NFS panics kernel in FC5

adsb · #1 4th April 2006, 05:44 PM

If one attempts to mount a directory from an FC5 NFS server using certain NFS
parameters, then the kernel panics.

For example, configuring the automounter on a Solaris 8 sparc machine to mount
my home directory (on an FC5 i386 machine) with the NFS parameters:

-vers=2,proto=udp,rsize=4096,wsize=4096

then the FC5 box panics its kernel.

I think we needed these parameters for an earlier version of Fedora.

If one removes the NFS parameters, the FC5 box is OK. But life is now interesting
because one has to remember which servers have been updated - if you pick one
that hasn't been, it's reboot time on the FC5 box.

adsb · #2 11th April 2006, 10:56 AM

Ah, not just FC5. It's a 2.6.16 kernel thing (if you upgrade FC4 to 2.6.16, you get the problem too).

jeffmacdonald7 · #3 8th March 2007, 01:12 PM

this effects redhat es4 update 4 as well.
certainly 64bit smp kernels 2.6.9.30 through
.42

https://bugzilla.redhat.com/bugzilla....cgi?id=191831

the thing that trips it is solaris cients using nfsv2.
as far as i can tell if you successfully
disable nfsv2 on the server it wont crash
no more.