On Tue, 2023-08-22 at 15:20 +0300, Mikko Rapeli wrote:
> Hi,
> 
> On Tue, Aug 22, 2023 at 12:47:04PM +0100, Richard Purdie wrote:
> > so between 6.1.38 and 6.1.39?
> 
> Maybe:
> 
> commit b1cdc56bc177c2e182c204bb08ad4e87bfd67942
> Author:     Paul E. McKenney <[email protected]>
> AuthorDate: Wed Apr 26 11:11:29 2023 -0700
> Commit:     Greg Kroah-Hartman <[email protected]>
> CommitDate: Wed Jul 19 16:21:01 2023 +0200
> 
>     rcu-tasks: Stop rcu_tasks_invoke_cbs() from using never-onlined CPUs
> 
> and
> 
> commit d58f0f0ce6332ffeb406540295cc49732c26fb51
> Author:     Paul E. McKenney <[email protected]>
> AuthorDate: Thu Apr 27 10:50:47 2023 -0700
> Commit:     Greg Kroah-Hartman <[email protected]>
> CommitDate: Wed Jul 19 16:21:01 2023 +0200
> 
>     rcu: Make rcu_cpu_starting() rely on interrupts being disabled
> 
> ?
> 
> master branch seems to have larger set of changes to rcu.

I wondered that but my test says
deda0761dc6161f03278da4679d96d4727992e91 is "good" which is after
those.

> Maybe locking debugging options could help to find this on every boot.

Perhaps. I think given where I'm at now I'll just try and bisect it...

> Then wasn't
> 
> commit 77cc52f1b8d76c995648cb4286e57142cac8ce0a
> Author:     Wen Yang <[email protected]>
> AuthorDate: Fri May 5 00:12:53 2023 +0800
> Commit:     Greg Kroah-Hartman <[email protected]>
> CommitDate: Wed Jul 19 16:20:59 2023 +0200
> 
>     tick/rcu: Fix bogus ratelimit condition
>     
>     [ Upstream commit a7e282c77785c7eabf98836431b1f029481085ad ]
> 
> causing some issues too?

Yes, but I think this is something different...

Cheers,

Richard
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