From: Aditya Pakki pakki001@umn.edu
[ 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@umn.edu Reviewed-by: Kirill Tkhai ktkhai@virtuozzo.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- 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);