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Date: Mon, 8 Dec 2008 00:21:02 +0100 From: "Giangiacomo Mariotti" <gg.mariotti@...il.com> To: "Arjan van de Ven" <arjan@...radead.org> Cc: "Robert Hancock" <hancockr@...w.ca>, linux-kernel@...r.kernel.org Subject: Re: [HW PROBLEM] Intel I7 MCE. Erratum or not? On Sun, Dec 7, 2008 at 11:13 PM, Arjan van de Ven <arjan@...radead.org> wrote: > On Sun, 7 Dec 2008 22:55:10 +0100 > "Giangiacomo Mariotti" <gg.mariotti@...il.com> wrote: > >> On Sun, Dec 7, 2008 at 4:25 AM, Robert Hancock <hancockr@...w.ca> >> wrote: >> > >> > If it only happened once then who knows, could be a cosmic ray or >> > something.. but if it happens again it sounds like you likely have >> > a bad CPU. >> > >> This same MCE happens every time I boot the 2.6.27.8 kernel, but it >> never happens with kernel 2.6.26.8. It appears every time at log time >> [ 301.7320xx](where the x represent the scale of the approximation). >> In the previous log it appeared at [ 301.732037], now it appeared at >> [ 301.732042]. It happens just once at that moment and then never >> more until I reboot. No MCE gets logged with kernel 2.6.26.8 nor with >> Windows Vista 32bit, not even under very heavy load on memory and >> cpu(like 3d games or 3d mark vintage). Is this really an hardware >> problem? Why does it get logged only on kernel 2.6.27.8 at that exact >> moment? Now I'm gonna compile kernel 2.6.28-rc7 and see if there it >> happens too. Any suggestion? It would be appreciated, because, >> depending on the final result, I may be forced to change the >> hardware(It's still guaranteed, but it'd mean some months without a >> pc). > > which video driver are you using? > While your HW might be defective (MCE's tend to indicate that), if it's > software dependent it might also indicate that something, usually a > video driver, gets the system in a really bad state. > Also, make sure that you have MCE enabled in both kernels (I'm sure you > do, but it's one of those things worth double checking) > > Arjan van de Ven Intel Open Source Technology Centre > For development, discussion and tips for power savings, > visit http://www.lesswatts.org > About the .config file : cat config-2.6.26-1-amd64(unaffected/silent debian unstable based on 2.6.26.8) | grep MCE CONFIG_X86_MCE=y CONFIG_X86_MCE_INTEL=y CONFIG_X86_MCE_AMD=y cat config-2.6.27.8-nodbg001(affected, built by me) | grep MCE CONFIG_X86_MCE=y CONFIG_X86_MCE_INTEL=y CONFIG_X86_MCE_AMD=y I have an ati hd4850 1GB. It's not supported by the current x.org server on my distro(7.3(I tried 7.4 in experimental, but hard lock up)), so x uses the vesa driver. On 2.6.27.8(affected) I get this : cat config-2.6.27.8-nodbg001 | grep RADEON CONFIG_DRM_RADEON=m CONFIG_FB_RADEON=m CONFIG_FB_RADEON_I2C=y CONFIG_FB_RADEON_BACKLIGHT=y # CONFIG_FB_RADEON_DEBUG is not set But lsmod gives this : Module Size Used by binfmt_misc 13836 1 kvm_intel 51136 0 kvm 149272 1 kvm_intel acpi_cpufreq 12176 0 cpufreq_userspace 8324 0 cpufreq_stats 9160 0 fuse 57552 3 loop 20124 0 snd_pcm_oss 41648 0 snd_mixer_oss 18952 1 snd_pcm_oss snd_seq_dummy 7300 0 snd_seq_oss 34640 0 snd_seq_midi_event 12168 1 snd_seq_oss snd_hda_intel 447988 1 snd_seq 57400 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event i2c_i801 14492 0 i2c_core 29592 1 i2c_i801 snd_seq_device 12188 3 snd_seq_dummy,snd_seq_oss,snd_seq pcspkr 7040 0 evdev 15520 3 snd_pcm 84016 2 snd_pcm_oss,snd_hda_intel snd_timer 26784 2 snd_seq,snd_pcm snd 67240 10 snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_hda_intel,snd_seq,snd_seq_device,snd_pcm,snd_timer wmi 11712 0 button 11680 0 soundcore 12176 1 snd snd_page_alloc 13328 2 snd_hda_intel,snd_pcm firewire_sbp2 20144 7 sg 37304 0 sr_mod 20004 0 cdrom 37928 1 sr_mod jmicron 7040 0 ide_pci_generic 8708 0 ide_core 101336 2 jmicron,ide_pci_generic pata_acpi 9344 0 pata_jmicron 8192 0 sd_mod 31368 14 usbhid 47488 0 hid 44320 1 usbhid ff_memless 9488 1 usbhid usb_storage 100000 0 ata_generic 10116 0 firewire_ohci 25996 0 ahci 36620 5 firewire_core 44976 2 firewire_sbp2,firewire_ohci crc_itu_t 6400 1 firewire_core libata 176352 4 pata_acpi,pata_jmicron,ata_generic,ahci r8169 33436 0 mii 9984 1 r8169 scsi_mod 166184 6 firewire_sbp2,sg,sr_mod,sd_mod,usb_storage,libata dock 14576 1 libata ehci_hcd 38552 0 uhci_hcd 26408 0 thermal 23208 0 processor 44468 2 acpi_cpufreq,thermal fan 8192 0 thermal_sys 18064 3 thermal,processor,fan I can't find anything related to radeon or ati in here, so I guess that the kernel too has loaded a vesa driver? Giangiacomo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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