#0  __spin_lock_debug (lock=0xffff88001c61e940) at /space/jw/git/kgdb/linux-2.6-kgdb/lib/spinlock_debug.c:109
#1  do_raw_spin_lock (lock=0xffff88001c61e940) at /space/jw/git/kgdb/linux-2.6-kgdb/lib/spinlock_debug.c:133
#2  0xffffffff815cf80c in __raw_spin_lock_irqsave (lock=0xffff88001c61e940) at /space/jw/git/kgdb/linux-2.6-kgdb/include/linux/spinlock_api_smp.h:119
#3  _raw_spin_lock_irqsave (lock=0xffff88001c61e940) at /space/jw/git/kgdb/linux-2.6-kgdb/kernel/spinlock.c:148
#4  0xffffffff8104b110 in task_rq_lock (p=0xffff88001c61e300, flags=0xffff88001f406c90) at /space/jw/git/kgdb/linux-2.6-kgdb/kernel/sched.c:969
#5  0xffffffff81059d3f in migrate_disable () at /space/jw/git/kgdb/linux-2.6-kgdb/kernel/sched.c:6153
#6  0xffffffff815cf3eb in rt_spin_trylock_irqsave (lock=0x1, flags=0x0) at /space/jw/git/kgdb/linux-2.6-kgdb/kernel/rtmutex.c:891
#7  0xffffffff8109070d in clocksource_resume_watchdog () at /space/jw/git/kgdb/linux-2.6-kgdb/kernel/time/clocksource.c:360
#8  0xffffffff8109076e in clocksource_touch_watchdog () at /space/jw/git/kgdb/linux-2.6-kgdb/kernel/time/clocksource.c:493
#9  0xffffffff810c515e in dbg_touch_watchdogs () at /space/jw/git/kgdb/linux-2.6-kgdb/kernel/debug/debug_core.c:454