From: Alexei Starovoitov <ast@plumgrid.com>
Date: Wed, 7 Oct 2015 03:46:07 +0000 (-0700)
Subject: bpf: clear sender_cpu before xmit
X-Git-Tag: v4.2.5~39
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ead98c6d585f756740c4a545c91517c0ef7984f;p=thirdparty%2Fkernel%2Fstable.git

bpf: clear sender_cpu before xmit

[ Upstream commit 6bf0577374cfb6c2301dbf4934a4f23ad3d72763 ]

Similar to commit c29390c6dfee ("xps: must clear sender_cpu before forwarding")
the skb->sender_cpu needs to be cleared before xmit.

Fixes: 3896d655f4d4 ("bpf: introduce bpf_clone_redirect() helper")
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/core/filter.c b/net/core/filter.c
index 4c74ae993a47f..8dcdd86b68dd7 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1412,6 +1412,7 @@ static u64 bpf_clone_redirect(u64 r1, u64 ifindex, u64 flags, u64 r4, u64 r5)
 		return dev_forward_skb(dev, skb2);
 
 	skb2->dev = dev;
+	skb_sender_cpu_clear(skb2);
 	return dev_queue_xmit(skb2);
 }