// https://syzkaller.appspot.com/bug?id=ff9fe3de46d66c92f26a627abe9e85d0518c9890 // 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 #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif #ifndef __NR_renameat2 #define __NR_renameat2 316 #endif static unsigned long long procid; //% 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; } uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; 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); intptr_t res = 0; memcpy((void*)0x20000600, "hfsplus\000", 8); memcpy((void*)0x20000640, "./file0\000", 8); memcpy((void*)0x20000040, "\x70\x61\x72\x74\x3d\x30\x78\x30\x30\x30\x30\x00\x00\x00\x80\x30\x30" "\x30\x30\x30\x30\x30\x37\x2c\x6e\x6c\x73\x3d\x63\x70\x38\x36\x5d\xe5" "\x60\x33\x2c\x64\x65\x63\x6f\x6d\x70\x6f\x73\x65\x2c\x6e\x6f\x64\x65" "\x63\x6f\x6d\x70\x6f\x73", 57); memcpy( (void*)0x20000c80, "\x78\x9c\xec\xdd\xbd\x6f\x1b\xe7\x1d\x07\xf0\xef\xd1\x94\x6c\xb9\x80\xad" "\x24\x76\xe2\x14\x01\x2a\xc4\x40\x5a\x44\xa8\xad\x17\x28\xad\xba\xd4\x2d" "\x8a\x42\x43\x50\x04\xe9\xd0\x59\xb0\xe9\x98\x30\xad\x04\x12\x53\x28\x41" "\x51\xb8\xef\x6b\x87\xfc\x01\xe9\xa0\xad\x53\x81\xee\x06\xd2\xb9\x63\x56" 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"\xe3\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x9e\x80\xef\xec\x66\x37\xdb\x39" "\x37\xe8\xef\x15\xd5\xdf\xfc\xdf\xac\x3a\x17\xaa\xc7\x6f\xe5\xe3\x6c\xa5" "\x95\xcd\x5c\xc9\x76\xd6\xd3\x4d\x37\x9b\x59\x4c\x32\x3b\x34\xd1\xf4\xf6" "\x7a\xb7\xbb\xb9\x38\xc2\x9a\x4b\x47\xae\xb9\xf4\x6c\xf6\x17\x00\x00\x00" "\x00\x00\x00\x00\xfe\x4f\xfd\x3e\x6b\x07\x7f\xff\x07\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x80\x31\x7b\xfb\x74\x92\x22\x39\xd5\xaf\xaa\x72\x61" "\xd0\x9e\x4d\xa3\x99\xe4\x4c\x92\xe9\x14\xcd\xc1\x3a\xd3\xe3\x0d\xf9\xf1" "\xdd\x1b\x77\x00\x00\x00\x00\xf0\x0c\x9c\xdf\xcd\x6e\xb6\x73\x6e\xd0\xdf" "\x2b\xaa\x7b\xfe\x57\xab\xfb\xfe\x33\xf9\x38\x1b\xe9\xa6\x9d\x6e\x3a\x69" "\xe5\x46\xf5\x5d\x40\xff\xae\xbf\xd1\xdb\x59\xee\xf4\x76\x96\xef\x94\xe5" "\xf0\xbc\x3f\xf9\xef\x89\xc2\xa8\x66\x4c\xff\xbb\x87\xa3\xb7\x7c\xa9\x5a" 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"\xba\x9e\x0c\x65\x5e\x5f\x1a\xca\xeb\xf0\x35\x77\xb6\x1a\x1b\x7e\xe6\x20" "\x4b\x2f\x3f\xf9\x6b\x63\xf3\xdb\x75\xa3\xdc\xc6\x1f\xea\x7a\x32\x7c\x33" "\x13\x8b\x43\x99\x78\xe5\xf8\x4c\xfc\x6d\xaf\x7c\xdc\xea\x6c\xdc\xde\xbc" "\xb5\xfe\xd1\x88\xdb\x7b\xab\xae\xcb\xf3\xe8\x4f\x13\xf5\x2e\x51\xbe\x5e" "\x5e\x2e\x0f\x56\xd5\xbb\xff\xd5\x51\x8e\xbd\x72\xe4\xd8\x62\x35\x76\x61" "\x7f\xac\x71\x68\xec\xe2\xfe\xd8\xc3\xce\xd4\xe9\xfa\x33\xdc\xe1\x99\x96" "\xaa\xb1\xd7\x8e\x1c\x5b\xae\xc6\x2e\x0d\x8d\x1d\xf5\x79\x0b\x80\x89\x77" "\xf6\xed\xb3\xd3\x33\xff\x99\xf9\xf7\xcc\xe7\x33\x7f\x9c\xb9\x35\xf3\xee" "\x99\x9f\x9e\xfe\xe1\xe9\x37\xa6\x33\xf5\xaf\xa9\x1f\x35\x17\x4e\xbd\xd5" "\x78\xa3\xf8\x47\x3e\xcf\x6f\x0f\xee\xff\x01\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x47\xb7" "\xf5\xc9\xa7\xb7\xd7\x3b\x9d\xd6\xe6\x98\x1b\x45\xfd\x43\x3e\x93\x12\x8f" "\x86\xc6\x8b\xdd\x18\xf7\x95\x09\x78\xda\xae\x76\xef\x7c\x74\x75\xeb\x93" "\x4f\xbf\xdf\xbe\xb3\xfe\x41\xeb\x83\xd6\xc6\xd4\xca\xca\xea\xc2\xea\xca" "\x3b\xcb\x57\x6f\xb6\x3b\xad\x85\xfe\xe3\xb8\xa3\x04\x9e\x86\x83\x37\xfd" "\x71\x47\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x8c\xea\x59\xfc\x77\x82" "\x71\xef\x23\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\xf0\x7c\x5b\x9b\x4f\xf3\x5e\x8a\x2c\x2e\x5c\x59" "\x28\xfb\xbd\x9d\xe5\x4e\x59\x06\xed\x83\x25\x9b\x49\x1a\x49\x8a\xdf\x24" "\xc5\x17\xc9\xb5\xf4\x4b\x66\x87\xa6\x2b\x1e\xb4\x9d\xcf\xda\xab\xef\x7f" "\xf9\x75\xef\xab\x83\xb9\x9a\x83\xe5\x1b\xc7\xad\x37\x9a\xbb\x75\xc9\x5c" "\x92\x53\x75\xfd\xa4\xe6\xbb\xfe\xd8\xf3\x15\xfb\x7b\x58\x26\xec\xf2\x20" "\x71\x30\x6e\xff\x0b\x00\x00\xff\xff\xa7\xc5\x05\x75", 1525); syz_mount_image(/*fs=*/0x20000600, /*dir=*/0x20000640, /*flags=MS_I_VERSION|MS_SYNCHRONOUS|MS_RELATIME*/ 0xa00010, /*opts=*/0x20000040, /*chdir=*/4, /*size=*/0x5f5, /*img=*/0x20000c80); memcpy((void*)0x20000000, ".\000", 2); res = syscall(__NR_open, /*file=*/0x20000000ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[0] = res; memcpy((void*)0x20000200, "\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$" "\242\363\327r\347cnH\263<\277p\203r\350\361\271\223>" "\305\022wC\276\"\006 \236\360-\371\313\362\366\350\200\3238/\000", 78); syscall(__NR_mkdirat, /*fd=*/r[0], /*path=*/0x20000200ul, /*mode=*/0ul); memcpy((void*)0x20000140, "./file1\000", 8); syscall(__NR_creat, /*file=*/0x20000140ul, /*mode=S_IROTH|S_IWGRP|S_IXUSR|S_IWUSR*/ 0xd4ul); memcpy((void*)0x20000000, ".\000", 2); res = syscall(__NR_open, /*file=*/0x20000000ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[1] = res; memcpy((void*)0x20000040, "\023\023w\305\3745\324\024T\325\324\035)\255\032`)" "Y\201F\346\276\026nA\255\r\275@T\003<\2373\273\332\202$" "\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); memcpy((void*)0x200000c0, "./file0\000", 8); syscall(__NR_symlinkat, /*old=*/0x20000040ul, /*newfd=*/r[1], /*new=*/0x200000c0ul); memcpy((void*)0x20000000, ".\000", 2); res = syscall(__NR_open, /*file=*/0x20000000ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[2] = res; memcpy((void*)0x20000100, "./file0/file0\000", 14); syscall(__NR_openat, /*fd=*/r[1], /*file=*/0x20000100ul, /*flags=O_CREAT*/ 0x40ul, /*mode=*/0ul); memcpy((void*)0x200001c0, "./file0\000", 8); memcpy((void*)0x200002c0, "./file0/file0\000", 14); syscall(__NR_renameat2, /*oldfd=*/r[2], /*old=*/0x200001c0ul, /*newfd=*/r[2], /*new=*/0x200002c0ul, /*flags=*/0ul); return 0; }