// 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 <pwd.h>
#include <setjmp.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 <time.h>
#include <unistd.h>

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
	if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
		exit(sig);
	}
	uintptr_t addr = (uintptr_t)info->si_addr;
	const uintptr_t prog_start = 1 << 20;
	const uintptr_t prog_end = 100 << 20;
	int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
	int valid = addr < prog_start || addr > prog_end;
	if (skip && valid) {
		_longjmp(segv_env, 1);
	}
	exit(sig);
}

static void install_segv_handler(void)
{
	struct sigaction sa;
	memset(&sa, 0, sizeof(sa));
	sa.sa_sigaction = segv_handler;
	sa.sa_flags = SA_NODEFER | SA_SIGINFO;
	sigaction(SIGSEGV, &sa, NULL);
	sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...) ({ int ok = 1; __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); if (_setjmp(segv_env) == 0) { __VA_ARGS__; } else ok = 0; __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); ok; })

static void 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 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 __attribute__((noinline)) remove_dir(const char* dir)
{
	DIR* dp = opendir(dir);
	if (dp == NULL) {
		if (errno == EACCES) {
			if (rmdir(dir))
	exit(1);
			return;
		}
	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);
		struct stat st;
		if (lstat(filename, &st))
	exit(1);
		if (S_ISDIR(st.st_mode)) {
			remove_dir(filename);
			continue;
		}
		if (unlink(filename)) {
	exit(1);
		}
	}
	closedir(dp);
	while (rmdir(dir)) {
	exit(1);
	}
}

#define CAST 

static void execute_one(void);

#define WAIT_FLAGS 0

static void loop(void)
{
	int iter = 0;
	for (;; iter++) {
		char cwdbuf[32];
		sprintf(cwdbuf, "./%d", iter);
		if (mkdir(cwdbuf, 0777))
	exit(1);
		int pid = fork();
		if (pid < 0)
	exit(1);
		if (pid == 0) {
			if (chdir(cwdbuf))
	exit(1);
			execute_one();
			exit(0);
		}
		int status = 0;
		uint64_t start = current_time_ms();
		for (;;) {
			if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
				break;
			sleep_ms(1);
			if (current_time_ms() - start < 5000)
				continue;
			kill_and_wait(pid, &status);
			break;
		}
		remove_dir(cwdbuf);
	}
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
		intptr_t res = 0;
	NONFAILING(memcpy((void*)0x20000000, "/dev/rvnd0c\000", 12));
	res = -1;
	NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000000, /*flags=O_EXLOCK*/0x20, /*mode=*/0));
	if (res != -1)
		r[0] = res;
	NONFAILING(memcpy((void*)0x20000080, "./file0\000", 8));
	res = -1;
	NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(open))(/*file=*/0x20000080, /*flags=O_NOFOLLOW|O_TRUNC|O_CREAT|O_APPEND|0x6*/0x70e, /*mode=*/0));
	if (res != -1)
		r[1] = res;
	NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x2000f000, /*len=*/0x2000, /*prot=PROT_EXEC*/4, /*flags=MAP_FIXED*/0x10, /*fd=*/r[1], /*offset=*/0));
	NONFAILING(*(uint64_t*)0x20001580 = 0);
	NONFAILING(*(uint64_t*)0x20001588 = 0);
	NONFAILING(*(uint64_t*)0x20001590 = 0);
	NONFAILING(*(uint64_t*)0x20001598 = 0);
	NONFAILING(*(uint64_t*)0x200015a0 = 0x200004c0);
	NONFAILING(memcpy((void*)0x200004c0, 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6\xd3\x9e\xa8\xe4\xb0\xb3\x7c", 3757));
	NONFAILING(*(uint64_t*)0x200015a8 = 0xead);
	NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(writev))(/*fd=*/r[1], /*vec=*/0x20001580, /*vlen=*/3));
	NONFAILING(*(uint64_t*)0x20000100 = 0x20000080);
	NONFAILING(memcpy((void*)0x20000080, "./file0\000", 8));
	NONFAILING(*(uint64_t*)0x20000108 = 0x4e3a78f2);
	NONFAILING(*(uint64_t*)0x20000110 = 0x200000c0);
	NONFAILING(memcpy((void*)0x200000c0, "./file0\000", 8));
	NONFAILING(*(uint32_t*)0x20000118 = 8);
	NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[0], /*cmd=*/0xc0384600, /*arg=*/0x20000100));

}
int main(void)
{
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0));
	install_segv_handler();
			use_temporary_dir();
			loop();
	return 0;
}