netdev - [PATCH] xfrm4: Remove export declaration from xfrm4_protocol

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Date:   Sat, 16 Jun 2018 23:58:40 +0300
From:   efremov@...ux.com
To:     Steffen Klassert <steffen.klassert@...unet.com>
Cc:     Denis Efremov <efremov@...ux.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: [PATCH] xfrm4: Remove export declaration from xfrm4_protocol_init

From: Denis Efremov <efremov@...ux.com>

The function xfrm4_protocol_init is exported as GPL symbol and
annotated as __init. That is reasonable only in the case when
this function is called from another's module __init section.
Otherwise, we will face section mismatch error. xfrm4_protocol_init
is used in xfrm4_init along with xfrm4_state_init and xfrm4_policy_init.
The last two functions are not exported as GPL symbols. According to
this, it seem's like there is no reason to export xfrm4_protocol_init too.
Fix potential section mismatch by removing export declaration
from xfrm4_protocol_init.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Denis Efremov <efremov@...ux.com>
---
 net/ipv4/xfrm4_protocol.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/ipv4/xfrm4_protocol.c b/net/ipv4/xfrm4_protocol.c
index 8dd0e6ab8606..0e1f5dc2766b 100644
--- a/net/ipv4/xfrm4_protocol.c
+++ b/net/ipv4/xfrm4_protocol.c
@@ -297,4 +297,3 @@ void __init xfrm4_protocol_init(void)
 {
 	xfrm_input_register_afinfo(&xfrm4_input_afinfo);
 }
-EXPORT_SYMBOL(xfrm4_protocol_init);
-- 
2.17.1