From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1AjjQw-00077P-58 for user-mode-linux-devel@lists.sourceforge.net; Thu, 22 Jan 2004 10:20:02 -0800 Received: from [12.177.129.25] (helo=ccure.user-mode-linux.org) by sc8-sf-mx2.sourceforge.net with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.30) id 1AjjQv-0003bP-If for user-mode-linux-devel@lists.sourceforge.net; Thu, 22 Jan 2004 10:20:01 -0800 From: Jeff Dike Subject: Re: [uml-devel] [patch] uml fixes, 2.6.1-mm5-A2 Message-ID: <20040122184236.GB3317@ccure.user-mode-linux.org> References: <20040120191706.GA32711@elte.hu> <20040120194328.GA1518@elte.hu> <20040120200105.GA2289@elte.hu> <20040122162139.GA28167@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040122162139.GA28167@elte.hu> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Thu, 22 Jan 2004 13:42:36 -0500 To: Ingo Molnar Cc: user-mode-linux-devel@lists.sourceforge.net On Thu, Jan 22, 2004 at 05:21:39PM +0100, Ingo Molnar wrote: > the patch below fixes a bug in UML that i've reproduced under 2.6.1-mm5. > > The bug hits in the following race scenario: if userspace() is just > about to handle a SIGTRAP signal that it wants to relay_signal(), and > SIGVTALRM hits the context before this happens but after is_user is set > to 1 in userspace(), then we get a kernelspace-signal panic. Ought to be > rare but definitely triggerable. Applied, nice catch. Jeff ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel