r0 = syz_open_dev$tty20(0xc, 0x4, 0x1) fgetxattr(r0, &(0x7f0000000000)=@known='security.selinux\x00', &(0x7f0000000480)=""/4096, 0x1000) ioctl$TIOCSPGRP(0xffffffffffffffff, 0x5410, 0x0)