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=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 93C84C35646 for ; Fri, 21 Feb 2020 11:44:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D6C324650 for ; Fri, 21 Feb 2020 11:44:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582285455; bh=XlkurcWvOdbAlHwepPog2OjnadfMkPfYhanEHX/B9no=; h=From:To:Cc:Subject:Date:List-ID:From; b=K81eeXYl2ZVaTQxD2mF0+Vne6ZBKYW1/FGCZsn7Pm4Xr4++u+bou4Nt/LRfkk8IBU 5I5h+WW3HstkiM68hvWK3aaP/vCDXTZdg3J3EIaYJtgqFIODeHaCW9NgmKJ8HobDpQ pKwSCyButn5LJk8k2zP/mDU3LAZHIdkFGj8i6WHw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727277AbgBULoO (ORCPT ); Fri, 21 Feb 2020 06:44:14 -0500 Received: from mail.kernel.org ([198.145.29.99]:42832 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726909AbgBULoN (ORCPT ); Fri, 21 Feb 2020 06:44:13 -0500 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 679B0222C4; Fri, 21 Feb 2020 11:44:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582285453; bh=XlkurcWvOdbAlHwepPog2OjnadfMkPfYhanEHX/B9no=; h=From:To:Cc:Subject:Date:From; b=s8C7l30ZeWRptTjjHJCZ7Dw239cSvoh2oPBVwb/hwhgaNCQ+niYrwrGNhjxZyy/Nz WmkGsiX/n7vL0d6ffxlZ9MGEkuSvSRQbQbQW3afuoXL7j3bm52zXzlbYPq3ENzw7HI XA43AYnpYLNRsysg4qCgcnX96BrCKLdz8ZHRZIrM= From: Will Deacon To: linux-kernel@vger.kernel.org Cc: kernel-team@android.com, akpm@linux-foundation.org, Will Deacon , "K . Prasad" , Thomas Gleixner , Greg Kroah-Hartman , Frederic Weisbecker , Christoph Hellwig , Quentin Perret , Alexei Starovoitov , Masami Hiramatsu Subject: [PATCH 0/3] Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol() Date: Fri, 21 Feb 2020 11:44:01 +0000 Message-Id: <20200221114404.14641-1-will@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi folks, Despite having just a single modular in-tree user that I could spot, kallsyms_lookup_name() is exported to modules and provides a mechanism for out-of-tree modules to access and invoke arbitrary, non-exported kernel symbols when kallsyms is enabled. This patch series fixes up that one user and unexports the symbol along with kallsyms_on_each_symbol(), since that could also be abused in a similar manner. Cheers, Will Cc: K.Prasad Cc: Thomas Gleixner Cc: Greg Kroah-Hartman Cc: Frederic Weisbecker Cc: Christoph Hellwig Cc: Quentin Perret Cc: Alexei Starovoitov Cc: Masami Hiramatsu --->8 Will Deacon (3): samples/hw_breakpoint: Drop HW_BREAKPOINT_R when reporting writes samples/hw_breakpoint: Drop use of kallsyms_lookup_name() kallsyms: Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol() kernel/kallsyms.c | 2 -- samples/hw_breakpoint/data_breakpoint.c | 11 ++++++++--- 2 files changed, 8 insertions(+), 5 deletions(-) -- 2.25.0.265.gbab2e86ba0-goog