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Re: [Qemu-devel] [PATCH] input: free InputEvent when it can't be inserte


From: Tian Dianchen
Subject: Re: [Qemu-devel] [PATCH] input: free InputEvent when it can't be inserted into a full kdb queue
Date: Thu, 7 Dec 2017 10:38:08 +0800

Hi, Marc-André Lureau
Thank you for your comments.

Hi,Gerd Hoffmann,
If there is no other comments,please join this note when merge this patch .


2017-12-06 17:46 GMT+08:00 Marc-André Lureau <address@hidden>:

> Hi
>
> On Wed, Dec 6, 2017 at 3:29 AM, 田殿臣 <address@hidden> wrote:
> > From e8c03f405c2112428e79bb82064c7b7743d0cc86 Mon Sep 17 00:00:00 2001
> > From: Tian Dianchen <address@hidden>
> > Date: Tue, 5 Dec 2017 14:03:53 +0800
> > Subject: [PATCH] input: free InputEvent when it can't be inserted into a
> > full
> >  kdb queue
> >
> > When the kdb queue is full, the evt can't be placed in it, so it should
> > be released to free the memory.
> >
> > Impact: Without this limit vnc clients can exhaust host memory by keep
> > sending keyboard events when kdb queue is full.
>
> You may add "Leak introduced in commit fa18f36a461984eae50ab957e47ec7
> 8dae3c14fc"
>
> >
> > Reviewed-by: Zhang Chao <address@hidden>
> > Reviewed-by: Quan Xu <address@hidden>
> > Signed-off-by: Tian Dianchen <address@hidden>
>
> Reviewed-by: Marc-André Lureau <address@hidden>
>
>
> > ---
> >  ui/input.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/ui/input.c b/ui/input.c
> > index 3e2d324..e5b78aa 100644
> > --- a/ui/input.c
> > +++ b/ui/input.c
> > @@ -421,6 +421,8 @@ void qemu_input_event_send_key(QemuConsole *src,
> > KeyValue *key, bool down)
> >      } else if (queue_count < queue_limit) {
> >          qemu_input_queue_event(&kbd_queue, src, evt);
> >          qemu_input_queue_sync(&kbd_queue);
> > +    } else {
> > +        qapi_free_InputEvent(evt);
> >      }
> >  }
> >
> > --
> > 1.8.3.1
>
>
>
> --
> Marc-André Lureau
>


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