Restart of wireless service creates crash in system

[Juris Kaminskis]

when i do this: kgdb /boot/kernel/kernel.symbols

list *0xc0751582:

0xc0751582 is in ncl_nget (/usr/src/sys/fs/nfsclient/nfs_clnode.c:118).
113    M_NFSFH, M_WAITOK);
114 bcopy(fhp, &nfhp->nfh_fh[0], fhsize);
115 nfhp->nfh_len = fhsize;
116 error = vfs_hash_get(mntp, hash, lkflags,
117    td, &nvp, newnfs_vncmpf, nfhp);
118 FREE(nfhp, M_NFSFH);
119 if (error)
120 return (error);
121 if (nvp != NULL) {
122 *npp = VTONFS(nvp);