[CentOS] centos5: NFS panic during unmount

Hello,

Just noticed a NFS panic on centos5 (no updates applied yet). I don't have the serial console attached yet to get the exact stack. However, here is the stack:

shrink_dcache_for_umount generic_shutdown_super kill_anon_super nfs_kill_super deactivate_super mntput_no_expire do_exit sys_exit_group sys_exit_group syscall_call . . . EIP: shrink_dcache_for_umount_subtree

[root@xx]# uname -a Linux xx 2.6.18-8.el5 #1 SMP Thu Mar 15 19:57:35 EDT 2007 i686 i686 i386 GNU/Linux

While I plan to install the latest update, has anyone seen this with centos5 and do you know which update fixes this ?.

Thanks for the help, - vnr