#10414 NORM Not Tri: 2.6.35: occasional transmit queue timeout

Zarro Boogs per Child bugtracker at laptop.org
Tue Oct 26 17:19:03 EDT 2010 

#10414: 2.6.35: occasional transmit queue timeout
--------------------------+-------------------------------------------------
 Reporter:  sascha_silbe  |                 Owner:  dsaxena                           
     Type:  defect        |                Status:  new                               
 Priority:  normal        |             Milestone:  Not Triaged                       
Component:  kernel        |               Version:  Development source as of this date
 Keywords:  libertas      |           Next_action:  never set                         
 Verified:  0             |   Deployment_affected:                                    
Blockedby:                |              Blocking:                                    
--------------------------+-------------------------------------------------
 WLAN transmission times out occasionally on an XO-1.5 running olpc-2.6.35:

 {{{
 Oct 26 20:55:57 xo15-sascha NetworkManager[2248]: <info> Activation
 (wlan3) Stage 5 of 5 (IP Configure Commit) complete.
 [...]
 Oct 26 20:56:07 xo15-sascha kernel: [  101.670117] sixxs: no IPv6 routers
 present
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050097] ------------[ cut here
 ]------------
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050130] WARNING: at
 net/sched/sch_generic.c:258 dev_watchdog+0x102/0x17c()
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050141] Hardware name: XO
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050151] NETDEV WATCHDOG: wlan3
 (libertas_sdio): transmit queue 0 timed out
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050161] Modules linked in: sco
 bridge stp llc bnep l2cap xt_tcpudp bluetooth iptable_filter ip_tables
 x_tables uinput tun sit
 tunnel4 fuse
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050241] Pid: 0, comm: swapper
 Not tainted 2.6.35.4-xo1.5-1-00092-g1623b31 #15
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050252] Call Trace:
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050272]  [<b04237ad>]
 warn_slowpath_common+0x6a/0x7f
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050288]  [<b0771e43>] ?
 dev_watchdog+0x102/0x17c
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050304]  [<b0423835>]
 warn_slowpath_fmt+0x2b/0x2f
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050320]  [<b0771e43>]
 dev_watchdog+0x102/0x17c
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050343]  [<b0842efb>] ?
 _raw_spin_unlock_irqrestore+0x2e/0x31
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050364]  [<b05ff68c>] ?
 debug_object_deactivate+0xa0/0xc8
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050381]  [<b0435285>] ?
 __queue_work+0x2f/0x34
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050400]  [<b0845350>] ?
 sub_preempt_count+0x9/0x8e
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050419]  [<b042db85>]
 run_timer_softirq+0x1ca/0x289
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050435]  [<b0771d41>] ?
 dev_watchdog+0x0/0x17c
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050454]  [<b04288e1>]
 __do_softirq+0xb2/0x175
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050471]  [<b042882f>] ?
 __do_softirq+0x0/0x175
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050481]  <IRQ>  [<b04287a3>] ?
 irq_exit+0x30/0x6c
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050508]  [<b0403581>] ?
 do_IRQ+0x7d/0x90
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050524]  [<b0402ca9>] ?
 common_interrupt+0x29/0x30
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050548]  [<b065832e>] ?
 acpi_idle_enter_bm+0x213/0x247
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050572]  [<b070d526>] ?
 cpuidle_idle_call+0x68/0xe2
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050586]  [<b04019fb>] ?
 cpu_idle+0x3b/0x68
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050606]  [<b0839287>] ?
 rest_init+0xaf/0xb2
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050624]  [<b0a76775>] ?
 start_kernel+0x2c1/0x2c6
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050639]  [<b0a760b1>] ?
 i386_start_kernel+0xb1/0xb8
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050651] ---[ end trace
 486eddaf6ba1bd70 ]---
 Oct 26 20:56:18 xo15-sascha kernel: [  112.050661] libertas: tx watch dog
 timeout
 Oct 26 20:56:58 xo15-sascha kernel: [  152.050099] libertas: tx watch dog
 timeout
 Oct 26 20:57:58 xo15-sascha kernel: [  212.050098] libertas: tx watch dog
 timeout
 [...]
 Oct 26 21:00:58 xo15-sascha kernel: [  392.010098] libertas: tx watch dog
 timeout
 Oct 26 21:08:58 xo15-sascha kernel: [  872.010106] libertas: tx watch dog
 timeout
 Oct 26 21:10:58 xo15-sascha kernel: [  992.010103] libertas: tx watch dog
 timeout
 Oct 26 21:12:58 xo15-sascha kernel: [ 1112.010104] libertas: tx watch dog
 timeout
 Oct 26 21:14:52 xo15-sascha wpa_supplicant[2259]: CTRL-EVENT-DISCONNECTED
 - Disconnect event - remove keys
 [...]
 Oct 26 22:37:52 xo15-sascha NetworkManager[2248]: <info> (wlan3):
 supplicant connection state:  group handshake -> completed
 Oct 26 22:38:58 xo15-sascha kernel: [ 6272.010103] libertas: tx watch dog
 timeout
 Oct 26 22:42:58 xo15-sascha kernel: [ 6512.010097] libertas: tx watch dog
 timeout
 Oct 26 22:46:58 xo15-sascha kernel: [ 6752.010099] libertas: tx watch dog
 timeout
 Oct 26 22:48:58 xo15-sascha kernel: [ 6872.010103] libertas: tx watch dog
 timeout
 Oct 26 22:50:58 xo15-sascha kernel: [ 6992.010102] libertas: tx watch dog
 timeout
 Oct 26 22:52:58 xo15-sascha kernel: [ 7112.010096] libertas: tx watch dog
 timeout
 Oct 26 22:54:58 xo15-sascha kernel: [ 7232.010105] libertas: tx watch dog
 timeout
 Oct 26 22:56:58 xo15-sascha kernel: [ 7352.010099] libertas: tx watch dog
 timeout
 Oct 26 22:58:58 xo15-sascha kernel: [ 7472.010106] libertas: tx watch dog
 timeout
 }}}

 I'm running Debian Squeeze; Cerlyn has encountered the same on F14.
 Happened only once so far; no recipe for reproducing the issue found yet.

-- 
Ticket URL: <http://dev.laptop.org/ticket/10414>
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