90751 – microcode errors with Intel Advanced-N 6235

Bug 90751 - microcode errors with Intel Advanced-N 6235

Summary: microcode errors with Intel Advanced-N 6235

Status:	CLOSED WILL_NOT_FIX

Alias:	None

Product:	Drivers
Classification:	Unclassified
Component:	network-wireless (show other bugs)
Hardware:	All Linux

Importance:	P1 normal
Assignee:	drivers_network-wireless@kernel-bugs.osdl.org

URL:
Keywords:

Depends on:
Blocks:

Reported:	2015-01-04 02:58 UTC by Dustin J. Mitchell [:dustin]
Modified:	2015-01-05 17:40 UTC (History)
CC List:	2 users (show)

See Also:
Kernel Version:	3.17.7
Subsystem:
Regression:	No
Bisected commit-id:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Description Dustin J. Mitchell [:dustin] 2015-01-04 02:58:17 UTC

The best I can determine for reproducing this is that it seems to be related to large (1300+ byte, but under the link MTU of 1500) traffic and/or IPv6.  Aside from the microcode errors, I'm seeing failures of IPv6 PTMU discovery (kernel seems to ignore ICMPv6 type 2 messages).

iwlwifi 0000:02:00.0: Microcode SW error detected.  Restarting 0x2000000.
iwlwifi 0000:02:00.0: CSR values:
iwlwifi 0000:02:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
iwlwifi 0000:02:00.0:        CSR_HW_IF_CONFIG_REG: 0X00484b00
iwlwifi 0000:02:00.0:          CSR_INT_COALESCING: 0X0000ff40
iwlwifi 0000:02:00.0:                     CSR_INT: 0X00000000
iwlwifi 0000:02:00.0:                CSR_INT_MASK: 0X00000000
iwlwifi 0000:02:00.0:           CSR_FH_INT_STATUS: 0X00000000
iwlwifi 0000:02:00.0:                 CSR_GPIO_IN: 0X0000003c
iwlwifi 0000:02:00.0:                   CSR_RESET: 0X00000000
iwlwifi 0000:02:00.0:                CSR_GP_CNTRL: 0X080403c5
iwlwifi 0000:02:00.0:                  CSR_HW_REV: 0X000000b0
iwlwifi 0000:02:00.0:              CSR_EEPROM_REG: 0Xf3f10ffd
iwlwifi 0000:02:00.0:               CSR_EEPROM_GP: 0X90000801
iwlwifi 0000:02:00.0:              CSR_OTP_GP_REG: 0X00030001
iwlwifi 0000:02:00.0:                 CSR_GIO_REG: 0X00080044
iwlwifi 0000:02:00.0:            CSR_GP_UCODE_REG: 0X00006f0f
iwlwifi 0000:02:00.0:           CSR_GP_DRIVER_REG: 0X00000000
iwlwifi 0000:02:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
iwlwifi 0000:02:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
iwlwifi 0000:02:00.0:                 CSR_LED_REG: 0X00000060
iwlwifi 0000:02:00.0:        CSR_DRAM_INT_TBL_REG: 0X880daecd
iwlwifi 0000:02:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
iwlwifi 0000:02:00.0:             CSR_ANA_PLL_CFG: 0X00000000
iwlwifi 0000:02:00.0:      CSR_MONITOR_STATUS_REG: 0X43f7ff57
iwlwifi 0000:02:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
iwlwifi 0000:02:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0000
iwlwifi 0000:02:00.0: FH register values:
iwlwifi 0000:02:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X206a3b00
iwlwifi 0000:02:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X0206a880
iwlwifi 0000:02:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X000000e8
iwlwifi 0000:02:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
iwlwifi 0000:02:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
iwlwifi 0000:02:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
iwlwifi 0000:02:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
iwlwifi 0000:02:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
iwlwifi 0000:02:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
iwlwifi 0000:02:00.0: Loaded firmware version: 18.168.6.1
iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
iwlwifi 0000:02:00.0: Status: 0x000002CC, count: 6
iwlwifi 0000:02:00.0: 0x0000198A | ADVANCED_SYSASSERT              
iwlwifi 0000:02:00.0: 0x00015920 | uPc 
iwlwifi 0000:02:00.0: 0x00015910 | branchlink1
iwlwifi 0000:02:00.0: 0x00015910 | branchlink2
iwlwifi 0000:02:00.0: 0x0000DBEA | interruptlink1
iwlwifi 0000:02:00.0: 0x00000000 | interruptlink2
iwlwifi 0000:02:00.0: 0x000001C3 | data1
iwlwifi 0000:02:00.0: 0x00000000 | data2
iwlwifi 0000:02:00.0: 0x000001DC | line
iwlwifi 0000:02:00.0: 0xBB006C9C | beacon time
iwlwifi 0000:02:00.0: 0xC8AFB364 | tsf low 
iwlwifi 0000:02:00.0: 0x00000007 | tsf hi
iwlwifi 0000:02:00.0: 0x00000000 | time gp1 
iwlwifi 0000:02:00.0: 0x55D3EFC6 | time gp2 
iwlwifi 0000:02:00.0: 0x00000000 | time gp3 
iwlwifi 0000:02:00.0: 0x754312A8 | uCode version
iwlwifi 0000:02:00.0: 0x000000B0 | hw version
iwlwifi 0000:02:00.0: 0x00484B00 | board version
iwlwifi 0000:02:00.0: 0x0000001C | hcmd
iwlwifi 0000:02:00.0: 0x2F963840 | isr0
iwlwifi 0000:02:00.0: 0x1189F800 | isr1
iwlwifi 0000:02:00.0: 0x00000E02 | isr2
iwlwifi 0000:02:00.0: 0x0147FCC3 | isr3
iwlwifi 0000:02:00.0: 0x00000000 | isr4
iwlwifi 0000:02:00.0: 0x00000110 | isr_pref
iwlwifi 0000:02:00.0: 0x000260A4 | wait_event
iwlwifi 0000:02:00.0: 0x00000040 | l2p_control
iwlwifi 0000:02:00.0: 0x00000000 | l2p_duration
iwlwifi 0000:02:00.0: 0x0000003F | l2p_mhvalid
iwlwifi 0000:02:00.0: 0x00A00200 | l2p_addr_match
iwlwifi 0000:02:00.0: 0x00000005 | lmpm_pmg_sel
iwlwifi 0000:02:00.0: 0x13011136 | timestamp
iwlwifi 0000:02:00.0: 0x0000E8F8 | flow_handler
iwlwifi 0000:02:00.0: Start IWL Event Log Dump: nothing in log 
iwlwifi 0000:02:00.0: Fw not loaded - dropping CMD: 1e
iwlwifi 0000:02:00.0: flush request fail

02:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24)
        Subsystem: Intel Corporation Centrino Advanced-N 6235 AGN
        Flags: bus master, fast devsel, latency 0, IRQ 27
        Memory at f7c00000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [c8] Power Management version 3
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [e0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Device Serial Number 80-00-0b-ff-ff-63-69-88
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi

$ dmesg | grep iwlwifi
[   13.829136] iwlwifi 0000:02:00.0: enabling device (0000 -> 0002)
[   13.829232] iwlwifi 0000:02:00.0: can't disable ASPM; OS doesn't have ASPM control
[   13.829312] iwlwifi 0000:02:00.0: irq 27 for MSI/MSI-X
[   13.964782] iwlwifi 0000:02:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
[   14.079283] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEBUG enabled
[   14.079289] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[   14.079292] iwlwifi 0000:02:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
[   14.079296] iwlwifi 0000:02:00.0: Detected Intel(R) Centrino(R) Advanced-N 6235 AGN, REV=0xB0
[   14.079348] iwlwifi 0000:02:00.0: L1 Disabled - LTR Disabled
[   14.143414] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0
[   15.522296] iwlwifi 0000:02:00.0: L1 Disabled - LTR Disabled
[   15.529133] iwlwifi 0000:02:00.0: Radio type=0x2-0x1-0x0
[   15.800384] iwlwifi 0000:02:00.0: L1 Disabled - LTR Disabled
[   15.807188] iwlwifi 0000:02:00.0: Radio type=0x2-0x1-0x0

wlp2s0    IEEE 802.11abg  ESSID:"DUSTIN-GUEST"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:26:B8:49:E1:7F   
          Bit Rate=48 Mb/s   Tx-Power=15 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=49/70  Signal level=-61 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:217  Invalid misc:33871   Missed beacon:0

(statistics from iwconfig are after a reboot).

Comment 1 Emmanuel Grumbach 2015-01-05 15:41:29 UTC

unfortunately, we don't fix firmware issues for these devices.

Comment 2 Dustin J. Mitchell [:dustin] 2015-01-05 16:35:58 UTC

Is the device unsupported?  Or am I just in the wrong place (not a kernel bug)?  I was following the instructions at http://wireless.kernel.org/en/users/Drivers/iwlwifi

Comment 3 Dustin J. Mitchell [:dustin] 2015-01-05 16:50:40 UTC

Also, the device is listed as currently supported for nuc's at
  http://www.intel.com/support/motherboards/desktop/sb/CS-033763.htm

Comment 4 Emmanuel Grumbach 2015-01-05 17:04:25 UTC

this device has driver support and not firmware support.
You are not at the wrong place, it is just that unfortunately, Intel does not provide support for firmware bugs on these devices.
Driver bugs will still be handled.

Comment 5 Dustin J. Mitchell [:dustin] 2015-01-05 17:40:35 UTC

Thanks -- I'll RMA the card.

Note You need to log in before you can comment on or make changes to this bug.