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Date: Tue, 9 Jun 2015 15:17:15 +0200 (CEST)
From: Thomas Gleixner <tglx@linutronix.de>
To: Mason <slash.tmp@free.fr>
cc: LKML <linux-kernel@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>
Subject: Re: [IRQ] Buggy driver makes __setup_irq segfault
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On Tue, 9 Jun 2015, Mason wrote:
> I'm a noob, so I suppose this behavior is expected, but I'm reporting it,
> just in case. (I tested with 3.14.41)
> 
> Consider this buggy driver, calling request_irq() multiple times,
> and not calling free_irq in the cleanup routine.

Not freeing things in the module exit code will make stuff explode,
not only interrupts. So yes, it's expected behaviour.

Thanks,

	tglx