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From:   Sven Eckelmann <sven@narfation.org>
To:     Marek Lindner <mareklindner@neomailbox.ch>,
        Simon Wunderlich <sw@simonwunderlich.de>,
        Antonio Quartulli <a@unstable.cc>,
        Remi Pommarel <repk@triplefau.lt>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        b.a.t.m.a.n@lists.open-mesh.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Remi Pommarel <repk@triplefau.lt>
Subject: Re: [PATCH net] batman-adv: Do not get eth header before
 batadv_check_management_packet
Date:   Fri, 28 Jul 2023 15:49:46 +0200
Message-ID: <10396914.nUPlyArG6x@sven-l14>
In-Reply-To: <20230728133850.5974-1-repk@triplefau.lt>
References: <20230728133850.5974-1-repk@triplefau.lt>
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From: Sven Eckelmann <sven@narfation.org>
Date: Fri, 28 Jul 2023 15:49:46 +0200
Message-ID: <10396914.nUPlyArG6x@sven-l14>
In-Reply-To: <20230728133850.5974-1-repk@triplefau.lt>
References: <20230728133850.5974-1-repk@triplefau.lt>
MIME-Version: 1.0

On Fri, 28 Jul 2023 15:38:50 +0200, Remi Pommarel wrote:
> If received skb in batadv_v_elp_packet_recv or batadv_v_ogm_packet_recv
> is either cloned or non linearized then its data buffer will be
> reallocated by batadv_check_management_packet when skb_cow or
> skb_linearize get called. Thus geting ethernet header address inside
> skb data buffer before batadv_check_management_packet had any chance to
> reallocate it could lead to the following kernel panic:
> 
> [...]

Applied, thanks!

[1/1] batman-adv: Do not get eth header before batadv_check_management_packet
      commit: eac27a41ab641de074655d2932fc7f8cdb446881

Kind regards,
	Sven

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