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Re: [PATCH 1/4] Drivers: hv: utils: fix memory leak on on_msg() failure

From Dan Carpenter <dan.carpenter@oracle.com>
Newsgroups linux.kernel
Subject Re: [PATCH 1/4] Drivers: hv: utils: fix memory leak on on_msg() failure
Date 2015-11-16 17:00 +0100
Message-ID <qvumf-M6-33@gated-at.bofh.it> (permalink)
References <qtYop-8hK-5@gated-at.bofh.it> <qtYoq-8hK-21@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Nov 12, 2015 at 12:32:13PM +0100, Vitaly Kuznetsov wrote:
> @@ -85,10 +86,10 @@ static ssize_t hvt_op_write(struct file *file, const char __user *buf,
>  		return PTR_ERR(inmsg);
>  
>  	if (hvt->on_msg(inmsg, count))
> -		return -EFAULT;
> +		ret = -EFAULT;

You fix this leak and then re-introduce it again directly in patch 3/4.
Also it might be nice to preserve the error code.

	ret = hvt->on_msg(inmsg, count);

	kfree(inmsg);

	return ret ? ret : count;

regards,
dan carpenter
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Thread

[PATCH 1/4] Drivers: hv: utils: fix memory leak on on_msg() failure Vitaly Kuznetsov <vkuznets@redhat.com> - 2015-11-12 12:40 +0100
  Re: [PATCH 1/4] Drivers: hv: utils: fix memory leak on on_msg()  failure Dan Carpenter <dan.carpenter@oracle.com> - 2015-11-16 17:00 +0100
    Re: [PATCH 1/4] Drivers: hv: utils: fix memory leak on on_msg() failure Vitaly Kuznetsov <vkuznets@redhat.com> - 2015-11-16 18:50 +0100

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