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Date:   Mon, 7 Oct 2019 18:14:57 +0200
From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     Julien Grall <julien.grall@arm.com>
Cc:     linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org,
        tglx@linutronix.de, aryabinin@virtuozzo.com, rostedt@goodmis.org,
        Andre Przywara <andre.przywara@arm.com>
Subject: Re: [RFC PATCH] lib/ubsan: Don't seralize UBSAN report
Message-ID: <20191007161457.zgenqi6fts3khmkg@linutronix.de>
References: <20190920100835.14999-1-julien.grall@arm.com>
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On 2019-09-20 11:08:35 [+0100], Julien Grall wrote:
> At the moment, UBSAN report will be serialized using a spin_lock(). On
> RT-systems, spinlocks are turned to rt_spin_lock and may sleep. This will
> result to the following splat if the undefined behavior is in a context
> that can sleep:
…
> So the lock usefulness seems pretty limited. Rather than trying to
> accomodate RT-system by switching to a raw_spin_lock(), the lock is now
> completely dropped.
> 
> Reported-by: Andre Przywara <andre.przywara@arm.com>
> Signed-off-by: Julien Grall <julien.grall@arm.com>

I just applied this to my RT tree. Is someone here feeling responsible
to apply this upstream?

Sebastian