Re: [PATCH] ipv6: Prevent access to uninitialized fib_table_hash via /proc/net/ipv6_route

On Fri, Jun 15, 2012 at 10:15:02PM -0700, David Miller wrote:

Thomas, this patch is buggy.

We will now initialize fib6_init() before ip6_net_route_net_ops is registerd.

This causes fib6_net_init() to run before net->ipv6.ip6_null_entry it
initialized.

Any route lookup will crash when we dereference a root's ->leaf
because it will be NULL.

Please test your changes more thoroughly.

Sorry, that this has slipped through. I must have booted the wrong
kernel. I even had this run by an external tester to confirm that
the original panic disapppeared...

I'll come up with a new fix.