Description of problem:
After configuring nfs server on the machine with new kernel, client machine 
couldn't mount the nfs fs exported from the server.

Version-Release number of selected component (if applicable):
I tested 2.6.18-1.2768 and 2798. Both failed on IA64. I didn't try it on other 
platform, but it looks like the problem is arch-independent.

How reproducible:
Always on ia64 machine.

Steps to Reproduce:
1. Install the latest kernel/distribution;
2. On server machine: start nfs and exportfs /mnt/tmp;
3. On client, try to mount the nfs. Failed;
4. I tried kernel 2.6.18-rc7. It works well.
  
Actual results:


Expected results:


Additional info: