kmemleak during linux boot up

xiaoqiangyang · ‎08-17-2014

Hi all,

Now I am playing on my own designed i.MX6Q custom board and have been running u-boot2009.08 successfully.But I have trouble on starting linux.

Booting the linux kernel take a long time and after login,it's response is too slow.In addition,kmemleak appeared.This is the log:

bootargs:

ipaddr=192.168.2.66

serverip=192.168.2.130

netmask=255.255.255.0

loadaddr=0x10800000

rd_loadaddr=(0x1300000)

netdev=eth0

ethprime=FEC0

uboot=u-boot.bin

kernel=uImage

nfsroot=/srv/rootfs

bootargs_base=setenv bootargs console=ttymxc0,115200

bootargs_nfs=setenv bootargs $ root=/dev/nfs ip=dhcp nfsroot=${serveri p}:$,v3,tcp bootcmd_net=run bootargs_base bootargs_nfs; tftp uImage; bootm bootargs_mmc=setenv bootargs $ ip=dhcp root=/dev/mmcblk0p1 rootwait

bootcmd=run bootcmd_net

Booting kernel from Legacy Image at 10800000 ...

Image Name: Linux-3.0.35-2666-gbdde708

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 3904476 Bytes = 3.7 MB

Load Address: 10008000

Entry Point: 10008000

Verifying Checksum ... OK

Loading Kernel Image ... OK

OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

Linux version 3.0.35-2666-gbdde708 (root@lab-linux) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #44 SMP PREEMPT Mon Aug 18 12:31:36 CST 2014

CPU: ARMv7 Processor revision 10 (ARMv7), cr=10c53c7d

CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board

Ignoring unrecognised tag 0x54410008

Memory policy: ECC disabled, Data cache writealloc

CPU identified as i.MX6Q, silicon rev 1.2

PERCPU: Embedded 7 pages/cpu @8c80e000 s5440 r8192 d15040 u32768

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 454656

Kernel command line: console=ttymxc0,115200 root=/dev/nfs ip=dhcp nfsroot=192.168.2.130:/srv/rootfs,v3,tcp

PID hash table entries: 4096 (order: 2, 16384 bytes)

Dentry cache hash table entries: 262144 (order: 8, 1048576 bytes)

Inode-cache hash table entries: 131072 (order: 7, 524288 bytes)

Memory: 512MB 1280MB = 1792MB total

Memory: 1805240k/1805240k available, 291912k reserved, 360448K highmem

Virtual kernel memory layout:

vector : 0xffff0000 - 0xffff1000 ( 4 kB)

fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)

DMA : 0xf4600000 - 0xffe00000 ( 184 MB)

vmalloc : 0xea800000 - 0xf2000000 ( 120 MB)

lowmem : 0x80000000 - 0xea000000 (1696 MB)

pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)

modules : 0x7f000000 - 0x7fe00000 ( 14 MB)

.init : 0x80008000 - 0x80045000 ( 244 kB)

.text : 0x80045000 - 0x80aaa0cc (10645 kB)

.data : 0x80aac000 - 0x80b10300 ( 401 kB)

.bss : 0x80b10324 - 0x80b5e70c ( 313 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=800MHz

MXC_Early serial console at MMIO 0x2020000 (options '115200')

bootconsole 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).

print_constraints: dummy:

NET: Registered protocol family 16

print_constraints: vddpu: 725 at 0

mxs-dma mxs-dma-apbh: initialized

print_constraints: SPKVDD: 4200 mV

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 $

mc_pfuze 1-0008: recv failed!:-5,80

mc_pfuze: probe of 1-0008 failed with error -1

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: i.MX MIPI CSI2 driver probed

mxc_mipi_csi2 mxc_mipi_csi2: i.MX MIPI CSI2 dphy version is 0x3130302a

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

max17135 2-0048: PMIC MAX17135 for eInk display

i2c-core: driver using legacy suspend method

i2c-core: driver using legacy resume method

Switching to clocksource mxc_timer1

NET: Registered protocol family 2

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

TCP established hash table entries: 262144 (order: 9, 2097152 bytes)

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

TCP: Hash tables configured (established 262144 bind 65536)

TCP reno registered

UDP hash table entries: 1024 (order: 3, 32768 bytes)

UDP-Lite hash table entries: 1024 (order: 3, 32768 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 enabled for i.MX6

cpaddr = ea880000 suspend_iram_base=ea8f0000

PM driver module loaded

iMX6 PCIe PCIe RC mode imx_pcie_pltfm_probe entering.

PCIE: imx_pcie_pltfm_probe start link up.

IMX PCIe port: link up.

PCI: bus0: Fast back to back transfers disabled

PCI: bus1: Fast back to back transfers disabled

PCI: bus2: Fast back to back transfers disabled

PCI: bus3: Fast back to back transfers disabled

PCI: bus4: Fast back to back transfers enabled

PCI: bus5: Fast back to back transfers enabled

PCI: bus6: Fast back to back transfers enabled

PCI: bus7: Fast back to back transfers enabled

PCI: bus8: Fast back to back transfers enabled

pci 0000:00:00.0: BAR 0: assigned

pci 0000:00:00.0: BAR 0: set to (PCI address )

pci 0000:00:00.0: BAR 8: assigned

pci 0000:00:00.0: BAR 6: assigned

pci 0000:01:00.0: BAR 0: assigned

pci 0000:01:00.0: BAR 0: set to (PCI address )

pci 0000:03:00.0: PCI bridge to

pci 0000:03:00.0: bridge window

pci 0000:02:01.0: PCI bridge to

pci 0000:02:01.0: bridge window

pci 0000:02:04.0: PCI bridge to

pci 0000:02:04.0: bridge window

pci 0000:02:05.0: PCI bridge to

pci 0000:02:05.0: bridge window

pci 0000:02:07.0: PCI bridge to

pci 0000:02:07.0: bridge window

pci 0000:02:09.0: PCI bridge to

pci 0000:02:09.0: bridge window

pci 0000:01:00.0: PCI bridge to

pci 0000:01:00.0: bridge window

pci 0000:00:00.0: PCI bridge to

pci 0000:00:00.0: bridge window

PCI: enabling device 0000:01:00.0 (0140 -> 0143)

PCI: enabling device 0000:02:01.0 (0140 -> 0143)

PCI: enabling device 0000:03:00.0 (0140 -> 0143)

PCI: enabling device 0000:02:04.0 (0140 -> 0143)

PCI: enabling device 0000:02:05.0 (0140 -> 0143)

PCI: enabling device 0000:02:07.0 (0140 -> 0143)

PCI: enabling device 0000:02:09.0 (0140 -> 0143)

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

msgmni has been set to 2821

alg: No test for stdrng (krng)

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

mxc_mipi_dsi mxc_mipi_dsi: i.MX MIPI DSI driver probed

MIPI DSI driver module loaded

mxc_sdc_fb mxc_sdc_fb.0: register mxc display driver ldb

regulatorget: get() with no identifier

imx-ipuv3 imx-ipuv3.1: IPU DMFC DP HIGH RESOLUTION: 1(0,1), 5B(2~5), 5F(6,7)

Console: switching to colour frame buffer device 128x48

mxc_sdc_fb mxc_sdc_fb.1: register mxc display driver ldb

mxc_sdc_fb mxc_sdc_fb.2: register mxc display driver lcd

mxc_sdc_fb mxc_sdc_fb.3: register mxc display driver ldb

mxc_sdc_fb mxc_sdc_fb.3: ipu1-di0 already in use

mxc_sdc_fb: probe of mxc_sdc_fb.3 failed with error -16

imx-sdma imx-sdma: loaded firmware 1.1

imx-sdma imx-sdma: initialized

Serial: IMX driver

imx-uart.2: ttymxc2 at MMIO 0x21ec000 (irq = 60) is a IMX

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

console enabled, bootconsole disabled

loop: module loaded

No sata disk.

m25p80 spi0.0: found m25p32, expected sst25vf016b

m25p80 spi0.0: m25p32 (4096 Kbytes)

Creating 2 MTD partitions on "m25p80":

0x000000000000-0x000000100000 : "bootloader"

0x000000100000-0x000000400000 : "kernel"

GPMI NAND driver registered. (IMX)

vcan: Virtual CAN interface driver

CAN device driver interface

flexcan netdevice driver

FEC Ethernet Driver

fec_enet_mii_bus: probed

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

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

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: max11801_ts as /devices/platform/imx-i2c.1/i2c-1/1-0048/input/input1

egalax_ts 1-0004: egalax_ts: failed to read firmware version

egalax_ts: probe of 1-0004 failed with error -5

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

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

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

elan - Read Hello Packet Failed

elan-touch: probe of 2-0010 failed with error -22

i2c-core: driver using legacy suspend method

i2c-core: driver using legacy resume method

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

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video18

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video19

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video20

usb 2-1: device descriptor read/64, error -71

mag3110 2-000e: check mag3110 chip ID

mag3110 2-000e: read chip ID 0xfffffffb is not equal to 0xc4!

mag3110: probe of 2-000e failed with error -22

i2c-core: driver using legacy suspend method

i2c-core: driver using legacy resume method

mma8451 0-001c: read chip ID 0x1 is not equal to 0x1a or 0x2a!

mma8451: probe of 0-001c failed with error -22

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

Bluetooth: Virtual HCI driver ver 1.3

Bluetooth: HCI UART driver ver 2.2

Bluetooth: HCIATH3K protocol initialized

Bluetooth: Generic Bluetooth USB driver ver 0.6

usbcore: registered new interface driver btusb

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

VPU initialized

mxc_asrc registered

Galcore version 4.6.9.6622

Thermal calibration data is 0x5544d069

Thermal sensor with ratio = 175

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

Cirrus Logic CS42888 ALSA SoC Codec Driver

i2c-core: driver using legacy suspend method

i2c-core: driver using legacy resume method

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

wm8962 0-001a: Failed to get supply 'DCVDD': -19

wm8962 0-001a: Failed to request supplies: -19

wm8962 0-001a: asoc: failed to probe CODEC wm8962.0-001a: -19

asoc: failed to instantiate card wm8962-audio: -19

imx_3stack asoc driver

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

ALSA device list:

No soundcards found.

NET: Registered protocol family 26

TCP cubic registered

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

usb 2-1: device descriptor read/64, error -71

kmemleak: Kernel memory leak detector initialized

kmemleak: Automatic memory scanning thread started

regulator_init_complete: vmmc: incomplete constraints, leaving on

regulator_init_complete: SPKVDD: incomplete constraints, leaving on

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

eth0: Freescale FEC PHY driver (mii_bus:phy_addr=1:00, irq=-1)

usb 2-1: new full speed USB device number 3 using fsl-ehci

usb 2-1: device descriptor read/64, error -71

usb 2-1: new full speed USB device number 4 using fsl-ehci

usb 2-1: device not accepting address 4, error -71

usb 2-1: new full speed USB device number 5 using fsl-ehci

usb 2-1: device not accepting address 5, error -71

hub 2-0:1.0: unable to enumerate USB device on port 1

PHY: 1:00 - Link is Up - 100/Full

Sending DHCP requests .,

. OK

IP-Config: Got DHCP answer from 0.0.0.0, my address is 192.168.2.117

IP-Config: Complete:

device=eth0, addr=192.168.2.117, mask=255.255.255.0, gw=192.168.2.10,

host=192.168.2.117, domain=, nis-domain=(none),

bootserver=0.0.0.0, rootserver=192.168.2.130, rootpath=, mtu=576

VFS: Mounted root (nfs filesystem) on device 0:12.

Freeing init memory: 244K

kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)

note: it stopped here for a long time

nfs: server 192.168.2.130 not responding, still trying

nfs: server 192.168.2.130 OK

nfs: server 192.168.2.130 not responding, still trying

nfs: server 192.168.2.130 OK

starting pid 1413, tty '': '/etc/rc.d/rcS'

Mounting /proc and /sys

Starting the hotplug events dispatcher udevd

udevd (1460): /proc/1460/oom_adj is deprecated, please use /proc/1460/oom_score_adj instead.

Synthesizing initial hotplug events

Setting the hostname to freescale

Mounting filesystems

Booted NFS, not relocating: /tmp /var

mount: mounting usbfs on /proc/bus/usb failed: No such file or directory

starting pid 2729, tty '': '/etc/rc.d/rc_gpu.S'

starting pid 2736, tty '': '/etc/rc.d/rc_mxc.S'

arm-none-linux-gnueabi-gcc (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) 4.6.2 20110630 (prerelease)

root filesystem built on Mon, 11 Aug 2014 14:22:50 +0800

Freescale Semiconductor, Inc.

freescale login: kmemleak: 3 new suspected memory leaks (see /sys/kernel/debug/kmemleak)

arm-none-linux-gnueabi-gcc (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) 4.6.2 20110630 (prerelease)

root filesystem built on Mon, 11 Aug 2014 14:22:50 +0800

Freescale Semiconductor, Inc.

freescale login: root

login[2738]: root login on 'ttymxc0'

root@freescale ~$ mount -t debugfs nodev /sys/kernel/debug/

root@freescale ~$ echo scan /sys/kernel/debug/kmemleak

scan /sys/kernel/debug/kmemleak

root@freescale ~$ cat /sys/kernel/debug/kmemleak

unreferenced object 0xe412e3c0 (size 64):

comm "swapper", pid 1, jiffies 4294937508 (age 859.550s)

hex dump (first 32 bytes):

2c a2 9d e9 2c a2 9d e9 fc 49 a1 80 3c 00 00 00 ,...,....I..] 0xffffffff

I don't know why there is memory leaks and how to find the key by the file '/sys/kernel/debug/kmemleak'.

Any reply will be appreciated!

Best Regargs

Xiaoqiang

igorpadykov · ‎08-18-2014

Hi Xiaoqiang

it is recommended to use latest 3.10.17 yocto release, since

3.0.x kernels have memory leak issues, as stated on link below:

"defect in 3.0.35 where free memory is depleted by faulty cache

allocations and frees"

Long running vpu task with memory leak bug on imx6

Regarding kmemleak usage you can refer below

Dive into Technical - A beginner's sharing: KMEMLEAK

https://www.kernel.org/doc/Documentation/kmemleak.txt

Best regards

chip

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