// https://syzkaller.appspot.com/bug?id=68414d97aff516b2ada6f66a36b4ecca7339a066 // 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_io_uring_setup #define __NR_io_uring_setup 425 #endif #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif static unsigned long long procid; #define SIZEOF_IO_URING_SQE 64 #define SIZEOF_IO_URING_CQE 16 #define SQ_HEAD_OFFSET 0 #define SQ_TAIL_OFFSET 64 #define SQ_RING_MASK_OFFSET 256 #define SQ_RING_ENTRIES_OFFSET 264 #define SQ_FLAGS_OFFSET 276 #define SQ_DROPPED_OFFSET 272 #define CQ_HEAD_OFFSET 128 #define CQ_TAIL_OFFSET 192 #define CQ_RING_MASK_OFFSET 260 #define CQ_RING_ENTRIES_OFFSET 268 #define CQ_RING_OVERFLOW_OFFSET 284 #define CQ_FLAGS_OFFSET 280 #define CQ_CQES_OFFSET 320 struct io_sqring_offsets { uint32_t head; uint32_t tail; uint32_t ring_mask; uint32_t ring_entries; uint32_t flags; uint32_t dropped; uint32_t array; uint32_t resv1; uint64_t resv2; }; struct io_cqring_offsets { uint32_t head; uint32_t tail; uint32_t ring_mask; uint32_t ring_entries; uint32_t overflow; uint32_t cqes; uint64_t resv[2]; }; struct io_uring_params { uint32_t sq_entries; uint32_t cq_entries; uint32_t flags; uint32_t sq_thread_cpu; uint32_t sq_thread_idle; uint32_t features; uint32_t resv[4]; struct io_sqring_offsets sq_off; struct io_cqring_offsets cq_off; }; #define IORING_OFF_SQ_RING 0 #define IORING_OFF_SQES 0x10000000ULL #define IORING_SETUP_SQE128 (1U << 10) #define IORING_SETUP_CQE32 (1U << 11) static long syz_io_uring_setup(volatile long a0, volatile long a1, volatile long a2, volatile long a3) { uint32_t entries = (uint32_t)a0; struct io_uring_params* setup_params = (struct io_uring_params*)a1; void** ring_ptr_out = (void**)a2; void** sqes_ptr_out = (void**)a3; setup_params->flags &= ~(IORING_SETUP_CQE32 | IORING_SETUP_SQE128); uint32_t fd_io_uring = syscall(__NR_io_uring_setup, entries, setup_params); uint32_t sq_ring_sz = setup_params->sq_off.array + setup_params->sq_entries * sizeof(uint32_t); uint32_t cq_ring_sz = setup_params->cq_off.cqes + setup_params->cq_entries * SIZEOF_IO_URING_CQE; uint32_t ring_sz = sq_ring_sz > cq_ring_sz ? sq_ring_sz : cq_ring_sz; *ring_ptr_out = mmap(0, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd_io_uring, IORING_OFF_SQ_RING); uint32_t sqes_sz = setup_params->sq_entries * SIZEOF_IO_URING_SQE; *sqes_ptr_out = mmap(0, sqes_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE, fd_io_uring, IORING_OFF_SQES); uint32_t* array = (uint32_t*)((uintptr_t)*ring_ptr_out + setup_params->sq_off.array); for (uint32_t index = 0; index < entries; index++) array[index] = index; return fd_io_uring; } //% 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[2] = {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); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x20000040, "ext4\000", 5); memcpy((void*)0x20000140, "./file1\000", 8); memcpy((void*)0x200005c0, "noblock_validity", 16); *(uint8_t*)0x200005d0 = 0x2c; memcpy((void*)0x200005d1, "bsddf", 5); *(uint8_t*)0x200005d6 = 0x2c; memcpy((void*)0x200005d7, "sysvgroups", 10); *(uint8_t*)0x200005e1 = 0x2c; memcpy((void*)0x200005e2, "norecovery", 10); *(uint8_t*)0x200005ec = 0x2c; memcpy((void*)0x200005ed, "debug_want_extra_isize", 22); *(uint8_t*)0x20000603 = 0x3d; sprintf((char*)0x20000604, "0x%016llx", (long long)0x80); *(uint8_t*)0x20000616 = 0x2c; memcpy((void*)0x20000617, "orlov", 5); *(uint8_t*)0x2000061c = 0x2c; memcpy((void*)0x2000061d, "debug", 5); *(uint8_t*)0x20000622 = 0x2c; memcpy((void*)0x20000623, "noauto_da_alloc", 15); *(uint8_t*)0x20000632 = 0x2c; memcpy((void*)0x20000633, "nomblk_io_submit", 16); *(uint8_t*)0x20000643 = 0x2c; *(uint8_t*)0x20000644 = 0; memcpy( (void*)0x20000680, "\x78\x9c\xec\xdd\x5d\x6b\x1c\x55\x18\x00\xe0\x77\x36\x49\xbf\xb5\x29\x94" "\xa2\x22\x12\xe8\x85\x95\xda\x4d\x93\xf8\x51\x41\xb0\x5e\x8a\x16\x0b\x7a" "\x5f\x97\x64\x1a\x6a\x36\xdd\x92\xdd\x94\x26\x16\xda\x5e\xd8\x1b\x6f\xa4" "\x08\x22\x16\xc4\x1f\xe0\xbd\x97\xc5\x3f\xe0\xaf\x28\x68\xa1\x48\x09\x7a" "\xe1\x4d\x64\x36\xb3\xed\x36\xd9\xcd\xe7\x6a\xb6\xce\xf3\xc0\xb4\xe7\xcc" "\xcc\xe6\xcc\xd9\x33\xef\xd9\x77\x76\x76\xd9\x00\x0a\x6b\x24\xfb\xa7\x14" "\xf1\x62\xdc\x8c\xaf\x93\x88\xc3\x6d\xdb\x06\x23\xdf\x38\xb2\xb2\xdf\xd2" "\xa3\xeb\x93\xd9\x92\xc4\xf2\xf2\x27\x7f\x24\x91\xe4\xeb\x5a\xfb\x27\xf9" "\xff\x07\xf3\xca\x0b\x11\xf1\xcb\x97\x11\x27\x4b\x6b\xdb\xad\x2f\x2c\xce" "\x54\xaa\xd5\x74\x2e\xaf\x8f\x36\x66\xaf\x8c\xd6\x17\x16\x4f\x5d\x9a\xad" "\x4c\xa7\xd3\xe9\xe5\xf1\x89\x89\x33\x6f\x4e\x8c\xbf\xf3\xf6\x5b\x3d\xeb" "\xeb\x6b\xe7\xff\xfa\xee\xe3\x7b\x1f\x9c\xf9\xea\xf8\xd2\xb7\x3f\x3d\x38" "\x72\x27\x89\xb3\x71\x28\xdf\xd6\xde\x8f\x1d\xb8\xd9\x5e\x19\x89\x91\xfc" "\x39\x19\x8a\xb3\xab\x76\x1c\xeb\x41\x63\xfd\x24\xd9\xed\x03\x60\x5b\x06" "\xf2\x38\x1f\x8a\x6c\x0e\x38\x1c\x03\x79\xd4\x03\xff\x7f\x37\x22\x62\x19" "\x28\xa8\x44\xfc\x43\x41\xb5\xf2\x80\xd6\xb5\x7d\x8f\xae\x83\x9f\x19\x0f" "\xdf\x5f\xb9\x00\x5a\xdb\xff\xc1\x95\xf7\x46\x62\x5f\xf3\xda\xe8\xc0\x52" "\xf2\xd4\x95\x51\x76\xbd\x3b\xdc\x83\xf6\xb3\x36\x7e\xfe\xfd\xee\x9d\x6c" "\x89\x0d\xde\x87\xb8\xd1\x83\xf6\x00\x5a\x6e\xde\x8a\x88\xd3\x83\x83\x6b" "\xe7\xbf\x24\x9f\xff\xb6\xef\x74\xf3\xcd\xe3\xf5\xad\x6e\xa3\x68\xaf\x3f" "\xb0\x9b\xee\x65\xf9\xcf\xeb\x9d\xf2\x9f\xd2\xe3\xfc\x27\x3a\xe4\x3f\x07" "\x3b\xc4\xee\x76\x6c\x1c\xff\xa5\x07\x3d\x68\xa6\xab\x2c\xff\x7b\xb7\x63" "\xfe\xfb\x78\xea\x1a\x1e\xc8\x6b\xcf\x35\x73\xbe\xa1\xe4\xe2\xa5\x6a\x7a" "\x3a\x22\x9e\x8f\x88\x13\x31\xb4\x37\xab\xaf\x77\x3f\xe7\xcc\xd2\xfd\xe5" "\x6e\xdb\xda\xf3\xbf\x6c\xc9\xda\x6f\xe5\x82\xf9\x71\x3c\x18\xdc\xfb\xf4" "\x63\xa6\x2a\x8d\xca\x4e\xfa\xdc\xee\xe1\xad\x88\x97\x9e\xe4\xbf\x49\xac" "\x99\xff\xf7\x35\x73\xdd\xd5\xe3\x9f\x3d\x1f\xe7\x37\xd9\xc6\xb1\xf4\xee" "\x2b\xdd\xb6\x6d\xdc\xff\x76\xbd\xcf\x80\x97\x7f\x8c\x78\xb5\xe3\xf8\x3f" "\xb9\xa3\x95\xac\x7f\x7f\x72\xb4\x79\x3e\x8c\xb6\xce\x8a\xb5\xfe\xbc\x7d" "\xec\xd7\x6e\xed\x6f\xad\xff\xbd\x97\x8d\xff\x81\xf5\xfb\x3f\x9c\xb4\xdf" "\xaf\xad\x6f\xbd\x8d\x1f\xf6\xfd\x9d\x76\xdb\xb6\xdd\xf3\x7f\x4f\xf2\x69" "\xb3\xbc\x27\x5f\x77\xad\xd2\x68\xcc\x8d\x45\xec\x49\x3e\x5a\xbb\x7e\xfc" "\xc9\x63\x5b\xf5\xd6\xfe\x59\xff\x4f\x1c\x5f\x7f\xfe\xeb\x74\xfe\xef\x8f" "\x88\xcf\x36\xd9\xff\xdb\x47\x6f\x77\xdd\xb5\x1f\xc6\x7f\x6a\x4b\xe3\xbf" "\xf5\xc2\xfd\x0f\xbf\xf8\xbe\x5b\xfb\x9b\x1b\xff\x37\x9a\xa5\x13\xf9\x9a" "\xcd\xcc\x7f\x9b\x3d\xc0\x9d\x3c\x77\x00\x00\x00\x00\x00\x00\xd0\x6f\x4a" "\x11\x71\x28\x92\x52\xf9\x71\xb9\x54\x2a\x97\x57\x3e\xdf\x71\x34\x0e\x94" "\xaa\xb5\x7a\xe3\xe4\xc5\xda\xfc\xe5\xa9\x68\x7e\x57\x76\x38\x86\x4a\xad" "\x3b\xdd\x87\xdb\x3e\x0f\x31\x96\x7f\x1e\xb6\x55\x1f\x5f\x55\x9f\x88\x88" "\x23\x11\xf1\xcd\xc0\xfe\x66\xbd\x3c\x59\xab\x4e\xed\x76\xe7\x01\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa0\x4f\x1c\xec\xf2\xfd" "\xff\xcc\x6f\x03\xbb\x7d\x74\xc0\xbf\xce\x4f\x7e\x43\x71\x6d\x18\xff\xbd" "\xf8\xa5\x27\xa0\x2f\x79\xfd\x87\xe2\xea\x12\xff\xa6\x05\x28\x00\x81\x0e" "\xc5\x25\xfe\xa1\xb8\xc4\x3f\x14\x97\xf8\x87\xe2\x12\xff\x50\x5c\xe2\x1f" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x7a\xea\xfc\xb9\x73\xd9\xb2\xbc\xf4\xe8\xfa\x64\x56\x9f\xba" "\xba\x30\x3f\x53\xbb\x7a\x6a\x2a\xad\xcf\x94\x67\xe7\x27\xcb\x93\xb5\xb9" "\x2b\xe5\xe9\x5a\x6d\xba\x9a\x96\x27\x6b\xb3\x1b\xfd\xbd\x6a\xad\x76\x65" "\x6c\x3c\xe6\xaf\x8d\x36\xd2\x7a\x63\xb4\xbe\xb0\x78\x61\xb6\x36\x7f\xb9" "\x71\xe1\xd2\x6c\x65\x3a\xbd\x90\x0e\xfd\x27\xbd\x02\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x67\x4b\x7d\x61\x71\xa6\x52\xad" "\xa6\x73\x0a\x5d\x0b\xef\xc5\x6e\x1f\xc6\xe7\x2f\xef\xe4\xe1\x49\xe7\x51" "\x4e\xda\x3a\xb8\x62\x5b\x4d\x0c\xf6\xcb\x30\x29\xf4\xb4\xb0\xcb\x13\x13" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb4\xf9\x27\x00\x00" "\xff\xff\x36\xd7\x33\x82", 1392); syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x20000140, /*flags=MS_RELATIME*/ 0x200000, /*opts=*/0x200005c0, /*chdir=*/3, /*size=*/0x570, /*img=*/0x20000680); memcpy((void*)0x20000180, "./bus\000", 6); syscall(__NR_open, /*file=*/0x20000180ul, /*flags=O_TRUNC|O_SYNC|O_NOCTTY|O_NOATIME|O_CREAT|O_WRONLY|0x3c*/ 0x14137dul, /*mode=*/0ul); memcpy((void*)0x20000080, "./file1\000", 8); res = syscall(__NR_creat, /*file=*/0x20000080ul, /*mode=*/0ul); if (res != -1) r[0] = res; *(uint32_t*)0x20000600 = 0x78; *(uint32_t*)0x20000604 = 0; *(uint64_t*)0x20000608 = 0; *(uint64_t*)0x20000610 = 0; *(uint32_t*)0x20000618 = 0; *(uint32_t*)0x2000061c = 0; *(uint64_t*)0x20000620 = 0; *(uint64_t*)0x20000628 = 0; *(uint64_t*)0x20000630 = 0; *(uint64_t*)0x20000638 = 0; *(uint64_t*)0x20000640 = 0; *(uint64_t*)0x20000648 = 0; *(uint32_t*)0x20000650 = 0; *(uint32_t*)0x20000654 = 0; *(uint32_t*)0x20000658 = 0; *(uint32_t*)0x2000065c = 0; *(uint32_t*)0x20000660 = 0; *(uint32_t*)0x20000664 = 0; *(uint32_t*)0x20000668 = 0; *(uint32_t*)0x2000066c = 0; *(uint32_t*)0x20000670 = 0; *(uint32_t*)0x20000674 = 0; syscall(__NR_write, /*fd=*/r[0], /*arg=*/0x20000600ul, /*len=*/0x78ul); memcpy((void*)0x20000280, "./file1\000", 8); syscall(__NR_unlink, /*path=*/0x20000280ul); memcpy((void*)0x20000380, "/dev/loop", 9); *(uint8_t*)0x20000389 = 0x30; *(uint8_t*)0x2000038a = 0; memcpy((void*)0x20000340, "./bus\000", 6); syscall(__NR_mount, /*src=*/0x20000380ul, /*dst=*/0x20000340ul, /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul); memcpy((void*)0x200005c0, "./bus\000", 6); res = syscall(__NR_open, /*file=*/0x200005c0ul, /*flags=*/0ul, /*mode=*/0ul); if (res != -1) r[1] = res; *(uint32_t*)0x20000104 = 0; *(uint32_t*)0x20000108 = 0; *(uint32_t*)0x2000010c = 3; *(uint32_t*)0x20000110 = 0; *(uint32_t*)0x20000118 = -1; memset((void*)0x2000011c, 0, 12); syz_io_uring_setup(/*entries=*/0x1526, /*params=*/0x20000100, /*ring_ptr=*/0, /*sqes_ptr=*/0); *(uint32_t*)0x20000140 = 0; syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x4c02, /*arg=*/0x20000140ul); return 0; }