linux-kernel - Re: [PATCH] RDS: verify the underlying transport exists before creating a connection

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Message-ID: <55E9FE1A.4080103@cogentembedded.com>
Date:	Fri, 4 Sep 2015 23:24:58 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Sasha Levin <sasha.levin@...cle.com>, chien.yen@...cle.com,
	davem@...emloft.net
Cc:	rds-devel@....oracle.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RDS: verify the underlying transport exists before
 creating a connection

Hello.

On 09/04/2015 07:43 PM, Sasha Levin wrote:

> There was no verification that an underlying transport exists when creating
> a connection, this would cause dereferencing a NULL ptr.
>
> Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
> ---
>   net/rds/connection.c |    6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/net/rds/connection.c b/net/rds/connection.c
> index a50e652..0218d81 100644
> --- a/net/rds/connection.c
> +++ b/net/rds/connection.c
> @@ -189,6 +189,12 @@ new_conn:
>   		}
>   	}
>
> +	if (trans == NULL) {

   Please use !trans instead, it's the form preferred by the networking code.

[...]

MBR, Sergei

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