// https://syzkaller.appspot.com/bug?id=70a12c89d398708fc4f2d9db0df8211ee5c1d72f // 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; 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[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; NONFAILING(memcpy((void*)0x20000280, "cgroup.controllers\000", 19)); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000280ul, /*flags=*/0x275aul, /*mode=*/0ul); if (res != -1) r[0] = res; NONFAILING(memcpy((void*)0x200001c0, "cpuset.effective_cpus\000", 22)); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200001c0ul, /*flags=*/0x275aul, /*mode=*/0ul); if (res != -1) r[1] = res; NONFAILING(*(uint32_t*)0x20000080 = 0); NONFAILING(*(uint32_t*)0x20000084 = r[0]); NONFAILING(*(uint64_t*)0x20000088 = 0); NONFAILING(*(uint64_t*)0x20000090 = 0); NONFAILING(*(uint64_t*)0x20000098 = 0); NONFAILING(*(uint64_t*)0x200000a0 = 0); syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xc028660f, /*arg=*/0x20000080ul); NONFAILING(memcpy((void*)0x200004c0, "ext4\000", 5)); NONFAILING(memcpy((void*)0x20000500, "./bus\000", 6)); NONFAILING(memcpy( (void*)0x20002400, "\x78\x9c\xec\xdd\x51\x4f\x5b\xd7\x1d\x00\xf0\xff\x35\x10\x08\x21\x81\x6c" "\x79\xd8\x26\x4d\xc9\xb6\x6c\xd9\x14\xc5\x06\x27\x41\x51\x9e\xb2\x97\x4d" "\x53\x14\x69\x5a\xb4\xa7\x3d\x24\x0c\x1c\x84\xb0\x31\xc2\x26\x0b\x2c\x0f" "\x44\xea\x47\xa8\xd4\x48\x7d\x6a\x3f\x42\x1f\x2a\xf5\xa1\x6a\x9e\xfa\xde" "\xb7\xf6\x03\xa4\x0f\x95\xd2\x36\x6a\x15\x2a\xf5\xc1\xd5\xbd\x36\x84\x10" "\x0c\xb4\x21\xb6\x8a\x7f\x3f\xe9\xe8\xde\x73\x8f\xf1\xff\x1c\xac\x7b\x8e" "\xf9\x03\x3e\x01\xf4\xac\x33\x11\xb1\x16\x11\x47\x22\xe2\x76\x44\x8c\xb6" "\xae\x27\xad\x12\xd7\x9a\x25\x7d\xdc\xb3\xa7\xf7\xa7\xd7\x9f\xde\x9f\x4e" "\xa2\xd1\xb8\xf9\x55\x92\xb5\xa7\xd7\x62\xcb\xd7\xa4\x8e\xb5\x9e\x73\x28" "\x22\xfe\xf5\xf7\x88\xff\x26\x2f\xc7\xad\xad\xac\xce\x4f\x95\xcb\xa5\xa5" "\x56\xbd\x50\xaf\x2c\x16\x6a\x2b\xab\x17\xe6\x2a\x53\xb3\xa5\xd9\xd2\x42" "\xb1\x38\x39\x31\x39\x7e\xe5\xe2\xe5\x62\xf3\x01\xb9\x57\x1f\xeb\xe9\xca" "\x7b\x4f\xfe\x36\x77\xfd\xdf\x1f\x7e\xf0\xdb\xc7\x9f\xac\xfd\xe5\xff\x69" "\xb7\x46\x5a\x6d\x5b\xc7\x71\x90\x9a\x43\x1f\xd8\x8c\x93\xea\x8f\x88\xeb" "\xaf\x23\x58\x17\xf4\xb5\xc6\x73\xa4\xdb\x1d\xe1\x27\x49\x6f\xab\x5f\x44" "\xc4\xef\xb3\xfb\x7f\x34\xfa\xb2\x57\x13\x00\x38\xcc\x1a\x8d\xd1\x68\x8c" "\x6e\xad\x03\x00\x87\x5d\x2e\xcb\x81\x25\xb9\x7c\x2b\x17\x30\x12\xb9\x5c" "\x3e\xdf\xcc\xe1\x9d\x8a\xe1\x5c\xb9\x5a\xab\x9f\xbf\x53\x5d\x5e\x98\x69" "\xe6\xca\xc6\x62\x20\x77\x67\xae\x5c\x1a\x6f\xe5\x0a\xc7\x62\x20\x49\xeb" "\x13\xd9\xf9\xf3\x7a\x71\x5b\xfd\x62\x44\x9c\x8c\x88\x37\x07\x8f\x66\xf5" "\xfc\x74\xb5\x3c\xd3\xcd\x37\x3e\x00\xd0\xc3\x8e\x6d\x5b\xff\xbf\x1d\x6c" "\xae\xff\x00\xc0\x21\x37\xd4\xed\x0e\x00\x00\x1d\x67\xfd\x07\x80\xde\x63" "\xfd\x07\x80\xde\x63\xfd\x07\x80\xde\x63\xfd\x07\x80\xde\x63\xfd\x07\x80" "\xde\x63\xfd\x07\x80\x9e\xf2\xcf\x1b\x37\xd2\xd2\x58\x6f\x7d\xfe\xf5\xcc" "\xdd\x95\xe5\xf9\xea\xdd\x0b\x33\xa5\xda\x7c\xbe\xb2\x3c\x9d\x9f\xae\x2e" "\x2d\xe6\x67\xab\xd5\xd9\xec\x33\x7b\x2a\x7b\x3d\x5f\xb9\x5a\x5d\x9c\xb8" "\x14\xcb\xf7\x0a\xf5\x52\xad\x5e\xa8\xad\xac\xde\xaa\x54\x97\x17\xea\xb7" "\xb2\xcf\xf5\xbe\x55\x1a\xe8\xc8\xa8\x00\x80\xdd\x9c\x3c\xfd\xe8\xb3\x24" "\x22\xd6\xae\x1e\xcd\x4a\x6c\xd9\xcb\xc1\x5a\x0d\x87\xdb\x01\x6c\xab\x03" "\xfc\x4c\xf5\x75\xbb\x03\x40\xd7\xd8\xed\x0b\x7a\x97\x9f\xf1\x81\x1d\xb6" "\xe8\x7d\x41\xdb\x3f\x11\x7a\x78\xf0\x7d\x01\x3a\xe3\xdc\xaf\xe5\xff\xa1" "\x57\xc9\xff\x43\xef\x92\xff\x87\xde\x25\xff\x0f\xbd\xab\xd1\x48\xec\xf9" "\x0f\x00\x3d\x46\x8e\x1f\xf0\xfb\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf8\xf1\x46" "\xb2\x92\xe4\xf2\xad\xbd\xc0\x47\x22\x97\xcb\xe7\x23\x8e\x47\xc4\x58\x0c" "\x24\x77\xe6\xca\xa5\xf1\x88\x38\x11\x11\x9f\x0e\x0e\x0c\xa6\xf5\x89\x6e" "\x77\x1a\x00\x78\x45\xb9\x2f\x92\xd6\xfe\x5f\xe7\x46\xcf\x8e\x6c\x6f\x3d" "\x92\x7c\x37\x98\x1d\x23\xe2\x7f\x6f\xdf\x7c\xeb\xde\x54\xbd\xbe\x34\x91" "\x5e\xff\x7a\xf3\x7a\xfd\x61\xeb\x7a\xb1\x1b\xfd\x07\x00\xf6\xb2\xb1\x4e" "\x6f\xac\xe3\x1b\x9e\x3d\xbd\x3f\xbd\x51\x3a\xd9\x9f\x27\x7f\x6d\x6e\x2e" "\x9a\xc6\x5d\x6f\x95\x66\x4b\x7f\xf4\x67\xc7\xa1\x18\x88\x88\xe1\x6f\x92" "\x56\xbd\x29\x7d\xbf\xd2\x77\x00\xf1\xd7\x1e\x44\xc4\xaf\x76\x1a\x7f\x92" "\xe5\x46\xc6\x5a\x3b\x9f\x6e\x8f\x9f\xc6\x3e\xde\xd1\xf8\xb9\x17\xe2\xe7" "\xb2\xb6\xe6\x31\xfd\x5e\xfc\xf2\x00\xfa\x02\xbd\xe6\x51\x3a\xff\x5c\xdb" "\xe9\xfe\xcb\xc5\x99\xec\xb8\xf3\xfd\x3f\x94\xcd\x50\xaf\x6e\x63\xfe\x5b" "\x7f\x69\xfe\xcb\x6d\xce\x7f\x7d\x6d\xe6\xbf\x33\xfb\x8d\x71\xe9\xe3\x7f" "\xb4\x6d\x7b\x10\xf1\x9b\xfe\x9d\xe2\x27\x9b\xf1\x93\x36\xf1\xcf\xee\x33" "\x7e\xfe\xa3\x37\xfe\xd8\xae\xad\xf1\x4e\xc4\xb9\xd8\x39\xfe\xd6\x58\x85" "\x7a\x65\xb1\x50\x5b\x59\xbd\x30\x57\x99\x9a\x2d\xcd\x96\x16\x8a\xc5\xc9" "\x89\xc9\xf1\x2b\x17\x2f\x17\x0b\x59\x8e\xba\xb0\x91\xa9\x7e\xd9\x97\x57" "\xcf\x9f\xd8\x6d\xfc\xc3\x6d\xe2\x0f\xed\x31\xfe\xb6\x83\xda\xe6\xdd\xef" "\x6f\xff\xe7\x77\xbb\xc4\xff\xf3\x1f\x76\x7e\xfd\x4f\xed\x12\x3f\x5d\x13" "\xff\xb4\xcf\xf8\x53\xc3\xef\xb7\xdd\xbe\x3b\x8d\x3f\xd3\x66\xfc\x7b\xbd" "\xfe\xe7\xf7\x19\xff\xf1\xe7\xab\x33\xfb\x7c\x28\x00\xd0\x01\xb5\x95\xd5" "\xf9\xa9\x72\xb9\xb4\xe4\xa4\x53\x27\xe9\x5b\xb7\xd7\x19\xe2\x41\xb7\x07" "\xe8\xe4\x30\x9c\x74\x7b\x66\x02\x5e\xb7\xe7\x37\x7d\xb7\x7b\x02\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb4\xd3\x89\x7f\x27\xea\xf6\x18\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x38\xbc\x7e\x08\x00\x00\xff\xff\x21\x9e\xd7\xff", 1205)); NONFAILING(syz_mount_image(/*fs=*/0x200004c0, /*dir=*/0x20000500, /*flags=*/0, /*opts=*/0x20000180, /*chdir=*/0x21, /*size=*/0x4b5, /*img=*/0x20002400)); 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\023", 8)); syscall(__NR_setxattr, /*path=*/0x20000340ul, /*name=*/0x20000400ul, /*val=*/0x200003c0ul, /*size=*/0xe407ul, /*flags=*/0ul); } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); install_segv_handler(); use_temporary_dir(); loop(); return 0; }