NFSD calls filesystem's ->d_revalidate() with the parameter nd == NULL. So every if (nd->flags & LOOKUP_RCU) return -ECHILD; code which was added to ->d_revalidate() of FS which supports NFS exporting will crash. If we rewrite it as if (nd && (nd->flags & LOOKUP_RCU)) return -ECHILD; the problem may not occur. But I am not sure whether lookup_one_len() call in NFSD support rcu-walk. J. R. Okajima -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
