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crazy: kernel console is lost for around 10 seconds

[    0.138824] sctp: Hash tables configured (bind 256/256)
[    0.138939] Key type dns_resolver registered
[    0.144779] registered taskstats version 1
[    0.144858] Loading compiled-in X.509 certificates
[    0.149457] alg: No test for xilinx-zynqmp-rsa (zynqmp-rsa)
[    0.555185] ff000000.serial: ttyPS0 at MMIO 0xff000000 (irq = 24, base_baud = 6250000) is a xuartps
[    0.555224] printk: console [ttyPS0] enabled
[    1.519122] of-fpga-region fpga-region: FPGA Region probed
[    1.530292] spi-nor spi0.0: found n25q00a, expected n25q512a
[    1.536323] spi-nor spi0.0: n25q00a (131072 Kbytes)
[    1.541311] 1 fixed-partitions partitions found on MTD device spi0.0
[    1.547668] Creating 1 MTD partitions on "spi0.0":
[    1.552453] 0x000000000000-0x000080000000 : "boot"
[    1.557234] mtd: partition "boot" extends beyond the end of device "spi0.0" -- size truncated to 0x8000000
[    1.568272] xilinx-axipmon ffa00000.perf-monitor: Probed Xilinx APM
[    1.574816] xilinx-axipmon fd0b0000.perf-monitor: Probed Xilinx APM
[    1.581361] xilinx-axipmon fd490000.perf-monitor: Probed Xilinx APM
[    1.587855] xilinx-axipmon ffa10000.perf-monitor: Probed Xilinx APM
[    1.594282] cdns-i2c ff020000.i2c: can't get pinctrl, bus recovery not supported
[    1.602327] monimod 0-0012: PMBus status register not found
[    1.607957] monimod 0-0012: Failed to read Manufacturer MODEL
[    1.613938] hac300s 0-0018: error -ENXIO: Failed to read vout_mode
[    1.725736] cdns-i2c ff020000.i2c: 400 kHz mmio ff020000 irq 45
[    1.731814] cdns-i2c ff030000.i2c: can't get pinctrl, bus recovery not supported
[    1.739606] pca954x 1-0070: supply vdd not found, using dummy regulator
[    1.891896] i2c i2c-1: Added multiplexed i2c bus 2
[    1.896945] lm75 3-0048: supply vs not found, using dummy regulator
[    1.903591] lm75 3-0048: hwmon3: sensor 'lm75a'
[    1.908256] lm75 3-0049: supply vs not found, using dummy regulator
[    1.914838] lm75 3-0049: hwmon4: sensor 'lm75a'
[    1.919500] lm75 3-004a: supply vs not found, using dummy regulator
[    1.926058] lm75 3-004a: hwmon5: sensor 'lm75a'
[    1.930622] i2c i2c-1: Added multiplexed i2c bus 3
[    1.936632] si5341 4-0076: Chip: 5341 Grade: 1 Rev: 3
[    1.960262] i2c i2c-1: Added multiplexed i2c bus 4
[    1.965327] at24 5-0050: supply vcc not found, using dummy regulator
[    1.999683] i2c i2c-1: Added multiplexed i2c bus 5
[    2.006795] i2c i2c-1: Added multiplexed i2c bus 6
[    2.011849] at24 7-0055: supply vcc not found, using dummy regulator
[    2.018573] at24 7-0055: 256 byte 24c02 EEPROM, writable, 1 bytes/write
[    2.025277] i2c i2c-1: Added multiplexed i2c bus 7
[    2.030220] i2c i2c-1: Added multiplexed i2c bus 8
[    2.035149] i2c i2c-1: Added multiplexed i2c bus 9
[    2.039949] pca954x 1-0070: registered 8 multiplexe clock registered.
<--- PROBLEM --->
[   11.828975] haveged[220]: haveged: ver: 1.9.14; arch: generic; vend: ; build: (gcc 12.2.0 CTV); collect: 128K
[  OK  ] Started systemd-resolved.s…ice - Network Name Resolution.
[   11.844373] haveged[220]: haveged: cpu: (VC); data: 16K (D V); inst: 16K (D V); idx: 11/40; sz: 15456/64452
[  OK  ] Reached target network.target - Network.
[   11.876255] haveged[220]: haveged: tot tests(BA8): A:1/1 B:1/1 continuous tests(B):  last entropy estimate 7.99685
[  OK  ] Reached target nss-lookup.…m - Host and Network Name Lookups.
[   11.908340] haveged[220]: haveged: fills: 0, generated: 0
[  OK  ] Reached target sysinit.target - System Initialization.
[  OK  ] Started apt-daily.timer - Daily apt download activities.
[  OK  ] Started apt-daily-upgrade.… apt upgrade and clean activities.
[  OK  ] Started dpkg-db-backup.tim… Daily dpkg database backup timer.
[  OK  ] Started e2scrub_all.timeretadata Check for All Filesystems.
[  OK  ] Started fstrim.timer - Discard unused blocks once a week.
[  OK  ] Started logrotate.timer - Daily rotation of log files.
[  OK  ] Started sysstat-collect.ti… accounting tool every 10 minutes.
[  OK  ] Started sysstat-summary.ti…of yesterday's process accounting.
[  OK  ] Started systemd-tmpfiles-c… Cleanup of Temporary Directories.
[  OK  ] Reached target timers.target - Timer Units.
[  OK  ] Listening on dbus.socket- D-Bus System Message Bus Socket.
[  OK  ] Reached target sockets.target - Socket Units.
[  OK  ] Reached target basic.target - Basic System.
[  OK  ] Started bootcount-reset.se…ize the U-Boot bootcount variable.
         Starting collectd.serviceollection and monitoring daemon...
         Starting dbus.service - D-Bus System Message Bus...
         Starting e2scrub_reap.serv…e ext4 Metadata Check Snapshots...
         Starting lm-sensors.servic…ize hardware monitoring sensors...
         Starting rsyslog.service - System Logging Service...
         Starting snmpd.service…agement Protocol (SNMP) Daemon....
         Starting ssh.service - OpenBSD Secure Shell server...
         Starting sysstat.service - Resets System Activity Logs...
         Starting systemd-logind.se…ice - User Login Management...
         Starting systemd-user-sess…vice - Permit User Sessions...
[  OK  ] Finished systemd-user-sess…ervice - Permit User Sessions.
[  OK  ] Started getty@tty1.service - Getty on tty1.
[  OK  ] Started serial-getty@ttyPS…vice - Serial Getty on ttyPS0.
[  OK  ] Reached target getty.target - Login Prompts.
[  OK  ] Finished sysstat.service - Resets System Activity Logs.
[   13.683735] sensors[327]: max6639-i2c-6-2c
[   13.692611] sensors[327]: Adapter: i2c-1-mux (chan_id 4)
[   13.704526] sensors[327]: Temp FPGA:    +67.2°C  (high = +80.0°C, crit = +90.0°C)
[   13.720430] sensors[327]:                        (emerg = +100.0°C)