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Message-Id: <20210523204958.64575-1-xypron.glpk@gmx.de>
Date: Sun, 23 May 2021 22:49:57 +0200
From: Heinrich Schuchardt <xypron.glpk@....de>
To: linux-kernel@...r.kernel.org
Cc: Heinrich Schuchardt <xypron.glpk@....de>
Subject: [PATCH 1/1] include/linux/byteorder/generic.h: fix index variables
In cpu_to_be32_array() and be32_to_cpu_array() the length of the array is
given by variable len of type size_t. An index variable of type int is used
to iterate over the array. This is bound to fail for len > INT_MAX and
lets GCC add instructions for sign extension.
Correct the type of the index variable.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
---
include/linux/byteorder/generic.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index 4b13e0a3e15b..c9a4c96c9943 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -190,7 +190,7 @@ static inline void be64_add_cpu(__be64 *var, u64 val)
static inline void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len)
{
- int i;
+ size_t i;
for (i = 0; i < len; i++)
dst[i] = cpu_to_be32(src[i]);
@@ -198,7 +198,7 @@ static inline void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len)
static inline void be32_to_cpu_array(u32 *dst, const __be32 *src, size_t len)
{
- int i;
+ size_t i;
for (i = 0; i < len; i++)
dst[i] = be32_to_cpu(src[i]);
--
2.30.2
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