Re: [Ilw] drivers/net/wireless/iwlwifi/dvm/tx.c:456 iwlagn_tx_skb+0x6c5/0x883()

Sander Eikelenboom
2013-10-15T13:11:01Z

Tuesday, October 15, 2013, 12:52:04 PM, you wrote:

>>
>> Hi,
>>
>> I'm having a:
>>
>> 02:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev
>> 24)
>>
>> And i'm running into this warning on boot with a 3.11.2 and 3.12-rc5 kernel.
>>
>> [ 23.904950] ------------[ cut here ]------------
>> [ 23.904957] WARNING: CPU: 0 PID: 2531 at
>> drivers/net/wireless/iwlwifi/dvm/tx.c:456 iwlagn_tx_skb+0x6c5/0x883()

> Can you reproduce easily?
> If yes, please reproduce with debug parameters:
> modprobe iwlwifi debug=0xC0800000

> Also, please enable MAC80211_HT_DEBUG

> Thanks

It happens when starting hostapd:

[ 7.101116] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[ 7.110722] iwlwifi 0000:02:00.0: Radio type=0x2-0x1-0x0
[ 7.154478] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 9 on FIFO 7 WrPtr: 0
[ 7.157691] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 0 on FIFO 3 WrPtr: 0
[ 7.160812] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 1 on FIFO 2 WrPtr: 0
[ 7.164900] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 2 on FIFO 1 WrPtr: 0
[ 7.165019] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 3 on FIFO 0 WrPtr: 0
[ 7.165139] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 4 on FIFO 0 WrPtr: 0
[ 7.165258] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 5 on FIFO 4 WrPtr: 0
[ 7.165377] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 6 on FIFO 2 WrPtr: 0
[ 7.165495] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 7 on FIFO 5 WrPtr: 0
[ 7.165614] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 8 on FIFO 4 WrPtr: 0
[ 7.165733] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 10 on FIFO 5 WrPtr: 0
[ 7.404295] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S
[ 7.415368] iwlwifi 0000:02:00.0: Radio type=0x2-0x1-0x0
[ 7.462417] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 9 on FIFO 7 WrPtr: 0
[ 7.466588] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 0 on FIFO 3 WrPtr: 0
[ 7.470415] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 1 on FIFO 2 WrPtr: 0
[ 7.474144] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 2 on FIFO 1 WrPtr: 0
[ 7.477514] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 3 on FIFO 0 WrPtr: 0
[ 7.480843] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 4 on FIFO 0 WrPtr: 0
[ 7.484148] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 5 on FIFO 4 WrPtr: 0
[ 7.487432] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 6 on FIFO 2 WrPtr: 0
[ 7.490496] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 7 on FIFO 5 WrPtr: 0
[ 7.493534] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 8 on FIFO 4 WrPtr: 0
[ 7.496562] iwlwifi 0000:02:00.0: U iwl_trans_pcie_txq_enable Activate queue 10 on FIFO 5 WrPtr: 0
[ 7.542143] device wlan0 entered promiscuous mode
[ 7.544749] xen_bridge: port 2(wlan0) entered forwarding state
[ 7.546915] xen_bridge: port 2(wlan0) entered forwarding state
[ 7.548825] cfg80211: Pending regulatory request, waiting for it to be processed...
[ 7.552798] ------------[ cut here ]------------
[ 7.554821] WARNING: CPU: 1 PID: 2445 at drivers/net/wireless/iwlwifi/dvm/tx.c:456 iwlagn_tx_skb+0x776/0x979()
[ 7.554824] Modules linked in: acpi_cpufreq
[ 7.554827] CPU: 1 PID: 2445 Comm: hostapd Not tainted 3.12.0-rc5+ #1
[ 7.554828] Hardware name: /D53427RKE, BIOS RKPPT10H.86A.0017.2013.0425.1251 04/25/2013
[ 7.554831] 0000000000000000 0000000000000009 ffffffff818a8082 0000000000000000
[ 7.554833] ffffffff8105a4f2 0000000000000000 ffffffff815f440a ffff8800d6df1c80
[ 7.554835] ffff8800d6cb1790 ffff8800d6df1c80 0000000000000007 0000000000000000
[ 7.554835] Call Trace:
[ 7.554842] [<ffffffff818a8082>] ? dump_stack+0x41/0x51
[ 7.554845] [<ffffffff8105a4f2>] ? warn_slowpath_common+0x78/0x90
[ 7.554850] [<ffffffff815f440a>] ? iwlagn_tx_skb+0x776/0x979
[ 7.554852] [<ffffffff815f440a>] ? iwlagn_tx_skb+0x776/0x979
[ 7.554855] [<ffffffff815f2407>] ? iwlagn_mac_tx+0x19/0x30
[ 7.554858] [<ffffffff8187a259>] ? __ieee80211_tx+0x226/0x29b
[ 7.554860] [<ffffffff8187bcd1>] ? ieee80211_tx+0xa6/0xb5
[ 7.554865] [<ffffffff8187bf9f>] ? ieee80211_monitor_start_xmit+0x1e9/0x204
[ 7.554867] [<ffffffff8172e1eb>] ? dev_hard_start_xmit+0x271/0x3ec
[ 7.554871] [<ffffffff81746538>] ? sch_direct_xmit+0x66/0x164
[ 7.554873] [<ffffffff8172e54b>] ? dev_queue_xmit+0x1e5/0x3c8
[ 7.554876] [<ffffffff8180bfe6>] ? packet_sendmsg+0xac5/0xb3d
[ 7.554881] [<ffffffff8171ad95>] ? sock_sendmsg+0x37/0x52
[ 7.554884] [<ffffffff810f9e0c>] ? __do_fault+0x338/0x36b
[ 7.554886] [<ffffffff81724bac>] ? verify_iovec+0x44/0x94
[ 7.554889] [<ffffffff8171b1ef>] ? ___sys_sendmsg+0x1f1/0x283
[ 7.554893] [<ffffffff81140a73>] ? __inode_wait_for_writeback+0x67/0xae
[ 7.554895] [<ffffffff8111735e>] ? __cache_free.isra.46+0x178/0x187
[ 7.554897] [<ffffffff811173b1>] ? kmem_cache_free+0x44/0x84
[ 7.554900] [<ffffffff81132c22>] ? dentry_kill+0x13d/0x149
[ 7.554902] [<ffffffff81132f6f>] ? dput+0xe5/0xef
[ 7.554905] [<ffffffff81136e04>] ? fget_light+0x2e/0x7c
[ 7.554908] [<ffffffff8171c1ee>] ? __sys_sendmsg+0x39/0x57
[ 7.554911] [<ffffffff818b5e39>] ? system_call_fastpath+0x16/0x1b
[ 7.554912] ---[ end trace beb2b581b91027a7 ]---
[ 7.554917] iwlwifi 0000:02:00.0: I iwlagn_tx_skb TX to [14|8] Q:7 - seq: 0x0
[ 7.555036] device wlan0 left promiscuous mode
[ 7.555042] xen_bridge: port 2(wlan0) entered disabled state
[ 7.557861] iwlwifi 0000:02:00.0: I iwl_trans_pcie_reclaim [Q 7] 0 -> 1 (1)
[ 7.557865] iwlwifi 0000:02:00.0: I iwlagn_rx_reply_tx TXQ 7 status SUCCESS (0x00000201)
[ 7.557867] iwlwifi 0000:02:00.0: I iwlagn_rx_reply_tx initial_rate 0x820a retries 0, idx=0 ssn=1 seq_ctl=0x0
[ 7.626274] iwlwifi 0000:02:00.0: I iwl_pcie_txq_inc_wr_ptr Q:9 WR: 0x23
[ 7.670694] iwlwifi 0000:02:00.0: I iwl_pcie_txq_inc_wr_ptr Q:9 WR: 0x24
[ 7.673864] iwlwifi 0000:02:00.0: I iwl_pcie_txq_inc_wr_ptr Q:9 WR: 0x25
[ 7.677083] iwlwifi 0000:02:00.0: I iwl_pcie_txq_inc_wr_ptr Q:9 WR: 0x26
[ 7.681410] iwlwifi 0000:02:00.0: I iwl_pcie_txq_inc_wr_ptr Q:9 WR: 0x27
[ 7.684761] iwlwifi 0000:02:00.0: I iwl_pcie_txq_inc_wr_ptr Q:9 WR: 0x28
[ 7.686906] iwlwifi 0000:02:00.0: I iwl_pcie_txq_unmap Q 9 Free 39