From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756037Ab1AaQCD (ORCPT ); Mon, 31 Jan 2011 11:02:03 -0500 Received: from mx1.redhat.com ([209.132.183.28]:23447 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751020Ab1AaQCC (ORCPT ); Mon, 31 Jan 2011 11:02:02 -0500 Date: Mon, 31 Jan 2011 16:54:11 +0100 From: Oleg Nesterov To: Tejun Heo Cc: Roland McGrath , jan.kratochvil@redhat.com, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org Subject: Re: [PATCHSET RFC] ptrace,signal: clean transition between STOPPED and TRACED Message-ID: <20110131155411.GA1613@redhat.com> References: <1293199257-11255-1-git-send-email-tj@kernel.org> <20110118021417.D347A1807B7@magilla.sf.frob.com> <20110127154600.GE24925@htj.dyndns.org> <20110127174857.GG24925@htj.dyndns.org> <20110128204030.52D31183C1E@magilla.sf.frob.com> <20110131154117.GK7459@htj.dyndns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110131154117.GK7459@htj.dyndns.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/31, Tejun Heo wrote: > > Hello, > > On Fri, Jan 28, 2011 at 12:40:30PM -0800, Roland McGrath wrote: > > > Okay, just finished ran make check with and without the patchset. > > > Without the patchset, 2.6.38-rc2 failed five tests. > > > > Hmm. I didn't think we were in that poor a state, but it has been quite a > > while since I looked. I wonder if that's a regression from a few releases > > back, or what. Oleg and Jan should know better than I do about the state > > of these tests. > > Also, the first test of xcheck seems to enter infinite loop. Are you sure late-ptrace-may-attach-check hangs? Perhaps it is the next one, tracer-lockup-on-sighandler-kill, it needs a lot of time to finish. IIRC, some time ago I did the testing with your patches applied (under kvm), I didn't notice anything unexpected. Unfortunately, these tests are more or less "random", usually a new test-case appears when we find a bug. Oleg.