[OpenAFS] linux kernel options ?

[EC]

>>> now.
>>>
>>> Try to reboot the machine, do an insmod of the afs kernel module and
>>> start afsd by hand (just "afsd" in the shell).
>>> When that's working you can go after your script.
>>
>> [ECI] So there won't be any servers up.
>
>You can start your servers ... :-)
>
>OK, this time you haven't got that far. This is completely new.
>You said you have a P4 with exactly the same openafs working. And the
>two have self compiled kernels??
The PIII and PIV Linux are based on exactly the same Linux except for the
kernel. OpenAFS was then compiled separately on each of the machines, with
their local kernel.

Servers are launched, ok.
When launching afsd : 
...
doSweepAFSCache: Current directory entry:
        inode=260652, reclen=24, name='V9996'
doSweepAFSCache: Current directory entry:
        inode=260653, reclen=24, name='V9997'
doSweepAFSCache: Current directory entry:
        inode=260654, reclen=24, name='V9998'
doSweepAFSCache: Current directory entry:
        inode=260655, reclen=24, name='V9999'
doSweepAFSCache: Closing cache directory.
doSweepAFSCache: Closing cache directory.
afsd: 10000 out of 10000 data cache files found in sweep 1.
afsd: Calling AFSOP_CACHEINFO: dcache file is
'/var/openafs/cache/CacheItems'
Segmentation fault 

Ksymoops : 

Trace; d88cd03b <[libafs-2.4.28.4es]afs_DaemonOp+6b/e0>
Trace; d88ccf90 <[libafs-2.4.28.4es]afsd_launcher+0/40>
Trace; d88cdb99 <[libafs-2.4.28.4es]afs_syscall_call+ae9/b10>
Trace; c01a2412 <sock_def_readable+26/4c>
Trace; c01c441b <tcp_rcv_established+41f/7e0>
Trace; c01cb5d7 <tcp_v4_do_rcv+27/104>
Trace; c01cba3f <tcp_v4_rcv+38b/5dc>
Trace; c01b3946 <ip_local_deliver+b2/128>
Trace; c01b3ca1 <ip_rcv+2e5/344>
Trace; c01a64ed <netif_receive_skb+101/12c>
Trace; c01a6581 <process_backlog+69/10c>
Trace; c01a6694 <net_rx_action+70/114>
Trace; c0116a9a <do_softirq+5a/a4>
Trace; c01296f2 <__alloc_pages+6a/28c>
Trace; c0127f42 <lru_cache_add+5a/60>
Trace; c011f893 <do_wp_page+1af/1f0>
Trace; c011fe53 <handle_mm_fault+7b/b4>
Trace; c010f6e4 <do_page_fault+160/4a0>
Trace; d88cdddf <[libafs-2.4.28.4es]afs_syscall+1bf/210>
Trace; c011be20 <sys_setpriority+5c/d4>
Trace; c0106b27 <system_call+33/38> 

EC