[PATCH net 7/9] ipvs: reload ip header after head reallocation
Florian Westphal <[email protected]>
| Newsgroups | gmane.comp.security.firewalls.netfilter.devel,gmane.linux.network |
|---|---|
| Message-ID | <[email protected]> |
__ip_vs_get_out_rt() calls skb_ensure_writable() which may
reallocate skb->head.
Fixes: 8d8e20e2d7bb ("ipvs: Decrement ttl")
Cc: [email protected]
Assisted-by: Claude:claude-sonnet-4-6
Acked-by: Julian Anastasov <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>
---
net/netfilter/ipvs/ip_vs_xmit.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index ce542ed4b013..9fef4335da13 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -736,13 +736,11 @@ int
ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, struct ip_vs_iphdr *ipvsh)
{
- struct iphdr *iph = ip_hdr(skb);
-
- if (__ip_vs_get_out_rt(cp->ipvs, cp->af, skb, NULL, iph->daddr,
+ if (__ip_vs_get_out_rt(cp->ipvs, cp->af, skb, NULL, ip_hdr(skb)->daddr,
IP_VS_RT_MODE_NON_LOCAL, NULL, ipvsh) < 0)
goto tx_error;
- ip_send_check(iph);
+ ip_send_check(ip_hdr(skb));
/* Another hack: avoid icmp_send in ip_fragment */
skb->ignore_df = 1;
--
2.54.0