Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754322AbbLOVMg (ORCPT ); Tue, 15 Dec 2015 16:12:36 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:58532 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753585AbbLOVMf (ORCPT ); Tue, 15 Dec 2015 16:12:35 -0500 Date: Tue, 15 Dec 2015 22:12:31 +0100 From: Pavel Machek To: Linus Torvalds , rusty@rustcorp.com.au Cc: Andy Lutomirski , Arjan van de Ven , Borislav Petkov , kernel list , Stephen Smalley , Brian Gerst , Denys Vlasenko , Peter Anvin , Mike Galbraith , Peter Zijlstra , Thomas Gleixner Subject: 4.4.-rc5: lguest causes ugly warn on: 5 W+X pages found Message-ID: <20151215211231.GA6752@amd> References: <20151214085803.GA10520@pd.tnic> <20151214090726.GA6472@amd> <20151214202627.GA15104@amd> <566F3378.8070009@linux.intel.com> <20151215094015.GA3677@amd> <20151215205835.GA3522@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151215205835.GA3522@amd> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3099 Lines: 77 Hi! > > or similar? > > > > The above is entirely untested. Maybe it doesn't compile. Or > > boot. Or work. > > Well, with two extra spaces at each line, it does not apply :-). > > I applied it by hand, and the output is: > > [ 0.000000] MTRR variable ranges enabled: ...> [ 0.000000] BRK [0x0566c000, 0x0566cfff] PGTABLE > > I'll take a look if I can figure out what it means... Wait, there's more in the log. [ 1.952146] Bluetooth: HCI UART protocol H4 registered [ 1.954335] Bluetooth: HCI UART protocol BCSP registered [ 1.956750] usbcore: registered new interface driver btusb [ 1.958953] ------------[ cut here ]------------ [ 1.961149] WARNING: CPU: 1 PID: 1 at ./arch/x86/include/asm/pgtable.h:357 vmap_page_range_noflush+0x1f0/0x280() [ 1.963511] Modules linked in: [ 1.965849] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 4.4.0-rc5+ #137 [ 1.968230] Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW (2.19 ) 03/31/2011 [ 1.970593] 00000001 00000000 f5cffe64 c42baaf8 00000000 f5cffe80 c404066b 00000165 [ 1.973103] c40fbe70 00000163 00000000 00000000 f5cffe90 c404070f 00000009 00000000 [ 1.975670] f5cffee0 c40fbe70 c4f88348 00000000 ffe6dfff ffe6e000 c4f8a018 ffe6dfff [ 1.978304] Call Trace: [ 1.980882] [] dump_stack+0x41/0x59 [ 1.983464] [] warn_slowpath_common+0x6b/0xa0 [ 1.986053] [] ? vmap_page_range_noflush+0x1f0/0x280 [ 1.988625] [] warn_slowpath_null+0xf/0x20 [ 1.991154] [] vmap_page_range_noflush+0x1f0/0x280 [ 1.993676] [] map_vm_area+0x2b/0x40 [ 1.996153] [] init+0xf8/0x1a4 [ 1.998591] [] ? edac_init+0x67/0x67 [ 2.001014] [] do_one_initcall+0xc2/0x1c0 [ 2.003391] [] ? initcall_blacklist+0x97/0x97 [ 2.005815] [] ? initcall_blacklist+0x97/0x97 [ 2.008161] [] ? __usermodehelper_set_disable_depth+0x36/0x40 [ 2.010518] [] ? up_write+0x16/0x40 [ 2.012817] [] kernel_init_freeable+0xf0/0x16d [ 2.015078] [] ? kernel_init_freeable+0xf0/0x16d [ 2.017386] [] kernel_init+0x8/0xc0 [ 2.019661] [] ret_from_kernel_thread+0x21/0x38 [ 2.021932] [] ? rest_init+0xa0/0xa0 [ 2.024168] ---[ end trace e117245cd61feaf2 ]--- [ 2.026383] lguest: mapped switcher at ffe69000 [ 2.028958] sdhci: Secure Digital Host Controller Interface driver ...which I don't understand; did not we say warn on _once_? ... Um. But I think we have a winner: "lguest: mapped switcher at ffe69000". Rusty, does the switcher need to be W+X? And yes, I have lguest enabled, not sure why. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/