* [ath9k-devel] BUG: transmit buffer overflow?
@ 2012-03-13 2:13 Thomas Pedersen
2012-03-13 12:28 ` David Fulgham
0 siblings, 1 reply; 2+ messages in thread
From: Thomas Pedersen @ 2012-03-13 2:13 UTC (permalink / raw)
To: ath9k-devel
Hi ath9k-devel,
We received the following bug report:
Forwarded conversation
Subject: transmit buffer overflow ?
------------------------
From: *David Fulgham* <david.a.fulgham@gmail.com>
Date: Sun, Mar 4, 2012 at 8:19 PM
To: devel <devel@lists.open80211s.org>
I've been experiencing an issue with our mesh network and mesh nodes
repeating constantly. After some troubleshooting it looks like I may have
come across a transmit buffer overrun issue or the like.
I've been able to reproduce it quite readily by simply pushing as many
packets through the mesh as possible between two nodes that have a low
signal level connection (i.e. < 75dbm) and thus have a situation where
there is a need to re-transmit a larger number of packets.
PC -> MeshNode1 ~~ <75dbm link ~~ Meshnode2
I then ping mesh node 2 from the PC with a command like
ping -i .01 <ip of mesh node 2>
and after a few minutes (and I assume the transmit buffer fills up and
overflows) one or both of the radios will reboot. I can make the reboot
happen pretty much anytime I want by moving the radios to almost out of
range of each other. I'm using the openwrt trunk snapshot from Feb26th on
UBNT Rocket 5M devices, and thus don't have any debugging turned on.
I have determined that the radio reboot that I am experiencing only happens
if the mesh interface is bridged with another (i.e. a mesh portal, mesh/ap
bridge or mesh/eth bridge). If the mesh interface is brought up and not
bridged the router doesn't seem to have the reboot issue. All of my mesh
nodes require a bridge to either a Access Point or to a ethernet network.
[describing a bridged scenario below..]
As you can see in the video I am able to ping both routers (left on top,
right on bottom) which is working well, however when I put my hand over the
antenna ports on the radio on the left to reduce the signal level enough to
cause the radios to communicate poorly and thus cause transmit retries, the
radio on the right reboots followed closely by the radio on the left. Both
radios reboot. This is happening in the field constantly on all mesh
radios in my 5.8Ghz mesh.
root at OpenWrt:/# cat /sys/kernel/debug/crashlog
Time: 1331498343.850201
Modules: ohci_hcd at 83120000+3de0 nf_nat_irc at 830f7000+360
nf_conntrack_irc at 830db000+9f0 nf_nat_ftp at 830ee000+420
nf_conntrack_ftp at 830f4000+1190 ipt_MASQUERADE at 830c5000+420
iptable_nat at 830d5000+8d5 nf_nat at 830dc000+2917
xt_conntrack at 830ed000+850 xt_CT at 830ea000+510 xt_NOTRACK at 830b1000+210
iptable_raw at 83b08000+280 xt_state at 83b0f000+2b0
nf_conntrack_ipv4 at 830b5000+f94 nf_defrag_ipv4 at 83bfb000+2e6
nf_conntrack at 830e0000+99e2 ehci_hcd at 830c8000+7f70 pppoe at 830bc000+1d80
pppox at 83b0b000+55a ipt_REJECT at 830b4000+760 xt_TCPMSS at 83a09000+770
ipt_LOG at 830b2000+17f0 xt_comment at 83b09000+1e0 xt_multiport at 83bfa000+4a0
xt_mac at 830af000+260 xt_limit at 83aed000+400 iptable_mangle at 83b0c000+390
iptable_filter at 83a26000+2c0 ip_tables at 83afc000+237d xt_tcpudp at 83ae5000+6b0
x_tables at 83a50000+2ad5 ppp_async at 83aba000+1790 ppp_generic at 830a8000+4a42
slhc at 839aa000+11eb ath9k at 83b20000+1395d ath9k_common at 839be000+5e9
ath9k_hw at 83b80000+4f29b ath at 839b8000+3939 mac80211 at 83b40000+3cac4
usbcore at 83aa0000+19564 usb_common at 83ae4000+232 nls_base at 839a8000+130e
crc_ccitt at 839cd000+3fb cfg80211 at 83ac0000+22fb2 compat at 83a34000+2f0
arc4 at 83a4b000+350 aes_generic at 83a38000+7509
crypto_algapi at 83a10000+28a1 leds_gpio at 839da000+660
gpio_button_hotplug at 8398b000+cc0
<5>[ 0.000000] Linux version 3.2.9 (user at leesee-ThinkPad-R61e) (gcc
version 4.6.3 20120201 (prerelease) (Linaro GCC 4.6-2012.02) ) #5 Sun Mar
11 16:20:22 EDT 2012
<7>[ 0.000000] MyLoader: sysp=00000000, boardp=00000000,
parts=ffffffff<7>[ 0.000000] free_area_init_node: node 0, pgdat
802edcf0, node_mem_map 81000000<6>[ 0.000000] Memory: 61636k/65536k
available (2063k kernel code, 3900k reserved, 553k data, 192k init, 0k
highmem)
<5>[ 7.030000] JFFS2 notice: (1) jffs2_build_xattr_subsystem: complete
building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref
(0 dead, 0 orphan) found.
<6>[ 7.050000] VFS: Mounted root (jffs2 filesystem) readonly on device
31:3.
<6>[ 7.050000] Freeing unused kernel memory: 192k freed
<7>[ 13.150000] Registered led device: ubnt:red:link1
<7>[ 13.150000] Registered led device: ubnt:orange:link2
<7>[ 13.150000] Registered led device: ubnt:green:link3
<7>[ 13.150000] Registered led device: ubnt:green:link4 <6>[ 16.410000]
eth0: link down
<6>[ 17.010000] Compat-wireless backport release:
compat-wireless-2012-02-27-1-r30877
<6>[ 17.010000] Backport based on wireless-testing.git master-2012-02-27
<6>[ 17.340000] cfg80211: Calling CRDA to update world regulatory domain
<6>[ 17.720000] usbcore: registered new interface driver usbfs
<6>[ 17.730000] usbcore: registered new interface driver hub
<6>[ 17.740000] usbcore: registered new device driver usb
<6>[ 18.500000] cfg80211: World regulatory domain updated:
<6>[ 18.500000] cfg80211: (start_freq - end_freq @ bandwidth),
(max_antenna_gain, max_eirp)
<6>[ 18.510000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
<6>[ 18.520000] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300
mBi, 2000 mBm)
<6>[ 18.530000] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300
mBi, 2000 mBm)
<6>[ 18.540000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
<6>[ 18.540000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
<4>[ 19.280000] PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
<7>[ 19.290000] PCI: Setting latency timer of device 0000:00:00.0 to 64
<7>[ 19.290000] ath: EEPROM regdomain: 0x0
<7>[ 19.290000] ath: EEPROM indicates default country code should be used
<7>[ 19.290000] ath: doing EEPROM country->regdmn map search
<7>[ 19.290000] ath: country maps to regdmn code: 0x3a
<7>[ 19.290000] ath: Country alpha2 being used: US
<7>[ 19.290000] ath: Regpair used: 0x3a
<7>[ 19.300000] ieee80211 phy0: Selected rate control algorithm
'minstrel_ht'
<7>[ 19.300000] Registered led device: ath9k-phy0
<6>[ 19.300000] ieee80211 phy0: Atheros AR9280 Rev:2 mem=0xb0000000,
irq=40
<6>[ 19.310000] cfg80211: Calling CRDA for country: US
<6>[ 19.370000] cfg80211: Regulatory domain changed to country: US
<6>[ 19.380000] cfg80211: (start_freq - end_freq @ bandwidth),
(max_antenna_gain, max_eirp)
<6>[ 19.380000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300
mBi, 2700 mBm)
<6>[ 19.390000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300
mBi, 1700 mBm)
<6>[ 19.400000] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
<6>[ 19.410000] cfg80211: (5490000 KHz - 5600000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
<6>[ 19.420000] cfg80211: (5650000 KHz - 5710000 KHz @ 40000 KHz), (300
mBi, 2000 mBm)
<6>[ 19.420000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300
mBi, 3000 mBm)
<6>[ 19.510000] PPP generic driver version 2.4.2
<6>[ 19.630000] ip_tables: (C) 2000-2006 Netfilter Core Team
<6>[ 19.800000] NET: Registered protocol family 24
<6>[ 19.930000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
<6>[ 20.050000] nf_conntrack version 0.5.0 (966 buckets, 3864 max)
<6>[ 20.380000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
<6>[ 20.390000] ath79-ohci ath79-ohci: Atheros built-in OHCI controller
<6>[ 20.390000] ath79-ohci ath79-ohci: new USB bus registered, assigned
bus number 1
<6>[ 20.400000] ath79-ohci ath79-ohci: irq 14, io mem 0x1b000000
<6>[ 20.470000] hub 1-0:1.0: USB hub found
<6>[ 20.470000] hub 1-0:1.0: 1 port detected
<6>[ 22.210000] device eth0 entered promiscuous mode
<6>[ 22.750000] eth0: link up (100Mbps/Full duplex)
<6>[ 22.750000] br-lan: port 1(eth0) entering forwarding state
<6>[ 22.760000] br-lan: port 1(eth0) entering forwarding state
<6>[ 23.620000] device wlan0 entered promiscuous mode
<6>[ 23.630000] br-lan: port 2(wlan0) entering forwarding state
<6>[ 23.630000] br-lan: port 2(wlan0) entering forwarding state
<6>[ 24.860000] device eth0 left promiscuous mode
<6>[ 24.860000] br-lan: port 1(eth0) entering forwarding state
<6>[ 25.280000] device eth0 entered promiscuous mode
<6>[ 25.280000] br-lan: port 1(eth0) entering forwarding state
<6>[ 25.290000] br-lan: port 1(eth0) entering forwarding state
<1>[ 106.180000] CPU 0 Unable to handle kernel paging request at virtual
address 00000004, epc == 83b29074, ra == 83b28fc8
<4>[ 106.190000] Oops[#1]:
<4>[ 106.190000] Cpu 0
<4>[ 106.190000] $ 0 : 00000000 80320000 00000000 00000000
<4>[ 106.190000] $ 4 : 00000000 83a74000 00000000 0000002f
<4>[ 106.190000] $ 8 : 00000018 80163458 831736c0 00000001
<4>[ 106.190000] $12 : 00000012 0012002b 00000001 00000050
<4>[ 106.190000] $20 : 83b39a70 00000000 83a05b70 0000002f
<4>[ 106.190000] $24 : 00000003 83b2151c
<4>[ 106.190000] $28 : 802d4000 802d5b78 0000002f 83b28fc8
<4>[ 106.190000] Hi : 00000005
<4>[ 106.190000] Lo : 00000000
<4>[ 106.190000] epc : 83b29074 ath_txchainmask_reduction+0x154/0x1170
[ath9k]
<4>[ 106.190000] Tainted: G O
<4>[ 106.190000] ra : 83b28fc8 ath_txchainmask_reduction+0xa8/0x1170
[ath9k]
<4>[ 106.190000] Status: 1000d403 KERNEL EXL IE
<4>[ 106.190000] Cause : 00800008
<4>[ 106.190000] BadVA : 00000004
<4>[ 106.190000] PrId : 00019374 (MIPS 24Kc)
<4>[ 106.190000] Modules linked in: ohci_hcd nf_nat_irc nf_conntrack_irc
nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_conntrack
xt_CT xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4
nf_conntrack ehci_hcd pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG xt_comment
xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables
xt_tcpudp x_tables ppp_async ppp_generic slhc ath9k(O) ath9k_common(O)
ath9k_hw(O) ath(O) mac80211(O) usbcore usb_common nls_base crc_ccitt
cfg80211(O) compat(O) arc4 aes_generic crypto_algapi leds_gpio
gpio_button_hotplug(O)
<4>[ 106.190000] Process swapper (pid: 0, threadinfo=802d4000,
task=802d7c80, tls=00000000)
<4>[ 106.190000] Stack : 00000027 228deb25 00215c15 f6c1c874 88030000
00000000 00010100 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000010 00000000
00000000 00000000 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<4>[ 106.190000] ...
<4>[ 106.190000] Call Trace:
<4>[ 106.190000] [<83b29074>] ath_txchainmask_reduction+0x154/0x1170
[ath9k]
<4>[ 106.190000] [<83b28fc8>] ath_txchainmask_reduction+0xa8/0x1170 [ath9k]
<4>[ 106.190000]
<4>[ 106.190000]
<4>[ 106.190000] Code: 00831821 70522002 8c630000 <8c630004> 00839021
8e2308ec 92420007 30630020 10600004
<4>[ 106.400000] ---[ end trace 574d10138db4623f ]---
===================================
Time: 1331498343.857098
on+0x154/0x1170 [ath9k]
<4>[ 106.190000] Tainted: G O
<4>[ 106.190000] ra : 83b28fc8 ath_txchainmask_reduction+0xa8/0x1170
[ath9k]
<4>[ 106.190000] Status: 1000d403 KERNEL EXL IE
<4>[ 106.190000] Cause : 00800008
<4>[ 106.190000] BadVA : 00000004
<4>[ 106.190000] PrId : 00019374 (MIPS 24Kc)
<4>[ 106.190000] Modules linked in: ohci_hcd nf_nat_irc nf_conntrack_irc
nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_conntrack
xt_CT xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4
nf_conntrack ehci_hcd pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG xt_comment
xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables
xt_tcpudp x_tables ppp_async ppp_generic slhc ath9k(O) ath9k_common(O)
ath9k_hw(O) ath(O) mac80211(O) usbcore usb_common nls_base crc_ccitt
cfg80211(O) compat(O) arc4 aes_generic crypto_algapi leds_gpio
gpio_button_hotplug(O)
<4>[ 106.190000] Process swapper (pid: 0, threadinfo=802d4000,
task=802d7c80, tls=00000000)
<4>[ 106.190000] Stack : 00000027 228deb25 00215c15 f6c1c874 88030000
00000000 00010100 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000010 00000000
00000000 00000000 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<4>[ 106.190000] ...
<4>[ 106.190000] Call Trace:
<4>[ 106.190000] [<83b29074>] ath_txchainmask_reduction+0x154/0x1170
[ath9k]
<4>[ 106.190000] [<83b28fc8>] ath_txchainmask_reduction+0xa8/0x1170 [ath9k]
<4>[ 106.190000]
<4>[ 106.190000]
<4>[ 106.190000] Code: 00831821 70522002 8c630000 <8c630004> 00839021
8e2308ec 92420007 30630020 10600004
<4>[ 106.400000] ---[ end trace 574d10138db4623f ]---
<0>[ 106.410000] Kernel panic - not syncing: Fatal exception in interrupt
David.
----- End forwarded message -----
^ permalink raw reply [flat|nested] 2+ messages in thread
* [ath9k-devel] BUG: transmit buffer overflow?
2012-03-13 2:13 [ath9k-devel] BUG: transmit buffer overflow? Thomas Pedersen
@ 2012-03-13 12:28 ` David Fulgham
0 siblings, 0 replies; 2+ messages in thread
From: David Fulgham @ 2012-03-13 12:28 UTC (permalink / raw)
To: ath9k-devel
ath9k-devel:
Just some further information regarding the bug
after extensive testing I have ruled out the following:
1) not an issue with bridging as reboot happens regardless of bridging the
interfaces
2) router does not reboot if no mesh interface is defined.
3) router does not reboot if mesh interface is added but without a meshid
4) router does not reboot if added to an empty mesh (ie. a meshid without
any other nodes)
5) router does not reboot if added to the existing mesh but with a
rssi_threshold so that no nodes are acceptable. (ie.
mesh_rssi_threshold=-30, and thus no established plinks
6) setting auto_plinks to off and adding the plinks manually didn't seem to
help (with a rssi_threshold that would allow the nodes to be added.)
These are more mesh specific as this is the environment that i'm working
in. I can try and duplicate the kernel panic with AP/STA if needed.
The router does reboot when I add the router to a mesh w/meshid with other
nodes, it takes a few minutes and the plinks need to be low signal i.e. <75
dBm. the time between rebbots seems to be dependant on the number of nodes
and the amount of traffic.
The Router will reboot regardless of if the mesh interface has an IP
address or not.
In my lab I have created a simple two node mesh (with antenna removed to
lower the RSSI) they are separated until the signal level reduces to <
75dBm these nodes will reboot pretty constantly at between 5-10min.
In my live network the nodes will reboot even quicker than that. (1-2min
Regards,
David Fulgham
On Mon, Mar 12, 2012 at 10:13 PM, Thomas Pedersen <thomas@cozybit.com>wrote:
> Hi ath9k-devel,
>
> We received the following bug report:
>
> Forwarded conversation
> Subject: transmit buffer overflow ?
> ------------------------
>
> From: *David Fulgham* <david.a.fulgham@gmail.com>
> Date: Sun, Mar 4, 2012 at 8:19 PM
> To: devel <devel@lists.open80211s.org>
>
>
> I've been experiencing an issue with our mesh network and mesh nodes
> repeating constantly. After some troubleshooting it looks like I may have
> come across a transmit buffer overrun issue or the like.
>
> I've been able to reproduce it quite readily by simply pushing as many
> packets through the mesh as possible between two nodes that have a low
> signal level connection (i.e. < 75dbm) and thus have a situation where
> there is a need to re-transmit a larger number of packets.
>
> PC -> MeshNode1 ~~ <75dbm link ~~ Meshnode2
>
> I then ping mesh node 2 from the PC with a command like
>
> ping -i .01 <ip of mesh node 2>
>
> and after a few minutes (and I assume the transmit buffer fills up and
> overflows) one or both of the radios will reboot. I can make the reboot
> happen pretty much anytime I want by moving the radios to almost out of
> range of each other. I'm using the openwrt trunk snapshot from Feb26th on
> UBNT Rocket 5M devices, and thus don't have any debugging turned on.
>
> I have determined that the radio reboot that I am experiencing only happens
> if the mesh interface is bridged with another (i.e. a mesh portal, mesh/ap
> bridge or mesh/eth bridge). If the mesh interface is brought up and not
> bridged the router doesn't seem to have the reboot issue. All of my mesh
> nodes require a bridge to either a Access Point or to a ethernet network.
>
> [describing a bridged scenario below..]
>
> As you can see in the video I am able to ping both routers (left on top,
> right on bottom) which is working well, however when I put my hand over the
> antenna ports on the radio on the left to reduce the signal level enough to
> cause the radios to communicate poorly and thus cause transmit retries, the
> radio on the right reboots followed closely by the radio on the left. Both
> radios reboot. This is happening in the field constantly on all mesh
> radios in my 5.8Ghz mesh.
>
>
> root at OpenWrt:/# cat /sys/kernel/debug/crashlog
> Time: 1331498343.850201
> Modules: ohci_hcd at 83120000+3de0 nf_nat_irc at 830f7000+360
> nf_conntrack_irc at 830db000+9f0 nf_nat_ftp at 830ee000+420
> nf_conntrack_ftp at 830f4000+1190 ipt_MASQUERADE at 830c5000+420
> iptable_nat at 830d5000+8d5 nf_nat at 830dc000+2917
> xt_conntrack at 830ed000+850 xt_CT at 830ea000+510
> xt_NOTRACK at 830b1000+210
> iptable_raw at 83b08000+280 xt_state at 83b0f000+2b0
> nf_conntrack_ipv4 at 830b5000+f94 nf_defrag_ipv4 at 83bfb000+2e6
> nf_conntrack at 830e0000+99e2 ehci_hcd at 830c8000+7f70 pppoe at 830bc000
> +1d80
> pppox at 83b0b000+55a ipt_REJECT at 830b4000+760 xt_TCPMSS at 83a09000+770
> ipt_LOG at 830b2000+17f0 xt_comment at 83b09000+1e0 xt_multiport at 83bfa000+4a0
> xt_mac at 830af000+260 xt_limit at 83aed000+400 iptable_mangle at 83b0c000
> +390
> iptable_filter at 83a26000+2c0 ip_tables at 83afc000+237d xt_tcpudp at 83ae5000
> +6b0
> x_tables at 83a50000+2ad5 ppp_async at 83aba000+1790 ppp_generic at 830a8000+4a42
> slhc at 839aa000+11eb ath9k at 83b20000+1395d ath9k_common at 839be000+5e9
> ath9k_hw at 83b80000+4f29b ath at 839b8000+3939 mac80211 at 83b40000+3cac4
> usbcore at 83aa0000+19564 usb_common at 83ae4000+232 nls_base at 839a8000+130e
> crc_ccitt at 839cd000+3fb cfg80211 at 83ac0000+22fb2 compat at 83a34000+2f0
> arc4 at 83a4b000+350 aes_generic at 83a38000+7509
> crypto_algapi at 83a10000+28a1 leds_gpio at 839da000+660
> gpio_button_hotplug at 8398b000+cc0
> <5>[ 0.000000] Linux version 3.2.9 (user at leesee-ThinkPad-R61e) (gcc
> version 4.6.3 20120201 (prerelease) (Linaro GCC 4.6-2012.02) ) #5 Sun Mar
> 11 16:20:22 EDT 2012
> <7>[ 0.000000] MyLoader: sysp=00000000, boardp=00000000,
> parts=ffffffff<7>[ 0.000000] free_area_init_node: node 0, pgdat
> 802edcf0, node_mem_map 81000000<6>[ 0.000000] Memory: 61636k/65536k
> available (2063k kernel code, 3900k reserved, 553k data, 192k init, 0k
> highmem)
> <5>[ 7.030000] JFFS2 notice: (1) jffs2_build_xattr_subsystem: complete
> building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref
> (0 dead, 0 orphan) found.
> <6>[ 7.050000] VFS: Mounted root (jffs2 filesystem) readonly on device
> 31:3.
> <6>[ 7.050000] Freeing unused kernel memory: 192k freed
> <7>[ 13.150000] Registered led device: ubnt:red:link1
> <7>[ 13.150000] Registered led device: ubnt:orange:link2
> <7>[ 13.150000] Registered led device: ubnt:green:link3
> <7>[ 13.150000] Registered led device: ubnt:green:link4 <6>[ 16.410000]
> eth0: link down
> <6>[ 17.010000] Compat-wireless backport release:
> compat-wireless-2012-02-27-1-r30877
> <6>[ 17.010000] Backport based on wireless-testing.git master-2012-02-27
> <6>[ 17.340000] cfg80211: Calling CRDA to update world regulatory domain
> <6>[ 17.720000] usbcore: registered new interface driver usbfs
> <6>[ 17.730000] usbcore: registered new interface driver hub
> <6>[ 17.740000] usbcore: registered new device driver usb
> <6>[ 18.500000] cfg80211: World regulatory domain updated:
> <6>[ 18.500000] cfg80211: (start_freq - end_freq @ bandwidth),
> (max_antenna_gain, max_eirp)
> <6>[ 18.510000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> <6>[ 18.520000] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300
> mBi, 2000 mBm)
> <6>[ 18.530000] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300
> mBi, 2000 mBm)
> <6>[ 18.540000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> <6>[ 18.540000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> <4>[ 19.280000] PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
> <7>[ 19.290000] PCI: Setting latency timer of device 0000:00:00.0 to 64
> <7>[ 19.290000] ath: EEPROM regdomain: 0x0
> <7>[ 19.290000] ath: EEPROM indicates default country code should be used
> <7>[ 19.290000] ath: doing EEPROM country->regdmn map search
> <7>[ 19.290000] ath: country maps to regdmn code: 0x3a
> <7>[ 19.290000] ath: Country alpha2 being used: US
> <7>[ 19.290000] ath: Regpair used: 0x3a
> <7>[ 19.300000] ieee80211 phy0: Selected rate control algorithm
> 'minstrel_ht'
> <7>[ 19.300000] Registered led device: ath9k-phy0
> <6>[ 19.300000] ieee80211 phy0: Atheros AR9280 Rev:2 mem=0xb0000000,
> irq=40
> <6>[ 19.310000] cfg80211: Calling CRDA for country: US
> <6>[ 19.370000] cfg80211: Regulatory domain changed to country: US
> <6>[ 19.380000] cfg80211: (start_freq - end_freq @ bandwidth),
> (max_antenna_gain, max_eirp)
> <6>[ 19.380000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300
> mBi, 2700 mBm)
> <6>[ 19.390000] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300
> mBi, 1700 mBm)
> <6>[ 19.400000] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> <6>[ 19.410000] cfg80211: (5490000 KHz - 5600000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> <6>[ 19.420000] cfg80211: (5650000 KHz - 5710000 KHz @ 40000 KHz), (300
> mBi, 2000 mBm)
> <6>[ 19.420000] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300
> mBi, 3000 mBm)
> <6>[ 19.510000] PPP generic driver version 2.4.2
> <6>[ 19.630000] ip_tables: (C) 2000-2006 Netfilter Core Team
> <6>[ 19.800000] NET: Registered protocol family 24
> <6>[ 19.930000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI)
> Driver
> <6>[ 20.050000] nf_conntrack version 0.5.0 (966 buckets, 3864 max)
> <6>[ 20.380000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> <6>[ 20.390000] ath79-ohci ath79-ohci: Atheros built-in OHCI controller
> <6>[ 20.390000] ath79-ohci ath79-ohci: new USB bus registered, assigned
> bus number 1
> <6>[ 20.400000] ath79-ohci ath79-ohci: irq 14, io mem 0x1b000000
> <6>[ 20.470000] hub 1-0:1.0: USB hub found
> <6>[ 20.470000] hub 1-0:1.0: 1 port detected
> <6>[ 22.210000] device eth0 entered promiscuous mode
> <6>[ 22.750000] eth0: link up (100Mbps/Full duplex)
> <6>[ 22.750000] br-lan: port 1(eth0) entering forwarding state
> <6>[ 22.760000] br-lan: port 1(eth0) entering forwarding state
> <6>[ 23.620000] device wlan0 entered promiscuous mode
> <6>[ 23.630000] br-lan: port 2(wlan0) entering forwarding state
> <6>[ 23.630000] br-lan: port 2(wlan0) entering forwarding state
> <6>[ 24.860000] device eth0 left promiscuous mode
> <6>[ 24.860000] br-lan: port 1(eth0) entering forwarding state
> <6>[ 25.280000] device eth0 entered promiscuous mode
> <6>[ 25.280000] br-lan: port 1(eth0) entering forwarding state
> <6>[ 25.290000] br-lan: port 1(eth0) entering forwarding state
> <1>[ 106.180000] CPU 0 Unable to handle kernel paging request at virtual
> address 00000004, epc == 83b29074, ra == 83b28fc8
> <4>[ 106.190000] Oops[#1]:
> <4>[ 106.190000] Cpu 0
> <4>[ 106.190000] $ 0 : 00000000 80320000 00000000 00000000
> <4>[ 106.190000] $ 4 : 00000000 83a74000 00000000 0000002f
> <4>[ 106.190000] $ 8 : 00000018 80163458 831736c0 00000001
> <4>[ 106.190000] $12 : 00000012 0012002b 00000001 00000050
> <4>[ 106.190000] $20 : 83b39a70 00000000 83a05b70 0000002f
> <4>[ 106.190000] $24 : 00000003 83b2151c
> <4>[ 106.190000] $28 : 802d4000 802d5b78 0000002f 83b28fc8
> <4>[ 106.190000] Hi : 00000005
> <4>[ 106.190000] Lo : 00000000
> <4>[ 106.190000] epc : 83b29074 ath_txchainmask_reduction+0x154/0x1170
> [ath9k]
> <4>[ 106.190000] Tainted: G O
> <4>[ 106.190000] ra : 83b28fc8 ath_txchainmask_reduction+0xa8/0x1170
> [ath9k]
> <4>[ 106.190000] Status: 1000d403 KERNEL EXL IE
> <4>[ 106.190000] Cause : 00800008
> <4>[ 106.190000] BadVA : 00000004
> <4>[ 106.190000] PrId : 00019374 (MIPS 24Kc)
> <4>[ 106.190000] Modules linked in: ohci_hcd nf_nat_irc nf_conntrack_irc
> nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_conntrack
> xt_CT xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4
> nf_conntrack ehci_hcd pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG xt_comment
> xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables
> xt_tcpudp x_tables ppp_async ppp_generic slhc ath9k(O) ath9k_common(O)
> ath9k_hw(O) ath(O) mac80211(O) usbcore usb_common nls_base crc_ccitt
> cfg80211(O) compat(O) arc4 aes_generic crypto_algapi leds_gpio
> gpio_button_hotplug(O)
> <4>[ 106.190000] Process swapper (pid: 0, threadinfo=802d4000,
> task=802d7c80, tls=00000000)
> <4>[ 106.190000] Stack : 00000027 228deb25 00215c15 f6c1c874 88030000
> 00000000 00010100 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000010 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] ...
> <4>[ 106.190000] Call Trace:
> <4>[ 106.190000] [<83b29074>] ath_txchainmask_reduction+0x154/0x1170
> [ath9k]
> <4>[ 106.190000] [<83b28fc8>] ath_txchainmask_reduction+0xa8/0x1170
> [ath9k]
> <4>[ 106.190000]
> <4>[ 106.190000]
> <4>[ 106.190000] Code: 00831821 70522002 8c630000 <8c630004> 00839021
> 8e2308ec 92420007 30630020 10600004
> <4>[ 106.400000] ---[ end trace 574d10138db4623f ]---
>
> ===================================
> Time: 1331498343.857098
> on+0x154/0x1170 [ath9k]
> <4>[ 106.190000] Tainted: G O
> <4>[ 106.190000] ra : 83b28fc8 ath_txchainmask_reduction+0xa8/0x1170
> [ath9k]
> <4>[ 106.190000] Status: 1000d403 KERNEL EXL IE
> <4>[ 106.190000] Cause : 00800008
> <4>[ 106.190000] BadVA : 00000004
> <4>[ 106.190000] PrId : 00019374 (MIPS 24Kc)
> <4>[ 106.190000] Modules linked in: ohci_hcd nf_nat_irc nf_conntrack_irc
> nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_conntrack
> xt_CT xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4
> nf_conntrack ehci_hcd pppoe pppox ipt_REJECT xt_TCPMSS ipt_LOG xt_comment
> xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables
> xt_tcpudp x_tables ppp_async ppp_generic slhc ath9k(O) ath9k_common(O)
> ath9k_hw(O) ath(O) mac80211(O) usbcore usb_common nls_base crc_ccitt
> cfg80211(O) compat(O) arc4 aes_generic crypto_algapi leds_gpio
> gpio_button_hotplug(O)
> <4>[ 106.190000] Process swapper (pid: 0, threadinfo=802d4000,
> task=802d7c80, tls=00000000)
> <4>[ 106.190000] Stack : 00000027 228deb25 00215c15 f6c1c874 88030000
> 00000000 00010100 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000010 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> <4>[ 106.190000] ...
> <4>[ 106.190000] Call Trace:
> <4>[ 106.190000] [<83b29074>] ath_txchainmask_reduction+0x154/0x1170
> [ath9k]
> <4>[ 106.190000] [<83b28fc8>] ath_txchainmask_reduction+0xa8/0x1170
> [ath9k]
> <4>[ 106.190000]
> <4>[ 106.190000]
> <4>[ 106.190000] Code: 00831821 70522002 8c630000 <8c630004> 00839021
> 8e2308ec 92420007 30630020 10600004
> <4>[ 106.400000] ---[ end trace 574d10138db4623f ]---
> <0>[ 106.410000] Kernel panic - not syncing: Fatal exception in interrupt
>
>
>
> David.
>
> ----- End forwarded message -----
>
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2012-03-13 2:13 [ath9k-devel] BUG: transmit buffer overflow? Thomas Pedersen
2012-03-13 12:28 ` David Fulgham
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