// https://syzkaller.appspot.com/bug?id=b78803804c26ced6c2dcd071ed2151700d4812bc // 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 #include #include #include #include #include #include #include #include #include #include #ifndef __NR_bpf #define __NR_bpf 321 #endif #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif static unsigned long long procid; static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } static void thread_start(void* (*fn)(void*), void* arg) { pthread_t th; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setstacksize(&attr, 128 << 10); int i = 0; for (; i < 100; i++) { if (pthread_create(&th, &attr, fn, arg) == 0) { pthread_attr_destroy(&attr); return; } if (errno == EAGAIN) { usleep(50); continue; } break; } exit(1); } typedef struct { int state; } event_t; static void event_init(event_t* ev) { ev->state = 0; } static void event_reset(event_t* ev) { ev->state = 0; } static void event_set(event_t* ev) { if (ev->state) exit(1); __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE); syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000); } static void event_wait(event_t* ev) { while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0); } static int event_isset(event_t* ev) { return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE); } static int event_timedwait(event_t* ev, uint64_t timeout) { uint64_t start = current_time_ms(); uint64_t now = start; for (;;) { uint64_t remain = timeout - (now - start); struct timespec ts; ts.tv_sec = remain / 1000; ts.tv_nsec = (remain % 1000) * 1000 * 1000; syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts); if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE)) return 1; now = current_time_ms(); if (now - start > timeout) return 0; } } 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; } #define MAX_FDS 30 //% 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 XT_TABLE_SIZE 1536 #define XT_MAX_ENTRIES 10 struct xt_counters { uint64_t pcnt, bcnt; }; struct ipt_getinfo { char name[32]; unsigned int valid_hooks; unsigned int hook_entry[5]; unsigned int underflow[5]; unsigned int num_entries; unsigned int size; }; struct ipt_get_entries { char name[32]; unsigned int size; uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)]; }; struct ipt_replace { char name[32]; unsigned int valid_hooks; unsigned int num_entries; unsigned int size; unsigned int hook_entry[5]; unsigned int underflow[5]; unsigned int num_counters; struct xt_counters* counters; uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)]; }; struct ipt_table_desc { const char* name; struct ipt_getinfo info; struct ipt_replace replace; }; static struct ipt_table_desc ipv4_tables[] = { {.name = "filter"}, {.name = "nat"}, {.name = "mangle"}, {.name = "raw"}, {.name = "security"}, }; static struct ipt_table_desc ipv6_tables[] = { {.name = "filter"}, {.name = "nat"}, {.name = "mangle"}, {.name = "raw"}, {.name = "security"}, }; #define IPT_BASE_CTL 64 #define IPT_SO_SET_REPLACE (IPT_BASE_CTL) #define IPT_SO_GET_INFO (IPT_BASE_CTL) #define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1) struct arpt_getinfo { char name[32]; unsigned int valid_hooks; unsigned int hook_entry[3]; unsigned int underflow[3]; unsigned int num_entries; unsigned int size; }; struct arpt_get_entries { char name[32]; unsigned int size; uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)]; }; struct arpt_replace { char name[32]; unsigned int valid_hooks; unsigned int num_entries; unsigned int size; unsigned int hook_entry[3]; unsigned int underflow[3]; unsigned int num_counters; struct xt_counters* counters; uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)]; }; struct arpt_table_desc { const char* name; struct arpt_getinfo info; struct arpt_replace replace; }; static struct arpt_table_desc arpt_tables[] = { {.name = "filter"}, }; #define ARPT_BASE_CTL 96 #define ARPT_SO_SET_REPLACE (ARPT_BASE_CTL) #define ARPT_SO_GET_INFO (ARPT_BASE_CTL) #define ARPT_SO_GET_ENTRIES (ARPT_BASE_CTL + 1) static void checkpoint_iptables(struct ipt_table_desc* tables, int num_tables, int family, int level) { int fd = socket(family, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) { switch (errno) { case EAFNOSUPPORT: case ENOPROTOOPT: case ENOENT: return; } exit(1); } for (int i = 0; i < num_tables; i++) { struct ipt_table_desc* table = &tables[i]; strcpy(table->info.name, table->name); strcpy(table->replace.name, table->name); socklen_t optlen = sizeof(table->info); if (getsockopt(fd, level, IPT_SO_GET_INFO, &table->info, &optlen)) { switch (errno) { case EPERM: case ENOENT: case ENOPROTOOPT: continue; } exit(1); } if (table->info.size > sizeof(table->replace.entrytable)) exit(1); if (table->info.num_entries > XT_MAX_ENTRIES) exit(1); struct ipt_get_entries entries; memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size; if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen)) exit(1); table->replace.valid_hooks = table->info.valid_hooks; table->replace.num_entries = table->info.num_entries; table->replace.size = table->info.size; memcpy(table->replace.hook_entry, table->info.hook_entry, sizeof(table->replace.hook_entry)); memcpy(table->replace.underflow, table->info.underflow, sizeof(table->replace.underflow)); memcpy(table->replace.entrytable, entries.entrytable, table->info.size); } close(fd); } static void reset_iptables(struct ipt_table_desc* tables, int num_tables, int family, int level) { int fd = socket(family, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) { switch (errno) { case EAFNOSUPPORT: case ENOPROTOOPT: case ENOENT: return; } exit(1); } for (int i = 0; i < num_tables; i++) { struct ipt_table_desc* table = &tables[i]; if (table->info.valid_hooks == 0) continue; struct ipt_getinfo info; memset(&info, 0, sizeof(info)); strcpy(info.name, table->name); socklen_t optlen = sizeof(info); if (getsockopt(fd, level, IPT_SO_GET_INFO, &info, &optlen)) exit(1); if (memcmp(&table->info, &info, sizeof(table->info)) == 0) { struct ipt_get_entries entries; memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size; if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen)) exit(1); if (memcmp(table->replace.entrytable, entries.entrytable, table->info.size) == 0) continue; } struct xt_counters counters[XT_MAX_ENTRIES]; table->replace.num_counters = info.num_entries; table->replace.counters = counters; optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) + table->replace.size; if (setsockopt(fd, level, IPT_SO_SET_REPLACE, &table->replace, optlen)) exit(1); } close(fd); } static void checkpoint_arptables(void) { int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) { switch (errno) { case EAFNOSUPPORT: case ENOPROTOOPT: case ENOENT: return; } exit(1); } for (unsigned i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) { struct arpt_table_desc* table = &arpt_tables[i]; strcpy(table->info.name, table->name); strcpy(table->replace.name, table->name); socklen_t optlen = sizeof(table->info); if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &table->info, &optlen)) { switch (errno) { case EPERM: case ENOENT: case ENOPROTOOPT: continue; } exit(1); } if (table->info.size > sizeof(table->replace.entrytable)) exit(1); if (table->info.num_entries > XT_MAX_ENTRIES) exit(1); struct arpt_get_entries entries; memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size; if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen)) exit(1); table->replace.valid_hooks = table->info.valid_hooks; table->replace.num_entries = table->info.num_entries; table->replace.size = table->info.size; memcpy(table->replace.hook_entry, table->info.hook_entry, sizeof(table->replace.hook_entry)); memcpy(table->replace.underflow, table->info.underflow, sizeof(table->replace.underflow)); memcpy(table->replace.entrytable, entries.entrytable, table->info.size); } close(fd); } static void reset_arptables() { int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) { switch (errno) { case EAFNOSUPPORT: case ENOPROTOOPT: case ENOENT: return; } exit(1); } for (unsigned i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) { struct arpt_table_desc* table = &arpt_tables[i]; if (table->info.valid_hooks == 0) continue; struct arpt_getinfo info; memset(&info, 0, sizeof(info)); strcpy(info.name, table->name); socklen_t optlen = sizeof(info); if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &info, &optlen)) exit(1); if (memcmp(&table->info, &info, sizeof(table->info)) == 0) { struct arpt_get_entries entries; memset(&entries, 0, sizeof(entries)); strcpy(entries.name, table->name); entries.size = table->info.size; optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size; if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen)) exit(1); if (memcmp(table->replace.entrytable, entries.entrytable, table->info.size) == 0) continue; } else { } struct xt_counters counters[XT_MAX_ENTRIES]; table->replace.num_counters = info.num_entries; table->replace.counters = counters; optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) + table->replace.size; if (setsockopt(fd, SOL_IP, ARPT_SO_SET_REPLACE, &table->replace, optlen)) exit(1); } close(fd); } #define NF_BR_NUMHOOKS 6 #define EBT_TABLE_MAXNAMELEN 32 #define EBT_CHAIN_MAXNAMELEN 32 #define EBT_BASE_CTL 128 #define EBT_SO_SET_ENTRIES (EBT_BASE_CTL) #define EBT_SO_GET_INFO (EBT_BASE_CTL) #define EBT_SO_GET_ENTRIES (EBT_SO_GET_INFO + 1) #define EBT_SO_GET_INIT_INFO (EBT_SO_GET_ENTRIES + 1) #define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO + 1) struct ebt_replace { char name[EBT_TABLE_MAXNAMELEN]; unsigned int valid_hooks; unsigned int nentries; unsigned int entries_size; struct ebt_entries* hook_entry[NF_BR_NUMHOOKS]; unsigned int num_counters; struct ebt_counter* counters; char* entries; }; struct ebt_entries { unsigned int distinguisher; char name[EBT_CHAIN_MAXNAMELEN]; unsigned int counter_offset; int policy; unsigned int nentries; char data[0] __attribute__((aligned(__alignof__(struct ebt_replace)))); }; struct ebt_table_desc { const char* name; struct ebt_replace replace; char entrytable[XT_TABLE_SIZE]; }; static struct ebt_table_desc ebt_tables[] = { {.name = "filter"}, {.name = "nat"}, {.name = "broute"}, }; static void checkpoint_ebtables(void) { int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) { switch (errno) { case EAFNOSUPPORT: case ENOPROTOOPT: case ENOENT: return; } exit(1); } for (size_t i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) { struct ebt_table_desc* table = &ebt_tables[i]; strcpy(table->replace.name, table->name); socklen_t optlen = sizeof(table->replace); if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_INFO, &table->replace, &optlen)) { switch (errno) { case EPERM: case ENOENT: case ENOPROTOOPT: continue; } exit(1); } if (table->replace.entries_size > sizeof(table->entrytable)) exit(1); table->replace.num_counters = 0; table->replace.entries = table->entrytable; optlen = sizeof(table->replace) + table->replace.entries_size; if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_ENTRIES, &table->replace, &optlen)) exit(1); } close(fd); } static void reset_ebtables() { int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (fd == -1) { switch (errno) { case EAFNOSUPPORT: case ENOPROTOOPT: case ENOENT: return; } exit(1); } for (unsigned i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) { struct ebt_table_desc* table = &ebt_tables[i]; if (table->replace.valid_hooks == 0) continue; struct ebt_replace replace; memset(&replace, 0, sizeof(replace)); strcpy(replace.name, table->name); socklen_t optlen = sizeof(replace); if (getsockopt(fd, SOL_IP, EBT_SO_GET_INFO, &replace, &optlen)) exit(1); replace.num_counters = 0; table->replace.entries = 0; for (unsigned h = 0; h < NF_BR_NUMHOOKS; h++) table->replace.hook_entry[h] = 0; if (memcmp(&table->replace, &replace, sizeof(table->replace)) == 0) { char entrytable[XT_TABLE_SIZE]; memset(&entrytable, 0, sizeof(entrytable)); replace.entries = entrytable; optlen = sizeof(replace) + replace.entries_size; if (getsockopt(fd, SOL_IP, EBT_SO_GET_ENTRIES, &replace, &optlen)) exit(1); if (memcmp(table->entrytable, entrytable, replace.entries_size) == 0) continue; } for (unsigned j = 0, h = 0; h < NF_BR_NUMHOOKS; h++) { if (table->replace.valid_hooks & (1 << h)) { table->replace.hook_entry[h] = (struct ebt_entries*)table->entrytable + j; j++; } } table->replace.entries = table->entrytable; optlen = sizeof(table->replace) + table->replace.entries_size; if (setsockopt(fd, SOL_IP, EBT_SO_SET_ENTRIES, &table->replace, optlen)) exit(1); } close(fd); } static void checkpoint_net_namespace(void) { checkpoint_ebtables(); checkpoint_arptables(); checkpoint_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]), AF_INET, SOL_IP); checkpoint_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]), AF_INET6, SOL_IPV6); } static void reset_net_namespace(void) { reset_ebtables(); reset_arptables(); reset_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]), AF_INET, SOL_IP); reset_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]), AF_INET6, SOL_IPV6); } static void mount_cgroups(const char* dir, const char** controllers, int count) { if (mkdir(dir, 0777)) { return; } char enabled[128] = {0}; int i = 0; for (; i < count; i++) { if (mount("none", dir, "cgroup", 0, controllers[i])) { continue; } umount(dir); strcat(enabled, ","); strcat(enabled, controllers[i]); } if (enabled[0] == 0) { if (rmdir(dir) && errno != EBUSY) exit(1); return; } if (mount("none", dir, "cgroup", 0, enabled + 1)) { if (rmdir(dir) && errno != EBUSY) exit(1); } if (chmod(dir, 0777)) { } } static void mount_cgroups2(const char** controllers, int count) { if (mkdir("/syzcgroup/unified", 0777)) { return; } if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) { if (rmdir("/syzcgroup/unified") && errno != EBUSY) exit(1); return; } if (chmod("/syzcgroup/unified", 0777)) { } int control = open("/syzcgroup/unified/cgroup.subtree_control", O_WRONLY); if (control == -1) return; int i; for (i = 0; i < count; i++) if (write(control, controllers[i], strlen(controllers[i])) < 0) { } close(control); } static void setup_cgroups() { const char* unified_controllers[] = {"+cpu", "+io", "+pids"}; const char* net_controllers[] = {"net", "net_prio", "devices", "blkio", "freezer"}; const char* cpu_controllers[] = {"cpuset", "cpuacct", "hugetlb", "rlimit", "memory"}; if (mkdir("/syzcgroup", 0777)) { return; } mount_cgroups2(unified_controllers, sizeof(unified_controllers) / sizeof(unified_controllers[0])); mount_cgroups("/syzcgroup/net", net_controllers, sizeof(net_controllers) / sizeof(net_controllers[0])); mount_cgroups("/syzcgroup/cpu", cpu_controllers, sizeof(cpu_controllers) / sizeof(cpu_controllers[0])); write_file("/syzcgroup/cpu/cgroup.clone_children", "1"); write_file("/syzcgroup/cpu/cpuset.memory_pressure_enabled", "1"); } static void setup_cgroups_loop() { int pid = getpid(); char file[128]; char cgroupdir[64]; snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid); if (mkdir(cgroupdir, 0777)) { } snprintf(file, sizeof(file), "%s/pids.max", cgroupdir); write_file(file, "32"); snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir); write_file(file, "%d", pid); snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid); if (mkdir(cgroupdir, 0777)) { } snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir); write_file(file, "%d", pid); snprintf(file, sizeof(file), "%s/memory.soft_limit_in_bytes", cgroupdir); write_file(file, "%d", 299 << 20); snprintf(file, sizeof(file), "%s/memory.limit_in_bytes", cgroupdir); write_file(file, "%d", 300 << 20); snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid); if (mkdir(cgroupdir, 0777)) { } snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir); write_file(file, "%d", pid); } static void setup_cgroups_test() { char cgroupdir[64]; snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid); if (symlink(cgroupdir, "./cgroup")) { } snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid); if (symlink(cgroupdir, "./cgroup.cpu")) { } snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid); if (symlink(cgroupdir, "./cgroup.net")) { } } static void initialize_cgroups() { if (mkdir("./syz-tmp/newroot/syzcgroup", 0700)) exit(1); if (mkdir("./syz-tmp/newroot/syzcgroup/unified", 0700)) exit(1); if (mkdir("./syz-tmp/newroot/syzcgroup/cpu", 0700)) exit(1); if (mkdir("./syz-tmp/newroot/syzcgroup/net", 0700)) exit(1); unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE; if (mount("/syzcgroup/unified", "./syz-tmp/newroot/syzcgroup/unified", NULL, bind_mount_flags, NULL)) { } if (mount("/syzcgroup/cpu", "./syz-tmp/newroot/syzcgroup/cpu", NULL, bind_mount_flags, NULL)) { } if (mount("/syzcgroup/net", "./syz-tmp/newroot/syzcgroup/net", NULL, bind_mount_flags, NULL)) { } } static void setup_binderfs(); static void setup_fusectl(); static void sandbox_common_mount_tmpfs(void) { write_file("/proc/sys/fs/mount-max", "100000"); if (mkdir("./syz-tmp", 0777)) exit(1); if (mount("", "./syz-tmp", "tmpfs", 0, NULL)) exit(1); if (mkdir("./syz-tmp/newroot", 0777)) exit(1); if (mkdir("./syz-tmp/newroot/dev", 0700)) exit(1); unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE; if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL)) exit(1); if (mkdir("./syz-tmp/newroot/proc", 0700)) exit(1); if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL)) exit(1); if (mkdir("./syz-tmp/newroot/selinux", 0700)) exit(1); const char* selinux_path = "./syz-tmp/newroot/selinux"; if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) { if (errno != ENOENT) exit(1); if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); } if (mkdir("./syz-tmp/newroot/sys", 0700)) exit(1); if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL)) exit(1); if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); initialize_cgroups(); if (mkdir("./syz-tmp/pivot", 0777)) exit(1); if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) { if (chdir("./syz-tmp")) exit(1); } else { if (chdir("/")) exit(1); if (umount2("./pivot", MNT_DETACH)) exit(1); } if (chroot("./newroot")) exit(1); if (chdir("/")) exit(1); setup_binderfs(); setup_fusectl(); } static void setup_fusectl() { if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { } } static void setup_binderfs() { if (mkdir("/dev/binderfs", 0777)) { } if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); if (getppid() == 1) exit(1); struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = (200 << 20); setrlimit(RLIMIT_AS, &rlim); rlim.rlim_cur = rlim.rlim_max = 32 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 136 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 128 << 20; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); if (unshare(CLONE_NEWNS)) { } if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) { } if (unshare(CLONE_NEWIPC)) { } if (unshare(0x02000000)) { } if (unshare(CLONE_NEWUTS)) { } if (unshare(CLONE_SYSVSEM)) { } typedef struct { const char* name; const char* value; } sysctl_t; static const sysctl_t sysctls[] = { {"/proc/sys/kernel/shmmax", "16777216"}, {"/proc/sys/kernel/shmall", "536870912"}, {"/proc/sys/kernel/shmmni", "1024"}, {"/proc/sys/kernel/msgmax", "8192"}, {"/proc/sys/kernel/msgmni", "1024"}, {"/proc/sys/kernel/msgmnb", "1024"}, {"/proc/sys/kernel/sem", "1024 1048576 500 1024"}, }; unsigned i; for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++) write_file(sysctls[i].name, sysctls[i].value); } static int wait_for_loop(int pid) { if (pid < 0) exit(1); int status = 0; while (waitpid(-1, &status, __WALL) != pid) { } return WEXITSTATUS(status); } static void drop_caps(void) { struct __user_cap_header_struct cap_hdr = {}; struct __user_cap_data_struct cap_data[2] = {}; cap_hdr.version = _LINUX_CAPABILITY_VERSION_3; cap_hdr.pid = getpid(); if (syscall(SYS_capget, &cap_hdr, &cap_data)) exit(1); const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE); cap_data[0].effective &= ~drop; cap_data[0].permitted &= ~drop; cap_data[0].inheritable &= ~drop; if (syscall(SYS_capset, &cap_hdr, &cap_data)) exit(1); } static int do_sandbox_none(void) { if (unshare(CLONE_NEWPID)) { } int pid = fork(); if (pid != 0) return wait_for_loop(pid); sandbox_common(); drop_caps(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); sandbox_common_mount_tmpfs(); loop(); exit(1); } #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 setup_loop() { setup_cgroups_loop(); checkpoint_net_namespace(); } 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); } reset_net_namespace(); } static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); setup_cgroups_test(); write_file("/proc/self/oom_score_adj", "1000"); if (symlink("/dev/binderfs", "./binderfs")) { } } static void close_fds() { for (int fd = 3; fd < MAX_FDS; fd++) close(fd); } static const char* setup_binfmt_misc() { if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0) && errno != EBUSY) { return NULL; } if (!write_file("/proc/sys/fs/binfmt_misc/register", ":syz0:M:0:\x01::./file0:") || !write_file("/proc/sys/fs/binfmt_misc/register", ":syz1:M:1:\x02::./file0:POC")) return "write(/proc/sys/fs/binfmt_misc/register) failed"; return NULL; } static const char* setup_usb() { if (chmod("/dev/raw-gadget", 0666)) return "failed to chmod /dev/raw-gadget"; return NULL; } static void setup_sysctl() { int cad_pid = fork(); if (cad_pid < 0) exit(1); if (cad_pid == 0) { for (;;) sleep(100); } char tmppid[32]; snprintf(tmppid, sizeof(tmppid), "%d", cad_pid); struct { const char* name; const char* data; } files[] = { {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"}, {"/proc/sys/kernel/hung_task_check_interval_secs", "20"}, {"/proc/sys/net/core/bpf_jit_kallsyms", "1"}, {"/proc/sys/net/core/bpf_jit_harden", "0"}, {"/proc/sys/kernel/kptr_restrict", "0"}, {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"}, {"/proc/sys/fs/mount-max", "100"}, {"/proc/sys/vm/oom_dump_tasks", "0"}, {"/proc/sys/debug/exception-trace", "0"}, {"/proc/sys/kernel/printk", "7 4 1 3"}, {"/proc/sys/kernel/keys/gc_delay", "1"}, {"/proc/sys/vm/oom_kill_allocating_task", "1"}, {"/proc/sys/kernel/ctrl-alt-del", "0"}, {"/proc/sys/kernel/cad_pid", tmppid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) { } } kill(cad_pid, SIGKILL); while (waitpid(cad_pid, NULL, 0) != cad_pid) ; } struct thread_t { int created, call; event_t ready, done; }; static struct thread_t threads[16]; static void execute_call(int call); static int running; static void* thr(void* arg) { struct thread_t* th = (struct thread_t*)arg; for (;;) { event_wait(&th->ready); event_reset(&th->ready); execute_call(th->call); __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); event_set(&th->done); } return 0; } static void execute_one(void) { if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } int i, call, thread; for (call = 0; call < 10; call++) { for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) { struct thread_t* th = &threads[thread]; if (!th->created) { th->created = 1; event_init(&th->ready); event_init(&th->done); event_set(&th->done); thread_start(thr, th); } if (!event_isset(&th->done)) continue; event_reset(&th->done); th->call = call; __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); event_set(&th->ready); event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0)); break; } } for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) sleep_ms(1); close_fds(); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { setup_loop(); 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[1] = {0xffffffffffffffff}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: memcpy((void*)0x20000200, "ext4\000", 5); memcpy((void*)0x20000740, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 255); *(uint8_t*)0x200006c0 = 0; memcpy( (void*)0x20000ac0, "\x78\x9c\xec\xdd\x3f\x68\x33\x65\x1c\x07\xf0\xef\x5d\x12\x5f\xfb\xbe" "\x41\x5e\x75\x11\xc4\x3f\x20\x22\x5a\x28\xaf\x9b\xe0\xf2\xba\x28\x14" "\xa4\x14\x11\x41\x85\x8a\x88\x8b\xd2\x0a\xb5\xc5\xad\x71\x72\x71\xd0" "\x59\xa5\x93\x4b\x11\x37\xab\xa3\x74\x29\x2e\x8a\xe0\x54\xb5\x43\x5d" "\x04\x2d\x0e\x16\x07\x1d\x22\xc9\xb5\x52\xdb\x88\xda\xd4\x9c\xf4\x3e" "\x1f\xb8\xde\x5d\xef\x79\xee\xf7\x1c\xb9\xef\x93\x2c\x97\x04\x68\xac" "\xab\x49\xae\x27\x69\x25\x99\x4e\xd2\x49\x52\x1c\x6f\x70\x77\xb5\x5c" "\x3d\xdc\x5d\x9f\xda\x5e\x48\xfa\xfd\x27\x7e\x2a\x86\xed\xaa\xfd\xca" "\x51\xbf\x2b\x49\x7a\x49\x1e\x4a\xb2\x55\x16\x79\xa9\x9d\xac\x6e\x3e" "\xb3\xf7\xcb\xce\x63\xf7\xbd\xb9\xd2\xb9\xf7\xfd\xcd\xa7\xa7\x26\x7a" "\x91\x87\xf6\xf7\x76\x1f\x3f\x78\x6f\xee\x8d\x8f\x66\x1f\x5c\xfd\xe2" "\xab\x1f\xe6\x8a\x5c\x4f\xf7\x4f\xd7\x75\xfe\x8a\x11\xff\x6b\x17\xc9" "\x2d\xff\x45\xb1\xff\x89\xa2\x5d\xf7\x08\xf8\x27\xe6\x5f\xfb\xf0\xeb" "\x41\xee\x6f\x4d\x72\xcf\x30\xff\x9d\x94\xa9\x5e\xbc\xb7\x96\x6f\xd8" "\xea\xe4\x81\x77\xff\xaa\xef\xdb\x3f\x7e\x79\xfb\x24\xc7\x0a\x9c\xbf" "\x7e\xbf\x33\x78\x0f\xec\xf5\x81\xc6\x29\x93\x74\x53\x94\x33\x49\xaa" "\xed\xb2\x9c\x99\xa9\x3e\xc3\x7f\xd3\xba\x5c\xbe\xbc\xb4\xfc\xea\xf4" "\x8b\x4b\x2b\x8b\x2f\xd4\x3d\x53\x01\xe7\xa5\x9b\xec\x3e\xfa\xc9\xa5" "\x8f\xaf\x9c\xc8\xff\xf7\xad\x2a\xff\xc0\xc5\x35\xc8\xff\x93\xf3\x1b" "\xdf\x0e\xb6\x0f\x5a\x75\x8f\x06\x98\x88\x3b\xaa\xd5\x20\xff\xd3\xcf" "\xad\xdd\x1f\xf9\x87\xc6\x91\x7f\x68\x2e\xf9\x87\xe6\x92\x7f\x68\x2e" "\xf9\x87\xe6\x92\x7f\x68\x2e\xf9\x87\x0b\xac\x73\xb4\xd1\x1b\x79\x58" "\xfe\xa1\xb9\xe4\x1f\x9a\x4b\xfe\xa1\xb9\x8e\xe7\x1f\x00\x68\x96\xfe" "\xa5\xba\x9f\x40\x06\xea\x52\xf7\xfc\x03\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x9c\xb6\x3e\xb5\xbd\x70\xb4\x4c\xaa\xe6" "\x67\xef\x24\xfb\x8f\x24\x69\x8f\xaa\xdf\x1a\xfe\x1e\x71\x72\xe3\xf0" "\xef\xe5\x9f\x8b\x41\xb3\x3f\x14\x55\xb7\xb1\x3c\x7b\xd7\x98\x27\x18" "\xd3\x07\x35\x3f\x7d\x7d\xd3\x77\xf5\xd6\xff\xfc\xce\x7a\xeb\xaf\x2d" "\x26\xbd\xd7\x93\x5c\x6b\xb7\x4f\xdf\x7f\xc5\xe1\xfd\x77\x76\x37\xff" "\xcd\xf1\xce\xf3\x63\x16\xf8\x97\x8a\x13\xfb\x0f\x3f\x35\xd9\xfa\x27" "\xfd\xb6\x51\x6f\xfd\xd9\x9d\xe4\xd3\xc1\xfc\x73\x6d\xd4\xfc\x53\xe6" "\xb6\xe1\x7a\xf4\xfc\xd3\x3d\xfe\x15\xcb\x67\xf4\xca\xaf\x63\x9e\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x89\xf9\x3d\x00\x00\xff\xff" "\x0f\x2b\x6d\xcc", 582); syz_mount_image(/*fs=*/0x20000200, /*dir=*/0x20000740, /*flags=*/0, /*opts=*/0x200006c0, /*chdir=*/0xfe, /*size=*/0x246, /*img=*/0x20000ac0); break; case 1: memcpy((void*)0x20000e00, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 251); syscall(__NR_creat, /*file=*/0x20000e00ul, /*mode=*/0ul); break; case 2: memcpy((void*)0x20000000, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 250); syscall(__NR_mknod, /*file=*/0x20000000ul, /*mode=*/0ul, /*dev=*/0x701 + procid * 2); break; case 3: memcpy((void*)0x20001240, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 250); memcpy((void*)0x20000bc0, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 257); syscall(__NR_link, /*old=*/0x20001240ul, /*new=*/0x20000bc0ul); break; case 4: memcpy((void*)0x20000600, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 250); memcpy((void*)0x20000f40, "./" "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000", 252); syscall(__NR_rename, /*old=*/0x20000600ul, /*new=*/0x20000f40ul); break; case 5: memcpy((void*)0x20000080, "./bus\000", 6); syscall( __NR_open, /*file=*/0x20000080ul, /*flags=O_NONBLOCK|O_NOCTTY|O_LARGEFILE|O_CREAT|FASYNC|0x2*/ 0xa942ul, /*mode=*/0ul); break; case 6: memcpy((void*)0x20000380, "/dev/loop", 9); *(uint8_t*)0x20000389 = 0x30 + procid * 1; *(uint8_t*)0x2000038a = 0; memcpy((void*)0x20000140, "./bus\000", 6); syscall(__NR_mount, /*src=*/0x20000380ul, /*dst=*/0x20000140ul, /*type=*/0ul, /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul); break; case 7: memcpy((void*)0x20000080, "./bus\000", 6); res = syscall(__NR_open, /*file=*/0x20000080ul, /*flags=O_SYNC|O_NOCTTY|O_DIRECT|O_CLOEXEC|O_RDWR*/ 0x185102ul, /*mode=*/0ul); if (res != -1) r[0] = res; break; case 8: syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0xb36000ul, /*prot=PROT_WRITE*/ 2ul, /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul, /*fd=*/r[0], /*offset=*/0ul); break; case 9: *(uint32_t*)0x20000080 = 0x11; *(uint32_t*)0x20000084 = 8; *(uint64_t*)0x20000088 = 0x20000480; memcpy( (void*)0x20000480, "\x62\x0a\xf8\xff\x0c\x20\x00\x21\xbf\xa1\x00\x00\x00\x00\x00\x00\x07" "\x01\x00\x00\xf8\xff\xff\xff\xb7\x02\x00\x00\x03\x00\x00\x00\xbd\x12" "\x00\x00\x00\x00\x00\x00\x85\x00\x00\x00\x06\x00\x00\x00\xb7\x00\x00" "\x00\x00\x00\x00\x00\x95\x00\x00\x00\x00\x00\x00\x00\x3f\xaf\x4f\x1e" "\x7f\x2a\xa3\xd9\xb1\x8e\xd8\x1c\x0c\x86\x9b\x51\xec\x6c\x0a\xf4\xe0" "\xe4\xa9\x44\x6c\x76\x70\x56\x89\x82\xb4\xe0\x20\xf6\x98\x39\x3a\xa0" "\xf3\x88\x1f\x9c\x24\xaa\x56\xf1\x51\x99\xfa\xd0\x09\x3c\x59\xd6\x6b" "\x5e\xce\x9f\x36\xc7\x0d\x0f\x13\x90\x5e\xa2\x3c\x22\x62\x4c\x9f\x87" "\xf9\x79\x3f\x50\xbb\x54\x60\x40\x67\x7b\x0c\x50\x77\xda\x80\xfb\x98" "\x2c\x1e\x94\x00\xe6\x93\x14\x6c\xea\x48\x4a\x41\x5b\x76\x96\x61\x18" "\xb6\x4f\x75\x1a\x0f\x24\x1b\x07\x2e\x90\x08\x00\x08\x00\x2d\x75\x59" "\x3a\x28\x6c\xec\xc9\x3e\x64\xc2\x27\xc9\x5a\xa0\xb7\x84\x62\x57\x04" "\xf0\x7a\x72\xc2\x34\x66\x4c\x0a\xf9\x36\x0a\x1f\x7a\x5e\x6b\x60\x71" "\x30\xc8\x9f\x18\xc0\xc1\x08\x9d\x8b\x85\x32\x89\xe0\x1a\xa2\x7a\xe8" "\xb0\x9e\x00\xe7\x9a\xb2\x0b\x0b\x8e\x11\x48\xf4\x9f\xaf\x2a\xd0\x00" "\x00\x00\x00\x00\x00\x00\x6f\xa0\x3c\x64\x68\x97\x20\x89\xb3\x02\xd7" "\xbf\x60\x23\xcd\xce\xdb\x5e\x01\x25\xeb\xbc\x08\xde\xe5\x10\xcb\x23" "\x64\x14\x92\x15\x10\x83\x33\x71\x9a\xcd\x97\xcf\x84\xde\xd4\x02\x24" "\xed\xc5\x46\x5a\x93\x2b\x77\xe7\x4e\x80\x2a\x0d\x42\xbc\x60\x99\xad" "\x23\x00\x00\x00\x80\x00\x6e\xf6\xc1\xff\x09\x00\x00\x00\x00\x00\x00" "\x10\xc6\x3a\x94\x9e\x8b\x79\x55\x39\x4f\xfa\x82\xb8\xe9\x42\xc8\x6e" "\x00\xf4\xab\x87\xb1\xbf\xed\xa7\xbe\x58\x66\x02\xd9\x85\x43\x0c\xea" "\x01\x62\xab\x3f\xcf\x45\x91\xc9\x26\xab\xfb\x07\x67\x19\x23\x02\x00" "\x00\x00\xb0\xee\xa2\x44\x92\xa6\x60\x58\x3e\xec\xb4\x2c\xbc\xd3\xde" "\x3a\x83\x20\x9d\xa1\x7a\x0f\xaf\x60\xfd\x6a\xd9\xb9\x7a\xa5\xfa\x68" "\x48\x03\x66\xc9\xc6\xfd\x6f\xa5\x04\x3a\xa3\x92\x6b\x81\xe3\xb5\x9c" "\x95\xc2\x5a\x57\x3d\xc2\xed\xca\xea\x2b\x1a\x52\x49\x6d\xfc\xaf\x99" "\x43\x14\x12\xfd\x13\x4a\x99\x63\x82\xa1\xa0\x4d\x5b\xb9\x24\xcf\xe5" "\xf3\x18\x54\x18\xd6\x05\xff\xff\x9c\x4d\x2e\xc7\xc3\x2f\x20\x95\xe6" "\x3c\x80\xaf\xf9\xfa\x74\x0b\x5b\x76\x32\xf3\x20\x30\x91\x6f\x89\xc6" "\xda\xd7\x60\x3f\x2b\xa2\xa7\x90\xd6\x2d\x6f\xae\xc2\x31\xfe\xd4\x4d" "\xa4\x92\x8b\x30\x14\x2b\xa1\x1d\xe6\xc5\xd5\x0b\x83\xba\xe6\x13\x40" "\x22\x16\xb5\x05\x4d\x1e\x7c\x13\xb1\x35\x5d\x6f\x4a\x82\x45\xff\xa4" "\x99\x7d\xa9\xc7\x7a\xf4\xc0\xeb\x97\xfc\xa5\x85\xec\x6b\xf5\x83\x51" "\xd5\x64\xbe\xb6\xd9\x52\xaa\xb9\xc7\x07\x64\xb0\xa8\xa7\x58\x3c\x90" "\xb3\x43\x3b\x80\x9b\xdb\x9f\xbd\x48\xbc\x87\x34\x95\xcb\xff\x8a\x32" "\x6e\xea\x31\xae\x4e\x0f\x75\x05\xeb\xf6\xc9\xd1\x33\x30\xca\x00\x5a" "\xce\x1a\x84\x52\x1f\x14\x51\x8c\x9b\x47\x6f\xcc\xbd\x6c\x71\x20\x16" "\x21\x98\x48\x62\x4b\x87\xce\xc2\xdb\xe9\x82\x23\xa0\xeb\x4f\xa3\x9f" "\x6b\x5c\x02\xe6\xd6\xd9\x07\x56\xff\x57\x90\x2a\x8f\x57\x00\x00\x00" "\x00\x97\x00\xcf\x0b\x4b\x8b\xc2\x29\x41\x33\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x10\x00\x8b\xc0\xd9\x55\x97\x11\xe6\xe8\x86\x1c\x46\x49\x5b\xa5\x85" "\xa4\xb2\xd0\x2e\xdc\x3e\x28\xdd\x27\x1c\x89\x62\x49\xed\x85\xb9\x80" "\x68\x0b\x00\x00\x2b\x43\x5a\xc1\x5f\xc0\x28\x8d\x9b\x2a\x16\x9c\xdc" "\xac\xc4\x13\x03\x8d\xaf\xb7\xa2\xc8\xcb\x48\x2b\xac\x0a\xc5\x02\xd9" "\xba\x96\xff\xff\xff\x7f\x00\x00\x10\x00\x00\x00\x00\x00\x00\x7d\x5a" "\xd8\x97\xef\x3b\x7c\xda\x42\x01\x3d\x53\x04\x6d\xa2\x1b\x40\x21\x6e" "\x14\xba\x2d\x6a\xd5\x65\x6b\xff\xf1\x7a\xdd\xae\xda\xb2\x5b\x30\x00" "\x2a\xbb\xba\x7f\xa7\x25\xf3\x84\x00\xbe\x7c\x1f\x00\x1b\x2c\xd3\x17" "\x90\x2f\x19\xe3\x85\xbe\x9e\x48\xdc\xcf\xf7\x29\x43\x32\x82\x83\x06" "\x89\xda\x6b\x53\xb2\x63\x33\x98\x63\x29\x77\x71\x42\x9d\x12\x00\x00" "\x00\x33\x41\xbf\x4a\xba\xca\xc9\x59\x00\xfc\xa0\x49\x3c\xf2\x9b\x33" "\xdc\xc9\xff\xff\xff\xff\xff\xff\xff\xd3\x9f\xec\x22\x71\xff\x01\x58" "\x96\x46\xef\xd1\xcf\x87\x0c\xd7\xbb\x23\x66\xfd\xe4\x1f\x94\x29\x0c" "\x2a\x5f\xf8\x70\xce\x41\xfd\x34\x67\xde\xcb\x05\xcf\xd9\xfc\xb3\x2c" "\x8e\xd1\xdb\xd9\xd1\x0a\x64\xc1\x08\x3d\x5e\x71\xb5\x56\x5b\x17\x68" "\xee\x58\x96\x9c\x41\x59\x52\x29\xdf\x17\xbc\xad\x70\xfb\x40\x21\x42" "\x8c\xe9\x70\x27\x5d\x13\xb7\x81\x00\x78\x8f\x11\xf7\x61\x61\xd4\x6e" "\xa3\xab\xe0\xfa\x4d\x30\xdc\x94\xef\x24\x18\x75\xf3\xb4\xce\x02\x32" "\xfc\xea\x69\xc2\x71\xd7\xfa\x29\x82\x2a\xea\x68\xa6\x60\xe7\x17\xa0" "\x4b\xec\xff\x0f\x71\x91\x97\x72\x4f\x4f\xce\x10\x93\xb6\x2d\x7e\x8c" "\x71\x23\xd8\xec\x57\x1b\xe5\x4c\x72\xd9\x78\xcf\x90\x6d\xf0\x04\x2e" "\x36\xac\xd3\x7d\x7f\x9e\x11\x9f\x2c\x06\xf8\x15\x31\x2e\x0c\xfe\x22" "\x2a\x06\xf5\x6d\xd0\x22\xc0\x74\xeb\x8a\x32\x2f\xb0\xbf\x47\xc0\xa8" "\xd1\x54\xb4\x05\xc3\x7f\xea\xf3\xdd\x95\xf6\xef\x2a\xe5\x82\x78\x61" "\x05\xc7\xdf\x8b\xe5\x87\x70\x50\xc9\x13\x01\xbb\x99\x73\x16\xdb\xf1" "\x78\x66\xfb\x84\xd4\x17\x37\x31\xef\xe8\x95\x01\x2f\x1c\x55\x60\x92" "\x6e\x90\x10\x9b\x59\x85\x02\xd3\xe9\x59\xef\xc7\x1f\x66\x5c\x4d\x75" "\xcf\x24\x58\xe3\x54\x6c\x1c\x77\x6d\xa6\x4f\xb5\xab\xee\x0a\xcf\xd2" "\x35\xf2\xf4\x63\x2c\x90\x62\xec\xe8\x4c\x99\xa0\x61\x88\x7a\x20\x63" "\x9b\x41\xc8\xc1\x2e\xe8\x6c\x50\x80\x40\x42\xb3\xfb\x5a\xac\x51\x8a" "\x75\xf9\xe7\xd7\x10\x1d\x5e\x18\x6c\x48\x9b\x3a\x06\xfb\x99\xe0\xaa" "\x7f\x23\xa0\x54\xde\x2f\x4d\x92\xd6\xbd\x72\xee\x2c\x9f\xdc\x75\xaa" "\xaf\x1e\x3e\x48\x3b\x4a\xd0\x55\x73\xaf\x40\x32\x69\x93\x94\x7d\x9a" "\x63\x1b\xcb\xf3\x58\x37\x84\xac\xbd\xa2\x16\x55\x0d\x7a\xec\x6b\x79" "\xe3\x0c\xbd\x12\x8f\x54\xc2\xd3\x33\x54\x57\xac\xf3\x73\x31\x76\x6e" "\x47\x23\x91\xe3\x58\xc3\xb3\x77\x32\x7a\xc9\xec\xc3\x4f\x24\xc9\xae" "\x15\x3e\xc6\x0a\xc0\x69\x4d\xc5\x5b\xff\x9f\x5f\x45\xf9\x04\x00\x00" "\x00\x00\x00\x00\x00\xd6\xb2\xc5\xea\x13\x93\xfd\xf2\x42\x85\xbf\x16" "\xb9\x9c\x9c\xc0\xad\x18\x57\x21\x6f\x1a\x98\x5f\x36\x91\x91\xae\x95" "\x4f\xeb\xb3\xdf\x46\x4b\xfe\x0f\x7f\x3e\xe9\xaf\xe7\xbe\xfb\x89\xd2" "\x77\x73\x99\xf5\x87\x4c\x55\x3a\xeb\x37\x29\xcf\xfe\x86\xe6\x69\x64" "\xae\x09\xbb\x6d\x16\x31\x18\xe4\xcb\xe0\x24\xfd\x45\x00\xf8\xff\x07" "\x00\x00\x00\x00\xcc\x9d\x80\x46\xc2\x16\xc1\xf8\x95\x77\x8c\xb2\x51" "\x22\xa2\xa9\xf9\xb4\x44\xae\xad\xea\x2a\x40\xda\x8d\xac\xcf\x08\x08" 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"\x50\xa3\x6a\x54\xc8\x32\xe4\x5b\x25\x69\xdc\x0d\x90\xb0\x75\x22\x5f" "\xde\x44\xc4\xe0\x97\x31\x71\xad\x47\xd6\xb0\xfd\xf9\x74\x3a\xf9\x32" "\xcd\x6d\xb4\x9a\x47\x61\x38\x08\xba\xd9\x59\x71\x03\x00\x00\x00\x00" "\x00\x00\x00\x83\x2d\x0a\x45\xfa\x42\x42\xe2\x4c\x7e\x80\x00\x03\xc9" "\xe8\x09\x5e\x02\x98\x5f\x28\xe6\x78\xf6\x64\x22\x43\x6f\x94\x9e\x2a" "\xb8\xf1\x62\xd7\xe3\xf8\x55\xe3\x78\xf4\xa1\xf4\x0b\x0c\x6f\xb2\xd4" "\xb2\x05\xa8\x00\xb6\xd7\x13\xac\xeb\xc5\xb0\x14\xe6\x1a\x54\x3a\x5a" "\x19\x4f\x9a\xc1\x8d\x76\xb5\x44\x0e\x3b\x1a\x56\x9e\x73\x97\xf6\xca" "\xfa\x86\x96\x6d\x7b\xa1\x9e\x72\x04\x13\x26\x7a\x6c\xce\xa9\xc4\x39" "\x67\x1d\x2c\x68\x0f\x27\x53\xca\x18\x4e\xee\xb8\x43\x45\x03\x68\xac" "\xb4\x38\x3a\x01\xd2\x5e\xb3\xd1\xe2\x3e\x0f\x26\x45\xd1\xcd\xfa\x9f" "\xa4\x10\x63\x2f\x95\xa5\xf6\x22\xf8\x51\xc6\x6e\xe7\xe3\x03\x93\xcd" "\x7a\x4d\x67\xff\x2a\x49\xc4\xf9\x3c\x09\x84\xb5\xc2\xd4\x52\x34\x97" "\xe4\xd6\x4f\x95\xf0\x84\x93\x56\x4a\x1d\xf8\x71\x11\xc9\xbf\x31\x94" "\xfe\xf9\x7d\xce\xcc\x46\x7a\xce\x45\xfe\xeb\x68\x5c\x58\x70\xd0\x5f" "\x88\xa0\xf4\x63\xdb\x88\xd3\x77\x44\x2e\x13\x49\xac\xaf\x76\x62\x18" "\xb5\x4a\x9d\x62\x47\x78\xe1\xc4\xe0\x64\xc9\x8e\x49\x41\x98\x27\x6e" "\xb2\xdf\x77\x66\x41\x1b\xef\x0e\xbb\x50\x00\x00\x00\x00\x00\x60\x65" "\xd6\x35\xb0\xb7\xa0\x0e\xe7\x67\x22\x1d\x8a\xf9\x75\x33\x87\xe0\xcd" "\x8d\x71\x8f\x54\xa2\x9d\xf6\xeb\xa3\xbd\x4c\x44\x0e\x6e\x21\x72\xe3" "\xfc\xc0\x1b\x8b\xab\xb7\x57\xb5\xc5\x92\x17\xb8\x0d\x0d\xb3\xba\x58" "\x28\x14\xa6\x04\xe4\xef\x7a\x80\x3e\x9c\xa7\xc8\x5b\x35\xc9\xb9\x3a" "\x9e\x08\x85\xe2\x38\xb4\x4a\xe1\xc2\xe6\x4c\xce\x3b\x27\x08\x3b\x82" "\x46\x82\x9e\x64\x05\x60\x00\x30\x2b\xff\xff\x15\x40\x5b\xd5\xf2\xeb" "\xa2\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x9a\x98\x23\xfd\x8f\xbc\x5a\xa1\x65\x09\x9c\x5e\xd0\x32\xb4" "\x8e\xa1\x2d\x8e\x05\x88\xdc\x52\x70\x2e\x40\x84\x91\x3a\x06\xd4\x68" "\xd0\x92\x8b\xad\x76\xd6\x97\xe1\xf8\x5a\xb0\x30\xe7\x88\xd3\x87\x88" "\xee\x5b\x54\x28\xd4\xa9\x71\xcc\x97\xdb\x9f\xd2\x31\x08\x8e\x57\x07" "\x35\xce\x12\x9e\x7e\x77\xfc\x27\x77\x69\x26\x64\xa1\x48\x8f\xd8\xd6" "\xdf\xf4\xda\xd6\x18\xfd\x54\xf5\x29\xd4\x55\x5c\x65\x07\x00\x9e\xe6" "\x9d\xd1\xbc\x55\x25\x87\x89\xb2\x40\x52\x13\x7e\x96\x37\xf3\xef\xba" "\xb7\x17\x20\xf8\x8c\x3c\x44\xb3\xb7\x48\x6f\x97\x9e\x8a\x31\xb1\x6a" "\xc5\xfb\x73\xfe\x0e\x52\x39\xc0\x00\xbe\x27\x33\xc4\x95\x46\xf6\xe8" "\xa9\x17\x5e\xc6\xf1\x4d\xbf\x72\xca\xc9\x16\x43\xb2\xfd\x99\xc2\x9e" "\xca\x28\xa3\xc2\xe6\x0d\x5e\x5b\x87\x95\xfa\xe1\x6a\x7c\x3e\xa5\x7e" "\x72\x8e\xca\x35\xea\xf0\x15\x5a\x39\xf9\x75\x80\xe0\x79\x17\x54\x26" "\xc0\x88\xa0\x20\x80\x40\x98\x2a\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\x51\xce\xaa\xf0\x15\x9f\xe6\x1f\x2e\xad\xe7\x60\x3d" "\x0a\x7a\x56\xfb\x09\xcd\x11\x9a\xc0\x6a\xdb\x65\x97\x15\x5a\xe4\x78" "\x46\x89\x2b\xb4\x23\xc0\x24\xd8\xcb\xe9\x24\x0b\x71\xec\x6d\xc2\x12" "\x4d\x3a\x19\xe2\xd7\x14\xb2\x73\xd9\x5d\x1d\x3a\xa7\x37\xcb\x04\xa3" "\x36\x15\xff\x2a\x73\x0e\x51\x06\x7d\x5d\x67\x5d\x71\x22\x36\x1c\x37" "\xc6\x1a\x43\xb5\xaf\xd8\x65\xb6\x0d\x4c\xae\x89\x1b\x73\x22\x0f\x17" "\xd2\x59\x85\xa7\xf7\x68\x34\x99\x5e\x53\xa9\x3a\x1c\x7b\x9e\xef\x26" "\x7d\xf6\x91\xca\x98\x3a\x0b\x15\xbd\xa7\xf6\xc5\xc1", 2954); *(uint64_t*)0x20000090 = 0; *(uint32_t*)0x20000098 = 0; *(uint32_t*)0x2000009c = 0; *(uint64_t*)0x200000a0 = 0; *(uint32_t*)0x200000a8 = 0; *(uint32_t*)0x200000ac = 0; memset((void*)0x200000b0, 0, 16); *(uint32_t*)0x200000c0 = 0; *(uint32_t*)0x200000c4 = 0; *(uint32_t*)0x200000c8 = -1; *(uint32_t*)0x200000cc = 8; *(uint64_t*)0x200000d0 = 0; *(uint32_t*)0x200000d8 = 0; *(uint32_t*)0x200000dc = 0x10; *(uint64_t*)0x200000e0 = 0; *(uint32_t*)0x200000e8 = 0; *(uint32_t*)0x200000ec = 0; *(uint32_t*)0x200000f0 = -1; *(uint32_t*)0x200000f4 = 0; *(uint64_t*)0x200000f8 = 0; *(uint64_t*)0x20000100 = 0; *(uint32_t*)0x20000108 = 0x10; *(uint32_t*)0x2000010c = 0; *(uint32_t*)0x20000110 = 0; syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000080ul, /*size=*/0x90ul); break; } } 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); setup_sysctl(); setup_cgroups(); const char* reason; (void)reason; if ((reason = setup_binfmt_misc())) printf("the reproducer may not work as expected: binfmt_misc setup failed: " "%s\n", reason); if ((reason = setup_usb())) printf("the reproducer may not work as expected: USB injection setup " "failed: %s\n", reason); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; }