// https://syzkaller.appspot.com/bug?id=7f0a5bdbdd9e24a6780456f16719826d6c92b45d // 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 #include #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif static unsigned long long procid; 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 setup_common() { if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { } } static void setup_binderfs() { if (mkdir("/dev/binderfs", 0777)) { } if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) { } if (symlink("/dev/binderfs", "./binderfs")) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setsid(); struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = (200 << 20); setrlimit(RLIMIT_AS, &rlim); rlim.rlim_cur = rlim.rlim_max = 32 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 136 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 128 << 20; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); if (unshare(CLONE_NEWNS)) { } if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) { } if (unshare(CLONE_NEWIPC)) { } if (unshare(0x02000000)) { } if (unshare(CLONE_NEWUTS)) { } if (unshare(CLONE_SYSVSEM)) { } typedef struct { const char* name; const char* value; } sysctl_t; static const sysctl_t sysctls[] = { {"/proc/sys/kernel/shmmax", "16777216"}, {"/proc/sys/kernel/shmall", "536870912"}, {"/proc/sys/kernel/shmmni", "1024"}, {"/proc/sys/kernel/msgmax", "8192"}, {"/proc/sys/kernel/msgmni", "1024"}, {"/proc/sys/kernel/msgmnb", "1024"}, {"/proc/sys/kernel/sem", "1024 1048576 500 1024"}, }; unsigned i; for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++) write_file(sysctls[i].name, sysctls[i].value); } static int wait_for_loop(int pid) { if (pid < 0) exit(1); int status = 0; while (waitpid(-1, &status, __WALL) != pid) { } return WEXITSTATUS(status); } static void drop_caps(void) { struct __user_cap_header_struct cap_hdr = {}; struct __user_cap_data_struct cap_data[2] = {}; cap_hdr.version = _LINUX_CAPABILITY_VERSION_3; cap_hdr.pid = getpid(); if (syscall(SYS_capget, &cap_hdr, &cap_data)) exit(1); const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE); cap_data[0].effective &= ~drop; cap_data[0].permitted &= ~drop; cap_data[0].inheritable &= ~drop; if (syscall(SYS_capset, &cap_hdr, &cap_data)) exit(1); } static int do_sandbox_none(void) { if (unshare(CLONE_NEWPID)) { } int pid = fork(); if (pid != 0) return wait_for_loop(pid); setup_common(); sandbox_common(); drop_caps(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); setup_binderfs(); loop(); exit(1); } void loop(void) { memcpy((void*)0x20000100, "ext4\000", 5); memcpy((void*)0x20000500, "./file0\000", 8); memcpy((void*)0x20000200, "nobarrier,noblock_validity,nogrpid,bh,max_batch_time=" "0x0000000000000400,resgid=", 79); sprintf((char*)0x2000024f, "0x%016llx", (long long)0); memcpy((void*)0x20000261, ",jqfmt=vfsold,i_version,resgid=", 31); sprintf((char*)0x20000280, "0x%016llx", (long long)0); memset((void*)0x20000292, 0, 2); memcpy( (void*)0x20000540, "\x78\x9c\xec\xdd\x4d\x6b\x5c\x7b\x19\x00\xf0\xe7\x9c\x64\x6a\xda\xa6\x26" "\x45\x17\xb5\x60\x2d\xb6\x92\x14\xed\x4c\xd2\xd8\x36\xb8\xa8\x0a\xa2\xab" "\x82\x5a\xf7\x35\x26\x93\x10\x32\xc9\x84\xcc\xa4\x6d\x42\xd1\x14\x3f\x80" "\x20\xa2\x82\x2b\x57\x6e\x04\x3f\x80\x20\xfd\x08\x22\x14\x74\x2f\x2a\x8a" "\xdc\xdb\xde\xbb\xb8\x8b\x7b\x3b\x97\x99\x39\xd3\x9b\xa6\x33\x79\xe1\xce" "\x4b\x49\x7e\x3f\x38\x99\xff\x79\x99\x3c\xcf\x33\xc3\xfc\xcf\xfc\xcf\x39" "\xcc\x09\xe0\xc4\xba\x1c\x11\x37\x22\xe2\x65\xad\x56\xbb\x16\x11\x63\xd9" "\xf2\x34\x9b\x9e\x9e\x8d\x88\x9d\xe6\x76\x2f\x9e\x3f\x9e\xaf\x4f\x49\xd4" "\x6a\xf7\xde\x49\x22\xc9\x96\xd5\xb7\x9f\xdc\xf5\x3f\xb3\xa7\xc4\x48\x44" "\xfc\xf0\x7b\x11\x3f\x49\xde\x8c\x5b\xd9\xda\x5e\x99\x2b\x95\x8a\x1b\xd9" "\x7c\xa1\xba\xba\x5e\xa8\x6c\x6d\x5f\x5f\x5e\x9d\x5b\x2a\x2e\x15\xd7\x66" "\x66\xa6\x6f\xcd\xde\x9e\xbd\x39\x3b\xd5\x95\x3a\x47\x23\xe2\xce\x77\xfe" "\xf3\xeb\x5f\xfc\xe1\xbb\x77\xfe\xf2\xb5\x87\xff\xbc\xff\xbf\xc9\x9f\x26" "\xd9\xf2\xd8\x55\x47\xb7\x35\x4b\xcf\x35\x5e\x8b\x96\xe1\x88\xd8\xe8\x45" "\xb0\x01\x18\xca\xea\xc9\x0d\x3a\x11\x00\x00\x0e\xa5\xf5\x3d\xff\xcb\x11" "\x71\x2d\xc6\x62\xa8\xf1\x6d\x0e\x00\x00\x00\x38\x4e\x6a\xdf\x1c\x8d\x0f" "\x93\x88\x1a\x00\x00\x00\x70\x6c\xa5\x8d\x6b\x60\x93\x34\x9f\x5d\x07\x30" "\x1a\x69\x9a\xcf\x37\xaf\xe1\xfd\x7c\x9c\x49\x4b\xe5\x4a\xf5\xab\x8b\xe5" "\xcd\xb5\x85\xe6\xb5\xb2\xe3\x91\x4b\x17\x97\x4b\xc5\xa9\xec\x5a\xe1\xf1" "\xc8\x25\xf5\xf9\xe9\x46\xfb\x93\xf9\x1b\xaf\xe6\x23\x62\xb9\x54\x9c\x89" "\x88\xf3\x11\xf1\xab\xb1\xd3\x8d\xf5\xf9\xf9\x72\x69\x61\xd0\x07\x3f\x00" "\x00\x00\xe0\x84\x38\xbb\x67\xfc\xff\xfe\x58\x73\xfc\x7f\x48\xb5\xa1\x9e" "\x66\x07\x00\x00\x00\x74\xcd\xf8\xa0\x13\x00\x00\x00\x00\x7a\xce\xf8\x1f" "\x00\x00\x00\x8e\x3f\xe3\x7f\x00\x00\x00\x38\xd6\xbe\x7f\xf7\x6e\x7d\xaa" "\xb5\xee\x7f\xbd\xf0\x60\x6b\x73\xa5\xfc\xe0\xfa\x42\xb1\xb2\x92\x5f\xdd" "\x9c\xcf\xcf\x97\x37\xd6\xf3\x4b\xe5\xf2\x52\xe3\x37\xfb\x56\x0f\xfa\x7f" "\xa5\x72\x79\xfd\xeb\xb1\xb6\xf9\xa8\x50\x2d\x56\xaa\x85\xca\xd6\xf6\xfd" "\xd5\xf2\xe6\x5a\xf5\xfe\xf2\x6b\xb7\xc0\x06\x00\x00\x00\xfa\xe8\xfc\x97" "\x9e\xfe\x23\x89\x88\x9d\x6f\x9c\x6e\x4c\x75\xa7\x06\x9d\x14\xd0\x17\xc3" "\x47\xd9\xf8\xdf\xbd\xcb\x03\xe8\x3f\xbf\xdf\x0b\x27\xd7\x91\xf6\xff\xc0" "\xb1\x92\x1b\x74\x02\xc0\xc0\x25\x07\xac\xef\x78\xf1\xce\x5f\xbb\x9f\x0b" "\x00\x00\xd0\x1b\x13\x5f\x68\x7f\xfe\x3f\x39\xf0\xd8\xc0\x4e\xda\xa7\x14" "\x81\x1e\x71\xfc\x0f\x4e\x2e\xe7\xff\xe1\xe4\x72\xfe\x1f\x4e\xae\x5c\x0c" "\x45\x36\x90\x4f\x76\x06\x9d\x0c\x30\x10\xbd\x3f\xff\x5f\xab\x1d\x29\x21" "\x00\x00\xa0\xeb\x46\x1b\x53\x92\xe6\x23\x1a\xc7\x01\x46\x23\x4d\xf3\xf9" "\x88\x73\x8d\xdb\x02\xe4\x92\xc5\xe5\x52\x71\x2a\x22\x3e\x1b\x11\x7f\x1f" "\xcb\x7d\xa6\x3e\x3f\xdd\x78\x66\x72\xe0\x98\x01\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x68\xaa\xd5\x92\xa8" "\x01\x00\x00\x00\xc7\x5a\x44\xfa\xdf\x24\xbb\xff\xd7\xc4\xd8\xd5\xd1\xbd" "\xc7\x07\x4e\x25\x1f\x8c\x35\x1e\x23\xe2\xe1\xef\xee\xfd\xe6\xd1\x5c\xb5" "\xba\x31\x5d\x5f\xfe\xee\xab\xe5\xd5\xdf\x66\xcb\x6f\x0c\xe2\x08\x06\x00" "\x00\x00\xb0\x57\x6b\x9c\xde\x1a\xc7\x03\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x37\xbd\x78\xfe\x78\xbe\x35" "\xf5\x33\xee\xff\xbf\x1d\x11\xe3\xed\xe2\x0f\xc7\x48\xe3\x71\x24\x72\x11" "\x71\xe6\xbd\x24\x86\x77\x3d\x2f\x89\x88\xa1\x2e\xc4\xdf\x79\x12\x11\x17" "\xda\xc5\x4f\xea\x69\xc5\x78\x96\x45\xbb\xf8\xa7\x07\x18\x3f\x8d\x88\xb3" "\x5d\x88\x0f\x27\xd9\xd3\x7a\xff\xf3\xad\x76\x9f\xbf\x34\x2e\x37\x1e\xdb" "\x7f\xfe\x6e\x35\x7a\xa8\x4f\xaf\x73\xff\x97\xbe\xea\xff\x86\x3a\xf4\x3f" "\xe7\x0e\x19\xe3\xe2\xb3\x3f\x15\x3a\xc6\x7f\x12\x71\x71\xb8\x7d\xff\xd3" "\x8a\x9f\x74\x88\x7f\xe5\x90\xf1\x7f\xfc\xa3\xed\xed\x4e\xeb\x6a\xbf\x8f" "\x98\x68\xbb\xff\x49\x5e\x8b\x55\xa8\xae\xae\x17\x2a\x5b\xdb\xd7\x97\x57" "\xe7\x96\x8a\x4b\xc5\xb5\x99\x99\xe9\x5b\xb3\xb7\x67\x6f\xce\x4e\x15\x16" "\x97\x4b\xc5\xec\x6f\xdb\x18\xbf\xfc\xe2\x9f\x5f\xee\x57\xff\x99\x0e\xf1" "\xc7\x0f\xa8\xff\xea\x21\xeb\xff\xe8\xd9\xa3\xe7\x9f\x6b\x36\x73\xed\xe2" "\x4f\x5e\x69\xff\xfe\x5f\xe8\x10\x3f\xcd\xf6\x7d\x5f\xc9\xda\xf5\xf5\x13" "\xad\xf6\x4e\xb3\xbd\xdb\xa5\x3f\xfe\xed\xd2\x7e\xf5\x2f\x74\xa8\xff\xa0" "\xf7\x7f\xf2\x90\xf5\x5f\xfb\xc1\xcf\xff\x75\xc8\x4d\x01\x80\x3e\xa8\x6c" "\x6d\xaf\xcc\x95\x4a\xc5\x8d\xbd\x8d\xd6\xce\xbe\xcd\xaa\xe3\xd7\x38\xf0" "\xd5\xd8\xaf\x51\x7f\xa5\xde\x8a\x2a\x34\x8e\xda\xf8\xd9\xdb\x91\xc6\xa0" "\x1a\x23\xfb\x7d\xba\x07\xd7\x27\x01\x00\x00\xbd\xf1\xe6\x18\x18\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe8\xb7\x7e\xfe\xba" "\x5e\xcb\xce\x60\x4a\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd8\xd7\xc7\x01\x00\x00\xff\xff" "\xfc\x49\xd1\xcc", 1246); syz_mount_image( /*fs=*/0x20000100, /*dir=*/0x20000500, /*flags=MS_POSIXACL|MS_REC|MS_SYNCHRONOUS|MS_SILENT|MS_NOSUID|0x900*/ 0x1c912, /*opts=*/0x20000200, /*chdir=*/1, /*size=*/0x4de, /*img=*/0x20000540); memcpy((void*)0x200003c0, "./file0\000", 8); memcpy((void*)0x20000040, "./file0\000", 8); memcpy((void*)0x20000180, "incremental-fs\000", 15); syscall(__NR_mount, /*src=*/0x200003c0ul, /*dst=*/0x20000040ul, /*type=*/0x20000180ul, /*flags=*/0ul, /*opts=*/0ul); memcpy((void*)0x20000180, "./file1\000", 8); syscall(__NR_lsetxattr, /*path=*/0x20000180ul, /*name=*/0ul, /*val=*/0ul, /*size=*/0xe01ul, /*flags=*/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); do_sandbox_none(); return 0; }