Bug#315881: [Pkg-freeciv-devel] Bug#315881: freeciv: Freeciv causes computer to hang

[Marcel Sebek]

On Sun, Jun 26, 2005 at 10:41:39PM +0100, Noel Torres wrote:
> Thomas Ledet escribió:
> 
> > Kyle McMartin wrote:
> > 
> >> On Sun, Jun 26, 2005 at 06:58:04PM +0100, Noel Torres wrote:
> >>
> >>> Every time I've started to play, I heard (after more or less time of
> >>> continuous play) a bunch of harddisk noise, and when I tried to Alt-F1
> >>> or to run 'top' or to change directory to save the game or any other
> >>> similar (kernel-related) task, it does not work and system becomes
> >>> unusable and, thus, it must be hard-rebooted.
> >>>
> >>
> >>
> >> Can you please post the specifications of your computer? Arch, processor,
> >> amount of ram, etc. Additionally, what kernel you are using.
> 
> 
> AMD K6-3 with 512MiB, running a custom 2.6.9 with no patches and the
> nvidia module. I'm with sarge and no strange packages at all (but some
> woody packages that disappeared at sarge and I need, related to
> graphical design).
Try to reproduce the hang without nvidia module loaded and with XFree nv
driver. It _must_ not be possible to hang system by an userspace program
not running with root privileges (or with some of the capabilities).

However X server is running with root privileges (maybe it gets rid of
some capabilities at startup but it must still keep some), so it is
possible for user application to expliot some weakness in Xserver to
hang system without needing extra privileges.

Maybe Xserver could not prevent such hangs because of badly designed
hardware, eg. some sequence of commands sent to GPU could hang it and
it's impossible to check commands for these sequences in realtime.

But I'm nearly sure this is not bug in Freeciv, it is bug in
kernel/nvidia module/nvidia xserver/configuration, that has only been
raised by Freeciv. I'd also suggest lowering severity of this bug
because of this. It only prevents newer versions from falling into
testing.

> 
> Also, running it from a xterm does not show stderr nor stdout abnormal info.
> 
> > 
> > 
> > Sounds to me like a faulty disk. Any entries in the syslog saying
> > anything about IO errors? Which filesystem are you running?
> > 
> > Regards,
> > Thomas Ledet
> 
> 
> No harddisk error at all in syslog. ext2 in related partition.
> 
> Noel Torres
> 
> 

-- 
Marcel Sebek

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