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-rw-r--r--include/net/ip.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/ip.h b/include/net/ip.h
index d1a4efedbc03..471463bfe6f9 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -402,7 +402,7 @@ static inline unsigned int ip_dst_mtu_maybe_forward(const struct dst_entry *dst,
struct net *net = dev_net(dst->dev);
unsigned int mtu;
- if (net->ipv4.sysctl_ip_fwd_use_pmtu ||
+ if (READ_ONCE(net->ipv4.sysctl_ip_fwd_use_pmtu) ||
ip_mtu_locked(dst) ||
!forwarding)
return dst_mtu(dst);