From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933295AbeCEKFX (ORCPT ); Mon, 5 Mar 2018 05:05:23 -0500 Received: from mondschein.lichtvoll.de ([194.150.191.11]:43279 "EHLO mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933072AbeCEKFS (ORCPT ); Mon, 5 Mar 2018 05:05:18 -0500 From: Martin Steigerwald To: Sven Joachim Cc: Linus Torvalds , Linux Kernel Mailing List , Peter Zijlstra , Thomas Gleixner Subject: Re: Linux 4.16-rc4 Date: Mon, 05 Mar 2018 11:05:16 +0100 Message-ID: <5552043.iprGPZeTD1@merkaba> In-Reply-To: <878tb7eyf8.fsf@turtle.gmx.de> References: <878tb7eyf8.fsf@turtle.gmx.de> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sven. Sven Joachim - 05.03.18, 09:09: > On 2018-03-04 15:15 -0800, Linus Torvalds wrote: > > Hmm. A reasonably calm week - the biggest change is to the 'kvm-stat' > > tool, not any actual kernel files. > > > > But there's small changes all over, with architecture updates (x86, > > s390, arm, parisc) and drivers (media, md, gpu, sound) being the bulk > > of it. But there's some filesystem fixes (mostly btrfs), > > documentation updates etc too. > > > > Go test, > > Huh, this version does not build for me: > > ,---- > > | CALL scripts/checksyscalls.sh > | DESCEND objtool > | CC /usr/local/src/linux/tools/objtool/check.o > | > | In file included from check.c:26:0: > | check.c: In function 'read_retpoline_hints': > | warn.h:57:3: error: format '%ld' expects argument of type 'long int', but > | argument 5 has type 'unsigned int' [-Werror=format=]| > | "%s: warning: objtool: " format "\n", \ > | ^ > | > | check.c:1135:3: note: in expansion of macro 'WARN' > | > | WARN("retpoline_safe size mismatch: %d %ld", sec->len, sizeof(unsigned > | long)); ^~~~ > | > | check.c:1135:44: note: format string is defined here > | > | WARN("retpoline_safe size mismatch: %d %ld", sec->len, sizeof(unsigned > | long));| > | ~~^ > | %d > | > | cc1: all warnings being treated as errors > | mv: cannot stat '/usr/local/src/linux/tools/objtool/.check.o.tmp': No such > | file or directory /usr/local/src/linux/tools/build/Makefile.build:96: > | recipe for target '/usr/local/src/linux/tools/objtool/check.o' failed > | make[3]: *** [/usr/local/src/linux/tools/objtool/check.o] Error 1 > > `---- > > This might be because I still use a 32-bit userland with a 64-bit > kernel. Building just fine here with a 64-bit userland on Debian Sid and also working just fine, so far: % cat /proc/version Linux version 4.16.0-rc4-tp520-btrfstrim+ (martin@merkaba) (gcc version 7.3.0 (Debian 7.3.0-5)) #42 SMP PREEMPT Mon Mar 5 10:22:42 CET 2018 Of course a build failure may be triggered by different configuration or any number of other reasons than using 32-bit userland. Retpoline protection is active here: % grep . /sys/devices/system/cpu/vulnerabilities/* /sys/devices/system/cpu/vulnerabilities/meltdown:Mitigation: PTI /sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: __user pointer sanitization /sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Full generic retpoline Thanks, -- Martin