linux-kernel - [PATCH] lib: Use kzalloc() instead of kmalloc() with flag GFP

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Date:   Mon, 23 Dec 2019 09:49:34 +0800
From:   Yi Wang <wang.yi59@....com.cn>
To:     aryabinin@...tuozzo.com
Cc:     glider@...gle.com, dvyukov@...gle.com, kasan-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, xue.zhihong@....com.cn,
        wang.yi59@....com.cn, up2wing@...il.com, wang.liang82@....com.cn,
        Huang Zijiang <huang.zijiang@....com.cn>
Subject: [PATCH] lib: Use kzalloc() instead of kmalloc() with flag GFP_ZERO.

From: Huang Zijiang <huang.zijiang@....com.cn>

Use kzalloc instead of manually setting kmalloc
with flag GFP_ZERO since kzalloc sets allocated memory
to zero.

Signed-off-by: Huang Zijiang <huang.zijiang@....com.cn>
Signed-off-by: Yi Wang <wang.yi59@....com.cn>
---
 lib/test_kasan.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 05686c8..ff5d21e 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -598,7 +598,7 @@ static noinline void __init kasan_memchr(void)
     size_t size = 24;
 
     pr_info("out-of-bounds in memchr\n");
-    ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
+ptr = kzalloc(size, GFP_KERNEL);
     if (!ptr)
         return;
 
@@ -613,7 +613,7 @@ static noinline void __init kasan_memcmp(void)
     int arr[9];
 
     pr_info("out-of-bounds in memcmp\n");
-    ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
+ptr = kzalloc(size, GFP_KERNEL);
     if (!ptr)
         return;
 
@@ -628,7 +628,7 @@ static noinline void __init kasan_strings(void)
     size_t size = 24;
 
     pr_info("use-after-free in strchr\n");
-    ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO);
+ptr = kzalloc(size, GFP_KERNEL);
     if (!ptr)
         return;

-- 
1.9.1