// https://syzkaller.appspot.com/bug?id=987533394eda5f97c1e30b2a5346b6c3b452d5ac // 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 thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { int state; } event_t; static void event_init(event_t* ev) { ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { if (ev->state) exit(1); __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); } static void event_wait(event_t* ev) { while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); } static int event_isset(event_t* ev) { return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; for (;;) { uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) return 1; now = current_time_ms(); if (now - start > timeout) return 0; } } static bool write_file(const char* file, const char* what, ...) { char buf[1024]; va_list args; va_start(args, what); vsnprintf(buf, sizeof(buf), what, args); va_end(args); buf[sizeof(buf) - 1] = 0; int len = strlen(buf); int fd = open(file, O_WRONLY | O_CLOEXEC); if (fd == -1) return false; if (write(fd, buf, len) != len) { int err = errno; close(fd); errno = err; return false; } close(fd); return true; } //% This code is derived from puff.{c,h}, found in the zlib development. The //% original files come with the following copyright notice: //% Copyright (C) 2002-2013 Mark Adler, all rights reserved //% version 2.3, 21 Jan 2013 //% This software is provided 'as-is', without any express or implied //% warranty. In no event will the author be held liable for any damages //% arising from the use of this software. //% Permission is granted to anyone to use this software for any purpose, //% including commercial applications, and to alter it and redistribute it //% freely, subject to the following restrictions: //% 1. The origin of this software must not be misrepresented; you must not //% claim that you wrote the original software. If you use this software //% in a product, an acknowledgment in the product documentation would be //% appreciated but is not required. //% 2. Altered source versions must be plainly marked as such, and must not be //% misrepresented as being the original software. //% 3. This notice may not be removed or altered from any source distribution. //% Mark Adler madler@alumni.caltech.edu //% BEGIN CODE DERIVED FROM puff.{c,h} #define MAXBITS 15 #define MAXLCODES 286 #define MAXDCODES 30 #define MAXCODES (MAXLCODES + MAXDCODES) #define FIXLCODES 288 struct puff_state { unsigned char* out; unsigned long outlen; unsigned long outcnt; const unsigned char* in; unsigned long inlen; unsigned long incnt; int bitbuf; int bitcnt; jmp_buf env; }; static int puff_bits(struct puff_state* s, int need) { long val = s->bitbuf; while (s->bitcnt < need) { if (s->incnt == s->inlen) longjmp(s->env, 1); val |= (long)(s->in[s->incnt++]) << s->bitcnt; s->bitcnt += 8; } s->bitbuf = (int)(val >> need); s->bitcnt -= need; return (int)(val & ((1L << need) - 1)); } static int puff_stored(struct puff_state* s) { s->bitbuf = 0; s->bitcnt = 0; if (s->incnt + 4 > s->inlen) return 2; unsigned len = s->in[s->incnt++]; len |= s->in[s->incnt++] << 8; if (s->in[s->incnt++] != (~len & 0xff) || s->in[s->incnt++] != ((~len >> 8) & 0xff)) return -2; if (s->incnt + len > s->inlen) return 2; if (s->outcnt + len > s->outlen) return 1; for (; len--; s->outcnt++, s->incnt++) { if (s->in[s->incnt]) s->out[s->outcnt] = s->in[s->incnt]; } return 0; } struct puff_huffman { short* count; short* symbol; }; static int puff_decode(struct puff_state* s, const struct puff_huffman* h) { int first = 0; int index = 0; int bitbuf = s->bitbuf; int left = s->bitcnt; int code = first = index = 0; int len = 1; short* next = h->count + 1; while (1) { while (left--) { code |= bitbuf & 1; bitbuf >>= 1; int count = *next++; if (code - count < first) { s->bitbuf = bitbuf; s->bitcnt = (s->bitcnt - len) & 7; return h->symbol[index + (code - first)]; } index += count; first += count; first <<= 1; code <<= 1; len++; } left = (MAXBITS + 1) - len; if (left == 0) break; if (s->incnt == s->inlen) longjmp(s->env, 1); bitbuf = s->in[s->incnt++]; if (left > 8) left = 8; } return -10; } static int puff_construct(struct puff_huffman* h, const short* length, int n) { int len; for (len = 0; len <= MAXBITS; len++) h->count[len] = 0; int symbol; for (symbol = 0; symbol < n; symbol++) (h->count[length[symbol]])++; if (h->count[0] == n) return 0; int left = 1; for (len = 1; len <= MAXBITS; len++) { left <<= 1; left -= h->count[len]; if (left < 0) return left; } short offs[MAXBITS + 1]; offs[1] = 0; for (len = 1; len < MAXBITS; len++) offs[len + 1] = offs[len] + h->count[len]; for (symbol = 0; symbol < n; symbol++) if (length[symbol] != 0) h->symbol[offs[length[symbol]]++] = symbol; return left; } static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode, const struct puff_huffman* distcode) { static const short lens[29] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258}; static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; static const short dists[30] = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}; static const short dext[30] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; int symbol; do { symbol = puff_decode(s, lencode); if (symbol < 0) return symbol; if (symbol < 256) { if (s->outcnt == s->outlen) return 1; if (symbol) s->out[s->outcnt] = symbol; s->outcnt++; } else if (symbol > 256) { symbol -= 257; if (symbol >= 29) return -10; int len = lens[symbol] + puff_bits(s, lext[symbol]); symbol = puff_decode(s, distcode); if (symbol < 0) return symbol; unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]); if (dist > s->outcnt) return -11; if (s->outcnt + len > s->outlen) return 1; while (len--) { if (dist <= s->outcnt && s->out[s->outcnt - dist]) s->out[s->outcnt] = s->out[s->outcnt - dist]; s->outcnt++; } } } while (symbol != 256); return 0; } static int puff_fixed(struct puff_state* s) { static int virgin = 1; static short lencnt[MAXBITS + 1], lensym[FIXLCODES]; static short distcnt[MAXBITS + 1], distsym[MAXDCODES]; static struct puff_huffman lencode, distcode; if (virgin) { lencode.count = lencnt; lencode.symbol = lensym; distcode.count = distcnt; distcode.symbol = distsym; short lengths[FIXLCODES]; int symbol; for (symbol = 0; symbol < 144; symbol++) lengths[symbol] = 8; for (; symbol < 256; symbol++) lengths[symbol] = 9; for (; symbol < 280; symbol++) lengths[symbol] = 7; for (; symbol < FIXLCODES; symbol++) lengths[symbol] = 8; puff_construct(&lencode, lengths, FIXLCODES); for (symbol = 0; symbol < MAXDCODES; symbol++) lengths[symbol] = 5; puff_construct(&distcode, lengths, MAXDCODES); virgin = 0; } return puff_codes(s, &lencode, &distcode); } static int puff_dynamic(struct puff_state* s) { static const short order[19] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; int nlen = puff_bits(s, 5) + 257; int ndist = puff_bits(s, 5) + 1; int ncode = puff_bits(s, 4) + 4; if (nlen > MAXLCODES || ndist > MAXDCODES) return -3; short lengths[MAXCODES]; int index; for (index = 0; index < ncode; index++) lengths[order[index]] = puff_bits(s, 3); for (; index < 19; index++) lengths[order[index]] = 0; short lencnt[MAXBITS + 1], lensym[MAXLCODES]; struct puff_huffman lencode = {lencnt, lensym}; int err = puff_construct(&lencode, lengths, 19); if (err != 0) return -4; index = 0; while (index < nlen + ndist) { int symbol; int len; symbol = puff_decode(s, &lencode); if (symbol < 0) return symbol; if (symbol < 16) lengths[index++] = symbol; else { len = 0; if (symbol == 16) { if (index == 0) return -5; len = lengths[index - 1]; symbol = 3 + puff_bits(s, 2); } else if (symbol == 17) symbol = 3 + puff_bits(s, 3); else symbol = 11 + puff_bits(s, 7); if (index + symbol > nlen + ndist) return -6; while (symbol--) lengths[index++] = len; } } if (lengths[256] == 0) return -9; err = puff_construct(&lencode, lengths, nlen); if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1])) return -7; short distcnt[MAXBITS + 1], distsym[MAXDCODES]; struct puff_huffman distcode = {distcnt, distsym}; err = puff_construct(&distcode, lengths + nlen, ndist); if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1])) return -8; return puff_codes(s, &lencode, &distcode); } static int puff(unsigned char* dest, unsigned long* destlen, const unsigned char* source, unsigned long sourcelen) { struct puff_state s = { .out = dest, .outlen = *destlen, .outcnt = 0, .in = source, .inlen = sourcelen, .incnt = 0, .bitbuf = 0, .bitcnt = 0, }; int err; if (setjmp(s.env) != 0) err = 2; else { int last; do { last = puff_bits(&s, 1); int type = puff_bits(&s, 2); err = type == 0 ? puff_stored(&s) : (type == 1 ? puff_fixed(&s) : (type == 2 ? puff_dynamic(&s) : -1)); if (err != 0) break; } while (!last); } *destlen = s.outcnt; return err; } //% END CODE DERIVED FROM puff.{c,h} #define ZLIB_HEADER_WIDTH 2 static int puff_zlib_to_file(const unsigned char* source, unsigned long sourcelen, int dest_fd) { if (sourcelen < ZLIB_HEADER_WIDTH) return 0; source += ZLIB_HEADER_WIDTH; sourcelen -= ZLIB_HEADER_WIDTH; const unsigned long max_destlen = 132 << 20; void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0); if (ret == MAP_FAILED) return -1; unsigned char* dest = (unsigned char*)ret; unsigned long destlen = max_destlen; int err = puff(dest, &destlen, source, sourcelen); if (err) { munmap(dest, max_destlen); errno = -err; return -1; } if (write(dest_fd, dest, destlen) != (ssize_t)destlen) { munmap(dest, max_destlen); return -1; } return munmap(dest, max_destlen); } static int setup_loop_device(unsigned char* data, unsigned long size, const char* loopname, int* loopfd_p) { int err = 0, loopfd = -1; int memfd = syscall(__NR_memfd_create, "syzkaller", 0); if (memfd == -1) { err = errno; goto error; } if (puff_zlib_to_file(data, size, memfd)) { err = errno; goto error_close_memfd; } loopfd = open(loopname, O_RDWR); if (loopfd == -1) { err = errno; goto error_close_memfd; } if (ioctl(loopfd, LOOP_SET_FD, memfd)) { if (errno != EBUSY) { err = errno; goto error_close_loop; } ioctl(loopfd, LOOP_CLR_FD, 0); usleep(1000); if (ioctl(loopfd, LOOP_SET_FD, memfd)) { err = errno; goto error_close_loop; } } close(memfd); *loopfd_p = loopfd; return 0; error_close_loop: close(loopfd); error_close_memfd: close(memfd); error: errno = err; return -1; } static void reset_loop_device(const char* loopname) { int loopfd = open(loopname, O_RDWR); if (loopfd == -1) { return; } if (ioctl(loopfd, LOOP_CLR_FD, 0)) { } close(loopfd); } static long syz_mount_image(volatile long fsarg, volatile long dir, volatile long flags, volatile long optsarg, volatile long change_dir, volatile unsigned long size, volatile long image) { unsigned char* data = (unsigned char*)image; int res = -1, err = 0, need_loop_device = !!size; char* mount_opts = (char*)optsarg; char* target = (char*)dir; char* fs = (char*)fsarg; char* source = NULL; char loopname[64]; if (need_loop_device) { int loopfd; memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; close(loopfd); source = loopname; } mkdir(target, 0777); char opts[256]; memset(opts, 0, sizeof(opts)); if (strlen(mount_opts) > (sizeof(opts) - 32)) { } strncpy(opts, mount_opts, sizeof(opts) - 32); if (strcmp(fs, "iso9660") == 0) { flags |= MS_RDONLY; } else if (strncmp(fs, "ext", 3) == 0) { bool has_remount_ro = false; char* remount_ro_start = strstr(opts, "errors=remount-ro"); if (remount_ro_start != NULL) { char after = *(remount_ro_start + strlen("errors=remount-ro")); char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1); has_remount_ro = ((before == '\0' || before == ',') && (after == '\0' || after == ',')); } if (strstr(opts, "errors=panic") || !has_remount_ro) strcat(opts, ",errors=continue"); } else if (strcmp(fs, "xfs") == 0) { strcat(opts, ",nouuid"); } res = mount(source, target, fs, flags, opts); if (res == -1) { err = errno; goto error_clear_loop; } res = open(target, O_RDONLY | O_DIRECTORY); if (res == -1) { err = errno; goto error_clear_loop; } if (change_dir) { res = chdir(target); if (res == -1) { err = errno; } } error_clear_loop: if (need_loop_device) reset_loop_device(loopname); errno = err; return res; } static int inject_fault(int nth) { int fd; fd = open("/proc/thread-self/fail-nth", O_RDWR); if (fd == -1) exit(1); char buf[16]; sprintf(buf, "%d", nth); if (write(fd, buf, strlen(buf)) != (ssize_t)strlen(buf)) exit(1); return fd; } 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 const char* setup_fault() { int fd = open("/proc/self/make-it-fail", O_WRONLY); if (fd == -1) return "CONFIG_FAULT_INJECTION is not enabled"; close(fd); fd = open("/proc/thread-self/fail-nth", O_WRONLY); if (fd == -1) return "kernel does not have systematic fault injection support"; close(fd); static struct { const char* file; const char* val; bool fatal; } files[] = { {"/sys/kernel/debug/failslab/ignore-gfp-wait", "N", true}, {"/sys/kernel/debug/fail_futex/ignore-private", "N", false}, {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", "N", false}, {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", "N", false}, {"/sys/kernel/debug/fail_page_alloc/min-order", "0", false}, }; unsigned i; for (i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].file, files[i].val)) { if (files[i].fatal) return "failed to write fault injection file"; } } return NULL; } 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 < 2; 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 == 1 ? 4000 : 0)); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { 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 (;;) { 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; } } } void execute_call(int call) { switch (call) { case 0: inject_fault(6); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0xb36000ul, /*prot=PROT_GROWSUP|PROT_SEM|PROT_WRITE|PROT_READ|PROT_EXEC*/ 0x200000ful, /*flags=MAP_UNINITIALIZED|MAP_POPULATE|MAP_FIXED|MAP_ANONYMOUS|0x2*/ 0x4008032ul, /*fd=*/-1, /*offset=*/0ul); break; case 1: memcpy((void*)0x20000040, "ext4\000", 5); memcpy((void*)0x20000740, "./file0\000", 8); memcpy((void*)0x20000900, "dioread_lock", 12); *(uint8_t*)0x2000090c = 0x2c; memcpy((void*)0x2000090d, "noblock_validity", 16); *(uint8_t*)0x2000091d = 0x2c; memcpy((void*)0x2000091e, "data_err=abort", 14); *(uint8_t*)0x2000092c = 0x2c; memcpy((void*)0x2000092d, "init_itable", 11); *(uint8_t*)0x20000938 = 0x2c; memcpy((void*)0x20000939, "auto_da_alloc", 13); *(uint8_t*)0x20000946 = 0x2c; memcpy((void*)0x20000947, "grpjquota=", 10); *(uint8_t*)0x20000951 = 0x2e; memcpy((void*)0x20000952, "nouid32", 7); *(uint8_t*)0x20000959 = 0x2c; memcpy((void*)0x2000095a, "errors=remount-ro", 17); *(uint8_t*)0x2000096b = 0x2c; memcpy((void*)0x2000096c, "jqfmt=vfsv1", 11); *(uint8_t*)0x20000977 = 0x2c; memcpy((void*)0x20000978, "grpid", 5); *(uint8_t*)0x2000097d = 0x2c; *(uint8_t*)0x2000097e = 0x2c; memcpy( (void*)0x20000280, "\x78\x9c\xec\xdc\xcb\x6f\x1b\xc5\x1f\x00\xf0\xef\x6e\x1e\x7d\x37\x69" "\x7f\xfd\x01\x7d\x40\x0d\x05\x11\x51\x48\x9a\xb4\x40\x0f\x1c\x00\x81" "\xd4\x0b\x12\x12\x1c\xca\x31\xa4\xa1\x2a\x4d\x5b\xd4\x04\x89\x56\x15" "\x0d\x08\x95\x23\xe2\x2f\x00\x8e\x48\x48\x9c\xb8\x70\x02\x09\x21\xe0" "\x04\xe2\x0a\x77\x84\x54\xa1\x5e\x5a\x38\x20\xa3\xb5\x77\x13\xbb\xb1" "\x1d\xc7\x79\x18\xea\xcf\x47\xb2\x33\xb3\x0f\xcf\x7c\x77\x77\xd6\xb3" "\x3b\x59\x07\xd0\xb3\x4a\xd9\x5b\x12\xb1\x3d\x22\x7e\x89\x88\xa1\x6a" "\xb6\x7e\x81\x52\xf5\xcf\xad\x1b\x57\xa6\xfe\xbc\x71\x65\x2a\x89\x72" "\xf9\xa5\x3f\x92\xca\x72\x37\x6f\x5c\x99\x2a\x16\x2d\xd6\xdb\x96\x67" "\x46\xd2\x88\xf4\xbd\x24\xf6\x37\x28\x77\xf6\xd2\xe5\xb3\x93\x33\x33" "\xd3\x17\xf3\xfc\xd8\xdc\xb9\x37\xc6\x66\x2f\x5d\x7e\xec\xcc\xb9\xc9" "\xd3\xd3\xa7\xa7\xcf\x4f\x1c\x3f\x7e\xec\xe8\xf8\x93\x4f\x4c\x3c\xde" "\x56\x1c\x57\x97\x99\x9f\xc5\x75\x73\xdf\xdb\x17\x0e\xec\x3d\xf1\xca" "\x87\x2f\x4c\x95\xe3\xd5\xef\x3f\xcb\xea\xbb\x3d\x9f\x5f\x1b\x47\xd5" "\x70\x5b\xe5\xb6\x52\x8a\x52\x94\x73\x8b\x53\x07\x2b\xef\x0f\xad\xfa" "\xd3\xff\x5d\x76\xd4\xa4\x93\xfe\x2e\x56\x84\x15\xe9\x8b\x88\x6c\x77" "\x0d\x54\xda\xff\x50\xf4\xc5\xe2\xce\x1b\x8a\xe7\xdf\x5d\xc8\x7c\xd3" "\xa5\x0a\x02\xeb\x26\xfb\x6e\xda\xb5\x64\x6a\x5f\xfe\x37\x5d\xf8\xfe" "\x02\xee\x44\x89\x36\x0e\x3d\xaa\xf8\xc6\xcf\xae\x7f\x8b\xd7\x46\xf6" "\x3f\xba\xed\xfa\x33\xd9\xfb\x74\x25\xfe\x5b\xf9\xab\x3a\xa7\x3f\xd2" "\xec\x5a\x76\xb8\x7a\xc5\xde\xd7\x64\xfd\xbb\x5a\x7f\x7c\x79\x68\x99" "\xf2\xb7\x47\xc4\xc9\xf9\xbf\x3e\xca\x5e\xd1\xf0\x3e\x04\x00\xc0\xda" "\xfa\x2a\xeb\xff\x3c\xda\xa8\xff\x97\xd6\xf5\x6d\x76\xe6\x63\x28\xc3" "\x11\x71\x38\x22\x76\x47\xc4\xff\x22\x62\x4f\x44\xfc\x3f\xef\x07\xdd" "\x1d\x11\xf7\xac\xb0\xfc\xd2\x6d\xf9\xa5\xfd\x9f\x9f\xb6\x74\x14\x58" "\x9b\xb2\xfe\xdf\x53\xf9\xd8\x56\x7d\xff\x2f\xcd\x97\x48\x16\x72\x3b" "\x2a\xf1\x0f\x24\xaf\x9d\x99\x99\x3e\x92\x6f\x93\x91\x18\xd8\x94\xe5" "\xc7\x5b\x94\xf1\xf5\x73\x3f\x7f\xd0\x6c\x5e\xa9\xa6\xff\x97\xbd\xb2" "\xf2\x8b\xbe\x60\x5e\x8f\xdf\xfb\x37\xd5\xaf\x73\x6a\x72\x6e\x72\x15" "\x21\xd7\xb9\xfe\x4e\xc4\xbe\xfe\x46\xf1\x27\x0b\x23\x01\xd9\x16\xd8" "\x1b\x11\xfb\x3a\xf8\xfc\x6c\x9b\x9d\x79\xe4\xd3\x03\x59\x7a\xe7\xb6" "\xa5\xf3\x97\x8f\xbf\x85\x35\x18\x67\x2a\x7f\x12\xf1\x70\x75\xff\xcf" "\xc7\x6d\xf1\x17\x92\x6a\x49\xcd\xc6\x27\xc7\x36\xc7\xcc\xf4\x91\xb1" "\xe2\xa8\x58\xea\x87\x1f\xaf\xbd\x58\x9b\x1f\xa8\x49\xd7\xc5\xbf\xb9" "\xbd\x98\x36\x77\x1a\x6c\x03\xd9\xfe\xdf\xda\xf0\xf8\xcf\xe3\x2f\x9a" "\x41\x31\x5e\x3b\xbb\xf2\x32\xae\xfd\xfa\x7e\xd3\x6b\x9a\xa5\xfb\x3f" "\x89\x93\xf3\xb5\x4b\xe4\xc7\x7f\xcd\x59\x20\x3b\xfe\x07\x93\x97\x2b" "\xe9\xc1\x7c\xda\x5b\x93\x73\x73\x17\xc7\x23\x06\xf3\x09\x75\xd3\x27" "\x16\xd7\x2d\xf2\xc5\xf2\x59\xfc\x23\x87\x1a\xb7\xff\xdd\x11\x7f\x7f" "\x9c\xaf\xb7\x3f\x22\xb2\x83\xf8\xde\x88\xb8\x2f\x22\x0e\xe6\x75\xbf" "\x3f\x22\x1e\x88\x88\x43\x2d\xe2\xff\xee\xd9\x07\x5f\x6f\xbd\x85\x3a" "\x3c\xfe\xd7\x40\x16\xff\xa9\x56\xfb\x3f\x62\x38\xa9\x1d\xaf\xef\x20" "\xd1\x77\xf6\xdb\x2f\x9b\x95\xdf\xde\xf9\xef\x58\x25\x35\x92\x4f\x69" "\xe7\xfc\xd7\x6e\x05\x57\xb3\xed\x00\x00\x00\xe0\xbf\x22\xad\x8c\x41" "\x27\xe9\x68\x91\xae\xb9\x39\xb5\x27\xb6\xa6\x33\x17\x66\xe7\x0e\x97" "\xe2\xcd\xf3\xa7\xaa\x63\xd5\xc3\x31\x90\x16\x77\xba\x86\x6a\xee\x87" "\x8e\xe7\xf7\x86\x8b\xfc\xc4\x6d\xf9\xa3\x11\xb1\xab\xf2\x9f\x46\x5b" "\x2a\xf9\xd1\xa9\x0b\x33\x3b\xba\x19\x38\x50\x79\x56\xa7\xae\xfd\x47" "\x9a\x8e\x8e\x56\xe7\xfd\xd6\xec\x9f\x5e\x80\x3b\xc7\x8a\xc6\xd1\x6a" "\x9f\x0e\xfc\xfc\x8b\xb5\xaf\x0c\xb0\xa1\x3c\xaf\x09\xbd\x4b\xfb\x87" "\xde\xa5\xfd\x43\xef\xd2\xfe\xa1\x77\x35\x6a\xff\x57\x23\x6e\x75\xa1" "\x2a\xc0\x06\xf3\xfd\x0f\xbd\x4b\xfb\x87\xde\xa5\xfd\x43\xef\xd2\xfe" "\xa1\x27\x2d\x7d\x24\xbe\xf8\xa1\x85\x4e\x9e\xf4\x5f\x4c\xec\x3e\xb1" "\xaa\xd5\xd7\x3d\x51\x1e\x5a\x97\x4f\x9e\x5f\xf9\x5a\x7d\xeb\x14\x69" "\xd4\xfe\x68\x47\xd3\x44\x12\x11\x9d\x15\x11\x69\xeb\x65\x06\xdb\x28" "\xbd\x6b\x89\x74\xd9\x65\x9e\x5e\x6e\xb3\x0c\xac\xea\x37\x31\xb2\xc4" "\xc1\x3c\xb1\x29\x22\xda\x5d\xeb\xea\x86\x6d\xd5\xe2\x0c\x91\x24\x5d" "\x3b\x39\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\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xac\x81\x7f\x02\x00\x00\xff\xff" "\x33\x06\xdd\x8e", 1211); syz_mount_image( /*fs=*/0x20000040, /*dir=*/0x20000740, /*flags=MS_LAZYTIME|MS_NOSUID|MS_NODEV|MS_NOATIME|0x20000000*/ 0x22000406, /*opts=*/0x20000900, /*chdir=*/0x84, /*size=*/0x4bb, /*img=*/0x20000280); break; } } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup " "failed: %s\n", reason); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }