Hi again

On Wed, May 16, 2007 at 11:01:20AM +0200, Bastian Venthur wrote:
> Am 16.05.2007 10:18 schrieb Ola Lundqvist:
> 
> > As pptp-linux is a userspace package it can hardly give this kind
> > of problem. The problem you are describing is either hardwarde
> > fault, driver problem or kernel issue.
> 
> Perfectly possible, but how can we find out? I've already asked for help
> on #debian-kernel and -devel with no success.

I see.

> > When did this problem occur?
> 
> It happens seldom on normal traffic but quite reproducible on several
> machines when downloading large files. It happens not on every attempt,
> but often enough to quickly reproduce it.

Do it happen if you send large packets over something else than pptp?

> > Have it worked in the past?
> 
> I don't know, I've started using pptp a few weeks ago.

I see.

> > What kernel version do you use?
> 
> >> Architecture: amd64
> >> Kernel:       Linux 2.6.18-4-amd64
> 
> It is the current amd64 kernel from Etch.

Ok. One more question, is it using multiple CPU:s or something similar?

> > What kernel modules do you have loaded?
> 
> The output of lsmod is attached.
> 
> I'm sorry for my rather vague bugreport, I've already tried to gather
> some useful information via strace but it doesn't show any interesting
> hints. The only relevant stuff I could find was in the syslog right
> before the freeze.

In the attached files I could not find any ppp module. I thought you
needed that for it to work. The only module related to network traffic
I found was e1000... Or is the ppdev the ppp module maybe?

Unfortunatly I do not think you can get any help from strace, or even
gdb. What you could use is the following:
* A tcpdump (on an external machine) to see exactly what traffic that
  passes over the network just before the machine freezes.
* Some kind of kernel debug tool.

When the computer freezes. Do it totally freeze without any console
output or how do it behave?

Regards,

// Ola

> 
> Cheers,
> 
> Bastian
> 
> -- 
> Bastian Venthur                                      http://venthur.de
> Debian Developer                                 venthur at debian org
> 

> Module                  Size  Used by
> rfcomm                 47912  0 
> l2cap                  32512  5 rfcomm
> bluetooth              61572  4 rfcomm,l2cap
> nfs                   236216  0 
> nfsd                  256200  17 
> exportfs               10368  1 nfsd
> lockd                  67600  3 nfs,nfsd
> nfs_acl                 8320  2 nfs,nfsd
> sunrpc                166984  13 nfs,nfsd,lockd,nfs_acl
> ipv6                  285664  20 
> ppdev                  14088  0 
> parport_pc             41640  0 
> lp                     17736  0 
> parport                44684  3 ppdev,parport_pc,lp
> button                 12192  0 
> ac                     10376  0 
> battery                15496  0 
> autofs4                27912  0 
> deflate                 8576  0 
> zlib_deflate           24216  1 deflate
> twofish                47744  0 
> serpent                23168  0 
> aes                    31040  0 
> blowfish               13312  0 
> des                    21248  0 
> sha256                 13312  0 
> sha1                    7296  0 
> crypto_null             7296  0 
> af_key                 43540  2 
> dm_snapshot            20664  0 
> dm_mirror              25216  0 
> dm_mod                 62800  2 dm_snapshot,dm_mirror
> fuse                   48944  0 
> speedstep_centrino     12448  2 
> freq_table              9728  1 speedstep_centrino
> cpufreq_ondemand       11920  1 
> ibm_acpi               32928  0 
> fglrx                 463604  8 
> loop                   20112  0 
> tsdev                  13056  0 
> joydev                 15360  0 
> irtty_sir              13440  0 
> sir_dev                22152  1 irtty_sir
> snd_hda_intel          23708  0 
> snd_hda_codec         184192  1 snd_hda_intel
> snd_pcm_oss            48672  0 
> snd_pcm                89096  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
> snd_mixer_oss          21888  1 snd_pcm_oss
> snd_seq_dummy           8580  0 
> snd_seq_oss            37248  0 
> snd_seq_midi           13632  0 
> snd_rawmidi            31392  1 snd_seq_midi
> snd_seq_midi_event     12544  2 snd_seq_oss,snd_seq_midi
> snd_seq                59520  6 
> snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
> snd_timer              29192  2 snd_pcm,snd_seq
> snd_seq_device         13204  5 
> snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
> pcmcia                 43672  0 
> ipw3945               205348  1 
> snd                    65256  10 
> snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_pcm,snd_mixer_oss,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
> nsc_ircc               28752  0 
> i2c_i801               13076  0 
> psmouse                44432  0 
> irda                  199660  3 irtty_sir,sir_dev,nsc_ircc
> i2c_core               27776  1 i2c_i801
> ieee80211              36680  1 ipw3945
> ieee80211_crypt        11264  1 ieee80211
> serio_raw              12036  0 
> yenta_socket           31884  1 
> rsrc_nonstatic         16384  1 yenta_socket
> pcmcia_core            47012  3 pcmcia,yenta_socket,rsrc_nonstatic
> soundcore              15392  1 snd
> snd_page_alloc         14864  2 snd_hda_intel,snd_pcm
> intel_agp              29248  1 
> crc_ccitt               6784  1 irda
> pcspkr                  7808  0 
> firmware_class         15616  2 pcmcia,ipw3945
> evdev                  15360  2 
> ext3                  138512  2 
> jbd                    65392  1 ext3
> mbcache                14216  1 ext3
> ide_cd                 45088  0 
> cdrom                  40488  1 ide_cd
> sd_mod                 25856  4 
> piix                   15492  0 [permanent]
> ahci                   24708  3 
> libata                106784  1 ahci
> scsi_mod              153008  3 sd_mod,ahci,libata
> generic                11396  0 [permanent]
> ide_core              147584  3 ide_cd,piix,generic
> ehci_hcd               36104  0 
> uhci_hcd               28696  0 
> e1000                 123968  0 
> thermal                20240  0 
> processor              38248  2 speedstep_centrino,thermal
> fan                     9864  0 


-- 
 --- Ola Lundqvist systemkonsult --- M Sc in IT Engineering ----
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