From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752739Ab2DUNM4 (ORCPT ); Sat, 21 Apr 2012 09:12:56 -0400 Received: from mail-we0-f174.google.com ([74.125.82.174]:43481 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751842Ab2DUNMz (ORCPT ); Sat, 21 Apr 2012 09:12:55 -0400 Date: Sat, 21 Apr 2012 15:13:52 +0200 From: Daniel Vetter To: Maciej Rutecki , Linux Kernel Mailing List , dri-devel@lists.freedesktop.org Subject: Re: [Regression][3.4-rc3][intel-dri] MMIO read or write has been dropped ffffffff Message-ID: <20120421131352.GD5019@phenom.ffwll.local> Mail-Followup-To: Maciej Rutecki , Linux Kernel Mailing List , dri-devel@lists.freedesktop.org References: <201204210739.08963.maciej.rutecki@gmail.com> <20120421130307.GB5019@phenom.ffwll.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120421130307.GB5019@phenom.ffwll.local> X-Operating-System: Linux phenom 3.2.0-2-amd64 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 On Sat, Apr 21, 2012 at 03:03:07PM +0200, Daniel Vetter wrote: > On Sat, Apr 21, 2012 at 07:39:08AM +0200, Maciej Rutecki wrote: > > Bad kernel: 3.4-rc3 > > Last known good: 3.3 > > > > Subsystem: dri-intel (guess) > > > > Steps to reproduce: > > 1. Suspend to ram > > 2. Resume > > > > After resume laptop works ok, but in dmesg I found: > > [ 164.098113] ------------[ cut here ]------------ > > [ 164.098124] WARNING: at drivers/gpu/drm/i915/i915_drv.c:398 > > gen6_gt_check_fifodbg.isra.6+0x31/0x43() > > [ 164.098126] Hardware name: 1141ALG > > [ 164.098128] MMIO read or write has been dropped ffffffff > > [ 164.098129] Modules linked in: xt_tcpudp xt_limit xt_state iptable_filter > > nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ip_tables x_tables bnep rfcomm > > bluetooth uinput fuse loop sha256_generic aes_x86_64 aes_generic cbc dm_crypt > > dm_mod uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev > > usbhid hid media snd_hda_codec_hdmi snd_hda_codec_conexant arc4 iwlwifi > > mac80211 thinkpad_acpi cfg80211 coretemp nvram snd_hda_intel snd_hda_codec > > snd_hwdep snd_pcm snd_page_alloc snd_seq ehci_hcd sdhci_pci crc32c_intel > > iTCO_wdt iTCO_vendor_support ghash_clmulni_intel snd_seq_device cryptd > > snd_timer microcode snd acpi_cpufreq mperf usbcore psmouse sdhci r8169 > > mmc_core mii ac rfkill i2c_i801 soundcore mei(C) serio_raw pcspkr thermal > > battery power_supply wmi usb_common evdev processor > > [ 164.098188] Pid: 4684, comm: kworker/u:9 Tainted: G C 3.4.0-rc3 > > #1 > > [ 164.098189] Call Trace: > > [ 164.098197] [] warn_slowpath_common+0x7e/0x96 > > [ 164.098200] [] warn_slowpath_fmt+0x41/0x43 > > [ 164.098203] [] gen6_gt_check_fifodbg.isra.6+0x31/0x43 > > [ 164.098207] [] __gen6_gt_force_wake_put+0x19/0x1b > > [ 164.098210] [] i915_read32+0x66/0x9d > > [ 164.098213] [] i915_update_gfx_val+0x61/0xb9 > > [ 164.098218] [] intel_idle_update+0x47/0x18d > > [ 164.098222] [] process_one_work+0x1b5/0x340 > > [ 164.098225] [] ? process_one_work+0x118/0x340 > > [ 164.098228] [] ? intel_disable_plane+0x60/0x60 > > [ 164.098231] [] worker_thread+0xce/0x152 > > [ 164.098234] [] ? manage_workers.isra.22+0x16a/0x16a > > [ 164.098237] [] kthread+0xa1/0xa9 > > [ 164.098242] [] ? trace_hardirqs_on+0xd/0xf > > [ 164.098246] [] kernel_thread_helper+0x4/0x10 > > [ 164.098250] [] ? retint_restore_args+0x13/0x13 > > [ 164.098253] [] ? __init_kthread_worker+0x55/0x55 > > [ 164.098256] [] ? gs_change+0x13/0x13 > > [ 164.098257] ---[ end trace 97bd0b679d161c3e ]--- > > [ 164.098827] ------------[ cut here ]------------ > > [ 164.098830] WARNING: at drivers/gpu/drm/i915/i915_drv.c:398 > > gen6_gt_check_fifodbg.isra.6+0x31/0x43() > > [ 164.098832] Hardware name: 1141ALG > > [ 164.098833] MMIO read or write has been dropped ffffffff > > [ 164.098834] Modules linked in: xt_tcpudp xt_limit xt_state iptable_filter > > nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ip_tables x_tables bnep rfcomm > > bluetooth uinput fuse loop sha256_generic aes_x86_64 aes_generic cbc dm_crypt > > dm_mod uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev > > usbhid hid media snd_hda_codec_hdmi snd_hda_codec_conexant arc4 iwlwifi > > mac80211 thinkpad_acpi cfg80211 coretemp nvram snd_hda_intel snd_hda_codec > > snd_hwdep snd_pcm snd_page_alloc snd_seq ehci_hcd sdhci_pci crc32c_intel > > iTCO_wdt iTCO_vendor_support ghash_clmulni_intel snd_seq_device cryptd > > snd_timer microcode snd acpi_cpufreq mperf usbcore psmouse sdhci r8169 > > mmc_core mii ac rfkill i2c_i801 soundcore mei(C) serio_raw pcspkr thermal > > battery power_supply wmi usb_common evdev processor > > [ 164.098877] Pid: 4684, comm: kworker/u:9 Tainted: G WC 3.4.0-rc3 > > #1 > > [ 164.098878] Call Trace: > > [ 164.098881] [] warn_slowpath_common+0x7e/0x96 > > [ 164.098884] [] warn_slowpath_fmt+0x41/0x43 > > [ 164.098888] [] gen6_gt_check_fifodbg.isra.6+0x31/0x43 > > [ 164.098891] [] __gen6_gt_force_wake_put+0x19/0x1b > > [ 164.098894] [] i915_read32+0x66/0x9d > > [ 164.098896] [] intel_idle_update+0x9f/0x18d > > [ 164.098899] [] process_one_work+0x1b5/0x340 > > [ 164.098902] [] ? process_one_work+0x118/0x340 > > [ 164.098904] [] ? intel_disable_plane+0x60/0x60 > > [ 164.098907] [] worker_thread+0xce/0x152 > > [ 164.098910] [] ? manage_workers.isra.22+0x16a/0x16a > > [ 164.098913] [] kthread+0xa1/0xa9 > > [ 164.098916] [] ? trace_hardirqs_on+0xd/0xf > > [ 164.098918] [] kernel_thread_helper+0x4/0x10 > > [ 164.098921] [] ? retint_restore_args+0x13/0x13 > > [ 164.098925] [] ? __init_kthread_worker+0x55/0x55 > > [ 164.098927] [] ? gs_change+0x13/0x13 > > [ 164.098928] ---[ end trace 97bd0b679d161c3f ]--- > > > > I found similar report in: > > https://bugzilla.redhat.com/show_bug.cgi?id=809773 > > > > Dmesg, config and lspci: > > http://mrutecki.pl/download/kernel/3.4-rc3/dri_intel/ > > Can you please take these files and create a bug report at > bugs.freedesktop.org. Also, is there anything going wrong besides these > error message while you do a suspend cycle? > > I'm asking because we newly added this error message to catch potential > issues, but without anything else going wrong it's not a regression. Actually no bug report required, Ben Widawsky already stumbled over this issue: https://bugs.freedesktop.org/show_bug.cgi?id=49025 So if you don't see any other bad side-effects than the WARN backtrace, I guess we don't need another bug report. -Daniel -- Daniel Vetter Mail: daniel@ffwll.ch Mobile: +41 (0)79 365 57 48