linux-kernel - Re: [PATCH] vhost/test: fix memory leak of vhost virtqueues

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Message-ID: <8a7f84b6-8d63-0005-754b-cfd158c8952e@linux.alibaba.com>
Date:   Tue, 4 Jan 2022 13:58:47 +0800
From:   Xianting Tian <xianting.tian@...ux.alibaba.com>
To:     mst@...hat.com, jasowang@...hat.com
Cc:     kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vhost/test: fix memory leak of vhost virtqueues

hi

Could I get your comments for this patch?  it fixed the memleak issue.

在 2021/12/28 上午11:09, Xianting Tian 写道:
> We need free the vqs in .release(), which are allocated in .open().
>
> Signed-off-by: Xianting Tian <xianting.tian@...ux.alibaba.com>
> ---
>   drivers/vhost/test.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
> index a09dedc79..05740cba1 100644
> --- a/drivers/vhost/test.c
> +++ b/drivers/vhost/test.c
> @@ -166,6 +166,7 @@ static int vhost_test_release(struct inode *inode, struct file *f)
>   	/* We do an extra flush before freeing memory,
>   	 * since jobs can re-queue themselves. */
>   	vhost_test_flush(n);
> +	kfree(n->dev.vqs);
>   	kfree(n);
>   	return 0;
>   }