Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753964Ab3HERRI (ORCPT ); Mon, 5 Aug 2013 13:17:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:29249 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752127Ab3HERRG (ORCPT ); Mon, 5 Aug 2013 13:17:06 -0400 Date: Mon, 5 Aug 2013 19:11:42 +0200 From: Oleg Nesterov To: Felipe Contreras Cc: Linus Torvalds , Linux Kernel Mailing List Subject: Re: Linux 3.11-rc4 Message-ID: <20130805171142.GA6978@redhat.com> References: <20130805132948.GA14942@redhat.com> <20130805143935.GA18100@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Content-Length: 1256 Lines: 38 On 08/05, Felipe Contreras wrote: > > On Mon, Aug 5, 2013 at 9:39 AM, Oleg Nesterov wrote: > > > > Hmm. It should not crash under strace... please see below. > > > >> 953 ptrace(PTRACE_ATTACH, 1035, 0, 0) = -1 EPERM (Operation not permitted) > > > > OK, so it actually uses ptrace ;) > > > > PTRACE_ATTACH fails because this child is already traced by strace, I guess. > > > > So does Starcraft crash this way? Or does it fail in some other way? > > It's crashing just the same. But then it is not clear how fab840f can make any difference. wine can not use ptrace when it runs after "strace -f". But, to remind, I know nothing about wine. Perhaps wine uses some daemons which actually run/ptrace the workload? > > And just in case... perhaps wine does some logging too? > > Yeah, but there doesn't seem to be anything interesting: > > http://bugs.winehq.org/attachment.cgi?id=45489 at least there is certainly nothing interesting for me since I don't understand this ;) Thanks. Oleg. -- 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/