dattobd module causes kernel panic during boot process

Issue

• Observing kernel panic during the boot process.
• Below messages being displayed prior to kernel panic.

datto: failed to locate system call table, persistence disabled

• Backtrace looks like following snippet.

dracut: inactive '/dev/vg_nordcsxedb01/tempdumplv' [200.00 GiB] inherit
datto: failed to locate system call table, persistence disabled
dattobd: root block device = /dev/mapper/vg_nordcsxedb01-lv_root
dattobd: mounting /dev/mapper/vg_nordcsxedb01-lv_root as ext4

WARNING: at fs/namespace.c:679 mntput_no_expire+0x109/0x110() (Not tainted)
Hardware name: PowerEdge R920
Modules linked in: ext4 jbd2 mbcache dattobd(U) usb_storage sd_mod crc_t10dif ahci megaraid_sas wmi dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]
Pid: 3211, comm: dbdctl Not tainted 2.6.32-642.el6.x86_64 #1
Call Trace:
 [<ffffffff8107c911>] ? warn_slowpath_common+0x91/0xe0
 [<ffffffff8107c97a>] ? warn_slowpath_null+0x1a/0x20
 [<ffffffff811bcb59>] ? mntput_no_expire+0x109/0x110
 [<ffffffff8119b881>] ? __fput+0x1a1/0x210
 [<ffffffff8119b915>] ? fput+0x25/0x30
 [<ffffffff81196a3d>] ? filp_close+0x5d/0x90
 [<ffffffff81196b15>] ? sys_close+0xa5/0x100
 [<ffffffff8100b0d2>] ? system_call_fastpath+0x16/0x1b
---[ end trace e87328edb24a9e0a ]---