// https://syzkaller.appspot.com/bug?id=9d5c2867cf62ffa5b099079467db2de0522fd597 // 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_ioctl #define __NR_ioctl 29 #endif #ifndef __NR_memfd_create #define __NR_memfd_create 279 #endif #ifndef __NR_mkdirat #define __NR_mkdirat 34 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_openat #define __NR_openat 56 #endif #ifndef __NR_setxattr #define __NR_setxattr 5 #endif static unsigned long long procid; static __thread int clone_ongoing; static __thread int skip_segv; static __thread jmp_buf segv_env; static void segv_handler(int sig, siginfo_t* info, void* ctx) { if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) { exit(sig); } uintptr_t addr = (uintptr_t)info->si_addr; const uintptr_t prog_start = 1 << 20; const uintptr_t prog_end = 100 << 20; int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0; int valid = addr < prog_start || addr > prog_end; if (skip && valid) { _longjmp(segv_env, 1); } exit(sig); } static void install_segv_handler(void) { struct sigaction sa; memset(&sa, 0, sizeof(sa)); sa.sa_handler = SIG_IGN; syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8); syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8); memset(&sa, 0, sizeof(sa)); sa.sa_sigaction = segv_handler; sa.sa_flags = SA_NODEFER | SA_SIGINFO; sigaction(SIGSEGV, &sa, NULL); sigaction(SIGBUS, &sa, NULL); } #define NONFAILING(...) \ ({ \ int ok = 1; \ __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \ if (_setjmp(segv_env) == 0) { \ __VA_ARGS__; \ } else \ ok = 0; \ __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \ ok; \ }) 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; 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)) { } NONFAILING(memcpy((void*)0x20000100, "ext4\000", 5)); NONFAILING(memcpy((void*)0x20000200, "./file1\000", 8)); NONFAILING(*(uint8_t*)0x20000280 = 0); NONFAILING(memcpy( (void*)0x200007c0, "\x78\x9c\xec\xdd\xdf\x6b\x5c\x59\x1d\x00\xf0\xef\xbd\xc9\x64\xd3\x36\x6b" "\x66\x55\x64\x5d\x70\x77\x71\x57\xd2\x45\x3b\x93\x6c\xdc\x6d\x10\x69\x2b" "\x88\x3e\x15\xd4\xfa\x1e\x63\x32\x09\x21\x93\x4c\xc8\x4c\x6a\x13\x8a\xa6" "\xf8\x07\x08\x22\x2a\xf8\xe4\x93\x2f\x82\x7f\x80\x20\xfd\x13\x44\x28\xe8" "\xbb\xa8\x28\xa2\xad\x3e\x6a\xaf\xcc\xcc\x8d\x36\xc9\x4c\x32\x35\x93\x4c" "\x77\xf2\xf9\xc0\xc9\x3d\xe7\xfe\xfa\x9e\x73\xc9\x9c\xb9\x77\xee\xe1\xde" "\x00\x2e\xac\x37\x23\xe2\x56\x44\x8c\x44\xc4\x3b\x11\x31\x99\xcf\x4f\xf3" "\x34\xdf\x2c\xec\xb5\xd7\x7b\xf2\xf8\xfe\x62\x33\x25\x91\x65\x77\xfe\x96" "\x44\x92\xcf\xdb\xdf\x57\xb3\x3c\x1a\x11\x57\xda\x9b\xc4\x78\x44\x7c\xed" "\xcb\x11\xdf\x4c\x8e\xc6\xad\xef\xec\xae\x2d\x54\xab\x95\xad\xbc\x5c\x6e" "\xac\x6f\x96\xeb\x3b\xbb\xd7\x56\xd7\x17\x56\x2a\x2b\x95\x8d\xd9\xd9\x99" "\xf7\xe7\xae\xcf\xbd\x37\x37\x9d\xe5\x4e\xd5\xce\x62\x44\xdc\xf8\xe2\x9f" "\x7e\xf8\xbd\x9f\x7d\xe9\xc6\xaf\x3e\xf3\xad\xdf\xcf\xff\xe5\xea\xb7\x9b" "\xd5\xfa\xfc\xc7\xda\xf5\x8e\x88\xc5\x53\x05\xe8\xa2\xbd\xef\x42\xeb\x58" "\xec\x6b\x1e\xa3\xad\xb3\x08\x36\x00\x23\x79\x7b\x0a\x23\x83\xae\x09\x00" "\x00\xbd\x68\x9e\xe3\x7f\x38\x22\x3e\xd9\x3a\xff\x9f\x8c\x91\xd6\xd9\x1c" "\x00\x00\x00\x30\x4c\xb2\x9b\x13\xf1\xaf\x24\x22\x03\x00\x00\x00\x86\x56" "\x1a\x11\x13\x91\xa4\xa5\x7c\x2c\xc0\x44\xa4\x69\xa9\xd4\x1e\xc3\xfb\xd1" "\xb8\x9c\x56\x6b\xf5\xc6\xa7\x97\x6b\xdb\x1b\x4b\xcd\x65\x11\xc5\x28\xa4" "\xcb\xab\xd5\xca\x74\x3e\x56\xb8\x18\x85\xa4\x59\x9e\xc9\xc7\xd8\xee\x97" "\xdf\x3d\x54\x9e\x8d\x88\x57\x22\xe2\x07\x93\x97\x5a\xe5\xd2\x62\xad\xba" "\x34\xe8\x1f\x3f\x00\x00\x00\xe0\x82\xb8\xf2\xc6\xc1\xeb\xff\x7f\x4e\xa6" "\xad\x3c\x00\x00\x00\x30\x64\x8a\x5d\x0b\x00\x00\x00\xc0\xb0\x70\xc9\x0f" "\x00\x00\x00\xc3\xcf\xf5\x3f\x00\x00\x00\x0c\xb5\xaf\xdc\xbe\xdd\x4c\xd9" "\xfe\x7b\xbc\x97\xee\xee\x6c\xaf\xd5\xee\x5e\x5b\xaa\xd4\xd7\x4a\xeb\xdb" "\x8b\xa5\xc5\xda\xd6\x66\x69\xa5\x56\x5b\x69\x3d\xb3\x6f\xfd\xa4\xfd\x55" "\x6b\xb5\xcd\xcf\xc6\xc6\xf6\xbd\x72\xa3\x52\x6f\x94\xeb\x3b\xbb\xf3\xeb" "\xb5\xed\x8d\xc6\xfc\xea\x81\x57\x60\x03\x00\x00\x00\xe7\xe8\x95\x37\x1e" "\xfe\x2e\x89\x88\xbd\xcf\x5d\x6a\xa5\xc8\x9f\x03\x08\x70\xc0\x1f\x07\x5d" "\x01\xa0\x9f\x46\x06\x5d\x01\x60\x60\x46\x07\x5d\x01\x60\x60\x0a\x27\xae" "\xa1\x87\x80\x61\x97\x9c\xb0\xbc\xeb\xe0\x9d\x5f\xf7\xbf\x2e\x00\x00\xc0" "\xd9\x98\xfa\xf8\xd1\xfb\xff\x63\xf9\xb2\x93\x7f\x1b\x00\x3e\xc8\x8c\xf5" "\x01\x80\x8b\xc7\xdd\x3d\xb8\xb8\x0a\x46\x00\xc2\x85\xf7\xa1\xf6\xe4\xa5" "\x6e\xcb\x4f\x7f\xff\x3f\xcb\x9e\xbb\x52\x00\x00\x40\x5f\x4d\xb4\x52\x92" "\x96\xf2\x7b\x81\x13\x91\xa6\xa5\x52\xc4\xcb\xad\xd7\x02\x14\x92\xe5\xd5" "\x6a\x65\x3a\xbf\x3e\xf8\xed\x64\xe1\xa5\x66\x79\xa6\xb5\x65\x72\xe2\x98" "\x61\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\xa0\x2d\xcb\x92\xc8\x00\x00\x00\x80\xa1\x16\x91\xfe\x39\x69\x3d" "\xcd\x3f\x62\x6a\xf2\xed\x89\x83\xbf\x0e\x1c\x7a\xeb\xd7\x4f\xee\xfc\xe8" "\xde\x42\xa3\xb1\x35\x13\x31\x96\xfc\x7d\xb2\x39\x6b\x2c\x22\x1a\x3f\xce" "\xe7\xbf\x9b\x79\x25\x00\x00\x00\x00\xbc\x00\xda\xd7\xe9\xf9\x74\x66\xd0" "\xb5\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\x60\xd8\x3c\x79\x7c\x7f\x71\x3f\x9d\x67\xdc\xbf\x7e\x21\x22\x8a" "\x9d\xe2\x8f\xc6\x78\x6b\x3a\x1e\x85\x88\xb8\xfc\x8f\x24\x46\x9f\xd9\x2e" "\x89\x88\x91\x3e\xc4\xdf\x7b\x10\x11\xaf\x76\x8a\x9f\xc4\xd3\x2c\xcb\x8a" "\x79\x2d\x3a\xc5\xbf\x74\xc6\xf1\x8b\xad\x43\xd3\x39\x7e\x1a\x11\x57\xfa" "\x10\x1f\x2e\xb2\x87\xcd\xfe\xe7\x56\xa7\xcf\x5f\x1a\x6f\xb6\xa6\x9d\x3f" "\x7f\xa3\x79\x3a\xad\xee\xfd\x5f\xfa\xdf\xfe\x6f\xa4\x4b\xff\xf3\x72\x8f" "\x31\x5e\x7b\xf4\x8b\x72\xd7\xf8\x0f\x22\x5e\x1b\xed\xdc\xff\xec\xc7\x4f" "\xda\xf1\x93\x38\x14\xff\xad\x1e\xe3\x7f\xe3\xeb\xbb\xbb\xdd\x96\x65\x3f" "\x8d\x98\xea\xf8\xfd\x93\x1c\x88\x55\x6e\xac\x6f\x96\xeb\x3b\xbb\xd7\x56" "\xd7\x17\x56\x2a\x2b\x95\x8d\xd9\xd9\x99\xf7\xe7\xae\xcf\xbd\x37\x37\x5d" "\x5e\x5e\xad\x56\xf2\xbf\x1d\x63\x7c\xff\x13\xbf\x7c\x7a\x5c\xfb\x2f\x77" "\x89\x5f\x3c\xd8\xfe\x23\xc7\xff\xed\x1e\xdb\xff\xef\x47\xf7\x1e\x7f\xa4" "\x9d\x2d\x74\x8a\x7f\xf5\xad\xce\xdf\xbf\xaf\x76\x89\x9f\xe6\xdf\x7d\x9f" "\xca\xf3\xcd\xe5\x53\xfb\xf9\xbd\x76\xfe\x59\xaf\xff\xfc\x37\xaf\x1f\xd7" "\xfe\xa5\x2e\xed\x1f\x3f\xa1\xfd\x57\x7b\x6c\xff\x3b\x5f\xfd\xee\x1f\x7a" "\x5c\x15\x00\x38\x07\xf5\x9d\xdd\xb5\x85\x6a\xb5\xb2\x75\x4c\x66\xbc\x87" "\x75\xce\x39\x73\xf3\xc5\xa8\x86\x4c\xbf\x32\xd9\x77\xda\xff\x8f\xa7\xdb" "\xcf\x29\x37\x3f\x92\xc9\x4e\xb3\xf9\x68\xf4\xa1\x1a\x63\xcf\xf1\x39\xed" "\x6f\x66\x90\xbd\x12\x00\x00\x70\x16\xfe\x77\xd2\x3f\xe8\x9a\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\xc5\xf5\x7f\x3e\x21" "\x6c\x3c\x22\x7a\x5e\xf9\x70\xcc\xbd\xc1\x34\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\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x58" "\xff\x09\x00\x00\xff\xff\x13\xbe\xd6\x1a", 1270)); NONFAILING(syz_mount_image( /*fs=*/0x20000100, /*dir=*/0x20000200, /*flags=MS_LAZYTIME*/ 0x2000000, /*opts=*/0x20000280, /*chdir=*/1, /*size=*/0x4f6, /*img=*/0x200007c0)); NONFAILING(memcpy((void*)0x200016c0, "./bus\000", 6)); NONFAILING(syz_mount_image(/*fs=*/0, /*dir=*/0x200016c0, /*flags=*/0, /*opts=*/0, /*chdir=*/0, /*size=*/0, /*img=*/0)); NONFAILING(memcpy((void*)0x20000040, "./bus/file0\000", 12)); syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x20000040ul, /*mode=*/0ul); NONFAILING(memcpy((void*)0x20000340, "./bus/file0\000", 12)); NONFAILING(memcpy((void*)0x20000400, "security.apparmor\000", 18)); NONFAILING(memcpy((void*)0x200003c0, "overlay\000", 8)); syscall(__NR_setxattr, /*path=*/0x20000340ul, /*name=*/0x20000400ul, /*val=*/0x200003c0ul, /*size=*/0xe407ul, /*flags=*/0ul); NONFAILING(memcpy((void*)0x20000280, "cgroup.controllers\000", 19)); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000280ul, /*flags=*/0x275a, /*mode=*/0); if (res != -1) r[0] = res; NONFAILING(memcpy((void*)0x200002c0, "cpuacct.usage_percpu_sys\000", 25)); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200002c0ul, /*flags=*/0x275a, /*mode=*/0); if (res != -1) r[1] = res; NONFAILING(*(uint32_t*)0x20001300 = 0x2880008); NONFAILING(*(uint32_t*)0x20001304 = r[0]); NONFAILING(*(uint64_t*)0x20001308 = 0); NONFAILING(*(uint64_t*)0x20001310 = 0); NONFAILING(*(uint64_t*)0x20001318 = 0); NONFAILING(*(uint64_t*)0x20001320 = 0); syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xc028660f, /*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; install_segv_handler(); use_temporary_dir(); loop(); return 0; }