Commit 7bcbf81a authored by Julian Anastasov's avatar Julian Anastasov Committed by David S. Miller
Browse files

ipvs: avoid oops for passive FTP

Fix Passive FTP problem in ip_vs_ftp:

- Do not oops in nf_nat_set_seq_adjust (adjust_tcp_sequence) when
  iptable_nat module is not loaded

Signed-off-by: default avatarJulian Anastasov <>
Signed-off-by: default avatarSimon Horman <>
Signed-off-by: default avatarDavid S. Miller <>
parent 5e4e7573
......@@ -45,6 +45,7 @@
#include <linux/netfilter.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_nat_helper.h>
#include <linux/gfp.h>
#include <net/protocol.h>
......@@ -359,7 +360,7 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
buf_len = strlen(buf);
ct = nf_ct_get(skb, &ctinfo);
if (ct && !nf_ct_is_untracked(ct)) {
if (ct && !nf_ct_is_untracked(ct) && nfct_nat(ct)) {
/* If mangling fails this function will return 0
* which will cause the packet to be dropped.
* Mangling can only fail under memory pressure,
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