linux-kernel - Re: [PATCH v2 0/6] fixes for debugfs/wireless locking issue

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Message-ID: <7979003a-6aa2-9af7-a3cf-d946c8e47a15@candelatech.com>
Date:   Tue, 28 Nov 2023 07:48:13 -0800
From:   Ben Greear <greearb@...delatech.com>
To:     Johannes Berg <johannes@...solutions.net>,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH v2 0/6] fixes for debugfs/wireless locking issue

On 11/24/23 08:25, Johannes Berg wrote:
> There's a locking issue in wireless where it takes a lock inside
> a debugfs file handler that's also taken around the removal of
> the debugfs file, and this causes a deadlock due to the proxy
> object use. Fixing the debugfs removal is tricky because some
> of the objects represented there fundamentally are deleted with
> the lock held. Not taking the lock in the debugfs file is also
> not really the right thing to do. Therefore, right now, the only
> way to fix this would be to not have the debugfs files entirely,
> but that isn't really helpful either.

I have been running the RFC series and haven't noticed problems, so you
can add:

Tested-by: Ben Greear <greearb@...delatech.com>

Thanks,
Ben

-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com