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From:   Cong Wang <xiyou.wangcong@gmail.com>
To:     dri-devel@lists.freedesktop.org
Cc:     linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
        Cong Wang <xiyou.wangcong@gmail.com>,
        syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com,
        Greg Hackmann <ghackmann@google.com>,
        Chenbo Feng <fengc@google.com>,
        Sumit Semwal <sumit.semwal@linaro.org>
Subject: [PATCH] dma-buf: free dmabuf->name in dma_buf_release()
Date:   Thu, 26 Dec 2019 22:32:04 -0800
Message-Id: <20191227063204.5813-1-xiyou.wangcong@gmail.com>
MIME-Version: 1.0
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Sender: linux-kernel-owner@vger.kernel.org
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dma-buff name can be set via DMA_BUF_SET_NAME ioctl, but once set
it never gets freed.

Free it in dma_buf_release().

Fixes: bb2bb9030425 ("dma-buf: add DMA_BUF_SET_NAME ioctls")
Reported-by: syzbot+b2098bc44728a4efb3e9@syzkaller.appspotmail.com
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Chenbo Feng <fengc@google.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
---
 drivers/dma-buf/dma-buf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index ce41cd9b758a..2427398ff22a 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -108,6 +108,7 @@ static int dma_buf_release(struct inode *inode, struct file *file)
 		dma_resv_fini(dmabuf->resv);
 
 	module_put(dmabuf->owner);
+	kfree(dmabuf->name);
 	kfree(dmabuf);
 	return 0;
 }
-- 
2.21.0