Bug#633738: ip6_tunnel: kernel BUG at net_namespace.c:497

[dann frazier <dannf@dannf.org>]

tags 633738 + lenny
thanks

On Fri, Jul 15, 2011 at 03:15:32PM +0100, Ben Hutchings wrote:
> On Thu, 2011-07-14 at 19:03 +0200, Arnaud Patard wrote:
> > Alexander Clouter <alex@digriz.org.uk> writes:
> > 
> > Hi,
> > 
> > > [   33.356789] [<c02397ec>] (net_assign_generic+0x3c/0xbc) from [<bf24d3d0>] (ip6_tnl_init_net+0x98/0x19c [ip6_tunnel])
> > > [   33.367378] [<bf24d3d0>] (ip6_tnl_init_net+0x98/0x19c [ip6_tunnel]) from [<c023942c>] (register_pernet_operations+0x40/0xf4)
> > > [   33.378658] [<c023942c>] (register_pernet_operations+0x40/0xf4) from [<c02395c0>] (register_pernet_device+0x20/0x54)
> > > [   33.389240] [<c02395c0>] (register_pernet_device+0x20/0x54) from [<bf25200c>] (ip6_tunnel_init+0xc/0x84 [ip6_tunnel])
> > > [   33.399915] [<bf25200c>] (ip6_tunnel_init+0xc/0x84 [ip6_tunnel]) from [<c002734c>] (do_one_initcall+0x6c/0x1e4)
> > > [   33.410062] [<c002734c>] (do_one_initcall+0x6c/0x1e4) from [<c00738ec>] (sys_init_module+0xc0/0x1f0)
> > > [   33.419241] [<c00738ec>] (sys_init_module+0xc0/0x1f0) from [<c0027ea0>] (ret_fast_syscall+0x0/0x28)
> > > [   33.428333] Code: e1a01000 e59f000c eb0a2ec7 e3a03000 (e5833000)
> > > [   33.434502] ---[ end trace bf87ce5c849aaa8e ]---
> > > Segmentation fault
> > > Failed to bring up iptv-shironeko.
> > > ----
> > >
> > > This is a regression as I was able to do all this with earlier kernels; definately 2.6.32-34squeeze1.
> > 
> > hm... looks like it's from the backport of mainline commit
> > d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978. It's changing a call to
> > register_pernet_gen_device() into a call to
> > register_pernet_device().
> [...]
> 
> Right.  And it looks like this affects lenny as well (since
> 2.6.26-26lenny3).

Yep, I used basically the same backport for both updates. Apologies
for the regression. 

Alexander,
  I'd appreciate it if you could test Arnaud's proposed fix in your
configuration to help verify that no other issues remain.