netdev - Re: [PATCH v4 net-next] fix unsafe set_memory

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Message-ID: <1381078592.12191.0.camel@edumazet-glaptop.roam.corp.google.com>
Date:	Sun, 06 Oct 2013 09:56:32 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexei Starovoitov <ast@...mgrid.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Daniel Borkmann <dborkman@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux-arm-kernel@...ts.infradead.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH v4 net-next] fix unsafe set_memory_rw from softirq

On Fri, 2013-10-04 at 00:14 -0700, Alexei Starovoitov wrote:
> on x86 system with net.core.bpf_jit_enable = 1

> cannot reuse jited filter memory, since it's readonly,
> so use original bpf insns memory to hold work_struct
> 
> defer kfree of sk_filter until jit completed freeing
> 
> tested on x86_64 and i386
> 
> Signed-off-by: Alexei Starovoitov <ast@...mgrid.com>

Acked-by: Eric Dumazet <edumazet@...gle.com>


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