2.5.45 - oops in reap_timer_fnc

Got this on booting 2.5.45. Not seen on subsequent reboot. I was too lazy to copy everything down, plus not everything was on screen.

EIP is at free_block+0x4e/0xe4

Call trace:

reap_timer_fnc
run_timer_tasklet
reap_timer_fnc
tasklet_hi_action
do_softirq
do_IRQ
common_interrupt
system_call

Arf! Killed in interrupt handler etc.