r0 = epoll_create1(0x0)
r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r1, &(0x7f0000000040)={0x20000000})
r2 = syz_open_dev$tty20(0xc, 0x4, 0x0)
dup3(r2, r0, 0x0)