acoul:

• Device problem occurs on
  MikroTik Routerboard RB-411 ag71xx

• Software versions of OpenWrt/LEDE release, packages, etc.
  trunk r14533

• Steps to reproduce
  netboot openwrt-ath79-mikrotik-mikrotik_routerboard-493g-initramfs-kernel.bin

Linux version 5.4.65 (alex@aifnis) (gcc version 9.3.0 (OpenWrt GCC 9.3.0 r14533-90a50020b0)) #0 Sat Sep 12 06:40:13 2020
printk: bootconsole [early0] enabled
CPU0 revision is: 00019374 (MIPS 24Kc)
MIPS: machine is MikroTik RouterBOARD 493G
SoC: Atheros AR7130 rev 2
Initrd not found or empty - disabling initrd
Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
Zone ranges:
Normal [mem 0x0000000000000000-0x0000000001ffffff]
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000000000-0x0000000001ffffff]
Initmem setup node 0 [mem 0x0000000000000000-0x0000000001ffffff]
Built 1 zonelists, mobility grouping on. Total pages: 8128
Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes, linear)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
Writing ErrCtl register=00000000
Readback ErrCtl register=00000000
mem auto-init: stack:off, heap alloc:off, heap free:off
Memory: 25064K/32768K available (4082K kernel code, 139K rwdata, 608K rodata, 2332K init, 185K bss, 7704K reserved, 0K cma-reserved)
NR_IRQS: 51
CPU clock: 300.000 MHz
clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 12741736309 ns
sched_clock: 32 bits at 150MHz, resolution 6ns, wraps every 14316557820ns
Calibrating delay loop... 199.68 BogoMIPS (lpj=399360)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
random: get_random_bytes called from 0x8052fc2c with crng_init=0
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
futex hash table entries: 256 (order: -1, 3072 bytes, linear)
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
PCI host bridge /ahb/apb/pcie-controller@17010000 ranges:
MEM 0x0000000010000000..0x0000000016ffffff
IO 0x0000000000000000..0x0000000000000000
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [mem 0x10000000-0x16ffffff]
pci_bus 0000:00: root bus resource [io 0x0000]
pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
pci 0000:00:12.0: [1260:3873] type 00 class 0x028000
pci 0000:00:12.0: reg 0x10: [mem 0x00000000-0x00000fff pref]
pci 0000:00:12.0: supports D1 D2
pci 0000:00:12.0: PME# supported from D0 D1 D2 D3hot
pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
pci 0000:00:12.0: BAR 0: assigned [mem 0x10000000-0x10000fff pref]
workqueue: max_active 576 requested for napi_workq is out of range, clamping between 1 and 512
clocksource: Switched to clocksource MIPS
NET: Registered protocol family 2
tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes, linear)
TCP: Hash tables configured (established 1024 bind 1024)
UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
NET: Registered protocol family 1
PCI: CLS 0 bytes, default 32
random: fast init done
workingset: timestamp_bits=30 max_order=13 bucket_order=0
squashfs: version 4.0 (2009/01/31) Phillip Lougher
jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
ar7100-usb-phy 18030000.usb-phy: phy reset is missing
ar7100-usb-phy: probe of 18030000.usb-phy failed with error -524
Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
printk: console [ttyS0] disabled
18020000.uart: ttyS0 at MMIO 0x18020000 (irq = 10, base_baud = 9375000) is a 16550A
printk: console [ttyS0] enabled
printk: console [ttyS0] enabled
printk: bootconsole [early0] disabled
printk: bootconsole [early0] disabled
rb4xx-gpio mikrotik,rb4xx-gpio: DMA mask not set
rb4xx-nand mikrotik,rb4xx-nand: DMA mask not set
nand: device found, Manufacturer ID: 0xad, Chip ID: 0x76
nand: Hynix NAND 64MiB 3,3V 8-bit
nand: 64 MiB, SLC, erase size: 16 KiB, page size: 512, OOB size: 16
Scanning device for bad blocks
spi-nor spi0.0: pm25lv512 (64 Kbytes)
1 routerbootpart partitions found on MTD device spi0.0
Creating 1 MTD partitions on "spi0.0":
0x000000000000-0x000000010000 : "partitions"
5 routerbootpart partitions found on MTD device partitions
Creating 5 MTD partitions on "partitions":
0x000000000000-0x00000000b000 : "routerboot1"
0x00000000b000-0x00000000c000 : "hard_config"
0x00000000c000-0x00000000d000 : "bios"
0x00000000d000-0x00000000f000 : "routerboot2"
0x00000000f000-0x000000010000 : "soft_config"
libphy: Fixed MDIO Bus: probed
ag71xx 19000000.eth: missing mac reset
ag71xx: probe of 19000000.eth failed with error -524
ag71xx 1a000000.eth: missing mac reset
ag71xx: probe of 1a000000.eth failed with error -524
MikroTik RouterBOARD hardware configuration sysfs driver v0.05
MikroTik RouterBOARD software configuration sysfs driver v0.03
NET: Registered protocol family 17
8021q: 802.1Q VLAN Support v1.8
Freeing unused kernel memory: 2332K
This architecture does not have kernel memory protection.
Run /init as init process
init: Console is alive
init: - watchdog -
kmodloader: no module folders for kernel version 5.4.65 found
init: - preinit -
random: jshn: uninitialized urandom read (4 bytes read)
random: jshn: uninitialized urandom read (4 bytes read)
random: jshn: uninitialized urandom read (4 bytes read)
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
procd: - early -
procd: - watchdog -
procd: - watchdog -
procd: - ubus -
urandom_read: 2 callbacks suppressed
random: ubusd: uninitialized urandom read (4 bytes read)
random: ubusd: uninitialized urandom read (4 bytes read)
random: ubusd: uninitialized urandom read (4 bytes read)
procd: - init -
Please press Enter to activate this console.
kmodloader: no module folders for kernel version 5.4.65 found
urngd: v1.0.2 started.
random: crng init done
random: 2 urandom warning(s) missed due to ratelimiting

BusyBox v1.31.1 () built-in shell (ash)

| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -| || | | || || |
|_____|| |||||___||| |____|
|| W I R E L E S S F R E E D O M

OpenWrt SNAPSHOT, r14533-90a50020b0

=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.

root@OpenWrt:/#

*** here is the same RB-411 device on last openwrt ar71xx (R.I.P.) target

Linux version 4.14.193 (alex@aifnis) (gcc version 9.3.0 (OpenWrt GCC 9.3.0 r14242-fd7954c3f3)) #0 Thu Aug 20 06:59:05 2020
bootconsole [early0] enabled
CPU0 revision is: 00019374 (MIPS 24Kc)
SoC: Atheros AR7130 rev 2
Determined physical RAM map:
memory: 02000000 @ 00000000 (usable)
User-defined physical RAM map:
memory: 02000000 @ 00000000 (usable)
Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes
Zone ranges:
Normal [mem 0x0000000000000000-0x0000000001ffffff]
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000000000-0x0000000001ffffff]
Initmem setup node 0 [mem 0x0000000000000000-0x0000000001ffffff]
On node 0 totalpages: 8192
free_area_init_node: node 0, pgdat 8044d7d0, node_mem_map 81000020
Normal zone: 64 pages used for memmap
Normal zone: 0 pages reserved
Normal zone: 8192 pages, LIFO batch:0
pcpu-alloc: s0 r0 d32768 u32768 alloc=132768
pcpu-alloc: [0] 0
Built 1 zonelists, mobility grouping on. Total pages: 8128
Kernel command line: parts=1 boot_part_size=4194304 gpio=1983 HZ=150000000 mem=32M kmac=00:0C:42:35:50:8B board=411 ver=3.18 boot=1 mlc=6 console=ttyS0,115200 rootfstype=squashfs noinitrd
PID hash table entries: 128 (order: -3, 512 bytes)
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Writing ErrCtl register=00000000
Readback ErrCtl register=00000000
Memory: 27636K/32768K available (3431K kernel code, 149K rwdata, 444K rodata, 192K init, 195K bss, 5132K reserved, 0K cma-reserved)
NR_IRQS: 51
Clocks: CPU:300.000MHz, DDR:300.000MHz, AHB:150.000MHz, Ref:40.000MHz
clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 12741736309 ns
sched_clock: 32 bits at 150MHz, resolution 6ns, wraps every 14316557820ns
Calibrating delay loop... 199.06 BogoMIPS (lpj=995328)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
random: get_random_u32 called from 0x8022473c with crng_init=0
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
futex hash table entries: 256 (order: -1, 3072 bytes)
NET: Registered protocol family 16
MIPS: machine is MikroTik RouterBOARD 411/A/AH
registering PCI controller with io_map_base unset
rb4xx-spi rb4xx-spi: controller is unqueued, this is deprecated
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [mem 0x10000000-0x16ffffff]
pci_bus 0000:00: root bus resource [io 0x0000]
pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
pci 0000:00:12.0: [168c:0029] type 00 class 0x028000
pci 0000:00:12.0: reg 0x10: [mem 0x00000000-0x0000ffff]
pci 0000:00:12.0: PME# supported from D0 D3hot
pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
pci 0000:00:12.0: BAR 0: assigned [mem 0x10000000-0x1000ffff]
clocksource: Switched to clocksource MIPS
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
PCI: CLS 0 bytes, default 32
workingset: timestamp_bits=30 max_order=13 bucket_order=0
squashfs: version 4.0 (2009/01/31) Phillip Lougher
jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler deadline registered (default)
Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
console [ttyS0] disabled
serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11, base_baud = 9375000) is a 16550A
console [ttyS0] enabled
bootconsole [early0] disabled
NAND flash driver for RouterBoard 4xx series version 0.2.0
nand: device found, Manufacturer ID: 0xad, Chip ID: 0x76
nand: Hynix NAND 64MiB 3,3V 8-bit
nand: 64 MiB, SLC, erase size: 16 KiB, page size: 512, OOB size: 16
Scanning device for bad blocks
Creating 3 MTD partitions on "NAND 64MiB 3,3V 8-bit":
0x000000000000-0x000000040000 : "booter"
0x000000040000-0x000000400000 : "kernel"
0x000000400000-0x000004000000 : "ubi"
libphy: ag71xx_mdio: probed
ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00 [uid=00221512, driver=Generic PHY]
eth0: Atheros AG71xx at 0xb9000000, irq 4, mode: mii
NET: Registered protocol family 17
8021q: 802.1Q VLAN Support v1.8
UBI: auto-attach mtd2
ubi0: attaching mtd2
random: fast init done
ubi0: scanning is finished
ubi0: attached mtd2 (name "ubi", size 60 MiB)
ubi0: PEB size: 16384 bytes (16 KiB), LEB size: 15360 bytes
ubi0: min./max. I/O unit sizes: 512/512, sub-page size 512
ubi0: VID header offset: 512 (aligned 512), data offset: 1024
ubi0: good PEBs: 3840, bad PEBs: 0, corrupted PEBs: 0
ubi0: user volume: 3, internal volumes: 1, max. volumes count: 89
ubi0: max/mean erase counter: 1/0, WL threshold: 4096, image sequence number: 573606007
ubi0: available PEBs: 0, total reserved PEBs: 3840, PEBs reserved for bad PEB handling: 80
block ubiblock0_1: created from ubi0:1(rootfs)
ubiblock: device ubiblock0_1 (rootfs) set to be root filesystem
ubi0: background thread "ubi_bgt0d" started, PID 190
VFS: Mounted root (squashfs filesystem) readonly on device 254:0.
Freeing unused kernel memory: 192K
This architecture does not have kernel memory protection.
init: Console is alive
init: - watchdog -
kmodloader: no module folders for kernel version 4.14.193 found
init: - preinit -
ar71xx: pll_reg 0xb8050010: 0x1099
eth0: link up (100Mbps/Full duplex)
random: procd: uninitialized urandom read (4 bytes read)
UBIFS (ubi0:2): background thread "ubifs_bgt0_2" started, PID 239
UBIFS (ubi0:2): recovery needed
UBIFS (ubi0:2): recovery completed
UBIFS (ubi0:2): UBIFS: mounted UBI device 0, volume 2, name "rootfs_data"
UBIFS (ubi0:2): LEB size: 15360 bytes (15 KiB), min./max. I/O unit sizes: 512 bytes/512 bytes
UBIFS (ubi0:2): FS size: 54528000 bytes (52 MiB, 3550 LEBs), journal size 2734080 bytes (2 MiB, 178 LEBs)
UBIFS (ubi0:2): reserved for root: 2575492 bytes (2515 KiB)
UBIFS (ubi0:2): media format: w5/r0 (latest is w5/r0), UUID 17E04CC7-672F-4DD2-AD21-8CA1B90E0D8A, big LPT model
mount_root: switching to ubifs overlay
urandom-seed: Seeding with /etc/urandom.seed
eth0: link down
procd: - early -
procd: - watchdog -
procd: - watchdog -
procd: - ubus -
random: ubusd: uninitialized urandom read (4 bytes read)
random: ubusd: uninitialized urandom read (4 bytes read)
random: ubusd: uninitialized urandom read (4 bytes read)
procd: - init -
kmodloader: loading kernel modules from /etc/modules.d/
Loading modules backported from Linux version v5.8-0-gbcf876870b95
Backport generated by backports.git v5.8-1-0-g79400d9e
urngd: v1.0.2 started.
random: crng init done
random: 6 urandom warning(s) missed due to ratelimiting
pci 0000:00:12.0: using irq 40 for pin 1
PCI: Enabling device 0000:00:12.0 (0000 -> 0002)
ath: EEPROM regdomain sanitized
ath: EEPROM regdomain: 0x64
ath: EEPROM indicates we should expect a direct regpair map
ath: Country alpha2 being used: 00
ath: Regpair used: 0x64
ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy0: Atheros AR9280 Rev:2 mem=0xb0000000, irq=40
kmodloader: done loading kernel modules from /etc/modules.d/*
ath: EEPROM regdomain: 0x812c
ath: EEPROM indicates we should expect a country code
ath: doing EEPROM country->regdmn map search
ath: country maps to regdmn code: 0x37
ath: Country alpha2 being used: GR
ath: Regpair used: 0x37
ath: regdomain 0x812c dynamically updated by user
ar71xx: pll_reg 0xb8050010: 0x1099
eth0: link up (100Mbps/Full duplex)