Bug#837123: [anna] segfault in wheezy installer
On 2016-09-14 09:29, Vincent McIntyre wrote:
> On Tue, Sep 13, 2016 at 11:03:19PM +0200, Aurelien Jarno wrote:
>
> ...
>
> > > If all of that makes no difference, what would be the next step?
> >
> > What would be interesting would be to try to reproduce the issue in
> > qemu or virtualbox, with as many things as possible close to your
> > system.
> >
>
> Just to clarify - you mean try to run the installer using a qemu VM
> as the target for installation? I can certainly try that.
Yes, that's the idea, to see if by using the same network environment
you have the same issue.
> More details.
> The target system is pxe booted and next-server takes it to a (debian)
> system running tftpd-hpa. The defaults.cfg has lots of boot targets
> but the one I have been testing with is the netboot image, in manual
> install mode. The only boot options it is given are
> 'append vga=normal initrd=yadayada'
> It also falls over if I feed it a preseed file, where we use
> 'append auto=true priority=critical vga=normal initrd=yadayda
> url=blahdeblah'
Thanks for the details. Here in a QEMU VM, both work fine.
> > Also you might want to use the console (alt+f2) to run wget by hand and
> > see if the issue happen with all hosts or only some of them.
>
> I tried to wget pages from a few web sites from the alt+f2 console.
> It segfaulted every time when I used a DNS name in the URL,
> but worked if I used an IP address in the URL.
> ping does the same thing; segfaults only when using domain names.
>
> If I put an entry in /etc/hosts and try to access that hostname,
> wget and ping also segfault, until I add this line to nsswitch.conf:
>
> hosts: files dns
>
> Then they both work for that hostname.
> The only other nsswitch.conf lines are for passwd, group & shadow.
That means the segmentation fault happen as soon as there is a name
resolution.
Aurelien
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
aurelien@aurel32.net http://www.aurel32.net
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