Memtest & error

[rouvas at di.uoa.gr]

Harris Kosmidhs wrote:
> Τελευταία παρατήρησα διάφορα crashαρίσματα στο Ubuntu μου. Πετούσε και
> στο gnome-terminal και στο kern.log κάτι του στύλ:
>
> Oct  4 13:46:07 desktop kernel: [17574.376578] BUG: unable to handle
> kernel paging request at virtual address 00004000
> Oct  4 13:46:07 desktop kernel: [17574.376585]  printing eip:
> Oct  4 13:46:07 desktop kernel: [17574.376587] c015d2ef
> Oct  4 13:46:07 desktop kernel: [17574.376588] *pde = 00000000
> Oct  4 13:46:07 desktop kernel: [17574.376591] Oops: 0000 [#1]
> Oct  4 13:46:07 desktop kernel: [17574.376593] Modules linked in:
> binfmt_misc nfsd exportfs cpufreq_powersave cpufreq_stats
> cpufreq_userspace cpufreq_ondemand cpufreq_conservative freq_table
> tc1100_wmi pcc_acpi sony_acpi dev_acpi video battery container sbs
> button i2c_ec dock ac asus_acpi backlight af_packet ext3 jbd mbcache xfs
> fuse sbp2 lp xpad snd_intel8x0 snd_ac97_codec fglrx(P) ac97_bus
> snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi
> snd_rawmidi snd_seq_midi_event psmouse serio_raw snd_seq ipv6 parport_pc
> parport rtc pcspkr snd_timer snd_seq_device snd soundcore nfs lockd
> sunrpc shpchp pci_hotplug snd_page_alloc nvidia_agp agpgart i2c_nforce2
> i2c_core tsdev evdev joydev reiserfs sg sd_mod ide_cd cdrom generic
> usbhid hid amd74xx ata_generic floppy sata_promise ohci1394 ieee1394
> sata_nv libata scsi_mod forcedeth ehci_hcd ohci_hcd usbcore thermal
> processor fan fbcon tileblit font bitblit softcursor vesafb capability
> commoncap
> Oct  4 13:46:07 desktop kernel: [17574.376640] CPU:    0
> Oct  4 13:46:07 desktop kernel: [17574.376641] EIP:
> 0060:[shmem_getpage+63/1376]    Tainted: P      VLI
> Oct  4 13:46:07 desktop kernel: [17574.376642] EFLAGS: 00010206
> (2.6.20-16-386 #2)
> Oct  4 13:46:07 desktop kernel: [17574.376649] EIP is at
> shmem_getpage+0x3f/0x560
> Oct  4 13:46:07 desktop kernel: [17574.376652] eax: e4268464   ebx:
> 00000134   ecx: f54d3f08   edx: e4268374
> Oct  4 13:46:07 desktop kernel: [17574.376655] esi: ffffffe5   edi:
> e42683d0   ebp: 00004000   esp: f54d3ec8
> Oct  4 13:46:07 desktop kernel: [17574.376657] ds: 007b   es: 007b   ss:
> 0068
> Oct  4 13:46:07 desktop kernel: [17574.376660] Process convert (pid:
> 6366, ti=f54d2000 task=eff5fa70 task.ti=f54d2000)
> Oct  4 13:46:07 desktop kernel: [17574.376662] Stack: 00000020 0003bb82
> c0104038 f54d3f08 00000134 01000007 e4268464 e4268374
> Oct  4 13:46:07 desktop kernel: [17574.376668]        00000000 00000134
> e42683d0 f54d3f60 b3a34004 c015e787 00000002 f54d3f60
> Oct  4 13:46:07 desktop kernel: [17574.376673]        00000000 c039375c
> 00000000 00000000 c015234c 2f17c067 00421df6 00000282
> Oct  4 13:46:07 desktop kernel: [17574.376677] Call Trace:
> Oct  4 13:46:07 desktop kernel: [17574.376681]
> [apic_timer_interrupt+40/48] apic_timer_interrupt+0x28/0x30
> Oct  4 13:46:07 desktop kernel: [17574.376692]  [shmem_nopage+87/160]
> shmem_nopage+0x57/0xa0
> Oct  4 13:46:07 desktop kernel: [17574.376699]
> [__handle_mm_fault+300/2448] __handle_mm_fault+0x12c/0x990
> Oct  4 13:46:07 desktop kernel: [17574.376714]
> [run_timer_softirq+277/384] run_timer_softirq+0x115/0x180
> Oct  4 13:46:07 desktop kernel: [17574.376723]  [do_page_fault+296/1536]
> do_page_fault+0x128/0x600
> Oct  4 13:46:07 desktop kernel: [17574.376736]  [do_page_fault+0/1536]
> do_page_fault+0x0/0x600
> Oct  4 13:46:07 desktop kernel: [17574.376740]  [error_code+116/128]
> error_code+0x74/0x80
> Oct  4 13:46:07 desktop kernel: [17574.376754]  =======================
> Oct  4 13:46:07 desktop kernel: [17574.376756] Code: a4 89 4c 24 0c 8b
> 80 90 00 00 00 81 7c 24 10 0f 00 08 20 89 54 24 1c 89 44 24 18 8b 29 0f
> 87 8c 02 00 00 85 ed 0f 84 42 01 00 00 <8b> 45 00 a8 08 0f 85 15 03 00
> 00 8b 44 24 38 85 c0 0f 84 f1 03
> Oct  4 13:46:07 desktop kernel: [17574.376774] EIP:
> [shmem_getpage+63/1376] shmem_getpage+0x3f/0x560 SS:ESP 0068:f54d3ec8
> Oct  4 13:46:08 desktop kernel: [17574.376779]  <1>BUG: unable to handle
> kernel paging request at virtual address 00004000
> Oct  4 13:46:08 desktop kernel: [17575.632198]  printing eip:
> Oct  4 13:46:08 desktop kernel: [17575.632200] c015d2ef
> Oct  4 13:46:08 desktop kernel: [17575.632202] *pde = 00000000
> Oct  4 13:46:08 desktop kernel: [17575.632205] Oops: 0000 [#2]
> Oct  4 13:46:08 desktop kernel: [17575.632207] Modules linked in:
> binfmt_misc nfsd exportfs cpufreq_powersave cpufreq_stats
> cpufreq_userspace cpufreq_ondemand cpufreq_conservative freq_table
> tc1100_wmi pcc_acpi sony_acpi dev_acpi video battery container sbs
> button i2c_ec dock ac asus_acpi backlight af_packet ext3 jbd mbcache xfs
> fuse sbp2 lp xpad snd_intel8x0 snd_ac97_codec fglrx(P) ac97_bus
> snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi
> snd_rawmidi snd_seq_midi_event psmouse serio_raw snd_seq ipv6 parport_pc
> parport rtc pcspkr snd_timer snd_seq_device snd soundcore nfs lockd
> sunrpc shpchp pci_hotplug snd_page_alloc nvidia_agp agpgart i2c_nforce2
> i2c_core tsdev evdev joydev reiserfs sg sd_mod ide_cd cdrom generic
> usbhid hid amd74xx ata_generic floppy sata_promise ohci1394 ieee1394
> sata_nv libata scsi_mod forcedeth ehci_hcd ohci_hcd usbcore thermal
> processor fan fbcon tileblit font bitblit softcursor vesafb capability
> commoncap
>
> Με τα πολλά έτρεξα ένα memtest. (v.1.68)
>
> Το αποτέλεσμα μετά απο 7 ώρες ήταν το παρακάτω:
>
> WallTime	Cached	RsvdMem	MemMap		Cache
> --------------------------------------------------
> 7:06:36		1024M	88K	e820_std	on
>
> στην ίδια γραμμή
> Ecc	Test	Pass	Error	ECC error
> ---------------------------------------------------
> off	std	13	5	0
>
>
> απο κάτω:
>
> Test	Pass	Failing Address		Good
> ----------------------------------------------------
> 3	4	000008c1c8-0.7MB	0808808
>
> Bad		Err_bits	Count
> ----------------------------------------------------
> 08084808	00004000	5
>
>
> μπορεί κάποιος να μου αποκρυπτογραφήσει το μύνημα;; :-)
>
> Ευχαριστώ
> Χάρης

Όταν το σταμάτησες, ήταν στο 4ο "πέρασμα" της 3ης Ομάδας Ελέγχων και είχε
βρει 5 λάθη.

Με άλλα λόγια, RAM πάπαλα! Καιρός να αλλάξεις τσιπάκια... δυστυχώς.
Εκτός και αν μπορείς με άλλο τρόπο να ορίσεις να μην χρησιμοποιείται η
διεύθυνση μνήμης "000008c1c8", αλλά και πάλι δεν εξασφαλίζεσαι ότι δεν θα
χτυπήσει σε άλλο μέρος. Οπότε καταλήγουμε στο προηγούμενο συμπέρασμα.

-Στάθης

>
>
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