// 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_dup3 #define __NR_dup3 24 #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 #ifndef __NR_setxattr #define __NR_setxattr 5 #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[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; memcpy((void*)0x20000440, "ext4\000", 5); memcpy((void*)0x20000100, "./file1\000", 8); memcpy( (void*)0x200002c0, "\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\x30\x30\x30" "\x30\x30\x30\x2c\x62\x6c\x6f\x63\x6b\x5f\x76\x61\x6c\x69\x64\x69\x74\x79" "\x2c\x64\x65\x62\x75\x67\x5f\x77\x61\x6e\x74\x5f\x65\x78\x74\x72\x61\x5f" "\x69\x73\x69\x7a\x65\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30" "\x30\x30\x30\x30\x36\x36\x2c\x6e\x6f\x6d\x62\x63\x61\x63\x68\x65\x2c\x6d" "\x61\x78\x5f\x62\x61\x74\x63\x68\x5f\x74\x69\x6d\x65\x3d\x30\x78\x30\x30" "\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x38\x2c\x6e\x6f\x6d" "\x62\x63\x61\x63\x68\x65\x2c\x00\xc1\xb1\xe9\x09\x00\xd9\xd7\xe0\xd2\xb5" "\xfb\x78\xf6\xb8\x65\xdc\x98\xea\x6e\x8e\x72\xe5\xf9\xf8\x06\x13\x08\xbd" "\xa6\x20\xdc\x19\xfc\x79\xf6\xb0\x45\xd5\xa4\x78\xb2\x6a\x4d\xbb\x01\x75" "\x0b\x8b\x52\x73\x13\x53\x0d\x9f\xf5\x20\xa6\x9a\xe1\xc1\x0b\xf9\xfd\x3b" "\x1b\x9e\x24\x6e\x3c\x97\x90\xe4\x8c\x95\x61\x9d\x32\xea\xf4\xc1\x76\xd0" "\x2c\x99\x0e\x3d\xbb\x15\xac\x49\x65\x96\x70\xdc\x1f\x4a\x7f\x79\x59\xea" "\x44\x43\xa4\x11\xe9\x11\x81\x1a\xd3\x94\x56\x3d\x12\xba\xb3\xcb\x76\xc0" "\xe6\x32\x45\x9f\x5d\x9d\xb6\xf5\x19\x92\xa5\xa4\x05\xba\xcd\x22\xcf\xe7" "\x01\x03\xed\x11\x97\x2c\x66\xb0\x80\x78\xbd\xe3\xa8\x4e\x1b\xda\xed\x78" "\x7b\xdc\xed\xed\x01\xfb\x37\xb7\x1d\x41\x81\x9f\x5c\x73\x6e\x2d\x79\x8c" "\xb2\x4d\x5f\xa8\x0e\x0d\x2b\x51\xb3\xc8\xb3\xa3\x7e\xfa\x3f\x62\x02\xc4" "\xa7\x7e\xb2\xbd\x30\x84\xa9\x2e\xbf\xe8\x73\x3c\x11\x7c\x82\xc6\xd4\xeb" "\xd0\x9b\xc9\xae\xa7\xf9\x44\x43\xcf\x0c\xfa\xf1\xbe\x71\x77\xe5", 376); 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syz_mount_image(/*fs=*/0x20000440, /*dir=*/0x20000100, /*flags=*/0, /*opts=*/0x200002c0, /*chdir=*/0, /*size=*/0x421, /*img=*/0x20000900); memcpy((void*)0x20000200, "./file1\000", 8); memcpy((void*)0x20003180, "user.incfs.metadata\000", 20); memcpy( (void*)0x200031c0, "\x16\xee\x88\x96\x15\xe6\x28\xb8\x96\x49\x82\x30\xe9\x0f\xc5\x74\x7a\x4f" "\x11\xd8\x0e\x12\xbe\xcf\x22\xb8\xec\x25\xf3\xb5\x8f\x75\x09\x5f\xed\x7e" "\x65\x03\x75\x77\x17\x83\x36\x71\x5f\xb4\x5e\x6b\x4e\xd7\x1a\xc2\xb2\x7c" "\x2e\x36\xbc\x83\x6b\x70\xf3\xf6\x50\xc4\xfd\x27\xe6\xf4\xbf\x38\xd0\xc8" "\xbe\x32\xe2\x8f\xb5\x49\x6a\x9a\x31\xa6\xcc\x5f\x7b\x50\x1f\xce\x16\xaa" "\x4f\x67\x08\x57\x9f\xc8\x60\xf5\x79\xf7\x61\x1f\x0b\x61\xfa\xdb\xa1\x85" "\xeb\x11\x50\x47\x01\x42\x4a\x33\xf6\xe6\xa9\x2c\x9a\x47\x7e\x12\xb7\xea" "\xb0\xb7\xa6\x1c\x09\x2b\x83\xbd\x26\x3c\x6a\x8a\x11\x48\xc3\xdd\x7c\x41" "\x51\xfc\xbc\xa0\x1a\xd2\x14\x35\x73\x60\xc1\xc9\x34\x61\xf1\xf5\x08\x12" "\x59\xf0\x60\x65\x7b\x05\xa0\x4e\xff\xb6\x72\x96\x17\x8e\x34\xc0\x8b\x98" "\x29\x05\x9c\x88\xcb\x9d\x7b\x49\x38\x9d\x9c\xaf\x38\x22\xf3\xb3\x0f\x67" "\x7c\xa2\x31\xcc\x63\x58\x17\x1f\xa0\xd5\xff\x96\xc8\x4b\x05\x50\x67\x12" "\xee\x37\x9f\x95\xa7\x6b\x77\x30\x89\x97\x59\x48\xe1\x1f\x79\x13\xe1\xd9" "\x39\xf0\x9a\x84\x02\xa0\x69\x90\x5f\x89\x8a\x31\x69\x30\xef\xeb\xd7\x0f" "\x67\x0f\xb2\xb1\x13\xb3\x93\x8e\x33\x42\xc1\xef\x87\xb6\xcd\xbd\xa1\xa4" "\xa5\x45\x48\x7a\xc7\xb9\xc5\xf3\x00\x34\xf8\x5a\xc8\xa2\x00\xa2\x23\x2e" "\xc7\xca\x25\x8c\x26\x53\x44\x70\xfb\xf7\x12\x09\x0f\x75\xbc\x34\x7c\xae" "\x89\x49\x61\xa8\xa2\x24\x5a\xc1\x13\x10\xfb\xd6\x09\x4c\x27\xcd\xb5\x17" "\x22\xc8\x6e\x7a\xad\xc8\xb9\xd6\x65\x77\x93\x75\xed\xb2\x42\xa2\x89\xd2" "\x30\x1c\xef\x1c\x5d\x74\x77\x1e\x4b\xd7\xcf\xd9\x8b\x3e\x77\x22\x2e\x17" "\x90\xf6\x86\x61\xae\x25\x65\xc1\xfc\xff\x58\x9a\x97\x6c\xd4\x0b\x5f\x17" "\x3a\x21\xf8\x35\x04\x5c\xbb\x3f\xbb\xae\x14\xcf\xe0\xe5\x48\x0b\x08\xf1" "\x03\xf6\x21\xb8\xdb\xd0\x2a\xbc\x50\x73\x02\xcf\x5c\x10\xdd\xcc\x5a\x9c" "\x49\x26\x0f\xe5\x65\xbd\x76\xd8\x88\x57\xb8\x48\xc9\xb6\x7f\x5e\x6a\x6f" "\x3a\x91\xfb\x3b\xde\x86\x9b\xf9\x3d\x44\xd2\x29\xaa\x48\xf6\x08\xe6\x62" "\x72\x67\x75\x55\xa2\xa3\x44\x34\x92\x9f\x31\x6c\x36\x4f\xba\xc8\x7a\x98" "\x71\x78\x6d\x5b\xbb\x86\x35\xf7\x4d\x76\x24\xde\x78\xe9\x38\xcd\x70\x80" "\x56\xb0\x13\xab\xd7\x9f\xdd\xe4\x96\xa5\xf0\x42\xe0\x54\x40\x06\x00\xcf" "\x88\x31\xa9\x87\xe6\xf3\xb2\xa9\x4f\xa4\x9e\x4d\xfe\xfe\x82\xb6\x8c\x11" "\x3f\xc7\x02\x5c\xff\x2e\xe1\x32\x05\xac\xae\xd5\xbe\x28\x7e\xb0\x1f\xa0" "\x9b\xe1\xa0\x22\x05\x4d\xf3\xf0\xa6\x72\x34\x94\xa8\xbc\x25\x1e\xe2\x02" "\x20\xf4\xd0\x8f\x3e\xfe\x76\x57\x1b\x30\xb8\x25\x9c\x0d\x5c\x96\x63\x4d" "\x22\x95\x1a\x8a\x45\x1d\x57\xbf\x68\x2d\x02\x2c\x22\x1f\x42\xa6\x91\x68" "\x56\x93\xc3\xe5\xb4\x7b\x01\xa3\x45\x52\x3e\x28\xe5\xa9\x63\x75\x48\x58" "\x89\xb2\x8a\xc6\x65\x71\x4d\x46\x83\x3c\x92\xc5\x26\xe0\xb2\x9a\x50\x36" "\xf1\x50\xd0\x7c\x1c\x7a\x17\x3d\x9a\x6f\x21\xe9\x7e\xbd\x9d\x0c\xe4\xec" "\x8e\x95\x89\x99\xd6\x56\xa0\x52\x34\xd6\x02\x6e\x2a\x42\x06\x9c\x69\xb3" "\x7c\xfc\xe8\x54\xba\x1f\xe0\xc2\xc5\xe9\xf5\x20\x3c\xc0\x02\x3e\xa0\x93" "\x15\xc5\x37\x7b\xcd\xdc\x45\xe0\x0d\x96\xa6\x9f\x01\x08\xb0\xd2\x0d\x1f" "\x27\xcb\x65\xb4\x89\x5c\x5b\xe9\xe7\x96\xd4\xde\xca\xbe\x3a\xfb\x8f\xf7" "\x4a\x31\x95\x68\x4d\x1f\x82\x3d\xea\xc2\x47\x49\x8a\xe1\x23\xdd\x6c\xc3" "\xf4\xfe\x55\x98\xb4\xd7\xe5\xcd\xce\xf8\xd5\xc9\xb8\x75\xda\x35\x8a\x53" "\xa0\x85\xb6\xc9\x11\xd4\x74\x0c\x00\xcf\xda\x9e\xb7\x49\x32\x40\xb9\xbb" "\x0c\xa1\x1e\x87\xe8\x1c\x1e\xfd\x82\xe6\x69\xdb\x3c\xc8\x52\x9b\x87\x4d" "\x54\x07\x5a\x78\x64\x9e\x0b\x37\x51\xd4\xe6\x14\x14\x2b\x77\xf0\xf4\xe2" "\x08\x37\xbf\x3b\xb7\x9f\xb9\xcd\x98\xf8\x40\x0d\x85\x22\xcc\x47\x52\xcc" "\x89\x5a\x33\xaa\x8b\x29\xd8\x20\x1d\xf0\x6a\xfc\x09\xf2\x15\x36\x91\x5e" "\x36\xcd\xdd\x81\x1e\xa5\xbb\xae\x4d\x46\xaa\x3f\x3d\x69\x3b\xd4\xd1\x55" "\x5a\x24\xf6\x8a\xd5\x85\xd5\x3c\x32\xcf\x60\xe7\xf6\xe3\x6d\x2d\x24\x2a" "\x2e\x0e\x4b\x8a\xe6\x83\x20\x2e\x14\x4d\xe9\xa7\x6a\x59\x90", 897); syscall(__NR_setxattr, /*path=*/0x20000200ul, /*name=*/0x20003180ul, /*val=*/0x200031c0ul, /*size=*/0x381ul, /*flags=*/0ul); 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; memcpy((void*)0x20000180, "cgroup.controllers\000", 19); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000180ul, /*flags=*/0x275aul, /*mode=*/0ul); if (res != -1) r[1] = res; res = syscall(__NR_dup3, /*oldfd=*/r[1], /*newfd=*/r[0], /*flags=*/0ul); if (res != -1) r[2] = res; memcpy((void*)0x200001c0, "cpuset.effective_cpus\000", 22); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200001c0ul, /*flags=*/0x275aul, /*mode=*/0ul); if (res != -1) r[3] = res; *(uint32_t*)0x200000c0 = 0; *(uint32_t*)0x200000c4 = r[3]; *(uint64_t*)0x200000c8 = 0; *(uint64_t*)0x200000d0 = 8; *(uint64_t*)0x200000d8 = 4; *(uint64_t*)0x200000e0 = 0; syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xc028660f, /*arg=*/0x200000c0ul); } 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; }