linux-kernel - Re: 3.17-rc1: leds blink workqueue causes sleeping BUGs

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Message-ID: <20140825213752.GD3070@type.youpi.perso.aquilenet.fr>
Date:	Mon, 25 Aug 2014 23:37:52 +0200
From:	Samuel Thibault <samuel.thibault@...-lyon.org>
To:	Sabrina Dubroca <sd@...asysnail.net>, Valdis.Kletnieks@...edu,
	Hugh Dickins <hughd@...gle.com>,
	Vincent Donnefort <vdonnefort@...il.com>,
	Bryan Wu <cooloney@...il.com>, linux-leds@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: 3.17-rc1: leds blink workqueue causes sleeping BUGs

Samuel Thibault, le Mon 25 Aug 2014 23:23:24 +0200, a écrit :
> We could indeed have a loop if the user was making the VT::* leds use
> the vt-* trigger,

Actually, while there can be a loop, it wouldn't be possible to inject
events in it: a VT::* led only makes the corresponding vt-* trigger if
it got an event from its trigger, etc. So it's really a false positive,
the lock detector just can not know that it can not happen.

Samuel
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