From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754084AbaAWRbr (ORCPT ); Thu, 23 Jan 2014 12:31:47 -0500 Received: from smtp.outflux.net ([198.145.64.163]:33875 "EHLO smtp.outflux.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753416AbaAWRbq (ORCPT ); Thu, 23 Jan 2014 12:31:46 -0500 Date: Thu, 23 Jan 2014 09:31:20 -0800 From: Kees Cook To: crash-utility@redhat.com Cc: linux-kernel@vger.kernel.org, Dave Anderson , Andrew Honig , Eugene Surovegin , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Yinghai Lu Subject: [PATCH v2] x86, kaslr: export offset in VMCOREINFO ELF notes Message-ID: <20140123173120.GA25474@www.outflux.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-HELO: www.outflux.net Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eugene Surovegin Include kASLR offset in VMCOREINFO ELF notes to assist in debugging. Signed-off-by: Eugene Surovegin Signed-off-by: Kees Cook --- v2: - make sure "From:" got sent correctly --- arch/x86/kernel/machine_kexec_64.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 4eabc160696f..679cef0791cd 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -279,5 +279,7 @@ void arch_crash_save_vmcoreinfo(void) VMCOREINFO_SYMBOL(node_data); VMCOREINFO_LENGTH(node_data, MAX_NUMNODES); #endif + vmcoreinfo_append_str("KERNELOFFSET=%lx\n", + (unsigned long)&_text - __START_KERNEL); } -- 1.7.9.5 -- Kees Cook Chrome OS Security