diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 9f088ed8404b..7131dd4d0e3a 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -351,6 +351,32 @@ static u32 msg_used_size(u16 text_len, u16 dict_len, u32 *pad_len)
 	return size;
 }
 
+/*
+ * Define how much of the log buffer we could take at maximum. The value
+ * must be greater than two. Note that only half of the buffer is available
+ * when the index points to the middle.
+ */
+#define MAX_LOG_TAKE_PART 4
+static const char trunc_msg[] = "<truncated>";
+
+static u32 truncate_msg(u16 *text_len, u16 *trunc_msg_len,
+			u16 *dict_len, u32 *pad_len)
+{
+	/*
+	 * The message should not take the whole buffer. Otherwise, it might
+	 * get removed too soon.
+	 */
+	u32 max_text_len = log_buf_len / MAX_LOG_TAKE_PART;
+	if (*text_len > max_text_len)
+		*text_len = max_text_len;
+	/* enable the warning message */
+	*trunc_msg_len = strlen(trunc_msg);
+	/* disable the "dict" completely */
+	*dict_len = 0;
+	/* compute the size again, count also the warning message */
+	return msg_used_size(*text_len + *trunc_msg_len, 0, pad_len);
+}
+
 /* insert record into the buffer, discard old ones, update heads */
 static void log_store(int facility, int level,
 		      enum log_flags flags, u64 ts_nsec,
@@ -359,13 +385,19 @@ static void log_store(int facility, int level,
 {
 	struct printk_log *msg;
 	u32 size, pad_len;
+	u16 trunc_msg_len = 0;
 
 	/* number of '\0' padding bytes to next message */
 	size = msg_used_size(text_len, dict_len, &pad_len);
 
-	/* if message does not fit empty log buffer, ignore it */
-	if (log_make_free_space(size))
-		return;
+	if (log_make_free_space(size)) {
+		/* truncate the message if it is too long for empty buffer */
+		size = truncate_msg(&text_len, &trunc_msg_len,
+				    &dict_len, &pad_len);
+		/* survive when the log buffer is too small for trunc_msg */
+		if (log_make_free_space(size))
+			return;
+	}
 
 	if (log_next_idx + size + sizeof(struct printk_log) > log_buf_len) {
 		/*
@@ -381,6 +413,10 @@ static void log_store(int facility, int level,
 	msg = (struct printk_log *)(log_buf + log_next_idx);
 	memcpy(log_text(msg), text, text_len);
 	msg->text_len = text_len;
+	if (trunc_msg_len) {
+		memcpy(log_text(msg) + text_len, trunc_msg, trunc_msg_len);
+		msg->text_len += trunc_msg_len;
+	}
 	memcpy(log_dict(msg), dict, dict_len);
 	msg->dict_len = dict_len;
 	msg->facility = facility;