From: Nathan Chancellor <natechancellor@xxxxxxxxx>
commit 46c1e0621a72e0469ec4edfdb6ed4d387ec34f8a upstream.
Clang warns:
net/netfilter/nf_conntrack_core.c:2068:21: warning: variable 'ctinfo' is
uninitialized when used here [-Wuninitialized]
nf_ct_set(skb, ct, ctinfo);
^~~~~~
net/netfilter/nf_conntrack_core.c:2024:2: note: variable 'ctinfo' is
declared here
enum ip_conntrack_info ctinfo;
^
1 warning generated.
nf_conntrack_update was split up into nf_conntrack_update and
__nf_conntrack_update, where the assignment of ctinfo is in
nf_conntrack_update but it is used in __nf_conntrack_update.
Pass the value of ctinfo from nf_conntrack_update to
__nf_conntrack_update so that uninitialized memory is not used
and everything works properly.
Fixes: ee04805ff54a ("netfilter: conntrack: make conntrack userspace helpers work again")
Link: https://github.com/ClangBuiltLinux/linux/issues/1039
Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/netfilter/nf_conntrack_core.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1880,11 +1880,11 @@ static void nf_conntrack_attach(struct s
}
static int __nf_conntrack_update(struct net *net, struct sk_buff *skb,
- struct nf_conn *ct)
+ struct nf_conn *ct,
+ enum ip_conntrack_info ctinfo)
{
struct nf_conntrack_tuple_hash *h;
struct nf_conntrack_tuple tuple;
- enum ip_conntrack_info ctinfo;
struct nf_nat_hook *nat_hook;
unsigned int status;
int dataoff;
@@ -2009,7 +2009,7 @@ static int nf_conntrack_update(struct ne
return 0;
if (!nf_ct_is_confirmed(ct)) {
- err = __nf_conntrack_update(net, skb, ct);
+ err = __nf_conntrack_update(net, skb, ct, ctinfo);
if (err < 0)
return err;
}
