nfp: bpf: Add check for nfp_app_ctrl_msg_alloc()

Add check for the return value of nfp_app_ctrl_msg_alloc() in nfp_bpf_cmsg_alloc() to prevent null pointer dereference. Fixes: ff3d43f ("nfp: bpf: implement helpers for FW map ops") Cc: [email protected] Signed-off-by: Haoxiang Li <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Paolo Abeni <[email protected]>
multipath-tcp · Feb 20, 2025 · 878e7b1 · 878e7b1
1 parent 9b6412e
commit 878e7b1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c b/drivers/net/ethernet/netronome/nfp/bpf/cmsg.c
@@ -20,6 +20,8 @@ nfp_bpf_cmsg_alloc(struct nfp_app_bpf *bpf, unsigned int size)
 	struct sk_buff *skb;
 
 	skb = nfp_app_ctrl_msg_alloc(bpf->app, size, GFP_KERNEL);
+	if (!skb)
+		return NULL;
 	skb_put(skb, size);
 
 	return skb;