I ran into an issue with modprobe ocfs2 causing kernel panic. This only happened when FIPS is enabled via fips=1 in kernel boot parameter.

The error message is
Kernel panic - not syncing: Module verification failed with error -126 in FIPS mode
Pid: 3388, comm: modproble Tainted: G X 3.0.76-0.11-default #1
Call Trace:
[<ffffffff81004945] dump_trace+0x75/0x310
[<ffffffff81459893] dump_stack+0x69/0x6f
[<ffffffff8145992c] panic+0x93/0x201
[<ffffffff8109c815] copy_and_check+0x185/0x190
[<ffffffff8109fb43] load_module+0x63/0x730
[<ffffffff810a0272] sys_init_module+0x62/0x240