I am seeing the same error messages in my log as the OP: [ 3336.284786] iwlagn 0000:01:00.0: Microcode SW error detected. Restarting 0x2000000. [ 3336.284810] iwlagn 0000:01:00.0: Loaded firmware version: 17.168.5.2 build 35905 [ 3336.284904] iwlagn 0000:01:00.0: Start IWL Error Log Dump: [ 3336.284915] iwlagn 0000:01:00.0: Status: 0x0002B2E4, count: 6 [ 3336.285158] iwlagn 0000:01:00.0: Desc Time data1 data2 line [ 3336.285170] iwlagn 0000:01:00.0: ADVANCED_SYSASSERT (0x1BD8) 0299830228 0x00000258 0x000000C8 199 [ 3336.285182] iwlagn 0000:01:00.0: pc blink1 blink2 ilink1 ilink2 hcmd [ 3336.285195] iwlagn 0000:01:00.0: 0x05FBC 0x05F1E 0x05F1E 0x0DC1A 0x00000 0x9A90091 [ 3336.285206] iwlagn 0000:01:00.0: CSR values: [ 3336.285216] iwlagn 0000:01:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG) [ 3336.285258] iwlagn 0000:01:00.0: CSR_HW_IF_CONFIG_REG: 0X00c80303 [ 3336.285296] iwlagn 0000:01:00.0: CSR_INT_COALESCING: 0X0000ff40 [ 3336.285334] iwlagn 0000:01:00.0: CSR_INT: 0X00000000 [ 3336.285371] iwlagn 0000:01:00.0: CSR_INT_MASK: 0X00000000 [ 3336.285407] iwlagn 0000:01:00.0: CSR_FH_INT_STATUS: 0X00000000 [ 3336.285442] iwlagn 0000:01:00.0: CSR_GPIO_IN: 0X0000003c [ 3336.285478] iwlagn 0000:01:00.0: CSR_RESET: 0X00000000 [ 3336.285515] iwlagn 0000:01:00.0: CSR_GP_CNTRL: 0X080403c5 [ 3336.285552] iwlagn 0000:01:00.0: CSR_HW_REV: 0X000000b0 [ 3336.285588] iwlagn 0000:01:00.0: CSR_EEPROM_REG: 0X88160ffd [ 3336.285625] iwlagn 0000:01:00.0: CSR_EEPROM_GP: 0X90000801 [ 3336.285661] iwlagn 0000:01:00.0: CSR_OTP_GP_REG: 0X00030001 [ 3336.285696] iwlagn 0000:01:00.0: CSR_GIO_REG: 0X00080042 [ 3336.285732] iwlagn 0000:01:00.0: CSR_GP_UCODE_REG: 0X000063c1 [ 3336.285769] iwlagn 0000:01:00.0: CSR_GP_DRIVER_REG: 0X00000000 [ 3336.285803] iwlagn 0000:01:00.0: CSR_UCODE_DRV_GP1: 0X00000000 [ 3336.285838] iwlagn 0000:01:00.0: CSR_UCODE_DRV_GP2: 0X00000000 [ 3336.285875] iwlagn 0000:01:00.0: CSR_LED_REG: 0X00000058 [ 3336.285911] iwlagn 0000:01:00.0: CSR_DRAM_INT_TBL_REG: 0X881b20dc [ 3336.285948] iwlagn 0000:01:00.0: CSR_GIO_CHICKEN_BITS: 0X27800200 [ 3336.285984] iwlagn 0000:01:00.0: CSR_ANA_PLL_CFG: 0X00000000 [ 3336.286023] iwlagn 0000:01:00.0: CSR_HW_REV_WA_REG: 0X0001001a [ 3336.286058] iwlagn 0000:01:00.0: CSR_DBG_HPET_MEM_REG: 0Xffff0000 [ 3336.286067] iwlagn 0000:01:00.0: FH register values: [ 3336.286145] iwlagn 0000:01:00.0: FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X1a241f00 [ 3336.286225] iwlagn 0000:01:00.0: FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X01b36ba0 [ 3336.286316] iwlagn 0000:01:00.0: FH_RSCSR_CHNL0_WPTR: 0X00000038 [ 3336.286406] iwlagn 0000:01:00.0: FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80819104 [ 3336.286497] iwlagn 0000:01:00.0: FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc [ 3336.286589] iwlagn 0000:01:00.0: FH_MEM_RSSR_RX_STATUS_REG: 0X07030000 [ 3336.286685] iwlagn 0000:01:00.0: FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000 [ 3336.286775] iwlagn 0000:01:00.0: FH_TSSR_TX_STATUS_REG: 0X07ff0001 [ 3336.286867] iwlagn 0000:01:00.0: FH_TSSR_TX_ERROR_REG: 0X00000000 [ 3336.286988] iwlagn 0000:01:00.0: Start IWL Event Log Dump: display last 20 entries [ 3336.287085] iwlagn 0000:01:00.0: EVT_LOGT:0300183642:0x00000080:1243 [ 3336.287158] iwlagn 0000:01:00.0: EVT_LOGT:0300183642:0x00040000:1243 [ 3336.287227] iwlagn 0000:01:00.0: EVT_LOGT:0300184009:0x000000fa:0106 [ 3336.287294] iwlagn 0000:01:00.0: EVT_LOGT:0300184046:0x00000080:1243 [ 3336.287362] iwlagn 0000:01:00.0: EVT_LOGT:0300184047:0x00040000:1243 [ 3336.287428] iwlagn 0000:01:00.0: EVT_LOGT:0300184053:0x000000fa:0106 [ 3336.287497] iwlagn 0000:01:00.0: EVT_LOGT:0300184082:0x00002000:1243 [ 3336.287565] iwlagn 0000:01:00.0: EVT_LOGT:0300184083:0x00004000:1243 [ 3336.287631] iwlagn 0000:01:00.0: EVT_LOGT:0300184139:0x00000080:1243 [ 3336.287697] iwlagn 0000:01:00.0: EVT_LOGT:0300184140:0x00040000:1243 [ 3336.287763] iwlagn 0000:01:00.0: EVT_LOGT:0300184446:0x000000fa:0106 [ 3336.287831] iwlagn 0000:01:00.0: EVT_LOGT:0300184486:0x00000080:1243 [ 3336.287897] iwlagn 0000:01:00.0: EVT_LOGT:0300184487:0x00040000:1243 [ 3336.287965] iwlagn 0000:01:00.0: EVT_LOGT:0300184493:0x000000fa:0106 [ 3336.288031] iwlagn 0000:01:00.0: EVT_LOGT:0300184522:0x00002000:1243 [ 3336.288097] iwlagn 0000:01:00.0: EVT_LOGT:0300184522:0x00004000:1243 [ 3336.288164] iwlagn 0000:01:00.0: EVT_LOGT:0300184525:0x00001000:1243 [ 3336.288232] iwlagn 0000:01:00.0: EVT_LOGT:0300184733:0x00000080:1243 [ 3336.288298] iwlagn 0000:01:00.0: EVT_LOGT:0300184734:0x00040000:1243 [ 3336.288364] iwlagn 0000:01:00.0: EVT_LOGT:0300189360:0x00000000:0125 This repeats itself every couple of seconds. I am running it as a wireless access point using hostapd though, and I am not losing connection to it (I am connected to it with several Android phones, and a MacBook pro). Throughout the day of it just sitting with phones connecting and disconnecting it has started kernel panic'ing. I have set up a netconsole to another machine on the network, but it has not happened again. All I have is pictures taken with my iPhone, unfortunately, I wish it was logged to disk someplace so I could give actual text output. Images available at: http://imgur.com/a/9eWbk I can also attach them to this bug report if desired.