On 24.12.2018 04:42, Aditya Pakki wrote:
> 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 <pakki...@umn.edu>
Reviewed-by: Kirill Tkhai <ktk...@virtuozzo.com>
> ---
> 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 fefe72774aeb..af8849a7a9c3 100644
> --- a/net/core/net_namespace.c
> +++ b/net/core/net_namespace.c
> @@ -917,7 +917,8 @@ 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);
>
