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https://bugzilla.novell.com/show_bug.cgi?id=336277

User danielstefanmader@xxxxxx added comment
https://bugzilla.novell.com/show_bug.cgi?id=336277#c27





--- Comment #27 from Daniel Mader <danielstefanmader@xxxxxx>  2008-01-07 
04:22:59 MST ---
OK, I did as you told me.

Turns out that Debian 4.0 has pretty much the same problems once microcode and
microcode_ctl is active:

* Loading the microcode module:

eth2: no IPv6 routers present
IA-32 Microcode Update Driver: v1.14a <tigran@xxxxxxxxxxx>
microcode: CPU0 updated from revision 0x21 to 0x2e, date = 08112004 
microcode: CPU1 updated from revision 0x21 to 0x2e, date = 08112004 
IA-32 Microcode Update Driver: v1.14a <tigran@xxxxxxxxxxx>

* the shell suddently gets flooded with a trace, which appears in the last 33
lines of dmesg as follows:

eth2: no IPv6 routers present
IA-32 Microcode Update Driver: v1.14a <tigran@xxxxxxxxxxx>
microcode: CPU0 updated from revision 0x21 to 0x2e, date = 08112004 
microcode: CPU1 updated from revision 0x21 to 0x2e, date = 08112004 
IA-32 Microcode Update Driver: v1.14a <tigran@xxxxxxxxxxx>
BUG: unable to handle kernel NULL pointer dereference at virtual address
00000000
 printing eip:
f8994b12
*pde = 00000000
Oops: 0002 [#1]
SMP 
Modules linked in: microcode ppdev lp button ac battery ipv6 dm_snapshot
dm_mirror dm_mod sd_mod sbp2 loop snd_intel8x0 snd_ac97_codec snd_ac97_bus
snd_pcm_oss snd_mixer_oss snd_pcm snd_timer tsdev snd serio_raw analog psmouse
parport_pc parport usbhid rtc soundcore shpchp gameport floppy i2c_i801
snd_page_alloc pci_hotplug pcspkr intel_agp agpgart i2c_core evdev eth1394 ext3
jbd mbcache usb_storage scsi_mod ide_cd cdrom ide_disk uhci_hcd e100 mii
ehci_hcd ohci1394 ieee1394 piix generic ide_core usbcore thermal processor fan
CPU:    1
EIP:    0060:[<f8994b12>]    Not tainted VLI
EFLAGS: 00010246   (2.6.18-5-686 #1) 
EIP is at 0xf8994b12
eax: 00000000   ebx: c19d8000   ecx: dfc86ac0   edx: c180e6c0
esi: 00001000   edi: c1a13f74   ebp: b7fad000   esp: c1a13f60
ds: 007b   es: 007b   ss: 0068
Process hald-addon-keyb (pid: 2837, ti=c1a12000 task=dffc3000 task.ti=c1a12000)
Stack: 00000000 dffc3000 c012d92d c1a13f6c c1a13f6c dfb6a240 f899ca3d b7fad000 
       00001000 c015a71c c1a13fa4 dfb6a240 fffffff7 00000001 c1a12000 c015ab68 
       c1a13fa4 00000000 00000000 00000000 00000004 0804e550 c0102c11 00000004 
Call Trace:
 [<c012d92d>] autoremove_wake_function+0x0/0x2d
 [<f899ca3d>] evdev_read+0x0/0x164 [evdev]
 [<c015a71c>] vfs_read+0x9f/0x141
 [<c015ab68>] sys_read+0x3c/0x63
 [<c0102c11>] sysenter_past_esp+0x56/0x79
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 
EIP: [<f8994b12>] 0xf8994b12 SS:ESP 0068:c1a13f60

* Maybe the above is already enough to make the system instable (at least there
is no more output in dmesg), but I have tried to run microcode_ctl, too. There
is two lines of output which I could not save. Basically it says that it
successfully updated the microcode to some device node and something about the
length of it. X crashes soon after, when I tried to log in. Reboot without
further ado boots into a hanging system right away.

I will attach the output of hwinfo, too, but I don't know what else I can
provide for you.


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