// https://syzkaller.appspot.com/bug?id=6dcd14a729df98f989c7b76d254226ae67084efd
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/syscall.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 <stdlib.h>
#include <string.h>
#include <sys/stat.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 void use_temporary_dir()
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    fail("failed to mkdtemp");
  if (chmod(tmpdir, 0777))
    fail("failed to chmod");
  if (chdir(tmpdir))
    fail("failed to chdir");
}

static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf));
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

static void test();

void loop()
{
  while (1) {
    test();
  }
}

#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_write
#define __NR_write 4
#endif
#ifndef __NR_readv
#define __NR_readv 145
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

long r[1];
uint64_t procid;
void test()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
  memcpy((void*)0x20000000, "/dev/sg#", 9);
  r[0] = syz_open_dev(0x20000000, 0, 2);
  *(uint32_t*)0x20001000 = 0;
  *(uint32_t*)0x20001004 = 6;
  *(uint16_t*)0x20001008 = 0;
  *(uint16_t*)0x2000100a = 0;
  *(uint32_t*)0x2000100c = 0;
  *(uint32_t*)0x20001010 = 0;
  *(uint32_t*)0x20001014 = 0;
  *(uint16_t*)0x20001018 = 0;
  *(uint16_t*)0x2000101a = 0;
  *(uint32_t*)0x2000101c = 7;
  *(uint32_t*)0x20001020 = 0;
  *(uint32_t*)0x20001024 = 0x2710;
  *(uint16_t*)0x20001028 = 9;
  *(uint16_t*)0x2000102a = 0;
  *(uint32_t*)0x2000102c = 0;
  *(uint32_t*)0x20001030 = 0;
  *(uint32_t*)0x20001034 = 0;
  *(uint16_t*)0x20001038 = 0;
  *(uint16_t*)0x2000103a = 0;
  *(uint32_t*)0x2000103c = 0;
  syscall(__NR_write, r[0], 0x20001000, 0x60);
  *(uint32_t*)0x20b16000 = 0x20dc8000;
  *(uint32_t*)0x20b16004 = 0xa5;
  syscall(__NR_readv, r[0], 0x20b16000, 1);
}

int main()
{
  char* cwd = get_current_dir_name();
  for (procid = 0; procid < 8; procid++) {
    if (fork() == 0) {
      for (;;) {
        if (chdir(cwd))
          fail("failed to chdir");
        use_temporary_dir();
        loop();
      }
    }
  }
  sleep(1000000);
  return 0;
}