[ubuntu-2404] Hot adding filesystems to a VM crashes libvirt

[mvollmer]

Upstream: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2138902

Traceback (most recent call last):
  File "/work/make-checkout-workdir/test/check-machines-filesystems", line 30, in testBasicSessionConnection
    self._testBasic("session")
    ~~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/check-machines-filesystems", line 125, in _testBasic
    b.wait_not_present("#vm-subVmTest1-filesystems-modal-add")
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 871, in wait_not_present
    self.wait_js_func('!ph_is_present', selector)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 862, in wait_js_func
    self.wait_js_cond("%s(%s)" % (func, ','.join(map(jsquote, args))))
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 859, in wait_js_cond
    raise Error(f"timeout\nwait_js_cond({cond}): {last_error.msg}") from None
testlib.Error: timeout
wait_js_cond(!ph_is_present("#vm-subVmTest1-filesystems-modal-add")): Error: condition did not become true

Wrote screenshot to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2201-FAIL.png
Wrote HTML dump to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2201-FAIL.html
Wrote JS log to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2201-FAIL.js.log
Journal extracted to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2201-FAIL.log.gz
Process 8862 (libvirtd) of user 1000 terminated abnormally without generating a coredump.
Wrote JS log to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2201-FAIL.js.log
Journal extracted to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2201-FAIL.log.gz

[cockpituous]

ubuntu-2404
Ooops, it happened again

---

Wrote HTML dump to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.html
Wrote JS log to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.js.log
Journal extracted to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.log.gz
Process 6522 (libvirtd) of user 1000 terminated abnormally without generating a coredump.
Wrote JS log to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.js.log
Journal extracted to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.log.gz
> warn: transport closed: disconnected
Stopping 'libvirtd.service', but its triggering units are still active:
libvirtd.socket, libvirtd-admin.socket, libvirtd-ro.socket
Traceback (most recent call last):
  File "/work/make-checkout-workdir/test/check-machines-filesystems", line 30, in testBasicSessionConnection
    self._testBasic("session")
    ~~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/check-machines-filesystems", line 125, in _testBasic
    b.wait_not_present("#vm-subVmTest1-filesystems-modal-add")
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 870, in wait_not_present
    self.wait_js_func('!ph_is_present', selector)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 861, in wait_js_func
    self.wait_js_cond("%s(%s)" % (func, ','.join(map(jsquote, args))))
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 858, in wait_js_cond
    raise Error(f"timeout\nwait_js_cond({cond}): {last_error.msg}") from None
testlib.Error: timeout
wait_js_cond(!ph_is_present("#vm-subVmTest1-filesystems-modal-add")): Error: condition did not become true

# Result testBasicSessionConnection (__main__.TestMachinesFilesystems.testBasicSessionConnection) failed
# 1 TEST FAILED [46s on ad0356da6818]
not ok 104 /work/make-checkout-workdir/test/check-machines-filesystems TestMachinesFilesystems.testBasicSessionConnection [ND@1]

First occurrence: 2026-01-22T12:46:09.534172+00:00 | revision 09c65b0f971500ef9774c68d14a0cef44930c9bc
Times recorded: 1
Latest occurrences:

• 2026-01-22T12:46:09.534172+00:00 | revision 09c65b0f971500ef9774c68d14a0cef44930c9bc

---

Wrote HTML dump to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.html
Wrote JS log to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.js.log
Journal extracted to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.log.gz
Process 6530 (libvirtd) of user 1000 terminated abnormally without generating a coredump.
Wrote JS log to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.js.log
Journal extracted to TestMachinesFilesystems-testBasicSessionConnection-ubuntu-2404-127.0.0.2-2301-FAIL.log.gz
> warn: transport closed: disconnected
Stopping 'libvirtd.service', but its triggering units are still active:
libvirtd-ro.socket, libvirtd.socket, libvirtd-admin.socket
Traceback (most recent call last):
  File "/work/make-checkout-workdir/test/check-machines-filesystems", line 30, in testBasicSessionConnection
    self._testBasic("session")
    ~~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/check-machines-filesystems", line 125, in _testBasic
    b.wait_not_present("#vm-subVmTest1-filesystems-modal-add")
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 870, in wait_not_present
    self.wait_js_func('!ph_is_present', selector)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 861, in wait_js_func
    self.wait_js_cond("%s(%s)" % (func, ','.join(map(jsquote, args))))
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/work/make-checkout-workdir/test/common/testlib.py", line 858, in wait_js_cond
    raise Error(f"timeout\nwait_js_cond({cond}): {last_error.msg}") from None
testlib.Error: timeout
wait_js_cond(!ph_is_present("#vm-subVmTest1-filesystems-modal-add")): Error: condition did not become true

# Result testBasicSessionConnection (__main__.TestMachinesFilesystems.testBasicSessionConnection) failed
# 1 TEST FAILED [45s on 1f529027a0c1]
not ok 104 /work/make-checkout-workdir/test/check-machines-filesystems TestMachinesFilesystems.testBasicSessionConnection [ND@1]

First occurrence: 2026-01-23T07:22:13.230090+00:00 | revision b0608265e5b24d01b7ceab42971426e6ba63cb50
Times recorded: 1
Latest occurrences:

• 2026-01-23T07:22:13.230090+00:00 | revision b0608265e5b24d01b7ceab42971426e6ba63cb50