diff --git a/iscsi-scst/kernel/event.c b/iscsi-scst/kernel/event.c
index 72eff85e0..afb796d81 100644
--- a/iscsi-scst/kernel/event.c
+++ b/iscsi-scst/kernel/event.c
@@ -30,13 +30,9 @@ static u32 iscsid_pid;
 
 static int event_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
-	u32 uid, pid, seq;
-	char *data;
+	u32 pid;
 
-	pid  = NETLINK_CREDS(skb)->pid;
-	uid  = NETLINK_CREDS(skb)->uid;
-	seq  = nlh->nlmsg_seq;
-	data = NLMSG_DATA(nlh);
+	pid = NETLINK_CREDS(skb)->pid;
 
 	iscsid_pid = pid;
 
diff --git a/iscsi-scst/kernel/target.c b/iscsi-scst/kernel/target.c
index e9197d6e0..624451491 100644
--- a/iscsi-scst/kernel/target.c
+++ b/iscsi-scst/kernel/target.c
@@ -121,7 +121,6 @@ int __add_target(struct iscsi_kern_target_info *info)
 	int err;
 	u32 tid = info->tid;
 	struct iscsi_target *target = NULL; /* to calm down sparse */
-	struct iscsi_kern_params_info *params_info;
 	struct iscsi_kern_attr *attr_info;
 	union add_info_union {
 		struct iscsi_kern_params_info params_info;
@@ -157,7 +156,6 @@ int __add_target(struct iscsi_kern_target_info *info)
 		err = -ENOMEM;
 		goto out;
 	}
-	params_info = (struct iscsi_kern_params_info *)add_info;
 	attr_info = (struct iscsi_kern_attr *)add_info;
 
 	if (tid == 0) {
diff --git a/iscsi-scst/usr/iscsid.c b/iscsi-scst/usr/iscsid.c
index 8b5c53dad..c9d993017 100644
--- a/iscsi-scst/usr/iscsid.c
+++ b/iscsi-scst/usr/iscsid.c
@@ -477,7 +477,7 @@ out:
 static void login_start(struct connection *conn)
 {
 	struct iscsi_login_req_hdr *req = (struct iscsi_login_req_hdr *)&conn->req.bhs;
-	char *name, *alias, *session_type, *target_name;
+	char *name, *session_type, *target_name;
 
 	conn->cid = be16_to_cpu(req->cid);
 	conn->sid.id64 = req->sid.id64;
@@ -495,7 +495,6 @@ static void login_start(struct connection *conn)
 		return;
 	}
 
-	alias = text_key_find(conn, "InitiatorAlias");
 	session_type = text_key_find(conn, "SessionType");
 	target_name = text_key_find(conn, "TargetName");
 
diff --git a/iscsi-scst/usr/isns.c b/iscsi-scst/usr/isns.c
index 777e44880..1dfb98479 100644
--- a/iscsi-scst/usr/isns.c
+++ b/iscsi-scst/usr/isns.c
@@ -760,7 +760,11 @@ static int recv_pdu(int fd, struct isns_io *rx, struct isns_hdr *hdr)
 static char *print_scn_pdu(struct isns_hdr *hdr)
 {
 	struct isns_tlv *tlv = (struct isns_tlv *)hdr->pdu;
-	uint16_t function, length, flags, transaction, sequence;
+	uint16_t function __attribute__((unused));
+	uint16_t length;
+	uint16_t flags __attribute__((unused));
+	uint16_t transaction __attribute__((unused));
+	uint16_t sequence __attribute__((unused));
 	char *name = NULL;
 
 	get_hdr_param(hdr, function, length, flags, transaction, sequence);
@@ -803,7 +807,10 @@ next:
 static void qry_rsp_handle(struct isns_hdr *hdr)
 {
 	struct isns_tlv *tlv;
-	uint16_t function, length, flags, transaction, sequence;
+	uint16_t function __attribute__((unused));
+	uint16_t flags __attribute__((unused));
+	uint16_t sequence __attribute__((unused));
+	uint16_t length, transaction;
 	uint32_t status = (uint32_t) (*hdr->pdu);
 	struct isns_qry_mgmt *mgmt, *n;
 	struct target *target;
@@ -899,8 +906,11 @@ int isns_handle(int is_timeout)
 	int err;
 	struct isns_io *rx = &isns_rx;
 	struct isns_hdr *hdr = (struct isns_hdr *)rx->buf;
-	uint32_t result;
-	uint16_t function, length, flags, transaction, sequence;
+	uint16_t function;
+	uint16_t length __attribute__((unused));
+	uint16_t flags __attribute__((unused));
+	uint16_t transaction __attribute__((unused));
+	uint16_t sequence __attribute__((unused));
 	char *name = NULL;
 
 	if (isns_server == NULL)
@@ -922,7 +932,6 @@ int isns_handle(int is_timeout)
 	}
 
 	get_hdr_param(hdr, function, length, flags, transaction, sequence);
-	result = ntohl((uint32_t) hdr->pdu[0]);
 
 	switch (function) {
 	case ISNS_FUNC_DEV_ATTR_REG_RSP:
@@ -1015,7 +1024,10 @@ int isns_scn_handle(int is_accept)
 	int err;
 	struct isns_io *rx = &scn_rx;
 	struct isns_hdr *hdr = (struct isns_hdr *)rx->buf;
-	uint16_t function, length, flags, transaction, sequence;
+	uint16_t function, transaction;
+	uint16_t length __attribute__((unused));
+	uint16_t flags __attribute__((unused));
+	uint16_t sequence __attribute__((unused));
 	char *name = NULL;
 
 	log_error("%s %d: %d", __func__, __LINE__, is_accept);
diff --git a/scst/src/dev_handlers/scst_user.c b/scst/src/dev_handlers/scst_user.c
index 1e7d34de7..af952dd12 100644
--- a/scst/src/dev_handlers/scst_user.c
+++ b/scst/src/dev_handlers/scst_user.c
@@ -897,7 +897,7 @@ static void dev_user_flush_dcache(struct scst_user_cmd *ucmd)
 	 */
 
 	for (i = 0; (bufflen > 0) && (i < buf_ucmd->num_data_pages); i++) {
-		struct page *page;
+		struct page *page __attribute__((unused));
 		page = buf_ucmd->data_pages[i];
 #ifdef ARCH_HAS_FLUSH_ANON_PAGE
 		struct vm_area_struct *vma = find_vma(current->mm, start);