netfilter: nf_conntrack: ct_cpu_seq_next should increase position index

commit dc15af8e9dbd039ebb06336597d2c491ef46ab74 upstream.

If .next function does not change position index,
following .show function will repeat output related
to current position index.

Cc: stable@vger.kernel.org
Fixes: 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code ...")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206283
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 13279f6..4c94f3b 100644 (file)
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -390,7 +390,7 @@ static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
                *pos = cpu + 1;
                return per_cpu_ptr(net->ct.stat, cpu);
        }
-
+       (*pos)++;
        return NULL;
 }