When building kernel driver for Ubuntu 9.04 AMD64, build fails, with error coming from depmod

[kpnolan]

[38263.429229] warning: `VirtualBox' uses 32-bit capabilities (legacy support in use)
[38344.761285] depmod[5372]: segfault at 7f44d3215e20 ip 00007f44c37386a0 sp 00007fffcbc4a058 error 4 in libc-2.9.so[7f44c36b8000+168000]
[38347.763121] depmod[5380]: segfault at 7f286e07ee20 ip 00007f285e5a16a0 sp 00007fff66ab0ec8 error 4 in libc-2.9.so[7f285e521000+168000]
[38363.656955] depmod[6277]: segfault at 7f4ba958ce20 ip 00007f4b99aaf6a0 sp 00007fffa1fc13c8 error 4 in libc-2.9.so[7f4b99a2f000+168000]
[38366.663823] depmod[6283]: segfault at 7fa80ce91e20 ip 00007fa7fd3b46a0 sp 00007fff058c5cd8 error 4 in libc-2.9.so[7fa7fd334000+168000]

cat /proc/version
Linux version 2.6.28-11-generic (buildd@crested) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC 2009

[Frank Mehnert]

I've no idea what could be wrong with your setup. Compiling and loading the modules works perfectly here on Jaunty / AMD64:

cat /proc/version
Linux version 2.6.28-12-generic (buildd@crested) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #43-Ubuntu SMP Fri May 1 19:31:32 UTC 2009

Are you executing this Ubuntu in some unusual environment, for instance inside Xen or another virtualizer?