1 files changed, 7 insertions, 0 deletions

diff --git a/sys/kern/sys_generic.c b/sys/kern/sys_generic.c
index 0e8e173654c5c..300c80930ca53 100644
--- a/sys/kern/sys_generic.c
+++ b/sys/kern/sys_generic.c
@@ -1339,6 +1339,13 @@ kern_poll(struct thread *td, struct pollfd *ufds, u_int nfds,
 	} else
 		sbt = -1;
 
+	/*
+	 * This is kinda bogus.  We have fd limits, but that is not
+	 * really related to the size of the pollfd array.  Make sure
+	 * we let the process use at least FD_SETSIZE entries and at
+	 * least enough for the system-wide limits.  We want to be reasonably
+	 * safe, but not overly restrictive.
+	 */
 	if (nfds > maxfilesperproc && nfds > FD_SETSIZE) 
 		return (EINVAL);
 	if (nfds > nitems(stackfds))