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Date:   Mon, 27 Jun 2022 10:51:02 +0100
From:   John Keeping <john@metanate.com>
To:     andreadaoud6@gmail.com
Cc:     Valentin Schneider <valentin.schneider@arm.com>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        linux-rt-users@vger.kernel.org
Subject: Re: [RT] BUG in sched/cpupri.c
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 <20220627020204.29132-1-andreadaoud6@gmail.com>
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On Mon, Jun 27, 2022 at 10:02:04AM +0800, andreadaoud6@gmail.com wrote:
> I'm encountering this problem today with linux 5.15.5 rt22 kernel.
> This bug leads to an unstable system. Having read all your discussions, I know
> there is a workaround, but it doesn't seem that everybody agrees this.
> I'd like to know if this problem is solved in later rt patch series.
> If yes, could someone be more specific which patch solves it?
> If not, is applying the above mentioned workaround patch the best solution?

Valentin was fixed this in 49bef33e4b87 ("sched/rt: Plug
rt_mutex_setprio() vs push_rt_task() race") which was backported to
v5.15.33, so updating to the latest v5.15 stable release will pull in
the fix.