From: Aditya Pakki <pakki001@xxxxxxx>
[ Upstream commit 0eb987c874dc93f9c9d85a6465dbde20fdd3884c ]
In net_ns_init(), register_pernet_subsys() could fail while registering
network namespace subsystems. The fix checks the return value and
sends a panic() on failure.
Signed-off-by: Aditya Pakki <pakki001@xxxxxxx>
Reviewed-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/core/net_namespace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 6dab186d4b8f6..c60123dff8039 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -913,7 +913,8 @@ static int __init net_ns_init(void)
init_net_initialized = true;
up_write(&pernet_ops_rwsem);
- register_pernet_subsys(&net_ns_ops);
+ if (register_pernet_subsys(&net_ns_ops))
+ panic("Could not register network namespace subsystems");
rtnl_register(PF_UNSPEC, RTM_NEWNSID, rtnl_net_newid, NULL,
RTNL_FLAG_DOIT_UNLOCKED);
--
2.20.1
