entry: nil
// dirent: nil
// direntplus: nil
// create_open: nil
// ioctl: nil
// statx: ptr[in, fuse_out_t[int64, fuse_statx_out]] {
// fuse_out_t[int64, fuse_statx_out] {
// len: len = 0x0 (4 bytes)
// err: fuse_errors = 0x0 (4 bytes)
// unique: int64 = 0x0 (8 bytes)
// payload: fuse_statx_out {
// attr_valid: int64 = 0x0 (8 bytes)
// attr_valid_nsec: int32 = 0x0 (4 bytes)
// flags: const = 0x0 (4 bytes)
// spare: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x10)
// stat: fuse_statx {
// mask: fuse_statx_masx = 0x0 (4 bytes)
// blksize: int32 = 0x0 (4 bytes)
// attributes: int64 = 0x0 (8 bytes)
// nlink: int32 = 0x0 (4 bytes)
// uid: uid (resource)
// gid: gid (resource)
// mode: fuse_valid_type = 0x0 (2 bytes)
// __spare0: buffer: {00 00} (length 0x2)
// ino: int64 = 0x0 (8 bytes)
// size: int64 = 0x0 (8 bytes)
// blocks: int64 = 0x0 (8 bytes)
// attributes_mask: int64 = 0x0 (8 bytes)
// atime: fuse_sx_time {
// tv_sec: int64 = 0x0 (8 bytes)
// tv_nsec: int32 = 0x0 (4 bytes)
// __reserved: const = 0x0 (4 bytes)
// }
// btime: fuse_sx_time {
// tv_sec: int64 = 0x0 (8 bytes)
// tv_nsec: int32 = 0x0 (4 bytes)
// __reserved: const = 0x0 (4 bytes)
// }
// ctime: fuse_sx_time {
// tv_sec: int64 = 0x0 (8 bytes)
// tv_nsec: int32 = 0x0 (4 bytes)
// __reserved: const = 0x0 (4 bytes)
// }
// mtime: fuse_sx_time {
// tv_sec: int64 = 0x0 (8 bytes)
// tv_nsec: int32 = 0x0 (4 bytes)
// __reserved: const = 0x0 (4 bytes)
// }
// rdev_major: int32 = 0x0 (4 bytes)
// rdev_minor: int32 = 0x0 (4 bytes)
// dev_major: int32 = 0x0 (4 bytes)
// dev_minor: int32 = 0x0 (4 bytes)
// __spare2: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x70)
// }
// }
// }
// }
// }
// }
// ]
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0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 8192);
*(uint64_t*)0x2000000062c0 = 0;
*(uint64_t*)0x2000000062c8 = 0;
*(uint64_t*)0x2000000062d0 = 0;
*(uint64_t*)0x2000000062d8 = 0;
*(uint64_t*)0x2000000062e0 = 0;
*(uint64_t*)0x2000000062e8 = 0;
*(uint64_t*)0x2000000062f0 = 0;
*(uint64_t*)0x2000000062f8 = 0;
*(uint64_t*)0x200000006300 = 0;
*(uint64_t*)0x200000006308 = 0;
*(uint64_t*)0x200000006310 = 0;
*(uint64_t*)0x200000006318 = 0;
*(uint64_t*)0x200000006320 = 0;
*(uint64_t*)0x200000006328 = 0;
*(uint64_t*)0x200000006330 = 0;
*(uint64_t*)0x200000006338 = 0;
*(uint64_t*)0x200000006340 = 0x200000000000;
*(uint32_t*)0x200000000000 = 0;
*(uint32_t*)0x200000000004 = 0;
*(uint64_t*)0x200000000008 = 0;
*(uint64_t*)0x200000000010 = 0;
*(uint32_t*)0x200000000018 = 0;
*(uint32_t*)0x20000000001c = 0;
memset((void*)0x200000000020, 0, 16);
*(uint32_t*)0x200000000030 = 0;
*(uint32_t*)0x200000000034 = 0;
*(uint64_t*)0x200000000038 = 0;
*(uint32_t*)0x200000000040 = 0;
*(uint32_t*)0x200000000044 = 0;
*(uint32_t*)0x200000000048 = 0;
*(uint16_t*)0x20000000004c = 0;
memset((void*)0x20000000004e, 0, 2);
*(uint64_t*)0x200000000050 = 0;
*(uint64_t*)0x200000000058 = 0;
*(uint64_t*)0x200000000060 = 0;
*(uint64_t*)0x200000000068 = 0;
*(uint64_t*)0x200000000070 = 0;
*(uint32_t*)0x200000000078 = 0;
*(uint32_t*)0x20000000007c = 0;
*(uint64_t*)0x200000000080 = 0;
*(uint32_t*)0x200000000088 = 0;
*(uint32_t*)0x20000000008c = 0;
*(uint64_t*)0x200000000090 = 0;
*(uint32_t*)0x200000000098 = 0;
*(uint32_t*)0x20000000009c = 0;
*(uint64_t*)0x2000000000a0 = 0;
*(uint32_t*)0x2000000000a8 = 0;
*(uint32_t*)0x2000000000ac = 0;
*(uint32_t*)0x2000000000b0 = 0;
*(uint32_t*)0x2000000000b4 = 0;
*(uint32_t*)0x2000000000b8 = 0;
*(uint32_t*)0x2000000000bc = 0;
memset((void*)0x2000000000c0, 0, 112);
syz_fuse_handle_req(/*fd=*/r[0], /*buf=*/0x2000000042c0, /*len=*/0x2000, /*res=*/0x2000000062c0);
// 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 30 00} (length 0x8)
// }
// flags: mount_flags = 0x0 (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 {
// inode_readahead_blks: fs_opt["inode_readahead_blks", fmt[hex, flags[ext4_inode_readahead_blks]]] {
// name: buffer: {69 6e 6f 64 65 5f 72 65 61 64 61 68 65 61 64 5f 62 6c 6b 73} (length 0x14)
// eq: const = 0x3d (1 bytes)
// val: ext4_inode_readahead_blks = 0x0 (18 bytes)
// }
// }
// comma: const = 0x2c (1 bytes)
// }
// fs_opt_elem[ext4_options] {
// elem: union ext4_options {
// auto_da_alloc: buffer: {61 75 74 6f 5f 64 61 5f 61 6c 6c 6f 63} (length 0xd)
// }
// 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 = 0x66 (18 bytes)
// }
// }
// comma: const = 0x2c (1 bytes)
// }
// fs_opt_elem[ext4_options] {
// elem: union ext4_options {
// dioread_nolock: buffer: {64 69 6f 72 65 61 64 5f 6e 6f 6c 6f 63 6b} (length 0xe)
// }
// comma: const = 0x2c (1 bytes)
// }
// fs_opt_elem[ext4_options] {
// elem: union ext4_options {
// nobh: buffer: {6e 6f 62 68} (length 0x4)
// }
// comma: const = 0x2c (1 bytes)
// }
// fs_opt_elem[ext4_options] {
// elem: union ext4_options {
// quota: buffer: {71 75 6f 74 61} (length 0x5)
// }
// comma: const = 0x2c (1 bytes)
// }
// }
// common: array[fs_opt_elem[fs_options_common]] {
// }
// null: const = 0x0 (1 bytes)
// }
// }
// chdir: int8 = 0x0 (1 bytes)
// size: len = 0x42d (8 bytes)
// img: ptr[in, buffer] {
// buffer: (compressed buffer with length 0x42d)
// }
// ]
// returns fd_dir
memcpy((void*)0x200000000440, "ext4\000", 5);
memcpy((void*)0x200000000480, "./file0\000", 8);
memcpy((void*)0x200000000080, "inode_readahead_blks", 20);
*(uint8_t*)0x200000000094 = 0x3d;
sprintf((char*)0x200000000095, "0x%016llx", (long long)0);
*(uint8_t*)0x2000000000a7 = 0x2c;
memcpy((void*)0x2000000000a8, "auto_da_alloc", 13);
*(uint8_t*)0x2000000000b5 = 0x2c;
memcpy((void*)0x2000000000b6, "debug_want_extra_isize", 22);
*(uint8_t*)0x2000000000cc = 0x3d;
sprintf((char*)0x2000000000cd, "0x%016llx", (long long)0x66);
*(uint8_t*)0x2000000000df = 0x2c;
memcpy((void*)0x2000000000e0, "dioread_nolock", 14);
*(uint8_t*)0x2000000000ee = 0x2c;
memcpy((void*)0x2000000000ef, "nobh", 4);
*(uint8_t*)0x2000000000f3 = 0x2c;
memcpy((void*)0x2000000000f4, "quota", 5);
*(uint8_t*)0x2000000000f9 = 0x2c;
*(uint8_t*)0x2000000000fa = 0;
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syz_mount_image(/*fs=*/0x200000000440, /*dir=*/0x200000000480, /*flags=*/0, /*opts=*/0x200000000080, /*chdir=*/0, /*size=*/0x42d, /*img=*/0x2000000004c0);
return 0;
}
]