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kernel panic not syncing: Attempted to kill the idle task!  Rebooting in 180 seconds.

Question asked by sivakumar puli on Apr 3, 2017
Latest reply on Apr 27, 2017 by Yiping Wang



we are using P2020 Processor, when i power up the board 


NOR BOOT CONSOLE:  U_boot is working  fine, but at kernel level it stalls middle only it shows like kernel panic not syncing: Attempted to kill the idle task! Rebooting in 180 seconds. or  Unable to handle kernel paging request for data at address 0x00000009 Faulting instruction address: 0xc0093780  it doesn't boot totally what could be the problem, even it shows same thing from the SD boot also, i am attached console log , please help me.


console log


U-Boot 2014.07QorIQ-SDK-V1.7+g659b6a2 (Aug 19 2016 - 12:55:09)


CPU0: P2020E, Version: 2.1, (0x80ea0021)

Core: e500, Version: 5.1, (0x80211051)

Clock Configuration:

CPU0:1200 MHz, CPU1:1800 MHz,

CCB:600 MHz,

DDR:400 MHz (800 MT/s data rate) (Asynchronous), LBC:37.500 MHz

L1: D-cache 32 KiB enabled

I-cache 32 KiB enabled

Board: P2020RDB-PCA CPLD: V4.2 PCBA: V4.0

rom_loc: nor upper bank

SD/MMC : 8-bit Mode

eSPI : Disabled

I2C: ready

SPI: ready

DRAM: Detected UDIMM

1 GiB (DDR3, 64-bit, CL=6, ECC off)

Flash: 64 MiB

L2: 512 KiB enabled

NAND: 128 MiB


PCIe1: disabled

PCIe2: disabled

In: serial

Out: serial

Err: serial

Net: No address specified for VSC7385 microcode.

Phy not found

PHY reset timed out


Hit any key to stop autoboot: 0



WARNING: adjusting available memory to 30000000

## Booting kernel from Legacy Image at 01000000 ...

Image Name: Linux-3.12.19-rt30-QorIQ-SDK-V1.

Created: 2016-10-26 5:50:59 UTC

Image Type: PowerPC Linux Kernel Image (gzip compressed)

Data Size: 4214294 Bytes = 4 MiB

Load Address: 00000000

Entry Point: 00000000

Verifying Checksum ... OK

## Flattened Device Tree blob at 00c00000

Booting using the fdt blob at 0xc00000

Uncompressing Kernel Image ... OK

Loading Device Tree to 03ff9000, end 03fff56f ... OK

WARNING: could not find compatible node fsl-usb2-dr: FDT_ERR_NOTFOUND.

Using P2020RDB-PC machine description

Memory CAM mapping: 256/256/256 Mb, residual: 256Mb

Linux version 3.12.19-rt30-QorIQ-SDK-V1.7+g91a3ad25 (santosh@santosh-Inspiron-36

CPU maps initialized for 1 thread per core

bootconsole [udbg0] enabled

setup_arch: bootmem


mpc85xx_qe_init: Could not find Quicc Engine node

MPC85xx RDB board from Freescale Semiconductor

arch: exit

Zone ranges:

DMA [mem 0x00000000-0x2fffffff]

Normal empty

HighMem [mem 0x30000000-0x3fffffff]

Movable zone start for each node

Early memory node ranges

node 0: [mem 0x00000000-0x3fffffff]

MMU: Allocated 1088 bytes of context maps for 255 contexts

PERCPU: Embedded 7 pages/cpu @c1176000 s7104 r8192 d13376 u32768

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260608

Kernel command line: root=/dev/mtdblock2 rootfstype=jffs2 rw console=ttyS0,11520

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

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

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

Sorting __ex_table...

Memory: 963772K/1048576K available (6024K kernel code, 320K rwdata, 1800K rodat)

Kernel virtual memory layout:

* 0xfff5f000..0xfffff000 : fixmap

* 0xffc00000..0xffe00000 : highmem PTEs

* 0xffbfc000..0xffc00000 : early ioremap

* 0xf1000000..0xffbfc000 : vmalloc & ioremap

SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=2, Nodes=1

Hierarchical RCU implementation.

RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.

NR_IRQS:512 nr_irqs:512 16

mpic: Setting up MPIC " OpenPIC " version 1.2 at ffe40000, max 2 CPUs

mpic: ISU size: 256, shift: 8, mask: ff

mpic: Initializing for 256 sources

mpc85xx_rdb_pic_init: Could not find qe-ic node

clocksource: timebase mult[d555555] shift[24] registered

Console: colour dummy device 80x25

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

mpic: requesting IPIs...

Unable to handle kernel paging request for instruction fetch

Faulting instruction addOops: Kernel access of blists in Zone order,

Machine check in kernel mode.

Caused by (from MCSR=100Data Cache Parity Error

Oops: Machine check, sig: 7 [#2]


Modules linked in:

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.12.19-rt30-QorIQ-SDK-V1.7+g91a3ad257

task: ef0535c0 ti: effee000 task.ti: ef06e000

NIP: c05ddc3c LR: c05ddc3c CTR: c0011180

REGS: effeff10 TRAP: 0204 Not tainted (3.12.19-rt30-QorIQ-SDK-V1.7+g91a3ad25)

MSR: 00021000 <CE,ME> CR: 22004022 XER: 00000000


GPR00: c05ddc3c ef06f630 ef0535c0 0000002d 00021000 0000002e 00000000 00000001

GPR08: c07f44a4 c07f44a0 c07f44a4 00000040 22004024 00000000 00000001 01411890

GPR16: 808010d6 80000910 09388281 c07e81c8 c07e81c8 c07e81c8 00000000 c08399c4

GPR24: 00021000 c0840000 ef06f6b0 c06fe664 ef06e000 c07f0000 0000000b c083c5b8

NIP [c05ddc3c] printk+0x68/0x78

LR [c05ddc3c] printk+0x68/0x78

Call Trace:

[ef06f630] [c05ddc3c] printk+0x68/0x78 (unreliable)

[ef06f670] [c000a808] die+0xe8/0x294

[ef06f6a0] [c000f4ac] handle_page_fault+0x7c/0x80

--- Exception: 400 at 0xfdfffbbc

LR = 0xfdfffbbf

Instruction dump:

90c10024 38c00000 90e10028 7d675b78 9101002c 39010008 9121000c 39210018

90010044 91410034 91210010 4baa0e31 <80010044> 38210040 7c0803a6 4e800020

---[ end trace 487d9901f2f411d7 ]---


Kernel panic - not syncing: Attempted to kill the idle task!

Rebooting in 180 seconds..