// https://syzkaller.appspot.com/bug?id=d5222b3e1659e0aea19df562c79f216515740daa
// 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[3] = {0xffffffffffffffff, 0xffffffff, 0xffffffffffffffff};
unsigned long long procid;
void execute_one()
{
  long res = 0;
  memcpy((void*)0x20000140, "/dev/infiniband/rdma_cm", 24);
  res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000140, 2, 0);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000100 = 0;
  *(uint16_t*)0x20000104 = 0x18;
  *(uint16_t*)0x20000106 = 0xfa00;
  *(uint64_t*)0x20000108 = 4;
  *(uint64_t*)0x20000110 = 0x20000080;
  *(uint16_t*)0x20000118 = 0x111;
  *(uint8_t*)0x2000011a = 0;
  *(uint8_t*)0x2000011b = 0;
  *(uint8_t*)0x2000011c = 0;
  *(uint8_t*)0x2000011d = 0;
  *(uint8_t*)0x2000011e = 0;
  *(uint8_t*)0x2000011f = 0;
  res = syscall(__NR_write, r[0], 0x20000100, 0x20);
  if (res != -1)
    r[1] = *(uint32_t*)0x20000080;
  *(uint32_t*)0x20000200 = 3;
  *(uint16_t*)0x20000204 = 0x40;
  *(uint16_t*)0x20000206 = 0xfa00;
  *(uint16_t*)0x20000208 = 0xa;
  *(uint16_t*)0x2000020a = htobe16(0);
  *(uint32_t*)0x2000020c = 0;
  *(uint8_t*)0x20000210 = 0;
  *(uint8_t*)0x20000211 = 0;
  *(uint8_t*)0x20000212 = 0;
  *(uint8_t*)0x20000213 = 0;
  *(uint8_t*)0x20000214 = 0;
  *(uint8_t*)0x20000215 = 0;
  *(uint8_t*)0x20000216 = 0;
  *(uint8_t*)0x20000217 = 0;
  *(uint8_t*)0x20000218 = 0;
  *(uint8_t*)0x20000219 = 0;
  *(uint8_t*)0x2000021a = 0;
  *(uint8_t*)0x2000021b = 0;
  *(uint8_t*)0x2000021c = 0;
  *(uint8_t*)0x2000021d = 0;
  *(uint8_t*)0x2000021e = 0;
  *(uint8_t*)0x2000021f = 0;
  *(uint32_t*)0x20000220 = 0;
  *(uint16_t*)0x20000224 = 0xa;
  *(uint16_t*)0x20000226 = htobe16(0);
  *(uint32_t*)0x20000228 = 0;
  *(uint8_t*)0x2000022c = 0xfe;
  *(uint8_t*)0x2000022d = 0x80;
  *(uint8_t*)0x2000022e = 0;
  *(uint8_t*)0x2000022f = 0;
  *(uint8_t*)0x20000230 = 0;
  *(uint8_t*)0x20000231 = 0;
  *(uint8_t*)0x20000232 = 0;
  *(uint8_t*)0x20000233 = 0;
  *(uint8_t*)0x20000234 = 0;
  *(uint8_t*)0x20000235 = 0;
  *(uint8_t*)0x20000236 = 0;
  *(uint8_t*)0x20000237 = 0;
  *(uint8_t*)0x20000238 = 0;
  *(uint8_t*)0x20000239 = 0;
  *(uint8_t*)0x2000023a = 0;
  *(uint8_t*)0x2000023b = 0x10;
  *(uint32_t*)0x2000023c = 0x8000;
  *(uint32_t*)0x20000240 = r[1];
  *(uint32_t*)0x20000244 = 8;
  syscall(__NR_write, r[0], 0x20000200, 0x48);
  memcpy((void*)0x200002c0, "/dev/infiniband/rdma_cm", 24);
  res = syscall(__NR_openat, 0xffffffffffffff9c, 0x200002c0, 2, 0);
  if (res != -1)
    r[2] = res;
  *(uint32_t*)0x20000040 = 0x12;
  *(uint16_t*)0x20000044 = 0x10;
  *(uint16_t*)0x20000046 = 0xfa00;
  *(uint64_t*)0x20000048 = 0x20000280;
  *(uint32_t*)0x20000050 = r[1];
  *(uint32_t*)0x20000054 = r[0];
  syscall(__NR_write, r[2], 0x20000040, 0x18);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  for (procid = 0; procid < 8; procid++) {
    if (fork() == 0) {
      for (;;) {
        loop();
      }
    }
  }
  sleep(1000000);
  return 0;
}