From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:49154 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755772AbcBXDds (ORCPT ); Tue, 23 Feb 2016 22:33:48 -0500 Subject: Patch "dma-debug: switch check from _text to _stext" has been added to the 3.14-stable tree To: labbott@fedoraproject.org, 567B1176.4000106@redhat.com, akpm@linux-foundation.org, arnd@arndb.de, gregkh@linuxfoundation.org, keescook@chromium.org, linux@arm.linux.org.uk, torvalds@linux-foundation.org Cc: , From: Date: Tue, 23 Feb 2016 19:23:33 -0800 Message-ID: <1456284213172232@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled dma-debug: switch check from _text to _stext to the 3.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: dma-debug-switch-check-from-_text-to-_stext.patch and it can be found in the queue-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From ea535e418c01837d07b6c94e817540f50bfdadb0 Mon Sep 17 00:00:00 2001 From: Laura Abbott Date: Thu, 14 Jan 2016 15:16:50 -0800 Subject: dma-debug: switch check from _text to _stext From: Laura Abbott commit ea535e418c01837d07b6c94e817540f50bfdadb0 upstream. In include/asm-generic/sections.h: /* * Usage guidelines: * _text, _data: architecture specific, don't use them in * arch-independent code * [_stext, _etext]: contains .text.* sections, may also contain * .rodata.* * and/or .init.* sections _text is not guaranteed across architectures. Architectures such as ARM may reuse parts which are not actually text and erroneously trigger a bug. Switch to using _stext which is guaranteed to contain text sections. Came out of https://lkml.kernel.org/g/<567B1176.4000106@redhat.com> Signed-off-by: Laura Abbott Reviewed-by: Kees Cook Cc: Russell King Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- lib/dma-debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -1165,7 +1165,7 @@ static inline bool overlap(void *addr, u static void check_for_illegal_area(struct device *dev, void *addr, unsigned long len) { - if (overlap(addr, len, _text, _etext) || + if (overlap(addr, len, _stext, _etext) || overlap(addr, len, __start_rodata, __end_rodata)) err_printk(dev, NULL, "DMA-API: device driver maps memory from kernel text or rodata [addr=%p] [len=%lu]\n", addr, len); } Patches currently in stable-queue which might be from labbott@fedoraproject.org are queue-3.14/dma-debug-switch-check-from-_text-to-_stext.patch