From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Yuchung Cheng , Eric Dumazet , Neal Cardwell , "David S. Miller" Subject: [PATCH 4.3 47/55] inet: tcp: fix inetpeer_set_addr_v4() Date: Wed, 20 Jan 2016 16:44:22 -0800 Message-Id: <20160120232229.832179184@linuxfoundation.org> In-Reply-To: <20160120232227.417513468@linuxfoundation.org> References: <20160120232227.417513468@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eric Dumazet [ Upstream commit 887dc9f2cef6e98dcccf807da5e6faf4f60ba483 ] David Ahern added a vif field in the a4 part of inetpeer_addr struct. This broke IPv4 TCP fast open client side and more generally tcp metrics cache, because inetpeer_addr_cmp() is now comparing two u32 instead of one. inetpeer_set_addr_v4() needs to properly init vif field, otherwise the comparison result depends on uninitialized data. Fixes: 192132b9a034 ("net: Add support for VRFs to inetpeer cache") Reported-by: Yuchung Cheng Signed-off-by: Eric Dumazet Cc: Neal Cardwell Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- include/net/inetpeer.h | 1 + 1 file changed, 1 insertion(+) --- a/include/net/inetpeer.h +++ b/include/net/inetpeer.h @@ -78,6 +78,7 @@ void inet_initpeers(void) __init; static inline void inetpeer_set_addr_v4(struct inetpeer_addr *iaddr, __be32 ip) { iaddr->a4.addr = ip; + iaddr->a4.vif = 0; iaddr->family = AF_INET; }