Comment 15 for bug 800297

task state when frozen:

stack:[<c102fa76>] enqueue_task_rt+0x1a6/0x1c5
stack:[<c102ac3d>] test_tsk_need_resched+0xa/0x13
stack:[<c102dc06>] resched_task+0x30/0x57
stack:[<c102ac3d>] test_tsk_need_resched+0xa/0x13
stack:[<c102e54a>] check_preempt_curr+0x48/0x58
stack:[<c107b514>] rcu_enter_nohz+0xc/0x55
stack:[<c103d00d>] irq_exit+0x5d/0x80
stack:[<c100cd96>] do_IRQ+0x65/0x76
stack:[<c12b971a>] work_resched+0x5/0x20
stack:[<c12b0000>] amd_64_threshold_cpu_callback+0xbb/0x22b
stack:[<ffffffff>] 0xffffffff
stat:26983 (lxpanel) R 1 26983 17542 0 -1 4202496 127554 249 273 1 103527 5501 0 0 20 0 1 0 151461212 170442752 3164 4294967295 134512640 134705020 3217543024 3217541708 3068874055 0 0 4096 0 0 0 0 17 0 0 0 817 0 0
statm:41612 3164 1781 47 0 1305 0
status:Name: lxpanel
status:State: R (running)
status:Tgid: 26983
status:Pid: 26983
status:PPid: 1
status:TracerPid: 0
status:Uid: 1000 1000 1000 1000
status:Gid: 1000 1000 1000 1000
status:FDSize: 256
status:Groups: 6 7 20 22 24 25 29 40 44 46 50 60 107 116 151 154 156 168 171 185 1000 1014 1019 1029 1030
status:VmPeak: 167136 kB
status:VmSize: 166448 kB
status:VmLck: 0 kB
status:VmPin: 0 kB
status:VmHWM: 16628 kB
status:VmRSS: 12656 kB
status:VmData: 5084 kB
status:VmStk: 136 kB
status:VmExe: 188 kB
status:VmLib: 17720 kB
status:VmPTE: 308 kB
status:VmSwap: 0 kB
status:Threads: 1
status:SigQ: 6/64286
status:SigPnd: 0000000000000000
status:ShdPnd: 0000000000000000
status:SigBlk: 0000000000000000
status:SigIgn: 0000000000001000
status:SigCgt: 0000000180000000
status:CapInh: 0000000000000000
status:CapPrm: 0000000000000000
status:CapEff: 0000000000000000
status:CapBnd: ffffffffffffffff
status:Cpus_allowed: ffff
status:Cpus_allowed_list: 0-15
status:Mems_allowed: 1
status:Mems_allowed_list: 0
status:voluntary_ctxt_switches: 1685535
status:nonvoluntary_ctxt_switches: 78354

or
stack:[<c12ba99e>] nmi_handle.isra.0+0x2f/0x4a
stack:[<c107b514>] rcu_enter_nohz+0xc/0x55
stack:[<c103d00d>] irq_exit+0x5d/0x80
stack:[<c100cd96>] do_IRQ+0x65/0x76
stack:[<c12b971a>] work_resched+0x5/0x20
stack:[<c12b0000>] amd_64_threshold_cpu_callback+0xbb/0x22b
stack:[<ffffffff>] 0xffffffff