// https://syzkaller.appspot.com/bug?id=a1954eed3adfde914df9a0a2d0b7d1ecb876072f // 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 #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 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 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 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; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } *(uint64_t*)0x20000140 = 8; *(uint64_t*)0x20000148 = 0x20000008b; syscall(__NR_prlimit64, /*pid=*/0, /*res=RLIMIT_RTPRIO*/ 0xeul, /*new=*/0x20000140ul, /*old=*/0ul); *(uint32_t*)0x20000080 = 7; syscall(__NR_sched_setscheduler, /*pid=*/0, /*policy=SCHED_FIFO*/ 1ul, /*prio=*/0x20000080ul); syscall(__NR_io_destroy, /*ctx=*/0ul); memcpy((void*)0x20000040, "ext4\000", 5); memcpy((void*)0x200001c0, "./file0\000", 8); memcpy((void*)0x20000380, "init_itable", 11); *(uint8_t*)0x2000038b = 0x2c; memcpy((void*)0x2000038c, "commit", 6); *(uint8_t*)0x20000392 = 0x3d; sprintf((char*)0x20000393, "0x%016llx", (long long)0); *(uint8_t*)0x200003a5 = 0x2c; memcpy((void*)0x200003a6, "barrier", 7); *(uint8_t*)0x200003ad = 0x3d; sprintf((char*)0x200003ae, "0x%016llx", (long long)3); *(uint8_t*)0x200003c0 = 0x2c; memcpy((void*)0x200003c1, "debug_want_extra_isize", 22); *(uint8_t*)0x200003d7 = 0x3d; sprintf((char*)0x200003d8, "0x%016llx", (long long)0x80); *(uint8_t*)0x200003ea = 0x2c; memcpy((void*)0x200003eb, "block_validity", 14); *(uint8_t*)0x200003f9 = 0x2c; memcpy((void*)0x200003fa, "jqfmt=vfsv1", 11); *(uint8_t*)0x20000405 = 0x2c; *(uint8_t*)0x20000406 = 0; memcpy( (void*)0x20001cc0, "\x78\x9c\xec\xdb\xcf\x6f\x14\x55\x1c\x00\xf0\xef\xcc\xb6\x45\x28\xd8\x8a" "\xf8\x83\x82\x5a\x45\x63\xe3\x8f\x96\x16\x54\x0e\x5e\x34\x9a\x78\xd0\xc4" "\x44\x0f\x78\xac\x6d\x21\x95\x85\x1a\x5a\x13\x21\x8d\x56\x63\xf0\x68\x48" "\xbc\x1b\x8f\x26\xfe\x05\x9e\xf4\x62\xd4\x93\x89\x57\xbd\x1b\x12\x62\x7a" "\x01\x3d\xad\x99\xdd\x99\x76\xbb\xdd\x2d\x6d\xd9\x76\xd1\xfd\x7c\x92\x81" "\xf7\x66\xde\xe6\x7d\xbf\x3b\xf3\x76\xdf\xcc\xeb\x06\xd0\xb5\x86\xb3\x7f" "\x92\x88\xfd\x11\xf1\x7b\x44\x0c\xd4\xaa\x6b\x1b\x0c\xd7\xfe\xbb\xb9\xbc" "\x38\xf5\xf7\xf2\xe2\x54\x12\x95\xca\x5b\x7f\x25\xd5\x76\x37\x96\x17\xa7" "\x8a\xa6\xc5\xeb\xfa\xf3\xca\x48\x1a\x91\x7e\x96\xc4\x91\x26\xfd\xce\x5f" "\xba\x7c\x6e\xb2\x5c\x9e\xb9\x98\xd7\xc7\x16\xce\xbf\x3f\x36\x7f\xe9\xf2" "\xb3\xb3\xe7\x27\xcf\xce\x9c\x9d\xb9\x30\x71\xea\xd4\xc9\x13\xe3\x2f\x3c" "\x3f\xf1\x5c\x5b\xf2\xcc\x62\xba\x31\xf4\xd1\xdc\xd1\xc3\xaf\xbd\x73\xf5" "\x8d\xa9\xd3\x57\xdf\xfd\xf9\xdb\xa4\xc8\xbf\x21\x8f\x36\x19\xde\xe8\xe0" "\x13\x95\x4a\x9b\xbb\xeb\xac\x03\x75\xe5\xa4\xa7\x83\x81\xb0\x25\xa5\x88" "\xc8\x4e\x57\x6f\x75\xfc\x0f\x44\x29\x56\x4f\xde\x40\xbc\xfa\x69\x47\x83" "\x03\x76\x54\xa5\x52\xa9\xf4\xb7\x3e\xbc\x54\x01\xfe\xc7\x92\xe8\x74\x04" "\x40\x67\x14\x5f\xf4\xd9\xfd\x6f\xb1\xed\xd2\xd4\xe3\x8e\x70\xfd\xa5\xda" "\x0d\x50\x96\xf7\xcd\x7c\xab\x1d\xe9\x89\x34\x6f\xd3\xdb\x70\x7f\xdb\x4e" "\xc3\x11\x71\x7a\xe9\x9f\xaf\xb2\x2d\x76\xe6\x39\x04\x00\xc0\x1a\xdf\x67" "\xf3\x9f\x67\x9a\xcd\xff\xd2\xb8\xbf\xae\xdd\xdd\xf9\xda\xd0\x60\x44\xdc" "\x13\x11\x07\x23\xe2\xde\x88\x38\x14\x11\xf7\x45\x54\xdb\x3e\x10\x11\x0f" "\x6e\xb1\xff\xc6\x45\x92\xf5\xf3\x9f\xf4\xda\xb6\x12\xdb\xa4\x6c\xfe\xf7" "\x62\xbe\xb6\xb5\x76\xfe\x57\xcc\xfe\x62\xb0\x94\xd7\x0e\x54\xf3\xef\x4d" "\xce\xcc\x96\x67\x8e\xe7\xef\xc9\x48\xf4\xee\xc9\xea\xe3\x1b\xf4\xf1\xc3" "\x2b\xbf\x7d\xd1\xea\x58\xfd\xfc\x2f\xdb\xb2\xfe\x8b\xb9\x60\x1e\xc7\xb5" "\x9e\x3d\x6b\x5f\x33\x3d\xb9\x30\x79\x3b\x39\xd7\xbb\xfe\x49\xc4\x50\x4f" "\xb3\xfc\x93\x95\x95\x80\x24\x22\x0e\x47\xc4\xd0\x36\xfb\x98\x7d\xea\x9b" "\xa3\xad\x8e\xdd\x3a\xff\x0d\xb4\x61\x9d\xa9\xf2\x75\xc4\x93\xb5\xf3\xbf" "\x14\x0d\xf9\x17\x92\x8d\xd7\x27\xc7\xee\x8a\xf2\xcc\xf1\xb1\xe2\xaa\x58" "\xef\x97\x5f\xaf\xbc\xd9\xaa\xff\xdb\xca\xbf\x0d\xb2\xf3\xbf\xaf\xe9\xf5" "\xbf\x92\xff\x60\x52\xbf\x5e\x3b\xbf\xf5\x3e\xae\xfc\xf1\x79\xcb\x7b\x9a" "\xed\x5e\xff\x7d\xc9\xdb\xd5\x72\x5f\xbe\xef\xc3\xc9\x85\x85\x8b\xe3\x11" "\x7d\xc9\xeb\xb5\xa0\xeb\xf7\x4f\xac\xbe\xb6\xa8\x17\xed\xb3\xfc\x47\x8e" "\x35\x1f\xff\x07\x63\xf5\x9d\x38\x12\x11\xd9\x45\xfc\x50\x44\x3c\x1c\x11" "\x8f\xe4\xb1\x3f\x1a\x11\x8f\x45\xc4\xb1\x0d\xf2\xff\xe9\xe5\xc7\xdf\xdb" "\x7e\xfe\x3b\x2b\xcb\x7f\x7a\x4b\xe7\x7f\xb5\xd0\x17\x8d\x7b\x9a\x17\x4a" "\xe7\x7e\xfc\x6e\x4d\xa7\x83\x5b\xc9\x3f\x3b\xff\x27\xab\xa5\x91\x7c\xcf" "\x66\x3e\xff\x36\x13\xd7\xf6\xae\x66\x00\x00\x00\xf8\xef\x49\x23\x62\x7f" "\x24\xe9\xe8\x4a\x39\x4d\x47\x47\x6b\x7f\x2f\x7f\x28\xf6\xa5\xe5\xb9\xf9" "\x85\xa7\xcf\xcc\x7d\x70\x61\xba\xf6\x1b\x81\xc1\xe8\x4d\x8b\x27\x5d\x03" "\x75\xcf\x43\xc7\xf3\xdb\xfa\xa2\x3e\xd1\x50\x3f\x91\x3f\x37\xfe\xb2\xb4" "\xb7\x5a\x1f\x9d\x9a\x2b\x4f\x77\x3a\x79\xe8\x72\xfd\x2d\xc6\x7f\xe6\xcf" "\x52\xa7\xa3\x03\x76\x9c\xdf\x6b\x41\xf7\x32\xfe\xa1\x7b\x19\xff\xd0\xbd" "\x8c\x7f\xe8\x5e\x4d\xc6\xff\xde\x4e\xc4\x01\xec\xbe\x66\xdf\xff\x1f\x77" "\x20\x0e\x60\xf7\x35\x8c\x7f\xcb\x7e\xd0\x45\xdc\xff\x43\xf7\x32\xfe\xa1" "\x7b\x19\xff\xd0\x95\xe6\xf7\xc6\xad\x7f\x24\xaf\xa0\xb0\xae\x10\xe9\x1d" "\x11\x86\xc2\x0e\x15\x3a\xfd\xc9\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\xd0\x1e\xff\x06\x00\x00\xff\xff\x92\xd7\xe6\xcf", 1076); syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x200001c0, /*flags=MS_NOSUID|MS_NOEXEC|MS_NODEV*/ 0xe, /*opts=*/0x20000380, /*chdir=*/3, /*size=*/0x434, /*img=*/0x20001cc0); memcpy((void*)0x20000040, "./bus\000", 6); syscall(__NR_creat, /*file=*/0x20000040ul, /*mode=*/0ul); memcpy((void*)0x20000340, "./file2\000", 8); syscall(__NR_truncate, /*file=*/0x20000340ul, /*len=*/0ul); memcpy((void*)0x20000140, "vfat\000", 5); memcpy((void*)0x20000040, "\023\023w\305\3745\324\024T\325\324\035)\255\032`)" "Y\201F\346\276\026nA\255\r\275@T\003<\2373\273\332\202$" "\242\363\327r\347cnH\263<\277p\203r\350\361\271\223>" "\305\022wC\276\"\006 \236\360-\371\313\362\366\350\200\3238/\000", 78); syz_mount_image( /*fs=*/0x20000140, /*dir=*/0x20000040, /*flags=MS_I_VERSION|MS_SYNCHRONOUS|MS_RDONLY|MS_NOSUID|MS_MOVE|0x40*/ 0x802053, /*opts=*/0, /*chdir=*/0xfc, /*size=*/0, /*img=*/0x200000c0); memcpy((void*)0x20000300, ".\000", 2); res = syscall(__NR_open, /*file=*/0x20000300ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[0] = res; memcpy((void*)0x20000240, "\023\023w\305\3745\324\024T\325\324\035)\255\032`)" "Y\201F\346\276\026nA\255\r\275@T\003<\2373\273\332\202$" "\242\363\327r\347cnH\263<\277p\203r\350\361\271\223>" "\305\022wC\276\"\006 \236\360-\371\313\362\366\350\200\3238/\000", 78); memcpy( (void*)0x200003c0, "\023\023w\305\3745\324\024T\325\324\035)\255\032`)" "Y\201F\346\276\026nA\255\r\275@T\003<\2373\273\332\202$" "\242\363\327r\347cnH\263<\277p\203r\350\361\271\223>" "\305\022wC\276\"\006 \236\360-\371\313\362\366\350\200\3238//file0\000", 84); syscall(__NR_symlinkat, /*old=*/0x20000240ul, /*newfd=*/r[0], /*new=*/0x200003c0ul); } 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; loop(); return 0; }