diff --git a/bbfdmd/src/add_delete.c b/bbfdmd/src/add_delete.c
index 2af22532..03e721e2 100644
--- a/bbfdmd/src/add_delete.c
+++ b/bbfdmd/src/add_delete.c
@@ -35,7 +35,7 @@ static int bbfdm_add_object(bbfdm_data_t *data)
 
 	void *array = blobmsg_open_array(&data->bb, "results");
 
-	fault = bbf_entry_method(&data->bbf_ctx, BBF_ADD_OBJECT);
+	fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_ADD_OBJECT);
 	if (fault) {
 		fill_err_code_table(data, fault);
 	} else {
@@ -64,7 +64,7 @@ static int bbfdm_del_object(bbfdm_data_t *data)
 
 		INFO("Req to delete object |%s|", data->bbf_ctx.in_param);
 
-		fault = bbf_entry_method(&data->bbf_ctx, BBF_DEL_OBJECT);
+		fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_DEL_OBJECT);
 		if (fault) {
 			fill_err_code_table(data, fault);
 		} else {
diff --git a/bbfdmd/src/bbfdmd.c b/bbfdmd/src/bbfdmd.c
index 786484fa..c985e20b 100644
--- a/bbfdmd/src/bbfdmd.c
+++ b/bbfdmd/src/bbfdmd.c
@@ -64,6 +64,21 @@ static json_object *deamon_json_obj = NULL;
 char UBUS_METHOD_NAME[32] = "bbfdm";
 bool enable_plugins = true;
 
+static void sig_handler(int sig)
+{
+	if (sig == SIGSEGV) {
+		handle_pending_signal(sig);
+	} else if (sig == SIGUSR1) {
+		ERR("# Exception in PID[%ld]", getpid());
+	}
+}
+
+static void signal_init(void)
+{
+	signal(SIGSEGV, sig_handler);
+	signal(SIGUSR1, sig_handler);
+}
+
 static void usage(char *prog)
 {
 	fprintf(stderr, "Usage: %s [options]\n", prog);
@@ -215,6 +230,8 @@ static int bbfdm_start_deferred(bbfdm_data_t *data, void (*EXEC_CB)(bbfdm_data_t
 			exit(EXIT_FAILURE);
 		}
 
+		// child initialise signal to prevent segfaults
+		signal_init();
 		/* free fd's and memory inherited from parent */
 		ubus_shutdown(data->ctx);
 		uloop_done();
@@ -1047,7 +1064,7 @@ static void update_instances_list(struct list_head *inst)
 
 	bbf_init(&bbf_ctx);
 
-	if (0 == bbf_entry_method(&bbf_ctx, BBF_INSTANCES)) {
+	if (0 == bbfdm_cmd_exec(&bbf_ctx, BBF_INSTANCES)) {
 		struct dm_parameter *nptr_dp;
 
 		list_for_each_entry(nptr_dp, &bbf_ctx.list_parameter, list) {
@@ -1117,6 +1134,8 @@ static int fork_instance_checker(struct bbfdm_context *u)
 	child = fork();
 	if (child == 0) {
 		prctl(PR_SET_NAME, (unsigned long) "bbfdm_instance");
+		// child initialise signal to prevent segfaults
+		signal_init();
 		/* free fd's and memory inherited from parent */
 		ubus_shutdown(&u->ubus_ctx);
 		uloop_done();
@@ -1310,6 +1329,8 @@ int main(int argc, char **argv)
 		return -1;
 	}
 
+	signal_init();
+
 	err = register_events_to_ubus(&bbfdm_ctx.ubus_ctx, &bbfdm_ctx.event_handlers);
 	if (err != 0)
 		goto exit;
diff --git a/bbfdmd/src/events.c b/bbfdmd/src/events.c
index e62dfc5e..31ab855f 100644
--- a/bbfdmd/src/events.c
+++ b/bbfdmd/src/events.c
@@ -282,7 +282,7 @@ bool is_registered_event(char *name)
 
 	bbf_init(&bbf_ctx);
 
-	if (0 == bbf_entry_method(&bbf_ctx, BBF_SCHEMA)) {
+	if (0 == bbfdm_cmd_exec(&bbf_ctx, BBF_SCHEMA)) {
 		struct dm_parameter *param;
 
 		list_for_each_entry(param, &bbf_ctx.list_parameter, list) {
diff --git a/bbfdmd/src/get.c b/bbfdmd/src/get.c
index df36339a..a2cf22bf 100644
--- a/bbfdmd/src/get.c
+++ b/bbfdmd/src/get.c
@@ -45,7 +45,7 @@ void bbfdm_get_value_async(bbfdm_data_t *data, void *output)
 
 		data->bbf_ctx.in_param = pn->path;
 
-		fault = bbf_entry_method(&data->bbf_ctx, BBF_GET_VALUE);
+		fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_GET_VALUE);
 		if (fault) {
 			fill_err_code_table(data, fault);
 		} else {
@@ -106,7 +106,7 @@ void bbfdm_get_value(bbfdm_data_t *data)
 
 		data->bbf_ctx.in_param = pn->path;
 
-		fault = bbf_entry_method(&data->bbf_ctx, BBF_GET_VALUE);
+		fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_GET_VALUE);
 		if (fault) {
 			fill_err_code_table(data, fault);
 		} else {
@@ -163,7 +163,7 @@ void bbfdm_get_names(bbfdm_data_t *data)
 
 		data->bbf_ctx.in_param = pn->path;
 
-		fault = bbf_entry_method(&data->bbf_ctx, BBF_GET_NAME);
+		fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_GET_NAME);
 		if (fault) {
 			fill_err_code_table(data, fault);
 		} else {
@@ -205,7 +205,7 @@ void bbfdm_get_instances(bbfdm_data_t *data)
 
 		data->bbf_ctx.in_param = pn->path;
 
-		fault = bbf_entry_method(&data->bbf_ctx, BBF_INSTANCES);
+		fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_INSTANCES);
 		if (fault) {
 			fill_err_code_table(data, fault);
 		} else {
@@ -334,7 +334,7 @@ int bbf_dm_get_supported_dm(bbfdm_data_t *data)
 
 		data->bbf_ctx.in_param = pn->path;
 
-		fault = bbf_entry_method(&data->bbf_ctx, BBF_SCHEMA);
+		fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_SCHEMA);
 		if (fault) {
 			fill_err_code_table(data, fault);
 		} else {
diff --git a/bbfdmd/src/get_helper.c b/bbfdmd/src/get_helper.c
index cc7d2592..9a12ba50 100644
--- a/bbfdmd/src/get_helper.c
+++ b/bbfdmd/src/get_helper.c
@@ -47,6 +47,42 @@ static struct {
 	int timeout_ms;
 } g_current_trans = {.trans_id=0, .timeout_ms=10000};
 
+static jmp_buf gs_jump_location;
+static bool gs_jump_called_by_bbf = false;
+
+void handle_pending_signal(int sig)
+{
+	if (gs_jump_called_by_bbf) {
+		siglongjmp(gs_jump_location, 1);
+	}
+
+	ERR("Exception [%d] not cause by bbf dm, exit with error", sig);
+	exit(1);
+}
+
+int bbfdm_cmd_exec(struct dmctx *bbf_ctx, int cmd)
+{
+	int fault = 0;
+
+	if (bbf_ctx->in_param == NULL)
+		return USP_FAULT_INTERNAL_ERROR;
+
+	if (sigsetjmp(gs_jump_location, 1) == 0) {
+		gs_jump_called_by_bbf = true;
+		fault = bbf_entry_method(bbf_ctx, cmd);
+	} else {
+		ERR("PID [%ld]::Exception on [%d => %s]", getpid(), cmd, bbf_ctx->in_param);
+		fault = USP_FAULT_INTERNAL_ERROR;
+	}
+
+	gs_jump_called_by_bbf = false;
+
+	if (fault)
+		WARNING("Fault [%d => %d => %s]", fault, cmd, bbf_ctx->in_param);
+
+	return fault;
+}
+
 void bb_add_string(struct blob_buf *bb, const char *name, const char *value)
 {
 	blobmsg_add_string(bb, name, value ? value : "");
diff --git a/bbfdmd/src/get_helper.h b/bbfdmd/src/get_helper.h
index e46d1021..40affe1a 100644
--- a/bbfdmd/src/get_helper.h
+++ b/bbfdmd/src/get_helper.h
@@ -4,7 +4,6 @@
 #include "bbfdmd.h"
 #include "common.h"
 #include "libbbfdm-api/dmbbf.h"
-#include "libbbfdm-api/dmentry.h"
 
 #include <libubus.h>
 
@@ -20,6 +19,10 @@ struct pathNode {
 	char path[MAX_DM_PATH];
 };
 
+void handle_pending_signal(int sig);
+
+int bbfdm_cmd_exec(struct dmctx *bbf_ctx, int cmd);
+
 void bbf_init(struct dmctx *dm_ctx);
 void bbf_cleanup(struct dmctx *dm_ctx);
 void bbf_sub_init(struct dmctx *dm_ctx);
diff --git a/bbfdmd/src/operate.c b/bbfdmd/src/operate.c
index 5b34292e..f147b93b 100644
--- a/bbfdmd/src/operate.c
+++ b/bbfdmd/src/operate.c
@@ -39,7 +39,7 @@ static int bbfdm_dm_operate(bbfdm_data_t *data)
 	blobmsg_add_string(&data->bb, "path", data->bbf_ctx.in_param);
 	blobmsg_add_string(&data->bb, "data", data->bbf_ctx.linker);
 
-	fault = bbf_entry_method(&data->bbf_ctx, BBF_OPERATE);
+	fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_OPERATE);
 	if (fault == 0) {
 		struct dm_parameter *n;
 
diff --git a/bbfdmd/src/set.c b/bbfdmd/src/set.c
index b5b8e79d..f9d87b3d 100644
--- a/bbfdmd/src/set.c
+++ b/bbfdmd/src/set.c
@@ -38,7 +38,7 @@ int bbfdm_set_value(bbfdm_data_t *data)
 		data->bbf_ctx.in_param = pv->param;
 		data->bbf_ctx.in_value = pv->val;
 
-		fault = bbf_entry_method(&data->bbf_ctx, BBF_SET_VALUE);
+		fault = bbfdm_cmd_exec(&data->bbf_ctx, BBF_SET_VALUE);
 		if (fault) {
 			fill_err_code_table(data, fault);
 		} else {