From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sukadev Bhattiprolu Subject: Re: [PATCH] cr_tests: Fix hang when robust futex lists are not restored during restart Date: Sat, 11 Jul 2009 13:56:32 -0700 Message-ID: <20090711205632.GA13003@us.ibm.com> References: <20090709192207.GJ32310@count0.beaverton.ibm.com> <20090709205853.GA23637@us.ibm.com> <20090710002144.GA13085@us.ibm.com> <20090710233457.GA5213@count0.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20090710233457.GA5213-52DBMbEzqgQ/wnmkkaCWp/UQ3DHhIser@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Matt Helsley Cc: Containers List-Id: containers.vger.kernel.org Matt Helsley [matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org] wrote: | On Thu, Jul 09, 2009 at 05:21:44PM -0700, Sukadev Bhattiprolu wrote: | > Serge E. Hallyn [serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org] wrote: | > | Quoting Matt Helsley (matthltc-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org): | > | > The robust futex test can hang if the kernel fails to properly set the robust | > | > list pointer. This currently happens during restart. The test should not | > | > hang and instead should report failure. | > | > | > | > Use a timeout to ensure that hangs are caught and reported as failure. | > | | > | Doesn't seem to work though :) The test still hangs on restart. | > | > I got a hang on restart, with following backtrace (ckpt-v17-rc1 plus couple | > of bug fixes) | | Sorry, which fixes? I was referring to informal versions of these two commits linux-cr: 3c60cd06509ae7b12db3176dabc5a8baff45341a user-cr: 768ee7c3a407b31f8b7202ce5395163dfe79893e that I added on top of ckpt-v17-rc1. | | Perhaps this is the same problem that Serge was seeing.. Ok.