nf_reject_ipv4: module license 'unspecified' taints kernel

From: Dave Young
Date: Fri Oct 10 2014 - 05:19:13 EST


With today's linus tree, I got below kmsg:
[ 23.545204] nf_reject_ipv4: module license 'unspecified' taints kernel.
[ 23.551886] Disabling lock debugging due to kernel taint
[ 23.557302] nf_reject_ipv4: Unknown symbol lock_is_held (err 0)
[ 23.563256] nf_reject_ipv4: Unknown symbol rcu_read_lock_bh_held (err 0)
[ 23.569992] nf_reject_ipv4: Unknown symbol ip_local_out_sk (err 0)
[ 23.576206] nf_reject_ipv4: Unknown symbol debug_lockdep_rcu_enabled (err 0)
[ 23.583290] nf_reject_ipv4: Unknown symbol rcu_is_watching (err 0)
[ 23.589523] nf_reject_ipv4: Unknown symbol rcu_lock_map (err

It could be caused by below commit:

commit c8d7b98bec43faaa6583c3135030be5eb4693acb
Author: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Date: Fri Sep 26 14:35:15 2014 +0200

netfilter: move nf_send_resetX() code to nf_reject_ipvX modules

Move nf_send_reset() and nf_send_reset6() to nf_reject_ipv4 and
nf_reject_ipv6 respectively. This code is shared by x_tables and

Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>

I believe there's similar issue for ipv6 reject part though I have disabled ipv6
in my .config.

Let me know if you need any furthur information.

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