--- /dev/null
+From b1286ed7158e9b62787508066283ab0b8850b518 Mon Sep 17 00:00:00 2001
+From: Linus Torvalds <torvalds@linux-foundation.org>
+Date: Fri, 30 Nov 2018 12:13:15 -0800
+Subject: test_hexdump: use memcpy instead of strncpy
+
+From: Linus Torvalds <torvalds@linux-foundation.org>
+
+commit b1286ed7158e9b62787508066283ab0b8850b518 upstream.
+
+New versions of gcc reasonably warn about the odd pattern of
+
+ strncpy(p, q, strlen(q));
+
+which really doesn't make sense: the strncpy() ends up being just a slow
+and odd way to write memcpy() in this case.
+
+Apparently there was a patch for this floating around earlier, but it
+got lost.
+
+Acked-again-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ lib/test_hexdump.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/lib/test_hexdump.c
++++ b/lib/test_hexdump.c
+@@ -99,7 +99,7 @@ static void __init test_hexdump_prepare_
+ const char *q = *result++;
+ size_t amount = strlen(q);
+
+- strncpy(p, q, amount);
++ memcpy(p, q, amount);
+ p += amount;
+
+ *p++ = ' ';