tree 3ec35f14c5e1a12a681629e0422cf9f0e254332f
parent 5044eed48886b105a123333fe7ca97c6bd496120
author Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> 1177531648 -0700
committer David S. Miller <davem@davemloft.net> 1177531648 -0700

[NETLINK]: Infinite recursion in netlink.

Reply to NETLINK_FIB_LOOKUP messages were misrouted back to kernel,
which resulted in infinite recursion and stack overflow.

The bug is present in all kernel versions since the feature appeared.

The patch also makes some minimal cleanup:

1. Return something consistent (-ENOENT) when fib table is missing
2. Do not crash when queue is empty (does not happen, but yet)
3. Put result of lookup

Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>