Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757567AbaFSHn3 (ORCPT ); Thu, 19 Jun 2014 03:43:29 -0400 Received: from mail-lb0-f173.google.com ([209.85.217.173]:39109 "EHLO mail-lb0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755868AbaFSHn0 (ORCPT ); Thu, 19 Jun 2014 03:43:26 -0400 MIME-Version: 1.0 In-Reply-To: References: <1403154257-14591-1-git-send-email-lauraa@codeaurora.org> Date: Thu, 19 Jun 2014 09:43:24 +0200 X-Google-Sender-Auth: 8ocKfBkimk9MEBe3bWjn7J_UzsM Message-ID: Subject: Re: [PATCH] of: Check for phys_addr_t overflows in early_init_dt_add_memory_arch From: Geert Uytterhoeven To: Laura Abbott Cc: Grant Likely , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Simon Horman , "devicetree@vger.kernel.org" , Rob Herring Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fixed Rob's and devicetree's addresses On Thu, Jun 19, 2014 at 9:31 AM, Geert Uytterhoeven wrote: > Hi Laura, > > On Thu, Jun 19, 2014 at 7:04 AM, Laura Abbott wrote: >> The common early_init_dt_add_memory_arch takes the base and size >> of a memory region as u64 types. The function never checks if >> the base and size can actually fit in a phys_addr_t which may >> be smaller than 64-bits. This may result in incorrect memory >> being passed to memblock_add if the memory falls outside the >> range of phys_addr_t. Add range checks for the base and size if >> phys_addr_t is smaller than u64. >> >> Reported-by: Geert Uytterhoeven >> Signed-off-by: Laura Abbott > > Tested-by: Geert Uytterhoeven > >> --- >> Geert, can you drop my other patch and give this a test to see if it fixes >> your bootup problem? > > Thanks, works fine! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- 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/