Not all objects need an update operation. If the object type doesn't implement
an update operation and the user tries to update it there will be a EOPNOTSUPP
error instead of a null pointer.
Fixes: d62d0ba97b58 ("netfilter: nf_tables: Introduce stateful object update
operation")
Signed-off-by: Fernando Fernandez Mancera <[email protected]>
---
net/netfilter/nf_tables_api.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index cf767bc58e18..013d28899cab 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5140,6 +5140,9 @@ static int nf_tables_updobj(const struct nft_ctx *ctx,
struct nft_trans *trans;
int err;
+ if (!obj->ops->update)
+ return -EOPNOTSUPP;
+
trans = nft_trans_alloc(ctx, NFT_MSG_NEWOBJ,
sizeof(struct nft_trans_obj));
if (!trans)
--
2.20.1
