| From d1f37226431f5d9657aa144a40f2383adbcf27e1 Mon Sep 17 00:00:00 2001 |
| From: Cong Wang <xiyou.wangcong@gmail.com> |
| Date: Thu, 26 Dec 2019 22:32:04 -0800 |
| Subject: dma-buf: free dmabuf->name in dma_buf_release() |
| |
| 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; |
| } |