// https://syzkaller.appspot.com/bug?id=8de83ef3d439c5485118d2b2b68b2cb6bbacdae2 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef __NR_bpf #define __NR_bpf 321 #endif #ifndef __NR_close_range #define __NR_close_range 436 #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); } #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) 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; } static long syz_open_dev(volatile long a0, volatile long a1, volatile long a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { unsigned long nb = a1; char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf) - 1); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(nb % 10); nb /= 10; } return open(buf, a2, 0); } } //% 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")) { } } static void setup_sysctl() { int cad_pid = fork(); if (cad_pid < 0) exit(1); if (cad_pid == 0) { for (;;) sleep(100); } char tmppid[32]; snprintf(tmppid, sizeof(tmppid), "%d", cad_pid); struct { const char* name; const char* data; } files[] = { {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"}, {"/proc/sys/kernel/hung_task_check_interval_secs", "20"}, {"/proc/sys/net/core/bpf_jit_kallsyms", "1"}, {"/proc/sys/net/core/bpf_jit_harden", "0"}, {"/proc/sys/kernel/kptr_restrict", "0"}, {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"}, {"/proc/sys/fs/mount-max", "100"}, {"/proc/sys/vm/oom_dump_tasks", "0"}, {"/proc/sys/debug/exception-trace", "0"}, {"/proc/sys/kernel/printk", "7 4 1 3"}, {"/proc/sys/kernel/keys/gc_delay", "1"}, {"/proc/sys/vm/oom_kill_allocating_task", "1"}, {"/proc/sys/kernel/ctrl-alt-del", "0"}, {"/proc/sys/kernel/cad_pid", tmppid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) { } } kill(cad_pid, SIGKILL); while (waitpid(cad_pid, NULL, 0) != cad_pid) ; } 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 < 20; 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 == 2 ? 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[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: NONFAILING(*(uint32_t*)0x2000000000c0 = 0x1b); NONFAILING(*(uint32_t*)0x2000000000c4 = 0); NONFAILING(*(uint32_t*)0x2000000000c8 = 0); NONFAILING(*(uint32_t*)0x2000000000cc = 0x8000); NONFAILING(*(uint32_t*)0x2000000000d0 = 0); NONFAILING(*(uint32_t*)0x2000000000d4 = -1); NONFAILING(*(uint32_t*)0x2000000000d8 = 0); NONFAILING(memset((void*)0x2000000000dc, 0, 16)); NONFAILING(*(uint32_t*)0x2000000000ec = 0); NONFAILING(*(uint32_t*)0x2000000000f0 = -1); NONFAILING(*(uint32_t*)0x2000000000f4 = 0); NONFAILING(*(uint32_t*)0x2000000000f8 = 0); NONFAILING(*(uint32_t*)0x2000000000fc = 0); NONFAILING(*(uint64_t*)0x200000000100 = 0); NONFAILING(*(uint32_t*)0x200000000108 = 0); NONFAILING(*(uint32_t*)0x20000000010c = 0); res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000000c0ul, /*size=*/0x48ul); if (res != -1) r[0] = res; break; case 1: NONFAILING(*(uint32_t*)0x200000000640 = 0x11); NONFAILING(*(uint32_t*)0x200000000644 = 7); NONFAILING(*(uint64_t*)0x200000000648 = 0x200000000180); NONFAILING(*(uint8_t*)0x200000000180 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000181, 0, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000181, 0, 4, 4)); NONFAILING(*(uint16_t*)0x200000000182 = 0); NONFAILING(*(uint32_t*)0x200000000184 = 0xfffffff7); NONFAILING(*(uint8_t*)0x200000000188 = 0); NONFAILING(*(uint8_t*)0x200000000189 = 0); NONFAILING(*(uint16_t*)0x20000000018a = 0); NONFAILING(*(uint32_t*)0x20000000018c = 0); NONFAILING(*(uint8_t*)0x200000000190 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000191, 1, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000191, 1, 4, 4)); NONFAILING(*(uint16_t*)0x200000000192 = 0); NONFAILING(*(uint32_t*)0x200000000194 = r[0]); NONFAILING(*(uint8_t*)0x200000000198 = 0); NONFAILING(*(uint8_t*)0x200000000199 = 0); NONFAILING(*(uint16_t*)0x20000000019a = 0); NONFAILING(*(uint32_t*)0x20000000019c = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000001a0, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000001a0, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000001a0, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000001a1, 2, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x2000000001a1, 0, 4, 4)); NONFAILING(*(uint16_t*)0x2000000001a2 = 0); NONFAILING(*(uint32_t*)0x2000000001a4 = 0); NONFAILING(*(uint8_t*)0x2000000001a8 = 0x85); NONFAILING(*(uint8_t*)0x2000000001a9 = 0); NONFAILING(*(uint16_t*)0x2000000001aa = 0); NONFAILING(*(uint32_t*)0x2000000001ac = 0x86); NONFAILING(*(uint8_t*)0x2000000001b0 = 0x95); NONFAILING(*(uint8_t*)0x2000000001b1 = 0); NONFAILING(*(uint16_t*)0x2000000001b2 = 0); NONFAILING(*(uint32_t*)0x2000000001b4 = 0); NONFAILING(*(uint64_t*)0x200000000650 = 0x2000000000c0); NONFAILING(memcpy((void*)0x2000000000c0, "syzkaller\000", 10)); NONFAILING(*(uint32_t*)0x200000000658 = 0); NONFAILING(*(uint32_t*)0x20000000065c = 0); NONFAILING(*(uint64_t*)0x200000000660 = 0); NONFAILING(*(uint32_t*)0x200000000668 = 0x41000); NONFAILING(*(uint32_t*)0x20000000066c = 8); NONFAILING(memset((void*)0x200000000670, 0, 16)); NONFAILING(*(uint32_t*)0x200000000680 = 0); NONFAILING(*(uint32_t*)0x200000000684 = 0x2b); NONFAILING(*(uint32_t*)0x200000000688 = -1); NONFAILING(*(uint32_t*)0x20000000068c = 0); NONFAILING(*(uint64_t*)0x200000000690 = 0); NONFAILING(*(uint32_t*)0x200000000698 = 0); NONFAILING(*(uint32_t*)0x20000000069c = 0); NONFAILING(*(uint64_t*)0x2000000006a0 = 0); NONFAILING(*(uint32_t*)0x2000000006a8 = 0); NONFAILING(*(uint32_t*)0x2000000006ac = 0); NONFAILING(*(uint32_t*)0x2000000006b0 = 0); NONFAILING(*(uint32_t*)0x2000000006b4 = 0); NONFAILING(*(uint64_t*)0x2000000006b8 = 0); NONFAILING(*(uint64_t*)0x2000000006c0 = 0); NONFAILING(*(uint32_t*)0x2000000006c8 = 0); NONFAILING(*(uint32_t*)0x2000000006cc = 0); NONFAILING(*(uint32_t*)0x2000000006d0 = 0); syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000640ul, /*size=*/0x94ul); break; case 2: NONFAILING(memcpy((void*)0x200000000040, "ext2\000", 5)); NONFAILING( memcpy((void*)0x200000000140, "\351\037q\211Y\036\2223aK\000", 11)); NONFAILING(*(uint8_t*)0x200000000000 = 0); NONFAILING(memcpy( (void*)0x200000000900, "\x78\x9c\xec\xdd\x5d\x6b\x5c\x69\x1d\x00\xf0\xff\x99\xcc\xa4\x49\x1b" "\x4d\xd4\xbd\x58\x85\x5d\x8b\xbb\xd0\x2e\xda\xa4\xd9\xba\xbb\x41\x64" "\x5b\x41\xbc\x5b\x50\x56\xaf\x6b\x48\xa7\x21\x74\x92\x29\x99\xc9\x6e" "\x13\x16\x49\xf1\x03\x08\x22\xba\xe0\x8d\x5e\x79\x23\xf8\x01\x04\xe9" "\x47\x10\x61\xc1\xbd\x17\x57\x94\xa2\x5d\x05\xf7\x42\xf7\xc8\x79\x99" "\xa6\x9d\xce\xd9\xa4\x6d\x66\x46\x26\xbf\x1f\x3c\x73\x9e\xf3\xfa\xff" "\x3f\x33\x93\xf3\x3e\x39\x01\x9c\x58\x67\x23\xe2\x4a\x44\x4c\x45\xc4" "\x4b\x11\x31\x5f\x0e\xaf\x95\x25\xf6\x8b\x92\x4d\xf7\xe1\xbd\x77\xd6" "\xb2\x92\x44\x9a\xbe\xf9\xf7\x24\x92\x72\x58\x36\x59\x52\x96\xcc\x99" "\x72\xb6\x99\xa2\x33\x50\x67\x77\xef\xc6\x6a\xab\xd5\xdc\x2e\xfb\x97" "\xba\x9b\x37\x97\x3a\xbb\x7b\x17\x36\x36\x57\xd7\x9b\xeb\xcd\xad\x4b" "\x97\x96\x5f\x5d\x79\x6d\xe5\x95\x95\x8b\xc7\xd2\xce\xac\x5d\xaf\x7f" "\xf3\x2f\x3f\xfd\xd1\xaf\xbe\xf5\xfa\xef\xbe\xf2\xf6\x9f\xae\xfe\xed" "\xfc\x0f\xb2\x7c\xe7\xca\xf1\xbd\x76\x1c\xb7\xe2\x3d\x69\x64\xef\xc5" "\x7d\xf5\x88\xd8\x1e\x46\xb0\x31\x98\x2a\xdb\xd3\x88\xde\x0b\x00\x00" "\xff\xcf\xb2\x7d\xfc\xcf\x46\xc4\x97\xf2\xfd\xff\xf9\x98\xca\xf7\xe6" "\xaa\x4d\x3f\x50\x4f\x86\x9e\x1d\x00\x00\x00\x70\x1c\xd2\xcb\x73\xf1" "\x9f\x24\x22\x05\x00\x00\x00\x26\x56\x2d\xbf\x07\x36\xa9\x2d\x96\xf7" "\x02\xcc\x45\xad\xb6\xb8\x58\xdc\xc3\xfb\x4c\x9c\xae\xb5\xda\x9d\xee" "\x97\xaf\xb7\x77\xb6\xae\x15\xf7\xca\x2e\x44\xa3\x76\x7d\xa3\xd5\xbc" "\x58\xde\x53\xbb\x10\x8d\x24\xeb\x5f\xbe\x7f\x46\xa1\xe8\x7f\x39\x1f" "\x97\x95\xe4\xa1\x7b\x80\x7f\x32\x3f\x9b\x8f\x5f\x5c\x6b\xc7\xb5\x71" "\x9c\xf0\x00\x00\x00\x80\x13\xe8\x4c\xdf\xf1\xff\xbf\xe6\x8b\xe3\x7f" "\x00\x00\x00\x60\xc2\x2c\x8c\x3b\x01\x00\x00\x00\x60\xe8\x1c\xff\x03" "\x00\x00\xc0\xe4\x7b\x82\xe3\xff\xe9\x61\xe4\x01\x00\x00\x00\x0c\xc5" "\xb7\xdf\x78\x23\x2b\x69\xef\xf9\xd7\xd7\xde\xda\xdd\xb9\xd1\x7e\xeb" "\xc2\xb5\x66\xe7\xc6\xe2\xe6\xce\xda\xe2\x5a\x7b\xfb\xe6\xe2\x7a\xbb" "\xbd\xde\x4a\x4f\x45\x6c\x1e\xb6\xbc\x56\xbb\x7d\xf3\xab\xb1\xb5\x73" "\x6b\xa9\xdb\xec\x74\x97\x3a\xbb\x7b\x57\x37\xdb\x3b\x5b\xdd\xab\x1b" "\x0f\x3d\x02\x1b\x00\x00\x00\x18\xa1\xcf\x7c\xf1\xce\xfb\x49\x44\xec" "\x7f\x6d\x36\x2f\xd1\xbb\xb6\x3f\x55\x31\x83\xdf\x0a\xc0\xc4\xa8\x1d" "\x71\xba\x34\x7b\xf9\x60\xb8\xb9\x00\xa3\x55\xb5\x99\x07\x26\x5f\xfd" "\x93\x47\xbb\xcd\x17\x26\x58\xa3\xe8\x24\xe3\xce\x03\x18\x9f\xc3\x56" "\x00\x33\x55\x53\xfc\x7e\x18\xd9\x00\x00\x00\xc3\x70\xee\xf3\x77\xde" "\x4f\x93\x47\xaf\xff\xd7\x0f\xce\x0d\x00\x13\xea\xa8\xd7\xff\x81\xc9" "\x53\x71\xfd\x3f\x9d\x1f\x75\x22\xc0\xc8\x1d\x72\xfd\x1f\x98\x60\x0d" "\x77\x00\xc2\x89\x77\xf8\xf5\xff\x0a\xc5\xf5\xff\x2b\x87\x47\x48\xd3" "\x43\x97\x05\x00\x00\x0c\xd5\x5c\x5e\x92\xda\x62\x79\x2d\x70\x2e\x6a" "\x1f\xa5\x85\x58\x88\x46\x72\x7d\xa3\xd5\xbc\x18\x11\x9f\x8e\x88\x3f" "\xce\x37\x4e\x65\xfd\xcb\xf9\x9c\x89\x1f\x0d\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\x11\xa5\x69" "\x12\xe9\x13\xa8\x3f\xd1\x5c\x00\x00\x00\xc0\x38\x44\xd4\xfe\x9a\x94" "\xcf\xff\x3a\x37\xff\xe2\x5c\xff\xf9\x81\xe9\xe4\xa3\xfc\x51\xc0\x1f" "\xa7\x69\xfa\xf6\xcf\xdf\xfc\xd9\xad\xd5\x6e\x77\x7b\x39\x1b\xfe\x8f" "\x7c\xf8\x74\x44\x74\xdf\x2d\x87\xbf\x3c\x8e\x33\x18\x00\x00\x00\x40" "\x4f\xef\x29\xff\xc5\x71\x7a\x63\xcc\xd9\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x30\xa9\x3e" "\xbc\xf7\xce\x5a\xaf\x8c\x32\xee\xdd\x6f\x44\xc4\xc2\xa0\xf8\xf5\x98" "\xc9\xbb\x33\xd1\x88\x88\xd3\xff\x4c\xa2\xfe\xc0\x7c\x49\x44\x4c\x1d" "\x43\xfc\xfd\xdb\x11\xf1\xec\xa0\xf8\x49\x96\x56\x2c\x94\x59\xf4\xc7" "\xaf\x45\xc4\x6c\x9e\xc5\xd0\xe3\x3f\x97\xa6\xe9\xc0\xf8\x67\x9e\x3a" "\x3a\x9c\x6c\x77\xb2\xf5\xcf\x95\x41\x7f\x7f\xb5\x38\x9b\x77\x07\xff" "\xfd\xd7\x8b\x72\xf9\x69\xe3\x57\xaf\xff\x6a\xf7\xd7\x7f\x53\xfd\xf1" "\xeb\xc5\xfa\xef\x53\x47\x8c\xf1\x85\xf7\x7e\xb3\xf4\x40\xef\xf7\x0e" "\xaa\xa7\x8a\xf1\xf5\xc1\xeb\x9f\x5e\xfc\xa4\x62\xfd\xfb\xc2\xa0\x60" "\xf5\x47\x07\x7d\xff\xbb\x7b\x7b\x55\xb9\xa5\xbf\x8c\x38\x37\x70\xfb" "\x93\x3c\x14\x6b\xa9\xbb\x79\x73\xa9\xb3\xbb\x77\x61\x63\x73\x75\xbd" "\xb9\xde\xdc\xba\x74\x69\xf9\xd5\x95\xd7\x56\x5e\x59\xb9\xb8\x74\x7d" "\xa3\xd5\x2c\x5f\x07\xc6\xf8\xf1\x73\xbf\xfd\xb8\x2a\xfe\xdd\xb3\x11" "\xa7\xcb\xf8\xd3\xbd\x9c\xca\x0d\xcb\x42\xd1\xf9\x7a\xd9\xfe\xd5\xfe" "\xf6\xbf\x98\x55\x1a\x55\x4b\x3e\xf0\xdf\xf7\x6e\xdd\xfb\x5c\x51\x6d" "\xf4\x2d\x22\xee\xde\x8e\x38\xff\xc2\xe0\xcf\xff\xd9\xbc\x3b\xf0\xfd" "\xff\xc5\xbf\xd3\x5c\xbe\x1d\xc8\xc6\x9f\x2b\xb7\x09\xc9\x7e\x51\x8f" "\x28\xbf\xbe\x11\xf1\xfc\xaf\xff\xf0\x7c\x65\xfb\x6f\xcf\x94\xb5\xc7" "\xff\xfc\xcf\x1f\xde\xf4\xdc\x4b\xdf\xf9\xe1\x9f\x8f\x38\x29\x00\x30" "\x02\x9d\xdd\xbd\x1b\xab\xad\x56\x73\x7b\xe8\x95\x77\xd3\x34\x3d\xda" "\xc4\xd9\x5e\x69\xc5\xa8\xa9\x47\xe7\x4a\x22\xf6\xfb\x27\xce\x76\xe0" "\x8e\xb9\x15\xb3\x11\x51\x31\x6a\x70\xac\x38\xea\x92\x9f\xa9\x4c\xf5" "\x83\xd9\x88\xe3\x6d\x45\xad\xfc\xd8\x9f\x7a\x81\x97\x1f\x67\xe2\xf4" "\xd4\x63\x7d\xd9\x92\xfd\x91\x7c\x21\x55\x2a\x2a\xd3\xf9\x17\x72\x9c" "\x6b\x25\x00\x00\x60\x18\x0e\xf6\xfe\xc7\x9d\x09\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9c\x5c\xa3\xf8\xbf\x62\xfd" "\x31\xf7\xc7\xd3\x54\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x4f\xf4" "\xbf\x00\x00\x00\xff\xff\xf0\xa9\xd1\x2d", 1370)); NONFAILING(syz_mount_image(/*fs=*/0x200000000040, /*dir=*/0x200000000140, /*flags=MS_RDONLY|MS_NOSUID*/ 3, /*opts=*/0x200000000000, /*chdir=*/0xbc, /*size=*/0x55a, /*img=*/0x200000000900)); break; case 3: res = syscall(__NR_epoll_create1, /*flags=*/0ul); if (res != -1) r[1] = res; break; case 4: NONFAILING(memcpy((void*)0x200000000000, "/dev/uinput\000", 12)); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000000ul, /*flags=O_RDWR*/ 2, /*mode=*/0); if (res != -1) r[2] = res; break; case 5: NONFAILING(*(uint16_t*)0x200000000280 = 0); NONFAILING(*(uint16_t*)0x200000000282 = 8); NONFAILING(*(uint16_t*)0x200000000284 = 6); NONFAILING(*(uint16_t*)0x200000000286 = 0x1e); NONFAILING(memcpy( (void*)0x200000000288, "syz1\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\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)); NONFAILING(*(uint32_t*)0x2000000002d8 = 0x4c); syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x405c5503, /*arg=*/0x200000000280ul); break; case 6: syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x4004556b, /*arg=*/0x51ul); break; case 7: syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x5501, 0); break; case 8: NONFAILING(memcpy((void*)0x200000000340, "/dev/input/event#\000", 18)); res = -1; NONFAILING( res = syz_open_dev(/*dev=*/0x200000000340, /*id=*/0x3f, /*flags=*/0)); if (res != -1) r[3] = res; break; case 9: NONFAILING(*(uint16_t*)0x200000000180 = 0x50); NONFAILING(*(uint16_t*)0x200000000182 = -1); NONFAILING(*(uint16_t*)0x200000000184 = 0); NONFAILING(*(uint16_t*)0x200000000186 = 5); NONFAILING(*(uint16_t*)0x200000000188 = 0); NONFAILING(*(uint16_t*)0x20000000018a = 0); NONFAILING(*(uint16_t*)0x20000000018c = 0); NONFAILING(*(uint16_t*)0x200000000190 = 0); NONFAILING(*(uint16_t*)0x200000000192 = 0); NONFAILING(*(uint16_t*)0x200000000194 = 0); NONFAILING(*(uint16_t*)0x200000000196 = 0); NONFAILING(*(uint16_t*)0x200000000198 = 0); NONFAILING(*(uint16_t*)0x20000000019a = 9); NONFAILING(*(uint16_t*)0x20000000019c = 0); NONFAILING(*(uint16_t*)0x20000000019e = 0); NONFAILING(*(uint16_t*)0x2000000001a0 = 0); NONFAILING(*(uint16_t*)0x2000000001a2 = 0); NONFAILING(*(uint16_t*)0x2000000001a4 = 0); NONFAILING(*(uint16_t*)0x2000000001a6 = 0); syscall(__NR_ioctl, /*fd=*/r[3], /*cmd=*/0x40304580, /*arg=*/0x200000000180ul); break; case 10: syscall(__NR_close_range, /*fd=*/r[1], /*max_fd=*/(intptr_t)-1, /*flags=*/0ul); break; case 11: NONFAILING(*(uint64_t*)0x200000000140 = 0xa); NONFAILING(*(uint64_t*)0x200000000148 = 0x8b); syscall(__NR_prlimit64, /*pid=*/0, /*res=RLIMIT_RTPRIO*/ 0xeul, /*new=*/0x200000000140ul, /*old=*/0ul); break; case 12: NONFAILING(*(uint32_t*)0x200000000080 = 8); syscall(__NR_sched_setscheduler, /*pid=*/0, /*policy=SCHED_RR*/ 2ul, /*prio=*/0x200000000080ul); break; case 13: res = syscall(__NR_getpid); if (res != -1) r[4] = res; break; case 14: NONFAILING(*(uint64_t*)0x2000000002c0 = 2); syscall(__NR_sched_setaffinity, /*pid=*/0, /*cpusetsize=*/8ul, /*mask=*/0x2000000002c0ul); break; case 15: NONFAILING(*(uint32_t*)0x200000000200 = 7); syscall(__NR_sched_setscheduler, /*pid=*/r[4], /*policy=SCHED_RR*/ 2ul, /*prio=*/0x200000000200ul); break; case 16: syscall( __NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0xb36000ul, /*prot=PROT_GROWSUP|PROT_SEM|PROT_WRITE|PROT_EXEC|0xb635773f04ebbee0*/ 0xb635773f06ebbeeeul, /*flags=MAP_POPULATE|MAP_FIXED|MAP_ANONYMOUS|MAP_SHARED*/ 0x8031ul, /*fd=*/(intptr_t)-1, /*offset=*/0xf0667000ul); break; case 17: syscall(__NR_socketpair, /*domain=*/1ul, /*type=SOCK_DGRAM*/ 2ul, /*proto=*/0, /*fds=*/0ul); break; case 18: syscall(__NR_connect, /*fd=*/(intptr_t)-1, /*addr=*/0ul, /*addrlen=*/0ul); break; case 19: syscall(__NR_recvmmsg, /*fd=*/(intptr_t)-1, /*mmsg=*/0ul, /*vlen=*/0ul, /*f=MSG_PEEK*/ 2ul, /*timeout=*/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); setup_sysctl(); const char* reason; (void)reason; install_segv_handler(); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }