apic related BUG: soft lockup detected on CPU#0!

[Frank van Maarseveen]

FYI,

2.6.21.1, tainted with ATI fglrx driver (so maybe take it with a grain
of salt):

When I attempted to kill -9 an unresponsive looping X server (desktop
processes were gone at that time) the system locked up and reported
the following:

BUG: soft lockup detected on CPU#0!
 [<c01054a9>] show_trace_log_lvl+0x19/0x30
 [<c01054d2>] show_trace+0x12/0x20
 [<c01055d4>] dump_stack+0x14/0x20
 [<c014a7a2>] softlockup_tick+0xa2/0xc0
 [<c012bf02>] run_local_timers+0x12/0x20
 [<c012bd1d>] update_process_times+0x5d/0x90
 [<c013d91f>] tick_sched_timer+0x4f/0xb0
 [<c01393f7>] hrtimer_interrupt+0x177/0x1e0
 [<c010fb07>] local_apic_timer_interrupt+0x57/0x60
 [<c010fb33>] smp_apic_timer_interrupt+0x23/0x40
 [<c0105158>] apic_timer_interrupt+0x28/0x30
 =======================

-- 
Frank
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