From: Gao Feng <fgao@xxxxxxxxxx>
Print the warning log when fail to add seqadj extension like
nf_ct_acct_ext_add does. It could be helpful to find the problem.
Signed-off-by: Gao Feng <fgao@xxxxxxxxxx>
---
include/net/netfilter/nf_conntrack_seqadj.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/net/netfilter/nf_conntrack_seqadj.h b/include/net/netfilter/nf_conntrack_seqadj.h
index 4b33629..d548b9c 100644
--- a/include/net/netfilter/nf_conntrack_seqadj.h
+++ b/include/net/netfilter/nf_conntrack_seqadj.h
@@ -27,7 +27,13 @@ static inline struct nf_conn_seqadj *nfct_seqadj(const struct nf_conn *ct)
static inline struct nf_conn_seqadj *nfct_seqadj_ext_add(struct nf_conn *ct)
{
- return nf_ct_ext_add(ct, NF_CT_EXT_SEQADJ, GFP_ATOMIC);
+ struct nf_conn_seqadj *seqadj = nf_ct_ext_add(ct, NF_CT_EXT_SEQADJ,
+ GFP_ATOMIC);
+
+ if (!seqadj)
+ pr_warn("failed to add seqadj extension area");
+
+ return seqadj;
}
int nf_ct_seqadj_init(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
--
1.9.1
--
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