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	Thu, 23 Jan 2014 07:34:32 -0500
From: "Grumbach, Emmanuel" <emmanuel.grumbach@intel.com>
To: Petko Manolov <petkan@nucleusys.com>
CC: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
	"ilw@linux.intel.com" <ilw@linux.intel.com>,
	"Berg, Johannes" <johannes.berg@intel.com>
Subject: RE: iwlwifi crash with 3.13
Date: Thu, 23 Jan 2014 12:34:25 +0000
Message-ID: <0BA3FCBA62E2DC44AF3030971E174FB303D57008@HASMSX103.ger.corp.intel.com> (sfid-20140123_133436_018581_0DF45CC2)
References: <20140123091659.GE9077@localhost>
 <0BA3FCBA62E2DC44AF3030971E174FB303D56D70@HASMSX103.ger.corp.intel.com>
 <20140123123125.GA3424@localhost>
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> On 14-01-23 09:22:46, Grumbach, Emmanuel wrote:
> >
> > Can you share the very first iwlwifi lines of your dmesg? I'd like to check the
> fw version. Also - can you please update to latest firmware
> > from http://wireless.kernel.org/en/users/Drivers/iwlwifi. You can take
> iwlwifi-7260-ucode-22.1.7.0.tgz or iwlwifi-7260-ucode-22.15.8.0.tgz.
> 
> I used the latter firmware version with pretty much the same result.
> Attached you'll find complete (iwlwifi-related) dmesg.  BTW, after these
> dumps the controller successfully connected to 2.4GHz network.
> 

Ok - thanks.
Can I see the output of

cat /sys/kernel/debug/iwlwifi/*/iwlmvm/nvm_sw | hexdump | head -5

thanks.

> --- dmesg ---
> 
> Intel(R) Wireless WiFi driver for Linux, in-tree:
> Copyright(c) 2003-2013 Intel Corporation
> iwlwifi 0000:01:00.0: irq 62 for MSI/MSI-X
> iwlwifi 0000:01:00.0: loaded firmware version 22.15.8.0 op_mode iwlmvm
> iwlwifi 0000:01:00.0: Detected Intel(R) Wireless N 7260, REV=0x144
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
> --- snip ---
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: Microcode SW error detected.  Restarting 0x2000000.
> iwlwifi 0000:01:00.0: CSR values:
> iwlwifi 0000:01:00.0: (2nd byte of CSR_INT_COALESCING is
> CSR_INT_PERIODIC_REG)
> iwlwifi 0000:01:00.0:        CSR_HW_IF_CONFIG_REG: 0X00489204
> iwlwifi 0000:01:00.0:          CSR_INT_COALESCING: 0X8000ff40
> iwlwifi 0000:01:00.0:                     CSR_INT: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_INT_MASK: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_FH_INT_STATUS: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_GPIO_IN: 0X00000000
> iwlwifi 0000:01:00.0:                   CSR_RESET: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_GP_CNTRL: 0X080403c5
> iwlwifi 0000:01:00.0:                  CSR_HW_REV: 0X00000144
> iwlwifi 0000:01:00.0:              CSR_EEPROM_REG: 0X00000000
> iwlwifi 0000:01:00.0:               CSR_EEPROM_GP: 0X80000000
> iwlwifi 0000:01:00.0:              CSR_OTP_GP_REG: 0X803a0000
> iwlwifi 0000:01:00.0:                 CSR_GIO_REG: 0X00080044
> iwlwifi 0000:01:00.0:            CSR_GP_UCODE_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_GP_DRIVER_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_LED_REG: 0X00000060
> iwlwifi 0000:01:00.0:        CSR_DRAM_INT_TBL_REG: 0X88255090
> iwlwifi 0000:01:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
> iwlwifi 0000:01:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
> iwlwifi 0000:01:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
> iwlwifi 0000:01:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
> iwlwifi 0000:01:00.0: FH register values:
> iwlwifi 0000:01:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X2553ce00
> iwlwifi 0000:01:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X02553d40
> iwlwifi 0000:01:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000028
> iwlwifi 0000:01:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
> iwlwifi 0000:01:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
> iwlwifi 0000:01:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
> iwlwifi 0000:01:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV:
> 0X00000000
> iwlwifi 0000:01:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
> iwlwifi 0000:01:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
> iwlwifi 0000:01:00.0: FW error in SYNC CMD SCAN_REQUEST_CMD
> CPU: 2 PID: 6 Comm: kworker/u8:0 Not tainted 3.13.0 #3
> Hardware name: LENOVO 20266/Yoga2, BIOS 76CN27WW 09/17/2013
> Workqueue: phy0 ieee80211_scan_work
>  ffff88025533f218 ffffffff814e7e35 ffff88025533c000 ffffffffa0008755
>  ffff8802560efd10 0000001f00000000 0000000000000000 ffff8802560ca0d0
>  ffffffff810744f0 ffff8802560efc78 ffff8802560efc78 ffff8802560efd10
> Call Trace:
>  [<ffffffff814e7e35>] ? dump_stack+0x41/0x51
>  [<ffffffffa0008755>] ? iwl_trans_pcie_send_hcmd+0x525/0x560 [iwlwifi]
>  [<ffffffff810744f0>] ? prepare_to_wait_event+0xf0/0xf0
>  [<ffffffffa0034633>] ? iwl_mvm_send_cmd_status+0x33/0x120 [iwlmvm]
>  [<ffffffffa00396f5>] ? iwl_mvm_scan_request+0x355/0x430 [iwlmvm]
>  [<ffffffffa003074e>] ? iwl_mvm_mac_hw_scan+0x6e/0x80 [iwlmvm]
>  [<ffffffff814b503f>] ? __ieee80211_scan_completed+0x12f/0x1e0
>  [<ffffffff814b5afa>] ? ieee80211_scan_work+0xda/0x490
>  [<ffffffff810591ec>] ? process_one_work+0x13c/0x3c0
>  [<ffffffff81059d56>] ? worker_thread+0x116/0x3a0
>  [<ffffffff81059c40>] ? manage_workers.isra.30+0x280/0x280
>  [<ffffffff8105f041>] ? kthread+0xc1/0xe0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
>  [<ffffffff814ee4bc>] ? ret_from_fork+0x7c/0xb0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
> iwlwifi 0000:01:00.0: Scan failed! status 0x1 ret -5
> iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
> iwlwifi 0000:01:00.0: Status: 0x00000000, count: 6
> iwlwifi 0000:01:00.0: 0x000014F4 | ADVANCED_SYSASSERT
> iwlwifi 0000:01:00.0: 0x000002A0 | uPc
> iwlwifi 0000:01:00.0: 0x00000000 | branchlink1
> iwlwifi 0000:01:00.0: 0x00000C2A | branchlink2
> iwlwifi 0000:01:00.0: 0x00015ADC | interruptlink1
> iwlwifi 0000:01:00.0: 0x001B20FB | interruptlink2
> iwlwifi 0000:01:00.0: 0x00000175 | data1
> iwlwifi 0000:01:00.0: 0x00000024 | data2
> iwlwifi 0000:01:00.0: 0x000000E0 | data3
> iwlwifi 0000:01:00.0: 0x003523E9 | beacon time
> iwlwifi 0000:01:00.0: 0x000B9A37 | tsf low
> iwlwifi 0000:01:00.0: 0x00000000 | tsf hi
> iwlwifi 0000:01:00.0: 0x00000000 | time gp1
> iwlwifi 0000:01:00.0: 0x000B9A37 | time gp2
> iwlwifi 0000:01:00.0: 0x00000000 | time gp3
> iwlwifi 0000:01:00.0: 0x0004160F | uCode version
> iwlwifi 0000:01:00.0: 0x00000144 | hw version
> iwlwifi 0000:01:00.0: 0x00489204 | board version
> iwlwifi 0000:01:00.0: 0x091F0080 | hcmd
> iwlwifi 0000:01:00.0: 0x00022080 | isr0
> iwlwifi 0000:01:00.0: 0x00000000 | isr1
> iwlwifi 0000:01:00.0: 0x00000002 | isr2
> iwlwifi 0000:01:00.0: 0x0041FCC0 | isr3
> iwlwifi 0000:01:00.0: 0x00000001 | isr4
> iwlwifi 0000:01:00.0: 0x01000112 | isr_pref
> iwlwifi 0000:01:00.0: 0x00000000 | wait_event
> iwlwifi 0000:01:00.0: 0x00000080 | l2p_control
> iwlwifi 0000:01:00.0: 0x00018000 | l2p_duration
> iwlwifi 0000:01:00.0: 0x0000003F | l2p_mhvalid
> iwlwifi 0000:01:00.0: 0x00000000 | l2p_addr_match
> iwlwifi 0000:01:00.0: 0x00000005 | lmpm_pmg_sel
> iwlwifi 0000:01:00.0: 0x22121614 | timestamp
> iwlwifi 0000:01:00.0: 0x00002838 | flow_handler
> ieee80211 phy0: Hardware restart was requested
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: Microcode SW error detected.  Restarting 0x2000000.
> iwlwifi 0000:01:00.0: CSR values:
> iwlwifi 0000:01:00.0: (2nd byte of CSR_INT_COALESCING is
> CSR_INT_PERIODIC_REG)
> iwlwifi 0000:01:00.0:        CSR_HW_IF_CONFIG_REG: 0X00489204
> iwlwifi 0000:01:00.0:          CSR_INT_COALESCING: 0X8000ff40
> iwlwifi 0000:01:00.0:                     CSR_INT: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_INT_MASK: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_FH_INT_STATUS: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_GPIO_IN: 0X00000000
> iwlwifi 0000:01:00.0:                   CSR_RESET: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_GP_CNTRL: 0X080403c5
> iwlwifi 0000:01:00.0:                  CSR_HW_REV: 0X00000144
> iwlwifi 0000:01:00.0:              CSR_EEPROM_REG: 0X00000000
> iwlwifi 0000:01:00.0:               CSR_EEPROM_GP: 0X80000000
> iwlwifi 0000:01:00.0:              CSR_OTP_GP_REG: 0X803a0000
> iwlwifi 0000:01:00.0:                 CSR_GIO_REG: 0X00080044
> iwlwifi 0000:01:00.0:            CSR_GP_UCODE_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_GP_DRIVER_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_LED_REG: 0X00000060
> iwlwifi 0000:01:00.0:        CSR_DRAM_INT_TBL_REG: 0X88255090
> iwlwifi 0000:01:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
> iwlwifi 0000:01:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
> iwlwifi 0000:01:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
> iwlwifi 0000:01:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
> iwlwifi 0000:01:00.0: FH register values:
> iwlwifi 0000:01:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X2553ce00
> iwlwifi 0000:01:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X02553d40
> iwlwifi 0000:01:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000028
> iwlwifi 0000:01:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
> iwlwifi 0000:01:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
> iwlwifi 0000:01:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
> iwlwifi 0000:01:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV:
> 0X00000000
> iwlwifi 0000:01:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
> iwlwifi 0000:01:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
> iwlwifi 0000:01:00.0: FW error in SYNC CMD SCAN_REQUEST_CMD
> CPU: 2 PID: 6 Comm: kworker/u8:0 Not tainted 3.13.0 #3
> Hardware name: LENOVO 20266/Yoga2, BIOS 76CN27WW 09/17/2013
> Workqueue: phy0 ieee80211_scan_work
>  ffff88025533f218 ffffffff814e7e35 ffff88025533c000 ffffffffa0008755
>  ffff8802560efd10 0000001f00000000 0000000000000000 ffff8802560ca0d0
>  ffffffff810744f0 ffff8802560efc78 ffff8802560efc78 ffff8802560efd10
> Call Trace:
>  [<ffffffff814e7e35>] ? dump_stack+0x41/0x51
>  [<ffffffffa0008755>] ? iwl_trans_pcie_send_hcmd+0x525/0x560 [iwlwifi]
>  [<ffffffff810744f0>] ? prepare_to_wait_event+0xf0/0xf0
>  [<ffffffffa0034633>] ? iwl_mvm_send_cmd_status+0x33/0x120 [iwlmvm]
>  [<ffffffffa00396f5>] ? iwl_mvm_scan_request+0x355/0x430 [iwlmvm]
>  [<ffffffffa003074e>] ? iwl_mvm_mac_hw_scan+0x6e/0x80 [iwlmvm]
>  [<ffffffff814b503f>] ? __ieee80211_scan_completed+0x12f/0x1e0
>  [<ffffffff814b5afa>] ? ieee80211_scan_work+0xda/0x490
>  [<ffffffff810591ec>] ? process_one_work+0x13c/0x3c0
>  [<ffffffff81059d56>] ? worker_thread+0x116/0x3a0
>  [<ffffffff81059c40>] ? manage_workers.isra.30+0x280/0x280
>  [<ffffffff8105f041>] ? kthread+0xc1/0xe0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
>  [<ffffffff814ee4bc>] ? ret_from_fork+0x7c/0xb0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
> iwlwifi 0000:01:00.0: Scan failed! status 0x1 ret -5
> iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
> iwlwifi 0000:01:00.0: Status: 0x00000000, count: 6
> iwlwifi 0000:01:00.0: 0x000014F4 | ADVANCED_SYSASSERT
> iwlwifi 0000:01:00.0: 0x000002B0 | uPc
> iwlwifi 0000:01:00.0: 0x00000000 | branchlink1
> iwlwifi 0000:01:00.0: 0x00000C2A | branchlink2
> iwlwifi 0000:01:00.0: 0x00015ADC | interruptlink1
> iwlwifi 0000:01:00.0: 0x001B20FB | interruptlink2
> iwlwifi 0000:01:00.0: 0x00000175 | data1
> iwlwifi 0000:01:00.0: 0x00000024 | data2
> iwlwifi 0000:01:00.0: 0x000000E0 | data3
> iwlwifi 0000:01:00.0: 0x00352263 | beacon time
> iwlwifi 0000:01:00.0: 0x005732DD | tsf low
> iwlwifi 0000:01:00.0: 0x00000000 | tsf hi
> iwlwifi 0000:01:00.0: 0x00000000 | time gp1
> iwlwifi 0000:01:00.0: 0x005732DE | time gp2
> iwlwifi 0000:01:00.0: 0x00000000 | time gp3
> iwlwifi 0000:01:00.0: 0x0004160F | uCode version
> iwlwifi 0000:01:00.0: 0x00000144 | hw version
> iwlwifi 0000:01:00.0: 0x00489204 | board version
> iwlwifi 0000:01:00.0: 0x091F0080 | hcmd
> iwlwifi 0000:01:00.0: 0x00022080 | isr0
> iwlwifi 0000:01:00.0: 0x00000000 | isr1
> iwlwifi 0000:01:00.0: 0x00000002 | isr2
> iwlwifi 0000:01:00.0: 0x0041FCC0 | isr3
> iwlwifi 0000:01:00.0: 0x00000001 | isr4
> iwlwifi 0000:01:00.0: 0x01000112 | isr_pref
> iwlwifi 0000:01:00.0: 0x00000000 | wait_event
> iwlwifi 0000:01:00.0: 0x00000080 | l2p_control
> iwlwifi 0000:01:00.0: 0x00010000 | l2p_duration
> iwlwifi 0000:01:00.0: 0x0000003F | l2p_mhvalid
> iwlwifi 0000:01:00.0: 0x00000000 | l2p_addr_match
> iwlwifi 0000:01:00.0: 0x00000005 | lmpm_pmg_sel
> iwlwifi 0000:01:00.0: 0x22121614 | timestamp
> iwlwifi 0000:01:00.0: 0x00002838 | flow_handler
> ieee80211 phy0: Hardware restart was requested
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: Microcode SW error detected.  Restarting 0x2000000.
> iwlwifi 0000:01:00.0: CSR values:
> iwlwifi 0000:01:00.0: (2nd byte of CSR_INT_COALESCING is
> CSR_INT_PERIODIC_REG)
> iwlwifi 0000:01:00.0:        CSR_HW_IF_CONFIG_REG: 0X00489204
> iwlwifi 0000:01:00.0:          CSR_INT_COALESCING: 0X8000ff40
> iwlwifi 0000:01:00.0:                     CSR_INT: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_INT_MASK: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_FH_INT_STATUS: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_GPIO_IN: 0X00000000
> iwlwifi 0000:01:00.0:                   CSR_RESET: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_GP_CNTRL: 0X080403c5
> iwlwifi 0000:01:00.0:                  CSR_HW_REV: 0X00000144
> iwlwifi 0000:01:00.0:              CSR_EEPROM_REG: 0X00000000
> iwlwifi 0000:01:00.0:               CSR_EEPROM_GP: 0X80000000
> iwlwifi 0000:01:00.0:              CSR_OTP_GP_REG: 0X803a0000
> iwlwifi 0000:01:00.0:                 CSR_GIO_REG: 0X00080044
> iwlwifi 0000:01:00.0:            CSR_GP_UCODE_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_GP_DRIVER_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_LED_REG: 0X00000060
> iwlwifi 0000:01:00.0:        CSR_DRAM_INT_TBL_REG: 0X88255090
> iwlwifi 0000:01:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
> iwlwifi 0000:01:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
> iwlwifi 0000:01:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
> iwlwifi 0000:01:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
> iwlwifi 0000:01:00.0: FH register values:
> iwlwifi 0000:01:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X2553ce00
> iwlwifi 0000:01:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X02553d40
> iwlwifi 0000:01:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000028
> iwlwifi 0000:01:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
> iwlwifi 0000:01:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
> iwlwifi 0000:01:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
> iwlwifi 0000:01:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV:
> 0X00000000
> iwlwifi 0000:01:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
> iwlwifi 0000:01:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
> iwlwifi 0000:01:00.0: FW error in SYNC CMD SCAN_REQUEST_CMD
> CPU: 2 PID: 25 Comm: kworker/u8:1 Not tainted 3.13.0 #3
> Hardware name: LENOVO 20266/Yoga2, BIOS 76CN27WW 09/17/2013
> Workqueue: phy0 ieee80211_scan_work
>  ffff88025533f218 ffffffff814e7e35 ffff88025533c000 ffffffffa0008755
>  ffff8802561e5d10 0000001f00000000 0000000000000000 ffff8802561413b0
>  ffffffff810744f0 ffff8802561e5c78 ffff8802561e5c78 ffff8802561e5d10
> Call Trace:
>  [<ffffffff814e7e35>] ? dump_stack+0x41/0x51
>  [<ffffffffa0008755>] ? iwl_trans_pcie_send_hcmd+0x525/0x560 [iwlwifi]
>  [<ffffffff810744f0>] ? prepare_to_wait_event+0xf0/0xf0
>  [<ffffffffa0034633>] ? iwl_mvm_send_cmd_status+0x33/0x120 [iwlmvm]
>  [<ffffffffa00396f5>] ? iwl_mvm_scan_request+0x355/0x430 [iwlmvm]
>  [<ffffffffa003074e>] ? iwl_mvm_mac_hw_scan+0x6e/0x80 [iwlmvm]
>  [<ffffffff814b503f>] ? __ieee80211_scan_completed+0x12f/0x1e0
>  [<ffffffff814b5afa>] ? ieee80211_scan_work+0xda/0x490
>  [<ffffffff810591ec>] ? process_one_work+0x13c/0x3c0
>  [<ffffffff81059d56>] ? worker_thread+0x116/0x3a0
>  [<ffffffff81059c40>] ? manage_workers.isra.30+0x280/0x280
>  [<ffffffff8105f041>] ? kthread+0xc1/0xe0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
>  [<ffffffff814ee4bc>] ? ret_from_fork+0x7c/0xb0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
> iwlwifi 0000:01:00.0: Scan failed! status 0x1 ret -5
> iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
> iwlwifi 0000:01:00.0: Status: 0x00000000, count: 6
> iwlwifi 0000:01:00.0: 0x000014F4 | ADVANCED_SYSASSERT
> iwlwifi 0000:01:00.0: 0x000002B0 | uPc
> iwlwifi 0000:01:00.0: 0x00000000 | branchlink1
> iwlwifi 0000:01:00.0: 0x00000C2A | branchlink2
> iwlwifi 0000:01:00.0: 0x00015ADC | interruptlink1
> iwlwifi 0000:01:00.0: 0x001B20FB | interruptlink2
> iwlwifi 0000:01:00.0: 0x00000175 | data1
> iwlwifi 0000:01:00.0: 0x00000024 | data2
> iwlwifi 0000:01:00.0: 0x000000E0 | data3
> iwlwifi 0000:01:00.0: 0x0035223E | beacon time
> iwlwifi 0000:01:00.0: 0x0057260D | tsf low
> iwlwifi 0000:01:00.0: 0x00000000 | tsf hi
> iwlwifi 0000:01:00.0: 0x00000000 | time gp1
> iwlwifi 0000:01:00.0: 0x0057260D | time gp2
> iwlwifi 0000:01:00.0: 0x00000000 | time gp3
> iwlwifi 0000:01:00.0: 0x0004160F | uCode version
> iwlwifi 0000:01:00.0: 0x00000144 | hw version
> iwlwifi 0000:01:00.0: 0x00489204 | board version
> iwlwifi 0000:01:00.0: 0x091F0080 | hcmd
> iwlwifi 0000:01:00.0: 0x00022080 | isr0
> iwlwifi 0000:01:00.0: 0x00000000 | isr1
> iwlwifi 0000:01:00.0: 0x00000002 | isr2
> iwlwifi 0000:01:00.0: 0x0041FCC0 | isr3
> iwlwifi 0000:01:00.0: 0x00000001 | isr4
> iwlwifi 0000:01:00.0: 0x01000112 | isr_pref
> iwlwifi 0000:01:00.0: 0x00000000 | wait_event
> iwlwifi 0000:01:00.0: 0x00000080 | l2p_control
> iwlwifi 0000:01:00.0: 0x00010000 | l2p_duration
> iwlwifi 0000:01:00.0: 0x0000003F | l2p_mhvalid
> iwlwifi 0000:01:00.0: 0x00000000 | l2p_addr_match
> iwlwifi 0000:01:00.0: 0x00000005 | lmpm_pmg_sel
> iwlwifi 0000:01:00.0: 0x22121614 | timestamp
> iwlwifi 0000:01:00.0: 0x00002838 | flow_handler
> ieee80211 phy0: Hardware restart was requested
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: Microcode SW error detected.  Restarting 0x2000000.
> iwlwifi 0000:01:00.0: CSR values:
> iwlwifi 0000:01:00.0: (2nd byte of CSR_INT_COALESCING is
> CSR_INT_PERIODIC_REG)
> iwlwifi 0000:01:00.0:        CSR_HW_IF_CONFIG_REG: 0X00489204
> iwlwifi 0000:01:00.0:          CSR_INT_COALESCING: 0X8000ff40
> iwlwifi 0000:01:00.0:                     CSR_INT: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_INT_MASK: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_FH_INT_STATUS: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_GPIO_IN: 0X00000000
> iwlwifi 0000:01:00.0:                   CSR_RESET: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_GP_CNTRL: 0X080403c5
> iwlwifi 0000:01:00.0:                  CSR_HW_REV: 0X00000144
> iwlwifi 0000:01:00.0:              CSR_EEPROM_REG: 0X00000000
> iwlwifi 0000:01:00.0:               CSR_EEPROM_GP: 0X80000000
> iwlwifi 0000:01:00.0:              CSR_OTP_GP_REG: 0X803a0000
> iwlwifi 0000:01:00.0:                 CSR_GIO_REG: 0X00080044
> iwlwifi 0000:01:00.0:            CSR_GP_UCODE_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_GP_DRIVER_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_LED_REG: 0X00000060
> iwlwifi 0000:01:00.0:        CSR_DRAM_INT_TBL_REG: 0X88255090
> iwlwifi 0000:01:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
> iwlwifi 0000:01:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
> iwlwifi 0000:01:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
> iwlwifi 0000:01:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
> iwlwifi 0000:01:00.0: FH register values:
> iwlwifi 0000:01:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X2553ce00
> iwlwifi 0000:01:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X02553d40
> iwlwifi 0000:01:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000030
> iwlwifi 0000:01:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
> iwlwifi 0000:01:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
> iwlwifi 0000:01:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
> iwlwifi 0000:01:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV:
> 0X00000000
> iwlwifi 0000:01:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
> iwlwifi 0000:01:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
> iwlwifi 0000:01:00.0: FW error in SYNC CMD SCAN_REQUEST_CMD
> CPU: 2 PID: 25 Comm: kworker/u8:1 Not tainted 3.13.0 #3
> Hardware name: LENOVO 20266/Yoga2, BIOS 76CN27WW 09/17/2013
> Workqueue: phy0 ieee80211_scan_work
>  ffff88025533f218 ffffffff814e7e35 ffff88025533c000 ffffffffa0008755
>  ffff8802561e5d10 0000001f00000000 0000000000000000 ffff8802561413b0
>  ffffffff810744f0 ffff8802561e5c78 ffff8802561e5c78 ffff8802561e5d10
> Call Trace:
>  [<ffffffff814e7e35>] ? dump_stack+0x41/0x51
>  [<ffffffffa0008755>] ? iwl_trans_pcie_send_hcmd+0x525/0x560 [iwlwifi]
>  [<ffffffff810744f0>] ? prepare_to_wait_event+0xf0/0xf0
>  [<ffffffffa0034633>] ? iwl_mvm_send_cmd_status+0x33/0x120 [iwlmvm]
>  [<ffffffffa00396f5>] ? iwl_mvm_scan_request+0x355/0x430 [iwlmvm]
>  [<ffffffffa003074e>] ? iwl_mvm_mac_hw_scan+0x6e/0x80 [iwlmvm]
>  [<ffffffff814b503f>] ? __ieee80211_scan_completed+0x12f/0x1e0
>  [<ffffffff814b5afa>] ? ieee80211_scan_work+0xda/0x490
>  [<ffffffff810591ec>] ? process_one_work+0x13c/0x3c0
>  [<ffffffff81059d56>] ? worker_thread+0x116/0x3a0
>  [<ffffffff81059c40>] ? manage_workers.isra.30+0x280/0x280
>  [<ffffffff8105f041>] ? kthread+0xc1/0xe0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
>  [<ffffffff814ee4bc>] ? ret_from_fork+0x7c/0xb0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
> iwlwifi 0000:01:00.0: Scan failed! status 0x1 ret -5
> iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
> iwlwifi 0000:01:00.0: Status: 0x00000000, count: 6
> iwlwifi 0000:01:00.0: 0x000014F4 | ADVANCED_SYSASSERT
> iwlwifi 0000:01:00.0: 0x000002B0 | uPc
> iwlwifi 0000:01:00.0: 0x00000000 | branchlink1
> iwlwifi 0000:01:00.0: 0x00000C2A | branchlink2
> iwlwifi 0000:01:00.0: 0x00015ADC | interruptlink1
> iwlwifi 0000:01:00.0: 0x001B20FB | interruptlink2
> iwlwifi 0000:01:00.0: 0x00000175 | data1
> iwlwifi 0000:01:00.0: 0x00000024 | data2
> iwlwifi 0000:01:00.0: 0x000000E0 | data3
> iwlwifi 0000:01:00.0: 0x0035227F | beacon time
> iwlwifi 0000:01:00.0: 0x005733C4 | tsf low
> iwlwifi 0000:01:00.0: 0x00000000 | tsf hi
> iwlwifi 0000:01:00.0: 0x00000000 | time gp1
> iwlwifi 0000:01:00.0: 0x005733C4 | time gp2
> iwlwifi 0000:01:00.0: 0x00000000 | time gp3
> iwlwifi 0000:01:00.0: 0x0004160F | uCode version
> iwlwifi 0000:01:00.0: 0x00000144 | hw version
> iwlwifi 0000:01:00.0: 0x00489204 | board version
> iwlwifi 0000:01:00.0: 0x091F0080 | hcmd
> iwlwifi 0000:01:00.0: 0x00022080 | isr0
> iwlwifi 0000:01:00.0: 0x01000000 | isr1
> iwlwifi 0000:01:00.0: 0x00000002 | isr2
> iwlwifi 0000:01:00.0: 0x0041FCC0 | isr3
> iwlwifi 0000:01:00.0: 0x00000001 | isr4
> iwlwifi 0000:01:00.0: 0x01000112 | isr_pref
> iwlwifi 0000:01:00.0: 0x00000000 | wait_event
> iwlwifi 0000:01:00.0: 0x00000080 | l2p_control
> iwlwifi 0000:01:00.0: 0x00010000 | l2p_duration
> iwlwifi 0000:01:00.0: 0x0000003F | l2p_mhvalid
> iwlwifi 0000:01:00.0: 0x00000000 | l2p_addr_match
> iwlwifi 0000:01:00.0: 0x00000005 | lmpm_pmg_sel
> iwlwifi 0000:01:00.0: 0x22121614 | timestamp
> iwlwifi 0000:01:00.0: 0x00003038 | flow_handler
> ieee80211 phy0: Hardware restart was requested
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: Microcode SW error detected.  Restarting 0x2000000.
> iwlwifi 0000:01:00.0: CSR values:
> iwlwifi 0000:01:00.0: (2nd byte of CSR_INT_COALESCING is
> CSR_INT_PERIODIC_REG)
> iwlwifi 0000:01:00.0:        CSR_HW_IF_CONFIG_REG: 0X00489204
> iwlwifi 0000:01:00.0:          CSR_INT_COALESCING: 0X8000ff40
> iwlwifi 0000:01:00.0:                     CSR_INT: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_INT_MASK: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_FH_INT_STATUS: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_GPIO_IN: 0X00000000
> iwlwifi 0000:01:00.0:                   CSR_RESET: 0X00000000
> iwlwifi 0000:01:00.0:                CSR_GP_CNTRL: 0X080403c5
> iwlwifi 0000:01:00.0:                  CSR_HW_REV: 0X00000144
> iwlwifi 0000:01:00.0:              CSR_EEPROM_REG: 0X00000000
> iwlwifi 0000:01:00.0:               CSR_EEPROM_GP: 0X80000000
> iwlwifi 0000:01:00.0:              CSR_OTP_GP_REG: 0X803a0000
> iwlwifi 0000:01:00.0:                 CSR_GIO_REG: 0X00080044
> iwlwifi 0000:01:00.0:            CSR_GP_UCODE_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_GP_DRIVER_REG: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
> iwlwifi 0000:01:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
> iwlwifi 0000:01:00.0:                 CSR_LED_REG: 0X00000060
> iwlwifi 0000:01:00.0:        CSR_DRAM_INT_TBL_REG: 0X88255090
> iwlwifi 0000:01:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
> iwlwifi 0000:01:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
> iwlwifi 0000:01:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
> iwlwifi 0000:01:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
> iwlwifi 0000:01:00.0: FH register values:
> iwlwifi 0000:01:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X2553ce00
> iwlwifi 0000:01:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X02553d40
> iwlwifi 0000:01:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000028
> iwlwifi 0000:01:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
> iwlwifi 0000:01:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
> iwlwifi 0000:01:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
> iwlwifi 0000:01:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV:
> 0X00000000
> iwlwifi 0000:01:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
> iwlwifi 0000:01:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
> iwlwifi 0000:01:00.0: FW error in SYNC CMD SCAN_REQUEST_CMD
> CPU: 2 PID: 6 Comm: kworker/u8:0 Not tainted 3.13.0 #3
> Hardware name: LENOVO 20266/Yoga2, BIOS 76CN27WW 09/17/2013
> Workqueue: phy0 ieee80211_scan_work
>  ffff88025533f218 ffffffff814e7e35 ffff88025533c000 ffffffffa0008755
>  ffff8802560efd10 0000001f00000000 0000000000000000 ffff8802560ca0d0
>  ffffffff810744f0 ffff8802560efc78 ffff8802560efc78 ffff8802560efd10
> Call Trace:
>  [<ffffffff814e7e35>] ? dump_stack+0x41/0x51
>  [<ffffffffa0008755>] ? iwl_trans_pcie_send_hcmd+0x525/0x560 [iwlwifi]
>  [<ffffffff810744f0>] ? prepare_to_wait_event+0xf0/0xf0
>  [<ffffffffa0034633>] ? iwl_mvm_send_cmd_status+0x33/0x120 [iwlmvm]
>  [<ffffffffa00396f5>] ? iwl_mvm_scan_request+0x355/0x430 [iwlmvm]
>  [<ffffffffa003074e>] ? iwl_mvm_mac_hw_scan+0x6e/0x80 [iwlmvm]
>  [<ffffffff814b503f>] ? __ieee80211_scan_completed+0x12f/0x1e0
>  [<ffffffff814b5afa>] ? ieee80211_scan_work+0xda/0x490
>  [<ffffffff810591ec>] ? process_one_work+0x13c/0x3c0
>  [<ffffffff81059d56>] ? worker_thread+0x116/0x3a0
>  [<ffffffff81059c40>] ? manage_workers.isra.30+0x280/0x280
>  [<ffffffff8105f041>] ? kthread+0xc1/0xe0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
>  [<ffffffff814ee4bc>] ? ret_from_fork+0x7c/0xb0
>  [<ffffffff8105ef80>] ? kthread_create_on_node+0x180/0x180
> iwlwifi 0000:01:00.0: Scan failed! status 0x1 ret -5
> iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
> iwlwifi 0000:01:00.0: Status: 0x00000000, count: 6
> iwlwifi 0000:01:00.0: 0x000014F4 | ADVANCED_SYSASSERT
> iwlwifi 0000:01:00.0: 0x000002B0 | uPc
> iwlwifi 0000:01:00.0: 0x00000000 | branchlink1
> iwlwifi 0000:01:00.0: 0x00000C2A | branchlink2
> iwlwifi 0000:01:00.0: 0x00015ADC | interruptlink1
> iwlwifi 0000:01:00.0: 0x001B20FB | interruptlink2
> iwlwifi 0000:01:00.0: 0x00000175 | data1
> iwlwifi 0000:01:00.0: 0x00000024 | data2
> iwlwifi 0000:01:00.0: 0x000000E0 | data3
> iwlwifi 0000:01:00.0: 0x003522B5 | beacon time
> iwlwifi 0000:01:00.0: 0x00572B49 | tsf low
> iwlwifi 0000:01:00.0: 0x00000000 | tsf hi
> iwlwifi 0000:01:00.0: 0x00000000 | time gp1
> iwlwifi 0000:01:00.0: 0x00572B49 | time gp2
> iwlwifi 0000:01:00.0: 0x00000000 | time gp3
> iwlwifi 0000:01:00.0: 0x0004160F | uCode version
> iwlwifi 0000:01:00.0: 0x00000144 | hw version
> iwlwifi 0000:01:00.0: 0x00489204 | board version
> iwlwifi 0000:01:00.0: 0x091F0080 | hcmd
> iwlwifi 0000:01:00.0: 0x00022080 | isr0
> iwlwifi 0000:01:00.0: 0x00000000 | isr1
> iwlwifi 0000:01:00.0: 0x00000002 | isr2
> iwlwifi 0000:01:00.0: 0x0041FCC0 | isr3
> iwlwifi 0000:01:00.0: 0x00000001 | isr4
> iwlwifi 0000:01:00.0: 0x01000112 | isr_pref
> iwlwifi 0000:01:00.0: 0x00000000 | wait_event
> iwlwifi 0000:01:00.0: 0x00000080 | l2p_control
> iwlwifi 0000:01:00.0: 0x00010000 | l2p_duration
> iwlwifi 0000:01:00.0: 0x0000003F | l2p_mhvalid
> iwlwifi 0000:01:00.0: 0x00000000 | l2p_addr_match
> iwlwifi 0000:01:00.0: 0x00000005 | lmpm_pmg_sel
> iwlwifi 0000:01:00.0: 0x22121614 | timestamp
> iwlwifi 0000:01:00.0: 0x00002838 | flow_handler
> ieee80211 phy0: Hardware restart was requested
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
> iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S