Re: sched_ext/lavd hard lockup in old call_rcu_tasks_generic needadjust path

[Matt Fleming]

On Tue, Jun 09, 2026 at 04:23:23AM -0700, Paul E. McKenney wrote:
> 
> Does commenting out the 'call_rcu_tasks_generic+547' printk() avoid the
> issue?  If so, that printk() might be deferred or some such.
> 
> "But if you cannot trust printk(), what *can* you trust?"  ;-)

I tried this and it still crashes so apparently not! I'll keep digging
to find the real cause (it's somewhat cumbersome to reproduce this hard
lockup).