On Sun, Aug 18, 2013 at 04:32:23PM +0200, Joakim Tjernlund wrote:
> The last week I have had 4 lockups which required power on/off.
> Before getting there I noticed that the machine was getting slow.
> 
> top reported high load(5-10) but there was no process consuming CPU except
> for migration/0 which were spicing 100% on and off. 
> Ping times went up with a factor of 40 too.
> 
> Eventually I got a few entries in the kernel log:
> Aug 16 12:40:51 gentoo-jocke kernel: Modules linked in: nfnetlink_log 
> nfnetlink bluetooth rfkill sg isofs ipt_MASQUERADE iptable_nat nf_nat_ipv4 
> nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT 
> xt_CHECKSUM iptable_mangle xt_tcpudp ip6table_filter ip6_tables 
> iptable_filter ip_tables ebtables x_tables autofs4 nfsd dm_crypt 
> vboxnetadp(O) vboxnetflt(O) vboxdrv(O) usbhid dm_mod kvm_intel kvm 
> snd_hda_codec_hdmi aesni_intel ablk_helper cryptd xts lrw gf128mul 
> snd_hda_codec_realtek ehci_pci ehci_hcd usbcore snd_hda_intel snd_hda_codec 
> snd_hwdep snd_pcm snd_page_alloc snd_timer snd microcode usb_common radeon 
> e1000e ttm firmware_class ptp pps_core pcspkr
> Aug 16 12:40:51 gentoo-jocke kernel: CPU 0 
> Aug 16 12:40:51 gentoo-jocke kernel: Pid: 2421, comm: X Tainted: G           
> O 3.9.11 #1 Hewlett-Packard HP Compaq 8200 Elite CMT PC/1494

The virtual box drivers are a huge mess.  Seriously, I really don't even
know how the things are able to work at all (virtual table pointers from
userspace through to the kernel?)  I spent a bunch of time to try to
clean them up and get them into mergable state, but without the ability
to also fix up the userspace side, that ended up being a dead-end.

Can you duplicate the problem without these modules loaded?  I'd blame
them for any problems you might ever have, given how crazy they are.

thanks,

greg k-h
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