linux-kernel - Re: [RFC] [PATCH] Fix misrouted interrupts deadlocks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 10 Nov 2006 15:12:30 +0100
From:	Ingo Molnar <mingo@...hat.com>
To:	Pavel Emelianov <xemul@...nvz.org>
Cc:	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	mingo@...e.hu, Kirill Korotaev <dev@...nvz.org>
Subject: Re: [RFC] [PATCH] Fix misrouted interrupts deadlocks

On Fri, 2006-11-10 at 16:55 +0300, Pavel Emelianov wrote:
> -                       int ok = misrouted_irq(irq);
> +                       int ok;
> +
> +                       spin_unlock(&desc->lock);
> +                       ok = misrouted_irq(irq);
> +                       spin_lock(&desc->lock); 

your fix looks reasonable to me - it's a thinko to call misrouted_irq()
with the descriptor lock still held. (btw., how did you find it -
lockdep spinlock debugging or NMI watchdog?)

Acked-by: Ingo Molnar <mingo@...hat.com>

	Ingo

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/