[PATCH AUTOSEL 4.19 191/237] sock_diag: fix autoloading of the raw_diag module

[Sasha Levin]

From: Andrei Vagin <avagin@xxxxxxxxx>

[ Upstream commit c34c1287778b080ed692c0a46a8e345206cc29e6 ]

IPPROTO_RAW isn't registred as an inet protocol, so
inet_protos[protocol] is always NULL for it.

Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
Cc: Xin Long <lucien.xin@xxxxxxxxx>
Fixes: bf2ae2e4bf93 ("sock_diag: request _diag module only when the family or proto has been registered")
Signed-off-by: Andrei Vagin <avagin@xxxxxxxxx>
Reviewed-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/core/sock.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/sock.c b/net/core/sock.c
index 6c11078217769..ba4f843cdd1d1 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -3347,6 +3347,7 @@ int sock_load_diag_module(int family, int protocol)
 
 #ifdef CONFIG_INET
 	if (family == AF_INET &&
+	    protocol != IPPROTO_RAW &&
 	    !rcu_access_pointer(inet_protos[protocol]))
 		return -ENOENT;
 #endif
-- 
2.20.1