一个内核地址非法访问的问题

wenyukexing

最近在做 linux 系统内核性能测试时遇到了重启问题，Oops报错如下，请各位大虾指导一下：
trace：
DEBUG:->CPU 0 Unable to handle kernel paging request at virtual address
2c01c800, epc == 2c01c800, ra == 2c01c800
Oops[#1]:
Cpu 0
$ 0   : 00000000 00000006 00000000 00000000
$ 4   : 00000000 00000003 00000001 00000000
$ 8   : 803b87f0 83cfee00 00000000 00000000
$12   : 00000000 fffffffb ffffffff 00000000
$16   : 00000000 00003d16 070f0800 00000000
$20   : 00000000 00000000 00000000 00004a0e
$24   : 00000000 83d119f8                  
$28   : 83d10000 83d11cc8 14000a00 2c01c800
Hi    : 00000280
Lo    : 00000230
epc   : 2c01c800 0x2c01c800     Tainted: P     
ra    : 2c01c800 0x2c01c800
Status: 1000f403    KERNEL EXL IE
Cause : 10800008
BadVA : 2c01c800
PrId  : 00019374
Modules linked in: wlan_scan_ap ath_pktlog wlan_me wlan_acl wlan_wep wlan_tkip
wlan_ccmp wlan_xauth ath_pci ath_dev ath_rate_atheros wlan ath_hal
Process telnetd (pid: 819, threadinfo=83d10000, task=812643f
Stack : 14000500 19007f01 01dd0900 037f0101 0000ff7f dd0a0003 7f040100 00004000
        916e52ce ce80067d f0000000 00000000 00801d56 90000000 00000020 00000000
        0d000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
        00000000 00000000 00000000 00000000 00000000 00ffff00 83d11d70 80240000
        80000000 8014951c 0023a709 00000003 810b2005 00000020 00000000 83d11d70
        ...
Call Trace:
[<8014951c>] nf_hook_slow+0x9c/0x1b4
[<80194430>] br_pass_frame_up_finish+0x0/0x20
[<801944bc>] br_pass_frame_up+0x6c/0x94
[<80127494>] skb_clone+0x38/0x294
[<80194430>] br_pass_frame_up_finish+0x0/0x20
[<8019462c>] br_handle_frame_finish+0x148/0x238
[<80194538>] br_handle_frame_finish+0x54/0x238
[<8019497c>] br_handle_frame+0x260/0x394
[<80194964>] br_handle_frame+0x248/0x394
[<c0139640>] ieee80211_find_rxnode+0x50/0xc8 [wlan]
[<c00d52ac>] ath_hal_reg_write+0x40/0x64 [ath_hal]
[<801944e4>] br_handle_frame_finish+0x0/0x238
[<8012e874>] netif_receive_skb+0x174/0x394
[<c00ea71c>] ar5416SetInterrupts+0x450/0x484 [ath_hal]
[<c00ea700>] ar5416SetInterrupts+0x434/0x484 [ath_hal]
[<8012eb48>] process_backlog+0xb4/0x1d8
[<8012ed14>] net_rx_action+0xa8/0x1b0
[<8002e398>] tasklet_action+0x80/0xd0
[<80065dc8>] filp_open+0x50/0x68
[<8002de94>] __do_softirq+0x84/0x130
[<8002dfa8>] do_softirq+0x68/0x80
[<80007254>] do_IRQ+0x24/0x34
[<800039e8>] ar7240_interrupt_receive+0xe8/0x100
[<800039e8>] ar7240_interrupt_receive+0xe8/0x100
[<800e8850>] memset_partial+0x54/0x6c