Error while trying to boot kernel

[Nikolay Borisov <n.borisov.lkml@xxxxxxxxx>]

Hello,

I'm trying to boot a custom kernel which is based off rhel9, the environment is a bit crazy.
I'm booting it inside qemu but I use ubuntu to create the initrd, as can be seen from the
attached log everything works up until switch root has to happen and then I get a
SIGTERM and booting dies. Kernel command line is:

systemd.log_level=debug systemd.log_target=console root=/dev/mapper/vhs-root rd.lvm.lv=vhs/root console=ttyS0

Systemd in initrd is:
systemd 249 (249.11-0ubuntu3.6)
+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT +GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 -PWQUALITY -P11KIT -QRENCODE +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified



initrd-switch-root.service: AssertPathExists=/etc/initrd-release succeeded.
Failed to read pids.max attribute of cgroup root, ignoring: No data available
initrd-switch-root.service: Passing 0 fds to service
initrd-switch-root.service: About to execute systemctl --no-block switch-root /sysroot
initrd-switch-root.service: Forked systemctl as 517
initrd-switch-root.service: Changed dead -> start
         Starting Switch Root...
Got cgroup empty notification for: /system.slice/initrd-udevadm-cleanup-db.service
initrd-switch-root.service: Executing: systemctl --no-block switch-root /sysroot
systemd-journald.service: Got notification message from PID 161 (FDSTORE=1)
systemd-journald.service: Added fd 11 (n/a) to fd store.
Bus private-bus-connection: changing state UNSET → OPENING
sd-bus: starting bus private-bus-connection on fds 15/15 (socket:[16383], socket:[16383])...
Bus private-bus-connection: changing state OPENING → AUTHENTICATING
Registering bus object implementation for path=/org/freedesktop/systemd1 iface=org.freedesktop.systemd1.Manager
Registering bus object implementation for path=/org/freedesktop/systemd1/job iface=org.freedesktop.systemd1.Job
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Unit
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Automount
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Device
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Mount
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Path
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Scope
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Service
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Slice
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Socket
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Swap
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Target
Registering bus object implementation for path=/org/freedesktop/systemd1/unit iface=org.freedesktop.systemd1.Timer
Registering bus object implementation for path=/org/freedesktop/LogControl1 iface=org.freedesktop.LogControl1
Accepted new private connection.
Bus private-bus-connection: changing state AUTHENTICATING → RUNNING
Got message type=method_call sender=n/a destination=org.freedesktop.systemd1 path=/org/freedesktop/systemd1 interface=org.freedesktop.systemd1.Manager member=SwitchRoot cookie=1 reply_cookie=0 signature=ss error-name=n/a error-message=n/a
Sent message type=method_return sender=org.freedesktop.systemd1 destination=n/a path=n/a interface=n/a member=n/a cookie=1 reply_cookie=1 signature=n/a error-name=n/a error-message=n/a
Serializing systemd-state to memfd.
Bus private-bus-connection: changing state RUNNING → CLOSING
Failed to send reloading signal: Connection reset by peer
-.mount: not serializing before switch-root
tmp.mount: not serializing before switch-root
sysroot.mount: not serializing before switch-root
sys-fs-fuse-connections.mount: not serializing before switch-root
Switching root.
systemd-journald.service: Releasing resources.
systemd-journald.service: Releasing all stored fds
Bus private-bus-connection: changing state CLOSING → CLOSED
[    9.047894] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00
[    9.048468] CPU: 2 PID: 1 Comm: systemd ve: / Not tainted 5.14.0-70.22.1.ovz9.17.8-default #9 ovz9.17.8
[    9.049149] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
[    9.049905] Call Trace:
[    9.050146]  dump_stack_lvl+0x45/0x59
[    9.050412]  panic+0x10f/0x2c4
[    9.050653]  do_exit.cold+0x67/0xad
[    9.051256]  do_group_exit+0x39/0xb0
[    9.051513]  __x64_sys_exit_group+0x14/0x20
[    9.051812]  do_syscall_64+0x35/0x80
[    9.052067]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[    9.052428] RIP: 0033:0x7fd50f880001
[    9.053997] RSP: 002b:00007fffb6c1b9d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    9.054529] RAX: ffffffffffffffda RBX: 00007fd50f87ac10 RCX: 00007fd50f880001
[    9.055028] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 000000000000007f
[    9.055532] RBP: 000055afa9787040 R08: 00007fffb6c1b549 R09: 0000000000000000
[    9.056035] R10: 00000000ffffffff R11: 0000000000000246 R12: 000000000000000d
[    9.056535] R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
[    9.057197] Kernel Offset: 0x2b000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[    9.057963] Rebooting in 90 seconds..