From 1a58be6277e4324c853babfd35890c2d5e171e8f Mon Sep 17 00:00:00 2001
From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Wed, 30 Jun 2021 18:56:01 -0700
Subject: [PATCH] lib: memscan() fixlet

Generic version doesn't trucate second argument to char.

Older brother memchr() does as do s390, sparc and i386 assembly versions.

Fortunately, no code passes c >= 256.

Link: https://lkml.kernel.org/r/YLv4cCf0t5UPdyK+@localhost.localdomain
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 lib/string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/string.c b/lib/string.c
index 7548eb7..77bd0b1 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -977,7 +977,7 @@ void *memscan(void *addr, int c, size_t size)
 	unsigned char *p = addr;
 
 	while (size) {
-		if (*p == c)
+		if (*p == (unsigned char)c)
 			return (void *)p;
 		p++;
 		size--;
-- 
2.7.4