// https://syzkaller.appspot.com/bug?id=4fd44e65e3eefc00ec5ac7d3d6f86171f7f25a11 // 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 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 void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) struct csum_inet { uint32_t acc; }; static void csum_inet_init(struct csum_inet* csum) { csum->acc = 0; } static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, size_t length) { if (length == 0) return; size_t i = 0; for (; i < length - 1; i += 2) csum->acc += *(uint16_t*)&data[i]; if (length & 1) csum->acc += le16toh((uint16_t)data[length - 1]); while (csum->acc > 0xffff) csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); } static uint16_t csum_inet_digest(struct csum_inet* csum) { return ~csum->acc; } 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; } #define FS_IOC_SETFLAGS _IOW('f', 2, long) static void remove_dir(const char* dir) { int iter = 0; DIR* dp = 0; retry: const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; while (umount2(dir, umount_flags) == 0) { } dp = opendir(dir); if (dp == NULL) { if (errno == EMFILE) { exit(1); } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); while (umount2(filename, umount_flags) == 0) { } struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } int i; for (i = 0;; i++) { if (unlink(filename) == 0) break; if (errno == EPERM) { int fd = open(filename, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno != EBUSY || i > 100) exit(1); if (umount2(filename, umount_flags)) exit(1); } } closedir(dp); for (int i = 0;; i++) { if (rmdir(dir) == 0) break; if (i < 100) { if (errno == EPERM) { int fd = open(dir, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno == EBUSY) { if (umount2(dir, umount_flags)) exit(1); continue; } if (errno == ENOTEMPTY) { if (iter < 100) { iter++; goto retry; } } } exit(1); } } 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"); if (symlink("/dev/binderfs", "./binderfs")) { } } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); reset_loop(); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); setup_test(); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; memcpy((void*)0x20000000, "ext4\000", 5); memcpy((void*)0x20000600, "./bus\000", 6); memcpy((void*)0x20000100, "journal_ioprio", 14); *(uint8_t*)0x2000010e = 0x3d; sprintf((char*)0x2000010f, "0x%016llx", (long long)3); *(uint8_t*)0x20000121 = 0x2c; memcpy((void*)0x20000122, "noacl", 5); *(uint8_t*)0x20000127 = 0x2c; memcpy((void*)0x20000128, "abort", 5); *(uint8_t*)0x2000012d = 0x2c; memcpy((void*)0x2000012e, "nobarrier", 9); *(uint8_t*)0x20000137 = 0x2c; memcpy((void*)0x20000138, "sysvgroups", 10); *(uint8_t*)0x20000142 = 0x2c; memcpy((void*)0x20000143, "debug_want_extra_isize", 22); *(uint8_t*)0x20000159 = 0x3d; sprintf((char*)0x2000015a, "0x%016llx", (long long)6); *(uint8_t*)0x2000016c = 0x2c; memcpy((void*)0x2000016d, "noinit_itable", 13); *(uint8_t*)0x2000017a = 0x2c; *(uint8_t*)0x2000017b = 0; memcpy( (void*)0x20000640, "\x78\x9c\xec\xdb\xcf\x6f\x14\x55\x1c\x00\xf0\xef\xcc\x6e\xf9\xa9\xb4\x22" "\xa2\x20\xc6\x2a\x1a\x1b\x7f\xb4\xb4\x80\x72\xf0\xa2\xd1\xc4\x83\x26\x1a" "\x3d\xe0\xb1\xb6\x85\x20\x0b\x35\xb4\x26\x42\x88\x16\x63\xf0\x68\x48\xbc" "\x1b\x8f\x26\xfe\x05\x9e\x3c\x19\xf5\x64\xe2\xc5\x83\xde\x0d\x09\x51\x62" 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"\xfc\x9b\xbf\x06\xd6\x69\xe8\xb1\x21\x5c\x7b\xae\xfe\x01\x28\x8b\xfd\x66" "\xfe\xaa\x6f\x29\x47\x9a\x97\x59\xcb\x3f\xc8\x70\x44\x1c\x5f\xf8\xeb\xb3" "\xec\x15\x2d\xf3\x10\xd5\x36\xf3\x06\x00\x00\xab\xf5\x75\x36\xfe\x79\xb2" "\x69\xfc\x97\x8f\x3f\xd2\xd8\xdb\x50\x6e\x57\xbe\x36\x34\x14\x11\x77\x45" "\xc4\xee\x88\xb8\x3b\x22\xf6\x44\xc4\x3d\x11\xb5\xb2\xf7\x46\xc4\x7d\xcb" "\xac\xbf\x75\x69\xe8\xdf\xeb\x30\xe9\xd5\x15\x05\x76\x9b\xb2\xf1\xdf\xb3" "\xf9\xda\x56\xf3\xf8\xaf\x18\xfd\xc5\x50\x29\xcf\xdd\x59\x8b\x7f\x20\x39" "\x71\xaa\x32\x73\x28\xff\x9b\x8c\xc4\xc0\xd6\x2c\x3f\xde\xee\xe0\xc5\x21" "\x5e\xf8\xf1\x93\x4e\xf5\x37\x8e\xff\xb2\x57\x56\x7f\x31\x16\xcc\x0f\x72" "\xb5\xdc\x32\x41\x37\x3d\x39\x3f\xd9\xad\x41\xe9\xb5\x4b\x11\xfb\xcb\xed" "\xe2\x4f\x16\x57\x02\x92\x88\xd8\x17\x11\xfb\x97\x77\xe8\x5d\x45\xe2\xd4" "\xe3\x5f\x1c\xe8\x54\xe8\xbf\xe3\x5f\x42\x17\xd6\x99\xaa\x9f\x47\x3c\x56" "\x3f\xff\x0b\xd1\x12\x7f\x21\x59\x7a\x7d\x72\x6c\x5b\x54\x66\x0e\x8d\xd5" "\xaf\x8a\x52\x9b\x3a\xbe\xff\xe1\xf2\xab\x9d\xea\x5f\x55\xfc\x5d\x90\x9d" "\xff\x1d\xcd\xd7\x7f\x4b\x89\xc1\x3f\x92\xc6\xf5\xda\xb9\xe5\xd7\x71\xf9" "\x97\x8f\x3b\xae\xad\x96\x57\x78\xfd\x6f\x49\xde\xa8\xad\xe9\x6e\xc9\xdf" "\x7b\x6f\x72\x7e\xfe\xdc\x78\xc4\x96\xe4\xe5\x5a\xbe\xe9\xfd\x89\x5b\xfb" "\x16\xf9\xa2\x7c\x16\xff\xc8\xc1\xf6\xfd\x7f\x77\xbe\x4f\x16\xff\xfd\x11" "\x71\x20\xe2\xa7\xa2\xdb\x3d\x98\x9f\xbb\x87\x22\xe2\xe1\x88\x38\xb8\x44" "\xfc\xdf\x3e\xff\xc8\xdb\x9d\xb6\x6d\x84\xf3\x3f\xdd\xf6\xfe\xb7\x78\xfd" "\x0f\x35\x9f\xff\xe5\x27\x4a\xa7\xbf\xf9\xaa\x53\xfd\xb7\x77\xff\x3b\x52" "\x4b\x8d\xe4\xef\xd4\xee\x7f\xb9\xed\x1d\x8e\xdb\xb9\x39\xdb\xf2\x12\x2b" "\xbd\x9a\x01\x00\x00\xe0\xff\x27\xad\x7d\x37\x3e\x49\x47\x17\xd3\x69\x3a" "\x3a\x5a\xff\x0e\xff\x9e\xd8\x91\x56\x66\xe7\xe6\x9f\x38\x31\xfb\xee\xd9" "\xe9\xfa\x77\xe8\x87\x62\x20\x2d\xe6\x3f\x07\x1b\xe6\x43\xc7\x93\x85\xfc" "\x88\xf5\xfc\x44\x3e\x57\x5c\x6c\x3f\x9c\xcf\x1b\x7f\x5a\xda\x5e\xcb\x8f" "\x4e\xcd\x56\xa6\x7b\x1c\x3b\xf4\xbb\x9d\x1d\xfa\x7f\xe6\xd7\x76\x93\xd9" "\xc0\xe6\xe2\xf7\x5a\xd0\xbf\x5a\xfb\x7f\xda\xa3\x76\x00\xeb\xcf\xf3\x1f" "\xfa\x97\xfe\x0f\xfd\x4b\xff\x87\xfe\x55\xf4\xff\xd7\x1a\xde\xfb\xa0\xa5" "\x8c\xb5\x00\xd8\x9c\x3c\xff\xa1\x7f\xe9\xff\xd0\xbf\x16\xfb\xff\xa5\xde" "\xb6\x03\x58\x7f\x9e\xff\xd0\x97\x56\xf3\xbb\xfe\xb5\x4a\x94\x97\xf8\xf5" "\xfe\x06\x4d\x14\xb3\xa3\x1b\xa5\x3d\xeb\x90\x88\x74\x43\x34\x43\xa2\x4d" "\xa2\xdc\x85\xde\xdd\xc3\x9b\x12\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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\x17\xfd\x13\x00\x00\xff\xff\xd4\x6f\xef\xec", 1129); syz_mount_image( /*fs=*/0x20000000, /*dir=*/0x20000600, /*flags=MS_I_VERSION|MS_POSIXACL|MS_SYNCHRONOUS|MS_STRICTATIME|MS_NODEV|0x700*/ 0x1810714, /*opts=*/0x20000100, /*chdir=*/-1, /*size=*/0x469, /*img=*/0x20000640); memcpy((void*)0x20000040, "./bus\000", 6); syscall(__NR_creat, /*file=*/0x20000040ul, /*mode=*/0ul); memcpy((void*)0x20000380, "/dev/loop", 9); *(uint8_t*)0x20000389 = 0x30; *(uint8_t*)0x2000038a = 0; memcpy((void*)0x20000140, "./bus\000", 6); syscall(__NR_mount, /*src=*/0x20000380ul, /*dst=*/0x20000140ul, /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul); memcpy((void*)0x20000080, "./bus\000", 6); res = syscall(__NR_open, /*file=*/0x20000080ul, /*flags=O_SYNC|O_NOCTTY|O_DIRECT|O_CLOEXEC|O_RDWR*/ 0x185102ul, /*mode=*/0ul); if (res != -1) r[0] = res; syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0xb36000ul, /*prot=PROT_WRITE*/ 2ul, /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul, /*fd=*/r[0], /*offset=*/0ul); memcpy((void*)0x20000100, "sit0\000\000\000\000\000\000\000\000\000\000\000\000", 16); *(uint64_t*)0x20000110 = 0x20000440; memcpy((void*)0x20000440, "tunl0\000\000\000\000\000\000\000\000\000\000\000", 16); *(uint32_t*)0x20000450 = 0; *(uint16_t*)0x20000454 = htobe16(0); *(uint16_t*)0x20000456 = htobe16(0); *(uint32_t*)0x20000458 = htobe32(0); *(uint32_t*)0x2000045c = htobe32(0); STORE_BY_BITMASK(uint8_t, , 0x20000460, 5, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x20000460, 4, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x20000461, 0, 0, 2); STORE_BY_BITMASK(uint8_t, , 0x20000461, 0, 2, 6); *(uint16_t*)0x20000462 = htobe16(0x14); *(uint16_t*)0x20000464 = htobe16(0); *(uint16_t*)0x20000466 = htobe16(0); *(uint8_t*)0x20000468 = 0; *(uint8_t*)0x20000469 = 0; *(uint16_t*)0x2000046a = htobe16(0); *(uint8_t*)0x2000046c = 0xac; *(uint8_t*)0x2000046d = 0x14; *(uint8_t*)0x2000046e = 0x14; *(uint8_t*)0x2000046f = 0xbb; *(uint32_t*)0x20000470 = htobe32(-1); struct csum_inet csum_1; csum_inet_init(&csum_1); csum_inet_update(&csum_1, (const uint8_t*)0x20000460, 20); *(uint16_t*)0x2000046a = csum_inet_digest(&csum_1); syscall(__NR_ioctl, /*fd=*/-1, /*cmd=*/0x89f0, /*arg=*/0x20000100ul); } 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); use_temporary_dir(); loop(); return 0; }