// https://syzkaller.appspot.com/bug?id=912f79b933915aba2231d0d06cea541ee0b211a2 // 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 #include #include #include #include #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif static unsigned long long procid; static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { int state; } event_t; static void event_init(event_t* ev) { ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { if (ev->state) exit(1); __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); } static void event_wait(event_t* ev) { while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); } static int event_isset(event_t* ev) { return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; for (;;) { uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) return 1; now = current_time_ms(); if (now - start > timeout) return 0; } } static bool write_file(const char* file, const char* what, ...) { char buf[1024]; va_list args; va_start(args, what); vsnprintf(buf, sizeof(buf), what, args); va_end(args); buf[sizeof(buf) - 1] = 0; int len = strlen(buf); int fd = open(file, O_WRONLY | O_CLOEXEC); if (fd == -1) return false; if (write(fd, buf, len) != len) { int err = errno; close(fd); errno = err; return false; } close(fd); return true; } #define MAX_FDS 30 //% 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, destlen); } static int setup_loop_device(unsigned char* data, unsigned long size, const char* loopname, int* loopfd_p) { int err = 0, loopfd = -1; int memfd = syscall(__NR_memfd_create, "syzkaller", 0); if (memfd == -1) { err = errno; goto error; } if (puff_zlib_to_file(data, size, memfd)) { err = errno; goto error_close_memfd; } loopfd = open(loopname, O_RDWR); if (loopfd == -1) { err = errno; goto error_close_memfd; } if (ioctl(loopfd, LOOP_SET_FD, memfd)) { if (errno != EBUSY) { err = errno; goto error_close_loop; } ioctl(loopfd, LOOP_CLR_FD, 0); usleep(1000); if (ioctl(loopfd, LOOP_SET_FD, memfd)) { err = errno; goto error_close_loop; } } close(memfd); *loopfd_p = loopfd; return 0; error_close_loop: close(loopfd); error_close_memfd: close(memfd); error: errno = err; return -1; } static long syz_mount_image(volatile long fsarg, volatile long dir, volatile long flags, volatile long optsarg, volatile long change_dir, volatile unsigned long size, volatile long image) { unsigned char* data = (unsigned char*)image; int res = -1, err = 0, loopfd = -1, need_loop_device = !!size; char* mount_opts = (char*)optsarg; char* target = (char*)dir; char* fs = (char*)fsarg; char* source = NULL; char loopname[64]; if (need_loop_device) { memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; source = loopname; } mkdir(target, 0777); char opts[256]; memset(opts, 0, sizeof(opts)); if (strlen(mount_opts) > (sizeof(opts) - 32)) { } strncpy(opts, mount_opts, sizeof(opts) - 32); if (strcmp(fs, "iso9660") == 0) { flags |= MS_RDONLY; } else if (strncmp(fs, "ext", 3) == 0) { 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) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } errno = err; return res; } static void setup_common() { if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { } } static void setup_binderfs() { if (mkdir("/dev/binderfs", 0777)) { } if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) { } if (symlink("/dev/binderfs", "./binderfs")) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setsid(); struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = (200 << 20); setrlimit(RLIMIT_AS, &rlim); rlim.rlim_cur = rlim.rlim_max = 32 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 136 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 128 << 20; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); if (unshare(CLONE_NEWNS)) { } if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) { } if (unshare(CLONE_NEWIPC)) { } if (unshare(0x02000000)) { } if (unshare(CLONE_NEWUTS)) { } if (unshare(CLONE_SYSVSEM)) { } typedef struct { const char* name; const char* value; } sysctl_t; static const sysctl_t sysctls[] = { {"/proc/sys/kernel/shmmax", "16777216"}, {"/proc/sys/kernel/shmall", "536870912"}, {"/proc/sys/kernel/shmmni", "1024"}, {"/proc/sys/kernel/msgmax", "8192"}, {"/proc/sys/kernel/msgmni", "1024"}, {"/proc/sys/kernel/msgmnb", "1024"}, {"/proc/sys/kernel/sem", "1024 1048576 500 1024"}, }; unsigned i; for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++) write_file(sysctls[i].name, sysctls[i].value); } static int wait_for_loop(int pid) { if (pid < 0) exit(1); int status = 0; while (waitpid(-1, &status, __WALL) != pid) { } return WEXITSTATUS(status); } static void drop_caps(void) { struct __user_cap_header_struct cap_hdr = {}; struct __user_cap_data_struct cap_data[2] = {}; cap_hdr.version = _LINUX_CAPABILITY_VERSION_3; cap_hdr.pid = getpid(); if (syscall(SYS_capget, &cap_hdr, &cap_data)) exit(1); const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE); cap_data[0].effective &= ~drop; cap_data[0].permitted &= ~drop; cap_data[0].inheritable &= ~drop; if (syscall(SYS_capset, &cap_hdr, &cap_data)) exit(1); } static int do_sandbox_none(void) { if (unshare(CLONE_NEWPID)) { } int pid = fork(); if (pid != 0) return wait_for_loop(pid); setup_common(); sandbox_common(); drop_caps(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); setup_binderfs(); loop(); 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"); } static void close_fds() { for (int fd = 3; fd < MAX_FDS; fd++) close(fd); } #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, 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; }; 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; default: return -1; } return fuse_send_response(fd, in_hdr, out_hdr); } 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 < 6; 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); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); close_fds(); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { reset_loop(); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { setup_test(); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[4] = {0xffffffffffffffff, 0x0, 0x0, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000440, "/dev/fuse\000", 10); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000440ul, /*flags=*/2ul, /*mode=*/0ul); if (res != -1) r[0] = res; break; case 1: memcpy((void*)0x20000240, "fuse\000", 5); memcpy((void*)0x20000400, "./file0\000", 8); memcpy((void*)0x20002740, "fd", 2); *(uint8_t*)0x20002742 = 0x3d; sprintf((char*)0x20002743, "0x%016llx", (long long)r[0]); *(uint8_t*)0x20002755 = 0x2c; memcpy((void*)0x20002756, "rootmode", 8); *(uint8_t*)0x2000275e = 0x3d; sprintf((char*)0x2000275f, "%023llo", (long long)0x4000); *(uint8_t*)0x20002776 = 0x2c; memcpy((void*)0x20002777, "user_id", 7); *(uint8_t*)0x2000277e = 0x3d; sprintf((char*)0x2000277f, "%020llu", (long long)0); *(uint8_t*)0x20002793 = 0x2c; memcpy((void*)0x20002794, "group_id", 8); *(uint8_t*)0x2000279c = 0x3d; sprintf((char*)0x2000279d, "%020llu", (long long)0); *(uint8_t*)0x200027b1 = 0x2c; *(uint8_t*)0x200027b2 = 0; syz_mount_image(/*fs=*/0x20000240, /*dir=*/0x20000400, /*flags=*/0, /*opts=*/0x20002740, /*chdir=*/0, /*size=*/0, /*img=*/0); break; case 2: res = syscall(__NR_read, /*fd=*/r[0], /*buf=*/0x200027c0ul, /*len=*/0x2020ul); if (res != -1) { r[1] = *(uint64_t*)0x200027c8; r[2] = *(uint32_t*)0x200027d0; r[3] = *(uint32_t*)0x200027d4; } break; case 3: memcpy( (void*)0x20004800, "\x69\x1e\x4b\x19\x8a\x6a\x24\x9f\x31\xea\xed\x11\xe2\x17\xec\x2c\x06" "\xe0\x75\xcf\x70\x2f\xdd\x65\xc7\x4b\x75\x1c\x8a\xa8\x91\x9d\xb8\x50" "\xcf\x0c\x01\x53\x17\x40\x1e\x02\xb1\xa0\x55\xa7\xe2\xc8\xf0\xce\xc4" "\x70\x70\x02\x5d\x89\xf2\x83\x8f\x78\x09\xe2\x8e\xf8\x8c\x4e\xfe\x26" "\x92\x5f\x0e\xd6\x55\xb3\x2b\x35\x04\x0a\x41\xcf\x8a\x8a\xf3\x82\x69" "\x1f\xfb\xd0\xaf\xe7\x46\xb0\xf6\x4f\xb0\xd6\xc0\x5e\x14\xa9\x9e\x11" "\x0b\xd9\xca\x78\x17\x70\x07\xd8\xdc\x15\x37\x90\x16\xd7\x62\x10\x5f" "\x0e\xe7\xd8\x61\x0a\x6a\x67\xce\x8f\x05\xf4\xca\xa1\x81\x9e\x37\x23" "\x68\x2f\x49\xc7\x86\x3b\xda\xf0\xee\xbd\x8e\x31\x9a\xcb\x03\xa3\xf1" "\xea\x3e\xa0\xf3\xf6\x26\x79\x40\x9c\xac\xb1\x03\x43\x70\x0d\xe9\x64" "\x97\xe6\xee\x68\x6a\x9d\xc2\xbb\x2f\x8a\x61\x36\xae\xcb\xb7\x58\x23" "\xc1\x5f\x4c\x8a\x83\xd7\xd3\xfc\x12\xd1\xc6\x56\x9a\x71\x07\x58\x5a" "\xb5\x6c\xed\x9d\x0c\x56\x5e\x2d\xf9\x7d\xcc\x2a\xda\xcd\x15\xd3\x9e" "\x62\xc6\xf2\x40\xdf\x01\x1e\xd1\xf2\x55\x98\x67\x7c\x05\x7b\xd7\xd3" "\x50\x20\xb1\xe5\x7d\xdc\x80\x10\xe9\x33\xf3\xbf\xdb\x1a\x15\xf1\x5d" "\x00\x76\x1f\x89\x26\x7b\x83\xd6\x59\x92\x64\x85\xfc\x8e\xe5\xd2\x3b" "\x2d\xdc\x09\x66\x02\xe1\x17\xc4\x8b\xc6\x11\x26\x05\x90\x66\x21\xc5" "\xf9\x8d\x23\x3f\xb5\x76\xab\xec\xd0\xe7\x0a\xfc\x8b\x6f\xd2\xa4\x38" "\xb0\x4e\xb2\xae\x82\x42\xae\x60\x9c\xed\x14\x40\xe9\xb5\xc5\x9e\x2e" "\x32\xf8\x85\x22\x2f\x7a\x3d\x85\x8d\xa8\x6a\x4d\x6c\x28\x37\xc9\xe1" "\xe2\x5c\xea\xea\x47\xc0\x14\x10\xd3\xb7\x8b\x89\xcc\xe5\xd6\xb1\xbf" "\xb0\x0f\x40\xa9\x91\x0c\xe5\x4b\x15\xa8\x67\xb6\xf3\x7a\xf3\x6c\x94" "\xc4\xb3\x84\xb7\x3d\x6c\x5e\xf3\xce\xf8\x25\x20\x6e\xef\x16\x1f\xa0" "\x67\xb8\x1e\xca\xdd\xad\xff\x81\x41\xb2\x7b\x9c\xc2\x0f\x2d\x44\x98" "\x9b\x3a\x86\x7e\x5b\x42\xea\x8d\x98\xb7\xbd\xf1\xb0\x1e\x59\xe0\xe5" "\x54\x95\x97\xaf\xbe\x93\xa4\xbd\x83\xdb\x89\x0c\x58\x86\x85\x55\x31" "\xe2\xdf\xdc\xaa\xab\x9f\x58\x2d\x97\x88\x1a\xfa\xe1\x97\x31\xac\xaa" "\x33\x57\x37\x10\xa2\xe9\x7d\xad\x25\x1c\x3a\x9c\x75\xa2\x50\x4d\xf8" "\x5a\x98\x44\x52\xb8\xff\x81\x9a\x28\x38\x04\xa5\xfc\xac\x4d\x25\x87" "\xfc\x30\x73\xfa\xa7\x82\x11\xcd\x05\x7d\x4f\xda\x93\x0f\xae\xc1\x2d" "\x9d\x1f\xf3\x3b\xaa\xc9\xae\xe9\xc3\x19\x5f\x74\xa1\xe1\x93\xdc\xe4" "\xb9\xec\x5e\xe4\x7a\x61\xce\x95\x93\xbf\xcd\x9f\x52\xf1\x2d\x21\xe1" "\xdd\xc6\xe8\xef\xee\xef\xc7\x40\xec\x71\xd1\xe0\xa0\xdb\x5e\x60\x66" "\x0b\x5a\x68\x9b\xf2\xa3\x3f\x0f\xd8\x2d\x47\x95\x76\xa1\x06\xa6\x3b" "\x94\x98\xe7\x99\x17\xd4\xda\xcc\xea\xb0\x7d\xe1\x16\x98\x2e\xb3\x7c" "\xa2\x05\x95\xff\x62\x14\xa4\x18\x32\x8c\xba\x04\xb6\x8b\x74\x50\x54" "\x4c\x06\xfc\x1b\xd5\x35\xd2\xf6\x27\xc0\xe3\x91\x69\x41\xb5\x46\xe0" "\x9c\x15\xd6\x8c\x1e\xae\x97\x8d\xdd\xb2\x61\xb8\x86\xff\x7c\x47\x84" "\xd5\xe2\xb6\x35\x58\x93\x13\x40\xbc\xbf\xc7\xea\x90\xde\xf1\x74\xa8" "\x92\xea\x47\x97\xd4\xc0\x3b\xf8\x0e\x8f\xb1\xa2\x2e\x21\x1d\x04\x9a" "\x4b\xc6\x70\x8a\x89\x9c\x12\x74\x17\x8b\x39\x27\x10\xac\xee\x09\xc7" "\x2b\x04\x8b\xe6\x60\x95\x54\x02\xd1\x2d\x7a\x9a\x17\x32\x51\xfe\x6c" "\xa1\xe9\xb8\xb9\xc0\xe3\x30\x6f\x05\xfa\x98\x7a\x09\xc9\x70\x93\xb6" "\x15\x9b\x26\xc7\x15\x97\xb3\x1f\x2f\xc3\x53\x5d\x04\xa4\xeb\x18\xd4" "\x33\x35\x88\x32\x10\x46\x31\x1b\x65\x2c\xdb\xf6\x8f\x3a\x4c\x40\x1c" "\xae\x75\x71\x0f\xa7\x59\x86\x55\x3d\x12\x66\xb3\x72\x7a\xfe\x17\x2c" "\xca\x5f\xda\x22\xc5\x0c\x00\x5c\xb5\x7b\x71\x82\x35\x00\x2d\x1d\x60" "\xbb\x8c\xe8\x70\xb5\x40\xb8\x68\x07\x9b\x17\x27\x54\xbf\xdf\xcb\x2e" "\x37\x3c\xf3\xe2\x6c\xba\x1a\xa1\x0d\x02\x45\x6f\x43\x67\xce\x9e\x40" "\x68\x29\x2c\x5b\xf0\x8b\x0b\xbc\x14\x53\x04\x1b\xe6\x96\x53\xeb\x23" "\x17\x15\xa9\xd0\xcd\x0b\x93\xb6\xe7\x00\xa2\xdb\xe1\x8c\xb7\xb8\xd9" "\xf8\x26\xdc\xef\x92\xc7\x9a\xa0\xa6\x18\x5e\xf6\x32\x93\x94\xda\x52" "\x36\x63\xca\x88\xe2\xe6\x5b\xd8\x87\x8e\xe1\xa9\x8b\xf6\x65\xf4\xfb" "\x57\x48\x01\xa7\x74\x29\xab\x23\xfd\xb0\x57\x9a\x68\xd5\xb1\x2a\xca" "\xc7\x84\x42\x53\x23\x6c\xd4\xfc\xf5\x81\x5d\xf6\x1c\x89\x64\x13\xa3" "\x22\xcf\x6f\xd4\x40\x3e\x0d\xa7\x21\x45\x58\x93\x85\x8b\x0c\x08\x4b" "\x5b\x60\xd7\x43\x41\x14\x25\xde\x59\xee\x3d\xf9\xd7\x1f\xed\x97\x9b" "\xd4\x10\x50\xa0\x8f\xc7\x4c\x47\x7d\xc5\x99\x0f\x5e\xcb\xb6\x08\x3b" "\xd8\xff\xdd\x87\xb1\xe6\x03\x9e\x5f\x1b\x19\x39\xe2\xc1\xe7\x3b\x70" "\x63\x15\x1c\x67\x7a\x91\x33\x75\x2e\x5d\x08\xeb\xf9\x3f\x2a\x69\x73" "\x16\x1d\xc3\x20\xea\xce\x38\xe2\x39\xbf\x0c\xc0\x4a\x24\xd1\xfc\xff" "\xaf\x52\x32\xf4\xeb\x30\x65\xdf\xdc\xc3\x68\x97\x95\x51\x57\xa9\xc3" "\xcc\x23\x8c\x72\xab\xe0\x06\xe1\xf4\xe6\x27\x1c\xb6\x8d\x38\x3e\xc0" "\x49\x38\x3a\x0e\x8c\xef\xdd\x2d\x0a\x57\xe9\x10\x82\xec\x03\x32\x83" "\x2e\xb9\xd7\x1c\x1a\x71\x5f\x16\x4d\x5a\x28\xcd\x6c\x73\xda\xc8\x46" "\xc2\x79\xf7\x31\xd8\x3f\x66\x9f\xcb\xc3\x15\x32\xb8\x06\x8a\x8e\x96" "\xec\xc5\xff\x6d\xe9\x2c\x80\x34\x97\x7a\xdd\x86\x94\xcd\xea\x9b\x33" "\x3a\xc6\xbb\x70\xae\x5f\x66\xed\x92\xd4\x3a\x3f\xd3\xf8\x7c\x84\xc9" "\x42\xfd\xa3\xb7\xfa\xb3\xc7\xfc\xb3\xe5\xee\x48\xb4\xe6\x5f\x00\xe7" "\x9f\x97\x57\xd9\xd4\xbc\xbf\x21\xc4\x03\x56\x92\x2e\x01\xbc\x4b\x42" "\x9f\xa1\x50\x2d\x03\xa1\x4e\xea\x94\x24\x35\xda\x98\x22\x1e\x63\x76" "\xb7\xc6\xe7\xa2\x61\xfa\x43\xc4\x32\x95\x95\xac\xdf\x8b\x88\x27\xde" "\x80\x2d\x57\xfe\x03\x25\xa6\x8f\x20\x0f\x34\x1e\x95\xed\xf6\x7a\xb6" "\x49\x6b\x9e\x2d\x53\xf1\x7f\xd2\x47\xf9\x0d\x1d\xe5\x41\x81\xec\x61" "\xcf\xeb\x40\x99\x46\x78\xd0\x94\x7d\x51\x90\xc1\xcb\xcc\x09\x7e\x0f" "\x30\x9f\x0d\x2a\xf7\x2b\x34\x62\x97\x4c\x61\xa3\x37\xc0\xaf\xb5\xf3" "\x10\x28\x92\xda\xac\x23\xf5\x48\x8e\x27\xc8\xd3\xec\x4e\xb0\xb8\x5c" "\x94\x04\x55\x04\x21\x65\xcb\x7c\x11\x2d\xc1\xd4\x39\x7f\x09\x10\x69" 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"\x31\x1c\x7f\x9e\x8e\xab\xe6\x27\xc2\x94\xe6\x03\xea\x25\x4d\x5f\xbc" "\x6a\xc7\xcd\xb2\x9a\xf7\x65\xa8\x94\x2c\x1a\xfb\x41\x2b\x1f\x4c\xe3" "\x2f\xd8\x2b\x6e\x7a\x83\xa3\x6d\xb5\xa6\x73\xaa\xbd\xf1\x0b\x64\x55" "\x89\x6d\xa1\x13\xc3\xfb\xd3\x42\x63\x02\xb6\xdf\xf9\x0a\x85\x5e\x26" "\xf5\x5c\xef\x78\x28\x91\x74\x01\xf7\x24\x46\x7d\x0e\x8a\x3e\x48\x3a" "\xee\xc9\xde\xcf\x13\x6d\xb3\x77\x39\x04\x36\xce\x05\xe9\x84\x43\xbc" "\x79\x93\x14\x31\xed\x9f\x34\xe0\x0d\x64\x77\x29\xda\xbd\xc2\x2b\xc3" "\xff\x7c\xc5\x59\x20\xbd\x32\x17\xac\xd6\x5e\xd3\xfd\xba\xfb\xb2\xdc" "\x16\x93\x1b\x26\x67\x4e\xd4\x8f\x95\x14\x5e\x87\x81\xaa\x21\x13\xf1" "\x9d\x26\xb1\x5a\x64\xd5\xa8\xde\x00\xd2\xda\x7f\xcf\xf3\x5f\xa6\x03" "\xbb\x45\xeb\xb1\xa0\x64\x35\x44\xc8\xa7\x63\x1f\x15\x88\x56\x08\x2f" "\x81\x43\xe5\xa1\x42\x5d\xe7\xeb\x3d\x9e\xbe\x46\x7c\xc5\x21\x84\x3a" "\x5f\xe2\x1b\x3b\xed\x4c\x40\x19\x9e\x67\xaa\xff\x14\x39\x16\x7e\x17" "\xbb\x63\x0e\xae\x80\xb1\x37\xb4\x19\xa5\x2c\x22\x41\x97\xa6\xed\x61" "\x51\xd2\x50\x15\x58\x34\x8d\xc3\x4c\xd4\xfa\xaf\xf5\x36\x10\x7c\xf7" "\x68\x05\x4a\x67\xe6\xc3\xdb\x1c\xcc\x25\xe7\xe9\xf7\x50\x79\xde\x69" "\x52\x4d\xca\x92\x97\xd9\xa2\x64\x51\xc7\xe5\x6e\x45\x0d\xe4\xd1\x11" "\xc7\x5a\xfc\xb2\xcb\x6f\xc9\xc4\xac\x84\xb5\xfd\xe8\x39\x7d\x55\xf6" "\xe4\xb2\xab\xe0\x28\xcb\xfb\x90\xc4\x72\x71\xfc\x96\x1b\x4b\xf8\x91" "\xb4\x97\xed\xdc\xba\xa3\x6a\x62\xd3\x72\x8d\x18\xc2\xe2\xaa\xfe\xb8" "\xce\x4d\x67\xc9\x32\x03\xe0\x61\xf3\x8e\x30\xd6\xa3\x54\xd8\x60\xf9" "\x08\x87\xe8\x03\x1d\x7d\x41\x6b\xc6\xdc\xfd\x09\xd2\x45\xed\x10\xe9" "\xa3\x4c\xe2\x71\xa2\x4b\xe5\xa1\x90\x0c\x23\x88\xdd\x61\x9f\xf3\x61" "\xc1\x49\x4b\xa8\x06\x7a\x96\x05\xc4\x50\xef\x5e\x6c\xb7\xab\xdc\x70" "\x90\x1c\x7d\xe2\x4c\xf7\x70\x4b\x99\x72\x43\x6b\xf6\xbd\x03\x2d\x95" "\xab\xcd\xbf\xb5\x66\x65\x31\x42\x44\x3f\x8b\xdb\x4d\x09\x50\x40\xdb" "\x5f\x86\x2a\x57\xec\x06\x40\x35\xfa\x39\x23\x71\x6b\x3a\x2b\xc2\xda" "\x09\xf3\xe0\xba\xe7\x4c\xa7\xa9\x25\x97\x95\xcc\x37\x6e\xb0\x22\x5e" "\x54\x85\xdb\xf9\x4b\xc1\x75\x43\x6b\xe5\xf0\x9b\x7f\x74\xac\xda\x8b" "\x7a\x0d\xc2\xe8\x66\x9b\xcc\xc7\x8f\x2a\x58\x5d\xbe\xe1\xca\x44\x85" "\x8d\xe0\x27\x1d\x61\xd5\xd5\xa0\x2c\xac\x64\x39\x7b\x75\x6e\xd7\x94" "\x49\x43\x37\xe6\x5d\x12\x0e\x44\x7c\x96\x0c\xb8\x51\x9b\xf0\xfa\x1c" "\x8e\x00\xb9\x13\x91\xc1\xff\xbc\xf7\x2b\x33\xb8\x1f\xa4\xdd\xf5\x8c" "\x84\xe6\xf2\x03\x29\xaa\x6f\xbc\x17\x19\xc5\x47\xc4\x58\x50\x1c\x74" "\xaf\x97\x42\xd6\x38\xf9\xcc\x2f\x85\xba\x1d\x81\x5c\xd9\x53\x80\xcb" "\xcd\x35\x80\x65\x7c\xba\xcb\xfa\x06\x6b\xf3\xa5\x4a\xdf\x62\x49\x8d" "\x63\xb4\x74\x29\x5d\x19\x07\xca\x86\x40\xee\xed\x40\x6a\x21\x8a\xfb" "\xf0\x6d\x2f\x7c\x2f\x37\x79\x82\x96\xe6\x28\xe1\x39\xab\x71\x5c\x8b" "\x6d\x46\xb9\x97\x17\x16\xf6\xa3\x93\x9b\x71\x79\x11\x4a\x03\xb3\xb7" "\x5c\x94\x8b\xaf\xab\xbc\x59\x8f\x10\x49\xaf\x16\x54\xc8\xa6", 8192); *(uint64_t*)0x20000b80 = 0; *(uint64_t*)0x20000b88 = 0; *(uint64_t*)0x20000b90 = 0; *(uint64_t*)0x20000b98 = 0; *(uint64_t*)0x20000ba0 = 0; *(uint64_t*)0x20000ba8 = 0; *(uint64_t*)0x20000bb0 = 0; *(uint64_t*)0x20000bb8 = 0; *(uint64_t*)0x20000bc0 = 0; *(uint64_t*)0x20000bc8 = 0; *(uint64_t*)0x20000bd0 = 0; *(uint64_t*)0x20000bd8 = 0x20000640; *(uint32_t*)0x20000640 = 0x90; *(uint32_t*)0x20000644 = 0; *(uint64_t*)0x20000648 = 0x80; *(uint64_t*)0x20000650 = 5; *(uint64_t*)0x20000658 = 2; *(uint64_t*)0x20000660 = 0xc6cd; *(uint64_t*)0x20000668 = 0x200; *(uint32_t*)0x20000670 = 8; *(uint32_t*)0x20000674 = 3; *(uint64_t*)0x20000678 = 6; *(uint64_t*)0x20000680 = 0xfffffffffffffe00; *(uint64_t*)0x20000688 = 0x8000000000000000; *(uint64_t*)0x20000690 = 0x101; *(uint64_t*)0x20000698 = 5; *(uint64_t*)0x200006a0 = 0xfffffffffffffeff; *(uint32_t*)0x200006a8 = 0x362; *(uint32_t*)0x200006ac = 9; *(uint32_t*)0x200006b0 = 0; *(uint32_t*)0x200006b4 = 0x8000; *(uint32_t*)0x200006b8 = 5; *(uint32_t*)0x200006bc = r[2]; *(uint32_t*)0x200006c0 = r[3]; *(uint32_t*)0x200006c4 = 0x8001; *(uint32_t*)0x200006c8 = 6; *(uint32_t*)0x200006cc = 0; *(uint64_t*)0x20000be0 = 0; *(uint64_t*)0x20000be8 = 0; *(uint64_t*)0x20000bf0 = 0; *(uint64_t*)0x20000bf8 = 0; syz_fuse_handle_req(/*fd=*/r[0], /*buf=*/0x20004800, /*len=*/0x2000, /*res=*/0x20000b80); break; case 4: *(uint32_t*)0x20000000 = 0x50; *(uint32_t*)0x20000004 = 0; *(uint64_t*)0x20000008 = r[1]; *(uint32_t*)0x20000010 = 7; *(uint32_t*)0x20000014 = 5; *(uint32_t*)0x20000018 = 0; *(uint32_t*)0x2000001c = 0; *(uint16_t*)0x20000020 = 0; *(uint16_t*)0x20000022 = 0; *(uint32_t*)0x20000024 = 0; *(uint32_t*)0x20000028 = 0; *(uint16_t*)0x2000002c = 0; *(uint16_t*)0x2000002e = 0; memset((void*)0x20000030, 0, 32); syscall(__NR_write, /*fd=*/r[0], /*arg=*/0x20000000ul, /*len=*/0x50ul); break; case 5: memcpy((void*)0x200001c0, "./file0/file0\000", 14); syz_mount_image(/*fs=*/0, /*dir=*/0x200001c0, /*flags=*/0, /*opts=*/0, /*chdir=*/0, /*size=*/0, /*img=*/0); break; } } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { do_sandbox_none(); } } sleep(1000000); return 0; }