diff --git a/tools/lib/bpf/gen_loader.c b/tools/lib/bpf/gen_loader.c
index 3a6e1d53f287..492360ca07ea 100644
--- a/tools/lib/bpf/gen_loader.c
+++ b/tools/lib/bpf/gen_loader.c
@@ -63,6 +63,7 @@ static int realloc_insn_buf(struct bpf_gen *gen, __u32 size)
 		gen->error = -ENOMEM;
 		free(gen->insn_start);
 		gen->insn_start = NULL;
+		gen->insn_cur = NULL;
 		return -ENOMEM;
 	}
 	gen->insn_start = insn_start;
@@ -86,6 +87,7 @@ static int realloc_data_buf(struct bpf_gen *gen, __u32 size)
 		gen->error = -ENOMEM;
 		free(gen->data_start);
 		gen->data_start = NULL;
+		gen->data_cur = NULL;
 		return -ENOMEM;
 	}
 	gen->data_start = data_start;