kexec and kdump crashkernel option

[bandarulavanya]

Hi all,

I am trying to take kernel crash backup log using kexec and kdump, using "kexec -l  vmlinux/uImage" i can able to load the image after that if i am giving  "kexec -e" board is rebooting immediately.

If i want to use "kexec -p vmlinux/uImage" it is giving like

root@(none) /home$ kexec -p vmlinux

Memory for crashkernel is not reserved

Please reserve memory by passing"crashkernel=X@Y" parameter to kernel

Then try to loading kdump kernel

I given in boot args like "crashkernel=128M@64M", Now kernel is not booting log i copied below.

MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK

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

   Image Name:   Linux-3.0.35-2666-gbdde708-svn20

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3462204 Bytes =  3.3 MB

   Load Address: 10008000

   Entry Point:  10008000

   Verifying Checksum ... OK

   Loading Kernel Image ... OK

OK

Starting kernel ...

What address i need to pass for crashkernel, can anyone help me please..

FYI : board is similar to imx6-sabresd

         DRAM:512M

          I cross compiled "kexec-tools-2.0.7" to get /sbin/kexec /sbin/kdump

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

Thanks & Regards,

Lavanya.B

[bandarulavanya]

Hi All,

SUCCESSFUL CASE :

In bootargs i am passing "crashkernel=50M@0x13000000"

kexec -d -l /boot/zImage --command-line="console=ttymxc2,115200 init=/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait reset_devices" --atags

which is starting new kernel

LOG:

kexec -d -l /boot/zImage --command-line="console=ttymxc2,115200 init=/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait reset_devices" --atags

kexec -e

starting new kernel

Bye!

Linux version 3.0.35-2666-gbdde708-svn200 (root@fossilshale-desktop) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.076

CPU: ARMv7 Processor [412fc09a] 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.MX6DL/SOLO, unknown revision

PERCPU: Embedded 7 pages/cpu @8bc06000 s5824 r8192 d14656 u32768

Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 130048

Kernel command line: console=ttymxc2,115200 init=/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait reset_devices

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: 512MB = 512MB total

UNSUCCESSFUL :

kexec -d -p /boot/zImage --command-line="console=ttymxc2,115200 init=/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait reset_devices" --atags

kernel: 0x2acaf008 kernel_size: 0x2eeabc

phys_offset: 0x10000000

kernel symbol _stext vaddr =         80008000

page_offset is set to 80000000

get_crash_notes_per_cpu: crash_notes addr = 1bc0c14c, size = 1024

Elf header: p_type = 4, p_offset = 0x1bc0c14c p_paddr = 0x1bc0c14c p_vaddr = 0x0 p_filesz = 0x400 p_memsz = 0x400

vmcoreinfo header: p_type = 4, p_offset = 0x10949c18 p_paddr = 0x10949c18 p_vaddr = 0x0 p_filesz = 0x1000 p_memsz = 0x1000

Elf header: p_type = 1, p_offset = 0x10000000 p_paddr = 0x10000000 p_vaddr = 0x80000000 p_filesz = 0x3000000 p_memsz = 0x3000000

Elf header: p_type = 1, p_offset = 0x16200000 p_paddr = 0x16200000 p_vaddr = 0x86200000 p_filesz = 0x19e00000 p_memsz = 0x19e00000

elfcorehdr: 0x16100000

crashkernel: [0x13000000 - 0x161fffff] (50M)

memory range: [0x10000000 - 0x12ffffff] (48M)

memory range: [0x16200000 - 0x2fffffff] (414M)

kernel command line: "console=ttymxc2,115200 init=/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait reset_devices elfcorehdr=0x16100000 me"

kexec_load: entry = 0x13008000 flags = 0x280001

nr_segments = 3

segment[0].buf   = 0x349c0

segment[0].bufsz = 0xf4

segment[0].mem   = 0x13001000

segment[0].memsz = 0x1000

segment[1].buf   = 0x2acaf008

segment[1].bufsz = 0x2eeabc

segment[1].mem   = 0x13008000

segment[1].memsz = 0x2ef000

segment[2].buf   = 0x34580

segment[2].bufsz = 0x400

segment[2].mem   = 0x16100000

segment[2].memsz = 0x1000

root@(none) ~$ echo c > /proc/sysrq-trigger

SysRq : Trigger a crash

Unable to handle kernel NULL pointer dereference at virtual address 00000000

pgd = 9f934000

[00000000] *pgd=2f875831, *pte=00000000, *ppte=00000000

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

Modules linked in:

CPU: 0    Not tainted  (3.0.35-2666-gbdde708-svn200 #7)

PC is at sysrq_handle_crash+0x30/0x40

LR is at sysrq_handle_crash+0x28/0x40

pc : [<80218cdc>]    lr : [<80218cd4>]    psr: 60000093

sp : 9fecff10  ip : a08ba000  fp : 00000000

r10: 00000000  r9 : 9fece000  r8 : 00000007

r7 : 60000013  r6 : 809296e8  r5 : 00000063  r4 : 8091a78c

r3 : 00000000  r2 : 00000001  r1 : a0000093  r0 : 80940b30

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

Control: 10c53c7d  Table: 2f93404a  DAC: 00000015

Process sh (pid: 2089, stack limit = 0x9fece2f0)

Stack: (0x9fecff10 to 0x9fed0000)

ff00:                                     80218cac 80219300 9fecff80 00000002

ff20: 9f921c80 80219370 9fecff80 00000002 000a9408 80219394 9fe5a600 801287f0

ff40: 9fecff80 9f921c80 00000002 000a9408 9fecff80 00000002 00000000 800e750c

ff60: 9f921c80 9ffc3460 9f921c80 000a9408 00000000 00000000 00000002 800e777c

ff80: 00000000 00000000 9ffc34a0 00000000 2acb85d0 00000002 000a9408 00000004

ffa0: 80039144 80038fc0 2acb85d0 00000002 00000001 000a9408 00000002 00000000

ffc0: 2acb85d0 00000002 000a9408 00000004 00000002 00000000 000a7808 00000000

ffe0: 00000000 7e8caac8 2abfa20c 2ac4ac0c 60000010 00000001 00000000 00000000

[<80218cdc>] (sysrq_handle_crash+0x30/0x40) from [<80219300>] (__handle_sysrq+0x104/0x174)

[<80219300>] (__handle_sysrq+0x104/0x174) from [<80219394>] (write_sysrq_trigger+0x24/0x34)

[<80219394>] (write_sysrq_trigger+0x24/0x34) from [<801287f0>] (proc_reg_write+0x70/0x94)

[<801287f0>] (proc_reg_write+0x70/0x94) from [<800e750c>] (vfs_write+0xa8/0x138)

[<800e750c>] (vfs_write+0xa8/0x138) from [<800e777c>] (sys_write+0x40/0x6c)

[<800e777c>] (sys_write+0x40/0x6c) from [<80038fc0>] (ret_fast_syscall+0x0/0x30)

Code: 0a000000 e12fff33 e3a03000 e3a02001 (e5c32000)

Loading crashdump kernel...

Bye!

Linux version 3.0.35-2666-gbdde708-svn200 (root@fossilshale-desktop) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.076

CPU: ARMv7 Processor [412fc09a] 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.MX6DL/SOLO, unknown revision

PERCPU: Embedded 7 pages/cpu @80a0a000 s5824 r8192 d14656 u32768

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 12446

Kernel command line: console=ttymxc2,115200 init=/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait reset_devices elfcorehdr=0x16100000 memK

PID hash table entries: 256 (order: -2, 1024 bytes)

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory: 49MB = 49MB total

Memory: 39812k/39812k available, 10364k reserved, 0K highmem

Virtual kernel memory layout:

    vector  : 0xffff0000 - 0xffff1000   (   4 kB)

    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)

    DMA     : 0xf4600000 - 0xffe00000   ( 184 MB)

    vmalloc : 0x83800000 - 0xf2000000   (1768 MB)

    lowmem  : 0x80000000 - 0x83100000   (  49 MB)

    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)

    modules : 0x7f000000 - 0x7fe00000   (  14 MB)

      .init : 0x80008000 - 0x80033000   ( 172 kB)

      .text : 0x80033000 - 0x808f2c6c   (8960 kB)

      .data : 0x808f4000 - 0x80940640   ( 306 kB)

       .bss : 0x80940664 - 0x809865a0   ( 280 kB)

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

Preemptible hierarchical RCU implementation.

NR_IRQS:624

MXC GPIO hardware

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

Set periph_clk's parent to pll2_pfd_400M!

arm_max_freq=1GHz

MXC_Early serial console at MMIO 0x21ec000 (options '115200')

bootconsole [ttymxc2] enabled

Calibrating delay loop... 1987.37 BogoMIPS (lpj=9936896)

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

Brought up 1 CPUs

SMP: Total of 1 processors activated (1987.37 BogoMIPS).

print_constraints: dummy:

NET: Registered protocol family 16

print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal

print_constraints: vddcore: 725 <--> 1300 mV at 1475 mV fast normal

print_constraints: vddsoc: 725 <--> 1300 mV at 1475 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 3200 mV fast normal

Board info HW version: FS-IMX6-WCAM.REV.B-FS_OV10626_DVP_CB.REV.B

Vishwa: usb  init

Vishwa: USB power enable

mx6_sabresd_board_init 2 clko2 set  rate=24000000

mx6_sabresd_board_init  1 clko set  rate=0

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 0x410000c8, AUX_CTRL 0x02050000, Cache size: 524288 B

bio: create slab <bio-0> at 0

mxs-dma mxs-dma-apbh: initialized

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 $

i2c i2c-0: Invalid 7-bit I2C address 0x00

i2c i2c-0: Can't create device at 0x00

mc_pfuze 1-0008: ID: 0,Full lay: 2 ,Metal lay: 1

mc_pfuze 1-0008: FAB: 0 ,FIN: 0

print_constraints: PFUZE100_SW1A: 300 <--> 1875 mV at 1300 mV

print_constraints: PFUZE100_SW1B: 300 <--> 1875 mV at 300 mV

print_constraints: PFUZE100_SW1C: 300 <--> 1875 mV at 1300 mV

print_constraints: PFUZE100_SW2: 800 <--> 3950 mV at 3300 mV

print_constraints: PFUZE100_SW3A: 400 <--> 1975 mV at 1200 mV

print_constraints: PFUZE100_SW3B: 400 <--> 1975 mV at 1500 mV

print_constraints: PFUZE100_SW4: 800 <--> 3950 mV at 3300 mV

print_constraints: PFUZE100_SWBST: 5000 <--> 5150 mV at 5000 mV

print_constraints: PFUZE100_VSNVS: 1200 <--> 3000 mV at 1800 mV

print_constraints: PFUZE100_VREFDDR: at 750 mV

print_constraints: PFUZE100_VGEN1: 800 <--> 1550 mV at 800 mV

print_constraints: PFUZE100_VGEN2: 800 <--> 1550 mV at 1500 mV

print_constraints: PFUZE100_VGEN3: 1800 <--> 3300 mV at 1800 mV

print_constraints: PFUZE100_VGEN4: 1800 <--> 3300 mV at 1800 mV

print_constraints: PFUZE100_VGEN5: 1800 <--> 3300 mV at 2500 mV

print_constraints: PFUZE100_VGEN6: 1800 <--> 3300 mV at 3000 mV

imx-ipuv3 imx-ipuv3.0: 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

i2c-core: driver [max17135] using legacy suspend method

i2c-core: driver [max17135] using legacy resume method

Switching to clocksource mxc_timer1

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 2048 (order: 2, 16384 bytes)

TCP bind hash table entries: 2048 (order: 2, 24576 bytes)

TCP: Hash tables configured (established 2048 bind 2048)

TCP reno registered

UDP hash table entries: 128 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 128 (order: 0, 4096 bytes)

NET: Registered protocol family 1

PMU: registered new PMU device of type 0

Static Power Management for Freescale i.MX6

wait mode is enabled for i.MX6

cpaddr = 83820000 suspend_iram_base=838a4000

PM driver module loaded

IMX usb wakeup probe

add wake up source irq 75

IMX usb wakeup probe

cpu regulator mode:ldo_bypass

_regulator_get: get() with no identifier

mx6_cpu_regulator_init: failed to get pu regulator

i.MXC CPU frequency driver

------------[ cut here ]------------

WARNING: at arch/arm/mm/ioremap.c:207 __arm_ioremap_pfn_caller+0xf0/0x104()

Modules linked in:

[<8003fb70>] (unwind_backtrace+0x0/0xf8) from [<8006b0e4>] (warn_slowpath_common+0x4c/0x64)

otg udc vbus falling wakeup

[<8006b0e4>] (warn_slowpath_common+0x4c/0x64) from [<8006b118>] (warn_slowpath_null+0x1c/0x24)

[<8006b118>] (warn_slowpath_null+0x1c/0x24) from [<80044368>] (__arm_ioremap_pfn_caller+0xf0/0x104)

[<80044368>] (__arm_ioremap_pfn_caller+0xf0/0x104) from [<800443e8>] (__arm_ioremap_caller+0x54/0x5c)

[<800443e8>] (__arm_ioremap_caller+0x54/0x5c) from [<8003fd9c>] (copy_oldmem_page+0x28/0xc0)

[<8003fd9c>] (copy_oldmem_page+0x28/0xc0) from [<80130c48>] (read_from_oldmem+0xb8/0xe4)

[<80130c48>] (read_from_oldmem+0xb8/0xe4) from [<8001b3b8>] (parse_crash_elf32_headers+0x198/0x4b0)

[<8001b3b8>] (parse_crash_elf32_headers+0x198/0x4b0) from [<8001b798>] (vmcore_init+0xc8/0x19c)

[<8001b798>] (vmcore_init+0xc8/0x19c) from [<800334e8>] (do_one_initcall+0x34/0x174)

[<800334e8>] (do_one_initcall+0x34/0x174) from [<80008940>] (kernel_init+0x98/0x13c)

[<80008940>] (kernel_init+0x98/0x13c) from [<80039aa4>] (kernel_thread_exit+0x0/0x8)

---[ end trace 65f8ea860415c04f ]---

Kdump: vmcore not initialized

msgmni has been set to 77

alg: No test for stdrng (krng)

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

MIPI DSI driver module loaded

mxc_sdc_fb mxc_sdc_fb.0: register mxc display driver ldb

_regulator_get: get() with no identifier

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

mxc_sdc_fb mxc_sdc_fb.1: register mxc display driver ldb

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

console [ttymxc2] enabled, bootconsole disabled

console [ttymxc2] enabled, bootconsole disabled

loop: module loaded

vcan: Virtual CAN interface driver

CAN device driver interface

flexcan netdevice driver

FEC Ethernet Driver

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

irq 72: nobody cared (try booting with the "irqpoll" option)

[<8003fb70>] (unwind_backtrace+0x0/0xf8) from [<800a18c8>] (__report_bad_irq+0x28/0xc4)

[<800a18c8>] (__report_bad_irq+0x28/0xc4) from [<800a1c0c>] (note_interrupt+0x1e4/0x240)

[<800a1c0c>] (note_interrupt+0x1e4/0x240) from [<800a0158>] (handle_irq_event_percpu+0xa8/0x180)

[<800a0158>] (handle_irq_event_percpu+0xa8/0x180) from [<800a026c>] (handle_irq_event+0x3c/0x5c)

[<800a026c>] (handle_irq_event+0x3c/0x5c) from [<800a25f0>] (handle_fasteoi_irq+0xbc/0x154)

[<800a25f0>] (handle_fasteoi_irq+0xbc/0x154) from [<8009fa68>] (generic_handle_irq+0x28/0x3c)

[<8009fa68>] (generic_handle_irq+0x28/0x3c) from [<80039870>] (handle_IRQ+0x4c/0xac)

[<80039870>] (handle_IRQ+0x4c/0xac) from [<80038a0c>] (__irq_svc+0x4c/0xe8)

[<80038a0c>] (__irq_svc+0x4c/0xe8) from [<801d1930>] (__delay+0x0/0xc)

handlers:

[<8005af8c>] usb_wakeup_handler

Disabling IRQ #72

irq 72: nobody cared (try booting with the "irqpoll" option)

[<8003fb70>] (unwind_backtrace+0x0/0xf8) from [<800a18c8>] (__report_bad_irq+0x28/0xc4)

[<800a18c8>] (__report_bad_irq+0x28/0xc4) from [<800a1c0c>] (note_interrupt+0x1e4/0x240)

[<800a1c0c>] (note_interrupt+0x1e4/0x240) from [<800a0158>] (handle_irq_event_percpu+0xa8/0x180)

[<800a0158>] (handle_irq_event_percpu+0xa8/0x180) from [<800a026c>] (handle_irq_event+0x3c/0x5c)

[<800a026c>] (handle_irq_event+0x3c/0x5c) from [<800a25f0>] (handle_fasteoi_irq+0xbc/0x154)

[<800a25f0>] (handle_fasteoi_irq+0xbc/0x154) from [<8009fa68>] (generic_handle_irq+0x28/0x3c)

[<8009fa68>] (generic_handle_irq+0x28/0x3c) from [<80039870>] (handle_IRQ+0x4c/0xac)

[<80039870>] (handle_IRQ+0x4c/0xac) from [<80038a0c>] (__irq_svc+0x4c/0xe8)

[<80038a0c>] (__irq_svc+0x4c/0xe8) from [<803fb360>] (_raw_spin_unlock_irqrestore+0x18/0x40)

[<803fb360>] (_raw_spin_unlock_irqrestore+0x18/0x40) from [<800a1280>] (__setup_irq+0x1e0/0x384)

[<800a1280>] (__setup_irq+0x1e0/0x384) from [<800a14cc>] (request_threaded_irq+0xa8/0x120)

[<800a14cc>] (request_threaded_irq+0xa8/0x120) from [<80260758>] (usb_hcd_fsl_probe+0x244/0x478)

[<80260758>] (usb_hcd_fsl_probe+0x244/0x478) from [<80226c04>] (platform_drv_probe+0x18/0x1c)

[<80226c04>] (platform_drv_probe+0x18/0x1c) from [<80225c2c>] (driver_probe_device+0x90/0x19c)

[<80225c2c>] (driver_probe_device+0x90/0x19c) from [<80225dc4>] (__driver_attach+0x8c/0x90)

[<80225dc4>] (__driver_attach+0x8c/0x90) from [<80224e4c>] (bus_for_each_dev+0x5c/0x88)

[<80224e4c>] (bus_for_each_dev+0x5c/0x88) from [<80225600>] (bus_add_driver+0x17c/0x244)

[<80225600>] (bus_add_driver+0x17c/0x244) from [<8022604c>] (driver_register+0x78/0x13c)

[<8022604c>] (driver_register+0x78/0x13c) from [<80020370>] (ehci_hcd_init+0x58/0x88)

[<80020370>] (ehci_hcd_init+0x58/0x88) from [<800334e8>] (do_one_initcall+0x34/0x174)

[<800334e8>] (do_one_initcall+0x34/0x174) from [<80008940>] (kernel_init+0x98/0x13c)

[<80008940>] (kernel_init+0x98/0x13c) from [<80039aa4>] (kernel_thread_exit+0x0/0x8)

handlers:

[<8005af8c>] usb_wakeup_handler

[<802604a8>] ehci_fsl_pre_irq

Disabling 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

irq 72: nobody cared (try booting with the "irqpoll" option)

[<8003fb70>] (unwind_backtrace+0x0/0xf8) from [<800a18c8>] (__report_bad_irq+0x28/0xc4)

[<800a18c8>] (__report_bad_irq+0x28/0xc4) from [<800a1c0c>] (note_interrupt+0x1e4/0x240)

[<800a1c0c>] (note_interrupt+0x1e4/0x240) from [<800a0158>] (handle_irq_event_percpu+0xa8/0x180)

[<800a0158>] (handle_irq_event_percpu+0xa8/0x180) from [<800a026c>] (handle_irq_event+0x3c/0x5c)

[<800a026c>] (handle_irq_event+0x3c/0x5c) from [<800a25f0>] (handle_fasteoi_irq+0xbc/0x154)

[<800a25f0>] (handle_fasteoi_irq+0xbc/0x154) from [<8009fa68>] (generic_handle_irq+0x28/0x3c)

[<8009fa68>] (generic_handle_irq+0x28/0x3c) from [<80039870>] (handle_IRQ+0x4c/0xac)

[<80039870>] (handle_IRQ+0x4c/0xac) from [<80038a0c>] (__irq_svc+0x4c/0xe8)

[<80038a0c>] (__irq_svc+0x4c/0xe8) from [<803fb360>] (_raw_spin_unlock_irqrestore+0x18/0x40)

[<803fb360>] (_raw_spin_unlock_irqrestore+0x18/0x40) from [<800a1280>] (__setup_irq+0x1e0/0x384)

[<800a1280>] (__setup_irq+0x1e0/0x384) from [<800a14cc>] (request_threaded_irq+0xa8/0x120)

[<800a14cc>] (request_threaded_irq+0xa8/0x120) from [<8024c7c4>] (usb_add_hcd+0x364/0x5b8)

[<8024c7c4>] (usb_add_hcd+0x364/0x5b8) from [<80260770>] (usb_hcd_fsl_probe+0x25c/0x478)

[<80260770>] (usb_hcd_fsl_probe+0x25c/0x478) from [<80226c04>] (platform_drv_probe+0x18/0x1c)

[<80226c04>] (platform_drv_probe+0x18/0x1c) from [<80225c2c>] (driver_probe_device+0x90/0x19c)

[<80225c2c>] (driver_probe_device+0x90/0x19c) from [<80225dc4>] (__driver_attach+0x8c/0x90)

[<80225dc4>] (__driver_attach+0x8c/0x90) from [<80224e4c>] (bus_for_each_dev+0x5c/0x88)

[<80224e4c>] (bus_for_each_dev+0x5c/0x88) from [<80225600>] (bus_add_driver+0x17c/0x244)

[<80225600>] (bus_add_driver+0x17c/0x244) from [<8022604c>] (driver_register+0x78/0x13c)

[<8022604c>] (driver_register+0x78/0x13c) from [<80020370>] (ehci_hcd_init+0x58/0x88)

[<80020370>] (ehci_hcd_init+0x58/0x88) from [<800334e8>] (do_one_initcall+0x34/0x174)

[<800334e8>] (do_one_initcall+0x34/0x174) from [<80008940>] (kernel_init+0x98/0x13c)

[<80008940>] (kernel_init+0x98/0x13c) from [<80039aa4>] (kernel_thread_exit+0x0/0x8)

handlers:

[<8005af8c>] usb_wakeup_handler

[<802604a8>] ehci_fsl_pre_irq

[<8024ba1c>] usb_hcd_irq

Disabling IRQ #72

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

ARC USBOTG Device Controller driver (1 August 2005)

my_batt_ext_power_changed!

It is not usb supply!

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

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

i2c /dev entries driver

Linux video capture interface: v2.00

OV1062x: ov1062x_init --------

OV1062x: ov1062x_probe --------

mx6q_csi0_io_init IPU IMXDL/Solo Selection

ov1062x_write_reg:write reg error:reg=303f,val=5

camera 303f write failed -1

camera ov1062x is found

^^^^^^^^^^OV1062x: ov1062x_probe Chip id high=0xa6****   Chip id low=0x26***

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

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

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

cpuidle: using governor ladder

cpuidle: using governor menu

sdhci: Secure Digital Host Controller Interface driver

sdhci: Copyright(c) Pierre Ossman

mmc0: no vmmc regulator found

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

mmc1: no vmmc regulator found

mmc1: SDHCI controller on platform [sdhci-esdhc-imx.0] using ADMA

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

VPU initialized

Warning: No contiguous memory is reserverd for gpu.!

Galcore version 4.6.9.6622

Thermal calibration data is 0x5cb54a5f

Thermal sensor with ratio = 194

Anatop Thermal registered as thermal_zone0

anatop_thermal_probe: default cooling device is cpufreq!

usbcore: registered new interface driver snd-usb-audio

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

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

mmc0: new high speed SDHC card at address 59b4

mmcblk0: mmc0:59b4 USD   7.47 GiB

regulator_init_complete: PFUZE100_VGEN6: incomplete constraints, leaving on

mmcblk0: p1 p2

Checking page ptr

regulator_init_complete: PFUZE100_VGEN2: incomplete constraints, leaving on

snvs_rtc snvs_rtc.0: setting system clock to 1970-01-01 00:02:05 UTC (125)

mmc1: card claims to support voltages below the defined range. These will be ignored.

mmc1: queuing unknown CIS tuple 0x91 (3 bytes)

mmc1: new SDIO card at address 0001

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.

Freeing init memory: 172K

Failed to execute /init.  Attempting defaults...

starting pid 1097, tty '': '/etc/rc.d/rcS'

Mounting /proc and /sys

mount: mounting pstore on /pstore failed: No such file or directory

Starting the hotplug events dispatcher udevd

Synthesizing initial hotplug evenudevd (1107): /proc/1107/oom_adj is deprecated, please use /proc/1107/oom_score_adj instead.

ts

After this it is Hanging....

how to solve this, and how can i get crash log backup.

If any one done this can you please help me...

Thanks & Regards,

Lavanya

[weidong_sun]

Hello Lavanya.B,

      Try the configuration: crashkernel=128M , please !

Regards,

Weidong

[bandarulavanya]

Hi Weidong Sun,

now i am giving like crashkernel=128M@304M

Starting kernel ...

[    0.000000] Linux version 3.0.35-2666-gbdde708-svn200 (root@fossilshale-desktop) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD --6

[    0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d

[    0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

[    0.000000] Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board

[    0.000000] Ignoring unrecognised tag 0x54410008

[    0.000000] Memory policy: ECC disabled, Data cache writealloc

[    0.000000] CPU identified as i.MX6DL/SOLO, silicon rev 1.2

[    0.000000] Reserving 128MB of memory at 304MB for crashkernel (System RAM: 512MB)

[    0.000000] PERCPU: Embedded 7 pages/cpu @8bc07000 s6176 r8192 d14304 u32768

[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 130048

[    0.000000] Kernel command line: console=ttymxc2,115200 init=/sbin/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait crashkernel=128M@304M

After kernel has booted i am passing

root@(none) $ kexec -d -p vmlinux --command-line="console=ttymxc2,115200 init=/sbin/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait crashkernel=128M@304M" --atags

Log :

root@none /home$ kexec -d -p vmlinux --command-line="console=ttymxc2,115200>

kernel: 0x2acb1008 kernel_size: 0x4579c4a

phys_offset: 0x10000000

kernel symbol _stext vaddr =         80008000

page_offset is set to 80000000

get_crash_notes_per_cpu: crash_notes addr = 1bc0d34c, size = 1024

Elf header: p_type = 4, p_offset = 0x1bc0d34c p_paddr = 0x1bc0d34c p_vaddr = 0x0 p_filesz = 0x400 p_memsz = 0x400

vmcoreinfo header: p_type = 4, p_offset = 0x10a61f78 p_paddr = 0x10a61f78 p_vaddr = 0x0 p_filesz = 0x1000 p_memsz = 0x1000

Elf header: p_type = 1, p_offset = 0x10000000 p_paddr = 0x10000000 p_vaddr = 0x80000000 p_filesz = 0x3000000 p_memsz = 0x3000000

Elf header: p_type = 1, p_offset = 0x1b000000 p_paddr = 0x1b000000 p_vaddr = 0x8b000000 p_filesz = 0x15000000 p_memsz = 0x15000000

elfcorehdr: 0x1af00000

crashkernel: [0x13000000 - 0x1affffff] (128M)

memory range: [0x10000000 - 0x12ffffff] (48M)

memory range: [0x1b000000 - 0x2fffffff] (336M)

kernel command line: "console=ttymxc2,115200 init=/sbin/init root=/dev/mmcblk0p1 rw rootfstype=ext4 rootwait crashkernel=128M@0x13000000 elfco"

kexec_load: entry = 0x13008000 flags = 0x280001

nr_segments = 3

segment[0].buf   = 0x349c0

segment[0].bufsz = 0x108

segment[0].mem   = 0x13001000

segment[0].memsz = 0x1000

segment[1].buf   = 0x2acb1008

segment[1].bufsz = 0x4579c4a

segment[1].mem   = 0x13008000

segment[1].memsz = 0x457a000

segment[2].buf   = 0x34580

segment[2].bufsz = 0x400

segment[2].mem   = 0x1af00000

segment[2].memsz = 0x1000

i am creating panic using echo c > /proc/sysrq-trigger

[  338.510892] SysRq : Trigger a crash

[  338.514604] Function: IN __do_kernel_fault

[  338.518286] Unable to handle kernel NULL pointer dereference at virtual address 00000000

[  338.526395] Function: IN show_pte

[  338.529287] pgd = 9faa4000

[  338.532006] [00000000] *pgd=2f90d831, *pte=00000000, *ppte=00000000

[  338.538341] Function:In oops_enter

[  338.541320] Function:In do_oops_enter_exit

[  338.545000] Internal error: Oops: 817 [#1] SMP

[  338.549458] Modules linked in:

[  338.552539] Function:In print_tainted

[  338.555784] CPU: 0    Not tainted  (3.0.35-2666-gbdde708-svn200 #20)

[  338.562177] PC is at sysrq_handle_crash+0x40/0x50

[  338.566917] LR is at _raw_spin_unlock_irqrestore+0x1c/0x24

[  338.572424] pc : [<802997a0>]    lr : [<804a7548>]    psr: 60000093

[  338.572436] sp : 9fa91ec8  ip : 9fa91e98  fp : 9fa91ed4

[  338.583941] r10: 00000000  r9 : 00000000  r8 : 00000007

[  338.589184] r7 : 20000013  r6 : 80a3e5cc  r5 : 00000063  r4 : 80a28998

[  338.595729] r3 : 00000000  r2 : 00000001  r1 : a0000093  r0 : 80a1ad20

[  338.602278] Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user

[  338.609520] Control: 10c53c7d  Table: 2faa404a  DAC: 00000015

[  338.615285] Process sh (pid: 2055, stack limit = 0x9fa902f0)

[  338.620962] Stack: (0x9fa91ec8 to 0x9fa92000)

[  338.625343] 1ec0:                   9fa91efc 9fa91ed8 8029a03c 8029976c 00000002 000a9408

[  338.633549] 1ee0: 8029a0b8 00000002 000a9408 9fa91f70 9fa91f14 9fa91f00 8029a100 80299f04

[  338.641755] 1f00: 9fdbd980 9f9816c0 9fa91f3c 9fa91f18 801843dc 8029a0c4 9f9816c0 00000002

[  338.649960] 1f20: 000a9408 9fa91f70 00000000 00000000 9fa91f6c 9fa91f40 8013c0c8 80184368

[  338.658166] 1f40: 9f874e00 00000000 9f9816c0 9f9816c0 000a9408 00000002 00000004 00000000

[  338.666371] 1f60: 9fa91fa4 9fa91f70 8013c360 8013c01c 00000000 00000000 9fa91fa4 00000000

[  338.674576] 1f80: 8013a14c 2ad155d0 00000002 000a9408 80050604 9fa90000 00000000 9fa91fa8

[  338.682780] 1fa0: 800503c0 8013c320 2ad155d0 00000002 00000001 000a9408 00000002 00000000

[  338.690984] 1fc0: 2ad155d0 00000002 000a9408 00000004 00000002 00000000 000a7818 00000000

[  338.699188] 1fe0: 00000000 7e88bac8 2ac5720c 2aca7c0c 60000010 00000001 00000000 00000000

[  338.707415] [<802997a0>] (sysrq_handle_crash+0x40/0x50) from [<8029a03c>] (__handle_sysrq+0x144/0x1c0)

[  338.716760] [<8029a03c>] (__handle_sysrq+0x144/0x1c0) from [<8029a100>] (write_sysrq_trigger+0x48/0x60)

[  338.726198] [<8029a100>] (write_sysrq_trigger+0x48/0x60) from [<801843dc>] (proc_reg_write+0x80/0xa4)

[  338.735464] [<801843dc>] (proc_reg_write+0x80/0xa4) from [<8013c0c8>] (vfs_write+0xb8/0x148)

[  338.743939] [<8013c0c8>] (vfs_write+0xb8/0x148) from [<8013c360>] (sys_write+0x4c/0x78)

[  338.751988] [<8013c360>] (sys_write+0x4c/0x78) from [<800503c0>] (ret_fast_syscall+0x0/0x30)

[  338.760458] Code: 0a000000 e12fff33 e3a03000 e3a02001 (e5c32000)

[  338.766585] Loading crashdump kernel...

[  338.770447] Bye!

[  338.774275] Function:In oops_enter

[  338.777270] Function:In do_oops_enter_exit

After 20sec kernel is rebooting because of watchdog timer, capture kernel only booting and i am not getting "/proc/vmcore " to get this what i need to do.

U-Boot 2009.08-svn220 (Feb 09 2016 - 18:59:50)

--------------------------------

--------------------------------

--------------------------------

mmc2 is current device

MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK

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

   Image Name:   Linux-3.0.35-2666-gbdde708-svn20

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3462204 Bytes =  3.3 MB

   Load Address: 10008000

   Entry Point:  10008000

   Verifying Checksum ... OK

   Loading Kernel Image ... OK

OK

Starting kernel ...

can anyone please help me i want to take crash log backup.

Thanks & Regards,

Lavanya