Re: [PATCH bpf] bpf: fix NULL pointer dereference in bpf_task_from_vpid()

[Sechang Lim]

On Fri, Jun 05, 2026 at 09:59:49AM -0700, Yonghong Song wrote:
> In softirq context, I think we should return NULL for this kfunc.
> Your above fix solves crash problem. But even not crash, the
> below task 'p' may not be user expected since the 'current' (and
> its namespace) is random.
>
> Maybe we can do:
>
> +	if (in_interrupt())
> +		return NULL;
> +
> 	rcu_read_lock();
> 	...

Agreed. I'll send a v2 using this approach.

Thanks for the review.

Sechang