Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head

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Subject: Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
From: Steven Rostedt <rostedt@xxxxxxxxxxx>
Date: Tue, 18 Feb 2020 18:13:23 -0500
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>, rcu@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, kernel-team@xxxxxx, mingo@xxxxxxxxxx, jiangshanlai@xxxxxxxxx, dipankar@xxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, mathieu.desnoyers@xxxxxxxxxxxx, josh@xxxxxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, dhowells@xxxxxxxxxx, edumazet@xxxxxxxxxx, fweisbec@xxxxxxxxx, oleg@xxxxxxxxxx, joel@xxxxxxxxxxxxxxxxx
In-reply-to: <20200218225455.GN2935@paulmck-ThinkPad-P72>

On Tue, 18 Feb 2020 14:54:55 -0800
"Paul E. McKenney" <paulmck@xxxxxxxxxx> wrote:

>     This data race was reported by KCSAN.  Not appropriate for backporting
>     due to failure being unlikely and due to the mild consequences of the
>     failure, namely a confusing rcutorture console message.
>     

I've seen patches backported for less. :-/

Really, any statement that says something may go awry with the code,
will be an argument to backport it.

-- Steve

Follow-Ups:
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Paul E. McKenney

References:
- [PATCH tip/core/rcu 0/3] Tasks-RCU updates for v5.7
  - From: Paul E. McKenney
- [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: paulmck
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Peter Zijlstra
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Paul E. McKenney
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Peter Zijlstra
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Paul E. McKenney
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Peter Zijlstra
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Paul E. McKenney
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Steven Rostedt
- Re: [PATCH tip/core/rcu 1/3] rcu-tasks: *_ONCE() for rcu_tasks_cbs_head
  - From: Paul E. McKenney

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