Linux/DRA746: about booting failed issue during kernel stage

Hi Sir

we have went into secure mode but it still failed during systemd is initializing.

there is no help if we go into emergency mode.

your advice would be appreciated.

BR
Yimin

Hi Yimin,

can you tell which version is your SDK?

Thanks,
Yordan

Hi SIr

Linux Vision SDK 3.0 which is Compatible with Processor SDK Linux version 3.02
Kernel: 4.4

thanks for your help

BR
Yimin

Hi Yimin,

I have forwarded your question to an expert for comment.

Regards,
Yordan

Hi Sir 

thanks for your help.

BTW, is it possible that this issue is caused by HW design ? 

like ethernet port number or others 

And we have done the DDR3 test and there is no issue found.

BR

Yimin

Hi

The boot failure logs seem to indicate some kind of SW lockup condition

Can you provide some additional details on the differences between the TI EVM and your board and also summarize the changes incorporated in SW to handle 

board related differences

Hi Sir 

the HW differences between TI J6 EVM and customed board are listed as below 

1. no audio codec tlv320aic3106

2. no display serdes

3. only one etherent phy

4. no eMMC /no QSPI/ no IO expander / no PCIe/ no wireless module.

after we disable some setting in dts and rebuild SDK to generate the image for booting.

and the log message showed " OK ] Started udev Coldplug all Devices." in the end as below and then system halted 

//=============================================================//

Welcome to Arago 2016.12!

[ 3.667346] systemd[1]: Set hostname to <dra7xx-evm>.
[ 3.693847] random: systemd: uninitialized urandom read (16 bytes read, 16 bits of entropy available)
[ 3.703169] systemd[1]: Initializing machine ID from random generator.
[ 3.800645] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 18 bits of entropy available)
[ 3.817068] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 18 bits of entropy available)
[ 3.827527] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 18 bits of entropy available)
[ 3.849555] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 18 bits of entropy available)
[ 3.876288] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 19 bits of entropy available)
[ 4.029771] random: systemd: uninitialized urandom read (16 bytes read, 22 bits of entropy available)
[ 4.039403] random: systemd: uninitialized urandom read (16 bytes read, 22 bits of entropy available)
[ 4.432360] systemd[1]: sysinit.target: Found ordering cycle on sysinit.target/start
[ 4.440197] systemd[1]: sysinit.target: Found dependency on alignment.service/start
[ 4.447968] systemd[1]: sysinit.target: Found dependency on basic.target/start
[ 4.455227] systemd[1]: sysinit.target: Found dependency on sockets.target/start
[ 4.462689] systemd[1]: sysinit.target: Found dependency on avahi-daemon.socket/start
[ 4.470571] systemd[1]: sysinit.target: Found dependency on sysinit.target/start
[ 4.478014] systemd[1]: sysinit.target: Breaking ordering cycle by deleting job alignment.service/start
[ 4.487466] systemd[1]: alignment.service: Job alignment.service/start deleted to break ordering cycle starting with sysinit.target/start
[ SKIP ] Ordering cycle found, skipping alignment.service
[ 4.528113] systemd[1]: Listening on Network Service Netlink Socket.
[ OK ] Listening on Network Service Netlink Socket.
[ 4.555660] systemd[1]: Listening on udev Kernel Socket.
[ OK ] Listening on udev Kernel Socket.
[ 4.600045] systemd[1]: Listening on Syslog Socket.
[ OK ] Listening on Syslog Socket.
[ 4.626922] systemd[1]: Created slice System Slice.
[ OK ] Created slice System Slice.
[ 4.656199] systemd[1]: Created slice system-serial\x2dgetty.slice.
[ OK ] Created slice system-serial\x2dgetty.slice.
[ 4.685738] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ OK ] Started Forward Password Requests to Wall Directory Watch.
[ 4.716514] systemd[1]: Listening on Journal Socket.
[ OK ] Listening on Journal Socket.
[ 4.785815] systemd[1]: Starting Setup Virtual Console...
Starting Setup Virtual Console...
[ 4.817875] systemd[1]: Starting Create list of required static device nodes for the current kernel...
Starting Create list of required st... nodes for the current kernel...
[ 4.847926] systemd[1]: Mounting Debug File System...
Mounting Debug File System...
[ 4.875874] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[ OK ] Started Dispatch Password Requests to Console Directory Watch.
[ 4.905672] systemd[1]: Listening on Journal Socket (/dev/log).
[ OK ] Listening on Journal Socket (/dev/log).
[ 4.935578] systemd[1]: Reached target Swap.
[ OK ] Reached target Swap.
[ 4.956318] systemd[1]: Created slice system-getty.slice.
[ OK ] Created slice system-getty.slice.
[ 5.005654] systemd[1]: Mounting Temporary Directory...
Mounting Temporary Directory...
[ 5.035682] systemd[1]: Reached target Paths.
[ OK ] Reached target Paths.
[ 5.095629] systemd[1]: Mounting POSIX Message Queue File System...
Mounting POSIX Message Queue File System...
[ 5.117769] systemd[1]: Starting Journal Service...
Starting Journal Service...
[ 5.146267] systemd[1]: Created slice User and Session Slice.
[ OK ] Created slice User and Session Slice.
[ 5.175670] systemd[1]: Reached target Slices.
[ OK ] Reached target Slices.
[ 5.225809] systemd[1]: Starting Load Kernel Modules...
Starting Load Kernel Modules...
[ 5.255761] systemd[1]: Listening on udev Control Socket.
[ OK ] Listening on udev Control Socket.
[ 5.275711] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[ OK ] Listening on /dev/initctl Compatibility Named Pipe.
[ 5.295846] systemd[1]: Reached target Remote File Systems.
[ OK ] Reached target Remote File Systems.
[ 5.345798] systemd[1]: Starting Remount Root and Kernel File Systems...
Starting Remount Root and Kernel File Systems...
[ 5.363673] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 5.382582] systemd[1]: Mounted POSIX Message Queue File System.
[ OK ] Mounted POSIX Message Queue File System.
[ 5.405902] systemd[1]: Mounted Debug File System.
[ OK ] Mounted Debug File System.
[ 5.425648] systemd[1]: Mounted Temporary Directory.
[ OK ] Mounted Temporary Directory.
[ 5.445852] systemd[1]: Started Journal Service.
[ OK ] Started Journal Service.
[ OK ] Started Setup Virtual Console.
[ OK ] Started Create list of required sta...ce nodes for the current kernel.
[FAILED] Failed to start Load Kernel Modules.
See 'systemctl status systemd-modules-load.service' for details.
[ OK ] Started Remount Root and Kernel File Systems.
Starting Rebuild Dynamic Linker Cache...
Starting Rebuild Hardware Database...
Starting Apply Kernel Variables...
Starting Create Static Device Nodes in /dev...
Starting Flush Journal to Persistent Storage...
[ 6.057148] systemd-journald[122]: Received request to flush runtime journal from PID 1
[ OK ] Started Flush Journal to Persistent Storage.
[ OK ] Started Apply Kernel Variables.
[ OK ] Started Create Static Device Nodes in /dev.
Starting udev Kernel Device Manager...
[ OK ] Reached target Local File Systems (Pre).
Mounting /var/volatile...
Mounting /media/ram...
[ OK ] Mounted /var/volatile.
[ OK ] Mounted /media/ram.
Starting Load/Save Random Seed...
[ OK ] Reached target Local File Systems.
Starting Rebuild Journal Catalog...
Starting Create Volatile Files and Directories...
[ OK ] Started Load/Save Random Seed.
[ OK ] Started Rebuild Journal Catalog.
[ OK ] Started udev Kernel Device Manager.
[ OK ] Started Create Volatile Files and Directories.
Starting Opkg first boot configure...
Starting Network Time Synchronization...
Starting Update UTMP about System Boot/Shutdown...
[ OK ] Started Network Time Synchronization.
[ OK ] Started Update UTMP about System Boot/Shutdown.
[ OK ] Started Rebuild Hardware Database.
Starting udev Coldplug all Devices...
[ OK ] Reached target System Time Synchronized.
Starting Synchronize System and HW clocks...
[FAILED] Failed to start Synchronize System and HW clocks.
See 'systemctl status sync-clocks.service' for details.
[ OK ] Started udev Coldplug all Devices.

//====================================================================//

do you have any suggestion? 

thanks for help.

BR

Yimin

Hi Sir

we rebuild Processor SDK Linux version 3.02 and only modify SD card power control pin in dra7-evm.dts for our customized board.

the system will crash or halt.

the HW differences between TI J6 EVM and customed board are listed as below

1. no audio codec tlv320aic3106

2. no display serdes

3. only one etherent phy

4. no eMMC /no QSPI/ no IO expander / no PCIe/ no wireless module.

and below is the error message

//========================================================//

U-Boot SPL 2016.05-00002-g68a4cab-dirty (Nov 21 2017 - 13:50:09)
DRA752-GP ES1.1

MMC Device 1 not found
*** Warning - No MMC card found, using default environment

Trying to boot from MMC1
MMC Device 1 not found
*** Warning - No MMC card found, using default environment

reading u-boot.img
reading u-boot.img
reading u-boot.img
reading u-boot.img


U-Boot 2016.05-00002-g68a4cab-dirty (Nov 21 2017 - 13:50:09 +0800)

CPU : DRA752-GP ES1.1
Model: TI DRA742
Board: DRA74x EVM REV
DRAM: 1.5 GiB
MMC: OMAP SD/MMC: 0
MMC Device 1 not found
*** Warning - No MMC card found, using default environment

Warning: fastboot.board_rev: unknown board revision
MMC Device 1 not found
ERROR: invalid mmc device

at arch/arm/cpu/armv7/omap-common/utils.c:189/mmc_get_part_size()
Warning: fastboot.userdata_size: unable to calc
SCSI: SATA link 0 timeout.
AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl SATA mode
flags: 64bit ncq stag pm led clo only pmp pio slum part ccc apst
scanning bus for devices...
Found 0 device(s).
Net:
Warning: ethernet@48484000 using MAC address from ROM
eth0: ethernet@48484000
Hit any key to stop autoboot: 2 1 0
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
250 bytes read in 4 ms (60.5 KiB/s)
Loaded env from uEnv.txt
Importing environment from mmc0 ...
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
3630088 bytes read in 254 ms (13.6 MiB/s)
112315 bytes read in 103 ms (1 MiB/s)
Booting from mmc0 ...
Kernel image @ 0x82000000 [ 0x000000 - 0x376408 ]
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Device Tree to 8ffe1000, end 8ffff6ba ... OK

Starting kernel ...

[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.4.45-dirty (root@ubuntu) (gcc version 5.3.1 20160113 (Linaro GCC 5.3-2016.02) ) #2 SMP PREEMPT Wed Nov 22 10:48:33 CST 2017
[ 0.000000] CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=30c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[ 0.000000] Machine model: TI DRA742
[ 0.000000] bootconsole [earlycon0] enabled
[ 0.000000] Reserved memory: created CMA memory pool at 0x0000000095800000, size 56 MiB
[ 0.000000] Reserved memory: initialized node ipu2_cma@95800000, compatible id shared-dma-pool
[ 0.000000] Reserved memory: created CMA memory pool at 0x0000000099000000, size 64 MiB
[ 0.000000] Reserved memory: initialized node dsp1_cma@99000000, compatible id shared-dma-pool
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000009d000000, size 32 MiB
[ 0.000000] Reserved memory: initialized node ipu1_cma@9d000000, compatible id shared-dma-pool
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000009f000000, size 8 MiB
[ 0.000000] Reserved memory: initialized node dsp2_cma@9f000000, compatible id shared-dma-pool
[ 0.000000] cma: Reserved 64 MiB at 0x00000000dbc00000
[ 0.000000] Forcing write-allocate cache policy for SMP
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] OMAP4: Map 0x00000000dfd00000 to fe600000 for dram barrier
[ 0.000000] DRA752 ES1.1
[ 0.000000] PERCPU: Embedded 11 pages/cpu @ef1ab000 s14848 r8192 d22016 u45056
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 389440
[ 0.000000] Kernel command line: console=ttyO0,115200n8 elevator=noop root=PARTUUID=77de00f1-02 rw rootwait earlyprintk fixrtc omapdrm.num_crtc=2 consoleblank=0 cma=64M rootfstype=ext4 snd.slots_reserved=1,1
[ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Memory: 1309632K/1564672K available (6619K kernel code, 371K rwdata, 2492K rodata, 332K init, 290K bss, 25664K reserved, 229376K cma-reserved, 716800K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xf0800000 - 0xff800000 ( 240 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xf0000000 ( 768 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc08ee044 (9113 kB)
[ 0.000000] .init : 0xc08ef000 - 0xc0942000 ( 332 kB)
[ 0.000000] .data : 0xc0942000 - 0xc099ef50 ( 372 kB)
[ 0.000000] .bss : 0xc09a0000 - 0xc09e8840 ( 291 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Build-time adjustment of leaf fanout to 32.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] ti_dt_clocks_register: failed to lookup clock node gmac_gmii_ref_clk_div
[ 0.000000] OMAP clockevent source: timer1 at 32786 Hz
[ 0.000000] Architected cp15 timer(s) running at 6.14MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x16af5adb9, max_idle_ns: 440795202250 ns
[ 0.000005] sched_clock: 56 bits at 6MHz, resolution 162ns, wraps every 4398046511023ns
[ 0.008306] Switching to timer-based delay loop, resolution 162ns
[ 0.014958] clocksource: 32k_counter: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 58327039986419 ns
[ 0.025220] OMAP clocksource: 32k_counter at 32768 Hz
[ 0.030989] Console: colour dummy device 80x30
[ 0.035643] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
[ 0.042436] This ensures that you still see kernel messages. Please
[ 0.048952] update your kernel commandline.
[ 0.053345] Calibrating delay loop (skipped), value calculated using timer frequency.. 12.29 BogoMIPS (lpj=61475)
[ 0.063979] pid_max: default: 32768 minimum: 301
[ 0.068890] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.075778] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.083625] Initializing cgroup subsys io
[ 0.087848] Initializing cgroup subsys memory
[ 0.092418] Initializing cgroup subsys devices
[ 0.097067] Initializing cgroup subsys freezer
[ 0.101726] Initializing cgroup subsys perf_event
[ 0.106644] Initializing cgroup subsys pids
[ 0.111039] CPU: Testing write buffer coherency: ok
[ 0.116331] /cpus/cpu@0 missing clock-frequency property
[ 0.121877] /cpus/cpu@1 missing clock-frequency property
[ 0.127431] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.133355] Setting up static identity map for 0x80008380 - 0x800083e0
[ 0.220557] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.220618] Brought up 2 CPUs
[ 0.229637] SMP: Total of 2 processors activated (24.59 BogoMIPS).
[ 0.236078] CPU: All CPU(s) started in HYP mode.
[ 0.240897] CPU: Virtualization extensions available.
[ 0.246543] devtmpfs: initialized
[ 0.280385] VFP support v0.3: implementor 41 architecture 4 part 30 variant f rev 0
[ 0.289314] omap_hwmod: l3_main_2 using broken dt data from ocp
[ 0.493195] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.507829] pinctrl core: initialized pinctrl subsystem
[ 0.514160] NET: Registered protocol family 16
[ 0.519766] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.556990] cpuidle: using governor ladder
[ 0.587019] cpuidle: using governor menu
[ 0.599979] OMAP GPIO hardware version 0.1
[ 0.608416] GPIO line 161 (radio_rst) hogged as output/low
[ 0.616509] irq: no irq domain found for /ocp/l4@4a000000/scm@2000/pinmux@1400 !
[ 0.641774] omap-gpmc 50000000.gpmc: GPMC revision 6.0
[ 0.647155] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000
[ 0.666544] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.674863] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.681414] omap4_sram_init:Unable to allocate sram needed to handle errata I688
[ 0.689109] omap4_sram_init:Unable to get sram pool needed to handle errata I688
[ 0.697357] OMAP DMA hardware revision 0.0
[ 0.743019] omap-dma-engine 4a056000.dma-controller: OMAP DMA engine driver (LinkedList1/2/3 supported)
[ 0.753978] edma 43300000.edma: memcpy is disabled
[ 0.763811] edma 43300000.edma: TI EDMA DMA engine driver
[ 0.773854] omap-iommu 40d01000.mmu: 40d01000.mmu registered
[ 0.779925] omap-iommu 40d02000.mmu: 40d02000.mmu registered
[ 0.785998] omap-iommu 58882000.mmu: 58882000.mmu registered
[ 0.792044] omap-iommu 55082000.mmu: 55082000.mmu registered
[ 0.798244] omap-iommu 41501000.mmu: 41501000.mmu registered
[ 0.804334] omap-iommu 41502000.mmu: 41502000.mmu registered
[ 0.813594] palmas 0-0058: IRQ missing: skipping irq request
[ 0.830598] palmas 0-0058: Muxing GPIO 2e, PWM 0, LED 0
[ 0.902511] pcf857x: probe of 0-0020 failed with error -121
[ 0.908564] pcf857x: probe of 0-0021 failed with error -121
[ 0.914538] omap_i2c 48070000.i2c: bus 0 rev0.12 at 400 kHz
[ 0.934619] pcf857x 1-0026: probed
[ 0.939165] mcp230xx: probe of 1-0027 failed with error -121
[ 0.945292] mcp230xx: probe of 1-0021 failed with error -121
[ 0.951401] mcp230xx: probe of 1-0025 failed with error -121
[ 0.958031] omap_i2c 48072000.i2c: bus 1 rev0.12 at 400 kHz
[ 0.964203] omap_i2c 48060000.i2c: bus 2 rev0.12 at 400 kHz
[ 0.990129] pcf857x: probe of 3-0021 failed with error -121
[ 0.995963] omap_i2c 4807a000.i2c: bus 3 rev0.12 at 400 kHz
[ 1.002003] media: Linux media interface: v0.10
[ 1.006785] Linux video capture interface: v2.00
[ 1.011641] pps_core: LinuxPPS API ver. 1 registered
[ 1.016837] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 1.026314] PTP clock support registered
[ 1.030483] EDAC MC: Ver: 3.0.0
[ 1.034533] omap-mailbox 48840000.mailbox: omap mailbox rev 0x400
[ 1.041179] omap-mailbox 48842000.mailbox: omap mailbox rev 0x400
[ 1.047869] Advanced Linux Sound Architecture Driver Initialized.
[ 1.055097] clocksource: Switched to clocksource arch_sys_counter
[ 1.071920] NET: Registered protocol family 2
[ 1.076988] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[ 1.084362] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[ 1.091195] TCP: Hash tables configured (established 8192 bind 8192)
[ 1.097857] UDP hash table entries: 512 (order: 2, 16384 bytes)
[ 1.104041] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[ 1.110867] NET: Registered protocol family 1
[ 1.115693] RPC: Registered named UNIX socket transport module.
[ 1.121855] RPC: Registered udp transport module.
[ 1.126780] RPC: Registered tcp transport module.
[ 1.131693] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 1.139477] hw perfevents: enabled with armv7_cortex_a15 PMU driver, 7 counters available
[ 1.150412] futex hash table entries: 512 (order: 3, 32768 bytes)
[ 1.164357] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 1.171135] NFS: Registering the id_resolver key type
[ 1.176445] Key type id_resolver registered
[ 1.180825] Key type id_legacy registered
[ 1.185078] ntfs: driver 2.1.32 [Flags: R/O].
[ 1.191650] bounce: pool size: 64 pages
[ 1.195855] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 247)
[ 1.203541] io scheduler noop registered (default)
[ 1.208590] io scheduler deadline registered
[ 1.213087] io scheduler cfq registered
[ 1.222141] pinctrl-single 4a003400.pinmux: 282 pins at pa fc003400 size 1128
[ 1.232874] PCI host bridge /ocp/axi@0/pcie_rc@51000000 ranges:
[ 1.239083] No bus range found for /ocp/axi@0/pcie_rc@51000000, using [bus 00-ff]
[ 1.247083] IO 0x20003000..0x20012fff -> 0x00000000
[ 1.252456] MEM 0x20013000..0x2fffffff -> 0x20013000
[ 1.290836] dra7-pcie 51000000.pcie_rc: link is not up
[ 1.296376] dra7-pcie 51000000.pcie_rc: PCI host bridge to bus 0000:00
[ 1.303166] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 1.308900] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
[ 1.315345] pci_bus 0000:00: root bus resource [mem 0x20013000-0x2fffffff]
[ 1.322883] PCI: bus0: Fast back to back transfers disabled
[ 1.328822] PCI: bus1: Fast back to back transfers enabled
[ 1.334613] pci 0000:00:00.0: BAR 0: assigned [mem 0x20100000-0x201fffff]
[ 1.341693] pci 0000:00:00.0: BAR 1: assigned [mem 0x20020000-0x2002ffff]
[ 1.348764] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 1.354155] pcieport 0000:00:00.0: Signaling PME through PCIe PME interrupt
[ 1.669371] fpd3_serdes 1-001b: Not a fpd3_24b_ser chip
[ 1.674832] fpd3_serdes: probe of 7-002c failed with error -5
[ 1.680972] fpd3_serdes 1-001b: Serializer fpd3_24b_ser ready
[ 1.687493] fpd3_serdes: probe of 7-002c failed with error -121
[ 1.753845] Serial: 8250/16550 driver, 10 ports, IRQ sharing disabled
[ 1.763920] 4806a000.serial: ttyS0 at MMIO 0x4806a000 (irq = 301, base_baud = 3000000) is a 8250
[ 1.773141] console [ttyS0] enabled
[ 1.773141] console [ttyS0] enabled
[ 1.780342] bootconsole [earlycon0] disabled
[ 1.780342] bootconsole [earlycon0] disabled
[ 1.790016] 4806c000.serial: ttyS1 at MMIO 0x4806c000 (irq = 302, base_baud = 3000000) is a 8250
[ 1.799710] 48020000.serial: ttyS2 at MMIO 0x48020000 (irq = 303, base_baud = 3000000) is a 8250
[ 1.809839] [drm] Initialized drm 1.1.0 20060810
[ 1.816561] OMAP DSS rev 6.1
[ 1.820334] omapdss_dss 58000000.dss: bound 58001000.dispc (ops dispc_component_ops)
[ 1.828772] omapdss_dss 58000000.dss: bound 58040000.encoder (ops hdmi5_component_ops)
[ 1.838788] connector-hdmi connector@1: failed to find video source
[ 1.851371] loop: module loaded
[ 1.855606] nand: No NAND device found
[ 1.859375] omap2-nand 8000000.nand: scan failed, may be bus-width mismatch
[ 1.869271] m25p80 spi32766.0: unrecognized JEDEC id bytes: 00, 0, 0
[ 1.876827] libphy: Fixed MDIO Bus: probed
[ 1.925132] davinci_mdio 48485000.mdio: davinci mdio revision 1.6
[ 1.931258] davinci_mdio 48485000.mdio: detected phy mask fffffffb
[ 1.939500] libphy: 48485000.mdio: probed
[ 1.943532] davinci_mdio 48485000.mdio: phy[2]: device 48485000.mdio:02, driver unknown
[ 1.952249] cpsw 48484000.ethernet: Detected MACID = 74:da:ea:23:8b:8e
[ 1.958909] cpsw 48484000.ethernet: cpts: overflow check period 800
[ 1.965882] cpsw 48484000.ethernet: cpsw: Detected MACID = 74:da:ea:23:8b:8f
[ 1.974568] mousedev: PS/2 mouse device common for all mice
[ 1.981032] i2c /dev entries driver
[ 1.985384] tvp5158 1-0058: Unable to of_probe
[ 1.990213] ov1063x 1-0037: Failed writing register 0x0103!
[ 1.995843] ov1063x: probe of 1-0037 failed with error -121
[ 2.001765] ov1063x 1-0030: Failed writing register 0x0103!
[ 2.007392] ov1063x: probe of 1-0030 failed with error -121
[ 2.013791] vpe 489d0000.vpe: loading firmware vpdma-1b8.bin
[ 2.020898] vip 48970000.vip: loading firmware vpdma-1b8.bin
[ 2.027801] vip 48990000.vip: loading firmware vpdma-1b8.bin
[ 2.034598] vip 489b0000.vip: loading firmware vpdma-1b8.bin
[ 2.040364] vpe 489d0000.vpe: Device registered as /dev/video0
[ 2.045599] omap_hsmmc 4809c000.mmc: Got CD GPIO
[ 2.050929] vip 48970000.vip: VPDMA firmware loaded
[ 2.055126] vip 48990000.vip: VPDMA firmware loaded
[ 2.065136] vip 489b0000.vip: VPDMA firmware loaded
[ 2.075746] omap_hsmmc 480b4000.mmc: no pinctrl state for sdr25 mode
[ 2.082134] omap_hsmmc 480b4000.mmc: no pinctrl state for sdr12 mode
[ 2.088696] evm_3v3_sw: supplied by sysen1
[ 2.246214] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.254709] hwspinlock_user gatemp: requested 10 hwspinlocks
[ 2.262208] aic_dvdd: supplied by evm_3v3_sw
[ 2.269082] davinci-mcasp 48464000.mcasp: DAI is shared
[ 2.274952] davinci-mcasp 48468000.mcasp: ERRATA i868 workaround is enabled
[ 2.282224] davinci-mcasp 48474000.mcasp: DAI is shared
[ 2.287536] davinci-mcasp 48474000.mcasp: ERRATA i868 workaround is enabled
[ 2.294714] davinci-mcasp 4847c000.mcasp: invalid tdm slots: 0
[ 2.301790] omap-hdmi-audio omap-hdmi-audio.0.auto: snd-soc-dummy-dai <-> 58040000.encoder mapping ok
[ 2.322724] NET: Registered protocol family 10
[ 2.338027] sit: IPv6 over IPv4 tunneling driver
[ 2.343223] NET: Registered protocol family 17
[ 2.347973] Key type dns_resolver registered
[ 2.352406] omap_voltage_late_init: Voltage driver support not added
[ 2.359323] Adding alias for supply vdd,cpu0 -> vdd,4a003b20.oppdm
[ 2.365544] Adding alias for supply vbb,cpu0 -> vbb,4a003b20.oppdm
[ 2.372245] Adding alias for supply vdd,cpu0 -> vdd,4a003b20.oppdm
[ 2.378496] Adding alias for supply vbb,cpu0 -> vbb,4a003b20.oppdm
[ 2.386732] Power Management for TI OMAP4+ devices.
[ 2.391837] Registering SWP/SWPB emulation handler
[ 2.398728] dmm 4e000000.dmm: initialized all PAT entries
[ 2.416348] tvp5158 1-0058: Unable to of_probe
[ 2.421276] omap_hsmmc 4809c000.mmc: Got CD GPIO
[ 2.466520] asoc-simple-card sound@0: tlv320aic3x-hifi <-> 48468000.mcasp mapping ok
[ 2.486639] asoc-simple-card jamr3_sound: tlv320aic3x-hifi <-> 48474000.mcasp mapping ok
[ 2.517767] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 2.524409] [drm] No driver support for vblank timestamp query.
[ 2.531686] omapdss error: HDMI I2C Master Error
[ 2.539933] [drm] Enabling DMM ywrap scrolling
[ 2.548931] Console: switching to colour frame buffer device 128x48
[ 2.559036] omapdrm omapdrm.0: fb0: omapdrm frame buffer device
[ 2.595414] [drm] Initialized omapdrm 1.0.0 20110917 on minor 0
[ 2.601365] omapdss error: HDMI I2C Master Error
[ 2.606833] tvp5158 1-0058: Unable to of_probe
[ 2.611958] hctosys: unable to open rtc device (rtc0)
[ 2.625297] aic_dvdd: disabling
[ 2.628621] ldousb: disabling
[ 2.631993] ALSA device list:
[ 2.634969] #0: DRA7xx-EVM
[ 2.637867] #1: HDMI 58040000.encoder
[ 2.641713] #2: DRA7xx-JAMR3
[ 2.645464] Waiting for root device PARTUUID=77de00f1-02...
[ 3.010941] omapdss error: HDMI I2C Master Error
[ 3.192486] mmc2: host does not support reading read-only switch, assuming write-enable
[ 3.202576] mmc2: new high speed SDHC card at address 1234
[ 3.218427] mmcblk0: mmc2:1234 SA08G 7.29 GiB
[ 3.224381] mmcblk0: p1 p2
[ 3.228229] tvp5158 1-0058: Unable to of_probe
[ 3.342263] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.350426] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 3.367888] devtmpfs: mounted
[ 3.371000] Freeing unused kernel memory: 332K (c08ef000 - c0942000)
[ 3.377391] This architecture does not have kernel memory protection.
[ 3.706402] systemd[1]: System time before build time, advancing clock.
[ 3.743815] random: systemd: uninitialized urandom read (16 bytes read, 16 bits of entropy available)
[ 3.757772] random: systemd: uninitialized urandom read (16 bytes read, 16 bits of entropy available)
[ 3.769129] systemd[1]: systemd 229 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT +GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN)
[ 3.787586] systemd[1]: Detected architecture arm.

Welcome to Arago 2016.12!

[ 3.826993] systemd[1]: Set hostname to <dra7xx-evm>.
[ 3.905344] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 18 bits of entropy available)
[ 3.918725] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 18 bits of entropy available)
[ 3.932197] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 18 bits of entropy available)
[ 3.977290] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 19 bits of entropy available)
[ 3.994363] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 19 bits of entropy available)
[ 4.146485] random: systemd: uninitialized urandom read (16 bytes read, 22 bits of entropy available)
[ 4.155990] random: systemd: uninitialized urandom read (16 bytes read, 23 bits of entropy available)
[ 4.165848] random: systemd: uninitialized urandom read (16 bytes read, 23 bits of entropy available)
[ 4.513747] systemd[1]: sysinit.target: Found ordering cycle on sysinit.target/start
[ 4.521622] systemd[1]: sysinit.target: Found dependency on alignment.service/start
[ 4.529355] systemd[1]: sysinit.target: Found dependency on sysinit.target/start
[ 4.537659] systemd[1]: sysinit.target: Breaking ordering cycle by deleting job alignment.service/start
[ 4.547134] systemd[1]: alignment.service: Job alignment.service/start deleted to break ordering cycle starting with sysinit.target/start
[ SKIP ] Ordering cycle found, skipping alignment.service
[ 4.577623] systemd[1]: Listening on Journal Socket (/dev/log).
[ OK ] Listening on Journal Socket (/dev/log).
[ 4.595285] systemd[1]: Reached target Swap.
[ OK ] Reached target Swap.
[ 4.615531] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ OK ] Started Forward Password Requests to Wall Directory Watch.
[ 4.646542] systemd[1]: Created slice User and Session Slice.
[ OK ] Created slice User and Session Slice.
[ 4.675297] systemd[1]: Reached target Remote File Systems.
[ OK ] Reached target Remote File Systems.
[ 4.717622] systemd[1]: Listening on udev Kernel Socket.
[ OK ] Listening on udev Kernel Socket.
[ 4.745466] systemd[1]: Listening on Network Service Netlink Socket.
[ OK ] Listening on Network Service Netlink Socket.
[ 4.775870] systemd[1]: Created slice System Slice.
[ OK ] Created slice System Slice.
[ 4.805908] systemd[1]: Created slice system-getty.slice.
[ OK ] Created slice system-getty.slice.
[ 4.835290] systemd[1]: Reached target Slices.
[ OK ] Reached target Slices.
[ 4.855828] systemd[1]: Created slice system-serial\x2dgetty.slice.
[ OK ] Created slice system-serial\x2dgetty.slice.
[ 4.885391] systemd[1]: Listening on Syslog Socket.
[ OK ] Listening on Syslog Socket.
[ 4.905368] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[ OK ] Listening on /dev/initctl Compatibility Named Pipe.
[ 4.935415] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[ OK ] Started Dispatch Password Requests to Console Directory Watch.
[ 4.965270] systemd[1]: Reached target Paths.
[ OK ] Reached target Paths.
[ 4.985359] systemd[1]: Listening on udev Control Socket.
[ OK ] Listening on udev Control Socket.
[ 5.015375] systemd[1]: Listening on Journal Socket.
[ OK ] Listening on Journal Socket.
[ 5.065314] systemd[1]: Mounting Temporary Directory...
Mounting Temporary Directory...
[ 5.097297] systemd[1]: Starting Load Kernel Modules...
Starting Load Kernel Modules...
[ 5.127614] systemd[1]: Mounting POSIX Message Queue File System...
Mounting POSIX Message Queue File System...
[ 5.185495] systemd[1]: Starting Journal Service...
Starting Journal Service...
[ 5.207384] systemd[1]: Mounting Debug File System...
Mounting Debug File System...
[ 5.237793] systemd[1]: Starting Remount Root and Kernel File Systems...
Starting Remount Root and Kernel File Systems...
[ 5.257263] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 5.267858] systemd[1]: Starting Create Static Device Nodes in /dev...
Starting Create Static Device Nodes in /dev...
[ 5.307532] systemd[1]: Starting Setup Virtual Console...
Starting Setup Virtual Console...
[ 5.330616] systemd[1]: Mounted Debug File System.
[ OK ] Mounted Debug File System.
[ 5.355454] systemd[1]: Mounted POSIX Message Queue File System.
[ OK ] Mounted POSIX Message Queue File System.
[ 5.385424] systemd[1]: Mounted Temporary Directory.
[ OK ] Mounted Temporary Directory.
[ 5.415569] systemd[1]: Started Journal Service.
[ OK ] Started Journal Service.
[FAILED] Failed to start Load Kernel Modules.
See 'systemctl status systemd-modules-load.service' for details.
[ OK ] Started Remount Root and Kernel File Systems.
[ OK ] Started Create Static Device Nodes in /dev.
[ OK ] Started Setup Virtual Console.
Starting udev Kernel Device Manager...
[ OK ] Reached target Local File Systems (Pre).
Mounting /media/ram...
Mounting /var/volatile...
Starting udev Coldplug all Devices...
Starting Apply Kernel Variables...
Starting Flush Journal to Persistent Storage...
[ OK ] Mounted /var/volatile.
[ OK ] Mounted /media/ram.
[ OK ] Started udev Kernel Device Manager.
[ OK ] Started Apply Kernel Variables.
[ 6.319490] Unable to handle kernel paging request at virtual address ffefe1d8
[ 6.326782] pgd = ee34d800
[ 6.329498] [ffefe1d8] *pgd=80000080007003, *pmd=affae003, *pte=00c00000
[ 6.336300] Internal error: Oops: 207 [#1] PREEMPT SMP ARM
[ 6.341805] Modules linked in:
[ 6.344876] CPU: 0 PID: 208 Comm: udevadm Not tainted 4.4.45-dirty #2
[ 6.351339] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 6.357453] task: edf0aa00 ti: edeb6000 task.ti: edeb6000
[ 6.362876] PC is at handle_mm_fault+0xd94/0x12f4
[ 6.367597] LR is at handle_mm_fault+0xd94/0x12f4
[ 6.372316] pc : [<c00f9d68>] lr : [<c00f9d68>] psr: 60030113
[ 6.372316] sp : edeb7e10 ip : edeb7e10 fp : edeb7eac
[ 6.383839] r10: 7fa3b000 r9 : 000001d8 r8 : ee45f6f8
[ 6.389081] r7 : efee827c r6 : ee45f6c0 r5 : ffefe000 r4 : ede072a0
[ 6.395631] r3 : 00000777 r2 : 00000777 r1 : 00000000 r0 : ee45f6f8
[ 6.402181] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 6.409343] Control: 30c5387d Table: ae34d800 DAC: fffffffd
[ 6.415108] Process udevadm (pid: 208, stack limit = 0xedeb6210)
[ 6.421134] Stack: (0xedeb7e10 to 0xedeb8000)
[ 6.425504] 7e00: edeb7e34 edeb7e20 c0182ed8 c0182084
[ 6.433713] 7e20: ee34dbc0 00000000 edeb7e4c edeb7e38 00000000 00000000 ede53b00 ede90fe8
[ 6.441922] 7e40: c0947590 00000fe8 ede90000 00000040 00000000 00000000 dad6775f 00e00000
[ 6.450130] 7e60: 00000001 eec0b400 00000001 00000000 ee45f6c0 ee34dbc0 7fa3b054 edf0aa00
[ 6.458339] 7e80: edeb7eac edeb7fb0 edf0aa00 ee45f6c0 00000a07 7fa3b054 ee45f6fc 00000055
[ 6.466549] 7ea0: edeb7efc edeb7eb0 c001ce88 c00f8fe0 00000000 edf5cd80 edeb7f80 c0183770
[ 6.474757] 7ec0: 00001000 00001000 00000800 00000000 edeb7f4c c0948edc 00000a07 c001cc00
[ 6.482966] 7ee0: 7fa3b054 edeb7fb0 00000000 0001bfb0 edeb7fac edeb7f00 c0009298 c001cc0c
[ 6.491174] 7f00: 00000001 edf5cd88 00000000 00000022 00000001 00000000 00000000 00000000
[ 6.499382] 7f20: edeb7f74 00000020 b6f85000 edf5cd80 edeb7f80 00001000 c000fc84 edeb6000
[ 6.507589] 7f40: edeb7f7c edeb7f50 c012061c c011fdd0 00000000 00000000 edf5cd80 edf5cd80
[ 6.515797] 7f60: b6f85000 00001000 c000fc84 edeb6000 edeb7fa4 edeb7f80 c0120f08 c01205a8
[ 6.524006] 7f80: 00000020 00000000 7fa38ee8 b6eb207a 60030030 ffffffff 30c5387d 30c5387d
[ 6.532215] 7fa0: 00000000 edeb7fb0 c0014100 c000926c 7fa39050 00001009 00002009 0001bfb1
[ 6.540424] 7fc0: 00001008 7fa39048 7fa3b050 b6f487a8 7fa3a050 00000000 0001bfb0 bee756f0
[ 6.548632] 7fe0: 7f684d40 bee755a8 00000000 b6eb207a 60030030 ffffffff f1277724 65c776d5
[ 6.556837] Backtrace:
[ 6.559300] [<c00f8fd4>] (handle_mm_fault) from [<c001ce88>] (do_page_fault+0x288/0x358)
[ 6.567420] r10:00000055 r9:ee45f6fc r8:7fa3b054 r7:00000a07 r6:ee45f6c0 r5:edf0aa00
[ 6.575310] r4:edeb7fb0
[ 6.577857] [<c001cc00>] (do_page_fault) from [<c0009298>] (do_DataAbort+0x38/0xb8)
[ 6.585540] r10:0001bfb0 r9:00000000 r8:edeb7fb0 r7:7fa3b054 r6:c001cc00 r5:00000a07
[ 6.593433] r4:c0948edc
[ 6.595979] [<c0009260>] (do_DataAbort) from [<c0014100>] (__dabt_usr+0x40/0x60)
[ 6.603401] Exception stack(0xedeb7fb0 to 0xedeb7ff8)
[ 6.608469] 7fa0: 7fa39050 00001009 00002009 0001bfb1
[ 6.616679] 7fc0: 00001008 7fa39048 7fa3b050 b6f487a8 7fa3a050 00000000 0001bfb0 bee756f0
[ 6.624887] 7fe0: 7f684d40 bee755a8 00000000 b6eb207a 60030030 ffffffff
[ 6.631523] r8:30c5387d r7:30c5387d r6:ffffffff r5:60030030 r4:b6eb207a
[ 6.638283] Code: ebfc977a e1a05000 e1a00008 eb160a31 (e18520d9)
[ 6.644449] ---[ end trace 482461f0c0a1fe4c ]---
[ 6.649104] note: udevadm[208] exited with preempt_count 2
[ 27.355087] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 27.360773] (detected by 0, t=2102 jiffies, g=-69, c=-70, q=82)
[ 27.366810] All QSes seen, last rcu_preempt kthread activity 2102 (-27276--29378), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 27.378157] udevadm R running 0 208 1 0x00000002
[ 27.384545] Backtrace:
[ 27.387009] [<c00131b8>] (dump_backtrace) from [<c00133b4>] (show_stack+0x18/0x1c)
[ 27.394605] r7:edeb7818 r6:00000001 r5:00000001 r4:edf0aa00
[ 27.400314] [<c001339c>] (show_stack) from [<c005b470>] (sched_show_task+0xbc/0x110)
[ 27.408089] [<c005b3b4>] (sched_show_task) from [<c008e178>] (rcu_check_callbacks+0x918/0x92c)
[ 27.416733] r5:2e86d000 r4:c09416c0
[ 27.420333] [<c008d860>] (rcu_check_callbacks) from [<c00911a4>] (update_process_times+0x44/0x6c)
[ 27.429237] r10:c00a1ed8 r9:00000001 r8:ef1abc4c r7:00000006 r6:00000000 r5:edf0aa00
[ 27.437128] r4:ffffe000
[ 27.439676] [<c0091160>] (update_process_times) from [<c00a1ed4>] (tick_sched_handle+0x50/0x54)
[ 27.448407] r7:00000006 r6:57a16e3d r5:edeb7a38 r4:ef1abe50
[ 27.454115] [<c00a1e84>] (tick_sched_handle) from [<c00a1f28>] (tick_sched_timer+0x50/0x94)
[ 27.462500] [<c00a1ed8>] (tick_sched_timer) from [<c0091bb4>] (__hrtimer_run_queues+0x11c/0x1ac)
[ 27.471317] r7:00000000 r6:ef1abc40 r5:ef1abe50 r4:ef1abc00
[ 27.477025] [<c0091a98>] (__hrtimer_run_queues) from [<c0092244>] (hrtimer_interrupt+0xac/0x1f8)
[ 27.485842] r10:ef1abc78 r9:ef1abcb8 r8:ef1abc98 r7:ef1abc14 r6:ffffffff r5:00000003
[ 27.493732] r4:ef1abc00
[ 27.496281] [<c0092198>] (hrtimer_interrupt) from [<c04f5b2c>] (arch_timer_handler_phys+0x38/0x40)
[ 27.505272] r10:7f61c000 r9:edeb7b70 r8:00000012 r7:eec430c0 r6:c096ef48 r5:eec06d80
[ 27.513163] r4:ef1b0c00
[ 27.515710] [<c04f5af4>] (arch_timer_handler_phys) from [<c0084160>] (handle_percpu_devid_irq+0x74/0x8c)
[ 27.525229] [<c00840ec>] (handle_percpu_devid_irq) from [<c007fc8c>] (generic_handle_irq+0x2c/0x3c)
[ 27.534307] r9:edeb7b70 r8:eec08000 r7:00000000 r6:00000000 r5:00000012 r4:c093f424
[ 27.542113] [<c007fc60>] (generic_handle_irq) from [<c007ff64>] (__handle_domain_irq+0x64/0xbc)
[ 27.550846] [<c007ff00>] (__handle_domain_irq) from [<c000948c>] (gic_handle_irq+0x40/0x7c)
[ 27.559226] r9:edeb7b70 r8:fa213000 r7:fa212000 r6:edeb7a38 r5:fa21200c r4:c09448dc
[ 27.567031] [<c000944c>] (gic_handle_irq) from [<c0013e80>] (__irq_svc+0x40/0x74)
[ 27.574540] Exception stack(0xedeb7a38 to 0xedeb7a80)
[ 27.579609] 7a20: ee45f6f8 00000000
[ 27.587818] 7a40: 00000778 00000777 eddda0d8 00000000 edeb7b70 edeb7b70 7f670000 edeb7b70
[ 27.596025] 7a60: 7f61c000 edeb7a94 edeb7a98 edeb7a88 c00f6910 c067c680 20030113 ffffffff
[ 27.604231] r9:edeb7b70 r8:7f670000 r7:edeb7a6c r6:ffffffff r5:20030113 r4:c067c680
[ 27.612041] [<c067c630>] (_raw_spin_lock) from [<c00f6910>] (unmap_single_vma+0x234/0x68c)
[ 27.620338] [<c00f66dc>] (unmap_single_vma) from [<c00f7814>] (unmap_vmas+0x5c/0x70)
[ 27.628108] r10:c081e8a0 r9:c081e898 r8:00000000 r7:00000000 r6:edeb7b70 r5:ffffffff
[ 27.635994] r4:ede075a0
[ 27.638540] [<c00f77b8>] (unmap_vmas) from [<c00ff368>] (exit_mmap+0xf0/0x1fc)
[ 27.645787] r8:ee45f6fc r7:ee45f6c0 r6:00000001 r5:edeb7ba0 r4:ede075a0
[ 27.652546] [<c00ff278>] (exit_mmap) from [<c003280c>] (mmput+0x48/0xf4)
[ 27.659270] r6:00000001 r5:00000000 r4:ee45f6c0
[ 27.663921] [<c00327c4>] (mmput) from [<c0037938>] (do_exit+0x2ac/0x9b8)
[ 27.670645] r5:edf0ae78 r4:edf0aa00
[ 27.674243] [<c003768c>] (do_exit) from [<c0013604>] (die+0x24c/0x424)
[ 27.680792] r7:00000001
[ 27.683339] [<c00133b8>] (die) from [<c0021c0c>] (__do_kernel_fault.part.0+0x6c/0x1ec)
[ 27.691284] r10:7fa3b000 r9:000001d8 r8:ffefe1d8 r7:ee45f6c0 r6:00000207 r5:edeb7dc0
[ 27.699170] r4:ffefe1d8
[ 27.701715] [<c0021ba0>] (__do_kernel_fault.part.0) from [<c001cf4c>] (do_page_fault+0x34c/0x358)
[ 27.710620] r7:00000207 r4:edeb7dc0
[ 27.714217] [<c001cc00>] (do_page_fault) from [<c0009298>] (do_DataAbort+0x38/0xb8)
[ 27.721901] r10:7fa3b000 r9:000001d8 r8:edeb7dc0 r7:ffefe1d8 r6:c001cc00 r5:00000207
[ 27.729790] r4:c0948edc
[ 27.732334] [<c0009260>] (do_DataAbort) from [<c0013e18>] (__dabt_svc+0x38/0x60)
[ 27.739755] Exception stack(0xedeb7dc0 to 0xedeb7e08)
[ 27.744825] 7dc0: ee45f6f8 00000000 00000777 00000777 ede072a0 ffefe000 ee45f6c0 efee827c
[ 27.753033] 7de0: ee45f6f8 000001d8 7fa3b000 edeb7eac edeb7e10 edeb7e10 c00f9d68 c00f9d68
[ 27.761240] 7e00: 60030113 ffffffff
[ 27.764737] r8:ee45f6f8 r7:edeb7df4 r6:ffffffff r5:60030113 r4:c00f9d68
[ 27.771493] [<c00f8fd4>] (handle_mm_fault) from [<c001ce88>] (do_page_fault+0x288/0x358)
[ 27.779612] r10:00000055 r9:ee45f6fc r8:7fa3b054 r7:00000a07 r6:ee45f6c0 r5:edf0aa00
[ 27.787501] r4:edeb7fb0
[ 27.790046] [<c001cc00>] (do_page_fault) from [<c0009298>] (do_DataAbort+0x38/0xb8)
[ 27.797730] r10:0001bfb0 r9:00000000 r8:edeb7fb0 r7:7fa3b054 r6:c001cc00 r5:00000a07
[ 27.805617] r4:c0948edc
[ 27.808162] [<c0009260>] (do_DataAbort) from [<c0014100>] (__dabt_usr+0x40/0x60)
[ 27.815584] Exception stack(0xedeb7fb0 to 0xedeb7ff8)
[ 27.820652] 7fa0: 7fa39050 00001009 00002009 0001bfb1
[ 27.828861] 7fc0: 00001008 7fa39048 7fa3b050 b6f487a8 7fa3a050 00000000 0001bfb0 bee756f0
[ 27.837069] 7fe0: 7f684d40 bee755a8 00000000 b6eb207a 60030030 ffffffff
[ 27.843705] r8:30c5387d r7:30c5387d r6:ffffffff r5:60030030 r4:b6eb207a
[ 27.850466] rcu_preempt kthread starved for 2102 jiffies! g4294967227 c4294967226 f0x2 s3 ->state=0x0

//========================================================//

please advise and thanks for your help.

BR
Yimin