My S9 was working fine for a year then stopped. Can someone look at my kernel log and tell me what it might be?
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.14.0-xilinx-ga36f3af-dirty (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019
[    0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine model: Xilinx Zynq
[    0.000000] cma: CMA: reserved 128 MiB at 16800000
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 126976
[    0.000000] free_area_init_node: node 0, pgdat c075a640, node_mem_map debd8000
[    0.000000]   Normal zone: 992 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 126976 pages, LIFO batch:31
[    0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9344 r8192 d15232 u32768
[    0.000000] pcpu-alloc: s9344 r8192 d15232 u32768 alloc=8*4096
[    0.000000] pcpu-alloc:

• 0
• 1

[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 125984
[    0.000000] Kernel command line: noinitrd mem=496M console=ttyPS0,115200 root=ubi0:rootfs ubi.mtd=1 rootfstype=ubifs rw rootwait
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Memory: 364252K/507904K available (5094K kernel code, 292K rwdata, 1948K rodata, 209K init, 259K bss, 143652K reserved, 0K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xdf800000 - 0xff000000   ( 504 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xdf000000   ( 496 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc06e8cf4   (7044 kB)
[    0.000000]       .init : 0xc06e9000 - 0xc071d480   ( 210 kB)
[    0.000000]       .data : 0xc071e000 - 0xc0767058   ( 293 kB)
[    0.000000]        .bss : 0xc0767064 - 0xc07a7d64   ( 260 kB)
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000]    Dump stacks of tasks blocking RCU-preempt GP.
[    0.000000]    RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] ps7-slcr mapped to df802000
[    0.000000] zynq_clock_init: clkc starts at df802100
[    0.000000] Zynq clock init
[    0.000014] sched_clock: 64 bits at 333MHz, resolution 3ns, wraps every 3298534883328ns
[    0.000294] ps7-ttc #0 at df804000, irq=43
[    0.000596] Console: colour dummy device 80x30
[    0.000626] Calibrating delay loop... 1325.46 BogoMIPS (lpj=6627328)
[    0.040196] pid_max: default: 32768 minimum: 301
[    0.040403] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.040422] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.042590] CPU: Testing write buffer coherency: ok
[    0.042903] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.042958] Setting up static identity map for 0x4d3ec0 - 0x4d3f18
[    0.043177] L310 cache controller enabled
[    0.043197] l2x0: 8 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x72760000, Cache size: 512 kB
[    0.120989] CPU1: Booted secondary processor
[    0.210219] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.210350] Brought up 2 CPUs
[    0.210368] SMP: Total of 2 processors activated.
[    0.210376] CPU: All CPU(s) started in SVC mode.
[    0.211046] devtmpfs: initialized
[    0.213489] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
[    0.214677] regulator-dummy: no parameters
[    0.222068] NET: Registered protocol family 16
[    0.224337] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.226605] cpuidle: using governor ladder
[    0.226618] cpuidle: using governor menu
[    0.233983] syscon f8000000.ps7-slcr: regmap [mem 0xf8000000-0xf8000fff] registered
[    0.235506] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
[    0.235519] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.235627] zynq-ocm f800c000.ps7-ocmc: ZYNQ OCM pool: 256 KiB @ 0xdf880000
[    0.258125] bio: create slab <bio-0> at 0
[    0.259516] vgaarb: loaded
[    0.260329] SCSI subsystem initialized
[    0.261189] usbcore: registered new interface driver usbfs
[    0.261361] usbcore: registered new interface driver hub
[    0.261585] usbcore: registered new device driver usb
[    0.262100] media: Linux media interface: v0.10
[    0.262257] Linux video capture interface: v2.00
[    0.262496] pps_core: LinuxPPS API ver. 1 registered
[    0.262508] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.262637] PTP clock support registered
[    0.263012] EDAC MC: Ver: 3.0.0
[    0.264054] Advanced Linux Sound Architecture Driver Initialized.
[    0.266793] DMA-API: preallocated 4096 debug entries
[    0.266806] DMA-API: debugging enabled by kernel config
[    0.266874] Switched to clocksource arm_global_timer
[    0.288060] NET: Registered protocol family 2
[    0.288700] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[    0.288758] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
[    0.288843] TCP: Hash tables configured (established 4096 bind 4096)
[    0.288885] TCP: reno registered
[    0.288902] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.288932] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.289159] NET: Registered protocol family 1
[    0.289493] RPC: Registered named UNIX socket transport module.
[    0.289505] RPC: Registered udp transport module.
[    0.289513] RPC: Registered tcp transport module.
[    0.289522] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.289534] PCI: CLS 0 bytes, default 64
[    0.289955] hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available
[    0.291925] futex hash table entries: 512 (order: 3, 32768 bytes)
[    0.293982] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[    0.294170] msgmni has been set to 967
[    0.294927] io scheduler noop registered
[    0.294940] io scheduler deadline registered
[    0.294977] io scheduler cfq registered (default)
[    0.303294] dma-pl330 f8003000.ps7-dma: Loaded driver for PL330 DMAC-2364208
[    0.303314] dma-pl330 f8003000.ps7-dma:    DBUFF-128x8bytes Num_Chans-8 Num_Peri-4 Num_Events-16
[    0.425858] e0001000.serial: ttyPS0 at MMIO 0xe0001000 (irq = 82, base_baud = 3124999) is a xuartps
[    0.993573] console [ttyPS0] enabled
[    0.997827] xdevcfg f8007000.ps7-dev-cfg: ioremap 0xf8007000 to df866000
[    1.005425] [drm] Initialized drm 1.1.0 20060810
[    1.022533] brd: module loaded
[    1.031942] loop: module loaded
[    1.041412] e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k
[    1.047247] e1000e: Copyright(c) 1999 - 2013 Intel Corporation.
[    1.054977] libphy: XEMACPS mii bus: probed
[    1.059611] ------------- phy_id = 0x3625e62
[    1.064333] xemacps e000b000.ps7-ethernet: pdev->id -1, baseaddr 0xe000b000, irq 54
[    1.072958] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.079620] ehci-pci: EHCI PCI platform driver
[    1.086820] zynq-dr e0002000.ps7-usb: Unable to init USB phy, missing?
[    1.093635] usbcore: registered new interface driver usb-storage
[    1.100497] mousedev: PS/2 mouse device common for all mice
[    1.106568] i2c /dev entries driver
[    1.113488] zynq-edac f8006000.ps7-ddrc: ecc not enabled
[    1.119064] cpufreq_cpu0: failed to get cpu0 regulator: -19
[    1.124934] Xilinx Zynq CpuIdle Driver started
[    1.129792] sdhci: Secure Digital Host Controller Interface driver
[    1.135882] sdhci: Copyright(c) Pierre Ossman
[    1.140290] sdhci-pltfm: SDHCI platform and OF driver helper
[    1.147042] mmc0: no vqmmc regulator found
[    1.151058] mmc0: no vmmc regulator found
[    1.186911] mmc0: SDHCI controller on e0100000.ps7-sdio [e0100000.ps7-sdio] using ADMA
[    1.195588] usbcore: registered new interface driver usbhid
[    1.201107] usbhid: USB HID core driver
[    1.205802] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
[    1.212091] nand: Micron MT29F2G08ABAEAWP
[    1.216063] nand: 256MiB, SLC, page size: 2048, OOB size: 64
[    1.222006] Bad block table found at page 131008, version 0x01
[    1.228241] Bad block table found at page 130944, version 0x01
[    1.234288] 3 ofpart partitions found on MTD device pl353-nand
[    1.240060] Creating 3 MTD partitions on "pl353-nand":
[    1.245162] 0x000000000000-0x000002000000 : "BOOT.bin-env-dts-kernel"
[    1.253212] 0x000002000000-0x00000b000000 : "angstram-rootfs"
[    1.260534] 0x00000b000000-0x000010000000 : "upgrade-rootfs"
[    1.269246] nf_conntrack version 0.5.0 (7739 buckets, 30956 max)
[    1.275775] ip_tables: (C) 2000-2006 Netfilter Core Team
[    1.281104] TCP: cubic registered
[    1.284340] NET: Registered protocol family 17
[    1.289040] Registering SWP/SWPB emulation handler
[    1.294928] regulator-dummy: disabling
[    1.299268] UBI: attaching mtd1 to ubi0
[    1.826118] UBI: scanning is finished
[    1.837750] UBI: attached mtd1 (name "angstram-rootfs", size 144 MiB) to ubi0
[    1.844807] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[    1.851602] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[    1.858280] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
[    1.865117] UBI: good PEBs: 1152, bad PEBs: 0, corrupted PEBs: 0
[    1.871127] UBI: user volume: 1, internal volumes: 1, max. volumes count: 128
[    1.878238] UBI: max/mean erase counter: 2/0, WL threshold: 4096, image sequence number: 768485946
[    1.887180] UBI: available PEBs: 0, total reserved PEBs: 1152, PEBs reserved for bad PEB handling: 40
[    1.896378] UBI: background thread "ubi_bgt0d" started, PID 1085
[    1.896383] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[    1.900373] ALSA device list:
[    1.900377]   No soundcards found.
[    1.916675] UBIFS: background thread "ubifs_bgt0_0" started, PID 1087
[    1.945584] UBIFS: recovery needed
[    2.021518] UBIFS: recovery completed
[    2.025174] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
[    2.031120] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[    2.040225] UBIFS: FS size: 128626688 bytes (122 MiB, 1013 LEBs), journal size 9023488 bytes (8 MiB, 72 LEBs)
[    2.050120] UBIFS: reserved for root: 0 bytes (0 KiB)
[    2.055144] UBIFS: media format: w4/r0 (latest is w4/r0), UUID E215D0B0-FA6F-4ECF-A946-F9E82D00BE06, small LPT model
[    2.066206] VFS: Mounted root (ubifs filesystem) on device 0:11.
[    2.072944] devtmpfs: mounted
[    2.076057] Freeing unused kernel memory: 208K (c06e9000 - c071d000)
[    2.911705] random: dd urandom read with 0 bits of entropy available
[    3.326918]
[    3.326918] bcm54xx_config_init
[    4.376922]
[    4.376922] bcm54xx_config_init
[    8.377750] xemacps e000b000.ps7-ethernet: Set clk to 124999998 Hz
[    8.383854] xemacps e000b000.ps7-ethernet: link up (1000/FULL)
[   25.905111] In axi fpga driver!
[   25.908196] request_mem_region OK!
[   25.911566] AXI fpga dev virtual address is 0xdf9fc000
[   25.916673] *base_vir_addr = 0xc51e
[   25.931962] In fpga mem driver!
[   25.935031] request_mem_region OK!
[   25.938643] fpga mem virtual address is 0xe2000000
[   26.726898]
[   26.726898] bcm54xx_config_init
[   27.806906]
[   27.806906] bcm54xx_config_init
[   31.807748] xemacps e000b000.ps7-ethernet: Set clk to 124999998 Hz
[   31.813852] xemacps e000b000.ps7-ethernet: link up (1000/FULL)
main.c:13992: log_level = 4
main.c:14019: This is XILINX board. Totalram:       507424768
main.c:14031: Detect 512MB control board of XILINX
driver-bitmain.c:1776: mmap axi_fpga_addr = 0xb6fb4000
driver-bitmain.c:1781: axi_fpga_addr data = 0xc51e
driver-bitmain.c:1797: mmap fpga_mem_addr = 0xb5dad000
driver-bitmain.c:994: forceFreq=-1 forceFlag=0
driver-bitmain.c:1696: min work minertest[0]:912


main.c:8570: DETECT HW version=0000c51e
main.c:14064: miner ID : 811854ca7910481c
main.c:14089: Miner Type = S9
main.c:14101: AsicType = 1387
main.c:14104: real AsicNum = 63
main.c:14197: use critical mode to search freq...
driver-bitmain.c:1876: get PLUG ON=0x000000e0
driver-bitmain.c:1946: Find hashboard on Chain[5]
driver-bitmain.c:1946: Find hashboard on Chain[6]
driver-bitmain.c:1946: Find hashboard on Chain[7]
main.c:2282: Check chain[5] PIC fw version=0x03
main.c:2282: Check chain[6] PIC fw version=0x03
main.c:2282: Check chain[7] PIC fw version=0x03
main.c:8940: read pic freq and badcore num...
main.c:8961: chain[5]: [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255]
main.c:9003: has freq in PIC, will disable freq setting.
main.c:9099: chain[5] has freq in PIC and will jump over...
main.c:9103: Chain[5] has core num in PIC
main.c:2282: Check chain[5] PIC fw version=0x03
main.c:8940: read pic freq and badcore num...
main.c:8961: chain[6]: [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255]
main.c:9003: has freq in PIC, will disable freq setting.
main.c:9099: chain[6] has freq in PIC and will jump over...
main.c:9103: Chain[6] has core num in PIC
main.c:2282: Check chain[6] PIC fw version=0x03
main.c:8940: read pic freq and badcore num...
main.c:8961: chain[7]: [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255]
main.c:9003: has freq in PIC, will disable freq setting.
main.c:9099: chain[7] has freq in PIC and will jump over...
main.c:9103: Chain[7] has core num in PIC
main.c:2282: Check chain[7] PIC fw version=0x03
main.c:9183: get PIC voltage=108 on chain[5], value=880
main.c:9183: get PIC voltage=108 on chain[6], value=880
main.c:9183: get PIC voltage=108 on chain[7], value=880
main.c:9349: chain[5] temp offset record: 62,-4,0,0,0,0,33,0
main.c:9366: chain[5] temp chip I2C addr=0x98
main.c:9349: chain[6] temp offset record: 62,-4,0,0,0,0,33,0
main.c:9366: chain[6] temp chip I2C addr=0x98
main.c:9349: chain[7] temp offset record: 62,-4,0,0,0,0,33,0
main.c:9366: chain[7] temp chip I2C addr=0x98
main.c:13956: total_exist_chain_num = 3
main.c:9562: CRC error counter=0
main.c:9577: set command mode to VIL
main.c:9649:
--- check asic number
main.c:9745: After Get ASIC NUM CRC error counter=0
main.c:9768: set_baud=0
main.c:10693: The min freq=700
main.c:10695: set real timeout 52, need sleep=379392
main.c:12825: After TEST CRC error counter=0
main.c:14236: search freq for 1 times, completed chain = 3, total chain num = 3
board_frq_tuning.c:628: single_board_frq_tuning enter
board_frq_tuning.c:629: min_rate, des_rate, fix_volt:13800, 14000, 880
board_frq_tuning.c:254: force_freq not set, don't need tuning
main.c:14645: restart Miner chance num=2
main.c:14685: waiting for receive_func to exit!
main.c:14699: waiting for pic heart to exit!
main.c:13927: bmminer not found= 1845 root       0:00 grep bmminer

main.c:14758: bmminer not found, restart bmminer ...
driver-btm-c5.c:12285:bitmain_c5_init: This is user mode for mining
driver-btm-c5.c:12334:bitmain_c5_init: Detect 512MB control board of XILINX
driver-btm-c5.c:12355:bitmain_c5_init: Miner Type = S9
driver-btm-c5.c:12366:bitmain_c5_init: Miner compile time: Tue Jul 30 20:37:39 CST 2019 type: Antminer S9
driver-btm-c5.c:12456:bitmain_c5_init: miner ID : 811854ca7910481c
driver-btm-c5.c:12613:bitmain_c5_init: Checking fans...
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760
driver-btm-c5.c:2990:check_fan_beforeInit: get fan[5] speed=5760