* [Qemu-devel] [PATCH] serial: fix memory leak in serial exit
@ 2017-01-04 8:43 Li Qiang
2017-01-04 11:43 ` Paolo Bonzini
0 siblings, 1 reply; 4+ messages in thread
From: Li Qiang @ 2017-01-04 8:43 UTC (permalink / raw)
To: mst, pbonzini, qemu-devel; +Cc: Li Qiang
From: Li Qiang <liqiang6-s@360.cn>
The serial_exit_core function doesn't free some resources.
This can lead memory leak when hotplug and unplug. This
patch avoid this.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
---
hw/char/serial.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/hw/char/serial.c b/hw/char/serial.c
index ffbacd8..67b18ed 100644
--- a/hw/char/serial.c
+++ b/hw/char/serial.c
@@ -906,6 +906,16 @@ void serial_realize_core(SerialState *s, Error **errp)
void serial_exit_core(SerialState *s)
{
qemu_chr_fe_deinit(&s->chr);
+
+ timer_del(s->modem_status_poll);
+ timer_free(s->modem_status_poll);
+
+ timer_del(s->fifo_timeout_timer);
+ timer_free(s->fifo_timeout_timer);
+
+ fifo8_destroy(&s->recv_fifo);
+ fifo8_destroy(&s->xmit_fifo);
+
qemu_unregister_reset(serial_reset, s);
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] serial: fix memory leak in serial exit
2017-01-04 8:43 [Qemu-devel] [PATCH] serial: fix memory leak in serial exit Li Qiang
@ 2017-01-04 11:43 ` Paolo Bonzini
2017-01-04 13:24 ` Michael S. Tsirkin
0 siblings, 1 reply; 4+ messages in thread
From: Paolo Bonzini @ 2017-01-04 11:43 UTC (permalink / raw)
To: Li Qiang, mst, qemu-devel; +Cc: Li Qiang
On 04/01/2017 09:43, Li Qiang wrote:
> From: Li Qiang <liqiang6-s@360.cn>
>
> The serial_exit_core function doesn't free some resources.
> This can lead memory leak when hotplug and unplug. This
> patch avoid this.
>
> Signed-off-by: Li Qiang <liqiang6-s@360.cn>
> ---
> hw/char/serial.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/hw/char/serial.c b/hw/char/serial.c
> index ffbacd8..67b18ed 100644
> --- a/hw/char/serial.c
> +++ b/hw/char/serial.c
> @@ -906,6 +906,16 @@ void serial_realize_core(SerialState *s, Error **errp)
> void serial_exit_core(SerialState *s)
> {
> qemu_chr_fe_deinit(&s->chr);
> +
> + timer_del(s->modem_status_poll);
> + timer_free(s->modem_status_poll);
> +
> + timer_del(s->fifo_timeout_timer);
> + timer_free(s->fifo_timeout_timer);
> +
> + fifo8_destroy(&s->recv_fifo);
> + fifo8_destroy(&s->xmit_fifo);
> +
> qemu_unregister_reset(serial_reset, s);
> }
>
>
Thanks, looks good.
Paolo
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] serial: fix memory leak in serial exit
2017-01-04 11:43 ` Paolo Bonzini
@ 2017-01-04 13:24 ` Michael S. Tsirkin
2017-01-05 10:17 ` Paolo Bonzini
0 siblings, 1 reply; 4+ messages in thread
From: Michael S. Tsirkin @ 2017-01-04 13:24 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: Li Qiang, qemu-devel, Li Qiang
On Wed, Jan 04, 2017 at 12:43:35PM +0100, Paolo Bonzini wrote:
>
>
> On 04/01/2017 09:43, Li Qiang wrote:
> > From: Li Qiang <liqiang6-s@360.cn>
> >
> > The serial_exit_core function doesn't free some resources.
> > This can lead memory leak when hotplug and unplug. This
> > patch avoid this.
> >
> > Signed-off-by: Li Qiang <liqiang6-s@360.cn>
> > ---
> > hw/char/serial.c | 10 ++++++++++
> > 1 file changed, 10 insertions(+)
> >
> > diff --git a/hw/char/serial.c b/hw/char/serial.c
> > index ffbacd8..67b18ed 100644
> > --- a/hw/char/serial.c
> > +++ b/hw/char/serial.c
> > @@ -906,6 +906,16 @@ void serial_realize_core(SerialState *s, Error **errp)
> > void serial_exit_core(SerialState *s)
> > {
> > qemu_chr_fe_deinit(&s->chr);
> > +
> > + timer_del(s->modem_status_poll);
> > + timer_free(s->modem_status_poll);
> > +
> > + timer_del(s->fifo_timeout_timer);
> > + timer_free(s->fifo_timeout_timer);
> > +
> > + fifo8_destroy(&s->recv_fifo);
> > + fifo8_destroy(&s->xmit_fifo);
> > +
> > qemu_unregister_reset(serial_reset, s);
> > }
> >
> >
>
> Thanks, looks good.
>
> Paolo
Paolo, so are you merging this?
Acked-by: Michael S. Tsirkin <mst@redhat.com>
--
MST
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] serial: fix memory leak in serial exit
2017-01-04 13:24 ` Michael S. Tsirkin
@ 2017-01-05 10:17 ` Paolo Bonzini
0 siblings, 0 replies; 4+ messages in thread
From: Paolo Bonzini @ 2017-01-05 10:17 UTC (permalink / raw)
To: Michael S. Tsirkin; +Cc: Li Qiang, qemu-devel, Li Qiang
On 04/01/2017 14:24, Michael S. Tsirkin wrote:
> On Wed, Jan 04, 2017 at 12:43:35PM +0100, Paolo Bonzini wrote:
>>
>>
>> On 04/01/2017 09:43, Li Qiang wrote:
>>> From: Li Qiang <liqiang6-s@360.cn>
>>>
>>> The serial_exit_core function doesn't free some resources.
>>> This can lead memory leak when hotplug and unplug. This
>>> patch avoid this.
>>>
>>> Signed-off-by: Li Qiang <liqiang6-s@360.cn>
>>> ---
>>> hw/char/serial.c | 10 ++++++++++
>>> 1 file changed, 10 insertions(+)
>>>
>>> diff --git a/hw/char/serial.c b/hw/char/serial.c
>>> index ffbacd8..67b18ed 100644
>>> --- a/hw/char/serial.c
>>> +++ b/hw/char/serial.c
>>> @@ -906,6 +906,16 @@ void serial_realize_core(SerialState *s, Error **errp)
>>> void serial_exit_core(SerialState *s)
>>> {
>>> qemu_chr_fe_deinit(&s->chr);
>>> +
>>> + timer_del(s->modem_status_poll);
>>> + timer_free(s->modem_status_poll);
>>> +
>>> + timer_del(s->fifo_timeout_timer);
>>> + timer_free(s->fifo_timeout_timer);
>>> +
>>> + fifo8_destroy(&s->recv_fifo);
>>> + fifo8_destroy(&s->xmit_fifo);
>>> +
>>> qemu_unregister_reset(serial_reset, s);
>>> }
>>>
>>>
>>
>> Thanks, looks good.
>>
>> Paolo
>
>
> Paolo, so are you merging this?
>
> Acked-by: Michael S. Tsirkin <mst@redhat.com>
Yes, thanks.
Paolo
^ permalink raw reply [flat|nested] 4+ messages in thread
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2017-01-04 8:43 [Qemu-devel] [PATCH] serial: fix memory leak in serial exit Li Qiang
2017-01-04 11:43 ` Paolo Bonzini
2017-01-04 13:24 ` Michael S. Tsirkin
2017-01-05 10:17 ` Paolo Bonzini
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