Freescale IMX6 Sabre Lite - Unable to handle kernel NULL pointer dereference at virtual address

geoffbrown · ‎06-23-2014

Hi there, hope someone can help here.

We have a number of freescale imx6q boards (~20 of them) and in general they run fine, however on a few of them I have come across an "unable to handle kernel null pointer dereference at virtual address xx". I've built my own kernel here based on boundary 3.0.35-4.1 with some small mods to GPIO default settings and providing some additional usb device support. The image being run is based on the one found at boundary-devices.com/rapping-raring/.

I'd say I've come across this problem on 10-15% of the boards we are using and I cannot see what can be different - in fact the only differences between the images I am running on each board are one configuration file (for my own software) and the networking setup (as we have static ips). I've coped over the output from serial below. Any pointers would be very very gratefully recieved.

Cheers,

Geoff

U-Boot 2013.01-rc1-00120-g7c28db0 (Nov 12 2012 - 09:15:04)

CPU: Freescale i.MX6Q rev1.2 at 792 MHz

Reset cause: POR

Board: SABRE Lite

DRAM: 1 GiB

WARNING: Caches not enabled

MMC: FSL_SDHC: 0, FSL_SDHC: 1

SF: Detected SST25VF016B with page size 4 KiB, total 2 MiB

auto-detected panel wvga-rgb

Display: wvga-rgb (800x480)

In: serial

Out: serial

Err: serial

Net: FEC [PRIME]

Warning: failed to set MAC address

Hit any key to stop autoboot: 0

AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl SATA mode

flags: ncq stag pm led clo only pmp pio slum part

No port device detected!

** Bad device size - sata 0 **

SATA device 1: unknown device

** Bad device sata 1 **

MMC: no card present

mmc0(part 0) is current device

MMC: no card present

** Bad device mmc 0 **

MMC: no card present

** Bad device mmc 0 **

mmc1 is current device

** Unrecognized filesystem type **

2627 bytes read

## Executing script at 10008000

------ no HDMI monitor

Setting bus to 2

Valid chip addresses:

------ no Freescale display

Valid chip addresses:

------ no ft5x06 touch controller

Valid chip addresses: 48

** File not found /boot/imx6q-sabrelite.dtb **

only CEA modes allowed on HDMI port

3946812 bytes read

## Booting kernel from Legacy Image at 10800000 ...

Image Name: Linux-3.0.35-g45afd54-dirty

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 3946748 Bytes = 3.8 MiB

Load Address: 10008000

Entry Point: 10008000

Verifying Checksum ... OK

Loading Kernel Image ... OK

OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

Linux version 3.0.35-g45afd54-dirty (root@linaro-alip) (gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-1ubuntu1) ) #2 SMP PREEMPT Thu Jun 12 10:53:12 UTC 2014

CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d

CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

Machine: Boundary Devices Nitrogen6X/SABRE Lite Board

Memory policy: ECC disabled, Data cache writealloc

CPU identified as i.MX6Q, silicon rev 1.2

PERCPU: Embedded 7 pages/cpu @cc009000 s5440 r8192 d15040 u32768

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 227328

Kernel command line: enable_wait_mode=off video=mxcfb0:dev=lcd,CLAA-WVGA,if=RGB666,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off fbmem=10M console=ttymxc1,115200 vmalloc=400M consoleblank=0 rootwait root=/dev/mmcblk0p1 mxc_hdmi.only_cea=1

PID hash table entries: 2048 (order: 1, 8192 bytes)

Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)

Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)

Memory: 640MB 256MB = 896MB total

Memory: 900840k/900840k available, 147736k reserved, 507904K highmem

Virtual kernel memory layout:

vector : 0xffff0000 - 0xffff1000 ( 4 kB)

fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)

DMA : 0xf4600000 - 0xffe00000 ( 184 MB)

vmalloc : 0xd9800000 - 0xf2000000 ( 392 MB)

lowmem : 0xc0000000 - 0xd9000000 ( 400 MB)

pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)

modules : 0xbf000000 - 0xbfe00000 ( 14 MB)

.init : 0xc0008000 - 0xc003b000 ( 204 kB)

.text : 0xc003b000 - 0xc0715a88 (7019 kB)

.data : 0xc0716000 - 0xc07734c0 ( 374 kB)

.bss : 0xc07734e4 - 0xc07b9bec ( 282 kB)

SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1

Preemptible hierarchical RCU implementation.

NR_IRQS:624

MXC GPIO hardware

sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms

arm_max_freq=1GHz

MXC_Early serial console at MMIO 0x21e8000 (options '115200')

bootconsole [ttymxc1] enabled

Console: colour dummy device 80x30

Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available

CPU1: Booted secondary processor

CPU2: Booted secondary processor

CPU3: Booted secondary processor

Brought up 4 CPUs

SMP: Total of 4 processors activated (6324.22 BogoMIPS).

devtmpfs: initialized

print_constraints: dummy:

NET: Registered protocol family 16

print_constraints: vddpu: 725 <--> 1300 mV at 1150 mV fast normal

print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal

print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal

print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal

print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal

print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal

lcd_disable_pins

------------ Board type Sabre Lite

imx_add_mxc_pwm:pdata= (null)

imx_add_mxc_pwm:pdata=c0739dc8

imx_add_mxc_pwm:pdata= (null)

Flexcan NXP tja1040

hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.

hw-breakpoint: 1 breakpoint(s) reserved for watchpoint single-step.

hw-breakpoint: maximum watchpoint size is 4 bytes.

L310 cache controller enabled

l2x0: 16 ways, CACHE_ID 0x410000c7, AUX_CTRL 0x02070000, Cache size: 1048576 B

bio: create slab <bio-0> at 0

print_constraints: VDDA: 2500 mV

print_constraints: VDDIO: 3300 mV

machine_constraints_voltage: VDDD: unsupportable voltage constraints

reg-fixed-voltage reg-fixed-voltage.2: Failed to register regulator: -22

reg-fixed-voltage: probe of reg-fixed-voltage.2 failed with error -22

print_constraints: vmmc: 3300 mV

vgaarb: loaded

SCSI subsystem initialized

spi_imx imx6q-ecspi.0: probed

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

Freescale USB OTG Driver loaded, $Revision: 1.55 $

imx-ipuv3 imx-ipuv3.0: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

imx-ipuv3 imx-ipuv3.1: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

mxc_mipi_csi2 mxc_mipi_csi2: invalid param for mipi csi2!

mxc_mipi_csi2: probe of mxc_mipi_csi2 failed with error -22

MIPI CSI2 driver module loaded

Advanced Linux Sound Architecture Driver Version 1.0.24.

Bluetooth: Core ver 2.16

NET: Registered protocol family 31

Bluetooth: HCI device and connection manager initialized

Bluetooth: HCI socket layer initialized

Bluetooth: L2CAP socket layer initialized

Bluetooth: SCO socket layer initialized

cfg80211: Calling CRDA to update world regulatory domain

Switching to clocksource mxc_timer1

NET: Registered protocol family 2

IP route cache hash table entries: 16384 (order: 4, 65536 bytes)

TCP established hash table entries: 65536 (order: 7, 524288 bytes)

TCP bind hash table entries: 65536 (order: 7, 786432 bytes)

TCP: Hash tables configured (established 65536 bind 65536)

TCP reno registered

UDP hash table entries: 256 (order: 1, 8192 bytes)

UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)

NET: Registered protocol family 1

RPC: Registered named UNIX socket transport module.

RPC: Registered udp transport module.

RPC: Registered tcp transport module.

RPC: Registered tcp NFSv4.1 backchannel transport module.

PMU: registered new PMU device of type 0

Static Power Management for Freescale i.MX6

wait mode is disabled for i.MX6

cpaddr = d9880000 suspend_iram_base=d9918000

PM driver module loaded

iMX6 PCIe PCIe RC mode imx_pcie_pltfm_probe entering.

PCIE: imx_pcie_pltfm_probe start link up.

link up failed, DB_R0:0x00d01400, DB_R1:0x08200000!

IMX PCIe port: link down!

IMX usb wakeup probe

add wake up source irq 75

IMX usb wakeup probe

cpu regulator mode:ldo_enable

i.MXC CPU frequency driver

highmem bounce pool size: 64 pages

squashfs: version 4.0 (2009/01/31) Phillip Lougher

msgmni has been set to 767

alg: No test for stdrng (krng)

Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

pwm_config: pwm freq = 32786, clk_select=2 clock_rate=22000000

pwm_config: pwm freq = 20000, clk_select=2 clock_rate=22000000

MIPI DSI driver module loaded

mxc_sdc_fb mxc_sdc_fb.0: register mxc display driver lcd

lcd_enable_pins

ipu_init_sync_panel: disp=0, pixel_clk=27000000 27000000

pwm_config: pwm freq = 32786, clk_select=2 clock_rate=22000000

pwm_config: pwm freq = 20000, clk_select=2 clock_rate=22000000

ipu_init_sync_panel: disp=0, pixel_clk=27000000 27000000

Console: switching to colour frame buffer device 100x30

mxc_sdc_fb mxc_sdc_fb.1: mxcfb1 is turned off!

mxc_sdc_fb mxc_sdc_fb.2: mxcfb2 is turned off!

mxc_sdc_fb mxc_sdc_fb.3: mxcfb3 is turned off!

imx-sdma imx-sdma: loaded firmware 1.1

imx-sdma imx-sdma: initialized

Serial: IMX driver

imx-uart.0: ttymxc0 at MMIO 0x2020000 (irq = 58) is a IMX

imx-uart.1: ttymxc1 at MMIO 0x21e8000 (irq = 59) is a IMX

old_ufcr=a81 new_ufcr=b01, old_ucr2=4027 new_ucr2=4027, old_ubir=f num=1f7, old_ubmr=15b denom=c34

clk=80000000 div=7 num=504 denom=3125 baud=115200

console [ttymxc1] enabled, bootconsole disabled

loop: module loaded

Can't recover from RESET HBA!

No sata disk.

m25p80 spi0.0: sst25vf016b (2048 Kbytes)

Creating 3 MTD partitions on "m25p80":

0x000000000000-0x0000000c0000 : "bootloader"

0x0000000c0000-0x0000000c2000 : "ubparams"

0x0000000c2000-0x000000200000 : "unused"

vcan: Virtual CAN interface driver

CAN device driver interface

flexcan netdevice driver

flexcan imx6q-flexcan.0: device registered (reg_base=d99a8000, irq=142)

FEC Ethernet Driver

fec_enet_mii_bus: probed

tun: Universal TUN/TAP device driver, 1.6

ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver

fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1

fsl-ehci fsl-ehci.0: irq 75, io base 0x02184000

fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 1 port detected

add wake up source irq 72

fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2

fsl-ehci fsl-ehci.1: irq 72, io base 0x02184200

fsl-ehci fsl-ehci.1: USB 2.0 started, EHCI 1.00

hub 2-0:1.0: USB hub found

hub 2-0:1.0: 1 port detected

usbcore: registered new interface driver cdc_acm

cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

usbcore: registered new interface driver usbserial

usbserial: USB Serial Driver core

USB Serial support registered for cp210x

usbcore: registered new interface driver cp210x

cp210x: v0.09:Silicon Labs CP210x RS232 serial adaptor driver

USB Serial support registered for FTDI USB Serial Device

usbcore: registered new interface driver ftdi_sio

ftdi_sio: v1.6.0:USB FTDI Serial Converters Driver

USB Serial support registered for Keyspan - (without firmware)

USB Serial support registered for Keyspan 1 port adapter

USB Serial support registered for Keyspan 2 port adapter

USB Serial support registered for Keyspan 4 port adapter

usbcore: registered new interface driver keyspan

keyspan: v1.1.5:Keyspan USB to Serial Converter Driver

USB Serial support registered for GSM modem (1-port)

usbcore: registered new interface driver option

option: v0.7.2:USB Driver for GSM modems

USB Serial support registered for pl2303

usbcore: registered new interface driver pl2303

pl2303: Prolific PL2303 USB to serial adaptor driver

USB Serial support registered for Qualcomm USB modem

usbcore: registered new interface driver qcserial

ARC USBOTG Device Controller driver (1 August 2005)

mousedev: PS/2 mouse device common for all mice

input: gpio-keys as /devices/platform/gpio-keys/input/input0

input: tsc2004 as /devices/virtual/input/input1

egalax_ts 2-0004: egalax_ts: failed to read firmware version

egalax_ts: probe of 2-0004 failed with error -5

ft5x06-ts 2-0038: ft5x06: Could not detect touch screen.

ft5x06: May 23 2014

check_alarm_past: alarm in the past

snvs_rtc snvs_rtc.0: rtc core: registered snvs_rtc as rtc0

i2c /dev entries driver

Linux video capture interface: v2.00

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video16

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video17

i2c-core: driver [mma8450] using legacy suspend method

i2c-core: driver [mma8450] using legacy resume method

add mma8450 i2c driver

imx2-wdt imx2-wdt.0: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=1)

device-mapper: ioctl: 4.20.0-ioctl (2011-02-02) initialised: dm-devel@redhat.com

Bluetooth: HCI UART driver ver 2.2

Bluetooth: HCILL protocol initialized

sdhci: Secure Digital Host Controller Interface driver

sdhci: Copyright(c) Pierre Ossman

mmc0: SDHCI controller on platform [sdhci-esdhc-imx.2] using DMA

sdhci sdhci-esdhc-imx.3: no write-protect pin available!

mmc1: SDHCI controller on platform [sdhci-esdhc-imx.3] using DMA

mxc_vdoa mxc_vdoa: i.MX Video Data Order Adapter(VDOA) driver probed

VPU initialized

mxc_asrc registered

Galcore version 4.6.9.6622

usb 2-1: new high speed USB device number 2 using fsl-ehci

Thermal calibration data is 0x56a4b77d

Thermal sensor with ratio = 178

Anatop Thermal registered as thermal_zone0

anatop_thermal_probe: default cooling device is cpufreq!

usbcore: registered new interface driver usbhid

usbhid: USB HID core driver

usbcore: registered new interface driver snd-usb-audio

mxc_hdmi_soc mxc_hdmi_soc.0: MXC HDMI Audio

imx-hdmi-soc-dai imx-hdmi-soc-dai.0: Failed: Load HDMI-video first.

sgtl5000 0-000a: Failed to get supply 'VDDD': -19

print_constraints: 0-000a: 850 <--> 1600 mV at 1200 mV normal

sgtl5000 0-000a: sgtl5000 revision 17

hub 2-1:1.0: USB hub found

hub 2-1:1.0: 3 ports detected

asoc: sgtl5000 <-> imx-ssi.1 mapping ok

Initialize HDMI-audio failed. Load HDMI-video first!

ALSA device list:

#0: sgtl5000-audio

NET: Registered protocol family 26

TCP cubic registered

NET: Registered protocol family 10

IPv6 over IPv4 tunneling driver

NET: Registered protocol family 17

can: controller area network core (rev 20090105 abi 8)

NET: Registered protocol family 29

can: raw protocol (rev 20090105)

can: broadcast manager protocol (rev 20090105 t)

Bluetooth: RFCOMM TTY layer initialized

Bluetooth: RFCOMM socket layer initialized

Bluetooth: RFCOMM ver 1.11

Bluetooth: BNEP (Ethernet Emulation) ver 1.3

Bluetooth: BNEP filters: protocol multicast

Bluetooth: HIDP (Human Interface Emulation) ver 1.2

lib80211: common routines for IEEE802.11 drivers

VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4

Bus freq driver module loaded

Bus freq driver Enabled

mxc_dvfs_core_probe

DVFS driver module loaded

snvs_rtc snvs_rtc.0: setting system clock to 1970-01-01 00:00:00 UTC (0)

Waiting for root device /dev/mmcblk0p1...

mmc1: host does not support reading read-only switch. assuming write-enable.

mmc1: new high speed SDHC card at address 0001

mmcblk0: mmc1:0001 00000 14.6 GiB

mmcblk0: p1

usb 2-1.1: new full speed USB device number 3 using fsl-ehci

EXT3-fs (mmcblk0p1): error: couldn't mount because of unsupported optional features (240)

input: Burr-Brown from TI USB Audio CODEC as /devices/platform/fsl-ehci.1/usb2/2-1/2-1.1/2-1.1:1.3/input/input2

EXT2-fs (mmcblk0p1): error: couldn't mount because of unsupported optional features (244)

generic-usb 0003:08BB:2902.0001: input,hidraw0: USB HID v1.00 Device [Burr-Brown from TI USB Audio CODEC ] on usb-fsl-ehci.1-1.1/input3

usb 2-1.2: new high speed USB device number 4 using fsl-ehci

hub 2-1.2:1.0: USB hub found

hub 2-1.2:1.0: 4 ports detected

EXT4-fs (mmcblk0p1): recovery complete

EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. Opts: (null)

VFS: Mounted root (ext4 filesystem) on device 179:1.

devtmpfs: mounted

Freeing init memory: 204K

usb 2-1.2.2: new high speed USB device number 5 using fsl-ehci

hub 2-1.2.2:1.0: USB hub found

hub 2-1.2.2:1.0: 4 ports detected

usb 2-1.2.4: new low speed USB device number 6 using fsl-ehci

input: Microsoft Microsoft Basic Optical Mouse v2.0 as /devices/platform/fsl-ehci.1/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/input/input3

generic-usb 0003:045E:00CB.0002: input,hidraw1: USB HID v1.11 Mouse [Microsoft Microsoft Basic Optical Mouse v2.0 ] on usb-fsl-ehci.1-1.2.4/input0

init: ureadahead main process (75) terminated with status 5

usb 2-1.2.2.1: new low speed USB device number 7 using fsl-ehci

input: Microsoft Wired Keyboard 600 as /devices/platform/fsl-ehci.1/usb2/2-1/2-1.2/2-1.2.2/2-1.2.2.1/2-1.2.2.1:1.0/input/input4

generic-usb 0003:045E:0750.0003: input,hidraw2: USB HID v1.11 Keyboard [Microsoft Wired Keyboard 600] on usb-fsl-ehci.1-1.2.2.1/input0

input: Microsoft Wired Keyboard 600 as /devices/platform/fsl-ehci.1/usb2/2-1/2-1.2/2-1.2.2/2-1.2.2.1/2-1.2.2.1:1.1/input/input5

generic-usb 0003:045E:0750.0004: input,hidraw3: USB HID v1.11 Device [Microsoft Wired Keyboard 600] on usb-fsl-ehci.1-1.2.2.1/input1

update_device_addr: ov5642 ret=-5

ov5642_read_reg:write reg error:reg=300a

ov5640_read_reg:write reg error:reg=300a

Last login: Thu Jan 1 00:12:34 UTC 1970 on tty1

Welcome to Linaro 13.09 (GNU/Linux 3.0.35-g45afd54-dirty armv7l)

* Documentation: https://wiki.linaro.org/

root@linaro-alip:~#

root@linaro-alip:~# Unable to handle kernel NULL pointer dereference at virtual address 00000004

pgd = d72f4000

[00000004] *pgd=26e00831, *pte=00000000, *ppte=00000000

Internal error: Oops: 817 [#1] PREEMPT SMP

Modules linked in: ov5640_camera ov5642_camera camera_sensor_clock vivante drm

CPU: 0 Not tainted (3.0.35-g45afd54-dirty #2)

PC is at iso_sched_free+0x30/0x48

LR is at ehci_urb_enqueue+0xc50/0xe38

pc : [<c02f80c4>] lr : [<c0300930>] psr: 200f0193

sp : d72f3ad4 ip : d714af00 fp : 00000000

r10: d64f54e8 r9 : 00000000 r8 : d6b08300

r7 : 00000001 r6 : d65d7d80 r5 : d714af00 r4 : d65d7d94

r3 : d65d7d8c r2 : 00000000 r1 : d714af00 r0 : d65d7d80

Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user

Control: 10c53c7d Table: 272f404a DAC: 00000015

Process java (pid: 791, stack limit = 0xd72f22f0)

Stack: (0xd72f3ad4 to 0xd72f4000)

3ac0: d65d7d8c 00000784 00002d00

3ae0: 2225b000 00000000 d64f5400 d65d7d80 00000001 00000000 d64f54f8 c0300930

3b00: d65d7d8c 600f0193 00001000 d64f54e8 80000080 ffbfc4b4 d714af00 00000000

3b20: d72f3b20 d72f3b20 d64f5400 00000886 2225b000 d6b08300 00000000 d64f5400

3b40: d6b08308 00000020 0000011a 00000000 d64ca468 c02ea408 00000001 600f0193

3b60: 00000001 ffdf0000 d65c5358 00000000 d6918a80 d65c51c0 d65c5240 d6b08300

3b80: d6579300 00000004 0000011a 00000000 d64ca468 c03e1704 c03e1684 d6b08300

3ba0: 00000000 d64f54f8 d64f5400 c02e9710 00000000 00000000 d6b08300 c02fae6c

3bc0: d6b08300 ffbfc360 d65d7d80 00000000 d64f54e8 c02fede4 d72f3bd8 d72f3bd8

3be0: d65d254c 0000011a 0000011a ffdf7468 00000468 000008d0 00000000 d64f5538

3c00: 000008d6 00000fff d72f3c98 d64f54f8 d64f5400 00000000 d64f5400 d99a4340

3c20: 000c4081 d64f54f8 c072ba6c d64f54e8 00000001 c02ffaa0 ffbfc394 ffbfc394

3c40: 00000001 d65d7d80 d615bc00 d64f5400 a00f0193 00000001 00000000 00000048

3c60: c077d04c c071a500 00000001 c02e9230 d64daa40 00000000 00000000 c00ad9cc

3c80: 00001000 d64f54e8 80000080 c071a500 c071a54c d615ae00 00000048 00000000

3ca0: d72f2000 00000040 40b897ec c00adb38 c071a500 c071a54c 00058e8b c00b0070

3cc0: c072bcc8 c0039c00 d72f2000 c00ad334 00000270 c00419a0 ffffffff f2a00100

3ce0: 00000048 00000001 00000000 c0040acc d68d0580 00000000 d72f3d98 d72f3d9c

3d00: d68d0580 d72f3eec 00000040 00000000 00000040 d68d0580 00000040 40b897ec

3d20: c0495c50 d72f3d38 c0495ce4 c04029ac 200f0013 ffffffff d72f3d98 d72f3d9c

3d40: d68d0684 00000000 ffbfc900 c02fe99c d72f3de0 d64f54f8 d64f5400 00000119

3d60: 00000119 d68d0580 d72f3eec d72f2000 00000000 00000040 d72f3eec 00000040

3d80: 40b897ec c0495ce4 00000040 00000000 d68d05b0 d68d07b4 000c4081 fffffff5

3da0: 00000012 d68d0580 00000000 d72f3eec 00000040 d72f3e40 d72f3eec 00000040

3dc0: 40b897ec c045e560 00000040 00000000 d72f3ddc 00000048 00000000 0000001c

3de0: 00000000 00000000 00000000 d4571380 00000040 c03f72b4 00000040 d64f5400

3e00: d6b08788 c071a500 00000040 00000040 d4571380 00000000 00000000 d72f3eec

3e20: c071a54c c00adb44 c004ebec c071a500 00000000 d72f2000 c0039c00 d72f2000

3e40: 00000048 40b897ec 00000000 00000001 ffffffff 00000000 00000000 00000000

3e60: 00000000 00000000 d6b6a1c0 d72f3ee0 00000000 00000000 00000001 d70f2460

3e80: d72f3e00 d72f3ee0 40b89794 d72f2000 55981810 40b897ec 00000002 d72f3eb0

3ea0: c00f628c c00b2350 00000001 c00f628c fffffff7 d72f3edc 00000040 d4571380

3ec0: 00000040 d72f3f08 40b89794 d72f2000 55981810 c03f90e8 d64f5400 fffffff7

3ee0: 00000001 55981810 00000040 d72f3f08 00000080 d72f3ee4 00000001 00000000

3f00: 00000000 c054606c d615bc00 d64f5400 a00f0193 00000001 00000000 00000048

3f20: 00000000 00000001 00000001 00000080 00000048 c077d04c c071a500 c00ada24

3f40: d72f2000 c0718040 00000009 c071a500 c071a54c d615ae00 00000048 00000000

3f60: d72f2000 c071a500 c071a54c c00adb44 c004ebec c071a500 00000000 d72f2000

3f80: c0039c00 d72f2000 00000048 40b89794 40b8978c 00000040 00000124 c0041224

3fa0: 00000000 c0041080 40b89794 40b8978c 0000002d 55981810 00000040 00000000

3fc0: 40b89794 40b8978c 00000040 00000124 0000002d 40c07528 40b8978c 40b897ec

3fe0: 00000000 40b89770 400554ac 400554bc 800f0010 0000002d ffdfffff ffffffff

[<c02f80c4>] (iso_sched_free+0x30/0x48) from [<00000784>] (0x784)

Code: e591c004 e5834004 e5803014 e58c2000 (e582c004)

---[ end trace 256a2c0cd02acccf ]---

Kernel panic - not syncing: Fatal exception in interrupt

[<c0047e80>] (unwind_backtrace+0x0/0xf8) from [<c05402f0>] (panic+0x74/0x198)

[<c05402f0>] (panic+0x74/0x198) from [<c00447d4>] (die+0x228/0x28c)

[<c00447d4>] (die+0x228/0x28c) from [<c053f47c>] (__do_kernel_fault.part.3+0x54/0x74)

[<c053f47c>] (__do_kernel_fault.part.3+0x54/0x74) from [<c004b9c4>] (do_page_fault+0x234/0x2f8)

[<c004b9c4>] (do_page_fault+0x234/0x2f8) from [<c003b374>] (do_DataAbort+0x34/0x98)

[<c003b374>] (do_DataAbort+0x34/0x98) from [<c0040a50>] (__dabt_svc+0x70/0xa0)

Exception stack(0xd72f3a88 to 0xd72f3ad0)

3a80: d65d7d80 d714af00 00000000 d65d7d8c d65d7d94 d714af00

3aa0: d65d7d80 00000001 d6b08300 00000000 d64f54e8 00000000 d714af00 d72f3ad4

3ac0: c0300930 c02f80c4 200f0193 ffffffff

[<c0040a50>] (__dabt_svc+0x70/0xa0) from [<c02f80c4>] (iso_sched_free+0x30/0x48)

[<c02f80c4>] (iso_sched_free+0x30/0x48) from [<00000784>] (0x784)

CPU3: stopping

[<c0047e80>] (unwind_backtrace+0x0/0xf8) from [<c003b314>] (do_IPI+0x124/0x150)

[<c003b314>] (do_IPI+0x124/0x150) from [<c0040acc>] (__irq_svc+0x4c/0xe8)

Exception stack(0xd6067f90 to 0xd6067fd8)

7f80: 20000000 0000001d 00000000 f40dc010

7fa0: d6066000 c072fcdc c07735a4 c054a7b4 1000406a 412fc09a 00000000 00000000

7fc0: 00000001 d6067fd8 c004fa78 c0041bf8 800f0013 ffffffff

[<c0040acc>] (__irq_svc+0x4c/0xe8) from [<c0041bf8>] (default_idle+0x24/0x28)

[<c0041bf8>] (default_idle+0x24/0x28) from [<c0041dc8>] (cpu_idle+0x94/0x104)

[<c0041dc8>] (cpu_idle+0x94/0x104) from [<1053c5d4>] (0x1053c5d4)

CPU1: stopping

[<c0047e80>] (unwind_backtrace+0x0/0xf8) from [<c003b314>] (do_IPI+0x124/0x150)

[<c003b314>] (do_IPI+0x124/0x150) from [<c0040acc>] (__irq_svc+0x4c/0xe8)

Exception stack(0xd6057f90 to 0xd6057fd8)

7f80: 20000000 0000001d 00000000 f40dc010

7fa0: d6056000 c072fcdc c07735a4 c054a7b4 1000406a 412fc09a 00000000 00000000

7fc0: 00000001 d6057fd8 c004fa78 c0041bf8 800f0013 ffffffff

[<c0040acc>] (__irq_svc+0x4c/0xe8) from [<c0041bf8>] (default_idle+0x24/0x28)

[<c0041bf8>] (default_idle+0x24/0x28) from [<c0041dc8>] (cpu_idle+0x94/0x104)

[<c0041dc8>] (cpu_idle+0x94/0x104) from [<1053c5d4>] (0x1053c5d4)

CPU2: stopping

[<c0047e80>] (unwind_backtrace+0x0/0xf8) from [<c003b314>] (do_IPI+0x124/0x150)

[<c003b314>] (do_IPI+0x124/0x150) from [<c0040acc>] (__irq_svc+0x4c/0xe8)

Exception stack(0xd605ff90 to 0xd605ffd8)

ff80: 20000000 0000001d 00000000 f40dc010

ffa0: d605e000 c072fcdc c07735a4 c054a7b4 1000406a 412fc09a 00000000 00000000

ffc0: 00000001 d605ffd8 c004fa78 c0041bf8 800f0013 ffffffff

[<c0040acc>] (__irq_svc+0x4c/0xe8) from [<c0041bf8>] (default_idle+0x24/0x28)

[<c0041bf8>] (default_idle+0x24/0x28) from [<c0041dc8>] (cpu_idle+0x94/0x104)

[<c0041dc8>] (cpu_idle+0x94/0x104) from [<1053c5d4>] (0x1053c5d4)

EricNelson · ‎06-23-2014

Hi Geoff,

It's kinda hard to see what might be causing this, but it's clearly a bad thing.

There is one thing in your log that stands out though:

U-Boot 2013.01-rc1-00120-g7c28db0 (Nov 12 2012 - 09:15:04)

This makes no sense (U-Boot 2013.01 with a build date of 11/2012).

It's also a very old version of U-Boot. We've made a number of bug fixes since the 2013.01 release as described in our blog:

http://boundarydevices.com/tag/u-boot/

Can you update one of the mis-behaving boards to the 2014.04 release? It's hard to say whether any of them matches the very generic crash in your log, but it's worth ruling out.

If you're also using an old boot script, you might need this patch:

nitrogen6x boot script: fix quotes in setenv · 7dd870e · boundarydevices/u-boot-imx6 · GitHub

geoffbrown · ‎06-23-2014

I dont want to speak to soon but updating u-boot seems to have made things much more stable and I havent seen any null reference pointer errors :smileyhappy:

thanks Eric, I'll report back if I do get the same type of error again of course

Cheers,

Geoff

Freescale IMX6 Sabre Lite - Unable to handle kernel NULL pointer dereference at virtual address

Freescale IMX6 Sabre Lite - Unable to handle kernel NULL pointer dereference at virtual address

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