Re: [Regression] wifi problems since tg3 started throwing rcu stall warnings

[Mingcong Bai]

Hi Frederic,

<snip>

> Just in case, Mingcong Bai can you test the following patch without the
> revert and see if it triggers something?
>
> diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
> index 35949ec1f935..b4f8ed8138d3 100644
> --- a/kernel/rcu/tree.c
> +++ b/kernel/rcu/tree.c
> @@ -5170,6 +5170,7 @@ void rcutree_migrate_callbacks(int cpu)
>  	struct rcu_data *rdp = per_cpu_ptr(&rcu_data, cpu);
>  	bool needwake;
>
> +	WARN_ON_ONCE(1);
>  	if (rcu_rdp_is_offloaded(rdp))
>  		return;

Please find attached the dmesg with your patch (and no revert) against 
6.12-rc7.

Best Regards,
Mingcong Bai

> Thanks.
>
> > 							Thanx, Paul

Attachment: dmesg-tg3-warn-on-once.log
Description: application/json