// https://syzkaller.appspot.com/bug?id=906433df4abcde9bf8261b1c105f7a48418b8663
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE 

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <pthread.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/event.h>
#include <sys/ioctl.h>
#include <sys/ktrace.h>
#include <sys/mman.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <util.h>

static void kill_and_wait(int pid, int* status)
{
	kill(pid, SIGKILL);
	while (waitpid(-1, status, 0) != pid) {
	}
}

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);
}

typedef struct {
	pthread_mutex_t mu;
	pthread_cond_t cv;
	int state;
} event_t;

static void event_init(event_t* ev)
{
	if (pthread_mutex_init(&ev->mu, 0))
	exit(1);
	if (pthread_cond_init(&ev->cv, 0))
	exit(1);
	ev->state = 0;
}

static void event_reset(event_t* ev)
{
	ev->state = 0;
}

static void event_set(event_t* ev)
{
	pthread_mutex_lock(&ev->mu);
	if (ev->state)
	exit(1);
	ev->state = 1;
	pthread_mutex_unlock(&ev->mu);
	pthread_cond_broadcast(&ev->cv);
}

static void event_wait(event_t* ev)
{
	pthread_mutex_lock(&ev->mu);
	while (!ev->state)
		pthread_cond_wait(&ev->cv, &ev->mu);
	pthread_mutex_unlock(&ev->mu);
}

static int event_isset(event_t* ev)
{
	pthread_mutex_lock(&ev->mu);
	int res = ev->state;
	pthread_mutex_unlock(&ev->mu);
	return res;
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
	uint64_t start = current_time_ms();
	uint64_t now = start;
	pthread_mutex_lock(&ev->mu);
	for (;;) {
		if (ev->state)
			break;
		uint64_t remain = timeout - (now - start);
		struct timespec ts;
		ts.tv_sec = remain / 1000;
		ts.tv_nsec = (remain % 1000) * 1000 * 1000;
		pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
		now = current_time_ms();
		if (now - start > timeout)
			break;
	}
	int res = ev->state;
	pthread_mutex_unlock(&ev->mu);
	return res;
}

#define CAST 

static uintptr_t syz_open_pts(void)
{
	int master, slave;
	if (openpty(&master, &slave, NULL, NULL, NULL) == -1)
		return -1;
	if (dup2(master, master + 100) != -1)
		close(master);
	return slave;
}

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 < 4; 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);
			break;
		}
	}
	for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
		sleep_ms(1);
}

static void execute_one(void);

#define WAIT_FLAGS 0

static void loop(void)
{
	int iter = 0;
	for (;; iter++) {
		int pid = fork();
		if (pid < 0)
	exit(1);
		if (pid == 0) {
			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[1] = {0xffffffffffffffff};

void execute_call(int call)
{
		intptr_t res = 0;
	switch (call) {
	case 0:
		res = -1;
res = syz_open_pts();
		if (res != -1)
				r[0] = res;
		break;
	case 1:
*(uint32_t*)0x20000200 = 0;
*(uint32_t*)0x20000204 = 0;
*(uint32_t*)0x20000208 = 0;
*(uint32_t*)0x2000020c = 0;
memcpy((void*)0x20000210, "\xe3\xb7\xe2\x8c\xf9\x42\x0e\x90\xf7\x11\xfd\xca\x07\x00\x87\x00\x00\x04\x00\x00", 20);
*(uint32_t*)0x20000224 = 0;
*(uint32_t*)0x20000228 = 0;
((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x802c7416, /*arg=*/0x20000200);
		break;
	case 2:
*(uint64_t*)0x20000000 = 0x200000c0;
*(uint64_t*)0x20000008 = 0xaf;
((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(readv))(/*fd=*/r[0], /*vec=*/0x20000000, /*vlen=*/0x1000000000000339);
		break;
	case 3:
*(uint32_t*)0x20000080 = 6;
*(uint32_t*)0x20000084 = 0x100;
*(uint32_t*)0x20000088 = 2;
*(uint32_t*)0x2000008c = 0x1f;
memcpy((void*)0x20000090, "\x14\x07\x54\x07\x3a\xe5\x65\x95\xd9\xa4\x1d\xa0\x71\xc2\x78\xeb\x3f\x69\x65\x34", 20);
*(uint32_t*)0x200000a4 = 9;
*(uint32_t*)0x200000a8 = 3;
((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0x802c7416, /*arg=*/0x20000080);
		break;
	}

}
int main(void)
{
((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=*/3, /*flags=*/0x1012, /*fd=*/-1, /*offset=*/0);
			loop();
	return 0;
}