The system will print “**printk messages dropped” continuously when reboot

[zhimingqiu]

my cpu is B4860 and I use the the sdk-v2.0-1703; my problem is : When the system restarts,Occasionally, The system will print “**printk messages dropped” continuously at the following locations:

[11:15:56]U-Boot 2016.09-svn251626 (V3.0.0-5 Nov 13 2018 - 11:37:03)
[11:15:56]
[11:15:56]CPU0: B4860E, Version: 2.2, (0x86880022)
[11:15:56]Core: e6500, Version: 2.0, (0x80400120)
[11:15:56]Clock Configuration:
[11:15:56] CPU0:1600 MHz, CPU1:1600 MHz, CPU2:1600 MHz, CPU3:1600 MHz,
[11:15:56] DSP CPU0:1200 MHz, DSP CPU1:1200 MHz, DSP CPU2:1200 MHz, DSP CPU3:1200 MHz,
[11:15:56] DSP CPU4:1200 MHz, DSP CPU5:1200 MHz,
[11:15:56] CCB:666.667 MHz,
[11:15:56] DDR:800 MHz (1600 MT/s data rate) (Asynchronous), IFC:333.333 MHz
[11:15:56] CPRI:600 MHz
[11:15:56] MAPLE:600 MHz, MAPLE-ULB:800 MHz, MAPLE-eTVPE:1000 MHz
[11:15:56] FMAN1: 666.667 MHz
[11:15:56] QMAN: 333.333 MHz
[11:15:56]L1: D-cache 32 KiB enabled
[11:15:56] I-cache 32 KiB enabled
[11:15:56]Reset Configuration Word (RCW):
[11:15:56] 00000000: 14000c18 0f001218 00000000 00000000
[11:15:56] 00000010: 5a040000 20900000 ec025000 a9000000
[11:15:56] 00000020: 00000000 00000001 00000000 100071fc
[11:15:56] 00000030: 00000100 04000020 00000000 00000011
[11:15:56]RCW src = 0x049 (I2C1 extended addressing)
[11:15:57]RCW GPINFO = 00000001, CRC = 0x48cb7a27
[11:15:57]Board: B4860, boot from NOR FLASH bank 1
[11:15:57]SERDES Reference Clocks: SD1_CLK1=0, SD1_CLK2=122.88 SD2_CLK1=125, SD2_CLK2=0
[11:15:57]Serdes1 PLL1 is powered down.
[11:15:57]Serdes2 PLL2 is powered down.
[11:15:57]Reset Request Mask Register: 0x00004000
[11:15:57]Reset Request Status Register: 0x00100000
[11:15:57]I2C: ready
[11:15:57]SPI: ready
[11:15:57]DRAM: Initializing....using SPD
[11:15:57]Detected UDIMM RAW timing DDR
[11:15:57]Detected UDIMM RAW timing DDR
[11:15:58]3 GiB left unmapped
[11:15:58]5 GiB (DDR3, 64-bit, CL=11, ECC on)
[11:15:58]VID: DCFG_CCSR_FUSESR=0x20000000. DA_V=0x10, DA_ALT_V=0x00. VID=0x10, vdd=1.0000 V
[11:15:58]VID: target vid = 1000.0 mV
[11:15:58]VID: Core voltage is currently at 0.9935 V from sensor (setting 1.0000 V)
[11:15:58]VID: Core voltage is equal to the setting. Nothing is changed.
[11:15:58]Flash: 128 MiB
[11:15:58]L2: 2 MiB enabled
[11:15:58]Corenet Platform Cache: 512 KiB enabled
[11:15:58]Using SERDES1 Protocol: 45 (0x2d)
[11:15:58]Using SERDES2 Protocol: 4 (0x4)
[11:15:58]SEC0: RNG instantiated
[11:15:58]NAND: 1024 MiB
[11:15:58]In: serial
[11:15:58]Out: serial
[11:15:58]Err: serial
[11:15:58]do_flash_bank_select() cpld reg 0x32=0x1 0x33=0x0 0x34=0x66
[11:15:58]Net: Initializing Fman
[11:15:58]Fman1: Uploading microcode version 106.4.18
[11:15:58]FM1@DTSEC1 [PRIME], FM1@DTSEC2, FM1@DTSEC3, FM1@DTSEC4
[11:15:59]WARNING: adjusting available memory to 30000000
[11:15:59]## Booting kernel from Legacy Image at ec100000 ...
[11:15:59] Image Name: Linux-4.1.35-rt41
[11:15:59] Image Type: PowerPC Linux Kernel Image (gzip compressed)
[11:15:59] Data Size: 5783939 Bytes = 5.5 MiB
[11:15:59] Load Address: 00000000
[11:15:59] Entry Point: 00000000
[11:16:01] Verifying Checksum ... OK
[11:16:01]## Loading init Ramdisk from Legacy Image at ecb00000 ...
[11:16:01] Image Name: Ram disk 
[11:16:01] Image Type: PowerPC Linux RAMDisk Image (gzip compressed)
[11:16:01] Data Size: 34130794 Bytes = 32.5 MiB
[11:16:01] Load Address: 00000000
[11:16:01] Entry Point: 00000000
[11:16:08] Verifying Checksum ... OK
[11:16:08]## Flattened Device Tree blob at ec0e0000
[11:16:08] Booting using the fdt blob at 0xec0e0000
[11:16:10] Uncompressing Kernel Image ... OK
[11:16:10] reserving fdt memory region: addr=fec00000 size=40000
[11:16:10] reserving fdt memory region: addr=fffe0000 size=20000
[11:16:17] Loading Ramdisk to 01f73000, end 03fffb6a ... OK
[11:16:17] Loading Device Tree to 01f56000, end 01f72c9c ... OK
[11:16:18]WARNING Could not get liodn of node /pcie@ffe200000: FDT_ERR_NOTFOUND
[11:16:18][ 0.000000] Using fsl_fm_max_frm=9600 from bootargs
[11:16:18][ 0.000000] uspdaa_mem argument is depracated
[11:16:18][ 0.000000] Reserved memory: initialized node bman-fbpr, compatible id fsl,bman-fbpr
[11:16:18][ 0.000000] Reserved memory: initialized node qman-fqd, compatible id fsl,qman-fqd
[11:16:18][ 0.000000] Reserved memory: initialized node qman-pfdr, compatible id fsl,qman-pfdr
[11:16:18][ 0.000000] Reserved memory: initialized node usdpaa_mem, compatible id fsl,usdpaa-mem
[11:16:18][ 0.000000] Using CoreNet Generic machine description
[11:16:18][ 0.000000] MMU: Supported page sizes
[11:16:18][ 0.000000] 4 KB as direct
[11:16:18][ 0.000000] 2048 KB as direct & indirect
[11:16:18][ 0.000000] 4096 KB as direct
[11:16:18][ 0.000000] 16384 KB as direct
[11:16:18][ 0.000000] 65536 KB as direct
[11:16:18][ 0.000000] 262144 KB as direct
[11:16:18][ 0.000000] 1048576 KB as direct
[11:16:18][ 0.000000] MMU: Book3E HW tablewalk enabled
[11:16:18][ 0.000000] Found initrd at 0xc000000001f73000:0xc000000003fffb6a
[11:16:18] <- setup_system()
[11:16:18][ 0.000000] bootconsole [udbg0] enabled
[11:16:18][ 0.000000] CPU maps initialized for 2 threads per core
[11:16:18][ 0.000000] Starting Linux PPC64 #18 SMP PREEMPT RT Thu Sep 26 16:34:08 CST 2019
[11:16:18][ 0.000000] -----------------------------------------------------
[11:16:18][ 0.000000] ppc64_pft_size = 0x0
[11:16:18][ 0.000000] phys_mem_size = 0x100000000
[11:16:18][ 0.000000] dcache_line_size = 0x40
[11:16:18][ 0.000000] icache_line_size = 0x40
[11:16:18][ 0.000000] cpu_features = 0x00180480581802c8
[11:16:18][ 0.000000] possible = 0x00180480581802c8
[11:16:18][ 0.000000] always = 0x00180400581802c0
[11:16:18][ 0.000000] cpu_user_features = 0xdc008000 0x08000000
[11:16:18][ 0.000000] mmu_features = 0x000a0010
[11:16:18][ 0.000000] firmware_features = 0x0000000000000000
[11:16:18][ 0.000000] -----------------------------------------------------
[11:16:18][ 0.000000] Initializing cgroup subsys cpuset
[11:16:18][ 0.000000] Initializing cgroup subsys cpu
[11:16:18][ 0.000000] Initializing cgroup subsys cpuacct
[11:16:18][ 0.000000] Linux version 4.1.35-rt41 + (root@nansn) (gcc version 4.8.1 (GCC) ) #18 SMP PREEMPT RT Thu Sep 26 16:34:08 CST 2019
[11:16:18][ 0.000000] (kernel version: V1.1.0-1)
[11:16:18][ 0.000000] CoreNet Generic board
[11:16:18][ 0.000000] Zone ranges:
[11:16:18][ 0.000000] DMA [mem 0x0000000000000000-0x00000000ffffffff]
[11:16:18][ 0.000000] DMA32 empty
[11:16:18][ 0.000000] Normal empty
[11:16:18][ 0.000000] Movable zone start for each node
[11:16:18][ 0.000000] Early memory node ranges
[11:16:18][ 0.000000] node 0: [mem 0x0000000000000000-0x00000000ffffffff]
[11:16:18][ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x00000000ffffffff]
[11:16:18][ 0.000000] MMU: Allocated 2112 bytes of context maps for 255 contexts
[11:16:18][ 0.000000] PERCPU: Embedded 158 pages/cpu @c0000000fe400000 s607744 r0 d39424 u1048576
[11:16:18][ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 1032192
[11:16:18][ 0.000000] Kernel command line: root=/dev/ram rw console=ttyS1,115200 fsl_fm_max_frm=9600 default_hugepagesz=256m hugepagesz=256m hugepages=1 usdpaa_mem=512M hostname=b4860_bld_bbu tty_magic
[11:16:18][ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[11:16:18][ 0.000000] Dentry cache hash table entries: 524288 (order: 11, 8388608 bytes)
[11:16:18][ 0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
[11:16:18][ 0.000000] Sorting __ex_table...
[11:16:18][ 0.000000] Memory: 3150960K/4194304K available (9960K kernel code, 1684K rwdata, 3168K rodata, 1236K init, 1549K bss, 1043344K reserved, 0K cma-reserved)
[11:16:18][ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1
[11:16:18][ 0.000000] Preemptible hierarchical RCU implementation.
[11:16:18][ 0.000000] Additional per-CPU info printed with stalls.
[11:16:18][ 0.000000] RCU kthread priority: 1.
[11:16:18][ 0.000000] NR_IRQS:512 nr_irqs:512 16
[11:16:18][ 0.000000] mpic: Setting up MPIC " OpenPIC " version 1.2 at ffe040000, max 8 CPUs
[11:16:18][ 0.000000] mpic: ISU size: 512, shift: 9, mask: 1ff
[11:16:18][ 0.000000] mpic: Initializing for 512 sources
[11:16:18][ 0.000004] clocksource timebase: mask: 0xffffffffffffffff max_cycles: 0x99c0f5e04, max_idle_ns: 440795204113 ns
[11:16:18][ 0.000008] clocksource: timebase mult[18000006] shift[24] registered
[11:16:18][ 0.001807] Console: colour dummy device 80x25
[11:16:18][ 0.279849] pid_max: default: 32768 minimum: 301
[11:16:18][ 0.279916] Security Framework initialized
[11:16:18][ 0.280012] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
[11:16:18][ 0.280018] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes)
[11:16:18][ 0.280598] Initializing cgroup subsys blkio
[11:16:18][ 0.280607] Initializing cgroup subsys memory
[11:16:18][ 0.280637] Initializing cgroup subsys devices
[11:16:18][ 0.280645] Initializing cgroup subsys freezer
[11:16:18][ 0.280653] Initializing cgroup subsys net_cls
[11:16:18][ 0.280660] Initializing cgroup subsys debug
[11:16:18][ 0.280679] ftrace: allocating 23956 entries in 141 pages
[11:16:19][ 0.300331] e6500 family performance monitor hardware support registered
[11:16:19][ 0.440627] Brought up 8 CPUs
[11:16:19][ 0.444186] devtmpfs: initialized
[11:16:19][ 0.461560] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[11:16:19][ 0.472322] NET: Registered protocol family 16
[11:16:19][ 0.477270] Bman ver:0a02,02,01
[11:16:19][ 0.580656] qman-fqd addr 0x00000000ff000000 size 0x800000
[11:16:19][ 0.586051] qman-pfdr addr 0x00000000fa000000 size 0x2000000
[11:16:19][ 0.591702] Qman ver:0a01,03,01,01
[11:16:19][ 0.685960] pps_core: LinuxPPS API ver. 1 registered
[11:16:19][ 0.690839] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[11:16:19][ 0.699979] PTP clock support registered
[11:16:19][ 0.703912] EDAC MC: Ver: 3.0.0
[11:16:19][ 0.707326] bman-fbpr addr 0x00000000fd000000 size 0x1000000
[11:16:19][ 0.713066] Bman err interrupt handler present
[11:16:19][ 0.719000] Bman portal initialised, cpu 0
[11:16:19][ 0.723168] Bman portal initialised, cpu 1
[11:16:19][ 0.727341] Bman portal initialised, cpu 2
[11:16:19][ 0.731520] Bman portal initialised, cpu 3
[11:16:19][ 0.735688] Bman portal initialised, cpu 4
[11:16:19][ 0.739855] Bman portal initialised, cpu 5
[11:16:19][ 0.744030] Bman portal initialised, cpu 6
[11:16:19][ 0.748205] Bman portal initialised, cpu 7
[11:16:19][ 0.752209] Bman portals initialised
[11:16:19][ 0.756455] Qman err interrupt handler present
[11:16:19][ 0.761489] QMan: Allocated lookup table at 8000000000002000, entry count 131073
[11:16:19][ 0.770569] Qman portal initialised, cpu 0
[11:16:19][ 0.774768] Qman portal initialised, cpu 1
[11:16:19][ 0.778975] Qman portal initialised, cpu 2
[11:16:19][ 0.783180] Qman portal initialised, cpu 3
[11:16:19][ 0.787378] Qman portal initialised, cpu 4
[11:16:19][ 0.791582] Qman portal initialised, cpu 5
[11:16:19][ 0.795800] Qman portal initialised, cpu 6
[11:16:19][ 0.799999] Qman portal initialised, cpu 7
[11:16:19][ 0.804003] Qman portals initialised
[11:16:19][ 0.807727] Bman: BPID allocator includes range 32:32
[11:16:19][ 0.812797] Qman: FQID allocator includes range 256:512
[11:16:19][ 0.817934] Qman: FQID allocator includes range 32768:32768
[11:16:19][ 0.823592] Qman: CGRID allocator includes range 0:256
[11:16:19][ 0.828864] Qman: pool channel allocator includes range 1025:15
[11:16:19][ 0.834885] USDPAA region at c0000000:20000000(c0000:20000), 1 TLB1 entries)
[11:16:19][ 0.841890] fsl-ifc ffe124000.localbus: Freescale Integrated Flash Controller
[11:16:19][ 0.848981] fsl-ifc ffe124000.localbus: IFC version 1.1, 8 banks
[11:16:19][ 0.856452] Switched to clocksource timebase
[11:16:19][ 0.938638] NET: Registered protocol family 2
[11:16:19][ 0.943548] TCP established hash table entries: 32768 (order: 6, 262144 bytes)
[11:16:19][ 0.950995] TCP bind hash table entries: 32768 (order: 8, 1835008 bytes)
[11:16:19][ 0.958522] TCP: Hash tables configured (established 32768 bind 32768)
[11:16:19][ 0.965062] UDP hash table entries: 2048 (order: 6, 262144 bytes)
[11:16:19][ 0.971211] UDP-Lite hash table entries: 2048 (order: 6, 262144 bytes)
[11:16:19][ 0.978037] NET: Registered protocol family 1
[11:16:19][ 0.982635] RPC: Registered named UNIX socket transport module.
[11:16:19][ 0.988465] RPC: Registered udp transport module.
[11:16:19][ 0.993157] RPC: Registered tcp transport module.
[11:16:19][ 0.997848] RPC: Registered tcp NFSv4.1 backchannel transport module.
[11:16:19][ 1.004580] Trying to unpack rootfs image as initramfs...
[11:16:19][ 1.010295] rootfs image is not initramfs (no cpio magic); looks like an initrd
[11:16:19][ 1.165289] Freeing initrd memory: 33328K (c000000001f73000 - c000000003fff000)
[11:16:19][ 1.173839] cryptomgr_test (107) used greatest stack depth: 13088 bytes left
[11:16:19][ 1.177520] futex hash table entries: 2048 (order: 6, 262144 bytes)
[11:16:19][ 1.188074] HugeTLB registered 256 MB page size, pre-allocated 1 pages
[11:16:19][ 1.194515] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[11:16:19][ 1.200857] HugeTLB registered 16 MB page size, pre-allocated 0 pages
[11:16:19][ 1.207286] HugeTLB registered 64 MB page size, pre-allocated 0 pages
[11:16:19][ 1.213715] HugeTLB registered 1 GB page size, pre-allocated 0 pages
[11:16:19][ 1.232208] VFS: Disk quotas dquot_6.6.0
[11:16:19][ 1.236249] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[11:16:19][ 1.247192] NFS: Registering the id_resolver key type
[11:16:19][ 1.252179] Key type id_resolver registered
[11:16:19][ 1.256324] Key type id_legacy registered
[11:16:19][ 1.260363] jffs2: version 2.2. (NAND) 漏 2001-2006 Red Hat, Inc.
[11:16:19][ 1.267774] cryptomgr_test (112) used greatest stack depth: 12592 bytes left
[11:16:19][ 1.276525] cryptomgr_test (132) used greatest stack depth: 11424 bytes left
[11:16:19][ 1.278812] NET: Registered protocol family 38
[11:16:19][ 1.278825] Key type asymmetric registered
[11:16:19][ 1.278832] Asymmetric key parser 'x509' registered
[11:16:19][ 1.279100] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[11:16:19][ 1.279111] io scheduler noop registered
[11:16:19][ 1.279118] io scheduler deadline registered
[11:16:19][ 1.279328] io scheduler cfq registered (default)
[11:16:19][ 1.336866] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[11:16:19][ 1.345077] serial8250.0: ttyS0 at MMIO 0xffe11c500 (irq = 36, base_baud = 20833333) is a 16550A
[11:16:19]J+HH悙1.358260] serial8250.0: ttyS1 at MMIO 0xffe11c600 (irq = 36, base_baud = 20833333) is a 16550A
[11:16:19][ 1.366991] console [ttyS1] enabled
[11:16:19][ 1.366991] console [ttyS1] enabled
[11:16:20][ 1.373914] bootconsole [udbg0] disabled
[11:16:20][ 1.373914] bootconsole [udbg0] disabled
[11:16:20][ 1.382705] serial8250.0: ttyS2 at MMIO 0xffe11d500 (irq = 37, base_baud = 20833333) is a 16550A
[11:16:20][ 1.392480] serial8250.0: ttyS3 at MMIO 0xffe11d600 (irq = 37, base_baud = 20833333) is a 16550A
[11:16:20][ 1.409959] brd: module loaded
[11:16:20][ 1.418445] loop: module loaded
[11:16:20][ 1.426709] fe8000000.nor: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000001 Chip ID 0x002801
[11:16:20][ 1.436803] Amd/Fujitsu Extended Query Table at 0x0040
[11:16:20][ 1.441948] Amd/Fujitsu Extended Query version 1.5.
[11:16:20][ 1.447001] number of CFI chips: 1
[11:16:20][ 1.451033] 18 ofpart partitions found on MTD device fe8000000.nor
[11:16:20][ 1.457212] Creating 18 MTD partitions on "fe8000000.nor":
[11:16:20][ 1.574676] nand: device found, Manufacturer ID: 0x01, Chip ID: 0xac
[11:16:20][ 1.581029] nand: AMD/Spansion S34MS04G1
[11:16:20][ 1.584950] nand: 512 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[11:16:20][ 1.593035] Bad block table found at page 262080, version 0x01
[11:16:20][ 1.599731] Bad block table found at page 262016, version 0x01
[11:16:20][ 1.606007] nand_read_bbt: bad block at 0x000011700000
[11:16:20][ 1.611573] 1 ofpart partitions found on MTD device fff800000.flash
[11:16:20][ 1.617839] Creating 1 MTD partitions on "fff800000.flash":
[11:16:20][ 1.623411] 0x000000000000-0x000020000000 : "user"
[11:16:20][ 1.629389] fsl,ifc-nand fff800000.nand: IFC NAND device at 0xfff800000, bank 1
[11:16:20][ 1.637595] nand: device found, Manufacturer ID: 0x01, Chip ID: 0xac
[11:16:20][ 1.643947] nand: AMD/Spansion S34MS04G1
[11:16:20][ 1.647868] nand: 512 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[11:16:20][ 1.655937] Bad block table found at page 262080, version 0x01
[11:16:20][ 1.662633] Bad block table found at page 262016, version 0x01
[11:16:20][ 1.668930] nand_read_bbt: bad block at 0x000004ec0000
[11:16:20][ 1.674068] nand_read_bbt: bad block at 0x000008bc0000
[11:16:20][ 1.679623] 1 ofpart partitions found on MTD device fff810000.flash
[11:16:20][ 1.685889] Creating 1 MTD partitions on "fff810000.flash":
[11:16:20][ 1.691461] 0x000000000000-0x000020000000 : "log"
[11:16:20][ 1.697327] fsl,ifc-nand fff810000.nand2: IFC NAND device at 0xfff810000, bank 2
[11:16:20][ 1.705605] fsl_espi ffe110000.spi: cs=0, init_csmode=0x100108
[11:16:20][ 1.711440] fsl_espi ffe110000.spi: cs=1, init_csmode=0x100108
[11:16:20][ 1.717792] fsl_espi ffe110000.spi: at 0x80000800809de000 (irq = 53)
[11:16:20][ 1.724872] libphy: Fixed MDIO Bus: probed
[11:16:20][ 1.730192] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.736218] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.741290] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.746362] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.751431] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.756536] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.761604] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.766673] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.771742] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.776814] libphy: Freescale XGMAC MDIO Bus: probed
[11:16:20][ 1.803052] Freescale FM module, FMD API version 21.1.0
[11:16:20][ 1.815964] Freescale FM Ports module
[11:16:20][ 1.819627] fsl_mac: fsl_mac: FSL FMan MAC API based driver
[11:16:20][ 1.826059] fsl_mac ffe4e0000.ethernet: FMan MEMAC
[11:16:20][ 1.830855] fsl_mac ffe4e0000.ethernet: FMan MAC address: 00:27:1d:00:00:0a
[11:16:20][ 1.838662] fsl_mac ffe4e2000.ethernet: FMan MEMAC
[11:16:20][ 1.843455] fsl_mac ffe4e2000.ethernet: FMan MAC address: 00:27:1d:00:00:0b
[11:16:20][ 1.850997] fsl_mac ffe4e4000.ethernet: FMan MEMAC
[11:16:20][ 1.855791] fsl_mac ffe4e4000.ethernet: FMan MAC address: 00:27:1d:28:e7:6b
[11:16:20][ 1.863579] fsl_mac ffe4e6000.ethernet: FMan MEMAC
[11:16:20][ 1.868373] fsl_mac ffe4e6000.ethernet: FMan MAC address: 00:27:1d:28:e7:6b
[11:16:20][ 1.875501] fsl_dpa: FSL DPAA Ethernet driver
[11:16:20][ 1.880478] fsl_mac ffe4e0000.ethernet: /soc@ffe000000/fman@400000/ethernet@e0000: ptp 1588 is initialized.
[11:16:20][ 1.907206] [dpaa_eth_priv_probe] , net_dev bpid = 32
[11:16:20][ 1.915023] fsl_dpa: fsl_dpa: Probed interface eth0
[11:16:20][ 1.920183] fsl_mac ffe4e2000.ethernet: /soc@ffe000000/fman@400000/ethernet@e2000: ptp 1588 is initialized.
[11:16:20][ 1.930297] [dpaa_eth_priv_probe] , net_dev bpid = 32
[11:16:20][ 1.937048] fsl_dpa: fsl_dpa: Probed interface eth1
[11:16:20][ 1.942140] fsl_mac ffe4e4000.ethernet: /soc@ffe000000/fman@400000/ethernet@e4000: ptp 1588 is initialized.
[11:16:20][ 1.952245] [dpaa_eth_priv_probe] , net_dev bpid = 32
[11:16:20][ 1.958948] fsl_dpa: fsl_dpa: Probed interface eth2
[11:16:20][ 1.964042] fsl_mac ffe4e6000.ethernet: /soc@ffe000000/fman@400000/ethernet@e6000: ptp 1588 is initialized.
[11:16:20][ 1.974145] [dpaa_eth_priv_probe] , net_dev bpid = 32
[11:16:20][ 1.980914] fsl_dpa: fsl_dpa: Probed interface eth3
[11:16:20][ 1.985891] cpu1/8: ! MAJOR FM-RTC Error [CPU01, ../drivers/net/ethernet/freescale/sdk_fman/Peripherals/FM/Rtc/fm_rtc.c:482 FM_RTC_SetAlarm]: Invalid Selection;
[11:16:20][ 2.000151] cpu1/8: Alarm time must be a multiple of RTC period - 8 nanoseconds[ 2.007461] cpu1/8:
[11:16:20][ 2.009729] FM_RTC_SetAlarm = 0x0004002b
[11:16:20][ 2.013653] cpu1/8: ! MAJOR FM-RTC Error [CPU01, ../drivers/net/ethernet/freescale/sdk_fman/Peripherals/FM/Rtc/fm_rtc.c:520 FM_RTC_SetPeriodicPulse]: Invalid Selection;
[11:16:20][ 2.028606] cpu1/8: Periodic pulse must be a multiple of RTC period - 8 nanoseconds[ 2.036263] cpu1/8:
[11:16:20][ 2.038531] FM_RTC_SetPeriodicPulse = 0x0004002b
[11:16:20][ 2.043485] pps pps0: new PPS source ptp0
[11:16:20][ 2.047497] fsl_advanced: FSL DPAA Advanced drivers:
[11:16:20][ 2.052488] fsl_proxy: FSL DPAA Proxy initialization driver
[11:16:20][ 2.058522] fsl_dpa_shared: FSL DPAA Shared Ethernet driver
[11:16:20][ 2.064535] fsl_dpa_macless: FSL DPAA MACless Ethernet driver
[11:16:20][ 2.070668] fsl_oh: FSL FMan Offline Parsing port driver
[11:16:20][ 2.076387] fsl_oh fsl,dpaa:dpa-fman0-oh@3: Found OH node handle compatible with fsl,dpa-oh
[11:16:20][ 2.084864] fsl_oh fsl,dpaa:dpa-fman0-oh@3: Allocating 0 ingress frame queues duples
[11:16:20][ 2.092744] fsl_oh fsl,dpaa:dpa-fman0-oh@3: IP Fragmentation enabled for OH port 2
[11:16:20][ 2.100565] fsl_oh fsl,dpaa:dpa-fman0-oh@3: OH port /soc@ffe000000/fman@400000/port@84000 enabled.
[11:16:20][ 2.109525] fsl_oh fsl,dpaa:dpa-fman0-oh@3: Default egress frame queue: 4055
[11:16:20][ 2.116574] fsl_oh fsl,dpaa:dpa-fman0-oh@3: Default error frame queue: 4054
[11:16:20][ 2.123535] fsl_oh fsl,dpaa:dpa-fman0-oh@3: Initialized queues:
[11:16:20][ 2.130261] fsl-of-dma ffe100300.dma: dma channel dma-uio0-0 initialized
[11:16:20][ 2.137262] fsl-of-dma ffe100300.dma: dma channel dma-uio0-1 initialized
[11:16:20][ 2.144272] fsl-of-dma ffe100300.dma: dma channel dma-uio0-2 initialized
[11:16:20][ 2.151280] fsl-of-dma ffe100300.dma: dma channel dma-uio0-3 initialized
[11:16:20][ 2.158287] fsl-of-dma ffe100300.dma: dma channel dma-uio0-4 initialized
[11:16:20][ 2.165291] fsl-of-dma ffe100300.dma: dma channel dma-uio0-5 initialized
[11:16:20][ 2.172303] fsl-of-dma ffe100300.dma: dma channel dma-uio0-6 initialized
[11:16:20][ 2.179313] fsl-of-dma ffe100300.dma: dma channel dma-uio0-7 initialized
[11:16:20][ 2.186353] fsl-of-dma ffe101300.dma: dma channel dma-uio1-0 initialized
[11:16:20][ 2.193360] fsl-of-dma ffe101300.dma: dma channel dma-uio1-1 initialized
[11:16:20][ 2.200370] fsl-of-dma ffe101300.dma: dma channel dma-uio1-2 initialized
[11:16:20][ 2.207388] fsl-of-dma ffe101300.dma: dma channel dma-uio1-3 initialized
[11:16:20][ 2.214402] fsl-of-dma ffe101300.dma: dma channel dma-uio1-4 initialized
[11:16:20][ 2.221418] fsl-of-dma ffe101300.dma: dma channel dma-uio1-5 initialized
[11:16:20][ 2.228472] fsl-of-dma ffe101300.dma: dma channel dma-uio1-6 initialized
[11:16:20][ 2.235475] fsl-of-dma ffe101300.dma: dma channel dma-uio1-7 initialized
[11:16:20][ 2.242308] i2c /dev entries driver
[11:16:20][ 2.246568] mpc-i2c ffe118000.i2c: timeout 1000000 us
[11:16:20][ 2.251914] at24 0-0050: 8192 byte 24c64 EEPROM, writable, 1 bytes/write
[11:16:20][ 2.258764] mpc-i2c ffe118100.i2c: timeout 1000000 us
[11:16:20][ 2.264254] mpc-i2c ffe119000.i2c: timeout 1000000 us
[11:16:20][ 2.269753] mpc-i2c ffe119100.i2c: timeout 1000000 us
[11:16:20][ 2.276053] lm75 2-0048: hwmon0: sensor 'lm75'
[11:16:21][ 2.381449] lm90 2-004c: device is in standby mode
[11:16:21][ 2.386590] lm90 2-004c: put device to run mode
[11:16:21][ 2.402117] zl6100 1-0019: Device ID ZLS1003-002FE07F
[11:16:21][ 2.511385] booke_wdt: powerpc book-e watchdog driver loaded
[11:16:21][ 2.517262] Freescale(R) MPC85xx EDAC driver, (C) 2006 Montavista Software
[11:16:21][ 2.525248] EDAC MC0: Giving out device to module MPC85xx_edac controller mpc85xx_mc_err: DEV mpc85xx_mc_err (INTERRUPT)
[11:16:21][ 2.536263] MPC85xx_edac acquired irq 475 for MC
[11:16:21][ 2.540878] MPC85xx_edac MC err registered
[11:16:21][ 2.545867] EDAC MC1: Giving out device to module MPC85xx_edac controller mpc85xx_mc_err: DEV mpc85xx_mc_err (INTERRUPT)
[11:16:21][ 2.556871] MPC85xx_edac acquired irq 476 for MC
[11:16:21][ 2.561486] MPC85xx_edac MC err registered
[11:16:21][ 2.568659] platform caam_qi: Linux CAAM Queue I/F driver initialised
[11:16:21][ 2.575104] caam ffe300000.crypto: Instantiated RNG4 SH1
[11:16:21][ 2.580571] caam ffe300000.crypto: device ID = 0x0a11020000000000 (Era 5)
[11:16:21][ 2.587359] caam ffe300000.crypto: job rings = 4, qi = 1
[11:16:21][ 2.598560] caam algorithms registered in /proc/crypto
[11:16:21][ 2.605998] platform caam_qi: algorithms registered in /proc/crypto
[11:16:21][ 2.614599] caam_jr ffe301000.jr: registering rng-caam
[11:16:21][ 2.620313] caam ffe300000.crypto: fsl,sec-v5.3 algorithms registered in /proc/crypto
[11:16:21][ 2.628527] fsl-of-rman ffe1e0000.rman: Of-device /soc@ffe000000/rman@1e0000 initialized
[11:16:21][ 2.636843] fsl-of-rman ffe1e0000.rman: RMan inbound block0 initialized.
[11:16:21][ 2.643713] fsl-of-rman ffe1e0000.rman: RMan inbound block1 initialized.
[11:16:21][ 2.650702] fsl-of-rman ffe1e0000.rman: RMan inbound block2 initialized.
[11:16:21][ 2.657567] fsl-of-rman ffe1e0000.rman: RMan inbound block3 initialized.
[11:16:21][ 2.666724] Freescale USDPAA process driver
[11:16:21][ 2.670999] Freescale USDPAA process IRQ driver
[11:16:21][ 2.676130] dce_sys_init done!
[11:16:21][ 2.679703] No fsl,dce node
[11:16:21][ 2.683018] Freescale pme2 db driver
[11:16:21][ 2.686590] PME2: fsl_pme2_db_init: not on ctrl-plane
[11:16:21][ 2.691644] Freescale pme2 scan driver
[11:16:21][ 2.695474] fsl-pme2-scan: device pme_scan registered
[11:16:21][ 2.700638] DPA Classifier Driver initialized.
[11:16:21][ 2.705183] DPA IPSec Driver initialized.
[11:16:21][ 2.709299] DPA Stats Driver initialized.
[11:16:21][ 2.713347] u32 classifier
[11:16:21][ 2.716048] Actions configured
[11:16:21][ 2.719463] Netfilter messages via NETLINK v0.30.
[11:16:21][ 2.724208] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[11:16:21][ 2.730749] nf_tables: (c) 2007-2009 Patrick McHardy <kaber@trash.net>
[11:16:21][ 2.737652] ip_tables: (C) 2000-2006 Netfilter Core Team
[11:16:21][ 2.743057] ipt_CLUSTERIP: ClusterIP Version 0.8 loaded successfully
[11:16:21][ 2.749454] Initializing XFRM netlink socket
[11:16:21][ 2.754577] NET: Registered protocol family 10
[11:16:21][ 2.759979] sit: IPv6 over IPv4 tunneling driver
[11:16:21][ 2.765120] NET: Registered protocol family 17
[11:16:21][ 2.769584] NET: Registered protocol family 15
[11:16:21][ 2.774085] 8021q: 802.1Q VLAN Support v1.8
[11:16:21][ 2.778324] sctp: Hash tables configured (established 73 bind 64/73)
[11:16:21][ 2.785147] Key type dns_resolver registered
[11:16:21][ 2.790807] console [netcon0] enabled
[11:16:21][ 2.794465] netconsole: network logging started
[11:16:21][ 2.798997] fsl_generic: FSL DPAA Generic Ethernet driver
[11:16:21][ 2.808574] RAMDISK: gzip image found at block 0
[11:16:24]** 267134 printk messages dropped ** [ 5.376041] [c0000000f2b73a80] [c0000000001e29a0] .__fput+0x1a0/0x290
[11:16:24]** 2313 printk messages dropped ** [ 5.385720] ---[ end trace 000000000000218d ]---
[11:16:24]** 1833 printk messages dropped ** [ 5.393380] ---[ end trace 00000000000021c8 ]---
[11:16:24]** 1839 printk messages dropped ** [ 5.401061] Call Trace:
[11:16:24]** 1324 printk messages dropped ** [ 5.406524] 81480010 38caffff 7cc65378 54c60ffe <0b060000> 394affff 2f8a0000 91480010
[11:16:24]** 2636 printk messages dropped ** [ 5.417492] NIP [c0000000000472f8] .unpin_current_cpu+0x48/0x90
[11:16:24]** 2155 printk messages dropped ** [ 5.426455] [c0000000f2b73520] [c00000000007eedc] .migrate_enable+0xec/0x270
[11:16:24]** 2432 printk messages dropped ** [ 5.436575] [c0000000f1143c60] [c000000000076a14] .smpboot_thread_fn+0x334/0x4b0
[11:16:24]** 2514 printk messages dropped ** [ 5.446983] Instruction dump:
[11:16:24]** 1436 printk messages dropped ** [ 5.452977] [c0000000f2b739c0] [c0000000001fd7c0] .dput+0x320/0x400
[11:16:24]** 2242 printk messages dropped ** [ 5.462284] NIP [c0000000000472f8] .unpin_current_cpu+0x48/0x90
[11:16:24]** 2164 printk messages dropped ** [ 5.471259] NIP [c0000000000472f8] .unpin_current_cpu+0x48/0x90
[11:16:24]** 2158 printk messages dropped ** [ 5.480233] SOFTE: 1

[yipingwang]

Hello zhiming qiu,

It seems that this problem has already been fixed in SDK 2.0 1701 release.

I built RT Kernel as the following configuration in SDK 2.0 1703 build environment, I didn't reproduce your problem on B4860QDS.

Kernel options --->
        Preemption Model (Fully Preemptible Kernel (RT)) --->
                    (X) Fully Preemptible Kernel (RT)

Would you please try whether your problem remains with my Kernel uImage, I uploaded as the following.

https://drive.google.com/open?id=1vG9NUAlxgEA3JjKwbb19x-wKNc6LqIpe

Thanks,

Yiping

[zhimingqiu]

hello Yiping Wang,

Thanks for your reply。As you mentioned above，I have checked my config which is same with you . can you offer the .config file and the Modification instructions for  this problem in SDK 2.0 1701 to me?  

PS：The above problems need to be restarted many times；

[yipingwang]

Please refer to the attached Kernel configuration file.

[zhimingqiu]

hello Yiping Wang,

I compared your configuration with mine.we find :  When we disabled the following options,The above problems did not appear in 24 hours；howerver,I need to use the following options in my project. You can test this problem by enabling the following options. Looking forward to your reply again.

Thanks,