vgextend segfault - additional info

Extension on my previous question
a vgdisplay -v testl shows:
--------------------------------

# vgdisplay -v testl
--- Volume group ---
VG Name               testl
VG Access             read/write
VG Status             available/resizable
VG #                  0
MAX LV                10
Cur LV                0
Open LV               0
MAX LV Size           255.99 GB
Max PV                20
Cur PV                2
Act PV                2
VG Size               1.53 GB
PE Size               4 MB
Total PE              392
Alloc PE / Size       0 / 0
Free  PE / Size       392 / 1.53 GB
VG UUID               g5vEgW-vKih-aG64-IcxB-8TeD-kC9U-IInEVt

--- No logical volumes defined in "testl" ---

--- Physical volumes ---

PV Name (#)           /dev/sdb1 (1)
PV Status             available / allocatable
Total PE / Free PE    392 / 392

PV Name (#)           /dev/sdb2 (2)
PV Status             available / allocatable
Total PE / Free PE    392 / 392

---------------------------
and echo $? gives errorcode 139 back
Is the kernel part unable updating the vg ???
TIA
wim bakker
ComNed Netwerken BV
31 20 4350025