BUG: unable to handle kernel NULL pointer dereference at 00000040

[Daan Jonker]

Bug while opening Hamachi-gui. According to a system information pop up the kernel became unstable.

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: daanjonker 2238 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with VIA1612A at irq 9'
   Mixer name : 'VIA Technologies VIA1612A'
   Components : 'AC97a:56494161'
   Controls : 37
   Simple ctrls : 23
Date: Fri Oct 30 07:39:05 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=590560c6-6e01-4f0d-bb64-46fccff292fc
MachineType: FUJITSU SIEMENS Amilo M1425
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
PccardctlIdent:
 Socket 0:
   no product info available
 Socket 1:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
 Socket 1:
   no card
ProcCmdLine: root=UUID=87010bbc-4f7a-4c5d-ae0d-72575e9bb483 ro quiet splash
ProcVersionSignature: hostname 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
RfKill:

SourcePackage: linux
Tags: kernel-oops
Title: BUG: unable to handle kernel NULL pointer dereference at 00000040
Uname: Linux 2.6.31-14-generic i686
dmi.bios.date: 12/29/2004
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080010
dmi.board.name: To be filled by O.E.M.
dmi.board.vendor: To be filled by O.E.M.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080010:bd12/29/2004:svnFUJITSUSIEMENS:pnAmiloM1425:pvrToBeFilledByO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: Amilo M1425
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: FUJITSU SIEMENS

[fredrik (fredrik-pipemore)]

Appears to me on every reboot.
I've just upgraded 9.04 --> 9.10

[fredrik (fredrik-pipemore)]

Think I tracked my problem down to this:
Hamachi's binary is compressed with upx. You just need to uncompress it.

Good Luck Guys

note: /usr/bin is were hamachi's binary was on my computer.

sudo apt-get install upx-ucl
cd /usr/bin
sudo upx -d hamachi
Ultimate Packer for eXecutables
Copyright (C) 1996,1997,1998,1999,2000,2001,2002,2003,2004,2005, 2006,2007
UPX 3.01 Markus Oberhumer, Laszlo Molnar & John Reiser Jul 31st 2007

File size Ratio Format Name
-------------------- ------ ----------- -----------
830676 <- 331144 39.86% linux/386 hamachi

Unpacked 1 file.

[ujean (eugenio-fullsite)]

It worked for me.
thanks

[urfe (arkine)]

Recent 9.04 --> 9.10 user here. Tried fredrik's steps and got Hamachi working but still have this error pop up every time I launch it.

[Nicolò Barbon (smilzoboboz)]

Thanks Fredrik it was packed, now everything works (I used the same steps to unpack mugen-linux too)

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 437258, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.