我在SD卡上放了一个mplayer,插入ARM9的SD卡槽，然后挂载：mount -t vfat /dev/mmcblk0p1 /tmp
就是把SD卡挂载到了tmp里面
进入tmp运行mplayer，./mplayer *.avi
一开始能运行，可是运行几秒钟以后就死机了，然后就弹出：
BUG: soft lockup - CPU#0 stuck for 61s! [mmcqd:884]
Modules linked in:
Pid: 884, comm: mmcqd
CPU: 0 Not tainted (2.6.28.7 #337)
PC is at do_pio_write+0xc8/0x154
LR is at 0xc39c89c0
pc : [<c020f7e4>] lr : [<c39c89c0>] psr: 20000013
sp : c39cfda4 ip : 00000003 fp : c39cfdbc
r10: c39cfef8 r9 : c39c8800 r8 : c39cff0c
r7 : c39cff64 r6 : c39c89c0 r5 : c5000040 r4 : 00000000
r3 : 000001c4 r2 : c2c7643c r1 : 000001c4 r0 : c39c8000
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: c000717f Table: 32804000 DAC: 00000017
[<c002bd0c>] (show_regs+0x0/0x4c) from [<c006ac50>] (softlockup_tick+0x104/0x14c)
r4:01312c4b
[<c006ab4c>] (softlockup_tick+0x0/0x14c) from [<c0052250>] (run_local_timers+0x1c/0x20)
[<c0052234>] (run_local_timers+0x0/0x20) from [<c0052280>] (update_process_times+0x2c/0x58)
[<c0052254>] (update_process_times+0x0/0x58) from [<c002e59c>] (timer_tick+0xdc/0x100)
r5:00000000 r4:c0394520
[<c002e4c0>] (timer_tick+0x0/0x100) from [<c0033bb0>] (s3c2410_timer_interrupt+0x10/0x18)
r5:00000000 r4:c0366850
[<c0033ba0>] (s3c2410_timer_interrupt+0x0/0x18) from [<c006b30c>] (handle_IRQ_event+0x44/0x80)
[<c006b2c8>] (handle_IRQ_event+0x0/0x80) from [<c006cb3c>] (handle_edge_irq+0x104/0x144)
r7:c39cff64 r6:c0366850 r5:0000001e r4:c0369bd4
[<c006ca38>] (handle_edge_irq+0x0/0x144) from [<c002a064>] (asm_do_IRQ+0x64/0x80)
r6:00000000 r5:c03a0df4 r4:0000001e
[<c002a000>] (asm_do_IRQ+0x0/0x80) from [<c002a9e4>] (__irq_svc+0x24/0xa0)
Exception stack(0xc39cfd5c to 0xc39cfda4)
fd40: c39c8000
fd60: 000001c4 c2c7643c 000001c4 00000000 c5000040 c39c89c0 c39cff64 c39cff0c
fd80: c39c8800 c39cfef8 c39cfdbc 00000003 c39cfda4 c39c89c0 c020f7e4 20000013
fda0: ffffffff
r6:00004000 r5:f4000000 r4:ffffffff