netdev - Re: [PATCH net 1/1] cls_api.c: Fix dumping of non-existing actions' stats.

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Date:	Wed, 04 Feb 2015 20:26:39 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	ignacy.gawedzki@...en-communications.fr
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net 1/1] cls_api.c: Fix dumping of non-existing
 actions' stats.

From: Ignacy Gawędzki <ignacy.gawedzki@...en-communications.fr>
Date: Tue, 3 Feb 2015 18:32:51 +0100

> In tcf_exts_dump_stats(), ensure that exts->actions is not empty before
> accessing the first element of that list and calling tcf_action_copy_stats()
> on it.  This fixes some random segvs when adding filters of type "basic" with
> no particular action.
> 
> This also fixes the dumping of those "no-action" filters, which more often
> than not made calls to tcf_action_copy_stats() fail and consequently netlink
> attributes added by the caller to be removed by a call to nla_nest_cancel().
> 
> Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@...en-communications.fr>

Applied, thanks.
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