linux-kernel - Re: [BUG] KCSAN: data-race in process_one_work / process_one

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Message-ID: <ZOUR-Apz2Tws4d2c@slm.duckdns.org>
Date:   Tue, 22 Aug 2023 09:52:24 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Mirsad Todorovac <mirsad.todorovac@....unizg.hr>
Cc:     linux-kernel@...r.kernel.org,
        Lai Jiangshan <jiangshanlai@...il.com>
Subject: Re: [BUG] KCSAN: data-race in process_one_work / process_one_work

On Fri, Aug 18, 2023 at 01:58:27PM +0200, Mirsad Todorovac wrote:
> Just as an exercise, this seems to work, but it is probably not very clean and not very scalable:

pwq is already per-cpu. It's not strictly accessed per-cpu because workers
can go unbound but given that it's a stat counter, that doesn't really
matter all that much. Sounds like it should be marked so that kcsan ignores
it.

Thanks.

-- 
tejun