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

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Message-Id: <20211228030924.3468439-1-xianting.tian@linux.alibaba.com>
Date:   Tue, 28 Dec 2021 11:09:24 +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,
        Xianting Tian <xianting.tian@...ux.alibaba.com>
Subject: [PATCH] vhost/test: fix memory leak of vhost virtqueues

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;
 }
-- 
2.17.1