tree e93cd06368bf1578dcc850815b2a2af9bd26ee6b
parent 9c3f3794926a997b1cab6c42480ff300efa2d162
author Gao Feng <fgao@ikuai8.com> 1490437476 +0800
committer Pablo Neira Ayuso <pablo@netfilter.org> 1490615353 +0200

netfilter: nf_nat_snmp: Fix panic when snmp_trap_helper fails to register

In the commit 93557f53e1fb ("netfilter: nf_conntrack: nf_conntrack snmp
helper"), the snmp_helper is replaced by nf_nat_snmp_hook. So the
snmp_helper is never registered. But it still tries to unregister the
snmp_helper, it could cause the panic.

Now remove the useless snmp_helper and the unregister call in the
error handler.

Fixes: 93557f53e1fb ("netfilter: nf_conntrack: nf_conntrack snmp helper")
Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>