about rmmod libertas when wifi work

[tommy]

hi,all!
Board:sdio8686

Kernel :2.6.24.2

rmmod libertas_sdio when wifi work,sometime kernel dead

root at localhost:/# ./1.sh 
l2_packet_receive - recvfrom: Network is down
modprobe: FATAL: Could not load /lib/modules/2.6.24.2/modules.dep: No
such file or directory

Bad page state in process 'khelper'
page:c058d600 flags:0x00000000 mapping:00000000 mapcount:0 count:-1
Trying to fix it up, but a reboot is needed
Backtrace:
[<c00297d8>] (dump_stack+0x0/0x14) from [<c006a950>] (bad_page
+0x6c/0xc8)
[<c006a8e4>] (bad_page+0x0/0xc8) from [<c006ac54>]
(get_page_from_freelist+0x2a8/0x400)
 r6:c058d600 r5:000000d0 r4:00000611
[<c006a9ac>] (get_page_from_freelist+0x0/0x400) from [<c006b744>]
(__alloc_pages+0x6c/0x2f4)
[<c006b6d8>] (__alloc_pages+0x0/0x2f4) from [<c006ba14>]
(__get_free_pages+0x48/0x80)
[<c006b9cc>] (__get_free_pages+0x0/0x80) from [<c003fd48>] (copy_process
+0x80/0xeec)
[<c003fcc8>] (copy_process+0x0/0xeec) from [<c0040d84>] (do_fork
+0x98/0x240)
[<c0040cec>] (do_fork+0x0/0x240) from [<c0026024>] (kernel_thread
+0x70/0x80)
 r8:00000000 r7:c0051238 r6:cd3888e0 r5:ce029f00 r4:00000611
[<c0025fb4>] (kernel_thread+0x0/0x80) from [<c0051074>]
(__call_usermodehelper+0x38/0x70)
 r7:00000000 r6:c005103c r5:cd3888e0 r4:00000001
[<c005103c>] (__call_usermodehelper+0x0/0x70) from [<c00515dc>]
(run_workqueue+0x9c/0x11c)
 r5:ce028000 r4:ce0019e0
[<c0051540>] (run_workqueue+0x0/0x11c) from [<c0052068>] (worker_thread
+0xe8/0xfc)
 r6:ce0019e0 r5:ce028000 r4:ce029fb0
[<c0051f80>] (worker_thread+0x0/0xfc) from [<c0055680>] (kthread
+0x5c/0x94)
 r6:c0051f80 r5:ce0019e0 r4:ce028000
[<c0055624>] (kthread+0x0/0x94) from [<c0044b5c>] (do_exit+0x0/0x6b4)
 r6:00000000 r5:00000000 r4:00000000