Bug 98771

Summary:	iwlwifi: 7260: TFD queue hang
Product:	Drivers	Reporter:	donothingloop
Component:	network-wireless	Assignee:	drivers_network-wireless (drivers_network-wireless)
Status:	CLOSED CODE_FIX
Severity:	normal	CC:	donothingloop, ilw, linville
Priority:	P1
Hardware:	x86-64
OS:	Linux
See Also:	https://bugzilla.kernel.org/show_bug.cgi?id=95941
Kernel Version:	4.1.0-rc4-21-desktop+	Subsystem:
Regression:	No	Bisected commit-id:

Description donothingloop 2015-05-23 14:33:51 UTC

Hi,

I upgraded my kernel from "4.0.0-rc1-21-desktop+" to "4.1.0-rc4-21-desktop+" without any changes to my .config.

My wlan card seems to be unstable and I also cannot connect to WPA-Enterprise networks (which is more likely an incompatibility of my wpa_supplicant version).

In the kernel log every 20 seconds or so this message appears:

[   68.025207] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
[   68.025446] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
[   68.233715] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
[   68.233965] iwlwifi 0000:04:00.0: L1 Enabled - LTR Enabled
[   96.283795] iwlwifi 0000:04:00.0: Queue 2 stuck for 10000 ms.
[   96.283812] iwlwifi 0000:04:00.0: Current SW read_ptr 80 write_ptr 140
[   96.283845] iwl data: 00000000: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 00 00  ................
[   96.283869] iwlwifi 0000:04:00.0: FH TRBs(0) = 0x00000000
[   96.283893] iwlwifi 0000:04:00.0: FH TRBs(1) = 0x8010205f
[   96.283915] iwlwifi 0000:04:00.0: FH TRBs(2) = 0x00000000
[   96.283936] iwlwifi 0000:04:00.0: FH TRBs(3) = 0x80300003
[   96.283956] iwlwifi 0000:04:00.0: FH TRBs(4) = 0x00000000
[   96.283978] iwlwifi 0000:04:00.0: FH TRBs(5) = 0x00000000
[   96.283999] iwlwifi 0000:04:00.0: FH TRBs(6) = 0x00000000
[   96.284020] iwlwifi 0000:04:00.0: FH TRBs(7) = 0x00709051
[   96.284079] iwlwifi 0000:04:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [4,4]
[   96.284136] iwlwifi 0000:04:00.0: Q 1 is active and mapped to fifo 2 ra_tid 0x0000 [0,0]
[   96.284187] iwlwifi 0000:04:00.0: Q 2 is active and mapped to fifo 1 ra_tid 0x0000 [80,140]
[   96.284237] iwlwifi 0000:04:00.0: Q 3 is active and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284287] iwlwifi 0000:04:00.0: Q 4 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284338] iwlwifi 0000:04:00.0: Q 5 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284396] iwlwifi 0000:04:00.0: Q 6 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284446] iwlwifi 0000:04:00.0: Q 7 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284497] iwlwifi 0000:04:00.0: Q 8 is active and mapped to fifo 3 ra_tid 0x0000 [0,0]
[   96.284556] iwlwifi 0000:04:00.0: Q 9 is active and mapped to fifo 7 ra_tid 0x0000 [82,82]
[   96.284607] iwlwifi 0000:04:00.0: Q 10 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284657] iwlwifi 0000:04:00.0: Q 11 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284707] iwlwifi 0000:04:00.0: Q 12 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284757] iwlwifi 0000:04:00.0: Q 13 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284808] iwlwifi 0000:04:00.0: Q 14 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284858] iwlwifi 0000:04:00.0: Q 15 is active and mapped to fifo 5 ra_tid 0x0000 [0,0]
[   96.284908] iwlwifi 0000:04:00.0: Q 16 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.284959] iwlwifi 0000:04:00.0: Q 17 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.285009] iwlwifi 0000:04:00.0: Q 18 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.285059] iwlwifi 0000:04:00.0: Q 19 is inactive and mapped to fifo 0 ra_tid 0x0000 [0,0]
[   96.285110] iwlwifi 0000:04:00.0: Microcode SW error detected.  Restarting 0x2000000.
[   96.285113] iwlwifi 0000:04:00.0: CSR values:
[   96.285114] iwlwifi 0000:04:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
[   96.285119] iwlwifi 0000:04:00.0:        CSR_HW_IF_CONFIG_REG: 0X40489204
[   96.285133] iwlwifi 0000:04:00.0:          CSR_INT_COALESCING: 0X8000ff40
[   96.285144] iwlwifi 0000:04:00.0:                     CSR_INT: 0X00000000
[   96.285157] iwlwifi 0000:04:00.0:                CSR_INT_MASK: 0X00000000
[   96.285178] iwlwifi 0000:04:00.0:           CSR_FH_INT_STATUS: 0X00000000
[   96.285190] iwlwifi 0000:04:00.0:                 CSR_GPIO_IN: 0X00000000
[   96.285194] iwlwifi 0000:04:00.0:                   CSR_RESET: 0X00000000
[   96.285204] iwlwifi 0000:04:00.0:                CSR_GP_CNTRL: 0X080403c5
[   96.285215] iwlwifi 0000:04:00.0:                  CSR_HW_REV: 0X00000144
[   96.285225] iwlwifi 0000:04:00.0:              CSR_EEPROM_REG: 0X00000000
[   96.285235] iwlwifi 0000:04:00.0:               CSR_EEPROM_GP: 0X80000000
[   96.285245] iwlwifi 0000:04:00.0:              CSR_OTP_GP_REG: 0X803a0000
[   96.285255] iwlwifi 0000:04:00.0:                 CSR_GIO_REG: 0X00080040
[   96.285266] iwlwifi 0000:04:00.0:            CSR_GP_UCODE_REG: 0X00000000
[   96.285276] iwlwifi 0000:04:00.0:           CSR_GP_DRIVER_REG: 0X00000000
[   96.285286] iwlwifi 0000:04:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
[   96.285297] iwlwifi 0000:04:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
[   96.285307] iwlwifi 0000:04:00.0:                 CSR_LED_REG: 0X00000060
[   96.285317] iwlwifi 0000:04:00.0:        CSR_DRAM_INT_TBL_REG: 0X88214f8e
[   96.285327] iwlwifi 0000:04:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
[   96.285338] iwlwifi 0000:04:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
[   96.285348] iwlwifi 0000:04:00.0:      CSR_MONITOR_STATUS_REG: 0X3d0801bd
[   96.285358] iwlwifi 0000:04:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
[   96.285368] iwlwifi 0000:04:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0000
[   96.285369] iwlwifi 0000:04:00.0: FH register values:
[   96.285390] iwlwifi 0000:04:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X0c5c2c00
[   96.285401] iwlwifi 0000:04:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X00c5c2b0
[   96.285412] iwlwifi 0000:04:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X000000e8
[   96.285424] iwlwifi 0000:04:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X00801114
[   96.285435] iwlwifi 0000:04:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
[   96.285447] iwlwifi 0000:04:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X03030000
[   96.285458] iwlwifi 0000:04:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
[   96.285470] iwlwifi 0000:04:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
[   96.285481] iwlwifi 0000:04:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
[   96.285585] iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
[   96.285587] iwlwifi 0000:04:00.0: Status: 0x00000000, count: 6
[   96.285588] iwlwifi 0000:04:00.0: Loaded firmware version: 25.24.13.0
[   96.285590] iwlwifi 0000:04:00.0: 0x00000084 | NMI_INTERRUPT_UNKNOWN       
[   96.285591] iwlwifi 0000:04:00.0: 0x00000624 | uPc
[   96.285592] iwlwifi 0000:04:00.0: 0x00000000 | branchlink1
[   96.285593] iwlwifi 0000:04:00.0: 0x00000B2E | branchlink2
[   96.285595] iwlwifi 0000:04:00.0: 0x00016210 | interruptlink1
[   96.285596] iwlwifi 0000:04:00.0: 0x000001D8 | interruptlink2
[   96.285597] iwlwifi 0000:04:00.0: 0x00000000 | data1
[   96.285598] iwlwifi 0000:04:00.0: 0x00000080 | data2
[   96.285599] iwlwifi 0000:04:00.0: 0x07030000 | data3
[   96.285600] iwlwifi 0000:04:00.0: 0xFFC1CCEE | beacon time
[   96.285602] iwlwifi 0000:04:00.0: 0x6B3DAD12 | tsf low
[   96.285603] iwlwifi 0000:04:00.0: 0x000001AC | tsf hi
[   96.285604] iwlwifi 0000:04:00.0: 0x00000000 | time gp1
[   96.285605] iwlwifi 0000:04:00.0: 0x01AB8DC7 | time gp2
[   96.285606] iwlwifi 0000:04:00.0: 0x00000000 | time gp3
[   96.285607] iwlwifi 0000:04:00.0: 0x00041918 | uCode version
[   96.285608] iwlwifi 0000:04:00.0: 0x00000144 | hw version
[   96.285610] iwlwifi 0000:04:00.0: 0x40489204 | board version
[   96.285611] iwlwifi 0000:04:00.0: 0x0000001C | hcmd
[   96.285612] iwlwifi 0000:04:00.0: 0xA6D23042 | isr0
[   96.285613] iwlwifi 0000:04:00.0: 0x01018000 | isr1
[   96.285614] iwlwifi 0000:04:00.0: 0x0000000A | isr2
[   96.285615] iwlwifi 0000:04:00.0: 0x404220C6 | isr3
[   96.285616] iwlwifi 0000:04:00.0: 0x00000000 | isr4
[   96.285617] iwlwifi 0000:04:00.0: 0x00800110 | isr_pref
[   96.285620] iwlwifi 0000:04:00.0: 0x00000000 | wait_event
[   96.285621] iwlwifi 0000:04:00.0: 0x000000D4 | l2p_control
[   96.285622] iwlwifi 0000:04:00.0: 0x0001A030 | l2p_duration
[   96.285623] iwlwifi 0000:04:00.0: 0x00000007 | l2p_mhvalid
[   96.285624] iwlwifi 0000:04:00.0: 0x00000081 | l2p_addr_match
[   96.285625] iwlwifi 0000:04:00.0: 0x00000005 | lmpm_pmg_sel
[   96.285626] iwlwifi 0000:04:00.0: 0x09051509 | timestamp
[   96.285628] iwlwifi 0000:04:00.0: 0x0034E0F0 | flow_handler
[   96.285633] ieee80211 phy0: Hardware restart was requested
[   96.285644] ------------[ cut here ]------------

Comment 1 donothingloop 2015-05-23 14:36:40 UTC

Oh and I forgot to mention that I use the latest u-code version for the iwlwifi card, which is "iwlwifi-7260-13.ucode".

Comment 2 Emmanuel Grumbach 2015-05-24 18:42:50 UTC

Please make sure you are running the latest -13.ucode. It has had a few respin.

Comment 3 Emmanuel Grumbach 2015-05-24 18:49:04 UTC

I forgot to say. Please take the firmware from the git repository. It is usually more updated than the wiki.

Comment 4 Emmanuel Grumbach 2015-05-31 09:53:32 UTC

One more thing:

On what channel is your AP?
What is the channel width?

Comment 5 donothingloop 2015-05-31 11:17:02 UTC

I updated to the latest -13 ucode file from the git repo and the error was gone. Thanks for your time.