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    Subject[PATCH 5.4 160/168] dma-buf: free dmabuf->name in dma_buf_release()
    Date
    From: Cong Wang <xiyou.wangcong@gmail.com>

    commit d1f37226431f5d9657aa144a40f2383adbcf27e1 upstream.

    dma-buf 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>
    Acked-by: Chenbo Feng <fengc@google.com>
    Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
    Link: https://patchwork.freedesktop.org/patch/msgid/20191227063204.5813-1-xiyou.wangcong@gmail.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/dma-buf/dma-buf.c | 1 +
    1 file changed, 1 insertion(+)

    --- 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
    dma_resv_fini(dmabuf->resv);

    module_put(dmabuf->owner);
    + kfree(dmabuf->name);
    kfree(dmabuf);
    return 0;
    }

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