// https://syzkaller.appspot.com/bug?id=f0beeabf36434bf4cb12c9459ba9ee4dc3983c3b
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

#ifndef SYS___vfork14
#define SYS___vfork14 282
#endif
#ifndef SYS_fcntl
#define SYS_fcntl 92
#endif
#ifndef SYS_fktrace
#define SYS_fktrace 288
#endif
#ifndef SYS_getpgrp
#define SYS_getpgrp 81
#endif
#ifndef SYS_mmap
#define SYS_mmap 197
#endif
#ifndef SYS_open
#define SYS_open 5
#endif
#ifndef SYS_pipe
#define SYS_pipe 42
#endif
#ifndef SYS_ptrace
#define SYS_ptrace 26
#endif
#ifndef SYS_read
#define SYS_read 3
#endif
#ifndef SYS_recvfrom
#define SYS_recvfrom 29
#endif
#ifndef SYS_writev
#define SYS_writev 121
#endif

static unsigned long long procid;

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 (;;) {
      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[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0x0, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  res = syscall(SYS_pipe, /*pipefd=*/0x20001680ul);
  if (res != -1) {
    r[0] = *(uint32_t*)0x20001680;
    r[1] = *(uint32_t*)0x20001684;
  }
  memcpy((void*)0x20000480, "./file0\000", 8);
  res = syscall(SYS_open, /*file=*/0x20000480ul, /*flags=*/0x80000000000206ul,
                /*mode=*/0x4ebfac6bbaf7949ul);
  if (res != -1)
    r[2] = res;
  res = syscall(SYS_getpgrp);
  if (res != -1)
    r[3] = res;
  syscall(SYS_ptrace, /*request=*/9ul, /*pid=*/r[3], /*addr=*/0ul,
          /*data=*/0ul);
  syscall(SYS_writev, /*fd=*/-1, /*vec=*/0x20000200ul, /*vlen=*/0ul);
  syscall(SYS_fktrace, /*fd=*/r[2], /*ops=*/4ul, /*trpoints=*/0x40ul,
          /*pid=*/r[3]);
  syscall(SYS_fcntl, /*fd=*/r[1], /*cmd=*/0xaul, /*arg=*/-1);
  syscall(SYS___vfork14);
  res = syscall(SYS_open, /*file=*/0ul, /*flags=*/0x100ul,
                /*mode=*/0x4ebfac6bbaf7949ul);
  if (res != -1)
    r[4] = res;
  syscall(SYS_writev, /*fd=*/r[4], /*vec=*/0ul, /*vlen=*/0ul);
  syscall(SYS_fcntl, /*fd=*/r[4], /*cmd=*/0ul, /*arg=*/r[4]);
  *(uint16_t*)0x200001c0 = 1;
  *(uint8_t*)0x200001c2 = 0;
  *(uint32_t*)0x200001c4 = 0x4e23 + procid * 4;
  syscall(SYS_recvfrom, /*fd=*/r[0], /*buf=*/0x20000180ul, /*len=*/0xaul,
          /*f=*/0x2000ul, /*addr=*/0x200001c0ul, /*addrlen=*/8ul);
  syscall(SYS_read, /*fd=*/r[4], /*buf=*/0x20000140ul, /*count=*/4ul);
}
int main(void)
{
  syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/3ul,
          /*flags=*/0x1012ul, /*fd=*/-1, /*pad=*/0ul, /*offset=*/0ul);
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}