BUG: unable to handle kernel NULL pointer dereference in do_select

Hello, syzbot found the following crash on: HEAD commit:90368a37fbbe Merge tag 'printk-for-4.18-rc3' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1759737f80 kernel config: https://syzkaller.appspot.com/x/.config?x=a63be0c83e84d370

BUG: unable to handle kernel NULL pointer dereference in do_select

Hello, syzbot found the following crash on: HEAD commit:90368a37fbbe Merge tag 'printk-for-4.18-rc3' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1759737f80 kernel config: https://syzkaller.appspot.com/x/.config?x=a63be0c83e84d370