Re: [PATCH] fs/pidfs: when time ns disabled add check for ioctl

[Matthew Wilcox]

On Sun, Jul 21, 2024 at 02:23:12PM +0800, Edward Adam Davis wrote:
> syzbot call pidfd_ioctl() with cmd "PIDFD_GET_TIME_NAMESPACE" and disabled
> CONFIG_TIME_NS, since time_ns is NULL, it will make NULL ponter deref in
> open_namespace.

what about PIDFD_GET_TIME_FOR_CHILDREN_NAMESPACE?