I have the kernel not completely loading on my device (Linksys EA8500).
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.14.131 (buildbot@c2c312384f99) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r7808-ef686b7292)) #0 SMP Thu Jun 27 12:18:52 2019
[ 0.000000] CPU: ARMv7 Processor [512f04d0] revision 0 (ARMv7), cr=10c5787d
[ 0.000000] CPU: div instructions available: patching division code
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[ 0.000000] OF: fdt: Machine model: Linksys EA8500 WiFi Router
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] random: get_random_bytes called from 0xc09008dc with crng_init=0
[ 0.000000] percpu: Embedded 15 pages/cpu s29388 r8192 d23860 u61440
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 121920
[ 0.000000] Kernel command line: console=ttyMSM0,115200n8
[ 0.000000] Bootloader command line (ignored): console=ttyHSL1,115200n8
[ 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: 479428K/491520K available (4910K kernel code, 161K rwdata, 756K rodata, 1024K init, 234K bss, 12092K reserved, 0K cma-reserved, 0K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xde800000 - 0xff800000 ( 528 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xde000000 ( 480 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0208000 - 0xc07cbb08 (5903 kB)
[ 0.000000] .init : 0xc0900000 - 0xc0a00000 (1024 kB)
[ 0.000000] .data : 0xc0a00000 - 0xc0a287c0 ( 162 kB)
[ 0.000000] .bss : 0xc0a2a000 - 0xc0a64a98 ( 235 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] clocksource: dg_timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 305801671480 ns
[ 0.000006] sched_clock: 32 bits at 6MHz, resolution 160ns, wraps every 343597383600ns
[ 0.000019] Switching to timer-based delay loop, resolution 160ns
[ 0.000225] Calibrating delay loop (skipped), value calculated using timer frequency.. 12.50 BogoMIPS (lpj=62500)
[ 0.000250] pid_max: default: 32768 minimum: 301
[ 0.000375] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000393] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000963] CPU: Testing write buffer coherency: ok
[ 0.001731] Setting up static identity map for 0x42300000 - 0x42300060
[ 0.001887] Hierarchical SRCU implementation.
[ 0.002627] smp: Bringing up secondary CPUs ...
[ 0.004419] smp: Brought up 1 node, 2 CPUs
[ 0.004436] SMP: Total of 2 processors activated (25.00 BogoMIPS).
[ 0.004446] CPU: All CPU(s) started in SVC mode.
[ 0.014945] VFP support v0.3: implementor 51 architecture 64 part 4d variant 2 rev 0
[ 0.015100] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.015127] futex hash table entries: 512 (order: 3, 32768 bytes)
[ 0.015242] pinctrl core: initialized pinctrl subsystem
[ 0.016210] NET: Registered protocol family 16
[ 0.016469] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.017808] cpuidle: using governor ladder
[ 0.017871] cpuidle: using governor menu
[ 0.040593] msm_bus_fabric_init_driver
[ 0.042149] usbcore: registered new interface driver usbfs
[ 0.042238] usbcore: registered new interface driver hub
[ 0.042325] usbcore: registered new device driver usb
[ 0.042377] pps_core: LinuxPPS API ver. 1 registered
[ 0.042389] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.042420] PTP clock support registered
[ 0.044131] clocksource: Switched to clocksource dg_timer
[ 0.047434] NET: Registered protocol family 2
[ 0.048021] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.048062] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.048118] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.048208] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.048238] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.048418] NET: Registered protocol family 1
[ 0.049606] No memory allocated for crashlog
[ 0.049896] workingset: timestamp_bits=30 max_order=17 bucket_order=0
[ 0.055046] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.055060] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.062021] io scheduler noop registered
[ 0.062042] io scheduler deadline registered (default)
[ 0.063888] qcom-pcie 1b500000.pci: 1b500000.pci supply vdda not found, using dummy regulator
[ 0.063996] qcom-pcie 1b500000.pci: 1b500000.pci supply vdda_phy not found, using dummy regulator
[ 0.064088] qcom-pcie 1b500000.pci: 1b500000.pci supply vdda_refclk not found, using dummy regulator
[ 0.064889] OF: PCI: host bridge /soc/pci@1b500000 ranges:
[ 0.064937] OF: PCI: IO 0x0fe00000..0x0fefffff -> 0x0fe00000
[ 0.064964] OF: PCI: MEM 0x08000000..0x0fdfffff -> 0x08000000
[ 0.173053] qcom-pcie 1b500000.pci: link up
[ 0.173215] qcom-pcie 1b500000.pci: PCI host bridge to bus 0000:00
[ 0.173237] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.173256] pci_bus 0000:00: root bus resource [io 0x0000-0xfffff] (bus address [0xfe00000-0xfefffff])
[ 0.173271] pci_bus 0000:00: root bus resource [mem 0x08000000-0x0fdfffff]
[ 0.173805] PCI: bus0: Fast back to back transfers disabled
[ 0.176281] PCI: bus1: Fast back to back transfers disabled
[ 0.176381] pci 0000:00:00.0: BAR 8: assigned [mem 0x08000000-0x081fffff]
[ 0.176406] pci 0000:01:00.0: BAR 0: assigned [mem 0x08000000-0x081fffff 64bit]
[ 0.176542] pci 0000:00:00.0: PCI bridge to [bus 01-ff]
[ 0.176566] pci 0000:00:00.0: bridge window [mem 0x08000000-0x081fffff]
[ 0.177108] pcieport 0000:00:00.0: AER enabled with IRQ 36
[ 0.177642] qcom-pcie 1b700000.pci: 1b700000.pci supply vdda not found, using dummy regulator
[ 0.177740] qcom-pcie 1b700000.pci: 1b700000.pci supply vdda_phy not found, using dummy regulator
[ 0.177844] qcom-pcie 1b700000.pci: 1b700000.pci supply vdda_refclk not found, using dummy regulator
[ 0.178511] OF: PCI: host bridge /soc/pci@1b700000 ranges:
[ 0.178548] OF: PCI: IO 0x31e00000..0x31efffff -> 0x31e00000
[ 0.178574] OF: PCI: MEM 0x2e000000..0x31dfffff -> 0x2e000000
[ 0.288484] qcom-pcie 1b700000.pci: link up
[ 0.288628] qcom-pcie 1b700000.pci: PCI host bridge to bus 0001:00
[ 0.288646] pci_bus 0001:00: root bus resource [bus 00-ff]
[ 0.288661] pci_bus 0001:00: root bus resource [mem 0x2e000000-0x31dfffff]
[ 0.289125] PCI: bus0: Fast back to back transfers disabled
[ 0.291325] PCI: bus1: Fast back to back transfers disabled
[ 0.291412] pci 0001:00:00.0: BAR 8: assigned [mem 0x2e000000-0x2e1fffff]
[ 0.291435] pci 0001:01:00.0: BAR 0: assigned [mem 0x2e000000-0x2e1fffff 64bit]
[ 0.291558] pci 0001:00:00.0: PCI bridge to [bus 01-ff]
[ 0.291580] pci 0001:00:00.0: bridge window [mem 0x2e000000-0x2e1fffff]
[ 0.292060] pcieport 0001:00:00.0: AER enabled with IRQ 69
[ 0.292598] qcom-pcie 1b900000.pci: 1b900000.pci supply vdda not found, using dummy regulator
[ 0.292701] qcom-pcie 1b900000.pci: 1b900000.pci supply vdda_phy not found, using dummy regulator
[ 0.292791] qcom-pcie 1b900000.pci: 1b900000.pci supply vdda_refclk not found, using dummy regulator
[ 0.293442] OF: PCI: host bridge /soc/pci@1b900000 ranges:
[ 0.293481] OF: PCI: IO 0x35e00000..0x35efffff -> 0x35e00000
[ 0.293506] OF: PCI: MEM 0x32000000..0x35dfffff -> 0x32000000
[ 1.327400] qcom-pcie 1b900000.pci: phy link never came up
[ 1.329386] qcom-pcie 1b900000.pci: cannot initialize host
[ 1.329981] qcom-pcie: probe of 1b900000.pci failed with error -110
[ 1.332192] L2 @ QSB rate. Forcing new rate.
[ 1.332407] L2 @ 384000 KHz
[ 1.332581] CPU0 @ 800000 KHz
[ 1.332594] CPU1 @ QSB rate. Forcing new rate.
[ 1.332717] CPU1 @ 384000 KHz
[ 1.336696] gsbi 16300000.gsbi: GSBI port protocol: 6 crci: 0
[ 1.338602] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[ 1.341168] msm_serial 16340000.serial: msm_serial: detected port #0
[ 1.341262] msm_serial 16340000.serial: uartclk = 7372800
[ 1.341346] 16340000.serial: ttyMSM0 at MMIO 0x16340000 (irq = 134, base_baud = 460800) is a MSM
[ 1.341383] msm_serial: console setup on port #0
[ 2.124332] console [ttyMSM0] enabled
[ 2.129194] msm_serial: driver initialized
[ 2.137743] loop: module loaded
[ 2.139776] nand: device found, Manufacturer ID: 0xc2, Chip ID: 0xaa
[ 2.139813] nand: Macronix MX30UF2G18AC
[ 2.146382] nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[ 2.150036] 18 fixed-partitions partitions found on MTD device qcom_nand.0
[ 2.157565] Creating 18 MTD partitions on "qcom_nand.0":
[ 2.164353] 0x000000000000-0x000000040000 : "SBL1"
[ 2.171184] 0x000000040000-0x000000180000 : "MIBIB"
[ 2.177427] 0x000000180000-0x0000002c0000 : "SBL2"
[ 2.182055] 0x0000002c0000-0x000000540000 : "SBL3"
[ 2.184267] random: fast init done
[ 2.193717] 0x000000540000-0x000000660000 : "DDRCONFIG"
[ 2.196488] 0x000000660000-0x000000780000 : "SSD"
[ 2.200428] 0x000000780000-0x000000a00000 : "TZ"
[ 2.207727] 0x000000a00000-0x000000c80000 : "RPM"
[ 2.212740] 0x000000c80000-0x000000dc0000 : "art"
[ 2.215712] 0x000000dc0000-0x000000ec0000 : "APPSBL"
[ 2.219058] 0x000000ec0000-0x000000f00000 : "u_env"
[ 2.222847] 0x000000f00000-0x000000f40000 : "s_env"
[ 2.227465] 0x000000f40000-0x000000f80000 : "devinfo"
[ 2.232260] 0x000000f80000-0x000003780000 : "kernel1"
[ 2.305773] 0x000001280000-0x000003780000 : "rootfs1"
[ 2.370078] 0x000003780000-0x000005f80000 : "kernel2"
[ 2.439652] 0x000003a80000-0x000005f80000 : "rootfs2"
[ 2.498725] random: crng init done
[ 2.504005] 0x000005f80000-0x000008000000 : "syscfg"
[ 2.562467] libphy: GPIO Bitbanged MDIO: probed
[ 2.583612] switch0: Atheros AR8337 rev. 2 switch registered on gpio-0
[ 3.426140] libphy: Fixed MDIO Bus: probed
[ 3.427641] ipq806x-gmac-dwmac 37200000.ethernet: PTP uses main clock
[ 3.429450] stmmac - user ID: 0x10, Synopsys ID: 0x37
[ 3.435733] ipq806x-gmac-dwmac 37200000.ethernet: Ring mode enabled
[ 3.440682] ipq806x-gmac-dwmac 37200000.ethernet: DMA HW capability register supported
[ 3.446852] ipq806x-gmac-dwmac 37200000.ethernet: Enhanced/Alternate descriptors
[ 3.454809] ipq806x-gmac-dwmac 37200000.ethernet: Enabled extended descriptors
[ 3.462299] ipq806x-gmac-dwmac 37200000.ethernet: RX Checksum Offload Engine supported
[ 3.469400] ipq806x-gmac-dwmac 37200000.ethernet: COE Type 2
[ 3.477301] ipq806x-gmac-dwmac 37200000.ethernet: TX Checksum insertion supported
[ 3.483043] ipq806x-gmac-dwmac 37200000.ethernet: Wake-Up On Lan supported
[ 3.490499] ipq806x-gmac-dwmac 37200000.ethernet (unnamed net_device) (uninitialized): device MAC address 52:64:2e:2f:d7:56
[ 3.497270] ipq806x-gmac-dwmac 37200000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[ 3.509847] ipq806x-gmac-dwmac 37400000.ethernet: PTP uses main clock
[ 3.517176] stmmac - user ID: 0x10, Synopsys ID: 0x37
[ 3.523232] ipq806x-gmac-dwmac 37400000.ethernet: Ring mode enabled
[ 3.528351] ipq806x-gmac-dwmac 37400000.ethernet: DMA HW capability register supported
[ 3.534405] ipq806x-gmac-dwmac 37400000.ethernet: Enhanced/Alternate descriptors
[ 3.542330] ipq806x-gmac-dwmac 37400000.ethernet: Enabled extended descriptors
[ 3.549966] ipq806x-gmac-dwmac 37400000.ethernet: RX Checksum Offload Engine supported
[ 3.556996] ipq806x-gmac-dwmac 37400000.ethernet: COE Type 2
[ 3.564899] ipq806x-gmac-dwmac 37400000.ethernet: TX Checksum insertion supported
[ 3.570629] ipq806x-gmac-dwmac 37400000.ethernet: Wake-Up On Lan supported
[ 3.578097] ipq806x-gmac-dwmac 37400000.ethernet (unnamed net_device) (uninitialized): device MAC address f2:48:a4:50:96:99
[ 3.584863] ipq806x-gmac-dwmac 37400000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[ 3.596563] i2c /dev entries driver
[ 3.605408] Calibration not found.
[ 3.608836] Speed bin: 0
[ 3.611158] PVS bin: 1
[ 3.615179] cpuidle: enable-method property 'qcom,kpss-acc-v1' found operations
[ 3.616094] cpuidle: enable-method property 'qcom,kpss-acc-v1' found operations
[ 3.623737] sdhci: Secure Digital Host Controller Interface driver
[ 3.630600] sdhci: Copyright(c) Pierre Ossman
[ 3.636841] sdhci-pltfm: SDHCI platform and OF driver helper
[ 3.642743] NET: Registered protocol family 10
[ 3.648420] Segment Routing with IPv6
[ 3.651254] NET: Registered protocol family 17
[ 3.655086] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 3.659886] 8021q: 802.1Q VLAN Support v1.8
[ 3.672488] Registering SWP/SWPB emulation handler
[ 3.688462] qcom_rpm 108000.rpm: RPM firmware 3.0.16777372
[ 3.700546] s1a: supplied by regulator-dummy
[ 3.700637] s1a: Bringing 0uV into 1050000-1050000uV
[ 3.704138] s1b: supplied by regulator-dummy
[ 3.708989] s1b: Bringing 0uV into 1050000-1050000uV
[ 3.713326] s2a: supplied by regulator-dummy
[ 3.718164] s2a: Bringing 0uV into 800000-800000uV
[ 3.722517] s2b: supplied by regulator-dummy
[ 3.727028] s2b: Bringing 0uV into 800000-80000пїЅ[ 3.737028] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[ 3.737060] Please append a correct "root=" boot option; here are the available partitions:
[ 3.743514] 1f00 256 mtdblock0
[ 3.743522] (driver?)
[ 3.755905] 1f01 1280 mtdblock1
[ 3.755914] (driver?)
[ 3.762325] 1f02 1280 mtdblock2
[ 3.762332] (driver?)
[ 3.768839] 1f03 2560 mtdblock3
[ 3.768847] (driver?)
[ 3.775438] 1f04 1152 mtdblock4
[ 3.775446] (driver?)
[ 3.781856] 1f05 1152 mtdblock5
[ 3.781864] (driver?)
[ 3.788455] 1f06 2560 mtdblock6
[ 3.788463] (driver?)
[ 3.794953] 1f07 2560 mtdblock7
[ 3.794961] (driver?)
[ 3.801388] 1f08 1280 mtdblock8
[ 3.801396] (driver?)
[ 3.807980] 1f09 1024 mtdblock9
[ 3.807988] (driver?)
[ 3.814478] 1f0a 256 mtdblock10
[ 3.814485] (driver?)
[ 3.821267] 1f0b 256 mtdblock11
[ 3.821274] (driver?)
[ 3.827951] 1f0c 256 mtdblock12
[ 3.827958] (driver?)
[ 3.834534] 1f0d 40960 mtdblock13
[ 3.834541] (driver?)
[ 3.841058] 1f0e 37888 mtdblock14
[ 3.841065] (driver?)
[ 3.847749] 1f0f 40960 mtdblock15
[ 3.847758] (driver?)
[ 3.854253] 1f10 37888 mtdblock16
[ 3.854260] (driver?)
[ 3.860852] 1f11 33280 mtdblock17
[ 3.860860] (driver?)
[ 3.867523] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 3.869641] CPU1: stopping
[ 3.877875] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.131 #0
[ 3.880560] Hardware name: Generic DT based system
[ 3.886736] Function entered at [<c030f1b8>] from [<c030b388>]
[ 3.891415] Function entered at [<c030b388>] from [<c07b0ed8>]
[ 3.897232] Function entered at [<c07b0ed8>] from [<c030e400>]
[ 3.903045] Function entered at [<c030e400>] from [<c03014b8>]
[ 3.908862] Function entered at [<c03014b8>] from [<c030bf8c>]
[ 3.914676] Exception stack(0xdd461f80 to 0xdd461fc8)
[ 3.920531] 1f80: 00000001 00000000 00000000 c0314f40 ffffe000 c0a03c74 c0a03c28 00000000
[ 3.925657] 1fa0: 00000000 512f04d0 00000000 00000000 dd461fc8 dd461fd0 c03086ac c03086b0
[ 3.933788] 1fc0: 60000013 ffffffff
[ 3.941932] Function entered at [<c030bf8c>] from [<c03086b0>]
[ 3.945233] Function entered at [<c03086b0>] from [<c034fdb8>]
[ 3.951137] Function entered at [<c034fdb8>] from [<c0350100>]
[ 3.956951] Function entered at [<c0350100>] from [<423017cc>]
[ 3.962779] Rebooting in 1 seconds..
The problem occurs because the partition table of the device flash memory is incompatible with the kernel. So, the kernel starts but then reboots my device. Is there any way to interrupt the kernel loading process via serial connection and to enter its console?
U-Boot recovery solutions are not suitable for me.
