// https://syzkaller.appspot.com/bug?id=052f4f1652b345365f1c524d2a09f8bd33267606 // 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 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_RDONLY); 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"); } else if (strncmp(fs, "gfs2", 4) == 0 && (strstr(opts, "errors=panic") || strstr(opts, "debug"))) { strcat(opts, ",errors=withdraw"); } 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) { if (chdir(target) == -1) { err = errno; close(res); res = -1; } } error_clear_loop: if (need_loop_device) reset_loop_device(loopname); errno = err; return res; } uint64_t r[1] = {0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // syz_mount_image$exfat arguments: [ // fs: ptr[in, buffer] { // buffer: {65 78 66 61 74 00} (length 0x6) // } // dir: ptr[in, buffer] { // buffer: {e9 1f 71 89 59 1e 92 33 61 4b 00} (length 0xb) // } // flags: mount_flags = 0x0 (8 bytes) // opts: ptr[in, fs_options[exfat_options]] { // fs_options[exfat_options] { // elems: array[fs_opt_elem[exfat_options]] { // fs_opt_elem[exfat_options] { // elem: union exfat_options { // dmask: fs_opt["dmask", fmt[oct, int32]] { // name: buffer: {64 6d 61 73 6b} (length 0x5) // eq: const = 0x3d (1 bytes) // val: int32 = 0x2263 (23 bytes) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // utf8: buffer: {75 74 66 38} (length 0x4) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // uid: fs_opt["uid", fmt[hex, uid]] { // name: buffer: {75 69 64} (length 0x3) // eq: const = 0x3d (1 bytes) // val: uid (resource) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // iocharset: fs_opt["iocharset", stringnoz[codepages_names]] { // name: buffer: {69 6f 63 68 61 72 73 65 74} (length 0x9) // eq: const = 0x3d (1 bytes) // val: buffer: {6d 61 63 63 65 6e 74 65 75 72 6f} (length 0xb) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // umask: fs_opt["umask", fmt[oct, int32]] { // name: buffer: {75 6d 61 73 6b} (length 0x5) // eq: const = 0x3d (1 bytes) // val: int32 = 0x4 (23 bytes) // } // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // namecase: buffer: {6e 61 6d 65 63 61 73 65 3d 31} (length 0xa) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // utf8: buffer: {75 74 66 38} (length 0x4) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // discard: buffer: {64 69 73 63 61 72 64} (length 0x7) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // errors_remount: buffer: {65 72 72 6f 72 73 3d 72 65 6d 6f 75 // 6e 74 2d 72 6f} (length 0x11) // } // comma: const = 0x2c (1 bytes) // } // fs_opt_elem[exfat_options] { // elem: union exfat_options { // uid: fs_opt["uid", fmt[hex, uid]] { // name: buffer: {75 69 64} (length 0x3) // eq: const = 0x3d (1 bytes) // val: uid (resource) // } // } // comma: const = 0x2c (1 bytes) // } // } // common: array[fs_opt_elem[fs_options_common]] { // } // null: const = 0x0 (1 bytes) // } // } // chdir: int8 = 0x1 (1 bytes) // size: len = 0x1533 (8 bytes) // img: ptr[in, buffer] { // buffer: (compressed buffer with length 0x1533) // } // ] // returns fd_dir memcpy((void*)0x200000000040, "exfat\000", 6); memcpy((void*)0x200000000080, "\351\037q\211Y\036\2223aK\000", 11); memcpy((void*)0x2000000000c0, "dmask", 5); *(uint8_t*)0x2000000000c5 = 0x3d; sprintf((char*)0x2000000000c6, "%023llo", (long long)0x2263); *(uint8_t*)0x2000000000dd = 0x2c; memcpy((void*)0x2000000000de, "utf8", 4); *(uint8_t*)0x2000000000e2 = 0x2c; memcpy((void*)0x2000000000e3, "uid", 3); *(uint8_t*)0x2000000000e6 = 0x3d; sprintf((char*)0x2000000000e7, "0x%016llx", (long long)0xee00); *(uint8_t*)0x2000000000f9 = 0x2c; memcpy((void*)0x2000000000fa, "iocharset", 9); *(uint8_t*)0x200000000103 = 0x3d; memcpy((void*)0x200000000104, "maccenteuro", 11); *(uint8_t*)0x20000000010f = 0x2c; memcpy((void*)0x200000000110, "umask", 5); *(uint8_t*)0x200000000115 = 0x3d; sprintf((char*)0x200000000116, "%023llo", (long long)4); *(uint8_t*)0x20000000012d = 0x2c; memcpy((void*)0x20000000012e, "namecase=1", 10); *(uint8_t*)0x200000000138 = 0x2c; memcpy((void*)0x200000000139, "utf8", 4); *(uint8_t*)0x20000000013d = 0x2c; memcpy((void*)0x20000000013e, "discard", 7); *(uint8_t*)0x200000000145 = 0x2c; memcpy((void*)0x200000000146, "errors=remount-ro", 17); *(uint8_t*)0x200000000157 = 0x2c; memcpy((void*)0x200000000158, "uid", 3); *(uint8_t*)0x20000000015b = 0x3d; sprintf((char*)0x20000000015c, "0x%016llx", (long long)0); *(uint8_t*)0x20000000016e = 0x2c; *(uint8_t*)0x20000000016f = 0; memcpy( (void*)0x200000000400, "\x78\x9c\xec\xdc\x0b\x9c\x4e\xd5\xfa\x38\xf0\xe7\x59\x6b\xed\x31\x24\xbd" "\x4d\x72\x19\xd6\x5a\xcf\xe6\x4d\x2e\x8b\x24\xc9\x25\x49\x2e\x49\x92\x24" "\x49\x6e\x09\x49\x92\x23\x09\x89\x21\xb7\xa4\x21\x09\xc9\x65\x48\x2e\x43" 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"\x74\x57\xbb\x5c\xee\x1a\x17\x71\xd7\xba\x38\x77\x9d\xcb\xed\xae\x77\x79" "\x5c\x5e\x97\xcf\xe5\x77\xf1\xae\x80\x2b\xe8\xb4\x33\xce\x3a\x72\xa1\x2b" "\xe4\x0a\xbb\xa8\xbb\xc1\x15\x71\x37\xba\xa2\xae\x98\x2b\xee\x4a\x38\xe7" "\x4a\xba\x52\xae\xb9\x6b\xe1\x5a\xb8\x96\xee\x71\xd7\xca\xb5\x76\x6d\xdc" "\x13\xee\x09\xf7\xa4\x7b\xd2\x3d\xe5\x9e\x72\x4f\xbb\x0e\xee\x19\xd7\xd1" "\xfd\xcd\x75\x72\xcf\xba\xce\xee\x39\xf7\x9c\x7b\xde\x75\x75\xdd\x5c\x77" "\xf7\x82\xeb\xe1\x26\xe4\xba\xf8\x9a\x4c\x70\x7d\x5c\x1f\xd7\xd7\xf5\x75" "\xfd\x5d\x7f\x37\xd0\x0d\x74\x83\xdc\x20\x37\xd8\x0d\x76\x89\x2e\xd1\x0d" "\x75\x43\xdd\x30\x37\xcc\x0d\x77\xc3\xdd\x08\x37\xc2\x8d\x72\xa3\xdc\x68" "\x37\xda\x8d\x71\x63\xdc\x38\x37\xce\x25\xb9\x24\x37\xd1\x4d\x74\x93\xdc" "\x24\x37\xd9\x4d\x76\x53\xdd\x54\x97\xec\x92\xdd\x0c\x37\xc3\xcd\x74\x33" "\x5d\xe5\x59\x17\xb7\x32\xd7\xcd\x75\xf3\xdd\x7c\x97\xe2\x52\xdc\x42\x97" "\x71\xce\x98\xea\x16\xbb\xc5\x2e\xcd\xa5\xb9\xa5\x6e\xa9\x5b\xee\x96\xbb" "\x95\x6e\xa5\x5b\xed\x56\xbb\xb5\x6e\xad\x5b\xef\xd6\xbb\x8d\x6e\xa3\xdb" "\xec\x36\xbb\xad\x6e\xab\xdb\xee\xb6\xbb\x9d\x6e\xa7\xdb\xe5\x76\xb9\xdd" "\xfe\x9a\x8b\x8b\xba\x7d\x6e\xbf\xdb\xef\x0e\xb8\x03\xee\xa0\xfb\xd2\xa5" "\xbb\xaf\xdc\x21\xf7\xb5\x3b\xec\xbe\x71\x47\xdc\xb7\xee\xa8\xfb\xce\x1d" "\x73\xc7\xdd\x09\xf7\xbd\x3b\xe9\x7e\x70\xa7\xdc\x69\x77\xc6\x9d\x75\xe7" "\xdc\x8f\xee\xbc\xfb\xc9\x5d\x70\xde\x25\x45\x26\x44\x26\x46\xde\x8e\x4c" "\x8a\xbc\x13\x99\x1c\x99\x12\x99\x1a\x99\x16\x49\x8e\x4c\x8f\xcc\x88\xbc" "\x1b\x99\x19\x99\x15\x99\x1d\x79\x2f\x32\x27\xf2\x7e\x64\x6e\x64\x5e\x64" "\x7e\x64\x41\x24\x25\xf2\x41\x64\x61\x64\x51\x24\x35\xf2\x61\x64\x71\xe4" "\xa3\x48\x5a\x64\x49\x64\x69\x64\x59\x64\x79\x64\x45\xc4\xfb\x02\x5b\x43" "\x5f\xc8\x17\xf6\x51\x7f\x83\x2f\xe2\x6f\xf4\x45\x7d\x31\x5f\xdc\x97\xf0" "\xce\x97\xf4\xa5\xfc\x4d\xbe\xf4\xc5\xba\xd3\xbc\xbf\xd5\x97\xf3\xb7\xf9" "\xf2\xbe\x82\xaf\xe8\x1f\xf5\x4d\x7c\x53\xdf\xcc\x37\xf7\x2d\xfc\x63\xbe" "\xa5\x7f\xdc\xb7\xf2\xad\x7d\x1b\xff\x84\x6f\xeb\x9f\xf4\xed\xfc\x53\xbe" "\xbd\x7f\xda\x77\xf0\xcf\xf8\x8e\xfe\x6f\xbe\x93\x7f\xd6\x77\xf6\xcf\xf9" "\x2e\xfe\x79\xdf\xd5\x77\xf3\xdd\xfd\x0b\xbe\x87\x7f\xd1\xf7\xf4\xbd\x7c" "\x82\xef\xed\xfb\xf8\x97\x7c\x5f\xdf\xcf\xf7\xf7\x03\xfc\x40\xff\xb2\x1f" "\xe4\x5f\xf1\x83\xfd\xab\x3e\xd1\x0f\xf1\x43\xfd\x6b\x7e\x98\x7f\xdd\x0f" "\xf7\x6f\xf8\x11\x7e\xa4\x1f\x15\xf3\xa6\x1f\x9d\x79\x89\x0c\xe3\x7d\x92" "\x9f\xe0\x27\xfa\xb7\xfd\x24\xff\x8e\x9f\xec\xa7\xf8\xa9\x7e\x9a\x4f\xf6" "\xd3\xfd\x0c\xff\xae\x9f\xe9\x67\xf9\xd9\xfe\x3d\x3f\xc7\xbf\xef\xe7\xfa" "\x79\x7e\xbe\x5f\xe0\x53\xfc\x07\x7e\xa1\x5f\xe4\x53\xfd\x87\x7e\xb1\xff" "\xc8\xa7\xf9\x25\x99\x37\x8d\xfd\x4a\xbf\xca\xaf\xf6\x6b\xfc\x5a\xbf\xce" "\xaf\xf7\x1b\xfc\x46\xbf\xc9\x6f\xf6\x5b\xfc\x56\xbf\xcd\x6f\xf7\x3b\xfc" "\x4e\xff\xb1\xdf\xe5\x3f\xf1\xbb\xfd\x1e\xbf\xd7\x7f\xea\xf7\xf9\xcf\xfc" "\x7e\xff\xb9\x3f\xe0\xbf\xf0\x07\xfd\x97\x3e\xdd\x7f\xe5\x0f\xf9\xaf\xfd" "\x61\xff\x8d\x3f\xe2\xbf\xf5\x47\xfd\x77\xfe\x98\x3f\xee\x4f\xf8\xef\xfd" "\x49\xff\x83\x3f\xe5\x4f\xfb\x33\xfe\xac\x3f\xe7\x7f\xf4\xe7\xfd\x4f\xfe" "\x02\xff\x9b\x35\xc6\x18\x63\x8c\xb1\x7f\xc9\x84\xcb\x43\xf1\xeb\x99\x8b" "\xb7\xf3\x7b\xff\x4e\x8e\xf8\xc5\x93\xfb\x00\xc0\xd5\xdb\xf2\xa7\xff\x72" "\x3e\xe3\x8c\x72\x7d\x9e\x8b\xe3\x7e\x22\x3e\x36\xe3\xeb\xd3\xbd\xba\x3c" "\x94\xf9\xa8\x56\x2d\x21\x21\xe1\xd2\x73\xd3\x24\x04\x85\xe7\x01\x64\xfe" "\x25\x28\xc3\xcf\x1f\x3d\xb8\x14\x2f\x81\x36\xf0\x24\xb4\x87\xd6\x50\xfa" "\x77\xeb\xef\x27\xba\x9d\xa3\x7f\xb2\x7e\xf4\x56\x80\x1c\xbf\xc8\xc9\x28" "\x28\x33\xbe\xbc\xfe\xe7\x00\x98\xf0\x3b\xeb\x3f\xf6\xc4\xa8\x85\xe5\xc2" "\x33\x71\xff\x8f\xf5\xe7\x01\x14\x2d\x7c\x39\x27\x3b\x5c\x8e\x97\x40\x9b" "\x9f\xef\xaf\xb4\x86\x32\xff\xa0\xfe\xbc\x2d\xff\x49\xfd\xd9\xbf\x48\x02" "\x68\xf5\x8b\x9c\x9c\x70\x39\xbe\x5c\x7f\x29\x78\x1c\x9e\x81\xf6\xbf\x7a" "\x26\x63\x8c\x31\xc6\x18\x63\x8c\x31\x76\x51\x3f\x51\xb1\x53\xe6\xf5\x67" "\xe6\x27\x3e\x7f\xef\xfa\x3c\x5e\x5d\xce\xc9\x06\x97\xe3\x7f\x76\x7d\xce" "\x18\x63\x8c\x31\xc6\x18\x63\x8c\xb1\x2b\xef\xd9\x6e\xdd\x9f\x7a\xac\x7d" "\xfb\xd6\x9d\xfe\xfd\x41\x95\xff\x51\xd6\xbf\x3c\x68\x0c\xff\xa9\x95\x79" "\xf0\xbb\x03\xef\x01\x32\xbf\xa3\x00\xe0\x0f\x2e\x08\x90\x31\x90\x7f\xe5" "\x5e\x6c\xf9\x4b\xb6\x95\x78\xe9\xa5\xf3\xf7\x53\xcb\xcf\xfa\x00\xfe\x77" "\xb4\xf2\xcf\x18\x5c\xe1\x03\x13\x63\x8c\x31\xc6\x18\x63\xec\x4f\x77\xf9" "\xa4\xff\xd7\xdf\x57\x57\xaa\x20\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\x2c\x0b\xfa\x2b\xfe\x3b\xb1\x2b" "\xbd\x8f\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\xc6\xd8\x95\xf6\x7f" "\x02\x00\x00\xff\xff\xb5\xb5\xfb\x08", 5427); syz_mount_image(/*fs=*/0x200000000040, /*dir=*/0x200000000080, /*flags=*/0, /*opts=*/0x2000000000c0, /*chdir=*/1, /*size=*/0x1533, /*img=*/0x200000000400); // openat$fuse arguments: [ // fd: const = 0xffffffffffffff9c (8 bytes) // file: nil // flags: const = 0x42 (4 bytes) // mode: const = 0x0 (2 bytes) // ] // returns fd_fuse syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0ul, /*flags=*/0x42, /*mode=*/0); // mknod$loop arguments: [ // file: nil // mode: mknod_mode = 0x0 (8 bytes) // dev: proc = 0x1 (4 bytes) // ] syscall(__NR_mknod, /*file=*/0ul, /*mode=*/0ul, /*dev=*/0x701); // mkdir arguments: [ // path: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 00} (length 0x9) // } // mode: open_mode = 0x1ff (8 bytes) // ] memcpy((void*)0x200000000180, "./config\000", 9); syscall( __NR_mkdir, /*path=*/0x200000000180ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); // mount arguments: [ // src: nil // dst: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 00} (length 0x9) // } // type: ptr[in, buffer] { // buffer: {63 6f 6e 66 69 67 66 73 00} (length 0x9) // } // flags: mount_flags = 0x0 (8 bytes) // data: nil // ] memcpy((void*)0x2000000001c0, "./config\000", 9); memcpy((void*)0x200000000200, "configfs\000", 9); syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x2000000001c0ul, /*type=*/0x200000000200ul, /*flags=*/0ul, /*data=*/0ul); // mkdir arguments: [ // path: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 2f 75 73 62 5f 67 61 64 67 65 74 2f // 67 31 00} (length 0x17) // } // mode: open_mode = 0x1ff (8 bytes) // ] memcpy((void*)0x200000000240, "./config/usb_gadget/g1\000", 23); syscall( __NR_mkdir, /*path=*/0x200000000240ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); // mkdir arguments: [ // path: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 2f 75 73 62 5f 67 61 64 67 65 74 2f // 67 31 2f 66 75 6e 63 74 69 6f 6e 73 2f 6d 61 73 73 5f 73 74 6f 72 61 // 67 65 2e 30 00} (length 0x30) // } // mode: open_mode = 0x1ff (8 bytes) // ] memcpy((void*)0x2000000002c0, "./config/usb_gadget/g1/functions/mass_storage.0\000", 48); syscall( __NR_mkdir, /*path=*/0x2000000002c0ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); // openat arguments: [ // fd: fd_dir (resource) // file: ptr[in, buffer] { // buffer: {2e 2f 63 6f 6e 66 69 67 2f 75 73 62 5f 67 61 64 67 65 74 2f // 67 31 2f 66 75 6e 63 74 69 6f 6e 73 2f 6d 61 73 73 5f 73 74 6f 72 61 // 67 65 2e 30 2f 6c 75 6e 2e 30 2f 66 69 6c 65 00} (length 0x3b) // } // flags: open_flags = 0x2 (4 bytes) // mode: open_mode = 0x0 (2 bytes) // ] // returns fd memcpy((void*)0x200000000380, "./config/usb_gadget/g1/functions/mass_storage.0/lun.0/file\000", 59); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000380ul, /*flags=O_RDWR*/ 2, /*mode=*/0); if (res != -1) r[0] = res; // write arguments: [ // fd: fd (resource) // buf: ptr[in, buffer] { // buffer: {66 69 6c 65 30} (length 0x5) // } // count: len = 0x5 (8 bytes) // ] memcpy((void*)0x2000000003c0, "file0", 5); syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x2000000003c0ul, /*count=*/5ul); return 0; }