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 X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 28C52C6778A for ; Mon, 9 Jul 2018 08:50:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C019720882 for ; Mon, 9 Jul 2018 08:50:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="nTNZ8yK5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C019720882 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754411AbeGIIuI (ORCPT ); Mon, 9 Jul 2018 04:50:08 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:49746 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754142AbeGIIuG (ORCPT ); Mon, 9 Jul 2018 04:50:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=W5stwuU4mtY1E404aWVJRmPcl5usRhmh2n4cmpjcHag=; b=nTNZ8yK5Gl5XN5oiLqKlzJQnK n0gAxTXddM3hhdp63fGSIRmrpTZG8DvBKN5MQAVnMJpdiPTnp+jH5pDACLFjFEm9tucCHtxvzobrM 7BYBo0qzVUnx0suiUEwOoI1UxfKVps6vjFK0hYzjLOS4fUyJ6NLdlWs0wNSRcIyXisW/nYU48p/0x 5nqqb8rn6XocFqUHKM7NpbqKHjXd0kONRYxrIld8827YCM/dzVv9H2vcoh8MA3OMJkoNhy5ZITEJO vuNZ6Ay6Oep/vE9xz/TZ+/JBvYkovE0Qm3tdlgqGkQwbJOhJCMZbLkjB/JI2HM7LjdRN4aAnS1laG izDRizC1A==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fcRrn-0005oq-Kv; Mon, 09 Jul 2018 08:49:55 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id EDA6B2028932D; Mon, 9 Jul 2018 10:49:53 +0200 (CEST) Date: Mon, 9 Jul 2018 10:49:53 +0200 From: Peter Zijlstra To: Tetsuo Handa Cc: Ingo Molnar , mingo@redhat.com, linux-kernel@vger.kernel.org, Tetsuo Handa , Andy Lutomirski , Borislav Petkov , Josh Poimboeuf , Linus Torvalds , Thomas Gleixner Subject: Re: [PATCH] x86: Avoid pr_cont() in show_opcodes() Message-ID: <20180709084953.GB2476@hirez.programming.kicks-ass.net> References: <1530943625-3288-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp> <20180707111209.GA27768@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jul 07, 2018 at 10:54:28PM +0900, Tetsuo Handa wrote: > >> Since syzbot is confused by concurrent printk() messages [1], > >> this patch changes show_opcodes() to use snprintf(). But how big of a problem is that really? We can't very well remove all pr_cont stuff from the kernel.