Re: Shutdown-time hangs in -next in locktorture
From: Peter Zijlstra
Date: Sat Dec 20 2025 - 07:52:05 EST
On Fri, Dec 19, 2025 at 04:29:26PM -0800, Paul E. McKenney wrote:
> Hello, Peter,
>
> I started hitting shutdown-time hangs in next-20251217 which persist
> in next-20251219. This hang happens on both x86 and arm64. Once I
> figured out that the failure is high probability, but not deterministic,
> bisection converged here:
>
> 5d1f0b2f278e ("sched/core: Rework sched_class::wakeup_preempt() and rq_modified_*()")
That commit no longer exists in tip/sched/core; it was fixed a few days
ago, except other problems made -next use an old tip branch which has
caused this fix to have delayed visibility :-(