// https://syzkaller.appspot.com/bug?id=68fcdffe468c5415c89a9651c21e0b9210326b85 // 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_getegid #define __NR_getegid 177 #endif #ifndef __NR_ioctl #define __NR_ioctl 29 #endif #ifndef __NR_memfd_create #define __NR_memfd_create 279 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_openat #define __NR_openat 56 #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; } //% 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: while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW)) 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, MNT_DETACH | UMOUNT_NOFOLLOW)) 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; res = syscall(__NR_getegid); if (res != -1) r[0] = res; memcpy((void*)0x20000040, "ext4\000", 5); memcpy((void*)0x20000500, "./file1\000", 8); memcpy((void*)0x20000300, "nobarrier,grpquota,resgid=", 26); sprintf((char*)0x2000031a, "0x%016llx", (long long)r[0]); memcpy( (void*)0x2000032c, "\x2c\x6e\x6f\x6c\x61\x7a\x79\x74\x69\x6d\x65\x2c\x6e\x6f\x71\x75\x6f\x74" "\x61\x2c\x00\x00\x00\x00\x00\x00\x00\x42\x74\x61\x62\x52\x65\x2c\x69\x6e" "\x6f\x64\x65\x5f\x72\x65\x61\x64\x61\x68\x65\x61\x64\x5f\x62\x6c\x6b\x73" "\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x31\x30\x30\x30\x30" "\x30\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72\x71\x75\x6f\x74\x61" "\x2c\x00\x97\x83\xf7\x73\xce\x6b\xa8\x5a\x7c\x57\xbf\x50\x23\x8e\xb6\x03" "\x76\x14\x9a\x2d\xab\xb3\x6e\xf5\xfa\xc8\x5e\xab\x53\xf6", 122); memcpy( (void*)0x20000a00, "\x78\x9c\xec\xdd\xdf\x6b\x1c\x5b\x1d\x00\xf0\xef\x4c\xb2\xd7\xfe\xc8\x35" "\x7b\xd5\x87\xeb\x05\xaf\x17\xef\x95\xa4\x68\x77\x93\xc6\xb6\xc1\x87\x5a" "\x41\xf4\xa9\xa0\xd6\xf7\x18\x93\x4d\x08\xd9\x64\x43\x76\xd3\x36\xa1\x68" "\x8a\x7f\x80\x20\xa2\x82\x4f\x3e\xf9\x22\xf8\x07\x08\xd2\x3f\x41\x84\x82" "\xbe\x8b\x8a\x22\xda\xea\x83\x0f\xda\x91\x9d\x9d\xad\x6d\xba\xdb\x44\xba" "\xcd\x94\xe4\xf3\x81\xd3\x3d\x67\x66\x77\xbf\xdf\xb3\xcd\x9e\xdd\x33\x73" "\x98\x0d\xe0\xd4\x7a\x2f\x22\xae\x47\xc4\x58\x44\x5c\x88\x88\xc9\x62\x7b" "\x5a\x94\x85\x6e\x63\xbf\x77\xbf\x47\x0f\xef\x2e\x75\x4b\x12\x59\x76\xf3" "\x6f\x49\x24\xc5\xb6\xfe\x73\x75\xdb\xe3\x11\x71\xbe\xf7\x90\x38\x13\x11" "\x5f\xff\x4a\xc4\xb7\x92\xe7\xe3\xb6\x77\xf7\xd6\x17\x9b\xcd\xc6\x76\xd1" "\xae\x77\x36\xb6\xea\xed\xdd\xbd\x8b\x6b\x1b\x8b\xab\x8d\xd5\xc6\xe6\xdc" "\xdc\xec\x95\xf9\xab\xf3\x97\xe7\x67\xb2\xc2\x4b\xf5\xb3\x1a\x11\xd7\xbe" "\xf4\xa7\x1f\x7e\xef\x67\x5f\xbe\xf6\xab\xcf\xde\xfe\xfd\xc2\x5f\xa6\xbf" "\xdd\x4d\x6b\xa2\xd8\xff\x74\x3f\x46\xa9\xd7\xf5\x4a\xfe\x5a\xf4\x75\x5f" "\xa3\xed\x57\x11\xac\x04\x63\x45\x7f\x2a\x65\x27\x02\x00\xc0\x91\x4c\x47" "\xc4\x47\x22\xe2\x53\xf9\xf7\xff\xc9\x18\xcb\xbf\xcd\x01\x00\x00\x00\x27" "\x49\xf6\x85\x89\xf8\x77\x12\x91\x01\x00\x00\x00\x27\x56\x9a\xaf\x81\x4d" "\xd2\x5a\xb1\xde\x77\x22\xd2\xb4\x56\xeb\xad\xe1\xfd\x58\x9c\x4b\x9b\xad" "\x76\xe7\x33\x2b\xad\x9d\xcd\xe5\xde\x5a\xd9\x6a\x54\xd2\x95\xb5\x66\x63" "\xa6\x58\x2b\x5c\x8d\x4a\xd2\x6d\xcf\x16\x6b\x6c\xfb\xed\x4b\x07\xda\x73" "\x11\xf1\x56\x44\xfc\x60\xf2\x6c\xde\xae\x2d\xb5\x9a\xcb\x65\x1f\xfc\x00" "\x00\x00\x80\x53\xe2\xfc\x81\xf9\xff\x3f\x27\xd3\xbc\x0e\x00\x00\x00\x9c" "\x30\xd5\xb2\x13\x00\x00\x00\x00\x5e\x39\xf3\x7f\x00\x00\x00\x38\xf9\xcc" "\xff\x01\x00\x00\xe0\x44\xfb\xea\x8d\x1b\xdd\x92\xf5\x7f\xff\x7a\xf9\xd6" "\xee\xce\x7a\xeb\xd6\xc5\xe5\x46\x7b\xbd\xb6\xb1\xb3\x54\x5b\x6a\x6d\x6f" "\xd5\x56\x5b\xad\xd5\xfc\x9a\x7d\x1b\x87\x3d\x5f\xb3\xd5\xda\xfa\x5c\x6c" "\xee\xdc\xa9\x77\x1a\xed\x4e\xbd\xbd\xbb\xb7\xb0\xd1\xda\xd9\xec\x2c\xac" "\x3d\xf3\x13\xd8\x00\x00\x00\xc0\x31\x7a\xeb\x93\xf7\x7f\x97\x44\xc4\xfe" "\xe7\xcf\xe6\xa5\x2b\x29\x3b\x29\xe0\xf5\xf3\xc7\xb2\x13\x00\x46\x69\xac" "\xec\x04\x80\xd2\x8c\x97\x9d\x00\x50\x9a\x4a\xd9\x09\x00\xa5\x3b\xec\x98" "\xdf\xd0\xc5\x3b\xbf\x1e\x7d\x2e\x00\x00\xc0\xab\x31\xf5\xf1\xe7\xcf\xff" "\xbf\x51\xec\x73\x6c\x00\x4e\xb6\xb4\xec\x04\x00\x80\x63\xe7\xfc\x3f\x9c" "\x5e\x15\x2b\x00\xe1\xd4\xfb\xf0\x21\xfb\x5f\xfe\xfc\x7f\x96\xfd\x5f\x09" "\x01\x00\x00\x23\x37\x91\x97\x24\xad\x15\xe7\x02\x27\x22\x4d\x6b\xb5\x88" "\x37\xf3\x9f\x05\xa8\x24\x2b\x6b\xcd\xc6\x4c\x31\x3f\xf8\xed\x64\xe5\x43" "\xdd\xf6\x6c\xfe\xc8\xc4\x75\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x88\xb2\x2c\x89\x0c\x00\x00\x00" "\x38\xd1\x22\xd2\x3f\x27\xf9\xd5\xfc\x23\xa6\x26\x3f\x98\x38\x78\x7c\xe0" "\x8d\xe4\x5f\x93\xf9\x6d\x44\xdc\xfe\xc9\xcd\x1f\xdd\x59\xec\x74\xb6\x67" "\xbb\xdb\xff\xfe\x64\x7b\xe7\xc7\xc5\xf6\x4b\x65\x1c\xc1\x00\x00\x00\x00" "\x0e\xea\xcf\xd3\xfb\xf3\x78\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x18\xa5\x47\x0f\xef\x2e\xf5\xcb\x71\xc6" "\xfd\xeb\x17\x23\xa2\x3a\x28\xfe\x78\x9c\xc9\x6f\xcf\x44\x25\x22\xce\xfd" "\x23\x89\xf1\xa7\x1e\x97\x44\xc4\xd8\x08\xe2\xef\xdf\xcb\x43\x0d\x88\x9f" "\xc4\xe3\x2c\xcb\xaa\x45\x16\x83\xe2\x9f\x1d\x55\xfc\xb7\x07\xc7\xaf\xe6" "\x2f\xcd\xe0\xf8\x69\x44\x9c\x1f\x41\x7c\x38\xcd\xee\x77\xc7\x9f\xeb\x83" "\xde\x7f\x69\xbc\x97\xdf\x0e\x7e\xff\x8d\x17\xe5\x65\x0d\x1f\xff\xd2\x27" "\xe3\xdf\xd8\x90\xf1\xe7\xcd\x23\xc6\x78\xe7\xc1\x2f\xea\x43\xe3\xdf\x8b" "\x78\x67\xc8\xf8\xd7\x8f\x9f\x0c\x89\xff\xfe\x11\xe3\x7f\xf3\x1b\x7b\x7b" "\xc3\xf6\x65\x3f\x8d\x98\x1a\xf8\xf9\x93\x3c\x13\xab\xde\xd9\xd8\xaa\xb7" "\x77\xf7\x2e\xae\x6d\x2c\xae\x36\x56\x1b\x9b\x73\x73\xb3\x57\xe6\xaf\xce" "\x5f\x9e\x9f\xa9\xaf\xac\x35\x1b\xc5\xbf\x03\x63\x7c\xff\x13\xbf\x7c\xfc" "\xa2\xfe\x9f\x1b\x12\xbf\x7a\x48\xff\x3f\x38\x62\xff\xff\xf3\xe0\xce\xc3" "\x8f\xf6\xaa\x95\x41\xf1\xa7\xdf\x1f\xfc\xf9\xfb\xf6\x90\xf8\x69\xf1\xd9" "\xf7\xe9\xa2\xde\xdd\x3f\xd5\xaf\xef\xf7\xea\x4f\x7b\xf7\xe7\xbf\x79\xf7" "\x45\xfd\x5f\x1e\xd2\xff\xc3\xfe\xff\xa7\x8f\xd8\xff\x0b\x5f\xfb\xee\x1f" "\x8e\x78\x57\x00\xe0\x18\xb4\x77\xf7\xd6\x17\x9b\xcd\xc6\xb6\x8a\x4a\x89" "\x95\xec\x3b\xbd\xbf\xc7\xd7\x25\x9f\x5e\x25\x7b\x3d\xd2\x28\xa5\x52\xf6" "\xc8\x04\x00\x00\x8c\xda\xff\xbe\xf4\x97\x9d\x09\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9c\x5e\xc7\x71\x39\xb1\x83\x31\xf7" "\xcb\xe9\x2a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\xc0\x0b\xfd\x37\x00\x00\xff\xff\xac\x13\xdf" "\x70", 1225); syz_mount_image( /*fs=*/0x20000040, /*dir=*/0x20000500, /*flags=MS_LAZYTIME|MS_SYNCHRONOUS|MS_SILENT|MS_RDONLY|MS_NOSUID|0xa0c*/ 0x2008a1f, /*opts=*/0x20000300, /*chdir=*/1, /*size=*/0x4c6, /*img=*/0x20000a00); res = syscall(__NR_getegid); if (res != -1) r[1] = res; memcpy((void*)0x20000100, "ext4\000", 5); memcpy((void*)0x20000080, "./file1\000", 8); *(uint32_t*)0x20000900 = r[1]; sprintf((char*)0x20000904, "0x%016llx", (long long)-1); *(uint8_t*)0x20000916 = r[1]; memcpy((void*)0x20000917, "\xf3\xa6\xb9\x22\xde\x88\x10\x84\xc3\xfd\x41\x2c\xf5\x9e\xb7\xf7\x76" "\x32\xdc\x66\x55\x20\x42\x17\xa6\x7f\x8b\xf0\xad\x90\x75\x6b\xf3\x4f" "\xbd\x6c\x49\xbb\x91\x32\xd5\x19\x35\xbb\x19\x36\xae\x17\x8b\x0c\xf9" "\xf1\xdb\x2c\xe1\x6b\xfb\xdf\x8a\xb6\xb6\xde\xea\x00\x00\x00\xee\x3b" "\xf7\x57\xac\xa9\x10\x9a\x34\xff\x5d\xc5\x4f\xdc\xaa\x6a\x30\xfb\x0a" "\x57\x96\xd9\x03\x20\x32\x9f\xe6\xe0\xde\x39\x53\x68\x72\xcd\xbd\xd5" "\xf5\xf3\x83\x1c\xe9\xaf\xe3\x77\x3b\xde\x25\x9f\x33\xb8\x07\x26\x11", 119); sprintf((char*)0x2000098e, "0x%016llx", (long long)-1); memcpy( (void*)0x20000300, "\x78\x9c\xec\xdd\x41\x6f\x23\x57\x1d\x00\xf0\xff\x8c\xe3\x6d\x76\x37\xc5" "\x2e\x20\x04\x95\x28\x15\x2d\xda\xad\x60\xed\xa4\xa1\x6d\x84\x10\x94\x0b" "\x9c\x2a\x01\xe5\x1e\x42\xe2\x44\x51\xec\x38\x8a\x9d\xb2\x89\x2a\xc8\x8a" "\x6f\x80\x90\x40\xe2\xc4\x89\x0b\x12\x1f\x00\x09\xf5\xc0\x07\x40\x95\x2a" "\xc1\x05\x71\x40\x80\x40\x08\xb6\x70\x40\x02\x3a\xc8\xf6\xb8\xcd\x3a\x76" "\x12\x6d\x13\x3b\x1b\xff\x7e\xd2\x5b\xbf\xf7\x3c\x33\xff\xf7\x66\xe5\xe7" "\x99\xf1\xcb\x4c\x00\x53\xeb\xe9\x88\x78\x39\x22\x0a\x11\xf1\x5c\x44\x94" "\xf2\xfa\x34\x4f\xcb\x9d\xc2\x61\x6f\xb9\xb7\xef\xbf\xbe\xda\x49\x49\x64" "\xd9\xab\x7f\x4f\x22\xc9\xeb\xfa\xdb\xea\x94\x67\x22\xe2\x66\x6f\x95\x98" "\x8d\x88\xaf\x7f\x25\xe2\x5b\xc9\xf1\xb8\xad\xfd\x83\xad\x95\x7a\xbd\xb6" "\x9b\x97\xab\xed\xc6\x4e\xb5\xb5\x7f\x70\x67\xb3\xb1\xb2\x51\xdb\xa8\x6d" "\x2f\x2e\x2e\xbc\xb8\xf4\xd2\xd2\x0b\x4b\xf3\x59\xee\x7d\xf5\xb3\xdc\xcf" "\xfc\xf4\xcb\x5f\xb8\xf6\x99\x6f\xff\x61\xf9\xaf\xb7\xbf\xd3\x69\xd6\xe7" "\x3f\x12\xc5\x18\xe8\xc7\x79\xea\x75\xbd\xd8\xdd\x17\x7d\x9d\x7d\xb4\x7b" "\x11\xc1\x26\xa0\x90\xf7\xa7\x38\xe9\x86\x00\x00\x70\x26\x9d\x63\xfc\x0f" "\x46\xc4\x27\xbb\xc7\xff\xa5\x28\x74\x8f\xe6\x06\x14\x26\xd1\x32\x00\x00" "\x00\xe0\xbc\x64\x5f\x9c\x8b\xff\x26\x11\x19\x00\x00\x00\x70\x65\xa5\x11" "\x31\x17\x49\x5a\xc9\xe7\x02\xcc\x45\x9a\x5e\xcb\xaf\x0d\x7c\x38\x6e\xa4" "\xf5\x66\xab\xfd\xe9\xf5\xe6\xde\xf6\x5a\xe7\xbd\x88\x72\x14\xd3\xf5\xcd" "\x7a\x6d\x3e\x9f\x2b\x5c\x8e\x62\xd2\x29\x2f\xe4\x73\x6c\xfb\xe5\xe7\x07" "\xca\x8b\x11\xf1\x44\x44\xfc\xa0\x74\xbd\x5b\xae\xac\x36\xeb\x6b\x13\xbe" "\xf6\x01\x00\x00\x00\xd3\xe2\xe6\xc0\xf9\xff\xbf\x4a\x69\x37\x7f\xba\x21" "\x7f\x27\x00\x00\x00\x00\x5c\x5e\xe5\x91\x05\x00\x00\x00\xe0\xaa\x70\xca" "\x0f\x00\x00\x00\x57\xdf\xe0\xf9\xff\x2f\x27\xd4\x0e\x00\x00\x00\xe0\x42" "\x7c\xf5\x95\x57\x3a\x29\xeb\x3f\xff\x7a\xed\xb5\xfd\xbd\xad\xe6\x6b\x77" "\xd6\x6a\xad\xad\x4a\x63\x6f\xb5\xb2\xda\xdc\xdd\xa9\x6c\x34\x9b\x1b\xdd" "\x7b\xf6\x35\x4e\xdb\x5e\xbd\xd9\xdc\xf9\x6c\x6c\xef\xdd\xad\xb6\x6b\xad" "\x76\xb5\xb5\x7f\xb0\xdc\x68\xee\x6d\xb7\x97\x37\x1f\x78\x04\x36\x00\x00" "\x00\x30\x46\x4f\x7c\xe2\x8d\xdf\x26\x11\x71\xf8\xb9\xeb\xdd\x14\xf9\x7d" "\x00\x01\x1e\xf0\xa7\x49\x37\x00\x38\x4f\x85\x87\x5c\xef\xde\x39\xb7\x03" "\x18\x3f\x77\xf1\x86\xe9\x55\x9c\x74\x03\x80\x89\x4b\x4e\x79\xdf\xe4\x1d" "\x00\x00\x78\xf4\xdd\xfa\xd8\xf1\xdf\xff\xfb\xcf\xff\x77\x6d\x00\xae\x36" "\x73\x7d\x00\x60\xfa\xf8\xfd\x1f\xa6\x57\xf1\xa1\x67\x00\x02\x57\x41\x1a" "\x11\x1f\xe8\x65\x1f\x1b\xb5\xcc\xc8\xdf\xff\x7f\x7d\xd6\x28\x59\x16\xf1" "\x66\xe9\x68\x8d\xeb\x8b\x00\x00\x30\x5e\x73\xdd\x94\xa4\x95\xfc\x3c\x60" "\x2e\xd2\xb4\x52\x89\x78\x3c\x22\x2d\x47\x31\x59\xdf\xac\xd7\xe6\xf3\xf3" "\x83\xdf\x94\x8a\x8f\x75\xca\x0b\xdd\x35\x93\x53\xe7\x0c\x03\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3d\x59" "\x96\x44\x06\x00\x00\x00\x5c\x69\x11\xe9\x5f\x92\xee\xdd\xfc\x23\x6e\x95" "\x9e\x9d\x1b\xbc\x3e\x70\x2d\xf9\x77\x29\xfe\x9c\x17\x7e\xfc\xea\x0f\xef" "\xae\xb4\xdb\xbb\x0b\x9d\xfa\x7f\x74\x9f\xe5\x75\x2d\x22\xda\x3f\xca\xeb" "\x9f\x1f\xf9\xf8\x30\x00\x00\x00\xe0\xbc\x25\x87\x23\xdf\xea\x9d\xa7\xe7" "\xaf\x0b\x63\x6d\x15\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x53\xe0\xed\xfb\xaf\xaf\xf6\xd3\x38\xe3\xfe\xed" "\x4b\x11\x51\x1e\x16\x7f\x26\x66\xbb\xaf\xb3\x51\x8c\x88\x1b\xff\x4c\x62" "\xe6\xc8\x7a\x49\x44\x14\xce\x21\xfe\xe1\xbd\x88\xf8\xe8\xb0\xf8\x49\xbc" "\x93\x65\x49\x39\x6f\xc5\xb0\xf8\xd7\x2f\x38\x7e\xb9\xbb\x6b\x86\xc7\x4f" "\x23\xe2\xe6\x39\xc4\x87\x69\xf6\x46\x67\xfc\x79\x79\xd8\xe7\x2f\x8d\xa7" "\xbb\xaf\xc3\x3f\x7f\x33\x79\x7a\xbf\x46\x8f\x7f\xe9\xbb\xe3\x5f\x61\xc4" "\xf8\xf3\xf8\xb1\xad\x35\x86\xc6\x78\xf2\xad\x9f\x57\x47\xc6\xbf\x17\xf1" "\xe4\xcc\xf0\xf1\xa7\x1f\x3f\x19\x11\xff\x99\x63\x5b\xfb\x4f\x96\x65\xc7" "\x63\x7c\xf3\x1b\x07\x07\xa3\xe2\x67\x3f\x89\xb8\x35\xf4\xfb\x27\x79\x20" "\x56\xb5\xdd\xd8\xa9\xb6\xf6\x0f\xee\x6c\x36\x56\x36\x6a\x1b\xb5\xed\xc5" "\xc5\x85\x17\x97\x5e\x5a\x7a\x61\x69\xbe\xba\xbe\x59\xaf\xe5\xff\x0e\x8d" "\xf1\xfd\x8f\xff\xe2\x9d\x93\xfa\x7f\x63\x48\xfc\xdf\xff\xae\x37\xfe\x9e" "\xd4\xff\x67\x47\x6d\x74\xc0\xff\xde\xba\x7b\xff\x43\xbd\x6c\x71\x58\xfc" "\xdb\xcf\x0c\xfd\xfe\x9d\x8d\xc1\xf8\xdf\xed\xd5\xa4\xf9\x77\xdf\xa7\xf2" "\x7c\xe7\xfd\x5b\xfd\xfc\x61\x2f\x7f\xd4\x53\x3f\x7b\xf3\xa9\x93\xfa\xbf" "\x36\x62\xff\x9f\xf6\xff\x7f\xfb\x8c\xfd\x7f\xee\x6b\xdf\xfb\xe3\x19\x17" "\x05\x00\xc6\xa0\xb5\x7f\xb0\xb5\x52\xaf\xd7\x76\x4f\xc8\xcc\x9e\x61\x99" "\x47\x31\xf3\xab\xd9\x0b\xd8\x72\x1c\xf6\x76\xec\x85\x35\x3e\xcb\x8f\x02" "\x2f\xc7\x3e\x7c\xf8\x4c\xe7\x68\xf5\xbd\x9a\x7e\xaf\x2e\x41\xc3\x8e\x64" "\xb2\xb1\xc5\x2a\xc4\x25\xe9\xf2\xbb\x99\xc9\x8d\x49\x00\x00\xc0\xc5\x78" "\xef\xa0\x7f\xd2\x2d\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x80\xe9\x35\x8e\xdb\x89\x0d\xc6\x3c\x9c\x4c\x57\x01\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x4e\xf4\xff\x00\x00\x00\xff\xff\xd0\xdf\xdc\x2f", 1309); syz_mount_image(/*fs=*/0x20000100, /*dir=*/0x20000080, /*flags=MS_LAZYTIME|MS_SYNCHRONOUS|MS_STRICTATIME*/ 0x3000010, /*opts=*/0x20000900, /*chdir=*/1, /*size=*/0x51d, /*img=*/0x20000300); memcpy((void*)0x20001c00, "blkio.bfq.io_serviced_recursive\000", 32); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20001c00ul, /*flags=*/0x275aul, /*mode=*/0ul); if (res != -1) r[2] = res; syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x6611, /*arg=*/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); use_temporary_dir(); loop(); return 0; }