netdev - Re: [PATCH net v2 1/2] vsock: Fix memory leak in vsock

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Message-ID: <20220808174536.GA19626@bytedance>
Date:   Mon, 8 Aug 2022 10:45:36 -0700
From:   Peilin Ye <yepeilin.cs@...il.com>
To:     Stefano Garzarella <sgarzare@...hat.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Peilin Ye <peilin.ye@...edance.com>,
        George Zhang <georgezhang@...are.com>,
        Dmitry Torokhov <dtor@...are.com>,
        Andy King <acking@...are.com>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v2 1/2] vsock: Fix memory leak in vsock_connect()

On Mon, Aug 08, 2022 at 09:55:33AM +0200, Stefano Garzarella wrote:
> On Sun, Aug 07, 2022 at 02:00:11AM -0700, Peilin Ye wrote:
> > net/vmw_vsock/af_vsock.c | 8 +++++++-
> > 1 file changed, 7 insertions(+), 1 deletion(-)
> > 
> > diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
> > index f04abf662ec6..fe14f6cbca22 100644
> > --- a/net/vmw_vsock/af_vsock.c
> > +++ b/net/vmw_vsock/af_vsock.c
> > @@ -1391,7 +1391,13 @@ static int vsock_connect(struct socket *sock, struct sockaddr *addr,
> > 			 * timeout fires.
> > 			 */
> > 			sock_hold(sk);
> > -			schedule_delayed_work(&vsk->connect_work, timeout);
> > +
> > +			/* If the timeout function is already scheduled,
> > +			 * reschedule it, then ungrab the socket refcount to
> > +			 * keep it balanced.
> > +			 */
> > +			if (mod_delayed_work(system_wq, &vsk->connect_work, timeout))
>                             ^
> Checkpatch warns here about line lenght.
> If you have to re-send, please split it.

Oh, net-next HEAD's checkpatch --strict didn't complain, I didn't know
Patchwork checks 80 columns.  I will send v3 soon.

> Anyway, the patch LGTM:
> 
> Reviewed-by: Stefano Garzarella <sgarzare@...hat.com>

Thanks!

Peilin Ye