Klever

The heuristic which perform invocation immediately after registration should respect lock context.
The callback of the registered structure should not be called under locks acquired just before registration function.

For example:
http://ldvstore:8998/reports/unsafe/699969/
The function ib_umad_compat_ioctl->ib_umad_reg_agent
1. Acquires mutex_lock file->mutex
2. Calls registration ldv_ib_register_mad_agent_26->ldv_dispatch_register_5_1
3. Immediately calls ldv_control_function_4 (callbacks of different structure)
which in turn calls
3a. ib_umad_add_one->ib_umad_kill_port which aquires file->mutex