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Message-Id: <20151015.233218.1351681066787454091.davem@davemloft.net>
Date: Thu, 15 Oct 2015 23:32:18 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: wuninsu@...il.com
Cc: ian.campbell@...rix.com, wei.liu2@...rix.com,
xen-devel@...ts.xenproject.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, taesoo@...ech.edu,
yeongjin.jang@...ech.edu, insu@...ech.edu
Subject: Re: [PATCH] xen-netback: corretly check failed allocation
From: Insu Yun <wuninsu@...il.com>
Date: Thu, 15 Oct 2015 12:26:16 -0400
> Since vzalloc can be failed in memory pressure,
> return value should be checked and return ENOMEM.
>
> Signed-off-by: Insu Yun <wuninsu@...il.com>
> ---
> drivers/net/xen-netback/xenbus.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
> index 929a6e7..e288246 100644
> --- a/drivers/net/xen-netback/xenbus.c
> +++ b/drivers/net/xen-netback/xenbus.c
> @@ -788,6 +788,11 @@ static void connect(struct backend_info *be)
> /* Use the number of queues requested by the frontend */
> be->vif->queues = vzalloc(requested_num_queues *
> sizeof(struct xenvif_queue));
> + if (!be->vif->queues) {
> + xenbus_dev_fatal(dev, -ENOMEM, "allocating queues");
> + return;
> + }
This is definitely not indented correctly.
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