Re: [Qemu-devel] [PATCH] iothread: fix epollfd leak in the process of delIOThread

[Fam Zheng <famz@redhat.com>]

On Tue, 05/15 20:00, Jie Wang wrote:
> When we call addIOThread, the epollfd created in aio_context_setup,
> but not close it in the process of delIOThread, so the epollfd will leak.
> 
> Signed-off-by: Jie Wang <wangjie88@huawei.com>
> ---
>  iothread.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/iothread.c b/iothread.c
> index aff1281..23ac0a8 100644
> --- a/iothread.c
> +++ b/iothread.c
> @@ -128,6 +128,7 @@ static void iothread_instance_finalize(Object *obj)
>       * GSources first before destroying any GMainContext.
>       */
>      if (iothread->ctx) {
> +        close(iothread->ctx->epollfd);
>          aio_context_unref(iothread->ctx);
>          iothread->ctx = NULL;
>      }
> -- 
> 1.8.3.1
> 

Please add an aio_context_destroy() function in aio-posix.c and call it from
aio_context_finalize(). IOThread code should not touch AioContext internals.
Also please remember to wrap the close() code in CONFIG_EPOLL_CREATE1.  An empty
function may need to be added to aio-win32.c, too.

Fam