syzkaller-repros/linux/e86371dd7b6835334a55daec02e21a6449d83076.c

// possible deadlock in shmem_file_llseek
// https://syzkaller.appspot.com/bug?id=e86371dd7b6835334a55daec02e21a6449d83076
// status:fixed
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <stdint.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

long r[1];
void loop()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
  memcpy((void*)0x20b2fff4, "/dev/ashmem", 12);
  r[0] = syscall(__NR_openat, 0xffffffffffffff9c, 0x20b2fff4, 0, 0);
  syscall(__NR_ioctl, r[0], 0x40087703, 2);
  syscall(__NR_mmap, 0x206ff000, 0x3000, 0, 0x12, r[0], 0);
  syscall(__NR_lseek, r[0], 0, 3);
}

int main()
{
  loop();
  return 0;
}