Re: [PATCH v3 0/8] arm64: rockchip: Initial GeekBox enablement

[Tomeu Vizoso <tomeu@tomeuvizoso.net>]

[-- Attachment #1: Type: text/plain, Size: 1684 bytes --]

On 8 March 2016 at 16:45, Dinh Nguyen <dinh.linux@gmail.com> wrote:
> On Tue, Mar 8, 2016 at 1:24 AM, Giuseppe CAVALLARO
> <peppe.cavallaro@st.com> wrote:
>> Hi Dinh,
>>
>> On 3/8/2016 12:22 AM, Dinh Nguyen wrote:
>> [snip]
>>>
>>>
>>> I'm seeing the same issue on the SoCFPGA platform:
>>>
>>> libphy: PHY stmmac-0:ffffffff not found
>>> eth0: Could not attach to PHY
>>> stmmac_open: Cannot attach to PHY (error: -19)
>>>
>>> If I just revert:
>>>
>>>   "stmmac: Fix 'eth0: No PHY found' regression"
>>>
>>> then the issue goes away.
>>
>>
>> do you have this patch "stmmac: first frame prep at the end of xmit routine"
>> ? Or you just reverted
>>   "stmmac: Fix 'eth0: No PHY found' regression"
>
> I only reverted "stmmac: Fix 'eth0: No PHY found' regression". I do have the
> patch "stmmac: first frame prep at the end of the xmit routine", but I did not
> need to revert that patch.

Hi,

in order to get the onboard network on the Radxa Rock2 to work at all
on today's linux-next, I had to revert both commits:

* "stmmac: Fix 'eth0: No PHY found' regression" for the drivers to
probe and the link to come up, and

* "stmmac: first frame prep at the end of the xmit routine" for the
network interface to work at all.

But a few seconds into the nfsroot boot I start getting:

[    9.136701] systemd[1]: Started Load Kernel Modules.
[   18.116321] nfs: server 10.42.0.1 not responding, still trying
[   18.516224] ------------[ cut here ]------------
[   18.521024] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:303
dev_watchdog+0x284/0x288
[   18.529456] NETDEV WATCHDOG: eth0 (rk_gmac-dwmac): transmit queue 0 timed out

I'm attaching the full boot log.

Regards,

Tomeu

[-- Attachment #2: rock2.log --]
[-- Type: text/x-log, Size: 37321 bytes --]

[    0.000000] Booting Linux on physical CPU 0x500
[    0.000000] Linux version 4.5.0-rc7-next-20160309-00002-g1a605aab9b29 (tomeu@cizrna) (gcc version 5.3.1 20160212 (Red Hat Cross 5.3.1-2) (GCC) ) #3678 SMP Wed Mar 9 09:09:58 CET 2016
[    0.000000] CPU: ARMv7 Processor [410fc0d1] revision 1 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine model: Radxa Rock 2 Square
[    0.000000] debug: ignoring loglevel setting.
[    0.000000] cma: Reserved 64 MiB at 0x7c000000
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 524288
[    0.000000] free_area_init_node: node 0, pgdat c140c780, node_mem_map eeff9000
[    0.000000]   DMA zone: 1536 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 196608 pages, LIFO batch:31
[    0.000000]   HighMem zone: 327680 pages, LIFO batch:31
[    0.000000] percpu: Embedded 13 pages/cpu @eef9f000 s23692 r8192 d21364 u53248
[    0.000000] pcpu-alloc: s23692 r8192 d21364 u53248 alloc=13*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 522752
[    0.000000] Kernel command line: console=ttyS2,115200 console=tty0 rw rootwait root=/dev/nfs nfsroot=10.42.0.1:/home/tomeu/nfsroot,vers=3 ip=dhcp ignore_loglevel log_buf_len=16M drm.debug
=0x00 no_console_suspend
[    0.000000] log_buf_len: 16777216 bytes
[    0.000000] early log buf free: 129528(98%)
[    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: 1979820K/2097152K available (9464K kernel code, 1081K rwdata, 4212K rodata, 2048K init, 339K bss, 51796K reserved, 65536K cma-reserved, 1245184K 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 : 0xc0208000 - 0xc105b15c   (14669 kB)
[    0.000000]       .init : 0xc1100000 - 0xc1300000   (2048 kB)
[    0.000000]       .data : 0xc1300000 - 0xc140e7c0   (1082 kB)
[    0.000000]        .bss : 0xc1410000 - 0xc1464db8   ( 340 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  Build-time adjustment of leaf fanout to 32.
[    0.000000]  RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=4.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=4
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] Architected cp15 timer(s) running at 24.00MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[    0.000006] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000022] Switching to timer-based delay loop, resolution 41ns
[    0.003799] Console: colour dummy device 80x30
[    0.004605] console [tty0] enabled
[    0.004650] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=120000)
[    0.004699] pid_max: default: 32768 minimum: 301
[    0.004846] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.004880] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.005536] CPU: Testing write buffer coherency: ok
[    0.005782] CPU0: thread -1, cpu 0, socket 5, mpidr 80000500
[    0.006023] Setting up static identity map for 0x300000 - 0x300098
[    0.011363] CPU1: thread -1, cpu 1, socket 5, mpidr 80000501
[    0.013026] CPU2: thread -1, cpu 2, socket 5, mpidr 80000502
[    0.014663] CPU3: thread -1, cpu 3, socket 5, mpidr 80000503
[    0.014759] Brought up 4 CPUs
[    0.014877] SMP: Total of 4 processors activated (192.00 BogoMIPS).
[    0.014904] CPU: All CPU(s) started in SVC mode.
[    0.016208] devtmpfs: initialized
[    0.026190] VFP support v0.3: implementor 41 architecture 3 part 30 variant d rev 0
[    0.026947] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302231375000 ns
[    0.029040] pinctrl core: initialized pinctrl subsystem
[    0.031024] NET: Registered protocol family 16
[    0.033357] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.050016] cpuidle: using governor menu
[    0.072445] No ATAGs?
[    0.072489] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.072546] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.077716] Serial: AMBA PL011 UART driver
[    0.105113] vcc_sys: Failed to create debugfs directory
[    0.108851] iommu: Adding device ff930000.vop to group 0
[    0.108952] iommu: Adding device ff940000.vop to group 1
[    0.109175] rk_iommu ff930300.iommu: invalid resource
[    0.109307] rk_iommu ff940300.iommu: invalid resource
[    0.109741] vgaarb: loaded
[    0.110838] SCSI subsystem initialized
[    0.111057] libata version 3.00 loaded.
[    0.111396] usbcore: registered new interface driver usbfs
[    0.111485] usbcore: registered new interface driver hub
[    0.111572] usbcore: registered new device driver usb
[    0.113143] pps_core: LinuxPPS API ver. 1 registered
[    0.113173] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.113240] PTP clock support registered
[    0.113476] EDAC MC: Ver: 3.0.0
[    0.116173] clocksource: Switched to clocksource arch_sys_counter
[    0.128116] NET: Registered protocol family 2
[    0.128729] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.128860] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.129068] TCP: Hash tables configured (established 8192 bind 8192)
[    0.129146] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.129211] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.129423] NET: Registered protocol family 1
[    0.129708] RPC: Registered named UNIX socket transport module.
[    0.129740] RPC: Registered udp transport module.
[    0.129765] RPC: Registered tcp transport module.
[    0.129789] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.129828] PCI: CLS 0 bytes, default 64
[    0.130714] hw perfevents: enabled with armv7_cortex_a12 PMU driver, 7 counters available
[    0.132628] futex hash table entries: 1024 (order: 4, 65536 bytes)
[    0.133523] workingset: timestamp_bits=28 max_order=19 bucket_order=0
[    0.145220] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.146260] NFS: Registering the id_resolver key type
[    0.146312] Key type id_resolver registered
[    0.146338] Key type id_legacy registered
[    0.146448] ntfs: driver 2.1.32 [Flags: R/O].
[    0.147904] bounce: pool size: 64 pages
[    0.148147] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[    0.148199] io scheduler noop registered
[    0.148229] io scheduler deadline registered
[    0.148285] io scheduler cfq registered (default)
[    0.165943] dma-pl330 ff250000.dma-controller: Loaded driver for PL330 DMAC-241330
[    0.165996] dma-pl330 ff250000.dma-controller:       DBUFF-128x8bytes Num_Chans-8 Num_Peri-20 Num_Events-16
[    0.166907] dma-pl330 ffb20000.dma-controller: Loaded driver for PL330 DMAC-241330
[    0.166960] dma-pl330 ffb20000.dma-controller:       DBUFF-64x8bytes Num_Chans-5 Num_Peri-6 Num_Events-10
[    0.233974] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[    0.236402] console [ttyS2] disabled
[    0.236459] ff690000.serial: ttyS2 at MMIO 0xff690000 (irq = 33, base_baud = 1500000) is a 16550A
[    0.950690] console [ttyS2] enabled
[    0.955745] SuperH (H)SCI(F) driver initialized
[    0.961396] msm_serial: driver initialized
[    0.965727] STMicroelectronics ASC driver initialized
[    0.972715] [drm] Initialized drm 1.1.0 20060810
[    0.992956] brd: module loaded
[    1.002486] loop: module loaded
[    1.014437] libphy: Fixed MDIO Bus: probed
[    1.019318] CAN device driver interface
[    1.025220] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.3.0-k
[    1.032219] igb: Copyright (c) 2007-2014 Intel Corporation.
[    1.040261] rk_gmac-dwmac ff290000.ethernet: phy regulator is not available yet, deferred probing
[    1.051056] pegasus: v0.9.3 (2013/04/25), Pegasus/Pegasus II USB Ethernet driver
[    1.058568] usbcore: registered new interface driver pegasus
[    1.064341] usbcore: registered new interface driver asix
[    1.069838] usbcore: registered new interface driver ax88179_178a
[    1.076034] usbcore: registered new interface driver cdc_ether
[    1.081978] usbcore: registered new interface driver smsc75xx
[    1.087839] usbcore: registered new interface driver smsc95xx
[    1.093682] usbcore: registered new interface driver net1080
[    1.099440] usbcore: registered new interface driver cdc_subset
[    1.105455] usbcore: registered new interface driver zaurus
[    1.111195] usbcore: registered new interface driver cdc_ncm
[    1.118756] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.125334] ehci-pci: EHCI PCI platform driver
[    1.129878] ehci-platform: EHCI generic platform driver
[    1.135469] ehci-omap: OMAP-EHCI Host Controller driver
[    1.140900] ehci-orion: EHCI orion driver
[    1.145108] SPEAr-ehci: EHCI SPEAr driver
[    1.149318] ehci-st: EHCI STMicroelectronics driver
[    1.154397] ehci-exynos: EHCI EXYNOS driver
[    1.158801] ehci-atmel: EHCI Atmel driver
[    1.163007] tegra-ehci: Tegra EHCI driver
[    1.167241] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    1.173478] ohci-pci: OHCI PCI platform driver
[    1.178027] ohci-platform: OHCI generic platform driver
[    1.183480] ohci-omap3: OHCI OMAP3 driver
[    1.187692] SPEAr-ohci: OHCI SPEAr driver
[    1.191906] ohci-st: OHCI STMicroelectronics driver
[    1.196983] ohci-atmel: OHCI Atmel driver
[    1.201859] usbcore: registered new interface driver usb-storage
[    1.209737] mousedev: PS/2 mouse device common for all mice
[    1.219227] i2c /dev entries driver
[    1.224151] rk3x-i2c ff170000.i2c: using default SCL frequency: 100000
[    1.231239] rk3x-i2c ff170000.i2c: Initialized RK3xxx I2C bus at f0952000
[    1.238196] rk3x-i2c ff650000.i2c: using default SCL frequency: 100000
[    1.270761] fan53555-regulator 0-0040: FAN53555 Option[8] Rev[1] Detected!
[    1.281994] fan53555-regulator 0-0041: FAN53555 Option[8] Rev[1] Detected!
[    1.292149] rk3x-i2c ff650000.i2c: Initialized RK3xxx I2C bus at f0954000
[    1.301340] VCC_IO: supplied by vcc_sys
[    1.306860] VCC_20: supplied by vcc_sys
[    1.311259] VCC_18: supplied by VCC_20
[    1.317150] vcc_sys: supplied by VCC_IO
[    1.321628] VCCIO_PMU: supplied by vcc_sys
[    1.330514] VCCIO_SD: supplied by VCC_IO
[    1.342480] watchdog: Invalid min and max timeout values, resetting to 0!
[    1.351933] vdd_cpu: supplied by vcc_sys
[    1.358469] cpufreq: cpufreq_online: CPU0: Running at unlisted freq: 500000 KHz
[    1.366084] cpufreq: cpufreq_online: CPU0: Unlisted initial frequency changed to: 600000 KHz
[    1.376024] sdhci: Secure Digital Host Controller Interface driver
[    1.382238] sdhci: Copyright(c) Pierre Ossman
[    1.387964] Synopsys Designware Multimedia Card Interface Driver
[    1.394681] dwmmc_rockchip ff0c0000.dwmmc: IDMAC supports 32-bit address mode.
[    1.401938] dwmmc_rockchip ff0c0000.dwmmc: Using internal DMA controller.
[    1.408727] dwmmc_rockchip ff0c0000.dwmmc: Version ID is 270a
[    1.414488] dwmmc_rockchip ff0c0000.dwmmc: DW MMC controller at irq 29,32 bit host data width,256 deep fifo
[    1.424247] vcc_sd: supplied by VCC_IO
[    1.441185] mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[    1.461172] dwmmc_rockchip ff0c0000.dwmmc: 1 slots initialized
[    1.467178] dwmmc_rockchip ff0d0000.dwmmc: IDMAC supports 32-bit address mode.
[    1.475567] dwmmc_rockchip ff0d0000.dwmmc: Using internal DMA controller.
[    1.482366] dwmmc_rockchip ff0d0000.dwmmc: Version ID is 270a
[    1.488136] dwmmc_rockchip ff0d0000.dwmmc: DW MMC controller at irq 30,32 bit host data width,256 deep fifo
[    1.499701] dwmmc_rockchip ff0f0000.dwmmc: IDMAC supports 32-bit address mode.
[    1.506965] dwmmc_rockchip ff0f0000.dwmmc: Using internal DMA controller.
[    1.513763] dwmmc_rockchip ff0f0000.dwmmc: Version ID is 270a
[    1.519532] dwmmc_rockchip ff0f0000.dwmmc: DW MMC controller at irq 31,32 bit host data width,256 deep fifo
[    1.529894] dwmmc_rockchip ff0f0000.dwmmc: allocated mmc-pwrseq
[    1.551407] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[    1.571179] dwmmc_rockchip ff0f0000.dwmmc: 1 slots initialized
[    1.577309] sdhci-pltfm: SDHCI platform and OF driver helper
[    1.584113] ledtrig-cpu: registered to indicate activity on CPUs
[    1.590355] usbcore: registered new interface driver usbhid
[    1.595932] usbhid: USB HID core driver
[    1.602165] NET: Registered protocol family 10
[    1.606982] sit: IPv6 over IPv4 tunneling driver
[    1.611927] NET: Registered protocol family 17
[    1.616390] can: controller area network core (rev 20120528 abi 9)
[    1.622603] NET: Registered protocol family 29
[    1.627057] can: raw protocol (rev 20120528)
[    1.631335] can: broadcast manager protocol (rev 20120528 t)
[    1.637002] can: netlink gateway (rev 20130117) max_hops=1
[    1.642681] Key type dns_resolver registered
[    1.647095] ThumbEE CPU extension supported.
[    1.651382] Registering SWP/SWPB emulation handler
[    1.658144] rk_gmac-dwmac ff290000.ethernet: clock input or output? (input).
[    1.665208] rk_gmac-dwmac ff290000.ethernet: TX delay(0x30).
[    1.670872] rk_gmac-dwmac ff290000.ethernet: RX delay(0x10).
[    1.676539] rk_gmac-dwmac ff290000.ethernet: init for RGMII
[    1.682151] rk_gmac-dwmac ff290000.ethernet: clock input from PHY
[    1.693266] stmmac - user ID: 0x10, Synopsys ID: 0x35
[    1.698316]  Ring mode enabled
[    1.701370]  DMA HW capability register supported
[    1.705890]  Normal descriptors
[    1.709219]  RX Checksum Offload Engine supported (type 2)
[    1.714700]  TX Checksum insertion supported
[    1.714967] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 52000000Hz, actual 50000000HZ div = 0)
[    1.715267] mmc1: new high speed MMC card at address 0001
[    1.715445] mmcblk0: mmc1:0001 032GE4 29.1 GiB
[    1.715511] mmcblk0boot0: mmc1:0001 032GE4 partition 1 4.00 MiB
[    1.715576] mmcblk0boot1: mmc1:0001 032GE4 partition 2 4.00 MiB
[    1.750450]  Wake-Up On Lan supported
[    1.754130]  Enable RX Mitigation via HW Watchdog Timer
[    1.759625] rk_gmac-dwmac ff290000.ethernet eth0: No MDIO subnode found
[    1.819914] libphy: stmmac: probed
[    1.823323] eth0: PHY ID 001cc915 at 0 IRQ POLL (stmmac-0:00) active
[    1.829676] eth0: PHY ID 001cc915 at 1 IRQ POLL (stmmac-0:01)
[    1.836618] dwmmc_rockchip ff0d0000.dwmmc: IDMAC supports 32-bit address mode.
[    1.843887] dwmmc_rockchip ff0d0000.dwmmc: Using internal DMA controller.
[    1.850676] dwmmc_rockchip ff0d0000.dwmmc: Version ID is 270a
[    1.856431] dwmmc_rockchip ff0d0000.dwmmc: DW MMC controller at irq 30,32 bit host data width,256 deep fifo
[    1.867572] hctosys: unable to open rtc device (rtc0)
[    1.888555] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    7.876704] rk_gmac-dwmac ff290000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[    7.886213] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    7.901274] Sending DHCP requests ., OK
[    7.966192] IP-Config: Got DHCP answer from 10.42.0.1, my address is 10.42.0.251
[    7.973961] IP-Config: Complete:
[    7.977274]      device=eth0, hwaddr=1a:75:6b:5e:1d:a7, ipaddr=10.42.0.251, mask=255.255.255.0, gw=10.42.0.1
[    7.987186]      host=10.42.0.251, domain=, nis-domain=(none)
[    7.992985]      bootserver=10.42.0.1, rootserver=10.42.0.1, rootpath=     nameserver0=10.42.0.1
[    8.001942] vcc_sd: disabling
[    8.018553] VFS: Mounted root (nfs filesystem) on device 0:13.
[    8.024999] devtmpfs: mounted
[    8.030012] Freeing unused kernel memory: 2048K (c1100000 - c1300000)
[    8.266343] random: systemd urandom read with 15 bits of entropy available
[    8.278232] systemd[1]: systemd 228 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUT
ILS +KMOD -IDN)
[    8.297174] systemd[1]: Detected architecture arm.
[    8.307442] systemd[1]: Set hostname to <singularity>.
[    8.378108] ttyS2 - failed to request DMA
[    8.883579] systemd[1]: fstrim.timer: Cannot add dependency job, ignoring: Unit fstrim.timer failed to load: No such file or directory.
[    8.896133] systemd[1]: display-manager.service: Cannot add dependency job, ignoring: Unit display-manager.service failed to load: No such file or directory.
[    8.913610] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[    8.921687] systemd[1]: Created slice User and Session Slice.
[    8.927780] systemd[1]: Listening on Device-mapper event daemon FIFOs.
[    8.935216] systemd[1]: Listening on LVM2 poll daemon socket.
[    8.941202] systemd[1]: Reached target Swap.
[    8.946324] systemd[1]: Listening on Journal Socket (/dev/log).
[    8.952580] systemd[1]: Listening on Journal Socket.
[    8.958406] systemd[1]: Listening on udev Control Socket.
[    8.964147] systemd[1]: Created slice System Slice.
[    8.991361] systemd[1]: Starting Load Kernel Modules...
[    8.996894] systemd[1]: Created slice system-serial\x2dgetty.slice.
[    9.003311] systemd[1]: Reached target Slices.
[    9.008537] systemd[1]: Mounting Debug File System...
[    9.013868] systemd[1]: Created slice system-getty.slice.
[    9.019451] systemd[1]: Reached target Encrypted Volumes.
[    9.025087] systemd[1]: Listening on LVM2 metadata daemon socket.
[    9.031357] systemd[1]: Listening on udev Kernel Socket.
[    9.071378] systemd[1]: Starting Journal Service...
[    9.076459] systemd[1]: Reached target Remote File Systems (Pre).
[    9.082744] systemd[1]: Reached target Remote File Systems.
[    9.089950] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[    9.099935] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[    9.107971] systemd[1]: Starting Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling...
[    9.123541] systemd[1]: Starting LSB: Set console font and keymap...
[    9.131313] systemd[1]: Mounted Debug File System.
[    9.136701] systemd[1]: Started Load Kernel Modules.
[   18.116321] nfs: server 10.42.0.1 not responding, still trying
[   18.516224] ------------[ cut here ]------------
[   18.521024] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:303 dev_watchdog+0x284/0x288
[   18.529456] NETDEV WATCHDOG: eth0 (rk_gmac-dwmac): transmit queue 0 timed out
[   18.536690] Modules linked in:
[   18.539889] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[   18.549431] Hardware name: Rockchip (Device Tree)
[   18.554289] [<c0310390>] (unwind_backtrace) from [<c030ba88>] (show_stack+0x10/0x14)
[   18.562221] [<c030ba88>] (show_stack) from [<c05904a8>] (dump_stack+0x90/0xa4)
[   18.569634] [<c05904a8>] (dump_stack) from [<c0341c6c>] (__warn+0xe8/0x100)
[   18.576732] [<c0341c6c>] (__warn) from [<c0341cbc>] (warn_slowpath_fmt+0x38/0x48)
[   18.584406] [<c0341cbc>] (warn_slowpath_fmt) from [<c0a7b598>] (dev_watchdog+0x284/0x288)
[   18.592781] [<c0a7b598>] (dev_watchdog) from [<c0394528>] (call_timer_fn+0x24/0x98)
[   18.600628] [<c0394528>] (call_timer_fn) from [<c0394738>] (run_timer_softirq+0x19c/0x214)
[   18.609086] [<c0394738>] (run_timer_softirq) from [<c0346098>] (__do_softirq+0xfc/0x214)
[   18.617358] [<c0346098>] (__do_softirq) from [<c0346450>] (irq_exit+0xb0/0x118)
[   18.624839] [<c0346450>] (irq_exit) from [<c0385120>] (__handle_domain_irq+0x60/0xb4)
[   18.632845] [<c0385120>] (__handle_domain_irq) from [<c030177c>] (gic_handle_irq+0x54/0x94)
[   18.641369] [<c030177c>] (gic_handle_irq) from [<c030c5d4>] (__irq_svc+0x54/0x70)
[   18.648997] Exception stack(0xed0abf88 to 0xed0abfd0)
[   18.654164] bf80:                   00000001 00000000 00000000 c031b220 ed0aa000 c13024a4
[   18.662516] bfa0: 00000000 00000000 c1208580 c1302504 c130250c c140e568 00000000 ed0abfd8
[   18.670850] bfc0: c030888c c0308890 600f0013 ffffffff
[   18.676031] [<c030c5d4>] (__irq_svc) from [<c0308890>] (arch_cpu_idle+0x38/0x3c)
[   18.683615] [<c0308890>] (arch_cpu_idle) from [<c0379124>] (cpu_startup_entry+0x1b8/0x21c)
[   18.692055] [<c0379124>] (cpu_startup_entry) from [<00301c6c>] (0x301c6c)
[   18.698948] ---[ end trace 9f6653e6701f8dc4 ]---
[   22.536324] nfs: server 10.42.0.1 not responding, still trying
[   26.956295] nfs: server 10.42.0.1 not responding, still trying
[   31.376321] nfs: server 10.42.0.1 not responding, still trying
[   40.196354] nfs: server 10.42.0.1 not responding, still trying
[   42.401464] nfs: server 10.42.0.1 not responding, still trying
[   44.606505] nfs: server 10.42.0.1 not responding, still trying
[   46.816350] nfs: server 10.42.0.1 not responding, still trying
[   55.636399] nfs: server 10.42.0.1 not responding, still trying
[   64.456407] nfs: server 10.42.0.1 not responding, still trying
[   73.276374] nfs: server 10.42.0.1 not responding, still trying
[  240.096350] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[  240.103715]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[  240.112466] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  240.120501] systemd-journal D c0b5285c     0   121      1 0x00000000
[  240.127183] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[  240.134437] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[  240.142432] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[  240.151244] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[  240.159568] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[  240.167394] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[  240.175659] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[  240.185055] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[  240.194964] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[  240.205129] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[  240.214514] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[  240.222177] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[  360.226438] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[  360.233769]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[  360.242505] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  360.250529] systemd-journal D c0b5285c     0   121      1 0x00000000
[  360.257198] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[  360.264440] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[  360.272426] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[  360.281188] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[  360.289552] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[  360.297366] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[  360.305629] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[  360.315017] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[  360.324953] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[  360.335124] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[  360.344510] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[  360.352158] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[  480.356357] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[  480.363682]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[  480.372422] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  480.380487] systemd-journal D c0b5285c     0   121      1 0x00000000
[  480.387172] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[  480.394423] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[  480.402415] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[  480.411180] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[  480.419553] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[  480.427372] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[  480.435632] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[  480.445029] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[  480.454937] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[  480.465101] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[  480.474480] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[  480.482141] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[  600.486439] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[  600.493768]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[  600.502506] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  600.510535] systemd-journal D c0b5285c     0   121      1 0x00000000
[  600.517203] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[  600.524447] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[  600.532433] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[  600.541236] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[  600.549549] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[  600.557363] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[  600.565619] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[  600.575009] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[  600.584947] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[  600.595121] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[  600.604509] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[  600.612157] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[  720.616374] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[  720.623707]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[  720.632449] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  720.640480] systemd-journal D c0b5285c     0   121      1 0x00000000
[  720.647155] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[  720.654404] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[  720.662399] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[  720.671162] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[  720.679536] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[  720.687348] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[  720.695611] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[  720.705004] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[  720.714908] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[  720.725067] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[  720.734446] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[  720.742095] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[  840.746440] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[  840.753769]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[  840.762507] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  840.770537] systemd-journal D c0b5285c     0   121      1 0x00000000
[  840.777199] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[  840.784440] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[  840.792423] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[  840.801184] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[  840.809535] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[  840.817349] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[  840.825605] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[  840.834994] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[  840.844930] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[  840.855104] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[  840.864476] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[  840.872125] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[  951.083911] nfs: server 10.42.0.1 OK
[  951.088284] nfs: server 10.42.0.1 OK
[  951.092713] nfs: server 10.42.0.1 OK
[  951.096824] nfs: server 10.42.0.1 OK
[  951.100826] nfs: server 10.42.0.1 OK
[  951.105120] nfs: server 10.42.0.1 OK
[  951.109072] nfs: server 10.42.0.1 OK
[  951.109343] nfs: server 10.42.0.1 OK
[  951.109398] nfs: server 10.42.0.1 OK
[  951.109772] nfs: server 10.42.0.1 OK
[  960.876393] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[  960.883733]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[  960.892474] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  960.900507] systemd-journal D c0b5285c     0   121      1 0x00000000
[  960.907187] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[  960.914433] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[  960.922428] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[  960.931240] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[  960.939562] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[  960.947385] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[  960.955649] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[  960.965048] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[  960.974957] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[  960.985121] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[  960.994519] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[  961.002173] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[ 1011.196416] nfs: server 10.42.0.1 not responding, still trying
[ 1011.202460] nfs: server 10.42.0.1 not responding, still trying
[ 1011.208482] nfs: server 10.42.0.1 not responding, still trying
[ 1011.214514] nfs: server 10.42.0.1 not responding, still trying
[ 1081.006782] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[ 1081.014104]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[ 1081.022843] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1081.030871] systemd-journal D c0b5285c     0   121      1 0x00000000
[ 1081.037530] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[ 1081.044773] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[ 1081.052758] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[ 1081.061522] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[ 1081.069845] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[ 1081.077660] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[ 1081.085920] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[ 1081.095299] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[ 1081.105241] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[ 1081.115415] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[ 1081.124800] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[ 1081.132450] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[ 1201.136378] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[ 1201.143722]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[ 1201.152471] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1201.160502] systemd-journal D c0b5285c     0   121      1 0x00000000
[ 1201.167176] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[ 1201.174429] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[ 1201.182421] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[ 1201.191187] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[ 1201.199555] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[ 1201.207374] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[ 1201.215639] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[ 1201.225034] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[ 1201.234944] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[ 1201.245106] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[ 1201.254490] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[ 1201.262151] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)
[ 1321.266429] INFO: task systemd-journal:121 blocked for more than 120 seconds.
[ 1321.273764]       Tainted: G        W       4.5.0-rc7-next-20160309-00002-g1a605aab9b29 #3678
[ 1321.282505] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1321.290534] systemd-journal D c0b5285c     0   121      1 0x00000000
[ 1321.297198] [<c0b5285c>] (__schedule) from [<c0b52c3c>] (schedule+0x44/0x9c)
[ 1321.304443] [<c0b52c3c>] (schedule) from [<c0b5565c>] (schedule_timeout+0x16c/0x1b4)
[ 1321.312427] [<c0b5565c>] (schedule_timeout) from [<c0b5264c>] (io_schedule_timeout+0x7c/0xb4)
[ 1321.321231] [<c0b5264c>] (io_schedule_timeout) from [<c0b53500>] (bit_wait_io+0x10/0x5c)
[ 1321.329549] [<c0b53500>] (bit_wait_io) from [<c0b530a8>] (__wait_on_bit+0x84/0xb8)
[ 1321.337364] [<c0b530a8>] (__wait_on_bit) from [<c03c9ac4>] (wait_on_page_bit+0xd0/0xd8)
[ 1321.345622] [<c03c9ac4>] (wait_on_page_bit) from [<c03c9b94>] (__filemap_fdatawait_range+0xc8/0x110)
[ 1321.355010] [<c03c9b94>] (__filemap_fdatawait_range) from [<c03c9bf4>] (filemap_fdatawait_range+0x18/0x34)
[ 1321.364947] [<c03c9bf4>] (filemap_fdatawait_range) from [<c03cbf2c>] (filemap_write_and_wait_range+0x54/0x74)
[ 1321.375120] [<c03cbf2c>] (filemap_write_and_wait_range) from [<c04d6344>] (nfs_file_fsync+0x84/0x9c)
[ 1321.384505] [<c04d6344>] (nfs_file_fsync) from [<c043d410>] (do_fsync+0x3c/0x64)
[ 1321.392150] [<c043d410>] (do_fsync) from [<c0307dc0>] (ret_fast_syscall+0x0/0x3c)