From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932265AbaIEMJJ (ORCPT ); Fri, 5 Sep 2014 08:09:09 -0400 Received: from mail-we0-f179.google.com ([74.125.82.179]:46732 "EHLO mail-we0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932098AbaIEMJH (ORCPT ); Fri, 5 Sep 2014 08:09:07 -0400 Date: Fri, 5 Sep 2014 13:09:04 +0100 From: Matt Fleming To: Francis Moreau Cc: LKML , Borislav Petkov , linux-efi@vger.kernel.org Subject: Re: oops on kernel 3.14.17 seems related to EFI Message-ID: <20140905120904.GN3001@console-pimps.org> References: <54095D73.7010907@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <54095D73.7010907@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (Adding linux-efi) On Fri, 05 Sep, at 08:51:31AM, Francis Moreau wrote: > [ +0.000045] RIP: 0010:[<0000000000000000>] [< (null)>] (null) > [ +0.000046] RSP: 0018:ffff8800b4001da8 EFLAGS: 00010002 > [ +0.000032] RAX: 0000000080050033 RBX: ffff880406288000 RCX: ffff880406288000 > [ +0.000041] RDX: ffff880406288400 RSI: ffff880406288000 RDI: 0000000000000000 > [ +0.000042] RBP: ffff8800b4001e80 R08: 0000000000000000 R09: ffff8800b4001ec0 > [ +0.000042] R10: 0000000000000000 R11: 0000000000000246 R12: ffff880406288400 > [ +0.000042] R13: 0000000000000000 R14: ffff8800b4001ec0 R15: 000000000009b000 > [ +0.000042] FS: 00007f7720a567c0(0000) GS:ffff88041e2c0000(0000) knlGS:0000000000000000 > [ +0.000048] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ +0.000034] CR2: 0000000000000000 CR3: 000000000009b000 CR4: 00000000001427e0 > [ +0.000042] Stack: > [ +0.000014] ffffffff81063281 ffffffff811bd95c 0000000000000246 ffff8800da9e6628 > [ +0.000052] 8000000300000000 0000000000000000 0000000000000000 ffff8800b4001e50 > [ +0.000051] 0000000080050033 00007f7722abbc50 00007f7722abbb50 00ffffffffffffff > [ +0.000052] Call Trace: > [ +0.000022] [] ? efi_call5+0x71/0xf0 > [ +0.000035] [] ? getname_flags+0x2c/0x130 > [ +0.000037] [] ? virt_efi_get_variable+0x49/0x60 > [ +0.000051] [] efivar_entry_size+0x41/0x80 > [ +0.000030] [] efivarfs_file_read+0x49/0x100 > [ +0.000046] [] vfs_read+0x97/0x160 > [ +0.000041] [] SyS_read+0x59/0xd0 > [ +0.000041] [] system_call_fastpath+0x16/0x1b This looks like efi.systab->runtime->get_variable is NULL. Could you send a copy of the dmesg buffer? It might contain some info to explain this issue. Also, is this a regression? If so it would be excellent if you could pinpoint the commit that causes the problem, using git bisect. -- Matt Fleming, Intel Open Source Technology Center