// https://syzkaller.appspot.com/bug?id=ba84cc80a9491d65416bc7877e1650c87530fe8a // 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 279 #endif #ifndef __NR_mkdirat #define __NR_mkdirat 34 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_openat #define __NR_openat 56 #endif #ifndef __NR_renameat2 #define __NR_renameat2 276 #endif #ifndef __NR_setxattr #define __NR_setxattr 5 #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) { errno = EMSGSIZE; return -1; } 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, 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) { if (strstr(opts, "errors=panic") || strstr(opts, "errors=remount-ro") == 0) 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 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[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; memcpy((void*)0x20000140, "ext4\000", 5); memcpy((void*)0x200000c0, "./file0\000", 8); *(uint32_t*)0x20000380 = 0; sprintf((char*)0x20000384, "0x%016llx", (long long)-1); *(uint16_t*)0x20000396 = -1; *(uint8_t*)0x20000398 = -1; *(uint16_t*)0x20000399 = -1; sprintf((char*)0x2000039b, "%023llo", (long long)-1); memcpy( (void*)0x200004c0, "\x78\x9c\xec\xdb\xcb\x6f\x1b\x45\x18\x00\xf0\x6f\xd7\x71\x0b\x7d\x90\x50" "\xca\xa3\x0f\xc0\x50\x10\x11\x8f\xa4\x49\x0b\xf4\x80\x84\x40\x20\x71\x00" "\x09\x09\x0e\xe5\x18\x12\xa7\x0a\x75\x1b\xd4\x04\x89\x56\x11\x04\x84\xca" "\x11\x55\xe2\x8e\x38\x22\xf1\x17\x70\x82\x0b\x02\x4e\x48\x5c\xe1\x8e\x2a" "\x55\x28\x97\x16\x4e\x46\x6b\xaf\x13\x27\xd8\x21\x0f\xa7\x86\xee\xef\x27" "\x6d\x32\xe3\x1d\x6b\xe6\xdb\xdd\xb1\x67\x67\xd6\x01\x14\x56\x25\xfb\x93" "\x44\xec\x8b\x88\x5f\x23\x62\xb0\x99\x5d\x5d\xa0\xd2\xfc\x77\x63\x69\x61" "\xf2\xcf\xa5\x85\xc9\x24\xea\xf5\x37\xfe\x48\x1a\xe5\xae\x2f\x2d\x4c\xb6" "\x8a\xb6\xde\xb7\x37\xcf\x0c\xa7\x11\xe9\x27\x49\x1c\xe9\x50\xef\xdc\xc5" "\x4b\x67\x27\x6a\xb5\xea\x85\x3c\x3f\x3a\x7f\xee\xdd\xd1\xb9\x8b\x97\x9e" "\x9a\x39\x37\x71\xa6\x7a\xa6\x7a\x7e\xfc\xd4\xa9\x93\x27\xc6\x9e\x7d\x66" "\xfc\xe9\x9e\xc4\x99\xc5\x75\xfd\xf0\x07\xb3\x47\x0f\xbd\xf2\xd6\x95\xd7" "\x26\x4f\x5f\x79\xfb\xc7\xaf\xb3\xf6\xee\xcb\xf7\xb7\xc7\xd1\x2b\x95\xa8" "\xac\x3e\x96\x6d\x1e\xed\x75\x65\x7d\xb6\xbf\x2d\x9d\x0c\xf4\xb1\x21\x6c" "\x4a\x29\x22\xb2\xd3\x55\x6e\xf4\xff\xc1\x28\xc5\xca\xc9\x1b\x8c\x97\x3f" "\xee\x6b\xe3\x80\x1d\x55\xaf\xd7\xeb\xbb\xbb\xef\x5e\xac\x03\xb7\xb0\x24" "\xfa\xdd\x02\xa0\x3f\x5a\x5f\xf4\xd9\xfd\x6f\x6b\xbb\x49\x43\x8f\xff\x84" "\x6b\x2f\x34\x6f\x80\xb2\xb8\x6f\xe4\x5b\x73\xcf\x40\xa4\x79\x99\xf2\x9a" "\xfb\xdb\x5e\xaa\x44\xc4\xe9\xc5\xbf\xbe\xc8\xb6\xd8\xa1\x79\x08\x00\x80" "\x76\xdf\x66\xe3\x9f\x27\x3b\x8d\xff\xd2\xb8\xa7\xad\xdc\x1d\xf9\x1a\xca" "\x50\x44\xdc\x19\x11\x07\x22\xe2\xae\x88\x38\x18\x11\x77\x47\x34\xca\xde" "\x1b\x11\xf7\x6d\xb2\xfe\xca\x9a\xfc\x3f\xc7\x3f\xe9\xd5\x2d\x05\xb6\x41" "\xd9\xf8\xef\xb9\x7c\x6d\x6b\xf5\xf8\x2f\xcd\x67\xc6\x63\xa8\x94\xe7\xf6" "\x37\xe2\x2f\x27\xd3\x33\xcf\x57\x8f\xe7\xc7\x64\x38\xca\xbb\xa7\x67\x6a" "\xd5\xb1\x75\xea\xf8\xee\xa5\x5f\x3e\xeb\xb6\xaf\x7d\xfc\x97\x6d\x59\xfd" "\xad\xb1\x60\xde\x8e\xab\x03\x6b\x26\xe8\xa6\x26\xe6\x27\xb6\x1b\x77\xcb" "\xb5\x8f\x22\x0e\x0f\x74\x8a\x3f\x59\x5e\x09\x48\x22\xe2\x50\x44\x1c\xde" "\x62\x1d\x33\x8f\x7f\x75\xb4\xdb\xbe\x7f\x8f\x7f\x1d\x3d\x58\x67\xaa\x7f" "\x19\xf1\x58\xf3\xfc\x2f\xc6\x9a\xf8\x5b\x92\xf5\xd7\x27\x47\x6f\x8b\x5a" "\xf5\xf8\x68\x76\x15\x1c\xef\x58\xc7\x4f\x3f\x5f\x7e\xbd\x5b\xfd\xdb\x8a" "\xbf\x07\xb2\xf3\xbf\xa7\xe3\xf5\xbf\x1c\xff\x50\xd2\xbe\x5e\x3b\xb7\xf9" "\x3a\x2e\xff\xf6\x69\xd7\x7b\x9a\xad\x5e\xff\xbb\x92\x37\x1b\x2d\xdc\x95" "\xbf\xf6\xfe\xc4\xfc\xfc\x85\xb1\x88\x5d\xc9\xab\x8d\xfc\xaa\xd7\xc7\x57" "\xde\xdb\xca\xb7\xca\x67\xf1\x0f\x1f\xeb\xdc\xff\x0f\xc4\xca\x91\x38\x12" "\x11\xd9\x45\x7c\x7f\x44\x3c\x10\x11\x0f\xe6\x6d\x7f\x28\x22\x1e\x8e\x88" "\x63\xeb\xc4\xff\xc3\x8b\x8f\xbc\xb3\xf5\xf8\x77\x56\x16\xff\xd4\xa6\xce" "\xff\xe6\x13\xa5\xb3\xdf\x7f\xd3\xad\xfe\x8d\x9d\xff\x93\x8d\xd4\x70\xfe" "\xca\x46\x3e\xff\x36\xda\xc0\xed\x1c\x3b\x00\x00\x00\xf8\xbf\x48\x1b\xcf" "\xc0\x27\xe9\xc8\x72\x3a\x4d\x47\x46\x9a\xcf\xf0\x1f\x8c\x3d\x69\x6d\x76" "\x6e\xfe\x89\xe9\xd9\xf7\xce\x4f\x35\x9f\x95\x1f\x8a\x72\xda\x9a\xe9\x1a" "\x5c\x9e\x0f\x6d\xce\x7f\x0e\xb5\xe5\xc7\xd7\xe4\x4f\xe4\xf3\xc6\x9f\x97" "\x6e\x6f\xe4\x47\x26\x67\x6b\x53\xfd\x0e\x1e\x0a\x6e\x6f\x97\xfe\x9f\xf9" "\xbd\xd4\xef\xd6\x01\x3b\xce\xef\xb5\xa0\xb8\xf4\x7f\x28\x2e\xfd\x1f\x8a" "\x4b\xff\x87\xe2\xd2\xff\xa1\xb8\x3a\xf5\xff\x0f\xfb\xd0\x0e\xe0\xe6\xf3" "\xfd\x0f\xc5\xa5\xff\x43\x71\xe9\xff\x50\x5c\xfa\x3f\x14\xd2\x76\x7e\xd7" "\x2f\x71\x2b\x25\xca\xf9\x15\xb1\xd1\x77\x45\xda\xff\x36\x4b\xec\x5c\xa2" "\xcf\x1f\x4c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3d\xf2\x77" "\x00\x00\x00\xff\xff\x09\xe4\xe2\xef", 1071); syz_mount_image(0x20000140, 0x200000c0, 0x8080, 0x20000380, 0x40, 0x42f, 0x200004c0); memcpy((void*)0x200000c0, "./file0\000", 8); res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x200000c0ul, 0ul, 0ul); if (res != -1) r[0] = res; memcpy((void*)0x20000000, "./file0\000", 8); memcpy((void*)0x20000040, "user.incfs.id\000", 14); memset((void*)0x20000080, 48, 31); *(uint8_t*)0x2000009f = 0; syscall(__NR_setxattr, 0x20000000ul, 0x20000040ul, 0x20000080ul, 0x20ul, 0ul); memcpy((void*)0x20000240, "./file0\000", 8); syscall(__NR_mkdirat, r[0], 0x20000240ul, 0ul); memcpy((void*)0x20000280, ".\000", 2); res = syscall(__NR_openat, r[0], 0x20000280ul, 0ul, 0ul); if (res != -1) r[1] = res; memcpy((void*)0x200001c0, "./file0\000", 8); memcpy((void*)0x20000200, "./bus\000", 6); syscall(__NR_renameat2, r[1], 0x200001c0ul, r[1], 0x20000200ul, 0ul); } int main(void) { syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); loop(); return 0; }