// https://syzkaller.appspot.com/bug?id=bda19bf6b14e7fddccf28ac6f0205c7df6d8c32e
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <sys/types.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/endian.h>
#include <sys/syscall.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#ifndef SYS___realpathat
#define SYS___realpathat 574
#endif

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 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 (;;) {
      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;
    }
  }
}

uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  res = syscall(SYS_socket, /*domain=*/2ul, /*type=SOCK_STREAM*/ 1ul,
                /*proto=*/0x84);
  if (res != -1)
    r[0] = res;
  syscall(SYS_setsockopt, /*fd=*/r[0], /*level=*/0x84, /*opt=*/3, /*val=*/0ul,
          /*len=*/0ul);
  syscall(SYS_connect, /*fd=*/r[0], /*addr=*/0ul, /*addrlen=*/0ul);
  *(uint16_t*)0x20000040 = 0;
  *(uint16_t*)0x20000042 = 0x4720;
  *(uint32_t*)0x20000044 = 0;
  *(uint32_t*)0x20000048 = 0;
  *(uint32_t*)0x2000004c = 0;
  syscall(SYS_setsockopt, /*fd=*/r[0], /*level=*/0x84, /*opt=*/0x21,
          /*val=*/0x20000040ul, /*len=*/0x10ul);
  syscall(SYS_sendto, /*fd=*/r[0], /*buf=*/0ul, /*len=*/0ul, /*f=*/0ul,
          /*addr=*/0ul, /*addrlen=*/0ul);
  *(uint8_t*)0x20000140 = 0x10;
  *(uint8_t*)0x20000141 = 2;
  *(uint16_t*)0x20000142 = htobe16(0x4e20);
  *(uint8_t*)0x20000144 = 0xac;
  *(uint8_t*)0x20000145 = 0x14;
  *(uint8_t*)0x20000146 = 0;
  *(uint8_t*)0x20000147 = 0xbb;
  memset((void*)0x20000148, 0, 8);
  syscall(SYS_connect, /*fd=*/-1, /*addr=*/0x20000140ul, /*addrlen=*/0x10ul);
  res = syscall(SYS_dup2, /*oldfd=*/-1, /*newfd=*/-1);
  if (res != -1)
    r[1] = res;
  syscall(SYS_sendto, /*fd=*/-1, /*buf=*/0x20000600ul, /*len=*/0ul, /*f=*/0ul,
          /*addr=*/0ul, /*addrlen=*/0ul);
  res = syscall(SYS_kqueue);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000040 = 0;
  *(uint16_t*)0x20000048 = 0xfff9;
  *(uint16_t*)0x2000004a = 9;
  *(uint32_t*)0x2000004c = 8;
  *(uint64_t*)0x20000050 = 4;
  *(uint64_t*)0x20000058 = 0;
  *(uint64_t*)0x20000060 = 0;
  *(uint64_t*)0x20000068 = 0;
  *(uint64_t*)0x20000070 = 7;
  *(uint64_t*)0x20000078 = 0x40000000000000;
  syscall(SYS_kevent, /*kqueue=*/r[2], /*changelist=*/0x20000040ul,
          /*nchanges=*/1ul, /*eventlist=*/0ul, /*nevents=*/0ul,
          /*timeout=*/0ul);
  res = syscall(SYS_socket, /*domain=AF_INET*/ 2ul, /*type=SOCK_STREAM*/ 1ul,
                /*proto=*/0);
  if (res != -1)
    r[3] = res;
  memcpy((void*)0x20000080,
         "bbr\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000",
         32);
  *(uint32_t*)0x200000a0 = 0;
  syscall(SYS_setsockopt, /*fd=*/r[3], /*level=*/6, /*optname=*/0x2000,
          /*optval=*/0x20000080ul, /*optlen=*/0x24ul);
  syscall(SYS_setsockopt, /*fd=*/r[3], /*level=*/6, /*optname=TCP_NODELAY*/ 1,
          /*optval=*/0ul, /*optlen=*/0ul);
  syscall(SYS_sendmsg, /*fd=*/r[3], /*msg=*/0ul, /*f=*/0ul);
  *(uint32_t*)0x20000000 = 0x1009;
  syscall(SYS_accept4, /*fd=*/r[3], /*peer=*/0x20001740ul,
          /*peerlen=*/0x20000000ul, /*flags=*/0ul);
  *(uint32_t*)0x200001c0 = 4;
  syscall(SYS_ioctl, /*fd=*/r[1], /*cmd=*/0x8004427cul, /*arg=*/0x200001c0ul);
  res = syscall(SYS_socket, /*domain=*/0x1cul, /*type=SOCK_SEQPACKET*/ 5ul,
                /*proto=*/0x84);
  if (res != -1)
    r[4] = res;
  memcpy((void*)0x20000000, "./file0\000", 8);
  syscall(SYS___realpathat, /*dirfd=*/r[4], /*path=*/0x20000000ul,
          /*buf=*/0x20000040ul, /*size=*/1ul, /*flags=*/0ul);
  *(uint8_t*)0x20000300 = 0x1c;
  *(uint8_t*)0x20000301 = 0x1c;
  *(uint16_t*)0x20000302 = htobe16(0x4e22);
  *(uint32_t*)0x20000304 = 0xfffffffe;
  *(uint64_t*)0x20000308 = htobe64(0);
  *(uint64_t*)0x20000310 = htobe64(1);
  *(uint32_t*)0x20000318 = 0x8be;
  syscall(SYS_connect, /*fd=*/r[4], /*addr=*/0x20000300ul, /*addrlen=*/0x1cul);
  memcpy((void*)0x20000180, "./file0\000", 8);
  syscall(SYS_fstatat, /*fd=*/-1, /*path=*/0x20000180ul, /*statbuf=*/0ul,
          /*flag=AT_SYMLINK_NOFOLLOW*/ 0x200ul);
  *(uint8_t*)0x20000240 = 0x10;
  *(uint8_t*)0x20000241 = 2;
  *(uint16_t*)0x20000242 = htobe16(0x4e22);
  *(uint8_t*)0x20000244 = 0xac;
  *(uint8_t*)0x20000245 = 0x14;
  *(uint8_t*)0x20000246 = 0;
  *(uint8_t*)0x20000247 = 0xbb;
  memset((void*)0x20000248, 0, 8);
  syscall(SYS_connect, /*fd=*/-1, /*addr=*/0x20000240ul, /*addrlen=*/0x10ul);
  syscall(SYS_rfork, /*flags=RFTSIGZMB|RFSIGSHARE|RFCFDG*/ 0x85000ul);
}
int main(void)
{
  syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}