From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5EA8FC6FD1C for ; Sun, 26 Mar 2023 16:56:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232318AbjCZQ4O (ORCPT ); Sun, 26 Mar 2023 12:56:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229601AbjCZQ4M (ORCPT ); Sun, 26 Mar 2023 12:56:12 -0400 Received: from 1wt.eu (wtarreau.pck.nerim.net [62.212.114.60]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 675794C1F for ; Sun, 26 Mar 2023 09:56:07 -0700 (PDT) Received: (from willy@localhost) by mail.home.local (8.17.1/8.17.1/Submit) id 32QGtv5B011131; Sun, 26 Mar 2023 18:55:57 +0200 Date: Sun, 26 Mar 2023 18:55:57 +0200 From: Willy Tarreau To: "Paul E. McKenney" Cc: linux@weissschuh.net, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/8] tools/nolibc: add support for stack protector Message-ID: References: <20230325154516.7995-1-w@1wt.eu> <0d9bbc94-7ea2-4bc5-8523-29b100c0f1a1@paulmck-laptop> <35a26245-0171-44b0-8072-325576768f91@paulmck-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Mar 26, 2023 at 06:05:15PM +0200, Willy Tarreau wrote: > On Sun, Mar 26, 2023 at 06:00:45PM +0200, Willy Tarreau wrote: > > On Sun, Mar 26, 2023 at 08:45:55AM -0700, Paul E. McKenney wrote: > > > Glad I could "help"! Timers. Huh. ;-) > > > > > > Checking v6.2, though the rebase is a bit messy, so I won't be all > > > that confident in the results. > > > > I got the same as you now. I don't know what I missed before not to > > face it, maybe it's the consequence of the rebase. I've re-applied > > the patches on top of 6.2.8 and am retesting now. > > > > I think you don't need to waste more of your time on this for now > > since we have a reproducer. Thomas and I should take over. > > And it's a 6.3 regression, as 6.2.8 works fine: > > $ make run > (...) > Kernel: arch/x86/boot/bzImage is ready (#2) > make[1]: Leaving directory '/g/public/linux/master' > 126 test(s) passed. > $ tail run.out > Errors during this test: 0 > > Running test 'protection' > 0 -fstackprotector [OK] > Errors during this test: 0 > > Total number of errors: 0 > Leaving init with final status: 0 > [ 3.388706] ACPI: PM: Preparing to enter system sleep state S5 > [ 3.389424] reboot: Power down > > Now let's have fun bisecting it! So I have a good news, 6.3-rc1 which dev.2023.03.20a is based on, fails, while 6.3-rc3 works. I haven't got further yet and am not sure it's useful to dig further given that it's an already fixed problem that is not related to the patches in your branch. I don't know if you usually rebase on more recent tags though. Willy