// https://syzkaller.appspot.com/bug?id=047b4e27025bc84b6c12aaea1d4158b0f111c3ac // 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 __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 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 long syz_mount_image(volatile long fsarg, volatile long dir, volatile long flags, volatile long optsarg, volatile long change_dir, volatile unsigned long size, volatile long image) { unsigned char* data = (unsigned char*)image; int res = -1, err = 0, loopfd = -1, need_loop_device = !!size; char* mount_opts = (char*)optsarg; char* target = (char*)dir; char* fs = (char*)fsarg; char* source = NULL; char loopname[64]; if (need_loop_device) { memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; source = loopname; } mkdir(target, 0777); char opts[256]; memset(opts, 0, sizeof(opts)); if (strlen(mount_opts) > (sizeof(opts) - 32)) { } strncpy(opts, mount_opts, sizeof(opts) - 32); if (strcmp(fs, "iso9660") == 0) { flags |= MS_RDONLY; } else if (strncmp(fs, "ext", 3) == 0) { bool has_remount_ro = false; char* remount_ro_start = strstr(opts, "errors=remount-ro"); if (remount_ro_start != NULL) { char after = *(remount_ro_start + strlen("errors=remount-ro")); char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1); has_remount_ro = ((before == '\0' || before == ',') && (after == '\0' || after == ',')); } if (strstr(opts, "errors=panic") || !has_remount_ro) strcat(opts, ",errors=continue"); } else if (strcmp(fs, "xfs") == 0) { strcat(opts, ",nouuid"); } res = mount(source, target, fs, flags, opts); if (res == -1) { err = errno; goto error_clear_loop; } res = open(target, O_RDONLY | O_DIRECTORY); if (res == -1) { err = errno; goto error_clear_loop; } if (change_dir) { res = chdir(target); if (res == -1) { err = errno; } } error_clear_loop: if (need_loop_device) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } errno = err; return res; } static void kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); for (int i = 0; i < 100; i++) { if (waitpid(-1, status, WNOHANG | __WALL) == pid) return; usleep(1000); } DIR* dir = opendir("/sys/fs/fuse/connections"); if (dir) { for (;;) { struct dirent* ent = readdir(dir); if (!ent) break; if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) continue; char abort[300]; snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", ent->d_name); int fd = open(abort, O_WRONLY); if (fd == -1) { continue; } if (write(fd, abort, 1) < 0) { } close(fd); } closedir(dir); } else { } while (waitpid(-1, status, __WALL) != pid) { } } static void reset_loop() { char buf[64]; snprintf(buf, sizeof(buf), "/dev/loop%llu", procid); int loopfd = open(buf, O_RDWR); if (loopfd != -1) { ioctl(loopfd, LOOP_CLR_FD, 0); close(loopfd); } } static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); write_file("/proc/self/oom_score_adj", "1000"); } static void setup_sysctl() { char mypid[32]; snprintf(mypid, sizeof(mypid), "%d", getpid()); 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", mypid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) printf("write to %s failed: %s\n", files[i].name, strerror(errno)); } } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { int i, call, thread; for (call = 0; call < 6; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); if (call == 0) break; 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++) { reset_loop(); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { setup_test(); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: NONFAILING(memcpy((void*)0x20000040, "ext4\000", 5)); NONFAILING(memcpy((void*)0x20000080, "./file1\000", 8)); NONFAILING(memcpy( (void*)0x20000740, "\x78\x9c\xec\xdd\xdf\x6b\x1c\x5b\x1d\x00\xf0\xef\x4c\xb2\x35\x69\x53" "\x93\xaa\x0f\xb5\x60\x5b\x6c\x25\x2d\xda\x4d\xd2\xd8\x36\xf8\x50\x2b" "\x88\x7d\x2a\xa8\xf5\xbd\xc6\x64\x13\x42\x36\xd9\x90\xdd\xb4\x4d\x28" "\x92\xe2\x1f\x20\x88\xa8\xe0\x53\x9f\x7c\xf1\x3f\x10\xa4\x0f\xfe\x01" "\x22\x08\xfa\x2e\xfe\x44\xb4\xbd\xf7\xe1\x3e\xdc\x7b\xf7\xb2\xbb\xb3" "\xbd\x69\xba\x9b\x0d\xf7\x6e\x32\x25\xf9\x7c\x60\x3a\xe7\x9c\x99\xcd" "\xf7\x7b\xb6\xec\xec\xcc\x9c\xc3\x4e\x00\xc7\xd6\xc5\x88\xb8\x13\x11" "\x03\x11\x71\x35\x22\x46\xb3\xf6\x34\x5b\xee\x36\x2a\xdb\xad\xfd\x5e" "\xbe\x78\x32\xd7\x58\x92\xa8\xd7\xef\xff\x2f\x89\x24\x6b\x6b\xff\xad" "\x24\x5b\x9f\x6a\xbd\x24\x86\x22\xe2\xfb\x77\x23\x7e\x94\xbc\x19\xb7" "\xba\xb9\xb5\x3c\x5b\x2e\x97\xd6\xb3\xfa\x44\x6d\x65\x6d\xa2\xba\xb9" "\x75\x6d\x69\x65\x76\xb1\xb4\x58\x5a\x9d\x9e\x9e\xba\x39\x73\x6b\xe6" "\xc6\xcc\x64\x5f\xfa\x39\x16\x11\xb7\xbf\xfd\xcf\x5f\xfc\xf4\x37\xdf" "\xb9\xfd\xfb\xaf\x3d\xfa\xdb\x83\xff\x5c\xf9\x71\x23\xad\x91\x6c\xfb" "\xce\x7e\xf4\x53\xab\xeb\x85\xe6\x7b\xd1\x36\x18\x11\xeb\x07\x11\x2c" "\x07\x03\xd9\xba\xd0\x73\xcf\x3f\x1c\x78\x2e\x00\x00\xf4\xd6\x38\xc7" "\xff\x5c\x44\x7c\xb9\x79\xfe\x3f\x1a\x03\xcd\xb3\x53\x00\x00\x00\xe0" "\x28\xa9\x7f\x73\x24\xde\x4f\x22\xea\x00\x00\x00\xc0\x91\x95\x36\xe7" "\xc0\x26\x69\x31\x9b\x0b\x30\x12\x69\x5a\x2c\xb6\xe6\xf0\x7e\x21\x4e" "\xa6\xe5\x4a\xb5\xf6\xd5\x85\xca\xc6\xea\x7c\x6b\xae\xec\x58\x14\xd2" "\x85\xa5\x72\x69\x32\x9b\x2b\x3c\x16\x85\xa4\x51\x9f\xca\xe6\xd8\xb6" "\xeb\xd7\x77\xd5\xa7\x23\xe2\x4c\x44\xfc\x7c\x74\xb8\x59\x2f\xce\x55" "\xca\xf3\x79\xdf\xfc\x00\x00\x00\x80\x63\xe2\xd4\xae\xeb\xff\x77\x47" "\x5b\xd7\xff\x00\x00\x00\xc0\x11\x33\x96\x77\x02\x00\x00\x00\xc0\x81" "\x7b\xed\xfa\xff\x59\x7e\x79\x00\x00\x00\x00\x07\xc7\xf8\x3f\x00\x00" "\x00\x1c\x69\xdf\xbd\x77\xaf\xb1\xd4\xdb\xcf\xbf\x9e\x7f\xb8\xb9\xb1" "\x5c\x79\x78\x6d\xbe\x54\x5d\x2e\xae\x6c\xcc\x15\xe7\x2a\xeb\x6b\xc5" "\xc5\x4a\x65\xb1\xf9\x9b\x7d\x2b\xbd\xfe\x5e\xb9\x52\x59\xfb\x7a\xac" "\x6e\x3c\x9e\xa8\x95\xaa\xb5\x89\xea\xe6\xd6\x83\x95\xca\xc6\x6a\xed" "\xc1\xd2\x6b\x8f\xc0\x06\x00\x00\x00\x0e\xd1\x99\x0b\xcf\xff\x9a\x44" "\xc4\xf6\x37\x86\x9b\x4b\xc3\x89\xbc\x93\x02\x0e\x45\xd2\x6b\x87\x9d" "\x77\xed\xfe\x71\xb0\xb9\x00\x87\x6b\x20\xef\x04\x80\xdc\x0c\xe6\x9d" "\x00\x90\x9b\x42\xde\x09\x00\xb9\xeb\x75\x1f\xa0\xeb\xe4\x9d\x3f\xf6" "\x3f\x17\x00\x00\xe0\x60\x8c\x7f\xf1\xd5\xf8\xff\x70\xbb\xad\x3d\xfe" "\xdf\xfb\xde\x40\xcf\xd1\x43\xe0\x2d\x96\xe6\x9d\x00\x00\x70\xe8\x8c" "\xff\xc3\xf1\x55\x30\x03\x10\x8e\xbd\xcf\xee\x6e\x48\x22\xb6\x77\x54" "\x3f\xfd\xf8\x7f\xbd\xfe\x49\xf2\x02\x00\x00\xfa\x67\xa4\xb9\x24\x69" "\x31\x1b\x0b\x1c\x89\x34\x2d\x16\x23\x4e\x37\x1f\x0b\x50\x48\x16\x96" "\xca\xa5\xc9\xec\xfa\xe0\x2f\xa3\x85\xcf\x34\xea\x53\xcd\x57\x26\x46" "\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x60\x9f\xea\xf5\x24\xea\x00\x00\x00\xc0\x91\x16\x91\xfe" "\x3b\xc9\x9e\xe4\x3f\x3e\x7a\x79\x64\xf7\xfd\x81\x13\xc9\x7b\xa3\xcd" "\x75\x44\x3c\xfa\xf5\xfd\x5f\x3e\x9e\xad\xd5\xd6\xa7\x1a\xed\xff\x7f" "\xd5\x5e\xfb\x55\xd6\x7e\xdd\xf3\xc4\x01\x00\x00\xe0\x6d\xd0\xbe\x4e" "\x6f\x5f\xc7\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x40\x3f\xbd\x7c\xf1\x64\xae\xbd\xbc\xb1" "\xf1\xc4\xc1\xc5\xfd\xef\xb7\x22\x62\xac\x53\xfc\xc1\x18\x6a\xae\x87" "\xa2\x10\x11\x27\xdf\x49\x62\x70\xc7\xeb\x92\x88\x18\xe8\x43\xfc\xed" "\xa7\x11\x71\xb6\x53\xfc\xa4\x91\x56\x8c\x65\x59\x74\x8a\x3f\x9c\x63" "\xfc\x34\x22\x4e\xf5\x21\x3e\x1c\x67\xcf\x1b\xc7\x9f\x3b\x9d\x3e\x7f" "\x69\x5c\x6c\xae\x3b\x7f\xfe\x1a\xe5\x7f\xf5\x21\x7e\xf7\xe3\x5f\xfa" "\xea\xf8\x37\xd0\xe5\xf8\x73\x7a\x9f\x31\xce\x6d\xef\x11\xff\x69\xc4" "\xb9\xc1\xce\xc7\x9f\x76\xfc\xa4\x4b\xfc\x4b\xfb\x8c\xff\xc3\x1f\x6c" "\x6d\x75\xdb\x56\x7f\x16\x31\xde\xf1\xfb\x27\x79\x2d\xd6\x44\x6d\x65" "\x6d\xa2\xba\xb9\x75\x6d\x69\x65\x76\xb1\xb4\x58\x5a\x9d\x9e\x9e\xba" "\x39\x73\x6b\xe6\xc6\xcc\xe4\xc4\xc2\x52\xb9\x94\xfd\xdb\x31\xc6\xcf" "\xbe\xf4\xbb\x0f\xf7\xea\xff\xc9\x2e\xf1\xc7\x5a\xfd\xbf\xd0\xad\xff" "\x97\xf7\xd9\xff\x0f\xfe\xfc\xf8\xc5\xe7\x5b\xc5\x42\xa7\xf8\x57\x2e" "\x75\xfe\xfe\x3d\xdb\x8a\xff\xc6\xfb\x9f\x66\xdf\x7d\x5f\xc9\xca\x8d" "\xed\xe3\xed\xf2\x76\xab\xbc\xd3\xf9\xdf\xfe\xe9\xfc\x5e\xfd\x9f\xef" "\xd2\xff\x5e\xff\xff\x57\xf6\xd9\xff\xab\xdf\xfb\xc9\xdf\xf7\xb9\x2b" "\x00\x70\x08\xaa\x9b\x5b\xcb\xb3\xe5\x72\x69\x5d\xa1\x73\xa1\x5e\xf7" "\x46\x29\x1c\xc9\x42\x0c\xed\xb5\x4f\xde\x47\x26\x00\x00\xa0\xdf\x3e" "\x3e\xe9\xcf\x3b\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x38\xbe\x0e\xe3\x97\xc6\x76\xc7\xdc\xe3\xe7\xa8\x01\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x72\xf3\x51\x00\x00\x00\xff\xff\x2b" "\xe2\xd3\xc7", 1244)); NONFAILING(syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x20000080, /*flags=*/0x4500, /*opts=*/0x200000c0, /*chdir=*/0xe, /*size=*/0x4dc, /*img=*/0x20000740)); break; case 1: NONFAILING(memcpy((void*)0x20000080, "./bus\000", 6)); syscall(__NR_open, /*file=*/0x20000080ul, /*flags=*/0x1e1142ul, /*mode=*/0ul); break; case 2: NONFAILING(memcpy((void*)0x20001280, "/dev/loop", 9)); NONFAILING(*(uint8_t*)0x20001289 = 0x30); NONFAILING(*(uint8_t*)0x2000128a = 0); NONFAILING(memcpy((void*)0x20001240, "./bus\000", 6)); syscall(__NR_mount, /*src=*/0x20001280ul, /*dst=*/0x20001240ul, /*type=*/0ul, /*flags=*/0x1000ul, /*data=*/0ul); break; case 3: NONFAILING(memcpy((void*)0x20000400, "./bus\000", 6)); res = syscall(__NR_open, /*file=*/0x20000400ul, /*flags=*/0x14103eul, /*mode=*/0ul); if (res != -1) r[0] = res; break; case 4: NONFAILING(memcpy((void*)0x20000100, "1000000\000", 8)); syscall(__NR_write, /*fd=*/r[0], /*val=*/0x20000100ul, /*len=*/8ul); break; case 5: NONFAILING(memcpy( (void*)0x20000c40, "\x23\x21\x20\x2e\x2f\x66\x69\x6c\x65\x31\x0a\x82\x6a\x3f\xc6\x7c\x3a" "\xab\x7d\x7e\x31\x38\xd5\xcc\x25\x19\xa6\xa8\xf7\xa0\x0b\xff\x3b\xee" "\x49\xbb\x93\x22\x1f\x4e\x80\x95\x34\x94\x23\x35\x8b\x24\xc3\x46\x99" "\x05\xf2\x81\x89\x7d\xc6\xe1\x7a\x55\x07\xba\x1b\x9e\x33\xcc\x8e\x4f" "\x28\xf6\xda\xe3\x4d\x29\x86\xca\x00\x9c\x79\xab\x46\x1e\x69\xfd\x74" "\xcc\xe8\xc9\xed\x5b\x91\x09\xf3\xfa\x42\xf4\x3d\x39\x82\xeb\x88\x19" "\x60\x25\x7e\x2c\xd3\xd2\x82\x1c\xc7\xf5\x80\xf2\x74\x9a\x70\x11\xd4" "\x8d\xa6\x46\xa5\xc0\xf2\xc0\x65\xde\x39\x6a\x55\xb1\xc0\x7d\xb5\x4c" "\x9d\xf5\x9d\x0a\x0d\xb7\x18\xa0\x86\xb4\x64\x51\x13\x19\x69\x16\x69" "\x1b\x0b\x09\x28\xa7\x00\xff\x9b\x12\xfd\x85\x58\x46\x1f\x93\x09\x96" "\x1d\xbb\x6a\x69\x13\x14\x89\x8c\xfd\xb1\xfc\xc5\x1b\x91\x2d\x77\x22" "\x8c\x1e\xa4\x43\x4e\x69\x24\x2c\xdd\x53\x59\x03\xa7\xcd\x7a\x57\xd4" "\xca\x13\x89\x2c\x04\x05\xb1\xb9\x50\x72\x3d\x18\xd4\x3e\x76\x09\x93" "\x99\x8a\xfe\x53\x22\x7a\xc0\xe0\xe8\x6d\x24\x4c\xc5\x51\x92\xce\x11" "\x50\x12\xfe\x3f\x36\xef\x52\x9b\x66\xdc\xf4\x62\x54\x4a\xba\xc1\xb2" "\x5e\x66\x9d\x6f\x85\x48\xd3\xef\x5e\xd9\xb2\xa3\x3c\xc6\x67\xd1\x03" "\x40\x14\x55\xb9\x64\x2b\xb6\xe6\xec\xe1\x37\xcf\x22\xe2\x1c\x49\x43" "\xa3\x91\x9c\xe3\x29\xb6\x49\x28\x5b\x74\x6b\xf0\x74\x06\x04\xd7\xe4" "\x65\xee\x76\x09\x59\x7a\xc3\x60\xb0\x80\xfa\x16\xb3\x5f\x08\x46\x6e" "\xec\xbf\xa3\x5d\x0c\x37\x1b\x0d\x3f\x23\x74\xda\xd8\xfd\x4a\xb7\x77" "\x5d\x14\x62\x70\xfb\x31\x4d\xd1\xd4\xde\x55\xda\x46\x88\x41\x33\x28" "\xe9\xf2\x13\x12\xcf\x32\x1b\x55\x62\xa7\x55\xe3\x30\x8b\x5b\xc6\x19" "\xbd\xf1\x39\xb8\x9e\xf7\xa0\xb8\x2b\x44\x36\xf6\xe7\x5f\xc2\x2b\x61" "\x92\x1a\xde\xf4\x12\xcb\x27\xcd\xeb\x68\x3f\x70\xc1\xc6\x10\x21\x7f" "\xbe\x12\x77\xdd\x0b\xa0\x25\xcd\x5a\x0d\x5d\x9b\xca\xeb\xd6\xbd\x3f" "\xe1\x6d\x72\xe8\xc7\x78\xc4\xb6\x12\xb0\x0c\xbf\xec\x94\x71\x0f\x05" "\x20\xf3\xe3\x04\xd4\x4c\x51\xbe\x5e\x33\xc2\x63\x30\x72\x91\xd4\x51" "\x34\x84\x74\x0f\x38\x98\x95\x6c\x48\x44\xb6\x05\xda\xeb\x8d\xbc\xb5" "\x1e\xdb\x30\xd5\xb9\x13\x8a\x8c\x79\xb3\xa8\xe7\x80\x97\xa0\x73\x77" "\x3a\x6f\xfb\xe3\x51\x1d\x2d\xea\xf0\x52\xf8\x58\x89\x17\x64\x11\xbc" "\xeb\xf3\xa5\x66\x94\x17\x6e\x4f\x22\x8b\x53\x7e\x27\x1e\x45\x12\xb5" "\xbc\xe9\xf2\x29\x27\xd0\xac\x27\x68\xdb\x31\xc5\x9d\xf2\xce\x48\xc7" "\x07\x7d\xcf\xc5\xc5\x5f\xe8\xa1\x56\x63\xe4\xcd\x26\x5a\xea\x7a\x3f" "\x4f\x4e\x93\x43\xd8\x6e\x86\xbd\xb6\xa9\x00\x31\xfe\xbc\xad\x5b\x8d" "\xfd\x62\x81\x46\x41\x64\x67\x1d\x99\xb1\x88\x03\x52\x97\x5e\xb5\xd2" "\x1c\xcf\x68\xb5\x7c\xeb\x83\x2b\x2d\x94\x00\x9b\x44\x6f\xe1\x93\x44" "\x66\x25\xf7\x95\x68\x95\xb4\xb8\x11\x9a\x5a\x8f\x86\xc3\x06\x72\x6b" "\xfe\xb5\x18\x2c\xb8\x77\x29\xbb\x61\x62\xe2\x43\x2d\xec\x1f\x7e\xe6" "\x67\x3d\x86\x6d\x4c\xc1\x2c\x2b\xdd\xee\x8a\xcf\xfc\xd9\xe0\x4b\xa8" "\x28\x73\x95\x33\xfb\xcc\xe7\xc5\x01\xb8\xf6\x8e\x98\xb7\xa1\xf3\x6e" "\xa8\x44\xdc\x77\x79\x84\x4c\x6c\xec\xc3\x0b\xd1\x68\xb2\xb4\xc3\x19" "\xd1\xeb\x61\x6d\x2b\xbc\xb5\xfd\x39\xfe\x38\x25\x1f\x11\x12\x9e\xe3" "\xd8\xa3\x0f\xaa\xf9\x55\x3e\xc6\x59\xcf\x45\x96\xf0\xd6\xb8\x36\x46" "\x66\xa0\x71\xc4\x02\x95\x43\xf4\xea\x52\x48\xa2\xed\x46\x2c\xc6\xfa" "\x02\xa3\xd0\x89\x98\xc9\x6d\x36\x7c\xb7\x89\x1e\x64\x9e\xa5\xe2\xc9" "\x12\x03\x8c\xa0\xc8\x1b\x77\x3a\x0a\x0d\xe0\xd7\x75\x73\x0a\x84\x5b" "\x8e\x76\x45\x81\xce\x25\xd1\x74\x7f\xa2\x18\x91\xdd\x8a\xe0\x4f\x03" "\x75\x0a\x45\xc3\x88\x61\x1f\xe0\x16\xd0\x7c\x81\xd3\x54\xf5\xe3\x33" "\x06\x8f\xb0\x7c\xfb\x4d\xcc\xb9\x37\x1f\x38\x03\x77\xbc\xdf\xcc\x6c" "\x77\x66\xb1\x58\x3d\x9d\xba\x0f\x2f\x7b\xb1\xfd\xbb\x4c\x0f\x48\x77" "\x11\x81\x11\xbb\xed\x91\x7c\x50\xfd\xe8\x23\x36\xc7\xbb\x68\x54\x72" "\x3b\x61\xb9\x34\xce\x3b\x1a\xef\xbf\xc6\x8e\x2f\x8f\xc0\xf1\x94\x66" "\x03\xdc\x58\xc5\x9a\xf7\x6f\x1d\x0b\xe4\x77\x9f\x64\xd7\x9a\x2d\xe4" "\x9e\x33\x18\x60\xea\x9c\x22\x47\xdd\x74\xa1\x24\x67\x9e\xc2\x66\x39" "\xc6\xa8\x1c\x62\x29\xd7\x61\x2b\x9d\x36\xee\x47\xd8\xe0\x8a\xe6\x35" "\xf9\xbc\xbb\x7d\x3e\x58\xdf\x44\x81\xd4\x57\x6f\xa6\xbf\xc2\x4b\x70" "\x6e\xec\xad\x1a\x12\xef\xa0\xf6\x15\xb0\x56\xce\x5f\x92\xf4\x2e\xf6" "\x33\xba\x5a\xc6\xc6\x92\x4c\xec\x40\xc4\x14\x80\xa0\xe6\x89\x94\xc5" "\x51\xe2\x10\x4a\xcb\x3c\xdb\x78\x5b\x3a\xef\x30\x4c\x25\x25\x1b\xfa" "\xa6\x28\x0b\xb5\xac\x48\x60\x6b\xc2\xd6\xbb\x87\x12\xae\x0d\x3c\xe7" "\x79\xc0\xb5\x47\x66\xa3\x6a\x93\x04\xd7\xc4\xe7\xb9\x2e\x89\x7b\xa0" "\x09\xf4\x70\xff\x88\x90\x93\x3b\xf0\x1c\xbd\xed\x96\x61\x22\xfa\x06" "\xb3\xf6\x2a\xa3\x27\x46\xf6\xcd\x8d\xc2\x6b\x2d\xaf\x8e\x67\x4b\x9f" "\x3f\xb1\xe6\x31\x66\x84\xc4\x40\xad\xc5\x29\x78\x8c\xa2\x4a\x03\xbb" "\x6d\x61\x2a\x22\xa3\xb8\x8b\x6b\xc9\xa6\x7f\xd0\x4d\x6a\x74\xd3\x62" "\xea\xbc\x58\xdd\x58\xc4\xb1\xea\xbc\xdb\xa5\x71\x4c\x40\x2d\x01\x48" "\x75\x9b\x8e\x1d\x59\x3c\x4f\x3a\x9a\x88\x40\xe1\x6f\xbb\x28\x25\x26" "\xad\x4d\x6c\x88\x0e\xa6\x01\xd5\x59\xef\xfe\x5c\x47\x77\x54\xac\x61" "\x1c\x87\x49\xf9\xff\x7f\x56\xcd\xf7\x92\xd4\x51\x40\x20\x45\x97\xe4" "\xff\x08\x03\x3a\x08\x13\x70\xe2\xe0\x15\x03\xbc\x48\xd6\x52\xaa\xf2" "\x76\xe3\xae\xbd\xc1\x11\x69\x8c", 1198)); syscall(__NR_write, /*fd=*/r[0], /*data=*/0x20000c40ul, /*len=*/0x415ul); break; } } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul); setup_sysctl(); install_segv_handler(); loop(); return 0; }