System had hard lockup in spinlock called by 'blk_dev_redirect_submit()` from the module 'veeamsnap'

Issue

• System crashed due to hard lockup with the below call trace.

...
Kernel panic - not syncing: Hard LOCKUP
Pid: 34714, comm: veeamimage0 Tainted: P        W  -- ------------    2.6.32-754.3.5.el6.x86_64 #1
Call Trace:
 <NMI>  [<ffffffff81558237>] ? panic+0xa7/0x18b
 [<ffffffff8100fa35>] ? show_trace+0x15/0x20
 [<ffffffff810f7600>] ? watchdog_timer_fn+0x0/0x230
 [<ffffffff811309aa>] ? __perf_event_overflow+0xaa/0x240
 [<ffffffff8101e728>] ? x86_perf_event_set_period+0xf8/0x180
 [<ffffffff81131004>] ? perf_event_overflow+0x14/0x20
 [<ffffffff81025c8c>] ? intel_pmu_handle_irq+0x21c/0x4a0
 [<ffffffff8155d0f3>] ? save_paranoid+0xf3/0x110
 [<ffffffff8155e83f>] ? perf_event_nmi_handler+0x3f/0xb0
 [<ffffffff81560350>] ? notifier_call_chain+0x50/0x80
 [<ffffffff8155d0e7>] ? save_paranoid+0xe7/0x110
 [<ffffffff815603ba>] ? atomic_notifier_call_chain+0x1a/0x20
 [<ffffffff810b12ee>] ? notify_die+0x2e/0x30
 [<ffffffff8155dea9>] ? do_nmi+0xd9/0x360
 [<ffffffff8155d781>] ? nmi+0x131/0x193
 [<ffffffff8155bea8>] ? _spin_lock_irq+0x28/0x40
 <<EOE>>  [<ffffffff812882bc>] ? blk_queue_bio+0x6c/0x5a0
 [<ffffffff8106f6fe>] ? perf_event_task_sched_out+0x2e/0x70
 [<ffffffff81297016>] ? throtl_find_tg+0x46/0x60
 [<ffffffffa0398bdd>] ? tracking_make_request+0x12d/0x270 [veeamsnap]
 [<ffffffff812869a5>] ? generic_make_request+0x245/0x5b0
 [<ffffffff81286d7e>] ? submit_bio+0x6e/0x120
 [<ffffffffa0389a35>] ? blk_dev_redirect_submit+0x45/0x60 [veeamsnap]
 [<ffffffffa0396561>] ? snapstore_device_read+0x281/0x300 [veeamsnap]
 [<ffffffffa0392c30>] ? snapimage_processor_thread+0x0/0x120 [veeamsnap]
 [<ffffffffa0392ba1>] ? _snapimage_processing+0x61/0xf0 [veeamsnap]
 [<ffffffffa0392c30>] ? snapimage_processor_thread+0x0/0x120 [veeamsnap]
 [<ffffffffa0392cd8>] ? snapimage_processor_thread+0xa8/0x120 [veeamsnap]
 [<ffffffffa0392c30>] ? snapimage_processor_thread+0x0/0x120 [veeamsnap]
 [<ffffffff810aaa30>] ? kthread+0xa0/0xc0
 [<ffffffff815657d0>] ? child_rip+0x20/0x30
 [<ffffffff810aa990>] ? kthread+0x0/0xc0
 [<ffffffff815657b0>] ? child_rip+0x0/0x30