// https://syzkaller.appspot.com/bug?id=25e00dd59f31783f233185cb60064b0ab645310f
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/prctl.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}
#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

static uint64_t current_time_ms()
{
  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    fail("clock_gettime failed");
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void execute_one();
extern unsigned long long procid;

static void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      fail("clone failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      execute_one();
      doexit(0);
    }

    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      int res = waitpid(-1, &status, __WALL | WNOHANG);
      if (res == pid) {
        break;
      }
      usleep(1000);
      if (current_time_ms() - start < 3 * 1000)
        continue;
      kill(-pid, SIGKILL);
      kill(pid, SIGKILL);
      while (waitpid(-1, &status, __WALL) != pid) {
      }
      break;
    }
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffff};
void execute_one()
{
  long res = 0;
  memcpy((void*)0x20000200, "/dev/infiniband/rdma_cm", 24);
  res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000200, 2, 0);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20008880 = 0;
  *(uint16_t*)0x20008884 = 0x18;
  *(uint16_t*)0x20008886 = 0xfa00;
  *(uint64_t*)0x20008888 = 0;
  *(uint64_t*)0x20008890 = 0x20008840;
  *(uint16_t*)0x20008898 = 0x13f;
  *(uint8_t*)0x2000889a = 0;
  *(uint8_t*)0x2000889b = 0;
  *(uint8_t*)0x2000889c = 0;
  *(uint8_t*)0x2000889d = 0;
  *(uint8_t*)0x2000889e = 0;
  *(uint8_t*)0x2000889f = 0;
  res = syscall(__NR_write, r[0], 0x20008880, 0x20);
  if (res != -1)
    r[1] = *(uint32_t*)0x20008840;
  *(uint32_t*)0x20000000 = 3;
  *(uint16_t*)0x20000004 = 0x40;
  *(uint16_t*)0x20000006 = 0xfa00;
  *(uint16_t*)0x20000008 = 0xa;
  *(uint16_t*)0x2000000a = htobe16(0);
  *(uint32_t*)0x2000000c = 0;
  *(uint8_t*)0x20000010 = 0;
  *(uint8_t*)0x20000011 = 0;
  *(uint8_t*)0x20000012 = 0;
  *(uint8_t*)0x20000013 = 0;
  *(uint8_t*)0x20000014 = 0;
  *(uint8_t*)0x20000015 = 0;
  *(uint8_t*)0x20000016 = 0;
  *(uint8_t*)0x20000017 = 0;
  *(uint8_t*)0x20000018 = 0;
  *(uint8_t*)0x20000019 = 0;
  *(uint8_t*)0x2000001a = 0;
  *(uint8_t*)0x2000001b = 0;
  *(uint8_t*)0x2000001c = 0;
  *(uint8_t*)0x2000001d = 0;
  *(uint8_t*)0x2000001e = 0;
  *(uint8_t*)0x2000001f = 0;
  *(uint32_t*)0x20000020 = 0;
  *(uint16_t*)0x20000024 = 0xa;
  *(uint16_t*)0x20000026 = htobe16(0);
  *(uint32_t*)0x20000028 = 0;
  *(uint64_t*)0x2000002c = htobe64(0xfe80000000000000);
  *(uint64_t*)0x20000034 = htobe64(0xa);
  *(uint32_t*)0x2000003c = 0;
  *(uint32_t*)0x20000040 = r[1];
  *(uint32_t*)0x20000044 = 0;
  syscall(__NR_write, r[0], 0x20000000, 0x48);
  *(uint32_t*)0x20000340 = 7;
  *(uint16_t*)0x20000344 = 0;
  *(uint16_t*)0x20000346 = 0xfa00;
  *(uint32_t*)0x20000348 = r[1];
  *(uint32_t*)0x2000034c = 0;
  syscall(__NR_write, r[0], 0x20000340, 0x1e1);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  for (;;) {
    loop();
  }
}