From: Mahesh Bandewar
Date: Tue, 2 Jul 2019 23:16:31 -0700
> dev_init_scheduler() and dev_activate() expect the caller to
> hold RTNL. Since we don't want blackhole device to be initialized
> per ns, we are initializing at init.
>
> [3.855027] Call Trace:
> [3.855034] dump_stack+0x67/0
dev_init_scheduler() and dev_activate() expect the caller to
hold RTNL. Since we don't want blackhole device to be initialized
per ns, we are initializing at init.
[3.855027] Call Trace:
[3.855034] dump_stack+0x67/0x95
[3.855037] lockdep_rcu_suspicious+0xd5/0x110
[3.855044] dev_
