rcu_sched detected stalls info for hyades

dmesg.txt

[81210.948409] INFO: rcu_sched detected stalls on CPUs/tasks:
[81210.951215] 	(detected by 1, t=15712987 jiffies, g=1158641, c=1158640, q=19)
[81210.954048] All QSes seen, last rcu_sched kthread activity 15712987 (4315195843-4299482856), jiffies_till_next_fqs=1, root ->qsmask 0x0
[81210.959599] qemu            R  running task        0 11176    777 0x00000008
[81210.959604]  ffffffffac84a600 ffffffffabca2d7b ffff964a1fd18f80 ffffffffac84a600
[81210.959607]  ffffffffabcde16c 0000000000000000 ffff964a06d04dc0 000000000011adf1
[81210.959609]  0000000000000000 0000000000000000 ffffffff00000000 00001e84d8b11400
[81210.959611] Call Trace:
[81210.959615]  <IRQ> 
[81210.959622]  [<ffffffffabca2d7b>] ? sched_show_task+0xcb/0x130
[81210.959625]  [<ffffffffabcde16c>] ? rcu_check_callbacks+0x89c/0x8a0
[81210.959629]  [<ffffffffabcf3da0>] ? tick_sched_handle.isra.12+0x50/0x50
[81210.959631]  [<ffffffffabce4b68>] ? update_process_times+0x28/0x50
[81210.959632]  [<ffffffffabcf3d70>] ? tick_sched_handle.isra.12+0x20/0x50
[81210.959634]  [<ffffffffabcf3dd8>] ? tick_sched_timer+0x38/0x70
[81210.959635]  [<ffffffffabce558c>] ? __hrtimer_run_queues+0xdc/0x240
[81210.959637]  [<ffffffffabce5c5c>] ? hrtimer_interrupt+0x9c/0x1a0
[81210.959640]  [<ffffffffc03fc000>] ? 0xffffffffc03fc000
[81210.959644]  [<ffffffffac20a749>] ? smp_apic_timer_interrupt+0x39/0x50
[81210.959645]  [<ffffffffac209282>] ? apic_timer_interrupt+0x82/0x90
[81210.959645]  <EOI> 
[81210.959647]  [<ffffffffc03fc000>] ? 0xffffffffc03fc000
[81210.959649]  [<ffffffffabcf88f3>] ? smp_call_function_single+0xd3/0x130
[81210.959651]  [<ffffffffabcf8b45>] ? smp_call_function_many+0xc5/0x250
[81210.959652]  [<ffffffffc03fc000>] ? 0xffffffffc03fc000
[81210.959676]  [<ffffffffc040265d>] ? kvm_make_all_cpus_request+0xdd/0x110 [kvm]
[81210.959688]  [<ffffffffc04026a8>] ? kvm_flush_remote_tlbs+0x18/0x40 [kvm]
[81210.959703]  [<ffffffffc041e433>] ? kvm_mmu_commit_zap_page+0x23/0xe0 [kvm]
[81210.959718]  [<ffffffffc0424c00>] ? mmu_free_roots+0x170/0x180 [kvm]
[81210.959733]  [<ffffffffc0424c1e>] ? kvm_mmu_unload+0xe/0x30 [kvm]
[81210.959747]  [<ffffffffc041b754>] ? kvm_arch_vcpu_ioctl_run+0x9d4/0x1600 [kvm]
[81210.959749]  [<ffffffffabd85ce6>] ? __alloc_pages_nodemask+0xf6/0x260
[81210.959763]  [<ffffffffc041546b>] ? kvm_arch_vcpu_load+0x5b/0x270 [kvm]
[81210.959765]  [<ffffffffabdf8918>] ? mem_cgroup_commit_charge+0x78/0x4b0
[81210.959777]  [<ffffffffc0401605>] ? kvm_vcpu_ioctl+0x315/0x5d0 [kvm]
[81210.959780]  [<ffffffffabdb383e>] ? handle_mm_fault+0xefe/0x12d0
[81210.959782]  [<ffffffffabc24761>] ? __switch_to+0x2c1/0x6d0
[81210.959784]  [<ffffffffabe1642f>] ? do_vfs_ioctl+0x9f/0x600
[81210.959786]  [<ffffffffabc5edcf>] ? __do_page_fault+0x28f/0x500
[81210.959787]  [<ffffffffabe16a04>] ? SyS_ioctl+0x74/0x80
[81210.959789]  [<ffffffffac20763b>] ? system_call_fast_compare_end+0xc/0x9b
[81210.959792] rcu_sched kthread starved for 15712987 jiffies! g1158641 c1158640 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0
[81210.962695] rcu_sched       R  running task        0     7      2 0x00000000
[81210.962698]  ffff964a15552c00 0000000000000000 ffff964a1abe8e40 ffff964a1fc18200
[81210.962700]  ffffffffac80e500 ffffa7098065fdb0 ffffffffac202933 ffffa7098065fde0
[81210.962702]  000000010044e6e7 ffff964a1fc18200 0000000000000000 ffff964a1abe8e40
[81210.962704] Call Trace:
[81210.962707]  [<ffffffffac202933>] ? __schedule+0x233/0x6d0
[81210.962709]  [<ffffffffac202e02>] ? schedule+0x32/0x80
[81210.962710]  [<ffffffffac2060fb>] ? schedule_timeout+0x16b/0x350
[81210.962712]  [<ffffffffabce3070>] ? del_timer_sync+0x50/0x50
[81210.962713]  [<ffffffffabcdc805>] ? rcu_gp_kthread+0x505/0x850
[81210.962715]  [<ffffffffabcb79d9>] ? __wake_up_common+0x49/0x80
[81210.962717]  [<ffffffffabcdc300>] ? rcu_note_context_switch+0xe0/0xe0
[81210.962719]  [<ffffffffabc95777>] ? kthread+0xd7/0xf0
[81210.962721]  [<ffffffffabc956a0>] ? kthread_park+0x60/0x60
[81210.962723]  [<ffffffffac2078b5>] ? ret_from_fork+0x25/0x30