#20727: CPU 0 Unable to handle kernel paging request at virtual address
----------------------+---------------------------------------
Reporter: webtron | Owner: developers
Type: defect | Status: new
Priority: high | Milestone: Designated Driver (Trunk)
Component: kernel | Version: Trunk
Resolution: | Keywords:
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Comment (by webtron):
No the only thing I have been able to pinpoint is when I restarted the
wifi and it occurred once. Here's the log from the wifi restart.
Sat Oct 3 00:02:13 2015 daemon.notice netifd: Network device 'wlan0-1'
link is down
Sat Oct 3 00:02:13 2015 kern.info kernel: [168832.491602] br-lan: port
4(wlan0-1) entered disabled state
Sat Oct 3 00:02:13 2015 kern.info kernel: [168832.503718] device wlan0-1
left promiscuous mode
Sat Oct 3 00:02:13 2015 kern.info kernel: [168832.507219] br-lan: port
4(wlan0-1) entered disabled state
Sat Oct 3 00:02:13 2015 kern.alert kernel: [168832.530275] CPU 0 Unable
to handle kernel paging request at virtual address 00000000, epc ==
801ed854, ra == 801ed838
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.539728] Oops[#1]:
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.541874] CPU: 0 PID:
17055 Comm: hostapd Not tainted 4.1.2 #8
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.547948] task: 83a82840
ti: 83356000 task.ti: 83356000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.553406] $ 0 :
00000000 00000000 8335f8d0 8335f910
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.558702] $ 4 :
80380000 8335f90c 00000000 00000001
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.563996] $ 8 :
82c14a00 00000033 001c0066 00000001
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.569291] $12 :
00000000 00000000 00000000 00000000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.574588] $16 :
80380000 832c22b0 80375dd0 80370000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.579881] $20 :
80347df4 80348030 00100100 00000008
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.585177] $24 :
00000000 801ee3a8
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.590471] $28 :
83356000 83357b30 00000000 801ed838
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.595768] Hi :
000001d2
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.598720] Lo :
00000004
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.601706] epc :
801ed854 driver_deferred_probe_del+0x3c/0x60
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.607760] ra :
801ed838 driver_deferred_probe_del+0x20/0x60
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.613824] Status:
1000f403 KERNEL EXL IE
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.618078] Cause :
0080000c
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.621029] BadVA :
00000000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.623983] PrId :
00019374 (MIPS 24Kc)
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.627971] Modules linked
in: ath9k ath9k_common iptable_nat ebtable_nat ebtable_filter
ebtable_broute ath9k_hw ath nf_nat_ipv4 nf_conntrack_ipv4 mac80211
iptable_mangle iptable_filter ipt_REJECT ipt_MASQUERADE ip_tables ebtables
ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit
ebt_among ebt_802_3 cfg80211 xt_time xt_tcpudp xt_nat xt_multiport xt_mark
xt_mac xt_limit xt_id xt_comment xt_TCPMSS xt_REDIRECT xt_LOG x_tables
nf_reject_ipv4 Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.688399]
Process hostapd (pid: 17055, threadinfo=83356000, task=83a82840,
tls=77a85644)
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] Stack :
8335fd88 8019a618 00000011 832c22b0 832c22b0 832c22b0 8387d634 801ea6ec
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 832c22b0
8019a778 80347df4 00150040 832c2000 832c22b0 00000004 8025b7e4
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 82dc9900
bcab98c2 83357b94 832c2000 83357bd8 82dc9900 80348030 802403c0
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 00000004
8026951c 82d9f000 833240c0 83357ba0 83357ba0 832c2000 00000000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 832c2408
83357c74 83b91000 00000000 00000004 80240468 83a82870 83a82840
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] ...
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.732227] Call Trace:
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.734759] [<801ed854>]
driver_deferred_probe_del+0x3c/0x60
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.740490] [<801ea6ec>]
device_del+0x160/0x1f0
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.745108] [<802403c0>]
rollback_registered_many+0x300/0x380
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.750905] [<80240468>]
rollback_registered+0x28/0x44
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.756119] [<80242df0>]
unregister_netdevice_queue+0x78/0xc0
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.762009] [<8319a4b4>]
ieee80211_csa_finish+0x23a8/0x24c4 [mac80211]
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.768552]
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.770073]
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.770073] Code: 02002021
8c460044 aca60004 <acc50000> ac430040 ac430044 8fbf001c 8fb10018
8fb00014
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.780826] ---[ end trace
e8094fecd70e5104 ]---
There's no external medium attached.
The AP's use curl to pull a config file from a server and output it to
/tmp. This file is generally empty so nothing else happens.
The same hardware with the same functions using version 41336 didn't
display this problem.
Do both of these logs point to a read/write error?
--
Ticket URL: <https://dev.openwrt.org/ticket/20727#comment:2>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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