Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756346AbZCUWax (ORCPT ); Sat, 21 Mar 2009 18:30:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755250AbZCUWap (ORCPT ); Sat, 21 Mar 2009 18:30:45 -0400 Received: from mail-fx0-f158.google.com ([209.85.220.158]:52218 "EHLO mail-fx0-f158.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754396AbZCUWao (ORCPT ); Sat, 21 Mar 2009 18:30:44 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=gIyLb2Y2L2vOjCurX6/IF2+ANLhb/Nvf2epH8DaxEHRanDfdZdFhKxW8otE5Azh19h Cz9ilvnuHbgNYreNV84P5lAX7oWxQRkwWaGeIaVHIj/jI9e/1hc+9gw8eeYednRtis4S 7Ns26+aN00nghcqZYnysvoyrnvALGSKgveD3o= Date: Sun, 22 Mar 2009 01:37:59 +0300 From: Alexey Dobriyan To: "Frank Ch. Eigler" , Roland McGrath Cc: Linus Torvalds , Andrew Morton , Ingo Molnar , Steven Rostedt , utrace-devel@redhat.com, linux-kernel@vger.kernel.org, Peter Zijlstra , Thomas Gleixner Subject: Re: [PATCH 3/3] utrace-based ftrace "process" engine, v2 Message-ID: <20090321223759.GA22770@x200.localdomain> References: <20090321013912.ed6039c9.akpm@linux-foundation.org> <20090321091235.GA29678@elte.hu> <20090321041954.72b99e69.akpm@linux-foundation.org> <20090321115141.GA3566@redhat.com> <20090321050422.d1d99eec.akpm@linux-foundation.org> <20090321154501.GA2707@elte.hu> <20090321143413.75ead1aa.akpm@linux-foundation.org> <20090321215145.GB5262@redhat.com> <20090321222030.GA5157@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090321222030.GA5157@redhat.com> 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: 1188 Lines: 27 On Sat, Mar 21, 2009 at 06:20:30PM -0400, Frank Ch. Eigler wrote: > On Sat, Mar 21, 2009 at 03:02:59PM -0700, Linus Torvalds wrote: > > [...] > > > The thing is, utrace crashes in Fedora have dominated kerneloops.org > > > for many months [...] > > > > .. and dammit, I agree 100%. If utrace really shows up in _any_ way on > > kerneloops.org, then I think THE ENTIRE DISCUSSION in this thread is moot. > > There was a short span of time during last fall, when Roland was on > vacation. That bug (in 2.6.26.3) was fixed during the kernel summit. > So this is a six-month obsolete grievance. struct task_struct::utrace became embedded struct. This is good and should remove quite a few of utrace bugs. Better late than never. However, "rewrite-ptrace-via-utrace" patch was omitted, so almost noone can easily see by how much situation improved. I see this patch was dropped in Fedora. Will ptrace(2) will be rewritten through utrace? -- 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/