// https://syzkaller.appspot.com/bug?id=c1214a07e1ab3f80fc364d02ef14efbd4f8e745e // 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 #ifndef __NR_pwritev2 #define __NR_pwritev2 328 #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)) { } memcpy((void*)0x200000c0, "exfat\000", 6); memcpy((void*)0x20000300, "\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*)0x20000540, "iocharset", 9); *(uint8_t*)0x20000549 = 0x3d; memcpy((void*)0x2000054a, "maccenteuro", 11); *(uint8_t*)0x20000555 = 0x2c; memcpy((void*)0x20000556, "umask", 5); *(uint8_t*)0x2000055b = 0x3d; sprintf((char*)0x2000055c, "%023llo", (long long)9); *(uint8_t*)0x20000573 = 0x2c; memcpy((void*)0x20000574, "dmask", 5); *(uint8_t*)0x20000579 = 0x3d; sprintf((char*)0x2000057a, "%023llo", (long long)9); *(uint8_t*)0x20000591 = 0x2c; memcpy((void*)0x20000592, "iocharset", 9); *(uint8_t*)0x2000059b = 0x3d; memcpy((void*)0x2000059c, "cp1250", 6); *(uint8_t*)0x200005a2 = 0x2c; memcpy((void*)0x200005a3, "gid", 3); *(uint8_t*)0x200005a6 = 0x3d; sprintf((char*)0x200005a7, "0x%016llx", (long long)0xee00); *(uint8_t*)0x200005b9 = 0x2c; memcpy((void*)0x200005ba, "errors=remount-ro", 17); *(uint8_t*)0x200005cb = 0x2c; memcpy((void*)0x200005cc, "errors=remount-ro", 17); *(uint8_t*)0x200005dd = 0x2c; memcpy((void*)0x200005de, "errors=remount-ro", 17); *(uint8_t*)0x200005ef = 0x2c; memcpy((void*)0x200005f0, "namecase=1", 10); *(uint8_t*)0x200005fa = 0x2c; memcpy((void*)0x200005fb, "errors=continue", 15); *(uint8_t*)0x2000060a = 0x2c; *(uint8_t*)0x2000060b = 0; memcpy( (void*)0x200037c0, "\x78\x9c\xec\xdc\x09\xb8\x4e\x55\xfb\x30\xf0\xfb\x5e\x6b\xed\xe3\x90\xf4" "\x74\x92\xe1\xb0\xd6\xba\x37\x4f\x32\x2c\x27\x49\x32\x24\xc9\x90\x24\x49" 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"\xdc\x75\x2e\xe2\xae\x77\x71\xee\x06\x97\xd7\xdd\xe8\xf2\xb9\xfc\xae\x80" "\x2b\xe8\xe2\x5d\x21\x57\xd8\x69\x67\x9c\x75\xe4\x42\x57\xc4\x15\x75\x51" "\x77\x93\x2b\xe6\x6e\x76\xc5\x5d\x09\x57\xd2\x95\x72\xce\x95\x76\x09\xae" "\x85\x6b\xe9\x5a\xba\x56\xee\x49\xd7\xda\xb5\x71\x6d\xdd\x53\xee\x29\xf7" "\xb4\x7b\xda\x3d\xe3\x9e\x71\xcf\xba\x0e\xee\x39\xd7\xd1\xfd\xcd\x75\x72" "\xcf\xbb\xce\xee\x05\xf7\x82\x7b\xd1\x75\x75\xdd\x5c\x77\xf7\x92\xeb\xe1" "\x26\xe4\xf9\xf5\x33\x99\xe4\xfa\xb8\x3e\xae\xaf\xeb\xeb\xfa\xbb\xfe\x6e" "\xa0\x1b\xe8\x06\xb9\x41\x6e\xb0\x1b\xec\x92\x5d\xb2\x1b\xea\x86\xba\x61" "\x6e\x98\x1b\xee\x86\xbb\x11\x6e\x84\x1b\xe5\x46\xb9\xd1\x6e\xb4\x1b\xe3" "\xc6\xb8\x71\x6e\x9c\x4b\x71\x29\x6e\xa2\x9b\xe8\x26\xb9\x49\x6e\xb2\x9b" "\xec\xa6\xba\xa9\x2e\xd5\xa5\xba\x19\x6e\x86\x9b\xe9\x66\xba\x2a\xb3\x7e" "\x3d\xca\x5c\x37\xd7\xcd\x77\xf3\x5d\x9a\x4b\x73\x0b\x5d\xd6\x9a\x31\xdd" "\x2d\x76\x8b\x5d\x86\xcb\x70\x4b\xdd\x52\xb7\xdc\x2d\x77\x2b\xdd\x4a\xb7" "\xda\xad\x76\x6b\xdd\x5a\xb7\xde\xad\x77\x1b\xdd\x46\xb7\xd9\x6d\x76\x5b" "\xdd\x56\xb7\xdd\x6d\x77\x3b\xdd\x4e\xb7\xdb\xed\x76\x7b\xfc\x75\xbf\x0e" "\xea\xf6\xb9\xfd\x6e\xbf\x3b\xe0\x0e\xb8\x83\xee\x6b\x97\xe9\xbe\x71\x87" "\xdc\xb7\xee\xb0\xfb\xce\x1d\x71\xdf\xbb\xa3\xee\x07\x77\xcc\x1d\x77\x27" "\xdc\x49\x77\xca\xfd\xe8\x4e\xbb\x33\xee\xac\x3b\xe7\xce\xbb\x9f\xdc\x05" "\xf7\xb3\xbb\xe8\xbc\x4b\x89\x4c\x88\x4c\x8c\xbc\x1b\x99\x14\x79\x2f\x32" "\x39\x32\x25\x32\x35\x32\x2d\x92\x1a\x99\x1e\x99\x11\x79\x3f\x32\x33\x32" "\x2b\x32\x3b\xf2\x41\x64\x4e\xe4\xc3\xc8\xdc\xc8\xbc\xc8\xfc\xc8\x82\x48" "\x5a\xe4\xa3\xc8\xc2\xc8\xa2\x48\x7a\xe4\xe3\xc8\xe2\xc8\x27\x91\x8c\xc8" "\x92\xc8\xd2\xc8\xb2\xc8\xf2\xc8\x8a\x88\xf7\x85\xb6\x86\xbe\x88\x2f\xea" "\xa3\xfe\x26\x5f\xcc\xdf\xec\x8b\xfb\x12\xbe\xa4\x2f\xe5\x9d\x2f\xed\x13" "\xfc\x2d\xbe\x8c\xbf\xd5\x97\xf5\xb7\xf9\x72\xfe\x76\x5f\xde\xdf\xe1\x2b" "\xf8\x8a\xbe\x92\x7f\xdc\x37\xf5\xcd\x7c\x73\xdf\xc2\xb7\xf4\x4f\xf8\x56" "\xfe\x49\xdf\xda\xb7\xf1\x6d\xfd\x53\xbe\x9d\x7f\xda\xb7\xf7\xcf\xf8\x44" "\xff\xac\xef\xe0\x9f\xf3\x1d\xfd\xdf\x7c\x27\xff\xbc\xef\xec\x5f\xf0\x5d" "\xfc\x8b\xbe\xab\xef\xe6\xbb\xfb\x97\x7c\x0f\xff\xb2\xef\xe9\x7b\xf9\x24" "\xdf\xdb\xf7\xf1\xaf\xf8\xbe\xbe\x9f\xef\xef\x07\xf8\x81\xfe\x55\x3f\xc8" "\xbf\xe6\x07\xfb\xd7\x7d\xb2\x1f\xe2\x87\xfa\x37\xfc\x30\xff\xa6\x1f\xee" "\xdf\xf2\x23\xfc\x48\x3f\x2a\xe6\x6d\x3f\xfa\xf2\x25\x32\x8c\xf7\x29\x7e" "\x82\x9f\xe8\xdf\xf5\x93\xfc\x7b\x7e\xb2\x9f\xe2\xa7\xfa\x69\x3e\xd5\x4f" "\xf7\x33\xfc\xfb\x7e\xa6\x9f\xe5\x67\xfb\x0f\xfc\x1c\xff\xa1\x9f\xeb\xe7" "\xf9\xf9\x7e\x81\x4f\xf3\x1f\xf9\x85\x7e\x91\x4f\xf7\x1f\xfb\xc5\xfe\x13" "\x9f\xe1\x97\x5c\xbe\xa9\xec\x57\xfa\x55\x7e\xb5\x5f\xe3\xd7\xfa\x75\x7e" "\xbd\xdf\xe0\x37\xfa\x4d\x7e\xb3\xdf\xe2\xb7\xfa\x6d\x7e\xbb\xdf\xe1\x77" "\xfa\x5d\x7e\xb7\xff\xd4\xef\xf1\x9f\xf9\xbd\xfe\x73\xbf\xcf\x7f\xe1\xf7" "\xfb\x2f\xfd\x01\xff\x95\x3f\xe8\xbf\xf6\x99\xfe\x1b\x7f\xc8\x7f\xeb\x0f" "\xfb\xef\xfc\x11\xff\xbd\x3f\xea\x7f\xf0\xc7\xfc\x71\x7f\xc2\x9f\xf4\xa7" "\xfc\x8f\xfe\xb4\x3f\xe3\xcf\xfa\x73\xfe\xbc\xff\xc9\x5f\xf0\x3f\xfb\x8b" "\xfc\x6f\xd6\x18\x63\x8c\x31\xc6\xfe\x4b\x26\x5c\x69\x8a\x3f\xea\xef\xfd" "\x07\xcf\x89\xbf\xdb\xb9\x0f\x00\x5c\xbb\xad\x60\xe6\xdf\xf7\x67\xad\x28" "\xd7\xe7\xfb\xb5\xdd\x4f\xc4\xb7\x8b\x00\xc0\xb3\xbd\xba\x3c\x72\x79\xab" "\x5e\x3d\x29\x29\xe9\xd2\xbe\x19\x12\x82\xa2\xf3\x00\x2e\xff\x49\x50\x96" "\x18\xb8\x12\x2f\x81\xb6\xf0\x34\x24\x42\x1b\x28\xf3\x87\xf3\xef\x27\xba" "\x9d\xa7\x7f\x32\x7e\xf4\x76\x80\x5c\x7f\x97\x13\x0b\x57\xe2\x2b\xe3\x7f" "\xf9\x27\xe3\x3f\xf1\xd4\xa8\x85\xe5\xc3\xb3\x71\xff\x8f\xf1\xe7\x01\x14" "\x2f\x7a\x25\x27\x27\x5c\x89\x97\x40\x5b\x95\xf5\xd8\x06\xca\xfe\xc9\xf8" "\xf9\x5b\xfd\x93\xf9\xe7\xfc\x2a\x05\xa0\xf5\xdf\xe5\xe4\x86\x2b\xf1\x95" "\xf9\x27\xc0\x93\xf0\x1c\x24\xfe\x66\x4f\xc6\x18\x63\x8c\x31\xc6\x18\x63" "\xec\x57\xfd\x44\xa5\x4e\x97\xaf\x3f\x2f\xff\x8d\xcf\x3f\xba\x3e\x8f\x57" "\x57\x72\x72\xc0\x95\xf8\x9f\x5d\x9f\x33\xc6\x18\x63\x8c\x31\xc6\x18\x63" "\xec\xea\x7b\xbe\x5b\xf7\x67\x9e\x48\x4c\x6c\xd3\xe9\x5f\x6f\x54\xfd\x6f" "\x65\x71\xe3\x7f\x6a\xc3\x7b\x80\xcb\xcf\x28\x00\xf8\x37\x07\x04\xf8\x8f" "\x9f\xc5\x96\xff\xc8\xb1\x92\x2f\x7d\x74\xfe\xb1\x6b\xf9\x39\x1f\xc0\xff" "\x8c\x52\xfe\x15\x8d\xab\xfc\xc5\xc4\x18\x63\x8c\x31\xc6\x18\xfb\xcb\x5d" "\x59\xf4\xff\xf6\x79\x75\xb5\x26\xc4\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31" "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63" "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x65\x43\xff\x89\xff\x4e\xec" "\x6a\x9f\x23\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18" "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31" "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\x76\xb5\xfd" "\x9f\x00\x00\x00\xff\xff\x81\xe6\x0e\x31", 5392); syz_mount_image(/*fs=*/0x200000c0, /*dir=*/0x20000300, /*flags=MS_NODIRATIME*/ 0x800, /*opts=*/0x20000540, /*chdir=*/5, /*size=*/0x1510, /*img=*/0x200037c0); memcpy((void*)0x20000140, "./file1\000", 8); res = syscall( __NR_open, /*file=*/0x20000140ul, /*flags=O_NONBLOCK|O_NOFOLLOW|O_NOATIME|O_DIRECT|O_CREAT|0x2*/ 0x64842ul, /*mode=S_IWOTH|S_IWGRP|S_IXUSR|0x32fae29583111e00*/ 0x32fae29583111e52ul); if (res != -1) r[0] = res; *(uint64_t*)0x20000240 = 0x20000000; memset((void*)0x20000000, 133, 1); *(uint64_t*)0x20000248 = 0x78c00; syscall(__NR_pwritev2, /*fd=*/r[0], /*vec=*/0x20000240ul, /*vlen=*/1ul, /*off_low=*/0x2000, /*off_high=*/0, /*flags=RWF_HIPRI|RWF_DSYNC*/ 3ul); memcpy((void*)0x200000c0, "./file1\000", 8); memcpy((void*)0x20000000, "./file1\000", 8); memcpy((void*)0x20000040, "erofs\000", 6); syscall(__NR_mount, /*src=*/0x200000c0ul, /*dst=*/0x20000000ul, /*type=*/0x20000040ul, /*flags=MS_RELATIME*/ 0x200000ul, /*data=*/0ul); } 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; }