[OE-core] [PATCH 0/7] kernel-yocto: conslidated pull request
Bruce Ashfield
bruce.ashfield at windriver.com
Tue Sep 5 14:24:53 UTC 2017
On 09/05/2017 10:13 AM, Richard Purdie wrote:
> Hi Bruce,
>
> We had a locked up qemuppc lsb image and I was able to find backtraces
> from the serial console log (/home/pokybuild/yocto-autobuilder/yocto-
> worker/nightly-ppc-lsb/build/build/tmp/work/qemuppc-poky-linux/core-
> image-lsb/1.0-r0/target_logs/dmesg_output.log in case anyone ever needs
> to find that). The log is below, this one is for the 4.9 kernel.
>
> Failure as seen on the AB:
> https://autobuilder.yoctoproject.org/main/builders/nightly-ppc-lsb/buil
> ds/1189/steps/Running%20Sanity%20Tests/logs/stdio
>
> Not sure what it means, perhaps you can make more sense of it? :)
Very interesting.
I'm (un)fortunately familiar with RCU issues, and obviously, this is
only happening under load. There's clearly a driver issue as it
interacts with whatever is running in userspace.
From the log, it looks like this is running over NFS and pinning the
CPU and the qemu ethernet isn't handling it gracefully.
But exactly what it is, I can't say from that trace. I'll try and do
a cpu-pinned test on qemuppc (over NFS) and see if I can trigger the
same trace.
Bruce
>
> Cheers,
>
> Richard
>
>
>
> [ 0.000000] Total memory = 256MB; using 512kB for hash table (at cff80000)
> [ 0.000000] Linux version 4.9.46-yocto-standard (oe-user at oe-host) (gcc version 7.2.0 (GCC) ) #1 PREEMPT Tue Sep 5 00:20:12 GMT 2017
> [ 0.000000] Found UniNorth memory controller & host bridge @ 0xf8000000 revision: 0x3124be0
> [ 0.000000] Mapped at 0xfdfc0000
> [ 0.000000] Found a Keylargo mac-io controller, rev: 0, mapped at 0xfdf40000
> [ 0.000000] Processor NAP mode on idle enabled.
> [ 0.000000] PowerMac motherboard: PowerMac G4 AGP Graphics
> [ 0.000000] Using PowerMac machine description
> [ 0.000000] bootconsole [udbg0] enabled
> [ 0.000000] -----------------------------------------------------
> [ 0.000000] Hash_size = 0x80000
> [ 0.000000] phys_mem_size = 0x10000000
> [ 0.000000] dcache_bsize = 0x20
> [ 0.000000] icache_bsize = 0x20
> [ 0.000000] cpu_features = 0x000000000020047a
> [ 0.000000] possible = 0x0000000005a6fd7f
> [ 0.000000] always = 0x0000000000000000
> [ 0.000000] cpu_user_features = 0x9c000001 0x00000000
> [ 0.000000] mmu_features = 0x00000001
> [ 0.000000] Hash = 0xcff80000
> [ 0.000000] Hash_mask = 0x1fff
> [ 0.000000] -----------------------------------------------------
> [ 0.000000] Found UniNorth PCI host bridge at 0x00000000f2000000. Firmware bus number: 0->0
> [ 0.000000] PCI host bridge /pci at f2000000 (primary) ranges:
> [ 0.000000] IO 0x00000000f2000000..0x00000000f27fffff -> 0x0000000000000000
> [ 0.000000] MEM 0x0000000080000000..0x000000008fffffff -> 0x0000000080000000
> [ 0.000000] Top of RAM: 0x10000000, Total RAM: 0x10000000
> [ 0.000000] Memory hole size: 0MB
> [ 0.000000] Zone ranges:
> [ 0.000000] DMA [mem 0x0000000000000000-0x000000000fffffff]
> [ 0.000000] Normal empty
> [ 0.000000] Movable zone start for each node
> [ 0.000000] Early memory node ranges
> [ 0.000000] node 0: [mem 0x0000000000000000-0x000000000fffffff]
> [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000000fffffff]
> [ 0.000000] On node 0 totalpages: 65536
> [ 0.000000] free_area_init_node: node 0, pgdat c0acf43c, node_mem_map cfd30000
> [ 0.000000] DMA zone: 576 pages used for memmap
> [ 0.000000] DMA zone: 0 pages reserved
> [ 0.000000] DMA zone: 65536 pages, LIFO batch:15
> [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
> [ 0.000000] pcpu-alloc: [0] 0
> [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 64960
> [ 0.000000] Kernel command line: root=/dev/vda rw highres=off mem=256M ip=192.168.7.2::192.168.7.1:255.255.255.0 console=tty console=ttyS0 console=tty1 console=ttyS0,115200n8 printk.time=1 qemurunner_pid=17112
> [ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
> [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
> [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
> [ 0.000000] Sorting __ex_table...
> [ 0.000000] Memory: 247220K/262144K available (8164K kernel code, 548K rwdata, 1972K rodata, 440K init, 636K bss, 14924K reserved, 0K cma-reserved)
> [ 0.000000] Kernel virtual memory layout:
> [ 0.000000] * 0xfffdf000..0xfffff000 : fixmap
> [ 0.000000] * 0xfd73b000..0xfe000000 : early ioremap
> [ 0.000000] * 0xd1000000..0xfd73b000 : vmalloc & ioremap
> [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
> [ 0.000000] Preemptible hierarchical RCU implementation.
> [ 0.000000] Build-time adjustment of leaf fanout to 32.
> [ 0.000000] NR_IRQS:512 nr_irqs:512 16
> [ 0.000000] mpic: Resetting
> [ 0.000000] mpic: Setting up MPIC " MPIC 1 " version 1.3 at 80040000, max 1 CPUs
> [ 0.000000] mpic: ISU size: 48, shift: 6, mask: 3f
> [ 0.000000] mpic: Initializing for 48 sources
> [ 0.000000] time_init: decrementer frequency = 100.000000 MHz
> [ 0.000000] time_init: processor frequency = 266.000000 MHz
> [ 0.000867] clocksource: timebase: mask: 0xffffffffffffffff max_cycles: 0x171024e7e0, max_idle_ns: 440795205315 ns
> [ 0.001204] clocksource: timebase mult[a000000] shift[24] registered
> [ 0.001562] clockevent: decrementer mult[1999999a] shift[32] cpu[0]
> [ 0.014375] Console: colour dummy device 80x25
> [ 0.030186] console [tty0] enabled
> [ 0.060271] console [ttyS0] enabled
> [ 0.061213] bootconsole [udbg0] disabled
> [ 0.062025] pid_max: default: 32768 minimum: 301
> [ 0.064889] Security Framework initialized
> [ 0.068548] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
> [ 0.068999] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
> [ 0.104116] ftrace: allocating 22145 entries in 65 pages
> [ 0.323145] devtmpfs: initialized
> [ 0.370895] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
> [ 0.375516] futex hash table entries: 256 (order: -1, 3072 bytes)
> [ 0.378532] xor: measuring software checksum speed
> [ 0.432575] 8regs : 518.000 MB/sec
> [ 0.489299] 8regs_prefetch: 409.000 MB/sec
> [ 0.545544] 32regs : 507.000 MB/sec
> [ 0.612729] 32regs_prefetch: 407.000 MB/sec
> [ 0.706286] altivec : 1854.000 MB/sec
> [ 0.706655] xor: using function: altivec (1854.000 MB/sec)
> [ 0.716165] NET: Registered protocol family 16
> [ 0.740060] PCI: Probing PCI hardware
> [ 0.743517] PCI host bridge to bus 0000:00
> [ 0.758540] pci_bus 0000:00: root bus resource [io 0x0000-0x7fffff]
> [ 0.758995] pci_bus 0000:00: root bus resource [mem 0x80000000-0x8fffffff]
> [ 0.759661] pci_bus 0000:00: root bus resource [bus 00-ff]
> [ 0.760273] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to ff
> [ 0.763081] pci 0000:00:0b.0: [106b:0020] type 00 class 0x060000
> [ 0.770861] pci 0000:00:0c.0: [106b:0022] type 00 class 0xff0000
> [ 0.773154] pci 0000:00:0c.0: reg 0x10: [mem 0x80000000-0x8007ffff]
> [ 0.785602] pci 0000:00:0d.0: [106b:003f] type 00 class 0x0c0310
> [ 0.787413] pci 0000:00:0d.0: reg 0x10: [mem 0x80080000-0x800800ff]
> [ 0.808536] pci 0000:00:0e.0: [1234:1111] type 00 class 0x030000
> [ 0.813314] pci 0000:00:0e.0: reg 0x10: [mem 0x81000000-0x81ffffff pref]
> [ 0.827532] pci 0000:00:0e.0: reg 0x18: [mem 0x82000000-0x82000fff]
> [ 0.871671] pci 0000:00:0e.0: reg 0x30: [mem 0x82010000-0x8201ffff pref]
> [ 0.872908] pci 0000:00:0f.0: [1af4:1000] type 00 class 0x020000
> [ 0.879910] pci 0000:00:0f.0: reg 0x10: [io 0x1000-0x101f]
> [ 0.903981] pci 0000:00:0f.0: reg 0x20: [mem 0x82020000-0x82023fff 64bit pref]
> [ 0.910127] pci 0000:00:0f.0: reg 0x30: [mem 0x82040000-0x8207ffff pref]
> [ 0.911217] pci 0000:00:10.0: [1af4:1005] type 00 class 0x00ff00
> [ 0.913808] pci 0000:00:10.0: reg 0x10: [io 0x1080-0x109f]
> [ 0.931684] pci 0000:00:10.0: reg 0x20: [mem 0x82080000-0x82083fff 64bit pref]
> [ 0.941231] pci 0000:00:11.0: [1af4:1001] type 00 class 0x010000
> [ 0.944078] pci 0000:00:11.0: reg 0x10: [io 0x1100-0x113f]
> [ 0.956735] pci 0000:00:11.0: reg 0x20: [mem 0x82090000-0x82093fff 64bit pref]
> [ 0.967289] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
> [ 0.974008] pci_bus 0000:00: resource 4 [io 0x0000-0x7fffff]
> [ 0.974081] pci_bus 0000:00: resource 5 [mem 0x80000000-0x8fffffff]
> [ 1.151073] raid6: altivecx1 gen() 206 MB/s
> [ 1.246767] raid6: altivecx2 gen() 251 MB/s
> [ 1.357724] raid6: altivecx4 gen() 244 MB/s
> [ 1.461651] raid6: altivecx8 gen() 243 MB/s
> [ 1.556676] raid6: int32x1 gen() 260 MB/s
> [ 1.651882] raid6: int32x1 xor() 195 MB/s
> [ 1.750660] raid6: int32x2 gen() 367 MB/s
> [ 1.844491] raid6: int32x2 xor() 254 MB/s
> [ 1.939874] raid6: int32x4 gen() 358 MB/s
> [ 2.038025] raid6: int32x4 xor() 280 MB/s
> [ 2.139667] raid6: int32x8 gen() 335 MB/s
> [ 2.234651] raid6: int32x8 xor() 257 MB/s
> [ 2.240178] raid6: using algorithm int32x2 gen() 367 MB/s
> [ 2.240472] raid6: .... xor() 254 MB/s, rmw enabled
> [ 2.240788] raid6: using intx1 recovery algorithm
> [ 2.260112] vgaarb: setting as boot device: PCI:0000:00:0e.0
> [ 2.263716] vgaarb: device added: PCI:0000:00:0e.0,decodes=io+mem,owns=io+mem,locks=none
> [ 2.264435] vgaarb: loaded
> [ 2.264643] vgaarb: bridge control possible 0000:00:0e.0
> [ 2.267735] usbcore: registered new interface driver usbfs
> [ 2.268788] usbcore: registered new interface driver hub
> [ 2.269605] usbcore: registered new device driver usb
> [ 2.288951] clocksource: Switched to clocksource timebase
> [ 2.687382] NET: Registered protocol family 2
> [ 2.717271] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
> [ 2.727254] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
> [ 2.728797] TCP: Hash tables configured (established 2048 bind 2048)
> [ 2.730815] UDP hash table entries: 256 (order: 0, 4096 bytes)
> [ 2.731340] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
> [ 2.734473] NET: Registered protocol family 1
> [ 2.745334] RPC: Registered named UNIX socket transport module.
> [ 2.750163] RPC: Registered udp transport module.
> [ 2.750528] RPC: Registered tcp transport module.
> [ 2.750779] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [ 2.969523] PCI: CLS 0 bytes, default 32
> [ 3.007451] workingset: timestamp_bits=14 max_order=16 bucket_order=2
> [ 3.212146] NFS: Registering the id_resolver key type
> [ 3.217706] Key type id_resolver registered
> [ 3.221361] Key type id_legacy registered
> [ 3.264372] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
> [ 3.271639] io scheduler noop registered
> [ 3.271954] io scheduler deadline registered
> [ 3.273256] io scheduler cfq registered (default)
> [ 3.279525] Using unsupported 800x600 QEMU,VGA at 81000000, depth=32, pitch=3200
> [ 3.317467] Console: switching to colour frame buffer device 100x37
> [ 3.343240] fb0: Open Firmware frame buffer device on /pci at f2000000/QEMU,VGA at e
> [ 3.361666] pmac_zilog: 0.6 (Benjamin Herrenschmidt <benh at kernel.crashing.org>)
> [ 3.480448] brd: module loaded
> [ 3.516275] MacIO PCI driver attached to Keylargo chipset
> [ 3.527452] 0.00013020:ch-a: ttyS0 at MMIO 0x80013020 (irq = 37, base_baud = 230400) is a Z85c30 ESCC - Serial port
> [ 3.531620] 0.00013000:ch-b: ttyS1 at MMIO 0x80013000 (irq = 36, base_baud = 230400) is a Z85c30 ESCC - Serial port
> [ 3.539668] Macintosh CUDA driver v0.5 for Unified ADB.
> [ 3.543260] Uniform Multi-Platform E-IDE driver
> [ 3.547029] adb: starting probe task...
> [ 3.644403] adb devices:
> [ 3.647754] [2]: 2 1
> [ 3.673952] [3]: 3 2
>
> [ 3.696968] ADB keyboard at 2, handler set to 3
> [ 3.711720] Detected ADB keyboard, type
> [ 3.712281] ANSI.
> [ 3.727668] input: ADB keyboard as /devices/virtual/input/input0
> [ 3.750853] random: fast init done
> [ 3.805590] ADB mouse at 3, handler set to 2
>
> [ 3.819509] input: ADB mouse as /devices/virtual/input/input1
> [ 3.829063] adb: finished probe task...
> [ 4.588899] ide-pmac: Found Apple KeyLargo ATA-3 controller (macio), bus ID 0, irq 16
> [ 4.606409] Probing IDE interface ide0...
> [ 5.217882] ide0 at 0xd107c000-0xd107c070,0xd107c160 on irq 16
> [ 6.284831] ide-pmac: Found Apple KeyLargo ATA-3 controller (macio), bus ID 1, irq 18
> [ 6.298396] Probing IDE interface ide1...
> [ 6.729531] hdc: QEMU DVD-ROM, ATAPI CD/DVD-ROM drive
> [ 7.462162] hdc: host max PIO4 wanted PIO255(auto-tune) selected PIO0
> [ 7.464430] hdc: MWDMA2 mode selected
> [ 7.482565] ide1 at 0xd107e000-0xd107e070,0xd107e160 on irq 18
> [ 7.500938] ide-gd driver 1.18
> [ 7.535332] pcnet32: pcnet32.c:v1.35 21.Apr.2008 tsbogend at alpha.franken.de
> [ 7.563262] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [ 7.577886] ehci-pci: EHCI PCI platform driver
> [ 7.601267] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [ 7.619630] ohci-pci: OHCI PCI platform driver
> [ 7.641504] ohci-pci 0000:00:0d.0: OHCI PCI host controller
> [ 7.673481] ohci-pci 0000:00:0d.0: new USB bus registered, assigned bus number 1
> [ 7.694410] ohci-pci 0000:00:0d.0: irq 28, io mem 0x80080000
> [ 7.794076] hub 1-0:1.0: USB hub found
> [ 7.816895] hub 1-0:1.0: 3 ports detected
> [ 7.850374] uhci_hcd: USB Universal Host Controller Interface driver
> [ 7.878295] mousedev: PS/2 mouse device common for all mice
> [ 7.899615] md: linear personality registered for level -1
> [ 7.922860] md: raid0 personality registered for level 0
> [ 7.935308] md: raid1 personality registered for level 1
> [ 7.959702] md: raid10 personality registered for level 10
> [ 7.969181] md: multipath personality registered for level -4
> [ 7.995072] md: faulty personality registered for level -5
> [ 8.009341] device-mapper: ioctl: 4.35.0-ioctl (2016-06-23) initialised: dm-devel at redhat.com
> [ 8.046345] usbcore: registered new interface driver usbhid
> [ 8.075651] usbhid: USB HID core driver
> [ 8.095250] oprofile: using timer interrupt.
> [ 8.116830] u32 classifier
> [ 8.125570] Actions configured
> [ 8.155615] NET: Registered protocol family 10
> [ 8.180096] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
> [ 8.205700] NET: Registered protocol family 17
> [ 8.233435] Key type dns_resolver registered
> [ 8.270133] Btrfs loaded, crc32c=crc32c-generic
> [ 8.301254] usb 1-1: new full-speed USB device number 2 using ohci-pci
> [ 8.346923] Key type encrypted registered
> [ 8.375761] console [netcon0] enabled
> [ 8.390093] netconsole: network logging started
> [ 8.469088] IP-Config: Complete:
> [ 8.490858] device=eth0, hwaddr=52:54:00:12:34:02, ipaddr=192.168.7.2, mask=255.255.255.0, gw=192.168.7.1
> [ 8.519422] host=192.168.7.2, domain=, nis-domain=(none)
> [ 8.538316] bootserver=255.255.255.255, rootserver=255.255.255.255, rootpath=
> [ 8.623635] input: QEMU QEMU USB Tablet as /devices/pci0000:00/0000:00:0d.0/usb1/1-1/1-1:1.0/0003:0627:0001.0001/input/input2
> [ 8.659733] hid-generic 0003:0627:0001.0001: input: USB HID v0.01 Mouse [QEMU QEMU USB Tablet] on usb-0000:00:0d.0-1/input0
> [ 8.698987] md: Waiting for all devices to be available before autodetect
> [ 8.727947] md: If you don't use raid, use raid=noautodetect
> [ 8.748899] md: Autodetecting RAID arrays.
> [ 8.765651] md: Scanned 0 and added 0 devices.
> [ 8.775299] md: autorun ...
> [ 8.801958] md: ... autorun DONE.
> [ 8.835558] EXT4-fs (vda): couldn't mount as ext3 due to feature incompatibilities
> [ 8.850387] EXT4-fs (vda): couldn't mount as ext2 due to feature incompatibilities
> [ 8.944795] EXT4-fs (vda): mounted filesystem with ordered data mode. Opts: (null)
> [ 8.954932] VFS: Mounted root (ext4 filesystem) on device 253:0.
> [ 9.012302] devtmpfs: mounted
> [ 9.076752] Freeing unused kernel memory: 440K
> [ 9.102614] This architecture does not have kernel memory protection.
> [ 11.002792] random: crng init done
> [ 12.895348] udevd[109]: starting version 3.2.2
> [ 13.323972] udevd[110]: starting eudev-3.2.2
> [ 28.159641] EXT4-fs (vda): re-mounted. Opts: (null)
> [ 80.754157] bluetoothd[670]: unhandled signal 11 at 6c69627b nip 0fcd584c lr 0fcd5838 code 30001
> [ 82.498226] Installing knfsd (copyright (C) 1996 okir at monad.swb.de).
> [ 83.191010] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> [ 83.209140] NFSD: starting 90-second grace period (net c0ac4728)
> [ 2519.362967] INFO: rcu_preempt self-detected stall on CPU
> [ 2519.458273] 0-...: (5250 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2519.474546] (t=5250 jiffies g=84874 c=84873 q=53)
> [ 2519.505200] rcu_preempt kthread starved for 5250 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1
> [ 2519.546178] rcu_preempt S 0 7 2 0x00000800
> [ 2519.569370] Call Trace:
> [ 2519.599529] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2519.635843] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2519.668939] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2519.699436] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2519.723081] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2519.757931] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2519.792981] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2519.826252] Task dump for CPU 0:
> [ 2519.853483] swapper R running task 0 0 0 0x00000004
> [ 2519.878159] Call Trace:
> [ 2519.903614] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2519.931710] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2519.953862] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2519.984461] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2520.015786] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2520.044767] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2520.066807] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2520.096014] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2520.125893] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2520.160139] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2520.172316] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2520.186787] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2520.205192] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2520.214268] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2520.234343] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2520.249673] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2520.280207] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2520.308617] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2520.324354] [c0ad7ff0] [00003444] 0x3444
> [ 2520.630597] INFO: rcu_preempt self-detected stall on CPU
> [ 2520.642865] 0-...: (21003 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2520.680345] (t=21003 jiffies g=84874 c=84873 q=53)
> [ 2520.715456] rcu_preempt kthread starved for 21003 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2520.764111] rcu_preempt R running task 0 7 2 0x00000800
> [ 2520.802127] Call Trace:
> [ 2520.828157] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2520.846921] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2520.878049] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2520.904027] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2520.923271] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2520.949466] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2520.974980] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2520.995655] Task dump for CPU 0:
> [ 2521.023548] swapper R running task 0 0 0 0x00000004
> [ 2521.052711] Call Trace:
> [ 2521.065930] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2521.096878] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2521.129535] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2521.153729] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2521.188698] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2521.217713] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2521.248336] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2521.270873] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2521.294181] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2521.308470] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2521.323820] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2521.333677] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2521.341010] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2521.353510] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2521.361561] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2521.381920] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2521.396954] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2521.414661] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2521.424721] [c0ad7ff0] [00003444] 0x3444
> [ 2521.650119] INFO: rcu_preempt self-detected stall on CPU
> [ 2521.670362] 0-...: (36756 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2521.678747] (t=36756 jiffies g=84874 c=84873 q=53)
> [ 2521.707581] rcu_preempt kthread starved for 36756 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2521.735371] rcu_preempt R running task 0 7 2 0x00000800
> [ 2521.758377] Call Trace:
> [ 2521.775049] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2521.789210] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2521.806969] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2521.815905] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2521.834388] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2521.849359] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2521.865141] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2521.881569] Task dump for CPU 0:
> [ 2521.888965] swapper R running task 0 0 0 0x00000004
> [ 2521.901408] Call Trace:
> [ 2521.919245] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2521.937061] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2521.960005] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2521.979566] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2521.999974] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2522.018596] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2522.040927] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2522.058008] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2522.077173] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2522.096068] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2522.117197] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2522.125497] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2522.145855] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2522.160565] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2522.168640] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2522.201140] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2522.209944] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2522.218286] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2522.231826] [c0ad7ff0] [00003444] 0x3444
> [ 2522.441421] INFO: rcu_preempt self-detected stall on CPU
> [ 2522.464415] 0-...: (52509 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2522.472445] (t=52509 jiffies g=84874 c=84873 q=53)
> [ 2522.489583] rcu_preempt kthread starved for 52509 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2522.505859] rcu_preempt R running task 0 7 2 0x00000800
> [ 2522.525531] Call Trace:
> [ 2522.538913] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2522.551944] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2522.561387] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2522.570462] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2522.583787] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2522.601972] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2522.624230] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2522.641417] Task dump for CPU 0:
> [ 2522.653978] swapper R running task 0 0 0 0x00000004
> [ 2522.668508] Call Trace:
> [ 2522.680780] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2522.694855] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2522.703821] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2522.719408] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2522.728043] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2522.748308] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2522.759501] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2522.772773] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2522.781213] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2522.806102] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2522.814316] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2522.829109] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2522.837047] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2522.850730] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2522.858394] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2522.892819] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2522.925100] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2522.956808] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2522.990500] [c0ad7ff0] [00003444] 0x3444
> [ 2523.257071] INFO: rcu_preempt self-detected stall on CPU
> [ 2523.276484] 0-...: (68262 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2523.305298] (t=68262 jiffies g=84874 c=84873 q=53)
> [ 2523.322579] rcu_preempt kthread starved for 68262 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2523.359300] rcu_preempt R running task 0 7 2 0x00000800
> [ 2523.388241] Call Trace:
> [ 2523.396544] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2523.410444] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2523.432059] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2523.446323] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2523.458810] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2523.476223] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2523.484875] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2523.499569] Task dump for CPU 0:
> [ 2523.514355] swapper R running task 0 0 0 0x00000004
> [ 2523.522838] Call Trace:
> [ 2523.541521] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2523.553802] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2523.567107] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2523.592341] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2523.600879] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2523.623160] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2523.635156] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2523.657877] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2523.673547] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2523.694602] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2523.719862] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2523.728446] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2523.758495] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2523.766373] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2523.784484] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2523.805626] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2523.819352] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2523.835884] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2523.849914] [c0ad7ff0] [00003444] 0x3444
> [ 2524.111485] INFO: rcu_preempt self-detected stall on CPU
> [ 2524.129183] 0-...: (84015 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2524.138878] (t=84015 jiffies g=84874 c=84873 q=53)
> [ 2524.162350] rcu_preempt kthread starved for 84015 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2524.197885] rcu_preempt R running task 0 7 2 0x00000800
> [ 2524.241858] Call Trace:
> [ 2524.266465] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2524.285810] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2524.315556] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2524.342249] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2524.367516] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2524.386166] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2524.408919] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2524.439783] Task dump for CPU 0:
> [ 2524.461764] swapper R running task 0 0 0 0x00000004
> [ 2524.477239] Call Trace:
> [ 2524.501798] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2524.542536] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2524.579243] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2524.613205] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2524.646312] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2524.667801] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2524.698779] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2524.728287] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2524.735969] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2524.756576] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2524.769777] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2524.777342] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2524.784810] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2524.798566] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2524.806066] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2524.826492] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2524.841045] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2524.852950] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2524.889695] [c0ad7ff0] [00003444] 0x3444
> [ 2525.107610] INFO: rcu_preempt self-detected stall on CPU
> [ 2525.128900] 0-...: (99768 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2525.148960] (t=99768 jiffies g=84874 c=84873 q=53)
> [ 2525.168350] rcu_preempt kthread starved for 99768 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2525.198464] rcu_preempt R running task 0 7 2 0x00000800
> [ 2525.219203] Call Trace:
> [ 2525.225550] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2525.237420] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2525.262647] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2525.282699] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2525.296637] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2525.307627] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2525.323336] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2525.339458] Task dump for CPU 0:
> [ 2525.347600] swapper R running task 0 0 0 0x00000004
> [ 2525.361613] Call Trace:
> [ 2525.373252] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2525.386345] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2525.394520] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2525.411600] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2525.421429] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2525.437678] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2525.447791] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2525.455604] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2525.473499] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2525.492909] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2525.507993] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2525.522387] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2525.530560] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2525.544621] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2525.561456] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2525.585436] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2525.600882] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2525.608840] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2525.621369] [c0ad7ff0] [00003444] 0x3444
> [ 2525.914617] INFO: rcu_preempt self-detected stall on CPU
> [ 2525.936783] 0-...: (115521 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2525.969488] (t=115521 jiffies g=84874 c=84873 q=53)
> [ 2525.999453] rcu_preempt kthread starved for 115521 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2526.036243] rcu_preempt R running task 0 7 2 0x00000800
> [ 2526.065961] Call Trace:
> [ 2526.079568] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2526.110141] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2526.145682] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2526.166969] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2526.201463] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2526.234407] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2526.264631] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2526.295299] Task dump for CPU 0:
> [ 2526.310434] swapper R running task 0 0 0 0x00000004
> [ 2526.344170] Call Trace:
> [ 2526.359761] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2526.394540] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2526.428176] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2526.462701] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2526.502646] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2526.535507] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2526.559743] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2526.592592] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2526.621050] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2526.658876] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2526.679539] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2526.695154] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2526.703675] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2526.718919] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2526.736756] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2526.769278] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2526.791669] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2526.825242] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2526.855811] [c0ad7ff0] [00003444] 0x3444
> [ 2527.169031] INFO: rcu_preempt self-detected stall on CPU
> [ 2527.192803] 0-...: (131274 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2527.226446] (t=131274 jiffies g=84874 c=84873 q=53)
> [ 2527.259538] rcu_preempt kthread starved for 131274 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2527.302568] rcu_preempt R running task 0 7 2 0x00000800
> [ 2527.339126] Call Trace:
> [ 2527.353606] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2527.390878] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2527.428458] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2527.448592] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2527.481498] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2527.513975] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2527.552475] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2527.570898] Task dump for CPU 0:
> [ 2527.600691] swapper R running task 0 0 0 0x00000004
> [ 2527.632358] Call Trace:
> [ 2527.646232] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2527.677062] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2527.707781] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2527.728064] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2527.745596] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2527.757999] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2527.772554] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2527.782789] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2527.796885] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2527.816761] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2527.835809] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2527.843742] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2527.859959] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2527.867446] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2527.880319] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2527.908304] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2527.921470] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2527.936299] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2527.953244] [c0ad7ff0] [00003444] 0x3444
> [ 2528.257487] INFO: rcu_preempt self-detected stall on CPU
> [ 2528.275620] 0-...: (147027 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2528.283571] (t=147027 jiffies g=84874 c=84873 q=53)
> [ 2528.291621] rcu_preempt kthread starved for 147027 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2528.319123] rcu_preempt R running task 0 7 2 0x00000800
> [ 2528.336659] Call Trace:
> [ 2528.351187] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2528.359772] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2528.371848] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2528.384171] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2528.395311] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2528.403561] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2528.416507] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2528.432921] Task dump for CPU 0:
> [ 2528.440117] swapper R running task 0 0 0 0x00000004
> [ 2528.457810] Call Trace:
> [ 2528.470962] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2528.486293] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2528.507972] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2528.515754] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2528.535182] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2528.545537] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2528.558596] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2528.565733] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2528.584616] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2528.599784] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2528.624461] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2528.637932] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2528.649534] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2528.660291] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2528.676930] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2528.708595] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2528.720024] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2528.736317] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2528.755405] [c0ad7ff0] [00003444] 0x3444
> [ 2529.015338] INFO: rcu_preempt self-detected stall on CPU
> [ 2529.038255] 0-...: (162780 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2529.058346] (t=162780 jiffies g=84874 c=84873 q=53)
> [ 2529.075268] rcu_preempt kthread starved for 162780 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2529.103535] rcu_preempt R running task 0 7 2 0x00000800
> [ 2529.115675] Call Trace:
> [ 2529.138955] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2529.150605] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2529.181898] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2529.193412] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2529.220487] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2529.252047] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2529.273128] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2529.305069] Task dump for CPU 0:
> [ 2529.332280] swapper R running task 0 0 0 0x00000004
> [ 2529.356791] Call Trace:
> [ 2529.380548] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2529.411811] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2529.433189] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2529.446876] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2529.454786] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2529.488007] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2529.518769] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2529.541993] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2529.574187] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2529.618986] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2529.640526] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2529.648083] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2529.664110] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2529.678845] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2529.686867] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2529.710635] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2529.725363] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2529.759801] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2529.796653] [c0ad7ff0] [00003444] 0x3444
> [ 2530.116354] INFO: rcu_preempt self-detected stall on CPU
> [ 2530.133710] 0-...: (178533 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2530.143753] (t=178533 jiffies g=84874 c=84873 q=53)
> [ 2530.163665] rcu_preempt kthread starved for 178533 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2530.181959] rcu_preempt R running task 0 7 2 0x00000800
> [ 2530.190116] Call Trace:
> [ 2530.201038] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2530.212812] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2530.225676] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2530.239465] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2530.247115] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2530.259440] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2530.281232] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2530.298775] Task dump for CPU 0:
> [ 2530.318156] swapper R running task 0 0 0 0x00000004
> [ 2530.326954] Call Trace:
> [ 2530.340661] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2530.358341] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2530.371708] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2530.384260] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2530.394474] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2530.402289] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2530.419579] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2530.434750] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2530.450684] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2530.483728] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2530.506582] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2530.536758] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2530.556750] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2530.592280] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2530.617012] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2530.644207] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2530.654646] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2530.663028] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2530.688666] [c0ad7ff0] [00003444] 0x3444
> [ 2531.013674] INFO: rcu_preempt self-detected stall on CPU
> [ 2531.027363] 0-...: (194286 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2531.037624] (t=194286 jiffies g=84874 c=84873 q=53)
> [ 2531.047267] rcu_preempt kthread starved for 194286 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2531.072135] rcu_preempt R running task 0 7 2 0x00000800
> [ 2531.083806] Call Trace:
> [ 2531.093576] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2531.105771] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2531.120681] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2531.133393] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2531.147597] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2531.159951] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2531.172739] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2531.200601] Task dump for CPU 0:
> [ 2531.216548] swapper R running task 0 0 0 0x00000004
> [ 2531.230100] Call Trace:
> [ 2531.249336] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2531.268922] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2531.287880] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2531.310234] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2531.331946] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2531.349628] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2531.371115] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2531.389271] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2531.409999] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2531.436113] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2531.449696] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2531.461933] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2531.474184] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2531.486646] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2531.494524] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2531.515130] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2531.532345] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2531.543987] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2531.573438] [c0ad7ff0] [00003444] 0x3444
> [ 2531.836746] INFO: rcu_preempt self-detected stall on CPU
> [ 2531.852968] 0-...: (210039 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2531.860860] (t=210039 jiffies g=84874 c=84873 q=53)
> [ 2531.887095] rcu_preempt kthread starved for 210039 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2531.909295] rcu_preempt R running task 0 7 2 0x00000800
> [ 2531.940888] Call Trace:
> [ 2531.959686] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2531.994629] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2532.004461] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2532.020619] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2532.030474] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2532.045757] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2532.060897] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2532.075143] Task dump for CPU 0:
> [ 2532.088050] swapper R running task 0 0 0 0x00000004
> [ 2532.105019] Call Trace:
> [ 2532.114150] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2532.128494] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2532.160723] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2532.184851] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2532.207407] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2532.224837] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2532.260705] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2532.282864] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2532.302674] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2532.325954] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2532.350791] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2532.372823] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2532.380553] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2532.395722] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2532.412315] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2532.426931] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2532.454993] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2532.472456] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2532.495456] [c0ad7ff0] [00003444] 0x3444
> [ 2532.725581] INFO: rcu_preempt self-detected stall on CPU
> [ 2532.738187] 0-...: (225792 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2532.749810] (t=225792 jiffies g=84874 c=84873 q=53)
> [ 2532.757036] rcu_preempt kthread starved for 225792 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2532.775936] rcu_preempt R running task 0 7 2 0x00000800
> [ 2532.794782] Call Trace:
> [ 2532.802628] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2532.810697] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2532.827624] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2532.842307] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2532.850119] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2532.863431] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2532.870920] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2532.883644] Task dump for CPU 0:
> [ 2532.903822] swapper R running task 0 0 0 0x00000004
> [ 2532.918481] Call Trace:
> [ 2532.941341] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2532.963033] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2532.981115] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2533.004725] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2533.018495] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2533.033120] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2533.055486] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2533.082978] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2533.111277] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2533.146550] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2533.177387] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2533.193048] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2533.213204] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2533.233285] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2533.251316] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2533.294707] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2533.302462] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2533.320246] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2533.334036] [c0ad7ff0] [00003444] 0x3444
> [ 2533.616880] INFO: rcu_preempt self-detected stall on CPU
> [ 2533.631495] 0-...: (241545 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2533.642014] (t=241545 jiffies g=84874 c=84873 q=53)
> [ 2533.649548] rcu_preempt kthread starved for 241545 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2533.674804] rcu_preempt R running task 0 7 2 0x00000800
> [ 2533.694140] Call Trace:
> [ 2533.713326] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2533.729362] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2533.744931] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2533.752692] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2533.765309] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2533.773010] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2533.791180] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2533.799680] Task dump for CPU 0:
> [ 2533.824490] swapper R running task 0 0 0 0x00000004
> [ 2533.832484] Call Trace:
> [ 2533.846127] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2533.864181] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2533.872620] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2533.880612] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2533.902207] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2533.909916] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2533.925726] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2533.942666] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2533.955926] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2533.978994] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2533.993495] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2534.007815] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2534.014860] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2534.027120] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2534.043145] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2534.063194] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2534.077901] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2534.085431] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2534.097901] [c0ad7ff0] [00003444] 0x3444
> [ 2534.342372] INFO: rcu_preempt self-detected stall on CPU
> [ 2534.356272] 0-...: (257298 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2534.364177] (t=257298 jiffies g=84874 c=84873 q=53)
> [ 2534.373931] rcu_preempt kthread starved for 257298 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2534.398853] rcu_preempt R running task 0 7 2 0x00000800
> [ 2534.409561] Call Trace:
> [ 2534.420177] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2534.432668] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2534.440424] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2534.453942] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2534.463563] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2534.471046] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2534.482540] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2534.490014] Task dump for CPU 0:
> [ 2534.503245] swapper R running task 0 0 0 0x00000004
> [ 2534.510651] Call Trace:
> [ 2534.521955] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2534.534737] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2534.545810] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2534.557191] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2534.574563] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2534.596608] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2534.611763] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2534.626817] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2534.635711] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2534.660228] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2534.668068] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2534.687100] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2534.694289] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2534.701349] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2534.714106] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2534.736693] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2534.745608] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2534.753989] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2534.768622] [c0ad7ff0] [00003444] 0x3444
> [ 2535.005544] INFO: rcu_preempt self-detected stall on CPU
> [ 2535.021776] 0-...: (273051 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2535.029516] (t=273051 jiffies g=84874 c=84873 q=53)
> [ 2535.043423] rcu_preempt kthread starved for 273051 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2535.064464] rcu_preempt R running task 0 7 2 0x00000800
> [ 2535.081389] Call Trace:
> [ 2535.095413] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2535.102987] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2535.118654] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2535.140548] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2535.173372] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2535.181244] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2535.193016] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2535.200466] Task dump for CPU 0:
> [ 2535.216645] swapper R running task 0 0 0 0x00000004
> [ 2535.223621] Call Trace:
> [ 2535.235489] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2535.251428] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2535.259428] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2535.273882] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2535.295415] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2535.312193] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2535.335539] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2535.355441] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2535.377468] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2535.407577] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2535.418629] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2535.427405] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2535.450101] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2535.457633] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2535.475954] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2535.494682] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2535.506455] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2535.520149] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2535.527655] [c0ad7ff0] [00003444] 0x3444
> [ 2535.736312] INFO: rcu_preempt self-detected stall on CPU
> [ 2535.754797] 0-...: (288804 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2535.783182] (t=288804 jiffies g=84874 c=84873 q=53)
> [ 2535.801856] rcu_preempt kthread starved for 288804 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2535.834694] rcu_preempt R running task 0 7 2 0x00000800
> [ 2535.863692] Call Trace:
> [ 2535.871343] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2535.902066] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2535.928956] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2535.946558] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2535.975256] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2536.002108] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2536.019470] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2536.048279] Task dump for CPU 0:
> [ 2536.061819] swapper R running task 0 0 0 0x00000004
> [ 2536.093707] Call Trace:
> [ 2536.115952] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2536.136392] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2536.163809] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2536.181976] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2536.209206] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2536.238044] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2536.257000] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2536.264903] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2536.277222] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2536.296838] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2536.311834] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2536.321607] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2536.330484] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2536.358375] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2536.387598] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2536.424400] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2536.446027] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2536.473234] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2536.503378] [c0ad7ff0] [00003444] 0x3444
> [ 2536.837171] INFO: rcu_preempt self-detected stall on CPU
> [ 2536.870838] 0-...: (304557 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2536.890682] (t=304557 jiffies g=84874 c=84873 q=53)
> [ 2536.917435] rcu_preempt kthread starved for 304557 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2536.953631] rcu_preempt R running task 0 7 2 0x00000800
> [ 2536.983784] Call Trace:
> [ 2536.997546] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2537.027683] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2537.047520] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2537.070607] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2537.078040] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2537.107279] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2537.126489] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2537.150249] Task dump for CPU 0:
> [ 2537.164004] swapper R running task 0 0 0 0x00000004
> [ 2537.193634] Call Trace:
> [ 2537.214328] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2537.235216] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2537.263687] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2537.291642] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2537.312050] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2537.339939] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2537.357990] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2537.370597] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2537.379076] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2537.418564] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2537.432048] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2537.440312] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2537.451660] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2537.458951] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2537.488746] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2537.503498] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2537.528453] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2537.546996] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2537.567576] [c0ad7ff0] [00003444] 0x3444
> [ 2537.860086] INFO: rcu_preempt self-detected stall on CPU
> [ 2537.882016] 0-...: (320310 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2537.911366] (t=320310 jiffies g=84874 c=84873 q=53)
> [ 2537.940073] rcu_preempt kthread starved for 320310 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2537.978949] rcu_preempt R running task 0 7 2 0x00000800
> [ 2538.001826] Call Trace:
> [ 2538.029738] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2538.070722] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2538.100205] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2538.128827] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2538.150252] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2538.178587] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2538.208109] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2538.243430] Task dump for CPU 0:
> [ 2538.260763] swapper R running task 0 0 0 0x00000004
> [ 2538.295255] Call Trace:
> [ 2538.319326] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2538.353329] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2538.365422] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2538.388785] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2538.407878] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2538.436512] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2538.463303] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2538.485313] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2538.520096] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2538.551696] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2538.564070] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2538.587497] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2538.595562] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2538.620194] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2538.631853] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2538.663556] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2538.678921] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2538.687238] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2538.706436] [c0ad7ff0] [00003444] 0x3444
> [ 2538.951213] INFO: rcu_preempt self-detected stall on CPU
> [ 2538.960442] 0-...: (336063 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2538.968171] (t=336063 jiffies g=84874 c=84873 q=53)
> [ 2538.975724] rcu_preempt kthread starved for 336063 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2538.990561] rcu_preempt R running task 0 7 2 0x00000800
> [ 2539.004898] Call Trace:
> [ 2539.014382] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2539.033396] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2539.042215] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2539.051097] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2539.060116] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2539.079468] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2539.088440] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2539.098476] Task dump for CPU 0:
> [ 2539.117168] swapper R running task 0 0 0 0x00000004
> [ 2539.127044] Call Trace:
> [ 2539.135466] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2539.154839] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2539.170320] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2539.194940] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2539.208877] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2539.230751] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2539.239349] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2539.256826] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2539.280717] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2539.324003] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2539.340321] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2539.356428] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2539.372904] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2539.389709] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2539.403558] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2539.440241] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2539.470266] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2539.498239] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2539.518479] [c0ad7ff0] [00003444] 0x3444
> [ 2539.760533] INFO: rcu_preempt self-detected stall on CPU
> [ 2539.778809] 0-...: (351816 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2539.798089] (t=351816 jiffies g=84874 c=84873 q=53)
> [ 2539.815592] rcu_preempt kthread starved for 351816 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2539.850189] rcu_preempt R running task 0 7 2 0x00000800
> [ 2539.883634] Call Trace:
> [ 2539.896572] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2539.927581] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2539.957673] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2539.976327] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2540.004235] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2540.032012] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2540.049489] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2540.080698] Task dump for CPU 0:
> [ 2540.103505] swapper R running task 0 0 0 0x00000004
> [ 2540.119580] Call Trace:
> [ 2540.128604] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2540.144756] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2540.152782] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2540.172105] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2540.188729] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2540.196671] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2540.218673] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2540.236930] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2540.263564] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2540.298205] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2540.328478] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2540.347617] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2540.368475] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2540.376351] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2540.383423] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2540.407878] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2540.436648] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2540.457147] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2540.484954] [c0ad7ff0] [00003444] 0x3444
> [ 2540.760162] INFO: rcu_preempt self-detected stall on CPU
> [ 2540.780333] 0-...: (367569 ticks this GP) idle=7c3/2/0 softirq=119072/119072 fqs=0
> [ 2540.809632] (t=367569 jiffies g=84874 c=84873 q=53)
> [ 2540.839013] rcu_preempt kthread starved for 367569 jiffies! g84874 c84873 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0
> [ 2540.876893] rcu_preempt R running task 0 7 2 0x00000800
> [ 2540.907570] Call Trace:
> [ 2540.922399] [cf8bfcf0] [84000242] 0x84000242 (unreliable)
> [ 2540.954627] [cf8bfdb0] [c07ea7c0] __schedule+0x2c4/0x83c
> [ 2540.985532] [cf8bfe10] [c07ead78] schedule+0x40/0xb0
> [ 2541.005708] [cf8bfe20] [c07ee728] schedule_timeout+0xa4/0x340
> [ 2541.038839] [cf8bfe90] [c008d49c] rcu_gp_kthread+0x638/0xae8
> [ 2541.074001] [cf8bfef0] [c0058038] kthread+0xf8/0xfc
> [ 2541.104041] [cf8bff40] [c001337c] ret_from_kernel_thread+0x5c/0x64
> [ 2541.125933] Task dump for CPU 0:
> [ 2541.151605] swapper R running task 0 0 0 0x00000004
> [ 2541.185891] Call Trace:
> [ 2541.199601] [cff73da0] [c07f37b4] rcu_dump_cpu_stacks+0xbc/0x100 (unreliable)
> [ 2541.233668] [cff73dc0] [c008e2f8] rcu_check_callbacks+0x5d8/0xa04
> [ 2541.264656] [cff73e30] [c0094a40] update_process_times+0x40/0x74
> [ 2541.296985] [cff73e40] [c00a7a80] tick_periodic+0xfc/0x124
> [ 2541.330215] [cff73e50] [c00a7b78] tick_handle_periodic+0xd0/0x124
> [ 2541.352252] [cff73e80] [c000ceac] __timer_interrupt+0xe0/0x310
> [ 2541.378795] [cff73ea0] [c000d30c] timer_interrupt+0x84/0xf8
> [ 2541.409014] [cff73ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2541.430389] --- interrupt: 901 at __do_softirq+0xf4/0x394
> LR = __do_softirq+0xe0/0x394
> [ 2541.470313] [cff73f80] [c07f290c] __do_softirq+0x9c/0x394 (unreliable)
> [ 2541.500407] [cff73fe0] [c0039080] irq_exit+0xc8/0xd0
> [ 2541.529840] [cff73ff0] [c0010f8c] call_do_irq+0x24/0x3c
> [ 2541.559954] [c0ad7e90] [c00074b4] do_IRQ+0xb0/0x164
> [ 2541.583389] [c0ad7ec0] [c001396c] ret_from_except+0x0/0x14
> [ 2541.612771] --- interrupt: 501 at arch_cpu_idle+0x30/0x78
> LR = arch_cpu_idle+0x30/0x78
> [ 2541.656442] [c0ad7f80] [c07eb158] schedule_preempt_disabled+0x2c/0x3c (unreliable)
> [ 2541.681584] [c0ad7f90] [c0070ff4] cpu_startup_entry+0xd4/0x170
> [ 2541.707980] [c0ad7fb0] [c09ed0fc] start_kernel+0x380/0x3ac
> [ 2541.720637] [c0ad7ff0] [00003444] 0x3444
>
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