// https://syzkaller.appspot.com/bug?id=8f1f59644e34eb2b3343cdc35ffe79f725baf5db // 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); } 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; } static long syz_open_dev(volatile long a0, volatile long a1, volatile long a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf) - 1); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } //% 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; const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; retry: 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 (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x20000000, "exfat\000", 6); memcpy((void*)0x20000380, "\351\037q\211Y\036\2223aK\000", 11); memcpy((void*)0x20000040, "dmask=00000000000000000002621,utf8,umask=00000000000000000200000," "namecase=1,discard,errors=remount-ro,umask=00000000000000000200004," "umask=00000000000000000003377,namecase=1,utf8,iocharset=iso8859-4," "iocharset=cp874,dmask=01777777777777777777770,errors=remount-ro,uid=", 266); sprintf((char*)0x2000014a, "0x%016llx", (long long)0); sprintf((char*)0x2000015c, "0x%016llx", (long long)0); sprintf((char*)0x2000016e, "%020llu", (long long)0); sprintf((char*)0x20000182, "%020llu", (long long)-1); *(uint64_t*)0x20000196 = -1; *(uint8_t*)0x2000019e = 0; sprintf((char*)0x2000019f, "%020llu", (long long)0); memcpy( (void*)0x200001b3, "\x49\x44\x0f\xb4\x00\x5c\xba\x20\x65\x3d\x23\x26\x29\x2c\x26\x5c\x2c\x00" "\xe7\x9f\xec\xa4\xa2\xe1\x05\x3f\xdd\x2c\x84\xe7\xa8\x9a\xa4\xee\x02\xcb" "\xb4\x76\x95\xd7\xad\xe8\xfd\x43\x62\xd0\xe3\x7f\xbb\xb3\x65\xb5\x29\xe3" "\xd4\xcf\xa7\xec\x78\xbc\x70\x97\x84\xcc\x24\xff\x7c\xfd\x3a\xcc\xb1\xa5" "\x3f\xcd\x27\xbc\xb1\x79\x4f\xcc\x15\xfc\x6e\xea\xe6\xdd\x85\x88\x7f\xec" "\x60\x9d\x9d\xf9\xeb\x63\xc1\xeb\x27\xe9\xa7\xe7\xc8\x7e\x55\x1a\x87\x8c" "\xe3\xdb\x47\x1a\x5a\x29\xb9\x50\x99\x86\xd2\x10\x54\xcc\x6d\x2e\x9b\xe1" "\xe1\x6b\x9e\x2e\x6e\x9d\xf5\xb4\xb9\x5e\x1b", 137); memcpy( (void*)0x20002180, "\x78\x9c\xec\xdc\x0b\xd8\x4d\xd5\xf6\x30\xf0\x31\xe6\x9c\x8b\x97\xa4\x9d" "\xe4\x3e\xc7\x1c\x8b\x1d\x2f\x26\x49\x92\x4b\x92\x5c\x92\x24\x39\x92\xe4" "\x96\x90\x24\x49\x92\x54\xee\xb7\x24\x24\x21\xf7\x24\xf7\x90\xdc\x42\x72" "\xbf\xdf\x72\x4f\x92\x24\x49\x12\x92\x5b\x32\xbf\x47\xa7\xf3\xe9\x9c\xce" "\xff\xeb\x9c\xff\xbf\xff\xe3\xf9\xce\x3b\x7e\xcf\xb3\x9e\x77\x8e\xbd\xf6" "\x98\x6b\xcc\x3d\xde\xe7\x5d\x6b\xed\xf7\xd9\xfb\xdb\xf6\x03\x2b\xd7\xad" "\x52\xa1\x36\x33\xc3\xff\x08\xfe\xf5\x47\x17\x00\x48\x01\x80\x3e\x00\x70" "\x0d\x00\x44\x00\x50\x22\x4b\x89\x2c\x97\xf6\x67\xd0\xd8\xe5\x7f\x76\x10" "\xf1\xe7\x7a\x60\xca\x95\xae\x40\x5c\x49\xd2\xff\xb4\x4d\xfa\x9f\xb6\x49" "\xff\xd3\x36\xe9\x7f\xda\x26\xfd\x4f\xdb\xa4\xff\x69\x9b\xf4\x3f\x6d\x93" "\xfe\x0b\x91\x96\x6d\x99\x9a\xf3\x5a\xd9\xd2\xee\x26\xef\xff\xa7\x65\x72" "\xfe\xff\x0f\x72\xa8\xc8\xa8\x2f\xd7\x15\xb9\xbe\xc3\xbf\x91\x22\xfd\x4f" "\xdb\xa4\xff\x69\x9b\xf4\x3f\x6d\x93\xfe\xa7\x6d\xd2\xff\xb4\x4d\xfa\x9f" "\xb6\x49\xff\xd3\x36\xe9\xbf\x10\x69\xd9\x7f\xff\xbd\x63\xf9\xdf\xc1\x7f" "\xc2\x76\xa5\x7f\xff\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42" "\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84" "\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08" "\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10" "\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21" "\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42" "\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84" 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"\x86\x71\xa3\xb8\x71\xfc\x48\xdc\x24\x7e\x34\x6e\x1a\x37\x8b\x9b\xc7\x8f" "\xc5\x2d\xe2\xc7\xe3\x96\xf1\x13\x71\xab\xf8\xc9\xb8\x75\xfc\xd4\x1f\xee" "\xef\x12\x77\x8d\xbb\xc5\xdd\xe3\xee\x71\x08\xf7\xe8\xb9\xc9\x79\xc9\xf9" "\xc9\x0f\x92\x0b\x92\x0b\x93\x8b\x92\x1f\x26\x17\x27\x3f\x4a\x2e\x49\x2e" "\x4d\x2e\x4b\x2e\x4f\xae\x48\xae\x4c\xae\x4a\xae\x4e\xae\x49\xae\x4d\xae" "\x4b\xae\x4f\x6e\x48\x6e\x4c\x6e\x4a\x6e\x4e\x86\x50\x25\x3d\x78\xf4\xca" "\x6b\x6f\x7c\xe4\xd3\xf9\xf4\x3e\xc5\x67\xf0\x19\xfd\x55\x3e\x93\xbf\xda" "\x67\xf6\xd7\xf8\x84\xbf\xd6\x67\xf1\xd7\xf9\xac\xfe\x7a\x9f\xcd\x67\xf7" "\x39\x7c\x4e\x9f\xcb\xe7\xf6\x79\xbc\xf5\xe4\x9d\x67\x1f\xfb\xbc\x3e\x9f" "\x4f\xfa\x1b\x7c\x7e\x5f\xc0\xa7\xfa\x82\xbe\x90\x2f\xec\xbd\x2f\xe2\x8b" "\xfa\x46\xbe\xb1\x6f\xec\x9b\xf8\x47\x7d\x53\xdf\xcc\x37\xf7\x8f\xf9\xc7" "\xfc\xe3\xfe\x71\xff\x84\x7f\xc2\x3f\xe9\x5b\xfb\xa7\x7c\x1b\xff\xb4\x6f" "\xeb\x9f\xf1\xed\xfc\xb3\xfe\x59\xff\x9c\xef\xe0\x9f\xf7\x1d\xfd\x0b\xfe" "\x45\xff\x92\xef\xe4\x3b\xfb\x2e\xbe\x8b\xef\xe6\xbb\xf9\x1e\xbe\x87\xef" "\xe5\x7b\xf9\x3e\xbe\x8f\xef\xeb\xfb\xfa\x7e\xbe\x9f\xef\xef\xfb\xfb\x81" "\x7e\xa0\x1f\xe4\x07\xf9\xc1\x7e\xb0\x1f\xe2\x87\xf8\x61\x7e\x98\x1f\xee" "\x87\xfb\x91\x7e\xa4\x1f\xed\x47\xfb\xb1\x7e\xac\x1f\xe7\xc7\xf9\xf1\x7e" "\xbc\x9f\xe0\x27\xf8\x49\x7e\x92\x9f\xe2\xa7\xf8\x69\x7e\x9a\x9f\xee\xa7" "\xfb\x99\x7e\xa6\x9f\x95\x3a\xcb\xcf\xf6\xb3\xfd\x5c\x3f\xd7\xcf\xf7\xf3" "\xfd\x02\xbf\xc0\x2f\xf2\x8b\xfc\x62\xbf\xd8\x2f\xf1\x4b\xfc\x32\xbf\xcc" "\xaf\xf0\x2b\xfc\x2a\xbf\xca\xaf\xf1\x6b\xfc\x3a\xbf\xce\x6f\xf0\x1b\xfc" "\x26\xbf\xc9\x6f\xf1\x5b\xfc\x56\xbf\xd5\x6f\xf7\xdb\xfd\x4e\xbf\xd3\xef" "\xf6\xbb\xfd\x1e\xbf\xc7\xef\xf5\x7b\xfd\x3e\xbf\xcf\xef\xf7\xfb\xfd\x01" "\x7f\xc0\x1f\xf4\x5f\xf9\x43\xfe\x6b\x7f\xd8\x7f\xe3\x8f\xf8\x6f\xfd\x51" "\xff\x9d\x3f\xe6\xbf\xf7\xc7\xfd\x09\x7f\xd2\xff\xe0\x4f\xf9\x1f\xfd\x69" "\x7f\xc6\x9f\xf5\xe7\xfc\x79\xff\x93\xbf\xe0\x7f\xf6\x17\x7d\xf0\x63\x13" "\x6f\x25\xc6\x25\xde\x4e\x8c\x4f\xbc\x93\x98\x90\x98\x98\x98\x94\x98\x9c" "\x98\x92\x98\x9a\x98\x96\x78\x37\x31\x3d\x31\x23\x31\x33\xf1\x5e\x62\x56" "\xe2\xfd\xc4\xec\xc4\x9c\xc4\xdc\xc4\xbc\xc4\xfc\xc4\x07\x89\x05\x89\x85" "\x89\x45\x89\x0f\x13\x8b\x13\x1f\x25\x96\x24\x96\x26\x96\x25\x96\x27\x56" "\x24\x56\x26\x42\xc8\xbd\x35\x0e\x79\x43\xbe\x90\x0c\x37\x84\xfc\xa1\x40" "\x48\x0d\x05\x43\xa1\x50\x38\xf8\x50\x24\x14\x0d\x37\x86\x62\xe1\xa6\x50" "\x3c\xdc\x1c\x4a\x84\x5b\x42\xc9\x70\x6b\x28\x15\x4a\x87\x32\xe1\xe1\x50" "\x3f\x34\x08\x0d\x43\xa3\xd0\x38\x3c\x12\x9a\x84\x47\x43\xd3\xd0\x2c\x34" "\x0f\x8f\x85\x16\xe1\xf1\xd0\x32\x3c\x11\x5a\x85\x27\x43\xeb\xf0\x54\x68" "\x13\x9e\x0e\x6d\xc3\x33\xa1\x5d\x78\x36\xb4\x0f\xcf\x85\x0e\x7f\xbb\xe3" "\x0a\x2f\x85\x4e\xa1\x73\xe8\x12\xba\x86\x6e\xa1\x7b\xe8\x11\x7a\x86\x5e" "\xa1\x77\xe8\x13\x5e\x0e\x7d\xc3\x2b\xa1\x5f\x78\x35\xf4\x0f\x03\xc2\xc0" "\xf0\x5a\x18\x14\x5e\x0f\x83\xc3\x1b\x61\x48\x18\x1a\x86\x85\x37\xc3\xf0" "\x30\x22\x8c\x0c\xa3\xc2\xe8\x30\x26\x8c\x0d\x6f\x85\x71\xe1\xed\x30\x3e" "\xbc\x13\x26\x84\x89\x61\x52\x98\x1c\xa6\x84\xa9\x61\x5a\x78\x37\x4c\x0f" "\x33\xc2\xcc\xf0\x5e\x98\x15\xde\x0f\xb3\xc3\x9c\x30\x37\xcc\x0b\xf3\xc3" "\x07\x61\x41\x58\x18\x16\x85\x0f\xc3\xe2\xf0\x51\x58\x12\x96\x86\x65\x61" "\x79\x58\x11\x56\x86\x55\x61\x75\x58\x13\xd6\x86\x75\x61\x7d\xd8\x10\x36" "\x86\x4d\x61\x73\xd8\x12\x3e\x0e\x5b\xc3\xb6\xb0\x3d\xec\x08\x3b\xc3\xae" "\xb0\x3b\x7c\x12\xf6\x84\x4f\xc3\xde\xf0\x59\xd8\x17\x3e\x0f\xfb\xc3\x17" "\xe1\x40\xf8\x32\x1c\x0c\x5f\x85\x43\xe1\xeb\x70\x38\x7c\x13\x8e\x84\x6f" "\xc3\xd1\xf0\x5d\x38\x16\xbe\x0f\xc7\xc3\x89\x70\x32\xfc\x10\x4e\x85\x1f" "\xc3\xe9\x70\x26\x9c\x0d\xe7\xc2\xf9\xf0\x53\xb8\x10\x7e\x0e\x17\xe5\x33" "\x6b\x42\x08\x21\x84\x10\xff\x92\xee\x7f\xb0\xbf\xeb\x3f\x79\xcc\x00\x80" "\xfa\x75\xdc\x0d\x00\xae\xde\x96\xf3\xd0\x6f\xf7\x6b\x00\xd8\x90\xed\xaf" "\xe3\x9e\x2a\x57\x8b\x04\x00\x3c\xd9\xb9\xfd\x03\x7f\xdb\x2a\x56\xec\xd2" "\xa5\xcb\xaf\xcf\x5d\xa2\x21\xca\x37\x07\x00\x12\xff\x70\x80\x5f\xe3\xa5" "\xd0\x1c\x1e\x87\x56\xd0\x0c\x8a\xfd\xd3\xfa\x7a\xaa\xe7\xcf\xf3\x1f\xcc" "\x9f\xbc\x05\x20\xe3\x6f\x72\x52\xe0\x72\x7c\x79\xfe\x2f\xfe\x8b\xf9\x1f" "\x79\x6c\xd8\x82\x92\xf1\xd9\x2c\xff\x8f\xf9\xe7\x00\xa4\xe6\xbb\x9c\x93" "\x01\x2e\xc7\x4b\xa1\xf9\xa5\xd5\x40\x33\x28\xfe\x5f\xcc\x9f\xbd\xc9\x1f" "\xd4\x9f\xe1\xcb\xb1\x00\x4d\x7f\x93\x93\x09\x2e\xc7\x97\xeb\x2f\x0a\x8f" "\xc2\x53\xd0\xea\xef\x9e\x29\x84\x10\x42\x08\x21\x84\x10\x42\xfc\x55\x4f" "\x55\xa6\xed\x1f\xdd\x3f\x5f\xba\x3f\xcf\x65\x2e\xe7\xa4\x87\xcb\xf1\x1f" "\xdd\x9f\x0b\x21\x84\x10\x42\x08\x21\x84\x10\xe2\xca\x7b\xe6\xf9\x8e\x4f" "\x3c\xd2\xaa\x55\xb3\xb6\xff\xfa\x20\xfd\xbf\xf3\x64\x19\xc8\x40\x06\xff" "\x3f\x0e\xae\xf4\x5f\x26\x21\x84\x10\x42\x08\x21\xc4\x9f\xed\xf2\x45\xff" "\xe5\xc7\x32\x5c\xc9\x82\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10" "\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21" "\x84\x10\x42\x08\x21\x84\x10\x42\x88\x34\xe8\x37\x5f\xfa\x95\x01\x00\xfe" "\x57\xbe\x4e\xec\x4a\xaf\x51\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08" "\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10" "\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21\x84\x10\x42\x08\x21" "\x84\xb8\xd2\xfe\x4f\x00\x00\x00\xff\xff\x8f\xf9\x32\x86", 5378); syz_mount_image( /*fs=*/0x20000000, /*dir=*/0x20000380, /*flags=MS_I_VERSION|MS_POSIXACL|MS_SYNCHRONOUS|MS_RELATIME|MS_NOSUID|0x800*/ 0xa10812, /*opts=*/0x20000040, /*chdir=*/0x21, /*size=*/0x1502, /*img=*/0x20002180); memcpy((void*)0x20000280, "/dev/loop#\000", 11); res = -1; res = syz_open_dev(/*dev=*/0x20000280, /*id=*/0, /*flags=*/0); if (res != -1) r[0] = res; memcpy((void*)0x20000080, "cgroup.stat\000", 12); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000080ul, /*flags=*/0x275a, /*mode=*/0); if (res != -1) r[1] = res; *(uint32_t*)0x200002c0 = r[1]; *(uint32_t*)0x200002c4 = 0; *(uint64_t*)0x200002c8 = 0x2a00; *(uint64_t*)0x200002d0 = 0x80010000; *(uint64_t*)0x200002d8 = 0; *(uint64_t*)0x200002e0 = 0; *(uint64_t*)0x200002e8 = 0; *(uint32_t*)0x200002f0 = 0; *(uint32_t*)0x200002f4 = 0; *(uint32_t*)0x200002f8 = 8; *(uint32_t*)0x200002fc = 0x1c; memcpy((void*)0x20000300, "\xfe\xe8\xa2\xab\x78\xfc\x17\x9f\xd1\xf8\xa0\xe9\x1d\xda\xac\xa7\xbd" "\x64\xc6\xa4\xb4\xe0\x0d\x96\x83\xdd\xa1\xaf\x1e\xa8\x9d\xe2\xb7\xfb" "\x0a\x01\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 64); memcpy((void*)0x20000340, "\x28\x09\xe8\xdb\xe1\x08\x59\x89\x48\x22\x4a\xd5\x4a\xfa\xc1\x1d\x87" "\x53\x97\xbd\xb2\x2d\x00\x00\xb4\x20\xa1\xa9\x3c\x52\x40\xf4\x5f\x81" "\x9e\x01\x17\x7d\x3d\x45\x8d\xd4\x99\x28\x61\xac\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 64); memcpy((void*)0x20000380, "\x90\xbe\x8b\x1c\x55\x12\x65\x40\x6c\x7f\x30\x60\x03\xd8\xa0\xf4\xbd" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 32); *(uint64_t*)0x200003a0 = 0; *(uint64_t*)0x200003a8 = 0; memset((void*)0x200003b0, 0, 64); syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4c0a, /*arg=*/0x200002c0ul); *(uint64_t*)0x20001300 = 0; *(uint64_t*)0x20001308 = 0; *(uint64_t*)0x20001310 = 0; *(uint64_t*)0x20001318 = 5; *(uint64_t*)0x20001320 = 0x7ff; *(uint32_t*)0x20001328 = 0; *(uint32_t*)0x2000132c = 0; *(uint32_t*)0x20001330 = 0; *(uint32_t*)0x20001334 = 0x1a; memcpy((void*)0x20001338, "\xeb\xbf\x52\x74\x8b\x0b\x2a\xff\x33\x0c\x21\x36\x7b\x06\x62\x4f\xde" "\x30\x88\x7f\xda\x17\x2e\xe2\x51\xca\x9d\xea\x03\xca\x09\x48\x80\x22" "\x55\x71\x64\x5c\xc0\x27\xcd\x4c\x7a\x81\x38\x8e\x08\xc0\xa4\xa8\x77" "\x31\x91\x41\x08\x48\xa8\x94\x10\xf3\x19\xbd\xe2\xed", 64); memcpy((void*)0x20001378, "\xc1\x10\x30\xf6\x99\x1c\x26\xeb\x66\x7e\x4d\x7f\xba\xeb\x5b\xe6\xd9" "\x58\xdf\x81\x11\x7f\x6c\xfe\x5e\x5b\xf3\xdc\x30\xbb\xfb\x71\x6d\x91" "\xad\x12\xa0\xc2\xb9\xcf\x2e\x15\xd1\x61\xe0\x1f\x42\x52\x60\xd3\x1c" "\x04\x07\x8e\x90\x7e\x24\x74\xfe\x96\x72\x9f\xd2\xa6", 64); memcpy((void*)0x200013b8, "\x0a\x8c\x8c\x37\xab\x0b\xce\xea\xe8\x3d\x73\xe2\x57\x04\x18\x4a\x6e" "\x89\x56\x2a\x71\x7a\x4a\xf0\x45\x7d\x7c\x04\x96\x06\x9c\x89", 32); *(uint64_t*)0x200013d8 = 0; *(uint64_t*)0x200013e0 = 0; syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4c04, /*arg=*/0x20001300ul); } 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; for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); loop(); } } sleep(1000000); return 0; }