// https://syzkaller.appspot.com/bug?id=899b37f20ce4072bcdfecfe1647b39602e956e36 // 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_memfd_create #define __NR_memfd_create 319 #endif static unsigned long long procid; static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { int state; } event_t; static void event_init(event_t* ev) { ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { if (ev->state) exit(1); __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); } static void event_wait(event_t* ev) { while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); } static int event_isset(event_t* ev) { return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; for (;;) { uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) return 1; now = current_time_ms(); if (now - start > timeout) return 0; } } static bool write_file(const char* file, const char* what, ...) { char buf[1024]; va_list args; va_start(args, what); vsnprintf(buf, sizeof(buf), what, args); va_end(args); buf[sizeof(buf) - 1] = 0; int len = strlen(buf); int fd = open(file, O_WRONLY | O_CLOEXEC); if (fd == -1) return false; if (write(fd, buf, len) != len) { int err = errno; close(fd); errno = err; return false; } close(fd); return true; } #define SIZEOF_IO_URING_SQE 64 #define SIZEOF_IO_URING_CQE 16 #define IORING_SETUP_SQE128 (1U << 10) #define IORING_SETUP_CQE32 (1U << 11) struct io_sqring_offsets { uint32_t head; uint32_t tail; uint32_t ring_mask; uint32_t ring_entries; uint32_t flags; uint32_t dropped; uint32_t array; uint32_t resv1; uint64_t user_addr; }; struct io_cqring_offsets { uint32_t head; uint32_t tail; uint32_t ring_mask; uint32_t ring_entries; uint32_t overflow; uint32_t cqes; uint32_t flags; uint32_t resv1; uint64_t user_addr; }; struct io_uring_params { uint32_t sq_entries; uint32_t cq_entries; uint32_t flags; uint32_t sq_thread_cpu; uint32_t sq_thread_idle; uint32_t features; uint32_t resv[4]; struct io_sqring_offsets sq_off; struct io_cqring_offsets cq_off; }; static long io_uring_sqe_size(struct io_uring_params* params) { return SIZEOF_IO_URING_SQE << !!(params->flags & IORING_SETUP_SQE128); } static long io_uring_cqe_size(struct io_uring_params* params) { return SIZEOF_IO_URING_CQE << !!(params->flags & IORING_SETUP_CQE32); } #define IORING_OFF_SQ_RING 0ULL #define IORING_OFF_SQES 0x10000000ULL static long syz_io_uring_setup(volatile long a0, volatile long a1, volatile long a2, volatile long a3, volatile long a4) { uint32_t entries = (uint32_t)a0; struct io_uring_params* setup_params = (struct io_uring_params*)a1; void** ring_params_ptr_out = (void**)a2; void** ring_ptr_out = (void**)a3; void** sqes_ptr_out = (void**)a4; uint32_t fd_io_uring = syscall(__NR_io_uring_setup, entries, setup_params); *ring_params_ptr_out = (void*)setup_params; uint32_t sq_ring_sz = setup_params->sq_off.array + setup_params->sq_entries * sizeof(uint32_t); uint32_t cq_ring_sz = setup_params->cq_off.cqes + setup_params->cq_entries * io_uring_cqe_size(setup_params); uint32_t ring_sz = sq_ring_sz > cq_ring_sz ? sq_ring_sz : cq_ring_sz; *ring_ptr_out = mmap(0, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd_io_uring, IORING_OFF_SQ_RING); uint32_t sqes_sz = setup_params->sq_entries * io_uring_sqe_size(setup_params); *sqes_ptr_out = mmap(0, sqes_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd_io_uring, IORING_OFF_SQES); uint32_t* array = (uint32_t*)((uintptr_t)*ring_ptr_out + setup_params->sq_off.array); for (uint32_t index = 0; index < setup_params->sq_entries; index++) array[index] = index; return fd_io_uring; } static long syz_ublk_setup_io_uring(volatile long a0, volatile long a1, volatile long a2, volatile long a3, volatile long a4) { struct io_uring_params* params = (struct io_uring_params*)a1; params->flags |= IORING_SETUP_SQE128 | IORING_SETUP_CQE32; return syz_io_uring_setup(a0, (long)params, a2, a3, a4); } //% This code is derived from puff.{c,h}, found in the zlib development. The //% original files come with the following copyright notice: //% Copyright (C) 2002-2013 Mark Adler, all rights reserved //% version 2.3, 21 Jan 2013 //% This software is provided 'as-is', without any express or implied //% warranty. In no event will the author be held liable for any damages //% arising from the use of this software. //% Permission is granted to anyone to use this software for any purpose, //% including commercial applications, and to alter it and redistribute it //% freely, subject to the following restrictions: //% 1. The origin of this software must not be misrepresented; you must not //% claim that you wrote the original software. If you use this software //% in a product, an acknowledgment in the product documentation would be //% appreciated but is not required. //% 2. Altered source versions must be plainly marked as such, and must not be //% misrepresented as being the original software. //% 3. This notice may not be removed or altered from any source distribution. //% Mark Adler madler@alumni.caltech.edu //% BEGIN CODE DERIVED FROM puff.{c,h} #define MAXBITS 15 #define MAXLCODES 286 #define MAXDCODES 30 #define MAXCODES (MAXLCODES + MAXDCODES) #define FIXLCODES 288 struct puff_state { unsigned char* out; unsigned long outlen; unsigned long outcnt; const unsigned char* in; unsigned long inlen; unsigned long incnt; int bitbuf; int bitcnt; jmp_buf env; }; static int puff_bits(struct puff_state* s, int need) { long val = s->bitbuf; while (s->bitcnt < need) { if (s->incnt == s->inlen) longjmp(s->env, 1); val |= (long)(s->in[s->incnt++]) << s->bitcnt; s->bitcnt += 8; } s->bitbuf = (int)(val >> need); s->bitcnt -= need; return (int)(val & ((1L << need) - 1)); } static int puff_stored(struct puff_state* s) { s->bitbuf = 0; s->bitcnt = 0; if (s->incnt + 4 > s->inlen) return 2; unsigned len = s->in[s->incnt++]; len |= s->in[s->incnt++] << 8; if (s->in[s->incnt++] != (~len & 0xff) || s->in[s->incnt++] != ((~len >> 8) & 0xff)) return -2; if (s->incnt + len > s->inlen) return 2; if (s->outcnt + len > s->outlen) return 1; for (; len--; s->outcnt++, s->incnt++) { if (s->in[s->incnt]) s->out[s->outcnt] = s->in[s->incnt]; } return 0; } struct puff_huffman { short* count; short* symbol; }; static int puff_decode(struct puff_state* s, const struct puff_huffman* h) { int first = 0; int index = 0; int bitbuf = s->bitbuf; int left = s->bitcnt; int code = first = index = 0; int len = 1; short* next = h->count + 1; while (1) { while (left--) { code |= bitbuf & 1; bitbuf >>= 1; int count = *next++; if (code - count < first) { s->bitbuf = bitbuf; s->bitcnt = (s->bitcnt - len) & 7; return h->symbol[index + (code - first)]; } index += count; first += count; first <<= 1; code <<= 1; len++; } left = (MAXBITS + 1) - len; if (left == 0) break; if (s->incnt == s->inlen) longjmp(s->env, 1); bitbuf = s->in[s->incnt++]; if (left > 8) left = 8; } return -10; } static int puff_construct(struct puff_huffman* h, const short* length, int n) { int len; for (len = 0; len <= MAXBITS; len++) h->count[len] = 0; int symbol; for (symbol = 0; symbol < n; symbol++) (h->count[length[symbol]])++; if (h->count[0] == n) return 0; int left = 1; for (len = 1; len <= MAXBITS; len++) { left <<= 1; left -= h->count[len]; if (left < 0) return left; } short offs[MAXBITS + 1]; offs[1] = 0; for (len = 1; len < MAXBITS; len++) offs[len + 1] = offs[len] + h->count[len]; for (symbol = 0; symbol < n; symbol++) if (length[symbol] != 0) h->symbol[offs[length[symbol]]++] = symbol; return left; } static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode, const struct puff_huffman* distcode) { static const short lens[29] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258}; static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; static const short dists[30] = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}; static const short dext[30] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; int symbol; do { symbol = puff_decode(s, lencode); if (symbol < 0) return symbol; if (symbol < 256) { if (s->outcnt == s->outlen) return 1; if (symbol) s->out[s->outcnt] = symbol; s->outcnt++; } else if (symbol > 256) { symbol -= 257; if (symbol >= 29) return -10; int len = lens[symbol] + puff_bits(s, lext[symbol]); symbol = puff_decode(s, distcode); if (symbol < 0) return symbol; unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]); if (dist > s->outcnt) return -11; if (s->outcnt + len > s->outlen) return 1; while (len--) { if (dist <= s->outcnt && s->out[s->outcnt - dist]) s->out[s->outcnt] = s->out[s->outcnt - dist]; s->outcnt++; } } } while (symbol != 256); return 0; } static int puff_fixed(struct puff_state* s) { static int virgin = 1; static short lencnt[MAXBITS + 1], lensym[FIXLCODES]; static short distcnt[MAXBITS + 1], distsym[MAXDCODES]; static struct puff_huffman lencode, distcode; if (virgin) { lencode.count = lencnt; lencode.symbol = lensym; distcode.count = distcnt; distcode.symbol = distsym; short lengths[FIXLCODES]; int symbol; for (symbol = 0; symbol < 144; symbol++) lengths[symbol] = 8; for (; symbol < 256; symbol++) lengths[symbol] = 9; for (; symbol < 280; symbol++) lengths[symbol] = 7; for (; symbol < FIXLCODES; symbol++) lengths[symbol] = 8; puff_construct(&lencode, lengths, FIXLCODES); for (symbol = 0; symbol < MAXDCODES; symbol++) lengths[symbol] = 5; puff_construct(&distcode, lengths, MAXDCODES); virgin = 0; } return puff_codes(s, &lencode, &distcode); } static int puff_dynamic(struct puff_state* s) { static const short order[19] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; int nlen = puff_bits(s, 5) + 257; int ndist = puff_bits(s, 5) + 1; int ncode = puff_bits(s, 4) + 4; if (nlen > MAXLCODES || ndist > MAXDCODES) return -3; short lengths[MAXCODES]; int index; for (index = 0; index < ncode; index++) lengths[order[index]] = puff_bits(s, 3); for (; index < 19; index++) lengths[order[index]] = 0; short lencnt[MAXBITS + 1], lensym[MAXLCODES]; struct puff_huffman lencode = {lencnt, lensym}; int err = puff_construct(&lencode, lengths, 19); if (err != 0) return -4; index = 0; while (index < nlen + ndist) { int symbol; int len; symbol = puff_decode(s, &lencode); if (symbol < 0) return symbol; if (symbol < 16) lengths[index++] = symbol; else { len = 0; if (symbol == 16) { if (index == 0) return -5; len = lengths[index - 1]; symbol = 3 + puff_bits(s, 2); } else if (symbol == 17) symbol = 3 + puff_bits(s, 3); else symbol = 11 + puff_bits(s, 7); if (index + symbol > nlen + ndist) return -6; while (symbol--) lengths[index++] = len; } } if (lengths[256] == 0) return -9; err = puff_construct(&lencode, lengths, nlen); if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1])) return -7; short distcnt[MAXBITS + 1], distsym[MAXDCODES]; struct puff_huffman distcode = {distcnt, distsym}; err = puff_construct(&distcode, lengths + nlen, ndist); if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1])) return -8; return puff_codes(s, &lencode, &distcode); } static int puff(unsigned char* dest, unsigned long* destlen, const unsigned char* source, unsigned long sourcelen) { struct puff_state s = { .out = dest, .outlen = *destlen, .outcnt = 0, .in = source, .inlen = sourcelen, .incnt = 0, .bitbuf = 0, .bitcnt = 0, }; int err; if (setjmp(s.env) != 0) err = 2; else { int last; do { last = puff_bits(&s, 1); int type = puff_bits(&s, 2); err = type == 0 ? puff_stored(&s) : (type == 1 ? puff_fixed(&s) : (type == 2 ? puff_dynamic(&s) : -1)); if (err != 0) break; } while (!last); } *destlen = s.outcnt; return err; } //% END CODE DERIVED FROM puff.{c,h} #define ZLIB_HEADER_WIDTH 2 static int puff_zlib_to_file(const unsigned char* source, unsigned long sourcelen, int dest_fd) { if (sourcelen < ZLIB_HEADER_WIDTH) return 0; source += ZLIB_HEADER_WIDTH; sourcelen -= ZLIB_HEADER_WIDTH; const unsigned long max_destlen = 132 << 20; void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0); if (ret == MAP_FAILED) return -1; unsigned char* dest = (unsigned char*)ret; unsigned long destlen = max_destlen; int err = puff(dest, &destlen, source, sourcelen); if (err) { munmap(dest, max_destlen); errno = -err; return -1; } if (write(dest_fd, dest, destlen) != (ssize_t)destlen) { munmap(dest, max_destlen); return -1; } return munmap(dest, max_destlen); } static int setup_loop_device(unsigned char* data, unsigned long size, const char* loopname, int* loopfd_p) { int err = 0, loopfd = -1; int memfd = syscall(__NR_memfd_create, "syzkaller", 0); if (memfd == -1) { err = errno; goto error; } if (puff_zlib_to_file(data, size, memfd)) { err = errno; goto error_close_memfd; } loopfd = open(loopname, O_RDWR); if (loopfd == -1) { err = errno; goto error_close_memfd; } if (ioctl(loopfd, LOOP_SET_FD, memfd)) { if (errno != EBUSY) { err = errno; goto error_close_loop; } ioctl(loopfd, LOOP_CLR_FD, 0); usleep(1000); if (ioctl(loopfd, LOOP_SET_FD, memfd)) { err = errno; goto error_close_loop; } } close(memfd); *loopfd_p = loopfd; return 0; error_close_loop: close(loopfd); error_close_memfd: close(memfd); error: errno = err; return -1; } static void reset_loop_device(const char* loopname) { int loopfd = open(loopname, O_RDWR); if (loopfd == -1) { return; } if (ioctl(loopfd, LOOP_CLR_FD, 0)) { } close(loopfd); } static long syz_mount_image(volatile long fsarg, volatile long dir, volatile long flags, volatile long optsarg, volatile long change_dir, volatile unsigned long size, volatile long image) { unsigned char* data = (unsigned char*)image; int res = -1, err = 0, need_loop_device = !!size; char* mount_opts = (char*)optsarg; char* target = (char*)dir; char* fs = (char*)fsarg; char* source = NULL; char loopname[64]; if (need_loop_device) { int loopfd; memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; close(loopfd); source = loopname; } mkdir(target, 0777); char opts[256]; memset(opts, 0, sizeof(opts)); if (strlen(mount_opts) > (sizeof(opts) - 32)) { } strncpy(opts, mount_opts, sizeof(opts) - 32); if (strcmp(fs, "iso9660") == 0) { flags |= MS_RDONLY; } else if (strncmp(fs, "ext", 3) == 0) { bool has_remount_ro = false; char* remount_ro_start = strstr(opts, "errors=remount-ro"); if (remount_ro_start != NULL) { char after = *(remount_ro_start + strlen("errors=remount-ro")); char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1); has_remount_ro = ((before == '\0' || before == ',') && (after == '\0' || after == ',')); } if (strstr(opts, "errors=panic") || !has_remount_ro) strcat(opts, ",errors=continue"); } else if (strcmp(fs, "xfs") == 0) { strcat(opts, ",nouuid"); } else if (strncmp(fs, "gfs2", 4) == 0 && (strstr(opts, "errors=panic") || strstr(opts, "debug"))) { strcat(opts, ",errors=withdraw"); } res = mount(source, target, fs, flags, opts); if (res == -1) { err = errno; goto error_clear_loop; } res = open(target, O_RDONLY | O_DIRECTORY); if (res == -1) { err = errno; goto error_clear_loop; } if (change_dir) { res = chdir(target); if (res == -1) { err = errno; } } error_clear_loop: if (need_loop_device) reset_loop_device(loopname); errno = err; return res; } #define FS_IOC_SETFLAGS _IOW('f', 2, long) static void remove_dir(const char* dir) { int iter = 0; DIR* dp = 0; const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; retry: while (umount2(dir, umount_flags) == 0) { } dp = opendir(dir); if (dp == NULL) { if (errno == EMFILE) { exit(1); } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); while (umount2(filename, umount_flags) == 0) { } struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } int i; for (i = 0;; i++) { if (unlink(filename) == 0) break; if (errno == EPERM) { int fd = open(filename, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno != EBUSY || i > 100) exit(1); if (umount2(filename, umount_flags)) exit(1); } } closedir(dp); for (int i = 0;; i++) { if (rmdir(dir) == 0) break; if (i < 100) { if (errno == EPERM) { int fd = open(dir, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno == EBUSY) { if (umount2(dir, umount_flags)) exit(1); continue; } if (errno == ENOTEMPTY) { if (iter < 100) { iter++; goto retry; } } } exit(1); } } static void kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); for (int i = 0; i < 100; i++) { if (waitpid(-1, status, WNOHANG | __WALL) == pid) return; usleep(1000); } DIR* dir = opendir("/sys/fs/fuse/connections"); if (dir) { for (;;) { struct dirent* ent = readdir(dir); if (!ent) break; if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) continue; char abort[300]; snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", ent->d_name); int fd = open(abort, O_WRONLY); if (fd == -1) { continue; } if (write(fd, abort, 1) < 0) { } close(fd); } closedir(dir); } else { } while (waitpid(-1, status, __WALL) != pid) { } } static void reset_loop() { char buf[64]; snprintf(buf, sizeof(buf), "/dev/loop%llu", procid); int loopfd = open(buf, O_RDWR); if (loopfd != -1) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } } static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); write_file("/proc/self/oom_score_adj", "1000"); if (symlink("/dev/binderfs", "./binderfs")) { } } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 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)); 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: // syz_mount_image$ext4 arguments: [ // fs: ptr[in, buffer] { // buffer: {65 78 74 34 00} (length 0x5) // } // dir: ptr[in, buffer] { // buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8) // } // flags: mount_flags = 0x210000 (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 { // user_xattr: buffer: {75 73 65 72 5f 78 61 74 74 72} (length // 0xa) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // noquota: buffer: {6e 6f 71 75 6f 74 61} (length 0x7) // } // 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 { // jqfmt_vfsv1: buffer: {6a 71 66 6d 74 3d 76 66 73 76 31} // (length 0xb) // } // 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 = 0x70 (18 bytes) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // max_dir_size_kb: fs_opt["max_dir_size_kb", fmt[hex, int32]] // { // name: buffer: {6d 61 78 5f 64 69 72 5f 73 69 7a 65 5f 6b // 62} (length 0xf) eq: const = 0x3d (1 bytes) val: int32 = // 0x7b1 (18 bytes) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // stripe: fs_opt["stripe", fmt[hex, int32]] { // name: buffer: {73 74 72 69 70 65} (length 0x6) // eq: const = 0x3d (1 bytes) // val: int32 = 0x20 (18 bytes) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // bsdgroups: buffer: {62 73 64 67 72 6f 75 70 73} (length 0x9) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // max_batch_time: fs_opt["max_batch_time", fmt[hex, int32]] { // name: buffer: {6d 61 78 5f 62 61 74 63 68 5f 74 69 6d 65} // (length 0xe) eq: const = 0x3d (1 bytes) val: int32 = 0x3fe // (18 bytes) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // user_xattr: buffer: {75 73 65 72 5f 78 61 74 74 72} (length // 0xa) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[ext4_options] { // elem: union ext4_options { // noinit_itable: buffer: {6e 6f 69 6e 69 74 5f 69 74 61 62 6c // 65} (length 0xd) // } // comma: const = 0x2c (1 bytes) // } // } // common: array[fs_opt_elem[fs_options_common]] { // } // null: const = 0x0 (1 bytes) // } // } // chdir: int8 = 0x3 (1 bytes) // size: len = 0x589 (8 bytes) // img: ptr[in, buffer] { // buffer: (compressed buffer with length 0x589) // } // ] // returns fd_dir memcpy((void*)0x200000000040, "ext4\000", 5); memcpy((void*)0x200000000200, "./file1\000", 8); memcpy((void*)0x200000000280, "user_xattr", 10); *(uint8_t*)0x20000000028a = 0x2c; memcpy((void*)0x20000000028b, "noquota", 7); *(uint8_t*)0x200000000292 = 0x2c; memcpy((void*)0x200000000293, "dioread_nolock", 14); *(uint8_t*)0x2000000002a1 = 0x2c; memcpy((void*)0x2000000002a2, "jqfmt=vfsv1", 11); *(uint8_t*)0x2000000002ad = 0x2c; memcpy((void*)0x2000000002ae, "debug_want_extra_isize", 22); *(uint8_t*)0x2000000002c4 = 0x3d; sprintf((char*)0x2000000002c5, "0x%016llx", (long long)0x70); *(uint8_t*)0x2000000002d7 = 0x2c; memcpy((void*)0x2000000002d8, "max_dir_size_kb", 15); *(uint8_t*)0x2000000002e7 = 0x3d; sprintf((char*)0x2000000002e8, "0x%016llx", (long long)0x7b1); *(uint8_t*)0x2000000002fa = 0x2c; memcpy((void*)0x2000000002fb, "stripe", 6); *(uint8_t*)0x200000000301 = 0x3d; sprintf((char*)0x200000000302, "0x%016llx", (long long)0x20); *(uint8_t*)0x200000000314 = 0x2c; memcpy((void*)0x200000000315, "bsdgroups", 9); *(uint8_t*)0x20000000031e = 0x2c; memcpy((void*)0x20000000031f, "max_batch_time", 14); *(uint8_t*)0x20000000032d = 0x3d; sprintf((char*)0x20000000032e, "0x%016llx", (long long)0x3fe); *(uint8_t*)0x200000000340 = 0x2c; memcpy((void*)0x200000000341, "user_xattr", 10); *(uint8_t*)0x20000000034b = 0x2c; memcpy((void*)0x20000000034c, "noinit_itable", 13); *(uint8_t*)0x200000000359 = 0x2c; *(uint8_t*)0x20000000035a = 0; memcpy( (void*)0x2000000083c0, "\x78\x9c\xec\xdd\xcd\x6b\x1c\xe5\x1f\x00\xf0\xef\x6c\x76\xfb\xfe\xfb" "\x35\x85\x52\xac\x88\x14\x7a\xb0\x52\xbb\x69\x12\x5f\x2a\x78\xa8\x47" "\xd1\x62\x41\x3d\xd7\x90\x6c\x43\xc9\xa6\x5b\xb2\x9b\xd2\xc4\x82\xed" "\xc1\x5e\xbc\x48\x11\x44\x2c\x88\x77\xbd\x7b\xf0\x50\xbc\x78\xf4\xaf" "\x28\x68\xa1\x48\x09\x0a\x7a\x59\x99\xcd\x6c\xb2\x69\x36\xc9\x66\xb3" "\x31\x69\xf7\xf3\x81\x49\x9e\x67\x66\x76\x9f\x79\xe6\x99\xef\xc3\x33" "\xfb\xec\x32\x01\xf4\xad\x13\xe9\x9f\x5c\xc4\xf1\x88\xf8\x22\x89\x38" "\xdc\xb2\x2d\x1f\xd9\xc6\x13\x8b\xfb\x2d\x3c\xbe\x39\x9e\x2e\x49\xd4" "\xeb\x1f\xfc\x91\x44\x92\xad\x6b\xee\x9f\x64\xff\x0f\x66\x99\xe7\x22" "\xe2\xe7\xcf\x22\x4e\xe7\x56\x97\x5b\x9d\x9b\x9f\x1a\x2b\x97\x4b\x33" "\x59\x7e\xa8\x36\x7d\x6d\xa8\x3a\x37\x7f\xe6\xca\xf4\xd8\x64\x69\xb2" "\x74\x75\x64\x74\xf4\xdc\x6b\xa3\x23\x6f\xbe\xf1\x7a\xcf\xea\xfa\xf2" "\xc5\xbf\xbe\x7e\xff\xfe\x3b\xe7\x3e\x3f\xb9\xf0\xd5\x0f\x0f\x8f\xdc" "\x4d\xe2\x7c\x1c\xca\xb6\xb5\xd6\x63\x53\xf6\xae\xc8\xdd\x6a\xcd\x9c" "\xa8\xd7\xb3\x73\x52\x88\xf3\x4f\xbc\x6c\xb8\xab\xc2\x76\xaf\x64\xa7" "\x0f\x80\xae\x0c\x64\x71\x5e\x88\x88\xe3\x85\xc3\x85\x66\xd4\x03\xcf" "\xbe\x4f\x23\xa2\x0e\xf4\xa9\x64\x93\xf1\xbf\x57\x7f\x01\xcf\x88\xe6" "\x38\xa0\x79\x6f\xdf\xf5\x7d\xf0\x53\xea\xd1\xdb\x8b\x37\x40\xab\xeb" "\x9f\x5f\xfc\x6c\x24\xf6\x35\xee\x8d\x0e\x2c\x24\x2b\xee\x8c\xd2\xfb" "\xdd\xc1\x1e\x94\x9f\x96\xf1\xe3\xef\xf7\xee\xa6\x4b\x6c\xe5\x73\x08" "\x80\x4d\xba\x75\x3b\x22\xce\xe6\xf3\xab\xfb\xbf\x24\xeb\xff\xba\x77" "\xb6\x83\x7d\x9e\x2c\x43\xff\x07\xff\x9d\xfb\xe9\xf8\xe7\x95\x76\xe3" "\x9f\xdc\xd2\xf8\x27\xda\x8c\x7f\x0e\xb6\x89\xdd\x6e\x6c\x1c\xff\xb9" "\x87\x3d\x28\x66\x4d\xe9\xf8\xef\xad\xb6\xe3\xdf\xa5\x49\xab\xc1\x81" "\x2c\xf7\xbf\xc6\x98\xaf\x90\x5c\xbe\x52\x2e\xa5\x7d\xdb\xff\x23\xe2" "\x54\x14\xf6\xa6\xf9\xf5\xe6\x73\xce\x2d\x3c\xa8\xaf\xb5\xad\x75\xfc" "\x97\x2e\x69\xf9\xcd\xb1\x60\x76\x1c\x0f\xf3\x2b\xe7\x98\x62\x62\xac" "\x36\xb6\x95\x3a\xb7\x7a\x74\x3b\xe2\xf9\xb6\xe3\xdf\x64\xa9\xfd\x93" "\x36\xed\x9f\x9e\x8f\x8f\x3a\x2c\xe3\x58\xe9\xde\x8b\x6b\x6d\xdb\xb8" "\xfe\xdb\xab\xfe\x5d\xc4\x4b\x6d\xdb\x7f\x79\x46\x2b\x59\x7f\x7e\x72" "\xa8\x71\x3d\x0c\x35\xaf\x8a\xd5\xfe\xbc\x73\xec\xd7\xb5\xca\x6f\x5f" "\xff\x5f\x7e\xda\x86\xaa\xb6\x95\xb6\xff\x81\xf5\xeb\x3f\x98\xb4\xce" "\xd7\x56\x37\x5f\xc6\xb7\xfb\xfe\x29\xad\xb5\xad\xdb\xeb\x7f\x4f\xf2" "\x61\x23\xbd\x27\x5b\x77\x63\xac\x56\x9b\x19\x8e\xd8\x93\xbc\xb7\x7a" "\xfd\xc8\xf2\x6b\x9b\xf9\xe6\xfe\x69\xfd\x4f\x9d\x5c\xbf\xff\x6b\x77" "\xfd\xef\x8f\x88\x8f\x3b\xac\xff\x9d\xa3\xdf\xbf\xd0\x7d\xfd\xb7\x57" "\x5a\xff\x89\x4d\xb5\xff\xe6\x13\x0f\xde\xfd\xe4\x9b\xb5\xca\xef\xac" "\xfd\x5f\x6d\xa4\x4e\x65\x6b\x3a\xe9\xff\x3a\x3d\xc0\xad\x9c\x3b\x00" "\x00\x00\x00\x00\x00\xd8\x6d\x72\x11\x71\x28\x92\x5c\x31\xf6\x65\xe9" "\x5c\xae\x58\x5c\xfc\x7e\xc7\xd1\x38\x90\x2b\x57\xaa\xb5\xd3\x97\x2b" "\xb3\x57\x27\xa2\xf1\x5b\xd9\xc1\x28\xe4\x9a\x33\xdd\x87\x5b\xbe\x0f" "\x31\x9c\x7d\x1f\xb6\x99\x1f\x79\x22\x3f\x1a\x11\x47\x22\xe2\xcb\x81" "\xfd\x8d\x7c\x71\xbc\x52\x9e\xd8\xe9\xca\x03\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\xc0\x2e\x71\x70\xe9\xf7\xff\xb1\xe2" "\xf7\xff\xa9\xdf\x06\x76\xfa\xe8\x80\x6d\x97\x5f\x7c\xfe\x37\xd0\x87" "\x36\x7c\xe4\x7f\x2f\x9e\xf4\x04\xec\x4a\x1b\xc6\x3f\xf0\xcc\x12\xff" "\xd0\xbf\xc4\x3f\xf4\x2f\xf1\x0f\x7d\xa9\x31\xc5\x27\xfe\xa1\x7f\x89" "\x7f\xe8\x5f\xe2\x1f\xfa\x97\xf8\x07\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x9e\xba\x78\xe1" "\x42\xba\xd4\x17\x1e\xdf\x1c\x4f\xf3\x13\xd7\xe7\x66\xa7\x2a\xd7\xcf" "\x4c\x94\xaa\x53\xc5\xe9\xd9\xf1\xe2\x78\x65\xe6\x5a\x71\xb2\x52\x99" "\x2c\x97\x8a\xe3\x95\xe9\x8d\xde\xaf\x5c\xa9\x5c\x1b\x1e\x89\xd9\x1b" "\x43\xb5\x52\xb5\x36\x54\x9d\x9b\xbf\x34\x5d\x99\xbd\x5a\xbb\x74\x65" "\x7a\x6c\xb2\x74\xa9\xe4\x39\xe3\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\xb0\x5a\x75\x6e\x7e\x6a\xac\x5c\x2e\xcd\xf4" "\x20\x51\x28\x97\x4b\xb9\x88\xe8\x64\xe7\x88\x1e\x15\xfa\xd4\x25\xfe" "\xde\xf2\xfb\xa4\xed\x76\x2b\xdf\xd9\x79\xde\x9e\x44\x12\xcb\x6b\xf2" "\xbb\xe2\xac\x4a\xf4\x3a\xb1\xd3\x3d\x13\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2c\xfb\x37\x00\x00" "\xff\xff\x31\x4c\x32\xa4", 1417); syz_mount_image(/*fs=*/0x200000000040, /*dir=*/0x200000000200, /*flags=MS_POSIXACL|MS_RELATIME*/ 0x210000, /*opts=*/0x200000000280, /*chdir=*/3, /*size=*/0x589, /*img=*/0x2000000083c0); break; case 1: // openat arguments: [ // fd: fd_dir (resource) // file: ptr[in, buffer] { // buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8) // } // flags: open_flags = 0x181c42 (4 bytes) // mode: open_mode = 0x56 (2 bytes) // ] // returns fd memcpy((void*)0x200000000040, "./file1\000", 8); res = syscall( __NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul, /*flags=O_SYNC|O_NONBLOCK|O_CREAT|O_CLOEXEC|O_APPEND|0x2*/ 0x181c42, /*mode=S_IWOTH|S_IROTH|S_IWGRP|S_IXUSR*/ 0x56); if (res != -1) r[0] = res; break; case 2: // write$uinput_user_dev arguments: [ // fd: fd_uinput (resource) // data: ptr[in, uinput_user_dev] { // uinput_user_dev { // name: buffer: {73 79 7a 30 00 00 00 00 00 00 00 00 00 00 00 00 00 // 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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 // 0x50) id: input_id { // bustype: int16 = 0x807 (2 bytes) // vendor: int16 = 0x83 (2 bytes) // product: int16 = 0x6 (2 bytes) // version: int16 = 0xfffa (2 bytes) // } // ff_effects_max: int32 = 0x2000001d (4 bytes) // absmax: array[int32] { // int32 = 0x8000 (4 bytes) // int32 = 0xc95a (4 bytes) // int32 = 0x12 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x80 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x7f (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x49 (4 bytes) // int32 = 0x39cc191b (4 bytes) // int32 = 0x5f (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xffff2d37 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x46 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x3c5b (4 bytes) // int32 = 0x90 (4 bytes) // int32 = 0x24 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0xffffffff (4 bytes) // int32 = 0x1f461e2c (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0xe661 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0xffff0001 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x4c74 (4 bytes) // int32 = 0x80000000 (4 bytes) // int32 = 0x242 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0xe (4 bytes) // int32 = 0x1000 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x41 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0xffffffff (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x8000005 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0xb (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x40 (4 bytes) // } // absmin: array[int32] { // int32 = 0x10000007 (4 bytes) // int32 = 0xffff (4 bytes) // int32 = 0x8000012d (4 bytes) // int32 = 0x8000 (4 bytes) // int32 = 0x10 (4 bytes) // int32 = 0xfffffff3 (4 bytes) // int32 = 0x129432e6 (4 bytes) // int32 = 0xcd (4 bytes) // int32 = 0x40c (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x2bf (4 bytes) // int32 = 0x6c9 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0xfffffffc (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0xeb (4 bytes) // int32 = 0x5573 (4 bytes) // int32 = 0xe (4 bytes) // int32 = 0x312 (4 bytes) // int32 = 0x78 (4 bytes) // int32 = 0xea4 (4 bytes) // int32 = 0x10 (4 bytes) // int32 = 0xda7a (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x8000 (4 bytes) // int32 = 0x2009 (4 bytes) // int32 = 0x400 (4 bytes) // int32 = 0x401 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x5f2e (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x10000008 (4 bytes) // int32 = 0xfffffffc (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x8000 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0xfe000000 (4 bytes) // int32 = 0xffff (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x7f (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x43 (4 bytes) // int32 = 0x42 (4 bytes) // int32 = 0x2 (4 bytes) // } // absfuzz: array[int32] { // int32 = 0x7 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0xfffffffe (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x8d2 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x7fff (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xb (4 bytes) // int32 = 0x20004 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x83 (4 bytes) // int32 = 0x4000003 (4 bytes) // int32 = 0x20000009 (4 bytes) // int32 = 0x3e7 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0xd (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x6d01 (4 bytes) // int32 = 0x8005 (4 bytes) // int32 = 0x9 (4 bytes) // int32 = 0x800000 (4 bytes) // int32 = 0x200 (4 bytes) // int32 = 0x80 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x2950bfaf (4 bytes) // int32 = 0x1000 (4 bytes) // int32 = 0xa2 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xac8 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x7ff (4 bytes) // int32 = 0xfffffff9 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x1c (4 bytes) // int32 = 0x120000 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x8003 (4 bytes) // int32 = 0xa2ed (4 bytes) // int32 = 0x404 (4 bytes) // int32 = 0x25 (4 bytes) // } // absflat: array[int32] { // int32 = 0x9 (4 bytes) // int32 = 0xbb31 (4 bytes) // int32 = 0x296 (4 bytes) // int32 = 0xb (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x938 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xce7 (4 bytes) // int32 = 0x53f53804 (4 bytes) // int32 = 0x0 (4 bytes) // int32 = 0xa (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x101 (4 bytes) // int32 = 0x10000 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x207fff (4 bytes) // int32 = 0xffff (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x2 (4 bytes) // int32 = 0x148 (4 bytes) // int32 = 0x60a7 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0xffffffff (4 bytes) // int32 = 0x80000000 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0xc8 (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0xfffff000 (4 bytes) // int32 = 0x10003 (4 bytes) // int32 = 0x3 (4 bytes) // int32 = 0x7e (4 bytes) // int32 = 0x20100 (4 bytes) // int32 = 0x9602 (4 bytes) // int32 = 0xc639 (4 bytes) // int32 = 0x20000002 (4 bytes) // int32 = 0x4 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x50080 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0x8 (4 bytes) // int32 = 0x1000 (4 bytes) // int32 = 0xa21 (4 bytes) // int32 = 0xc (4 bytes) // int32 = 0x7 (4 bytes) // int32 = 0xce3 (4 bytes) // int32 = 0x6c1b (4 bytes) // int32 = 0x8000 (4 bytes) // int32 = 0x6 (4 bytes) // int32 = 0x5 (4 bytes) // int32 = 0xb1e (4 bytes) // int32 = 0x1 (4 bytes) // int32 = 0x200 (4 bytes) // int32 = 0xffff3441 (4 bytes) // int32 = 0x7 (4 bytes) // } // } // } // len: len = 0x45c (8 bytes) // ] memcpy((void*)0x200000000400, "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000", 80); *(uint16_t*)0x200000000450 = 0x807; *(uint16_t*)0x200000000452 = 0x83; *(uint16_t*)0x200000000454 = 6; *(uint16_t*)0x200000000456 = 0xfffa; *(uint32_t*)0x200000000458 = 0x2000001d; *(uint32_t*)0x20000000045c = 0x8000; *(uint32_t*)0x200000000460 = 0xc95a; *(uint32_t*)0x200000000464 = 0x12; *(uint32_t*)0x200000000468 = 9; *(uint32_t*)0x20000000046c = 0x80; *(uint32_t*)0x200000000470 = 2; *(uint32_t*)0x200000000474 = 3; *(uint32_t*)0x200000000478 = 0x7f; *(uint32_t*)0x20000000047c = 6; *(uint32_t*)0x200000000480 = 0x49; *(uint32_t*)0x200000000484 = 0x39cc191b; *(uint32_t*)0x200000000488 = 0x5f; *(uint32_t*)0x20000000048c = 9; *(uint32_t*)0x200000000490 = 5; *(uint32_t*)0x200000000494 = 0xffff2d37; *(uint32_t*)0x200000000498 = 3; *(uint32_t*)0x20000000049c = 0x46; *(uint32_t*)0x2000000004a0 = 4; *(uint32_t*)0x2000000004a4 = 0; *(uint32_t*)0x2000000004a8 = 4; *(uint32_t*)0x2000000004ac = 8; *(uint32_t*)0x2000000004b0 = 2; *(uint32_t*)0x2000000004b4 = 4; *(uint32_t*)0x2000000004b8 = 0x3c5b; *(uint32_t*)0x2000000004bc = 0x90; *(uint32_t*)0x2000000004c0 = 0x24; *(uint32_t*)0x2000000004c4 = 9; *(uint32_t*)0x2000000004c8 = -1; *(uint32_t*)0x2000000004cc = 0x1f461e2c; *(uint32_t*)0x2000000004d0 = 2; *(uint32_t*)0x2000000004d4 = 0xe661; *(uint32_t*)0x2000000004d8 = 4; *(uint32_t*)0x2000000004dc = 6; *(uint32_t*)0x2000000004e0 = 0xffff0001; *(uint32_t*)0x2000000004e4 = 2; *(uint32_t*)0x2000000004e8 = 0x4c74; *(uint32_t*)0x2000000004ec = 0x80000000; *(uint32_t*)0x2000000004f0 = 0x242; *(uint32_t*)0x2000000004f4 = 0; *(uint32_t*)0x2000000004f8 = 0xe; *(uint32_t*)0x2000000004fc = 0x1000; *(uint32_t*)0x200000000500 = 4; *(uint32_t*)0x200000000504 = 7; *(uint32_t*)0x200000000508 = 7; *(uint32_t*)0x20000000050c = 1; *(uint32_t*)0x200000000510 = 7; *(uint32_t*)0x200000000514 = 0; *(uint32_t*)0x200000000518 = 0x41; *(uint32_t*)0x20000000051c = 3; *(uint32_t*)0x200000000520 = 6; *(uint32_t*)0x200000000524 = 6; *(uint32_t*)0x200000000528 = -1; *(uint32_t*)0x20000000052c = 5; *(uint32_t*)0x200000000530 = 0; *(uint32_t*)0x200000000534 = 8; *(uint32_t*)0x200000000538 = 0; *(uint32_t*)0x20000000053c = 5; *(uint32_t*)0x200000000540 = 0; *(uint32_t*)0x200000000544 = 0x8000005; *(uint32_t*)0x200000000548 = 6; *(uint32_t*)0x20000000054c = 0xb; *(uint32_t*)0x200000000550 = 4; *(uint32_t*)0x200000000554 = 1; *(uint32_t*)0x200000000558 = 0x40; *(uint32_t*)0x20000000055c = 0x10000007; *(uint32_t*)0x200000000560 = 0xffff; *(uint32_t*)0x200000000564 = 0x8000012d; *(uint32_t*)0x200000000568 = 0x8000; *(uint32_t*)0x20000000056c = 0x10; *(uint32_t*)0x200000000570 = 0xfffffff3; *(uint32_t*)0x200000000574 = 0x129432e6; *(uint32_t*)0x200000000578 = 0xcd; *(uint32_t*)0x20000000057c = 0x40c; *(uint32_t*)0x200000000580 = 9; *(uint32_t*)0x200000000584 = 0x2bf; *(uint32_t*)0x200000000588 = 0x6c9; *(uint32_t*)0x20000000058c = 1; *(uint32_t*)0x200000000590 = 0xfffffffc; *(uint32_t*)0x200000000594 = 3; *(uint32_t*)0x200000000598 = 0; *(uint32_t*)0x20000000059c = 7; *(uint32_t*)0x2000000005a0 = 0xeb; *(uint32_t*)0x2000000005a4 = 0x5573; *(uint32_t*)0x2000000005a8 = 0xe; *(uint32_t*)0x2000000005ac = 0x312; *(uint32_t*)0x2000000005b0 = 0x78; *(uint32_t*)0x2000000005b4 = 0xea4; *(uint32_t*)0x2000000005b8 = 0x10; *(uint32_t*)0x2000000005bc = 0xda7a; *(uint32_t*)0x2000000005c0 = 4; *(uint32_t*)0x2000000005c4 = 0x8000; *(uint32_t*)0x2000000005c8 = 0x2009; *(uint32_t*)0x2000000005cc = 0x400; *(uint32_t*)0x2000000005d0 = 0x401; *(uint32_t*)0x2000000005d4 = 6; *(uint32_t*)0x2000000005d8 = 7; *(uint32_t*)0x2000000005dc = 4; *(uint32_t*)0x2000000005e0 = 5; *(uint32_t*)0x2000000005e4 = 5; *(uint32_t*)0x2000000005e8 = 0x5f2e; *(uint32_t*)0x2000000005ec = 4; *(uint32_t*)0x2000000005f0 = 0; *(uint32_t*)0x2000000005f4 = 2; *(uint32_t*)0x2000000005f8 = 2; *(uint32_t*)0x2000000005fc = 9; *(uint32_t*)0x200000000600 = 4; *(uint32_t*)0x200000000604 = 9; *(uint32_t*)0x200000000608 = 0x10000008; *(uint32_t*)0x20000000060c = 0xfffffffc; *(uint32_t*)0x200000000610 = 6; *(uint32_t*)0x200000000614 = 7; *(uint32_t*)0x200000000618 = 0x8000; *(uint32_t*)0x20000000061c = 0; *(uint32_t*)0x200000000620 = 0xfe000000; *(uint32_t*)0x200000000624 = 0xffff; *(uint32_t*)0x200000000628 = 2; *(uint32_t*)0x20000000062c = 0x7f; *(uint32_t*)0x200000000630 = 5; *(uint32_t*)0x200000000634 = 3; *(uint32_t*)0x200000000638 = 3; *(uint32_t*)0x20000000063c = 9; *(uint32_t*)0x200000000640 = 1; *(uint32_t*)0x200000000644 = 7; *(uint32_t*)0x200000000648 = 3; *(uint32_t*)0x20000000064c = 2; *(uint32_t*)0x200000000650 = 0x43; *(uint32_t*)0x200000000654 = 0x42; *(uint32_t*)0x200000000658 = 2; *(uint32_t*)0x20000000065c = 7; *(uint32_t*)0x200000000660 = 3; *(uint32_t*)0x200000000664 = 0; *(uint32_t*)0x200000000668 = 4; *(uint32_t*)0x20000000066c = 0xfffffffe; *(uint32_t*)0x200000000670 = 9; *(uint32_t*)0x200000000674 = 0x8d2; *(uint32_t*)0x200000000678 = 8; *(uint32_t*)0x20000000067c = 5; *(uint32_t*)0x200000000680 = 0x7fff; *(uint32_t*)0x200000000684 = 0; *(uint32_t*)0x200000000688 = 5; *(uint32_t*)0x20000000068c = 0xb; *(uint32_t*)0x200000000690 = 0x20004; *(uint32_t*)0x200000000694 = 5; *(uint32_t*)0x200000000698 = 5; *(uint32_t*)0x20000000069c = 0; *(uint32_t*)0x2000000006a0 = 9; *(uint32_t*)0x2000000006a4 = 5; *(uint32_t*)0x2000000006a8 = 8; *(uint32_t*)0x2000000006ac = 0x83; *(uint32_t*)0x2000000006b0 = 0x4000003; *(uint32_t*)0x2000000006b4 = 0x20000009; *(uint32_t*)0x2000000006b8 = 0x3e7; *(uint32_t*)0x2000000006bc = 9; *(uint32_t*)0x2000000006c0 = 5; *(uint32_t*)0x2000000006c4 = 2; *(uint32_t*)0x2000000006c8 = 2; *(uint32_t*)0x2000000006cc = 3; *(uint32_t*)0x2000000006d0 = 0xd; *(uint32_t*)0x2000000006d4 = 4; *(uint32_t*)0x2000000006d8 = 0x6d01; *(uint32_t*)0x2000000006dc = 0x8005; *(uint32_t*)0x2000000006e0 = 9; *(uint32_t*)0x2000000006e4 = 0x800000; *(uint32_t*)0x2000000006e8 = 0x200; *(uint32_t*)0x2000000006ec = 0x80; *(uint32_t*)0x2000000006f0 = 3; *(uint32_t*)0x2000000006f4 = 4; *(uint32_t*)0x2000000006f8 = 0x2950bfaf; *(uint32_t*)0x2000000006fc = 0x1000; *(uint32_t*)0x200000000700 = 0xa2; *(uint32_t*)0x200000000704 = 7; *(uint32_t*)0x200000000708 = 5; *(uint32_t*)0x20000000070c = 5; *(uint32_t*)0x200000000710 = 5; *(uint32_t*)0x200000000714 = 0xac8; *(uint32_t*)0x200000000718 = 7; *(uint32_t*)0x20000000071c = 2; *(uint32_t*)0x200000000720 = 3; *(uint32_t*)0x200000000724 = 0x7ff; *(uint32_t*)0x200000000728 = 0xfffffff9; *(uint32_t*)0x20000000072c = 4; *(uint32_t*)0x200000000730 = 1; *(uint32_t*)0x200000000734 = 2; *(uint32_t*)0x200000000738 = 3; *(uint32_t*)0x20000000073c = 6; *(uint32_t*)0x200000000740 = 0x1c; *(uint32_t*)0x200000000744 = 0x120000; *(uint32_t*)0x200000000748 = 3; *(uint32_t*)0x20000000074c = 0x8003; *(uint32_t*)0x200000000750 = 0xa2ed; *(uint32_t*)0x200000000754 = 0x404; *(uint32_t*)0x200000000758 = 0x25; *(uint32_t*)0x20000000075c = 9; *(uint32_t*)0x200000000760 = 0xbb31; *(uint32_t*)0x200000000764 = 0x296; *(uint32_t*)0x200000000768 = 0xb; *(uint32_t*)0x20000000076c = 5; *(uint32_t*)0x200000000770 = 0x938; *(uint32_t*)0x200000000774 = 6; *(uint32_t*)0x200000000778 = 6; *(uint32_t*)0x20000000077c = 0; *(uint32_t*)0x200000000780 = 5; *(uint32_t*)0x200000000784 = 0xce7; *(uint32_t*)0x200000000788 = 0x53f53804; *(uint32_t*)0x20000000078c = 0; *(uint32_t*)0x200000000790 = 0xa; *(uint32_t*)0x200000000794 = 5; *(uint32_t*)0x200000000798 = 3; *(uint32_t*)0x20000000079c = 0x101; *(uint32_t*)0x2000000007a0 = 0x10000; *(uint32_t*)0x2000000007a4 = 6; *(uint32_t*)0x2000000007a8 = 0x207fff; *(uint32_t*)0x2000000007ac = 0xffff; *(uint32_t*)0x2000000007b0 = 2; *(uint32_t*)0x2000000007b4 = 2; *(uint32_t*)0x2000000007b8 = 5; *(uint32_t*)0x2000000007bc = 1; *(uint32_t*)0x2000000007c0 = 2; *(uint32_t*)0x2000000007c4 = 0x148; *(uint32_t*)0x2000000007c8 = 0x60a7; *(uint32_t*)0x2000000007cc = 6; *(uint32_t*)0x2000000007d0 = 6; *(uint32_t*)0x2000000007d4 = -1; *(uint32_t*)0x2000000007d8 = 0x80000000; *(uint32_t*)0x2000000007dc = 5; *(uint32_t*)0x2000000007e0 = 8; *(uint32_t*)0x2000000007e4 = 0xc8; *(uint32_t*)0x2000000007e8 = 7; *(uint32_t*)0x2000000007ec = 0xfffff000; *(uint32_t*)0x2000000007f0 = 0x10003; *(uint32_t*)0x2000000007f4 = 3; *(uint32_t*)0x2000000007f8 = 0x7e; *(uint32_t*)0x2000000007fc = 0x20100; *(uint32_t*)0x200000000800 = 0x9602; *(uint32_t*)0x200000000804 = 0xc639; *(uint32_t*)0x200000000808 = 0x20000002; *(uint32_t*)0x20000000080c = 4; *(uint32_t*)0x200000000810 = 6; *(uint32_t*)0x200000000814 = 1; *(uint32_t*)0x200000000818 = 0x50080; *(uint32_t*)0x20000000081c = 5; *(uint32_t*)0x200000000820 = 8; *(uint32_t*)0x200000000824 = 0x1000; *(uint32_t*)0x200000000828 = 0xa21; *(uint32_t*)0x20000000082c = 0xc; *(uint32_t*)0x200000000830 = 7; *(uint32_t*)0x200000000834 = 0xce3; *(uint32_t*)0x200000000838 = 0x6c1b; *(uint32_t*)0x20000000083c = 0x8000; *(uint32_t*)0x200000000840 = 6; *(uint32_t*)0x200000000844 = 5; *(uint32_t*)0x200000000848 = 0xb1e; *(uint32_t*)0x20000000084c = 1; *(uint32_t*)0x200000000850 = 0x200; *(uint32_t*)0x200000000854 = 0xffff3441; *(uint32_t*)0x200000000858 = 7; syscall(__NR_write, /*fd=*/r[0], /*data=*/0x200000000400ul, /*len=*/0x45cul); break; case 3: // mmap arguments: [ // addr: VMA[0xb36000] // len: len = 0xb36000 (4 bytes) // prot: mmap_prot = 0x2 (8 bytes) // flags: mmap_flags = 0x28011 (8 bytes) // fd: fd (resource) // offset: intptr = 0x0 (8 bytes) // ] syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0xb36000, /*prot=PROT_WRITE*/ 2ul, /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul, /*fd=*/r[0], /*offset=*/0ul); break; case 4: // syz_ublk_setup_io_uring arguments: [ // entries: int32 = 0x6dd9 (4 bytes) // params: ptr[inout, io_uring_params] { // io_uring_params { // sq_entries: int32 = 0x0 (4 bytes) // cq_entries: int32 = 0x74d0 (4 bytes) // flags: io_uring_setup_flags = 0x40 (4 bytes) // sq_thread_cpu: int32 = 0x2 (4 bytes) // sq_thread_idle: int32 = 0x3d (4 bytes) // features: int32 = 0x0 (4 bytes) // wq_fd: fd_io_uring (resource) // resv: buffer: {00 00 00 00 00 00 00 00 00 00 00 00} (length 0xc) // sq_off: io_sqring_offsets { // head: int32 = 0x0 (4 bytes) // tail: int32 = 0x0 (4 bytes) // ring_mask: int32 = 0x0 (4 bytes) // ring_entries: int32 = 0x0 (4 bytes) // flags: int32 = 0x0 (4 bytes) // dropped: int32 = 0x0 (4 bytes) // array: int32 = 0x0 (4 bytes) // resv1: int32 = 0x0 (4 bytes) // user_addr: int64 = 0x0 (8 bytes) // } // cq_off: io_cqring_offsets { // head: int32 = 0x0 (4 bytes) // tail: int32 = 0x0 (4 bytes) // ring_mask: int32 = 0x0 (4 bytes) // ring_entries: int32 = 0x0 (4 bytes) // overflow: int32 = 0x0 (4 bytes) // cqes: int32 = 0x0 (4 bytes) // flags: int32 = 0x0 (4 bytes) // resv1: int32 = 0x0 (4 bytes) // user_addr: int64 = 0x0 (8 bytes) // } // } // } // ring_params_ptr: nil // ring_ptr: nil // sqes_ptr: nil // ] // returns fd_io_uring *(uint32_t*)0x200000000244 = 0x74d0; *(uint32_t*)0x200000000248 = 0x40; *(uint32_t*)0x20000000024c = 2; *(uint32_t*)0x200000000250 = 0x3d; *(uint32_t*)0x200000000258 = -1; memset((void*)0x20000000025c, 0, 12); syz_ublk_setup_io_uring(/*entries=*/0x6dd9, /*params=*/0x200000000240, /*ring_params_ptr=*/0, /*ring_ptr=*/0, /*sqes_ptr=*/0); break; } } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }