Debian GNU/Linux testing/unstable mkhppa3 ttyS0

INIT: version 2.86 reloading
BUG: soft lockup detected on CPU#1!
Backtrace:

Press Q/q to quit, Enter to continue:
 [<0000000010111f30>] dump_stack+0x18/0x28
 [<000000001016f670>] softlockup_tick+0x130/0x160
 [<00000000101506f8>] run_local_timers+0x28/0x38
 [<00000000101507d0>] update_process_times+0xc8/0x128
 [<000000001011cd58>] smp_do_timer+0x60/0x80
 [<0000000010112eec>] timer_interrupt+0xec/0x1f0
 [<000000001016f814>] handle_IRQ_event+0x74/0xf8
 [<000000001016f950>] __do_IRQ+0xb8/0x260
 [<0000000010113a98>] do_cpu_irq_mask+0x130/0x1f8
 [<0000000010104074>] intr_return+0x0/0x1c