Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752946AbaBNQNJ (ORCPT ); Fri, 14 Feb 2014 11:13:09 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:33402 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752254AbaBNQNH (ORCPT ); Fri, 14 Feb 2014 11:13:07 -0500 Date: Fri, 14 Feb 2014 08:13:02 -0800 From: Christoph Hellwig To: Linus Torvalds Cc: Al Viro , Oleg Nesterov , Dave Jones , Eric Sandeen , Linux Kernel , xfs@oss.sgi.com Subject: Re: 3.14-rc2 XFS backtrace because irqs_disabled. Message-ID: <20140214161302.GA16416@infradead.org> References: <20140212010941.GM18016@ZenIV.linux.org.uk> <20140212040358.GA25327@redhat.com> <20140212042215.GN18016@ZenIV.linux.org.uk> <20140212054043.GB13997@dastard> <20140212113928.GO18016@ZenIV.linux.org.uk> <20140212211421.GP18016@ZenIV.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 12, 2014 at 01:32:55PM -0800, Linus Torvalds wrote: > We'd have to teach each user of "dequeue_signal()" to free the siginfo > thing. Which shouldn't be too bad - I think we've collected all of > that into generic code, and there isn't the mass or architecture code > that knows about these things any more. But there are a few odd > drivers etc and signalfd. The few odd drivers are nbd, jffs2 and the usb mass storage gadget. All of these have in common that they try to handle signals in a kernel thread (which we don't even allow by default), and that they ignore the siginfo. I think they could mostly be replaced by an addition to the kthread API to allow a kthread to be killed by signals for legacy reasons. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/