netdev - Re: [PATCH net] mlxsw: Fix some IS

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Message-Id: <20200423.123459.1317092825451472203.davem@davemloft.net>
Date:   Thu, 23 Apr 2020 12:34:59 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     dan.carpenter@...cle.com
Cc:     jiri@...lanox.com, idosch@...lanox.com, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH net] mlxsw: Fix some IS_ERR() vs NULL bugs

From: Dan Carpenter <dan.carpenter@...cle.com>
Date: Wed, 22 Apr 2020 12:36:41 +0300

> The mlxsw_sp_acl_rulei_create() function is supposed to return an error
> pointer from mlxsw_afa_block_create().  The problem is that these
> functions both return NULL instead of error pointers.  Half the callers
> expect NULL and half expect error pointers so it could lead to a NULL
> dereference on failure.
> 
> This patch changes both of them to return error pointers and changes all
> the callers which checked for NULL to check for IS_ERR() instead.
> 
> Fixes: 4cda7d8d7098 ("mlxsw: core: Introduce flexible actions support")
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Applied, thanks.