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netfilter: nf_nat: Fix return NF_DROP in nfnetlink_parse_nat_setup 

The __nf_nat_alloc_null_binding invokes nf_nat_setup_info which may
return NF_DROP when memory is exhausted, so convert NF_DROP to -ENOMEM
to make ctnetlink happy. Or ctnetlink_setup_nat treats it as a success
when one error NF_DROP happens actully.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Gao Feng 2017-04-12 18:33:03 +08:00 committed by Pablo Neira Ayuso
parent a702ece3b1
commit 7025bac47f
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nf_nat_core.c
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@ -806,7 +806,7 @@ nfnetlink_parse_nat_setup(struct nf_conn *ct,
/* No NAT information has been passed, allocate the null-binding */
if (attr == NULL)
return __nf_nat_alloc_null_binding(ct, manip);
return __nf_nat_alloc_null_binding(ct, manip) == NF_DROP ? -ENOMEM : 0;
err = nfnetlink_parse_nat(attr, ct, &range, l3proto);
if (err < 0)