Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751402Ab3JYFvd (ORCPT ); Fri, 25 Oct 2013 01:51:33 -0400 Received: from ozlabs.org ([203.10.76.45]:50122 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751066Ab3JYFvc (ORCPT ); Fri, 25 Oct 2013 01:51:32 -0400 From: Rusty Russell To: Ming Lei Cc: Russell King - ARM Linux , Andrew Morton , Linux Kernel Mailing List , Chen Gang , linux-arm-kernel Subject: Re: [RFC PATCH] kernel/kallsyms.c: only show legal kernel symbol In-Reply-To: References: <1382498320-26594-1-git-send-email-tom.leiming@gmail.com> <87eh7bfoq9.fsf@rustcorp.com.au> <20131024084559.GD16735@n2100.arm.linux.org.uk> <87mwlyclng.fsf@rustcorp.com.au> User-Agent: Notmuch/0.15.2 (http://notmuchmail.org) Emacs/23.4.1 (i686-pc-linux-gnu) Date: Fri, 25 Oct 2013 16:20:10 +1030 Message-ID: <87y55h7vcd.fsf@rustcorp.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1072 Lines: 29 Ming Lei writes: > On Fri, Oct 25, 2013 at 7:08 AM, Rusty Russell wrote: >> >> Sorry, I was imprecise. I was referring to the kernel's kallsyms >> tables produced by scripts/kallsyms.c. This patch left them in the >> the kallsyms tables and filtered them out from /proc/kallsyms. > > Yes, but it isn't easy to do it by script/kallsyms.c , and IMO, it should > be correct to hide them for user space but keep them in kallsyms table. So they'll appear in backtraces? And turn up randomly for other symbol dereferences? I don't think you really want this! >> It's weird that cpu_v7_suspend_size appeared above, since kallsyms >> should filter out 'A' symbols already. > > Sorry, the 'A' symbol is a mistake, but the others do exist in /proc/kallsyms. Ah, OK. Cheers, Rusty. -- 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/