On 2020/12/1 00:39, Simon Horman wrote:
>On Mon, Nov 30, 2020 at 02:41:56PM +0800, qiuguorui1 wrote:
>> In function dtb_set_property, when malloc new_node fails,
>> we need to free new_dtb before return.
>>
>> Fixes: f56cbcf4c2766 ("kexec/dt-ops.c: Fix '/chosen' v/s 'chosen' node
>> being passed to fdt helper functions")
>> Signed-off-by: qiuguorui1 <[email protected]>
>> ---
>> kexec/dt-ops.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/kexec/dt-ops.c b/kexec/dt-ops.c
>> index dd2feaa..cc5feae 100644
>> --- a/kexec/dt-ops.c
>> +++ b/kexec/dt-ops.c
>> @@ -89,6 +89,7 @@ int dtb_set_property(char **dtb, off_t *dtb_size, const
>> char *node,
>> new_node = malloc(strlen("/") + strlen(node) + 1);
>> if (!new_node) {
>> dbgprintf("%s: malloc failed\n", __func__);
>> + free(new_dtb);
>
>Can we use the goto idiom here,
>as is used elsewhere in this function?
Sure! Thanks for your advice,I will send a v2 patch soon.
>> return -ENOMEM;
>> }
>>
>> --
>> 2.12.3
-----邮件原件-----
发件人: Simon Horman [mailto:[email protected]]
发送时间: 2020年12月1日 0:39
收件人: qiuguorui <[email protected]>
抄送: [email protected]; [email protected]; Liyou (leeyou, RTOS)
<[email protected]>; Zengweilin <[email protected]>
主题: Re: [PATCH] dt-ops: fix memory leak when new_node malloc fails
On Mon, Nov 30, 2020 at 02:41:56PM +0800, qiuguorui1 wrote:
> In function dtb_set_property, when malloc new_node fails,
> we need to free new_dtb before return.
>
> Fixes: f56cbcf4c2766 ("kexec/dt-ops.c: Fix '/chosen' v/s 'chosen' node
> being passed to fdt helper functions")
> Signed-off-by: qiuguorui1 <[email protected]>
> ---
> kexec/dt-ops.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/kexec/dt-ops.c b/kexec/dt-ops.c
> index dd2feaa..cc5feae 100644
> --- a/kexec/dt-ops.c
> +++ b/kexec/dt-ops.c
> @@ -89,6 +89,7 @@ int dtb_set_property(char **dtb, off_t *dtb_size, const
> char *node,
> new_node = malloc(strlen("/") + strlen(node) + 1);
> if (!new_node) {
> dbgprintf("%s: malloc failed\n", __func__);
> + free(new_dtb);
Can we use the goto idiom here,
as is used elsewhere in this function?
> return -ENOMEM;
> }
>
> --
> 2.12.3
>
>
> _______________________________________________
> kexec mailing list
> [email protected]
> http://lists.infradead.org/mailman/listinfo/kexec
>
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