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.wa... 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; }