It's a bit easier to investigate with

    /usr/libexec/udisks2/udisksd --debug --force-load-modules

There I've1 also seen it fail on the btrfs module, so it's not specific
to the LVM one.

It also happens with rebuilding the udisks source package (so not just
changed ABI)

I tried building upstream git, but it fails due to some missing API,
like

udiskslinuxmodulelvm2.c:438:29: error: implicit declaration of function
'udisks_logical_volume_get_uuid' [-Werror=implicit-function-declaration]

presumably libblockdev or some other build dep which moved along?

Anyway, this doesn't happen on Debian, and it's certainly not related to
the current Ubuntu delta. So something in the stack must be different.
glib2.0 would be the obvious candidate, but both Debian sid and Ubuntu
noble have 2.78.1-4.

For investigating it is helpful to load the modules from the source
tree:

--- src/udisksmodulemanager.c.orig      2023-12-04 10:20:54.571542454 +0000
+++ src/udisksmodulemanager.c   2023-12-04 10:21:01.047569622 +0000
@@ -637,7 +637,7 @@
 udisks_module_manager_new (UDisksDaemon *daemon)
 {
   return UDISKS_MODULE_MANAGER (g_object_new (UDISKS_TYPE_MODULE_MANAGER,
-                                              "daemon", daemon, NULL));
+                                              "daemon", daemon, "uninstalled", 
TRUE, NULL));
 }
 
 /**


and then 

  sudo ./src/udisksd --debug --force-load-modules

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to udisks2 in Ubuntu.
https://bugs.launchpad.net/bugs/2040488

Title:
  loading lvm2 module crashes: udisks_module_lvm2_new: assertion
  'UDISKS_IS_DAEMON (daemon)' failed

Status in udisks2 package in Ubuntu:
  New
Status in udisks2 source package in Mantic:
  New

Bug description:
  I tried to do this with `apport-cli
  /var/crash/_usr_libexec_udisks2_udisksd.0.crash`, but 's'ending
  doesn't do anything obvious. I run this from a cloud image over ssh, I
  really don't have any GUI. So filing this manually.

  Trying to load the lvm2 module crashes udisks immediately:

     busctl call org.freedesktop.UDisks2
  /org/freedesktop/UDisks2/Manager org.freedesktop.UDisks2.Manager
  EnableModule sb lvm2 true

  
  udisksd[5709]: cannot register existing type 'UDisksDaemon'
  udisksd[5709]: g_once_init_leave: assertion 'result != 0' failed
  udisksd[5709]: udisks_module_lvm2_new: assertion 'UDISKS_IS_DAEMON (daemon)' 
failed
  systemd[1]: Started systemd-coredump@2-5767-0.service - Process Core Dump 
(PID 5767/UID 0).

                                                Module libudev.so.1 from deb 
systemd-253.5-1ubuntu6.amd64
                                                 Module libsystemd.so.0 from 
deb systemd-253.5-1ubuntu6.amd64
                                                 Stack trace of thread 5709:
                                                 #0  0x000056079be701ad 
udisks_module_manager_load_modules (udisksd + 0x601ad)
                                                 #1  0x000056079be5fdf5 n/a 
(udisksd + 0x4fdf5)
                                                 #2  0x00007f7d5f122a11 n/a 
(libglib-2.0.so.0 + 0x5aa11)
                                                 #3  0x00007f7d5f17e46f n/a 
(libglib-2.0.so.0 + 0xb646f)
                                                 #4  0x00007f7d5f12346f 
g_main_loop_run (libglib-2.0.so.0 + 0x5b46f)
                                                 #5  0x000056079be323d2 main 
(udisksd + 0x223d2)
                                                 #6  0x00007f7d5ee280d0 
__libc_start_call_main (libc.so.6 + 0x280d0)
                                                 #7  0x00007f7d5ee28189 
__libc_start_main_impl (libc.so.6 + 0x28189)
                                                 #8  0x000056079be324f5 _start 
(udisksd + 0x224f5)

  ProblemType: Crash
  Architecture: amd64
  Date: Wed Oct 25 12:13:14 2023
  DistroRelease: Ubuntu 23.10
  ExecutablePath: /usr/libexec/udisks2/udisksd
  Package: udisks2 2.10.1-1ubuntu1

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