diff --git a/libknet/logging.c b/libknet/logging.c
index 2efee1b9..378eef59 100644
--- a/libknet/logging.c
+++ b/libknet/logging.c
@@ -1,248 +1,248 @@
 /*
  * Copyright (C) 2010-2019 Red Hat, Inc.  All rights reserved.
  *
  * Author: Fabio M. Di Nitto <fabbione@kronosnet.org>
  *
  * This software licensed under LGPL-2.0+
  */
 
 #include "config.h"
 
 #include <strings.h>
 #include <string.h>
 #include <unistd.h>
 #include <pthread.h>
 #include <stdarg.h>
 #include <errno.h>
 #include <stdio.h>
 
 #include "internals.h"
 #include "logging.h"
 #include "threads_common.h"
 
-static struct pretty_names subsystem_names[] =
+static struct pretty_names subsystem_names[KNET_MAX_SUBSYSTEMS] =
 {
 	{ "common", KNET_SUB_COMMON },
 	{ "handle", KNET_SUB_HANDLE },
 	{ "host", KNET_SUB_HOST },
 	{ "listener", KNET_SUB_LISTENER },
 	{ "link", KNET_SUB_LINK },
 	{ "transport", KNET_SUB_TRANSPORT },
 	{ "crypto", KNET_SUB_CRYPTO },
 	{ "compress", KNET_SUB_COMPRESS },
 	{ "filter", KNET_SUB_FILTER },
 	{ "dstcache", KNET_SUB_DSTCACHE },
 	{ "heartbeat", KNET_SUB_HEARTBEAT },
 	{ "pmtud", KNET_SUB_PMTUD },
 	{ "tx", KNET_SUB_TX },
 	{ "rx", KNET_SUB_RX },
 	{ "loopback", KNET_SUB_TRANSP_LOOPBACK },
 	{ "udp", KNET_SUB_TRANSP_UDP },
 	{ "sctp", KNET_SUB_TRANSP_SCTP },
 	{ "nsscrypto", KNET_SUB_NSSCRYPTO },
 	{ "opensslcrypto", KNET_SUB_OPENSSLCRYPTO },
 	{ "zlibcomp", KNET_SUB_ZLIBCOMP },
 	{ "lz4comp", KNET_SUB_LZ4COMP },
 	{ "lz4hccomp", KNET_SUB_LZ4HCCOMP },
 	{ "lzo2comp", KNET_SUB_LZO2COMP },
 	{ "lzmacomp", KNET_SUB_LZMACOMP },
 	{ "bzip2comp", KNET_SUB_BZIP2COMP },
 	{ "zstdcomp", KNET_SUB_ZSTDCOMP },
 	{ "unknown", KNET_SUB_UNKNOWN }		/* unknown MUST always be last in this array */
 };
 
 const char *knet_log_get_subsystem_name(uint8_t subsystem)
 {
 	unsigned int i;
 
 	for (i = 0; i < KNET_MAX_SUBSYSTEMS; i++) {
 		if (subsystem_names[i].val == KNET_SUB_UNKNOWN) {
 			break;
 		}
 		if (subsystem_names[i].val == subsystem) {
 			errno = 0;
 			return subsystem_names[i].name;
 		}
 	}
 	return "unknown";
 }
 
 uint8_t knet_log_get_subsystem_id(const char *name)
 {
 	unsigned int i;
 
 	for (i = 0; i < KNET_MAX_SUBSYSTEMS; i++) {
 		if (subsystem_names[i].val == KNET_SUB_UNKNOWN) {
 			break;
 		}
 		if (strcasecmp(name, subsystem_names[i].name) == 0) {
 			errno = 0;
 			return subsystem_names[i].val;
 		}
 	}
 	return KNET_SUB_UNKNOWN;
 }
 
 static int is_valid_subsystem(uint8_t subsystem)
 {
 	unsigned int i;
 
 	for (i = 0; i < KNET_MAX_SUBSYSTEMS; i++) {
 		if ((subsystem != KNET_SUB_UNKNOWN) &&
 		    (subsystem_names[i].val == KNET_SUB_UNKNOWN)) {
 			break;
 		}
 		if (subsystem_names[i].val == subsystem) {
 			return 0;
 		}
 	}
 	return -1;
 }
 
-static struct pretty_names loglevel_names[] =
+static struct pretty_names loglevel_names[KNET_LOG_DEBUG + 1] =
 {
 	{ "ERROR", KNET_LOG_ERR },
 	{ "WARNING", KNET_LOG_WARN },
 	{ "info", KNET_LOG_INFO },
 	{ "debug", KNET_LOG_DEBUG }
 };
 
 const char *knet_log_get_loglevel_name(uint8_t level)
 {
 	unsigned int i;
 
 	for (i = 0; i <= KNET_LOG_DEBUG; i++) {
 		if (loglevel_names[i].val == level) {
 			errno = 0;
 			return loglevel_names[i].name;
 		}
 	}
 	return "ERROR";
 }
 
 uint8_t knet_log_get_loglevel_id(const char *name)
 {
 	unsigned int i;
 
 	for (i = 0; i <= KNET_LOG_DEBUG; i++) {
 		if (strcasecmp(name, loglevel_names[i].name) == 0) {
 			errno = 0;
 			return loglevel_names[i].val;
 		}
 	}
 	return KNET_LOG_ERR;
 }
 
 int knet_log_set_loglevel(knet_handle_t knet_h, uint8_t subsystem,
 			  uint8_t level)
 {
 	int savederrno = 0;
 
 	if (!knet_h) {
 		errno = EINVAL;
 		return -1;
 	}
 
 	if (is_valid_subsystem(subsystem) < 0) {
 		errno = EINVAL;
 		return -1;
 	}
 
 	if (level > KNET_LOG_DEBUG) {
 		errno = EINVAL;
 		return -1;
 	}
 
 	savederrno = get_global_wrlock(knet_h);
 	if (savederrno) {
 		log_err(knet_h, subsystem, "Unable to get write lock: %s",
 			strerror(savederrno));
 		errno = savederrno;
 		return -1;
 	}
 
 	knet_h->log_levels[subsystem] = level;
 
 	pthread_rwlock_unlock(&knet_h->global_rwlock);
 	errno = 0;
 	return 0;
 }
 
 int knet_log_get_loglevel(knet_handle_t knet_h, uint8_t subsystem,
 			  uint8_t *level)
 {
 	int savederrno = 0;
 
 	if (!knet_h) {
 		errno = EINVAL;
 		return -1;
 	}
 
 	if (is_valid_subsystem(subsystem) < 0) {
 		errno = EINVAL;
 		return -1;
 	}
 
 	if (!level) {
 		errno = EINVAL;
 		return -1;
 	}
 
 	savederrno = pthread_rwlock_rdlock(&knet_h->global_rwlock);
 	if (savederrno) {
 		log_err(knet_h, subsystem, "Unable to get write lock: %s",
 			strerror(savederrno));
 		errno = savederrno;
 		return -1;
 	}
 
 	*level = knet_h->log_levels[subsystem];
 
 	pthread_rwlock_unlock(&knet_h->global_rwlock);
 	errno = 0;
 	return 0;
 }
 
 void log_msg(knet_handle_t knet_h, uint8_t subsystem, uint8_t msglevel,
 	     const char *fmt, ...)
 {
 	va_list ap;
 	struct knet_log_msg msg;
 	size_t byte_cnt = 0;
 	int len;
 
 	if ((!knet_h) ||
 	    (subsystem == KNET_MAX_SUBSYSTEMS) ||
 	    (msglevel > knet_h->log_levels[subsystem]))
 			return;
 
 	if (knet_h->logfd <= 0)
 		goto out;
 
 	memset(&msg, 0, sizeof(struct knet_log_msg));
 	msg.subsystem = subsystem;
 	msg.msglevel = msglevel;
 
 	va_start(ap, fmt);
 #ifdef __clang__
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wformat-nonliteral"
 #endif
 	vsnprintf(msg.msg, sizeof(msg.msg), fmt, ap);
 #ifdef __clang__
 #pragma clang diagnostic pop
 #endif
 	va_end(ap);
 
 	while (byte_cnt < sizeof(struct knet_log_msg)) {
 		len = write(knet_h->logfd, &msg, sizeof(struct knet_log_msg) - byte_cnt);
 		if (len <= 0) {
 			goto out;
 		}
 
 		byte_cnt += len;
 	}
 
 out:
 	return;
 }