D58397.1794316395.diff
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	diff --git a/sys/kern/kern_event.c b/sys/kern/kern_event.c
	--- a/sys/kern/kern_event.c
	+++ b/sys/kern/kern_event.c
	@@ -454,6 +454,9 @@
	int error;
	bool exiting, immediate;

	+ if (IN_CAPABILITY_MODE(curthread))
	+ return (ECAPMODE);
	+
	exiting = immediate = false;
	if (kn->kn_sfflags & NOTE_EXIT)
	p = pfind_any(kn->kn_id);
	@@ -661,6 +664,9 @@
	{
	struct prison *pr;

	+ if (IN_CAPABILITY_MODE(curthread))
	+ return (ECAPMODE);
	+
	if (kn->kn_id == 0) {
	/* Let jid=0 watch the current prison (including prison0). */
	pr = curthread->td_ucred->cr_prison;
	diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
	--- a/sys/kern/vfs_subr.c
	+++ b/sys/kern/vfs_subr.c
	@@ -6563,6 +6563,8 @@
	static int
	filt_fsattach(struct knote *kn)
	{
	+ if (IN_CAPABILITY_MODE(curthread))
	+ return (ECAPMODE);

	kn->kn_flags \|= EV_CLEAR;
	knlist_add(&fs_knlist, kn, 0);