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Date: Wed, 18 May 2016 06:20:14 -0600
From: Reinoud Koornstra <reinoudkoornstra@...il.com>
To: "Coelho, Luciano" <luciano.coelho@...el.com>
Cc: "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
"egrumbach@...il.com" <egrumbach@...il.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
linuxwifi <linuxwifi@...el.com>,
"Berg, Johannes" <johannes.berg@...el.com>,
"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
"kvalo@...eaurora.org" <kvalo@...eaurora.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"davem@...emloft.net" <davem@...emloft.net>,
"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
"Grumbach, Emmanuel" <emmanuel.grumbach@...el.com>
Subject: Re: [GIT] Networking
On Wed, May 18, 2016 at 4:51 AM, Coelho, Luciano
<luciano.coelho@...el.com> wrote:
> Hi Emmanuel, Linus,
>
>
> On Wed, 2016-05-18 at 06:37 +0300, Emmanuel Grumbach wrote:
>> On Wed, May 18, 2016 at 4:00 AM, Linus Torvalds
>> <torvalds@...ux-foundation.org> wrote:
>> >
>> > On Tue, May 17, 2016 at 12:11 PM, David Miller <davem@...emloft.net
>> > > wrote:
>> > >
>> > >
>> > > Highlights:
>> > Lowlights:
>> >
>> > 1) the iwlwifi driver seems to be broken
>> >
>> > My laptop that uses the intel 7680 iwlwifi module no longer
>> > connects
>> > to the network. It fails with a "Microcode SW error detected." and
>> > spews out register state over and over again.
>> Can we have the register state and the ASSERT / NMI / whatever that
>> goes along with it?
>> This clearly means that the firmware is crashing, but I don't know
>> why,
>> I copied here the lines that I need from another bug with another
>> device with another firmware,
>> but the log that we will still explain what I need:
>
> I managed to reproduce this bug locally with Linus' master. I'm
> investigating the cause and I'll let you how it goes.
I did run the latest git code as well 4.6+
iwlwifi went pearshape in my case as well.
I just updated the microcode as well, it didn't matter.
4.6-rc7 works fine and no errors are reported with iwlwifi.
Here's output that might come in handy
[ 17.436340] iwlwifi 0000:04:00.0: loaded firmware version
16.242414.0 op_mode iwlmvm
[ 17.714920] iwlwifi 0000:04:00.0: Detected Intel(R) Dual Band
Wireless AC 7260, REV=0x144
SNIP
[ 114.837923] wlp4s0: authenticate with 00:30:44:1d:cf:2b
[ 114.841365] wlp4s0: send auth to 00:30:44:1d:cf:2b (try 1/3)
[ 114.842073] wlp4s0: send auth to 00:30:44:1d:cf:2b (try 2/3)
[ 115.041992] iwlwifi 0000:04:00.0: Microcode SW error detected.
Restarting 0x2000000.
[ 115.041995] iwlwifi 0000:04:00.0: CSR values:
[ 115.041996] iwlwifi 0000:04:00.0: (2nd byte of CSR_INT_COALESCING
is CSR_INT_PERIODIC_REG)
[ 115.042000] iwlwifi 0000:04:00.0: CSR_HW_IF_CONFIG_REG: 0X40489204
[ 115.042003] iwlwifi 0000:04:00.0: CSR_INT_COALESCING: 0X80000040
[ 115.042006] iwlwifi 0000:04:00.0: CSR_INT: 0X00000000
[ 115.042009] iwlwifi 0000:04:00.0: CSR_INT_MASK: 0X00000000
[ 115.042013] iwlwifi 0000:04:00.0: CSR_FH_INT_STATUS: 0X00000000
[ 115.042016] iwlwifi 0000:04:00.0: CSR_GPIO_IN: 0X00000000
[ 115.042019] iwlwifi 0000:04:00.0: CSR_RESET: 0X00000000
[ 115.042022] iwlwifi 0000:04:00.0: CSR_GP_CNTRL: 0X080403c5
[ 115.042026] iwlwifi 0000:04:00.0: CSR_HW_REV: 0X00000144
[ 115.042029] iwlwifi 0000:04:00.0: CSR_EEPROM_REG: 0X00000000
[ 115.042032] iwlwifi 0000:04:00.0: CSR_EEPROM_GP: 0X80000000
[ 115.042035] iwlwifi 0000:04:00.0: CSR_OTP_GP_REG: 0X803a0000
[ 115.042038] iwlwifi 0000:04:00.0: CSR_GIO_REG: 0X001f0044
[ 115.042042] iwlwifi 0000:04:00.0: CSR_GP_UCODE_REG: 0X00000000
[ 115.042045] iwlwifi 0000:04:00.0: CSR_GP_DRIVER_REG: 0X00000000
[ 115.042048] iwlwifi 0000:04:00.0: CSR_UCODE_DRV_GP1: 0X00000000
[ 115.042051] iwlwifi 0000:04:00.0: CSR_UCODE_DRV_GP2: 0X00000000
[ 115.042054] iwlwifi 0000:04:00.0: CSR_LED_REG: 0X00000060
[ 115.042058] iwlwifi 0000:04:00.0: CSR_DRAM_INT_TBL_REG: 0X88035a74
[ 115.042061] iwlwifi 0000:04:00.0: CSR_GIO_CHICKEN_BITS: 0X27800200
[ 115.042064] iwlwifi 0000:04:00.0: CSR_ANA_PLL_CFG: 0Xd55555d5
[ 115.042067] iwlwifi 0000:04:00.0: CSR_MONITOR_STATUS_REG: 0X3d0801bd
[ 115.042070] iwlwifi 0000:04:00.0: CSR_HW_REV_WA_REG: 0X0001001a
[ 115.042074] iwlwifi 0000:04:00.0: CSR_DBG_HPET_MEM_REG: 0Xffff0000
[ 115.042075] iwlwifi 0000:04:00.0: FH register values:
[ 115.042086] iwlwifi 0000:04:00.0:
FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X455fd200
[ 115.042097] iwlwifi 0000:04:00.0:
FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X04556370
[ 115.042108] iwlwifi 0000:04:00.0:
FH_RSCSR_CHNL0_WPTR: 0X00000078
[ 115.042119] iwlwifi 0000:04:00.0:
FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X00801114
[ 115.042129] iwlwifi 0000:04:00.0:
FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
[ 115.042140] iwlwifi 0000:04:00.0:
FH_MEM_RSSR_RX_STATUS_REG: 0X03030000
[ 115.042151] iwlwifi 0000:04:00.0:
FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
[ 115.042162] iwlwifi 0000:04:00.0:
FH_TSSR_TX_STATUS_REG: 0X07ff0001
[ 115.042173] iwlwifi 0000:04:00.0:
FH_TSSR_TX_ERROR_REG: 0X00000000
[ 115.042278] iwlwifi 0000:04:00.0: Start IWL Error Log Dump:
[ 115.042279] iwlwifi 0000:04:00.0: Status: 0x00000000, count: 6
[ 115.042280] iwlwifi 0000:04:00.0: Loaded firmware version: 16.242414.0
[ 115.042281] iwlwifi 0000:04:00.0: 0x00000034 | NMI_INTERRUPT_WDG
[ 115.042282] iwlwifi 0000:04:00.0: 0x059002A0 | trm_hw_status0
[ 115.042283] iwlwifi 0000:04:00.0: 0x00000000 | trm_hw_status1
[ 115.042284] iwlwifi 0000:04:00.0: 0x00000B2C | branchlink2
[ 115.042285] iwlwifi 0000:04:00.0: 0x00016A90 | interruptlink1
[ 115.042286] iwlwifi 0000:04:00.0: 0x00017E2A | interruptlink2
[ 115.042287] iwlwifi 0000:04:00.0: 0x00000000 | data1
[ 115.042288] iwlwifi 0000:04:00.0: 0x00000002 | data2
[ 115.042289] iwlwifi 0000:04:00.0: 0x07030000 | data3
[ 115.042290] iwlwifi 0000:04:00.0: 0xFE86F74B | beacon time
[ 115.042291] iwlwifi 0000:04:00.0: 0x0500DB8F | tsf low
[ 115.042292] iwlwifi 0000:04:00.0: 0x00000000 | tsf hi
[ 115.042293] iwlwifi 0000:04:00.0: 0x0FFCF2CD | time gp1
[ 115.042294] iwlwifi 0000:04:00.0: 0x0500DB90 | time gp2
[ 115.042295] iwlwifi 0000:04:00.0: 0x00000000 | uCode revision type
[ 115.042296] iwlwifi 0000:04:00.0: 0x00000010 | uCode version major
[ 115.042297] iwlwifi 0000:04:00.0: 0x0003B2EE | uCode version minor
[ 115.042298] iwlwifi 0000:04:00.0: 0x00000144 | hw version
[ 115.042299] iwlwifi 0000:04:00.0: 0x40489204 | board version
[ 115.042300] iwlwifi 0000:04:00.0: 0x0000001C | hcmd
[ 115.042301] iwlwifi 0000:04:00.0: 0xA6EA3808 | isr0
[ 115.042302] iwlwifi 0000:04:00.0: 0x10818000 | isr1
[ 115.042303] iwlwifi 0000:04:00.0: 0x00000002 | isr2
[ 115.042304] iwlwifi 0000:04:00.0: 0x4041FCC7 | isr3
[ 115.042305] iwlwifi 0000:04:00.0: 0x00000000 | isr4
[ 115.042306] iwlwifi 0000:04:00.0: 0x10810112 | last cmd Id
[ 115.042307] iwlwifi 0000:04:00.0: 0x00000000 | wait_event
[ 115.042307] iwlwifi 0000:04:00.0: 0x00000050 | l2p_control
[ 115.042308] iwlwifi 0000:04:00.0: 0x00018020 | l2p_duration
[ 115.042309] iwlwifi 0000:04:00.0: 0x0000003F | l2p_mhvalid
[ 115.042310] iwlwifi 0000:04:00.0: 0x00000081 | l2p_addr_match
[ 115.042311] iwlwifi 0000:04:00.0: 0x00000005 | lmpm_pmg_sel
[ 115.042312] iwlwifi 0000:04:00.0: 0x17111905 | timestamp
[ 115.042313] iwlwifi 0000:04:00.0: 0x00347888 | flow_handler
[ 115.042316] ieee80211 phy0: Hardware restart was requested
[ 115.385259] iwlwifi 0000:04:00.0: L1 Disabled - LTR Enabled
[ 115.385483] iwlwifi 0000:04:00.0: L1 Disabled - LTR Enabled
[ 115.590186] iwlwifi 0000:04:00.0: L1 Disabled - LTR Enabled
[ 115.590424] iwlwifi 0000:04:00.0: L1 Disabled - LTR Enabled
[ 115.605968] wlp4s0: send auth to 00:30:44:1d:cf:2b (try 3/3)
[ 116.219795] iwlwifi 0000:04:00.0: No association and the time event
is over already...
[ 116.219850] wlp4s0: Connection to AP 00:30:44:1d:cf:2b lost
[ 116.781404] wlp4s0: authentication with 00:30:44:1d:cf:2b timed out
[ 116.793625] iwlwifi 0000:04:00.0: Couldn't drain frames for staid 0
[ 116.793631] ------------[ cut here ]------------
[ 116.793660] WARNING: CPU: 0 PID: 70 at net/mac80211/sta_info.c:963
__sta_info_destroy_part2+0x1a7/0x1b0 [mac80211]
[ 116.793662] Modules linked in: pl2303 usbserial
x86_pkg_temp_thermal intel_powerclamp arc4 snd_hda_codec_hdmi iwlmvm
coretemp mac80211 snd_hda_codec_realtek snd_hda_codec_generic
kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul i2c_design
ware_platform ghash_clmulni_intel 8250_dw iwlwifi i2c_designware_core
aesni_intel aes_x86_64 snd_hda_intel lrw snd_hda_codec gf128mul
glue_helper ablk_helper cryptd input_leds snd_hda_core snd_hwdep
cfg80211 serio_raw 8250_fintek snd_pcm snd_seq_
midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer
shpchp snd mei_me mei soundcore intel_lpss_acpi intel_lpss_pci
intel_lpss acpi_als mac_hid kfifo_buf industrialio acpi_pad parport_pc
ppdev lp parport autofs4 xfs libcrc32c i915
i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt hid_generic
[ 116.793714] fb_sys_fops usbhid mxm_wmi i2c_hid ahci r8169 mii drm
libahci hid wmi pinctrl_sunrisepoint video pinctrl_intel
[ 116.793727] CPU: 0 PID: 70 Comm: kworker/u16:1 Tainted: G U
4.6.0+ #1
[ 116.793730] Hardware name: MSI MS-7971/Z170A PC MATE (MS-7971),
BIOS A.70 01/25/2016
[ 116.793755] Workqueue: phy0 ieee80211_iface_work [mac80211]
[ 116.793758] 0000000000000286 00000000212b48cb ffff88045a4c7c58
ffffffff813ec315
[ 116.793762] 0000000000000000 0000000000000000 ffff88045a4c7c98
ffffffff81081d7b
[ 116.793766] 000003c3c0728d9a ffff88042b85a000 ffff880459054720
ffff88045bd4c840
[ 116.793770] Call Trace:
[ 116.793777] [<ffffffff813ec315>] dump_stack+0x85/0xc0
[ 116.793782] [<ffffffff81081d7b>] __warn+0xcb/0xf0
[ 116.793786] [<ffffffff81081ead>] warn_slowpath_null+0x1d/0x20
[ 116.793807] [<ffffffffc072dfd7>]
__sta_info_destroy_part2+0x1a7/0x1b0 [mac80211]
[ 116.793826] [<ffffffffc072e00a>] __sta_info_destroy+0x2a/0x40 [mac80211]
[ 116.793845] [<ffffffffc072e058>] sta_info_destroy_addr+0x38/0x60 [mac80211]
[ 116.793874] [<ffffffffc0773227>]
ieee80211_destroy_auth_data+0x37/0xc0 [mac80211]
[ 116.793904] [<ffffffffc077a551>] ieee80211_sta_work+0x511/0x760 [mac80211]
[ 116.793927] [<ffffffffc073d750>] ieee80211_iface_work+0x370/0x410 [mac80211]
[ 116.793932] [<ffffffff810a981b>] ? finish_task_switch+0x7b/0x200
[ 116.793937] [<ffffffff8109c32d>] process_one_work+0x16d/0x480
[ 116.793942] [<ffffffff8109c68b>] worker_thread+0x4b/0x510
[ 116.793947] [<ffffffff8109c640>] ? process_one_work+0x480/0x480
[ 116.793951] [<ffffffff8109c640>] ? process_one_work+0x480/0x480
[ 116.793955] [<ffffffff810a2968>] kthread+0xd8/0xf0
[ 116.793961] [<ffffffff81845d0f>] ret_from_fork+0x1f/0x40
[ 116.793964] [<ffffffff810a2890>] ? kthread_create_on_node+0x1a0/0x1a0
[ 116.793967] ---[ end trace 8fa8ad606433a1bc ]---
>
> --
> Cheers,
> Luca.
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