From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1FJtNd-0002Xt-9B for user-mode-linux-devel@lists.sourceforge.net; Thu, 16 Mar 2006 06:23:09 -0800 Received: from host.almesberger.net ([204.10.140.10]) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1FJtNb-0001K3-Eb for user-mode-linux-devel@lists.sourceforge.net; Thu, 16 Mar 2006 06:23:09 -0800 From: Werner Almesberger Subject: Re: [uml-devel] Occasional hang starting up. Message-ID: <20060316112251.A17140@almesberger.net> References: <200603111301.42195.rob@landley.net> <20060314202249.GB22286@ccure.user-mode-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060314202249.GB22286@ccure.user-mode-linux.org>; from jdike@addtoit.com on Tue, Mar 14, 2006 at 03:22:49PM -0500 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, 16 Mar 2006 11:22:51 -0300 To: Jeff Dike Cc: Rob Landley , user-mode-linux-devel@lists.sourceforge.net Jeff Dike wrote: > Having said that, > if you can get a stack from the hang, it might turn out to be an easily > diagnosed and fixed bug. Seems that arch/um/kernel/sigio_user.c:write_sigio_thread begins its poll before there are any fds in current_poll, so update_thread caused by a add_sigio_fd shortly thereafter hangs while waiting for a response. A sleep(1) at the beginning of write_sigio_thread "fixes" this :-) - Werner -- _________________________________________________________________________ / Werner Almesberger, Buenos Aires, Argentina wa@almesberger.net / /_http://www.almesberger.net/____________________________________________/ ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel