// https://syzkaller.appspot.com/bug?id=997a78f17b2096d0138a344ac04a4142f0fc9265 // 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_fsconfig #define __NR_fsconfig 431 #endif #ifndef __NR_fspick #define __NR_fspick 433 #endif #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif static unsigned long long procid; static __thread int clone_ongoing; static __thread int skip_segv; static __thread jmp_buf segv_env; static void segv_handler(int sig, siginfo_t* info, void* ctx) { if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) { exit(sig); } uintptr_t addr = (uintptr_t)info->si_addr; const uintptr_t prog_start = 1 << 20; const uintptr_t prog_end = 100 << 20; int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0; int valid = addr < prog_start || addr > prog_end; if (skip && valid) { _longjmp(segv_env, 1); } exit(sig); } static void install_segv_handler(void) { struct sigaction sa; memset(&sa, 0, sizeof(sa)); sa.sa_handler = SIG_IGN; syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8); syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8); memset(&sa, 0, sizeof(sa)); sa.sa_sigaction = segv_handler; sa.sa_flags = SA_NODEFER | SA_SIGINFO; sigaction(SIGSEGV, &sa, NULL); sigaction(SIGBUS, &sa, NULL); } #define NONFAILING(...) \ ({ \ int ok = 1; \ __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \ if (_setjmp(segv_env) == 0) { \ __VA_ARGS__; \ } else \ ok = 0; \ __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \ ok; \ }) static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { int state; } event_t; static void event_init(event_t* ev) { ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { if (ev->state) exit(1); __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); } static void event_wait(event_t* ev) { while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); } static int event_isset(event_t* ev) { return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; for (;;) { uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) return 1; now = current_time_ms(); if (now - start > timeout) return 0; } } static bool write_file(const char* file, const char* what, ...) { char buf[1024]; va_list args; va_start(args, what); vsnprintf(buf, sizeof(buf), what, args); va_end(args); buf[sizeof(buf) - 1] = 0; int len = strlen(buf); int fd = open(file, O_WRONLY | O_CLOEXEC); if (fd == -1) return false; if (write(fd, buf, len) != len) { int err = errno; close(fd); errno = err; return false; } close(fd); return true; } //% This code is derived from puff.{c,h}, found in the zlib development. The //% original files come with the following copyright notice: //% Copyright (C) 2002-2013 Mark Adler, all rights reserved //% version 2.3, 21 Jan 2013 //% This software is provided 'as-is', without any express or implied //% warranty. In no event will the author be held liable for any damages //% arising from the use of this software. //% Permission is granted to anyone to use this software for any purpose, //% including commercial applications, and to alter it and redistribute it //% freely, subject to the following restrictions: //% 1. The origin of this software must not be misrepresented; you must not //% claim that you wrote the original software. If you use this software //% in a product, an acknowledgment in the product documentation would be //% appreciated but is not required. //% 2. Altered source versions must be plainly marked as such, and must not be //% misrepresented as being the original software. //% 3. This notice may not be removed or altered from any source distribution. //% Mark Adler madler@alumni.caltech.edu //% BEGIN CODE DERIVED FROM puff.{c,h} #define MAXBITS 15 #define MAXLCODES 286 #define MAXDCODES 30 #define MAXCODES (MAXLCODES + MAXDCODES) #define FIXLCODES 288 struct puff_state { unsigned char* out; unsigned long outlen; unsigned long outcnt; const unsigned char* in; unsigned long inlen; unsigned long incnt; int bitbuf; int bitcnt; jmp_buf env; }; static int puff_bits(struct puff_state* s, int need) { long val = s->bitbuf; while (s->bitcnt < need) { if (s->incnt == s->inlen) longjmp(s->env, 1); val |= (long)(s->in[s->incnt++]) << s->bitcnt; s->bitcnt += 8; } s->bitbuf = (int)(val >> need); s->bitcnt -= need; return (int)(val & ((1L << need) - 1)); } static int puff_stored(struct puff_state* s) { s->bitbuf = 0; s->bitcnt = 0; if (s->incnt + 4 > s->inlen) return 2; unsigned len = s->in[s->incnt++]; len |= s->in[s->incnt++] << 8; if (s->in[s->incnt++] != (~len & 0xff) || s->in[s->incnt++] != ((~len >> 8) & 0xff)) return -2; if (s->incnt + len > s->inlen) return 2; if (s->outcnt + len > s->outlen) return 1; for (; len--; s->outcnt++, s->incnt++) { if (s->in[s->incnt]) s->out[s->outcnt] = s->in[s->incnt]; } return 0; } struct puff_huffman { short* count; short* symbol; }; static int puff_decode(struct puff_state* s, const struct puff_huffman* h) { int first = 0; int index = 0; int bitbuf = s->bitbuf; int left = s->bitcnt; int code = first = index = 0; int len = 1; short* next = h->count + 1; while (1) { while (left--) { code |= bitbuf & 1; bitbuf >>= 1; int count = *next++; if (code - count < first) { s->bitbuf = bitbuf; s->bitcnt = (s->bitcnt - len) & 7; return h->symbol[index + (code - first)]; } index += count; first += count; first <<= 1; code <<= 1; len++; } left = (MAXBITS + 1) - len; if (left == 0) break; if (s->incnt == s->inlen) longjmp(s->env, 1); bitbuf = s->in[s->incnt++]; if (left > 8) left = 8; } return -10; } static int puff_construct(struct puff_huffman* h, const short* length, int n) { int len; for (len = 0; len <= MAXBITS; len++) h->count[len] = 0; int symbol; for (symbol = 0; symbol < n; symbol++) (h->count[length[symbol]])++; if (h->count[0] == n) return 0; int left = 1; for (len = 1; len <= MAXBITS; len++) { left <<= 1; left -= h->count[len]; if (left < 0) return left; } short offs[MAXBITS + 1]; offs[1] = 0; for (len = 1; len < MAXBITS; len++) offs[len + 1] = offs[len] + h->count[len]; for (symbol = 0; symbol < n; symbol++) if (length[symbol] != 0) h->symbol[offs[length[symbol]]++] = symbol; return left; } static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode, const struct puff_huffman* distcode) { static const short lens[29] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258}; static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; static const short dists[30] = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}; static const short dext[30] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; int symbol; do { symbol = puff_decode(s, lencode); if (symbol < 0) return symbol; if (symbol < 256) { if (s->outcnt == s->outlen) return 1; if (symbol) s->out[s->outcnt] = symbol; s->outcnt++; } else if (symbol > 256) { symbol -= 257; if (symbol >= 29) return -10; int len = lens[symbol] + puff_bits(s, lext[symbol]); symbol = puff_decode(s, distcode); if (symbol < 0) return symbol; unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]); if (dist > s->outcnt) return -11; if (s->outcnt + len > s->outlen) return 1; while (len--) { if (dist <= s->outcnt && s->out[s->outcnt - dist]) s->out[s->outcnt] = s->out[s->outcnt - dist]; s->outcnt++; } } } while (symbol != 256); return 0; } static int puff_fixed(struct puff_state* s) { static int virgin = 1; static short lencnt[MAXBITS + 1], lensym[FIXLCODES]; static short distcnt[MAXBITS + 1], distsym[MAXDCODES]; static struct puff_huffman lencode, distcode; if (virgin) { lencode.count = lencnt; lencode.symbol = lensym; distcode.count = distcnt; distcode.symbol = distsym; short lengths[FIXLCODES]; int symbol; for (symbol = 0; symbol < 144; symbol++) lengths[symbol] = 8; for (; symbol < 256; symbol++) lengths[symbol] = 9; for (; symbol < 280; symbol++) lengths[symbol] = 7; for (; symbol < FIXLCODES; symbol++) lengths[symbol] = 8; puff_construct(&lencode, lengths, FIXLCODES); for (symbol = 0; symbol < MAXDCODES; symbol++) lengths[symbol] = 5; puff_construct(&distcode, lengths, MAXDCODES); virgin = 0; } return puff_codes(s, &lencode, &distcode); } static int puff_dynamic(struct puff_state* s) { static const short order[19] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; int nlen = puff_bits(s, 5) + 257; int ndist = puff_bits(s, 5) + 1; int ncode = puff_bits(s, 4) + 4; if (nlen > MAXLCODES || ndist > MAXDCODES) return -3; short lengths[MAXCODES]; int index; for (index = 0; index < ncode; index++) lengths[order[index]] = puff_bits(s, 3); for (; index < 19; index++) lengths[order[index]] = 0; short lencnt[MAXBITS + 1], lensym[MAXLCODES]; struct puff_huffman lencode = {lencnt, lensym}; int err = puff_construct(&lencode, lengths, 19); if (err != 0) return -4; index = 0; while (index < nlen + ndist) { int symbol; int len; symbol = puff_decode(s, &lencode); if (symbol < 0) return symbol; if (symbol < 16) lengths[index++] = symbol; else { len = 0; if (symbol == 16) { if (index == 0) return -5; len = lengths[index - 1]; symbol = 3 + puff_bits(s, 2); } else if (symbol == 17) symbol = 3 + puff_bits(s, 3); else symbol = 11 + puff_bits(s, 7); if (index + symbol > nlen + ndist) return -6; while (symbol--) lengths[index++] = len; } } if (lengths[256] == 0) return -9; err = puff_construct(&lencode, lengths, nlen); if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1])) return -7; short distcnt[MAXBITS + 1], distsym[MAXDCODES]; struct puff_huffman distcode = {distcnt, distsym}; err = puff_construct(&distcode, lengths + nlen, ndist); if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1])) return -8; return puff_codes(s, &lencode, &distcode); } static int puff(unsigned char* dest, unsigned long* destlen, const unsigned char* source, unsigned long sourcelen) { struct puff_state s = { .out = dest, .outlen = *destlen, .outcnt = 0, .in = source, .inlen = sourcelen, .incnt = 0, .bitbuf = 0, .bitcnt = 0, }; int err; if (setjmp(s.env) != 0) err = 2; else { int last; do { last = puff_bits(&s, 1); int type = puff_bits(&s, 2); err = type == 0 ? puff_stored(&s) : (type == 1 ? puff_fixed(&s) : (type == 2 ? puff_dynamic(&s) : -1)); if (err != 0) break; } while (!last); } *destlen = s.outcnt; return err; } //% END CODE DERIVED FROM puff.{c,h} #define ZLIB_HEADER_WIDTH 2 static int puff_zlib_to_file(const unsigned char* source, unsigned long sourcelen, int dest_fd) { if (sourcelen < ZLIB_HEADER_WIDTH) return 0; source += ZLIB_HEADER_WIDTH; sourcelen -= ZLIB_HEADER_WIDTH; const unsigned long max_destlen = 132 << 20; void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0); if (ret == MAP_FAILED) return -1; unsigned char* dest = (unsigned char*)ret; unsigned long destlen = max_destlen; int err = puff(dest, &destlen, source, sourcelen); if (err) { munmap(dest, max_destlen); errno = -err; return -1; } if (write(dest_fd, dest, destlen) != (ssize_t)destlen) { munmap(dest, max_destlen); return -1; } return munmap(dest, max_destlen); } static int setup_loop_device(unsigned char* data, unsigned long size, const char* loopname, int* loopfd_p) { int err = 0, loopfd = -1; int memfd = syscall(__NR_memfd_create, "syzkaller", 0); if (memfd == -1) { err = errno; goto error; } if (puff_zlib_to_file(data, size, memfd)) { err = errno; goto error_close_memfd; } loopfd = open(loopname, O_RDWR); if (loopfd == -1) { err = errno; goto error_close_memfd; } if (ioctl(loopfd, LOOP_SET_FD, memfd)) { if (errno != EBUSY) { err = errno; goto error_close_loop; } ioctl(loopfd, LOOP_CLR_FD, 0); usleep(1000); if (ioctl(loopfd, LOOP_SET_FD, memfd)) { err = errno; goto error_close_loop; } } close(memfd); *loopfd_p = loopfd; return 0; error_close_loop: close(loopfd); error_close_memfd: close(memfd); error: errno = err; return -1; } static void reset_loop_device(const char* loopname) { int loopfd = open(loopname, O_RDWR); if (loopfd == -1) { return; } if (ioctl(loopfd, LOOP_CLR_FD, 0)) { } close(loopfd); } static long syz_mount_image(volatile long fsarg, volatile long dir, volatile long flags, volatile long optsarg, volatile long change_dir, volatile unsigned long size, volatile long image) { unsigned char* data = (unsigned char*)image; int res = -1, err = 0, need_loop_device = !!size; char* mount_opts = (char*)optsarg; char* target = (char*)dir; char* fs = (char*)fsarg; char* source = NULL; char loopname[64]; if (need_loop_device) { int loopfd; memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; close(loopfd); source = loopname; } mkdir(target, 0777); char opts[256]; memset(opts, 0, sizeof(opts)); if (strlen(mount_opts) > (sizeof(opts) - 32)) { } strncpy(opts, mount_opts, sizeof(opts) - 32); if (strcmp(fs, "iso9660") == 0) { flags |= MS_RDONLY; } else if (strncmp(fs, "ext", 3) == 0) { bool has_remount_ro = false; char* remount_ro_start = strstr(opts, "errors=remount-ro"); if (remount_ro_start != NULL) { char after = *(remount_ro_start + strlen("errors=remount-ro")); char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1); has_remount_ro = ((before == '\0' || before == ',') && (after == '\0' || after == ',')); } if (strstr(opts, "errors=panic") || !has_remount_ro) strcat(opts, ",errors=continue"); } else if (strcmp(fs, "xfs") == 0) { strcat(opts, ",nouuid"); } res = mount(source, target, fs, flags, opts); if (res == -1) { err = errno; goto error_clear_loop; } res = open(target, O_RDONLY | O_DIRECTORY); if (res == -1) { err = errno; goto error_clear_loop; } if (change_dir) { res = chdir(target); if (res == -1) { err = errno; } } error_clear_loop: if (need_loop_device) reset_loop_device(loopname); errno = err; return res; } #define FS_IOC_SETFLAGS _IOW('f', 2, long) static void remove_dir(const char* dir) { int iter = 0; DIR* dp = 0; 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 < 5; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0) + (call == 1 ? 4000 : 0)); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); reset_loop(); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); setup_test(); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { 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: NONFAILING(memcpy((void*)0x2000000000c0, "nilfs2\000", 7)); NONFAILING(memcpy((void*)0x200000000180, "./file7\000", 8)); NONFAILING(memcpy( (void*)0x200000000400, "\x78\x9c\xec\xdd\x4d\x8c\x1b\x57\x01\x00\xe0\x67\xef\x7a\x93\x4d\x52" "\xe2\x94\x84\x2e\x49\x69\x13\x7e\xda\xf2\xd3\xdd\x66\xb3\x84\x9f\x08" "\x9a\xaa\x11\x12\x51\x53\x71\xab\x54\x71\x89\xd2\xb4\x44\xa4\xe1\x27" "\x95\xa0\x55\x25\x92\x5c\xe8\x8d\x56\x55\xb8\x42\x11\xa7\x22\x51\x01" "\x42\x6a\x2f\x28\xea\x89\x4b\x25\x1a\x89\x4b\x4f\x85\x03\x07\xa2\x20" "\x55\xe2\x00\xa5\x89\xd1\xda\xef\x79\xc7\x2f\x76\xc7\xce\x66\xd7\xf6" "\xfa\xfb\xa4\xb7\xcf\x33\x6f\x3c\xef\xcd\xec\xcc\x78\xfe\xde\x7b\x01" "\x98\x58\xd5\xe6\xdf\xa5\xa5\xb9\x4a\x08\x17\xdf\x78\xf9\xc8\x3f\xef" "\xf9\xc7\xec\xf2\x98\x07\xdb\x53\xd4\x9b\x7f\xa7\xd3\x60\x25\x84\x5a" "\x2b\xea\x1c\x1f\xbd\x3b\xd5\x8a\xaf\xbd\xf7\xfc\x89\x6e\x71\x25\x2c" "\x36\xff\xa6\xe1\xf0\xe8\xd5\xf6\x77\xb7\x86\x10\xce\x85\xbd\xe1\x52" "\xa8\x87\xdd\x17\x2f\xbf\xf4\xd6\xe2\x23\xc7\xce\x1f\xbd\xb0\xef\xed" "\x57\x0f\x5d\x59\x93\x85\x07\x00\x80\x09\xf3\xad\x4b\x87\x96\x76\xfd" "\xed\x2f\x7b\x76\xbc\xff\xda\x5d\x87\xc3\xa6\xf6\xf8\x74\x7e\x5e\x8f" "\xc3\xdb\x42\xeb\xbc\xff\x70\x3c\xf1\x4f\xe7\xff\xd5\xd0\x39\x5c\x29" "\x84\xa2\x99\x6c\xba\xe9\x18\xaa\xd9\x74\x53\x5d\xa6\x2b\xe6\x53\xcb" "\xa6\x9b\xee\x91\xff\x4c\x36\xdf\x5a\x3b\x7d\x4f\xc7\x74\x9b\x4a\xf2" "\x9f\x2a\x8c\xeb\xb6\xdc\x30\xce\xd2\x76\x5c\x0f\x33\x61\xbe\x63\xb8" "\x5a\x9d\x9f\x6f\x5d\x93\x87\xe6\x75\xfd\x4c\x65\xfe\xcc\xa9\xd3\x4f" "\x9e\x1d\x52\x41\x81\x5b\xee\xdf\x77\x87\x10\xf6\x0a\x83\x86\x46\xa3" "\xf1\x93\xe6\x0a\x1c\x81\xb2\x08\xc2\xcd\x86\xc6\xf6\x61\x1f\x81\x00" "\x5a\xf2\xe7\x85\x37\x38\x97\xdf\x59\x58\x9d\xf6\xdc\xa6\xfb\xcb\xff" "\xea\x43\xd5\xee\xdf\x87\x5b\x60\xbd\xb7\x7f\xf9\x8f\x57\xfe\xbf\x3e" "\xef\x88\xc3\xad\xb3\x51\xb7\xa6\xb4\x5c\x69\x3f\xda\x16\x87\xf3\xe7" "\x08\xf9\xfb\x4b\x83\xee\xff\x69\x7e\xf9\xf3\x88\x5a\x9f\xe5\xec\xf5" "\x1c\x61\x5c\x9e\x2f\xf4\x2a\xe7\xd4\x3a\x97\xe3\x66\xf5\x2a\x7f\xbe" "\x5d\x6c\x54\x5f\x8b\x4f\xca\xd2\x7a\xf8\x7a\x96\x5e\xdc\x7f\xf2\xff" "\xe9\xb8\xfc\x8f\x81\xee\xfe\xb3\x5e\xf7\xff\x5f\x99\x1d\xfa\xbd\xce" "\xe5\xb0\x77\x7d\xf3\xbb\xad\xbd\xa2\xd7\x32\x9f\xb5\x9e\xff\x20\xa1" "\x36\xc6\x65\x9f\xc0\xd0\x18\xca\x51\x07\x18\x07\x2b\xef\xcd\xb5\x34" "\xa2\x94\x9e\xbf\xd7\x97\xa7\x6f\x2a\x49\xdf\x5c\x92\x3e\x5b\x92\xbe" "\xa5\x24\x7d\x6b\x49\x3a\x4c\xb2\x3f\x3c\xf3\xb3\xf0\x62\x65\xe5\x3a" "\x3f\xbf\xa6\x1f\xf4\x7e\x58\xba\xcf\x96\x4e\x7c\x3f\x32\x60\x79\xf2" "\xfb\x91\x83\xe6\x9f\xbf\xf7\x3b\xa8\xd5\xe6\x9f\xbf\x4f\x0c\xa3\xec" "\xf5\xe3\x8f\x9d\xfc\xf2\x13\x8f\x5f\x6e\xbd\xff\x5f\x69\x6f\xff\xd7" "\xe3\xf6\x9e\x2e\xd1\xea\x71\xdf\xba\x14\x27\x48\xf7\x0b\xf3\xfb\xea" "\xed\x77\xff\xeb\x9d\xf9\x54\x7b\x4c\x77\x7b\x56\x9e\xdb\x6e\x98\xbe" "\xd1\xca\x71\x67\xe7\x74\x95\x9d\x2b\xf3\x09\x85\xe3\xcc\x0d\xe5\x98" "\x2b\x7e\xeb\x07\x37\x94\xa7\x3d\xdd\x9d\x9d\xf3\xaf\x67\xd3\xcd\xc6" "\xb0\x39\x2b\x6f\x7e\x7e\xb2\x25\xfb\x5e\x3a\xff\x48\xc7\xd5\xb4\xbe" "\xa6\xb3\xe5\xad\x65\xcb\x31\x93\x95\x23\x1d\x57\x76\xc4\x38\x2f\x07" "\xdc\x8c\xb4\x3d\xd6\x43\xa5\xda\xed\xfd\xff\xb4\x7d\xce\x85\x5a\xe5" "\xc9\x53\xa7\x4f\x3e\x10\x87\xd3\x76\xfa\xe7\xa9\xda\xa6\xe5\xf1\xfb" "\x8b\x33\xfd\xcd\xfa\x94\x1d\x58\x9d\x95\xfd\xbd\xfb\xfe\x9f\x7e\xbf" "\xe6\x42\x67\xfd\x9f\x6d\xed\xf1\xb5\x6a\xf1\xb8\xb0\x7d\x65\x7c\xa5" "\x78\x5c\xa8\x67\xe3\x17\x5b\x83\xed\xc7\xe4\x69\xfc\x81\x38\x9c\x7e" "\xe7\xbe\x33\x35\xdb\x1c\x3f\x7f\xe2\x7b\xa7\x9f\xb8\xd5\x0b\x0f\x13" "\xee\xec\xb3\xcf\x7d\xf7\xf8\xe9\xd3\x27\x7f\xb8\x61\x3e\x1c\x0e\xab" "\x9c\xcf\xec\x58\xac\x96\x74\xe4\x1c\x95\xf2\xf4\xf3\xe1\x83\xc6\x48" "\x14\xc3\x87\x7e\x3e\x94\x1d\x39\x36\xea\x9b\x83\x30\x39\x16\x9e\x79" "\xfa\xfb\x0b\x67\x9f\x7d\xee\xfe\x53\x4f\x1f\x7f\xea\xe4\x53\x27\xcf" "\x1c\x38\x78\xf0\xc0\xe2\xe2\xc1\xaf\x1c\x58\x5a\x68\x9e\xd7\x2f\x14" "\xcf\xee\x81\x8d\x64\xe5\x47\x7f\xd8\x25\x01\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\xfa\xf5\xa3\xa3\x47\x2e\xff\xf5\xcd\x2f\xbd\xd3\xaa\xff" "\xbf\x52\xff\x2f\xd5\xff\x4f\x6f\xfe\xa6\xfa\xff\x2f\x64\xf5\xff\xf3" "\x7a\xf2\xa9\x56\x40\xaa\x07\xb8\xa3\x4b\x7a\xb3\xdf\xbd\xd7\x3b\xcb" "\x31\x93\x4d\x57\x8b\xe1\xa3\x59\x79\x77\x66\xf9\xec\xca\xbe\xf7\xb1" "\x18\xb7\xfb\xf1\x8b\xf5\xff\x53\x7d\xfb\xbc\x5d\xd7\x54\x9e\x3b\xb2" "\xf1\x79\xfb\xbd\x69\xba\xb9\x6c\x7c\xde\x5e\xca\x4c\xd6\x06\x49\xbb" "\xbf\xc0\x58\x61\xff\x93\x71\xf8\x42\x8c\x7f\x15\x60\x88\x2a\xb3\xdd" "\x47\xc7\xf8\x43\xdb\xb7\xfe\xed\x0b\xed\xe9\x53\xfb\x14\xda\xa5\x18" "\x4f\xe9\xff\x96\xb6\x86\xd4\x8e\x49\xaa\xff\xdd\xab\x5d\xa7\x74\xfc" "\xdf\xb1\x0e\x65\xe4\xd6\x5b\x8f\xea\x84\xc3\x5e\x46\xa0\xbb\x7f\x8d" "\x7c\xff\x9f\x85\x33\xf1\xde\xd3\x4d\x0d\xbf\x9c\xa1\xd1\x18\x7e\x19" "\x56\x1f\x3e\x7c\x3d\x0b\x1b\x2c\x34\x1a\x7a\xf1\x00\x46\xc3\xb0\xfb" "\xff\x4c\xf7\x3d\x53\x7c\xe6\x4f\xdf\xdc\xbc\x1c\xd2\x64\x57\x1f\xea" "\x3c\x5e\xe6\xed\x97\xc2\x6a\x8c\x7a\xff\x93\xf2\xdf\x58\xfd\x7f\xb6" "\xfb\xbf\xeb\xeb\xf8\xd7\xa5\x75\xf5\x8e\x76\x9e\xfb\xef\x5d\xe1\xbf" "\xbf\xb8\xf2\x4e\x21\xdb\xb0\xbb\xdf\xe3\x6f\xbe\xfc\xa9\x1d\xe8\x9d" "\xe5\x79\x16\xbd\x1f\xf3\x4f\xcb\x7f\x6f\xe8\x2f\xff\xc6\x2b\x59\xfe" "\xf9\x03\xa1\x3e\xfd\x2f\xcb\x7f\x4b\x9f\xf9\xdf\xb0\xfc\x77\x96\xe5" "\xd4\xbd\x27\xc3\x0f\x62\xfe\x69\xb5\xdd\xf7\xa9\x7e\xf3\x6f\x95\xb8" "\x52\xed\x2c\x47\x7e\xdf\x38\x3d\xff\xcb\xef\x1b\x27\xd7\xb2\xe5\x4f" "\x6d\x7b\x0e\xbc\xfc\x37\xd9\x51\xe3\xf5\x98\x3f\x4c\xb2\xde\xfd\xcc" "\xf6\xdb\x83\xed\x68\xea\xd6\xff\xef\xf4\x08\xf6\xff\xdb\x4b\xfe\x1e" "\xc6\x17\xe3\x70\x3a\x10\xa6\xf7\x1c\xf2\x5f\xe4\x41\xcb\x9f\xde\xaf" "\x48\xbf\x03\xbb\xb2\xf9\x57\x4a\x7e\xdf\xc6\xa5\x9f\xe2\x5e\x26\xbd" "\xff\xdf\xaf\xc6\xb8\x6c\x7f\x48\xfd\xff\xa6\xed\xb1\xde\x65\xb8\x5a" "\x18\xae\x75\x59\xb7\xe3\xbe\xad\xc0\x46\xf3\xee\xc8\x3f\xff\x1b\xb3" "\x70\x6e\x04\xca\x30\x68\xf8\xe9\x08\x94\x61\x22\xc2\x68\xf4\x81\x5d" "\x0c\x8d\x46\x63\xa8\x0d\x79\x97\x67\xbe\x65\x5d\xca\x31\xa9\x86\xdd" "\x8a\xfb\xb0\x9f\x3e\x0f\x3b\xff\x61\xaf\xff\x32\x79\xff\xbf\xf9\x39" "\x7c\xde\xff\x6f\x35\xbb\x80\xc8\xfb\xff\xcd\xbf\x9f\xf7\xff\x9b\xa7" "\xe7\xfd\xeb\xe5\xe9\x79\xff\xbf\xf9\xfa\xcc\xfb\xff\xcd\xd3\xef\xc8" "\xe6\x9b\xdf\xc1\x9e\x2b\x49\xff\x78\x49\xfa\xee\x92\xf4\x3d\x2b\xe9" "\xb3\x59\xfa\x37\x8a\xe5\xec\xf5\xfd\x4f\x94\xa4\xef\x2b\x49\xbf\xab" "\x24\xfd\xee\x92\xf4\xdb\x4b\xd2\xa7\x4a\xd2\x3f\x5d\x92\xfe\x99\x92" "\xf4\x7b\x4a\xd2\xef\x2b\x49\xff\x6c\x49\xfa\x46\xd7\xac\x8f\x52\xd8" "\xa9\x26\x6d\xf9\x61\x92\xe5\xf5\xf3\xec\xff\x30\x39\xd2\xf3\x9f\x5e" "\xfb\xff\xce\x92\x74\x60\x7c\xfd\xfc\xb5\xfd\x0f\x3f\xfe\xfb\x6f\xd7" "\x5b\xf5\xff\x67\xda\xd7\x6b\xe9\x39\xde\xe1\x38\x5c\x8b\xd7\xce\x3f" "\x8e\xc3\xf9\x73\xef\x50\x18\x5e\x4e\x7b\x33\x0e\xff\x3d\x4b\x1f\xf5" "\xfb\x1d\x30\x49\xf2\xf6\x33\xf2\xdf\xf7\x7b\x4b\xd2\x81\xf1\x95\xde" "\xf3\xb2\x7f\xc3\x04\xaa\x74\x6f\xb1\x27\x7f\xde\xd6\xab\xdd\xaa\x5e" "\xe7\xf9\x8c\x97\xcf\xc5\xf8\xf3\x31\xfe\x42\x8c\xef\x8f\xf1\x7c\x8c" "\x17\x62\xbc\x3f\xc6\x8b\xeb\x54\x3e\xd6\xc6\xc3\xbf\xfb\xe3\xa1\x17" "\x2b\x2b\xd7\xfb\xdb\xb3\xf4\x7e\xdf\x27\xcf\xeb\x03\xe5\xed\x44\x1d" "\xe8\xb3\x3c\xf9\xfd\x81\x41\xdf\x67\xcf\xdb\xf1\x1b\xd4\x6a\xf3\xbf" "\xc9\xea\x60\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x43\x53\x6d\xfe\x5d\x5a" "\x9a\xab\x84\x70\xf1\x8d\x97\x8f\x3c\x76\xec\xd4\xc2\xf2\x98\x07\xdb" "\x53\xd4\x9b\x7f\xa7\x0b\x43\xb5\xf6\xf7\x42\x78\x20\xc6\x53\x31\xfe" "\x65\xfc\x70\xed\xbd\xe7\x4f\x14\xe3\xeb\x31\xae\x84\xc5\x50\x09\x95" "\xf6\xf8\xf0\xe8\xd5\x76\x4e\x5b\x43\x08\xe7\xc2\xde\x70\x29\xd4\xc3" "\xee\x8b\x97\x5f\x7a\x6b\xf1\x91\x63\xe7\x8f\x5e\xd8\xf7\xf6\xab\x87" "\xae\xac\xdd\x1a\x00\x00\x00\x80\x8d\xef\xff\x01\x00\x00\xff\xff\x84" "\x2f\x19\xe0", 2740)); NONFAILING(syz_mount_image(/*fs=*/0x2000000000c0, /*dir=*/0x200000000180, /*flags=*/0, /*opts=*/0x200000000340, /*chdir=*/2, /*size=*/0xab4, /*img=*/0x200000000400)); break; case 1: NONFAILING( memcpy((void*)0x2000000004c0, "\351\037q\211Y\036\2223aK\000", 11)); NONFAILING(syz_mount_image( /*fs=*/0, /*dir=*/0x2000000004c0, /*flags=MS_LAZYTIME|MS_I_VERSION|MS_UNBINDABLE|MS_STRICTATIME|MS_REMOUNT|MS_RELATIME|0x1800*/ 0x3a21820, /*opts=*/0, /*chdir=*/0x24, /*size=*/0, /*img=*/0x200000000000)); break; case 2: NONFAILING(memcpy((void*)0x2000000079c0, "./file0\000", 8)); syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x2000000079c0ul, /*flags=O_CREAT|O_APPEND|O_WRONLY*/ 0x441, /*mode=S_IROTH|S_IRUSR*/ 0x104); break; case 3: NONFAILING(memcpy((void*)0x200000000000, ".\000", 2)); res = syscall(__NR_fspick, /*dfd=*/0xffffff9c, /*path=*/0x200000000000ul, /*flags=*/0ul); if (res != -1) r[0] = res; break; case 4: syscall(__NR_fsconfig, /*fd=*/r[0], /*cmd=*/7ul, /*key=*/0ul, /*value=*/0ul, /*aux=*/0ul); break; } } 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; install_segv_handler(); for (procid = 0; procid < 4; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }