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SubjectRe: [00/19] review
On 08/27/2011 01:01 AM, Greg KH wrote:
> This is the start of the longterm review cycle for the release.
> There are 19 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let us know. If anyone is a maintainer of the proper subsystem, and
> wants to add a Signed-off-by: line to the patch, please respond with it.
> Responses should be made by Monday, August 29, 2011, 12:00:00 UTC.
> Anything received after that time might be too late.
> The whole patch series can be found in one patch at:
> and the diffstat can be found below.
> thanks,
> greg k-h

upstream commit d5aa407f59f5b83d2c50ec88f5bf56d40f1f8978 ("tunnels: fix
netns vs proto registration ordering") , which was included in, was not backported correctly, and results in a NULL
pointer dereference in ip6_tunnel.c for longterm kernels and

The bug has been reported at the Gentoo [1] and Debian [2] bugzillas,
and fixed in the latest grsec-patches [3], but I haven't found a report
for this at the lkml (or at the kernel's bugzilla).

The fix is trivial, and I think it can be included in, if
If you want, I can submit it with a new email to

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 7fb3e02..53e0d51 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1466,7 +1466,7 @@ static int __init ip6_tunnel_init(void)
int err;

- err = register_pernet_device(&ip6_tnl_net_ops);
+ err = register_pernet_gen_device(&ip6_tnl_net_id, &ip6_tnl_net_ops);
if (err < 0)
goto out_pernet;

Btw, this has been fixed in grsec-patches, and an identical patch has
also been posted at the Debian bugzilla, so I'm not sure about the
Signed-off-by and Reported-by tags.

Stratos Psomadakis

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