diff mbox series

[2/2] unicode: mkutf8data: Add malloc allocation check

Message ID 20221024045150.177521-1-kunyu@nfschina.com
State New
Headers
Series [1/2] unicode: mkutf8data: Add compound malloc function |

Commit Message

Li kunyu Oct. 24, 2022, 4:51 a.m. UTC 
  Increase the judgment of malloc allocation, and return NULL if the
condition is met.

Signed-off-by: Li kunyu <kunyu@nfschina.com>
---
 fs/unicode/mkutf8data.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Bagas Sanjaya Oct. 24, 2022, 7:59 a.m. UTC | #1 
On Mon, Oct 24, 2022 at 12:51:50PM +0800, Li kunyu wrote:
> Increase the judgment of malloc allocation, and return NULL if the
> condition is met.
> 
> Signed-off-by: Li kunyu <kunyu@nfschina.com>
> ---
>  fs/unicode/mkutf8data.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/fs/unicode/mkutf8data.c b/fs/unicode/mkutf8data.c
> index e06404a6b106..a929ddf1438c 100644
> --- a/fs/unicode/mkutf8data.c
> +++ b/fs/unicode/mkutf8data.c
> @@ -495,6 +495,9 @@ static struct node *alloc_node(struct node *parent)
>  	int bitnum;
>  
>  	node = malloc(sizeof(*node));
> +	if (!node)
> +		return NULL;
> +
>  	node->left = node->right = NULL;
>  	node->parent = parent;
>  	node->leftnode = NODE;

What?

This is not "malloc judgement", but rather return NULL if node fails to
allocate.

Please, please reword the patch description.

Thanks.
diff mbox series

Patch

diff --git a/fs/unicode/mkutf8data.c b/fs/unicode/mkutf8data.c
index e06404a6b106..a929ddf1438c 100644
--- a/fs/unicode/mkutf8data.c
+++ b/fs/unicode/mkutf8data.c
@@ -495,6 +495,9 @@  static struct node *alloc_node(struct node *parent)
 	int bitnum;
 
 	node = malloc(sizeof(*node));
+	if (!node)
+		return NULL;
+
 	node->left = node->right = NULL;
 	node->parent = parent;
 	node->leftnode = NODE;