Index: sys/compat/linux/linux_event.c
===================================================================
--- sys/compat/linux/linux_event.c
+++ sys/compat/linux/linux_event.c
@@ -49,6 +49,7 @@
 #include <sys/poll.h>
 #include <sys/proc.h>
 #include <sys/selinfo.h>
+#include <sys/vnode.h>
 #include <sys/sx.h>
 #include <sys/syscallsubr.h>
 #include <sys/timespec.h>
@@ -443,6 +444,27 @@
 	return (0);
 }
 
+static bool
+linux_fd_is_epollable(struct thread *td, int fd)
+{
+	struct file *fp;
+	int error;
+	bool epollable;
+
+	error = fget(td, fd, &cap_no_rights, &fp);
+	if (error != 0)
+		return (true);
+
+	if (fp->f_type == DTYPE_VNODE &&
+	    (fp->f_vnode->v_type == VREG || fp->f_vnode->v_type == VDIR))
+		epollable = false;
+	else
+		epollable = true;
+	fdrop(fp, td);
+
+	return (epollable);
+}
+
 /*
  * Load epoll filter, convert it to kevent filter
  * and load it into kevent subsystem.
@@ -505,6 +527,10 @@
 	case LINUX_EPOLL_CTL_ADD:
 		if (epoll_fd_registered(td, epfp, args->fd)) {
 			error = EEXIST;
+			goto leave0;
+		}
+		if (!linux_fd_is_epollable(td, args->fd)) {
+			error = EPERM;
 			goto leave0;
 		}
 		break;