--- a/dbutil.c	Mon Feb 26 22:43:12 2018 +0800
+++ b/dbutil.c	Sun Mar 04 15:07:09 2018 +0800
@@ -120,6 +120,13 @@
 
 	_dropbear_log(LOG_INFO, fmtbuf, param);
 
+#if DROPBEAR_FUZZ
+	/* longjmp before cleaning up svr_opts */
+    if (fuzz.do_jmp) {
+        longjmp(fuzz.jmp, 1);
+    }
+#endif
+
 	exit(exitcode);
 }
 
@@ -392,6 +399,7 @@
 void printmpint(const char *label, mp_int *mp) {
 	buffer *buf = buf_new(1000);
 	buf_putmpint(buf, mp);
+	fprintf(stderr, "%d bits ", mp_count_bits(mp));
 	printhex(label, buf->data, buf->len);
 	buf_free(buf);
 
@@ -520,57 +528,26 @@
 	}
 }
 	
-void * m_malloc(size_t size) {
-
-	void* ret;
-
-	if (size == 0) {
-		dropbear_exit("m_malloc failed");
-	}
-	ret = calloc(1, size);
-	if (ret == NULL) {
-		dropbear_exit("m_malloc failed");
-	}
-	return ret;
-
-}
-
-void * m_strdup(const char * str) {
-	char* ret;
-
-	ret = strdup(str);
-	if (ret == NULL) {
-		dropbear_exit("m_strdup failed");
-	}
-	return ret;
-}
-
-void * m_realloc(void* ptr, size_t size) {
-
-	void *ret;
-
-	if (size == 0) {
-		dropbear_exit("m_realloc failed");
-	}
-	ret = realloc(ptr, size);
-	if (ret == NULL) {
-		dropbear_exit("m_realloc failed");
-	}
-	return ret;
-}
-
 void setnonblocking(int fd) {
 
 	TRACE(("setnonblocking: %d", fd))
 
+#if DROPBEAR_FUZZ
+	if (fuzz.fuzzing) {
+		return;
+	}
+#endif
+
 	if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
 		if (errno == ENODEV) {
 			/* Some devices (like /dev/null redirected in)
 			 * can't be set to non-blocking */
 			TRACE(("ignoring ENODEV for setnonblocking"))
 		} else {
+		{
 			dropbear_exit("Couldn't set nonblocking");
 		}
+		}
 	}
 	TRACE(("leave setnonblocking"))
 }
@@ -652,7 +629,14 @@
 #endif 
 
 time_t monotonic_now() {
+#if DROPBEAR_FUZZ
+	if (fuzz.fuzzing) {
+		/* time stands still when fuzzing */
+		return 5;
+	}
+#endif
 #if defined(__linux__) && defined(SYS_clock_gettime)
+	{
 	static clockid_t clock_source = -2;
 
 	if (clock_source == -2) {
@@ -669,9 +653,11 @@
 		}
 		return ts.tv_sec;
 	}
+	}
 #endif /* linux clock_gettime */
 
 #if defined(HAVE_MACH_ABSOLUTE_TIME)
+	{
 	/* OS X, see https://developer.apple.com/library/mac/qa/qa1398/_index.html */
 	static mach_timebase_info_data_t timebase_info;
 	if (timebase_info.denom == 0) {
@@ -679,6 +665,7 @@
 	}
 	return mach_absolute_time() * timebase_info.numer / timebase_info.denom
 		/ 1e9;
+	}
 #endif /* osx mach_absolute_time */
 
 	/* Fallback for everything else - this will sometimes go backwards */
@@ -700,6 +687,6 @@
 		TRACE(("error opening directory %s for fsync: %s", dir, strerror(errno)))
 	}
 
-	free(fn_dir);
+	m_free(fn_dir);
 #endif
 }