Bug#671895: [sparc] Kernel NULL pointer dereference in sungem/gem_poll() (Re: updates)

[Moritz Muehlenhoff <jmm@inutil.org>]

reassign 671895 src:linux
thanks

On Tue, May 22, 2012 at 07:26:22PM -0300, gustavo panizzo <gfa> wrote:
> On Fri, May 11, 2012 at 11:04:22PM +0100, Jurij Smakov wrote:
> [snip]
> 
> > 
> > Only two non-trivial things here: execution of ethtool_lite(if_name) 
> > and invocation of arping. I would put my money on the former (defined 
> > in ethtool_lite.c), because it uses low-level ioctls to query the 
> > interface state.
> > 
> > You can test whether running it would trigger a failure on your 
> > machine by downloading ethtool_lite.c and building it as a standalone 
> > binary, the following commands appear to do the trick:
> > 
> > $ sudo apt-get build-dep netcfg
> > [...]
> > $ gcc -o ethtool-lite -DTEST ethtool-lite.c -ldebconfclient -ldebian-installer
> > $ sudo ./ethtool-lite eth0
> > ethtool-lite: eth0 is connected.
> > $
> > 
> > If that triggers a null pointer exception on your machine (try it both 
> > with and without network brought up and check dmesg afterwards), we 
> > will be in a very good position to report it upstream for fixing.
> i cannot repeat the issue using ethtool-lite (or arping) while booting
> from disk, i can repeat the issue booting from network (22/05/2012
> image) running netcfg or udhcp
> 
> 
> also i can repeat the issue running 
> ~ # ip link set dev eth0 up
> while the cable is plugged in, or running the command and plugging the
> cable later
> 
> if i (after getting the netimage) remove the link on eth0 and plug
> eth1, installer works fine

Does this still occur with current kernels?

Cheers,
       Moritz