// https://syzkaller.appspot.com/bug?id=016814f413b437ebf8d530b3775e620a892cf584 // 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 #ifndef __NR_bpf #define __NR_bpf 321 #endif 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 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); } #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) 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 static void setup_common() { 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)) { } if (symlink("/dev/binderfs", "./binderfs")) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setsid(); 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); setup_common(); sandbox_common(); drop_caps(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); setup_binderfs(); loop(); 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_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); write_file("/proc/self/oom_score_adj", "1000"); } static void close_fds() { for (int fd = 3; fd < MAX_FDS; fd++) close(fd); } #define USLEEP_FORKED_CHILD (3 * 50 * 1000) static long handle_clone_ret(long ret) { if (ret != 0) { return ret; } usleep(USLEEP_FORKED_CHILD); syscall(__NR_exit, 0); while (1) { } } static long syz_clone(volatile long flags, volatile long stack, volatile long stack_len, volatile long ptid, volatile long ctid, volatile long tls) { long sp = (stack + stack_len) & ~15; long ret = (long)syscall(__NR_clone, flags & ~CLONE_VM, sp, ptid, ctid, tls); return handle_clone_ret(ret); } 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) { int i, call, thread; for (call = 0; call < 20; 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 == 5 ? 500 : 0) + (call == 13 ? 500 : 0) + (call == 14 ? 500 : 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) { int iter = 0; for (;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { 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; } } } uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0}; void execute_call(int call) { intptr_t res = 0; switch (call) { case 0: *(uint32_t*)0x20000540 = 0; *(uint32_t*)0x20000544 = 0x80; *(uint8_t*)0x20000548 = 1; *(uint8_t*)0x20000549 = 0xa8; *(uint8_t*)0x2000054a = 0x59; *(uint8_t*)0x2000054b = 0xf6; *(uint32_t*)0x2000054c = 0; *(uint64_t*)0x20000550 = 8; *(uint64_t*)0x20000558 = 0x10200; *(uint64_t*)0x20000560 = 5; STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 0, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 1, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 2, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 3, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 4, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 5, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 6, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 7, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 8, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 9, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 10, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 11, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 12, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 13, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 14, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 15, 2); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 17, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 18, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 19, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 20, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 21, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 22, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 23, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 24, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 25, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 26, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 27, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 28, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 29, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 30, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 31, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 32, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 33, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 34, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 35, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 1, 36, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 37, 1); STORE_BY_BITMASK(uint64_t, , 0x20000568, 0, 38, 26); *(uint32_t*)0x20000570 = 1; *(uint32_t*)0x20000574 = 0; *(uint64_t*)0x20000578 = 0; *(uint64_t*)0x20000580 = 0xf; *(uint64_t*)0x20000588 = 0x88048; *(uint64_t*)0x20000590 = 0x7ff; *(uint32_t*)0x20000598 = 0x100; *(uint32_t*)0x2000059c = 2; *(uint64_t*)0x200005a0 = 0xa5; *(uint32_t*)0x200005a8 = 0; *(uint16_t*)0x200005ac = 0; *(uint16_t*)0x200005ae = 0; *(uint32_t*)0x200005b0 = 0x10000; *(uint32_t*)0x200005b4 = 0; *(uint64_t*)0x200005b8 = 5; syscall(__NR_perf_event_open, /*attr=*/0x20000540ul, /*fd=*/-1, /*cpu=*/3ul, /*group=*/-1, /*flags=PERF_FLAG_PID_CGROUP|0x8*/ 0xcul); break; case 1: res = syscall(__NR_bpf, /*cmd=*/0x21ul, /*arg=*/0ul, /*size=*/0ul); if (res != -1) r[0] = res; break; case 2: *(uint64_t*)0x200000c0 = -1; syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40082404, /*period=*/0x200000c0ul); break; case 3: *(uint32_t*)0x20000000 = 2; *(uint32_t*)0x20000004 = 0x80; *(uint8_t*)0x20000008 = 0xe2; *(uint8_t*)0x20000009 = 0; *(uint8_t*)0x2000000a = 0; *(uint8_t*)0x2000000b = 0; *(uint32_t*)0x2000000c = 0; *(uint64_t*)0x20000010 = 0; *(uint64_t*)0x20000018 = 0; *(uint64_t*)0x20000020 = 0; STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 0, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 1, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 2, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 3, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 4, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 5, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 6, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 7, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 8, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 9, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 10, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 11, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 12, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 13, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 14, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 15, 2); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 17, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 18, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 19, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 20, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 21, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 22, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 23, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 24, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 25, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 26, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 27, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 28, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 29, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 30, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 31, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 32, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 33, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 34, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 35, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 36, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 37, 1); STORE_BY_BITMASK(uint64_t, , 0x20000028, 0, 38, 26); *(uint32_t*)0x20000030 = 0; *(uint32_t*)0x20000034 = 0; *(uint64_t*)0x20000038 = 0; *(uint64_t*)0x20000040 = 0; *(uint64_t*)0x20000048 = 0; *(uint64_t*)0x20000050 = 0; *(uint32_t*)0x20000058 = 0; *(uint32_t*)0x2000005c = 0; *(uint64_t*)0x20000060 = 0; *(uint32_t*)0x20000068 = 0; *(uint16_t*)0x2000006c = 0; *(uint16_t*)0x2000006e = 0; *(uint32_t*)0x20000070 = 0; *(uint32_t*)0x20000074 = 0; *(uint64_t*)0x20000078 = 0; res = syscall(__NR_perf_event_open, /*attr=*/0x20000000ul, /*pid=*/0, /*cpu=*/-1, /*group=*/-1, /*flags=*/0ul); if (res != -1) r[1] = res; break; case 4: *(uint32_t*)0x20000100 = 1; *(uint32_t*)0x20000104 = 0x80; *(uint8_t*)0x20000108 = 0; *(uint8_t*)0x20000109 = 0; *(uint8_t*)0x2000010a = 0; *(uint8_t*)0x2000010b = 0; *(uint32_t*)0x2000010c = 0; *(uint64_t*)0x20000110 = 0x3c43; *(uint64_t*)0x20000118 = 0; *(uint64_t*)0x20000120 = 0; STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 0, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 1, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 2, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 3, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 4, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 5, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 6, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 7, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 8, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 9, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 10, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 11, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 12, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 13, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 14, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 15, 2); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 17, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 18, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 19, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 20, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 21, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 22, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 23, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 24, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 25, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 26, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 27, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 28, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 29, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 30, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 31, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 32, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 33, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 34, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 35, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 36, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 37, 1); STORE_BY_BITMASK(uint64_t, , 0x20000128, 0, 38, 26); *(uint32_t*)0x20000130 = 0; *(uint32_t*)0x20000134 = 0; *(uint64_t*)0x20000138 = 0; *(uint64_t*)0x20000140 = 0; *(uint64_t*)0x20000148 = 0; *(uint64_t*)0x20000150 = 0; *(uint32_t*)0x20000158 = 0; *(uint32_t*)0x2000015c = 0; *(uint64_t*)0x20000160 = 0; *(uint32_t*)0x20000168 = 0; *(uint16_t*)0x2000016c = 0; *(uint16_t*)0x2000016e = 0; *(uint32_t*)0x20000170 = 0; *(uint32_t*)0x20000174 = 0; *(uint64_t*)0x20000178 = 0; syscall(__NR_perf_event_open, /*attr=*/0x20000100ul, /*pid=*/0, /*cpu=*/-1, /*group=*/r[1], /*flags=*/0ul); break; case 5: *(uint32_t*)0x20000200 = 0; *(uint32_t*)0x20000204 = 5; *(uint64_t*)0x20000208 = 0x20000940; memcpy((void*)0x20000940, "\x18\x00\x00\x00\x00\xaa\x72\x08\xe8\xe8\xd9\xed\x24\x09\x50\x94" "\x32\x83\x7b\x27\x80\x00\x53\x00\x00\x00\x00\xfa\xff\x00\x00\x94" "\x00\x00\x00\x0f\x81\x1d\x0b\x57\x5e\x69\x8b\xfb\x38\x3b\x80", 47); *(uint64_t*)0x20000210 = 0x20000180; memcpy((void*)0x20000180, "syzkaller\000", 10); *(uint32_t*)0x20000218 = 0; *(uint32_t*)0x2000021c = 0; *(uint64_t*)0x20000220 = 0; *(uint32_t*)0x20000228 = 0; *(uint32_t*)0x2000022c = 0; memset((void*)0x20000230, 0, 16); *(uint32_t*)0x20000240 = 0; *(uint32_t*)0x20000244 = 2; *(uint32_t*)0x20000248 = -1; *(uint32_t*)0x2000024c = 8; *(uint64_t*)0x20000250 = 0; *(uint32_t*)0x20000258 = 0; *(uint32_t*)0x2000025c = 0x10; *(uint64_t*)0x20000260 = 0; *(uint32_t*)0x20000268 = 0; *(uint32_t*)0x2000026c = 0; *(uint32_t*)0x20000270 = 0; *(uint32_t*)0x20000274 = 0; *(uint64_t*)0x20000278 = 0; *(uint64_t*)0x20000280 = 0; *(uint32_t*)0x20000288 = 0x10; *(uint32_t*)0x2000028c = 0; syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000200ul, /*size=*/0x80ul); break; case 6: syscall(__NR_perf_event_open, /*attr=*/0ul, /*pid=*/0, /*cpu=*/0xdul, /*group=*/r[0], /*flags=PERF_FLAG_FD_OUTPUT*/ 2ul); break; case 7: syscall(__NR_gettid); break; case 8: memcpy((void*)0x20000100, "memory.events\000", 14); syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000100ul, /*flags=*/0x100002ul, /*mode=*/0ul); break; case 9: *(uint32_t*)0x20000c80 = r[0]; *(uint32_t*)0x20000c84 = 0x20; *(uint64_t*)0x20000c88 = 0x20000c40; *(uint64_t*)0x20000c40 = 0; *(uint32_t*)0x20000c48 = 0; *(uint64_t*)0x20000c50 = 0x20000c00; syscall(__NR_bpf, /*cmd=*/0xful, /*arg=*/0x20000c80ul, /*size=*/0x10ul); break; case 10: res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0ul, /*flags=*/0x7a05ul, /*mode=*/0x1700ul); if (res != -1) r[2] = res; break; case 11: *(uint64_t*)0x20000180 = 0; syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x40086602, /*period=*/0x20000180ul); break; case 12: memcpy((void*)0x20000340, "full", 4); *(uint8_t*)0x20000344 = 0x20; sprintf((char*)0x20000345, "%020llu", (long long)7); *(uint8_t*)0x20000359 = 0x20; sprintf((char*)0x2000035a, "%020llu", (long long)0xffffa); *(uint8_t*)0x2000036e = 0; syscall(__NR_write, /*fd=*/-1, /*buf=*/0x20000340ul, /*len=*/0x2ful); break; case 13: *(uint32_t*)0x20000180 = 0x18; *(uint32_t*)0x20000184 = 5; *(uint64_t*)0x20000188 = 0x20000280; memcpy( (void*)0x20000280, "\x18\x01\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x4a\x64\xff\xec\x85" "\x00\x00\x00\x6d\x00\x00\x00\x85\x00\x00\x00\x05\x00\x00\x00\x95", 33); *(uint64_t*)0x20000190 = 0x20000100; memcpy((void*)0x20000100, "GPL\000", 4); *(uint32_t*)0x20000198 = 0; *(uint32_t*)0x2000019c = 0; *(uint64_t*)0x200001a0 = 0; *(uint32_t*)0x200001a8 = 0; *(uint32_t*)0x200001ac = 0; memset((void*)0x200001b0, 0, 16); *(uint32_t*)0x200001c0 = 0; *(uint32_t*)0x200001c4 = 2; *(uint32_t*)0x200001c8 = -1; *(uint32_t*)0x200001cc = 8; *(uint64_t*)0x200001d0 = 0; *(uint32_t*)0x200001d8 = 0; *(uint32_t*)0x200001dc = 0x10; *(uint64_t*)0x200001e0 = 0; *(uint32_t*)0x200001e8 = 0; *(uint32_t*)0x200001ec = 0; *(uint32_t*)0x200001f0 = 0; *(uint32_t*)0x200001f4 = 0; *(uint64_t*)0x200001f8 = 0; *(uint64_t*)0x20000200 = 0; *(uint32_t*)0x20000208 = 0x10; *(uint32_t*)0x2000020c = 0; res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000180ul, /*size=*/0x80ul); if (res != -1) r[3] = res; break; case 14: *(uint64_t*)0x200000c0 = 0x20000080; memcpy((void*)0x20000080, "sched_switch\000", 13); *(uint32_t*)0x200000c8 = r[3]; res = syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200000c0ul, /*size=*/0x10ul); if (res != -1) r[4] = res; break; case 15: syscall(__NR_bpf, /*cmd=*/0x21ul, /*arg=*/0ul, /*size=*/0ul); break; case 16: res = -1; res = syz_clone( /*flags=CLONE_NEWNET|CLONE_NEWPID|CLONE_NEWUSER|CLONE_NEWUTS|CLONE_CHILD_SETTID|0x848400*/ 0x75848400, /*stack=*/0, /*stack_len=*/0, /*parentid=*/0, /*childtid=*/0, /*tls=*/0); if (res != -1) r[5] = res; break; case 17: syscall(__NR_perf_event_open, /*attr=*/0ul, /*pid=*/r[5], /*cpu=*/4ul, /*group=*/r[4], /*flags=PERF_FLAG_FD_CLOEXEC|PERF_FLAG_FD_NO_GROUP*/ 9ul); break; case 18: *(uint32_t*)0x200002c0 = 4; *(uint32_t*)0x200002c4 = 0x80; *(uint8_t*)0x200002c8 = 6; *(uint8_t*)0x200002c9 = 0x81; *(uint8_t*)0x200002ca = 2; *(uint8_t*)0x200002cb = -1; *(uint32_t*)0x200002cc = 0; *(uint64_t*)0x200002d0 = 0x81; *(uint64_t*)0x200002d8 = 0xf4296dcb077eb582; *(uint64_t*)0x200002e0 = 1; STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 0, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 1, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 2, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 3, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 4, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 5, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 6, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 7, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 8, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 9, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 10, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 11, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 12, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 13, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 14, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 15, 2); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 17, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 18, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 19, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 20, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 21, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 22, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 23, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 24, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 25, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 26, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 27, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 28, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 29, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 30, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 31, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 32, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 33, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 34, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 1, 35, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 36, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 37, 1); STORE_BY_BITMASK(uint64_t, , 0x200002e8, 0, 38, 26); *(uint32_t*)0x200002f0 = 0; *(uint32_t*)0x200002f4 = 1; *(uint64_t*)0x200002f8 = 0x7e8e; *(uint64_t*)0x20000300 = 0x5ff7; *(uint64_t*)0x20000308 = 0x2890; *(uint64_t*)0x20000310 = 2; *(uint32_t*)0x20000318 = 5; *(uint32_t*)0x2000031c = 7; *(uint64_t*)0x20000320 = 4; *(uint32_t*)0x20000328 = 0x95d; *(uint16_t*)0x2000032c = 0xfff9; *(uint16_t*)0x2000032e = 0; *(uint32_t*)0x20000330 = 1; *(uint32_t*)0x20000334 = 0; *(uint64_t*)0x20000338 = 6; syscall(__NR_perf_event_open, /*attr=*/0x200002c0ul, /*pid=*/r[5], /*cpu=*/5ul, /*group=*/-1, /*flags=PERF_FLAG_FD_OUTPUT*/ 2ul); break; case 19: *(uint32_t*)0x20001080 = -1; *(uint32_t*)0x20001084 = 0xe0; *(uint64_t*)0x20001088 = 0x20000f80; *(uint32_t*)0x20000fb4 = 0; *(uint64_t*)0x20000fb8 = 0; *(uint32_t*)0x20000fe8 = 0; *(uint32_t*)0x20000fec = 0; *(uint64_t*)0x20000ff0 = 0; *(uint64_t*)0x20000ff8 = 0; *(uint32_t*)0x20001004 = 8; *(uint64_t*)0x20001008 = 0; *(uint32_t*)0x20001010 = 0; *(uint32_t*)0x20001014 = 0x10; *(uint64_t*)0x20001018 = 0x20000ec0; *(uint64_t*)0x20001020 = 0x20000f00; *(uint32_t*)0x20001028 = 8; *(uint32_t*)0x2000102c = 0x10; *(uint32_t*)0x20001030 = 8; *(uint32_t*)0x20001034 = 8; *(uint64_t*)0x20001038 = 0x20000f40; syscall(__NR_bpf, /*cmd=*/0xful, /*arg=*/0x20001080ul, /*size=*/0x10ul); 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); do_sandbox_none(); return 0; }