git: b06d6b9ebbc6 - stable/15 - kqueue_fork_copy_knote(): zero kn_knlist for the copy before calling knlist_add()

The branch stable/15 has been updated by kevans:

URL: https://cgit.FreeBSD.org/src/commit/?id=b06d6b9ebbc6d2681cecc15bd6c1ece6a816ef73

commit b06d6b9ebbc6d2681cecc15bd6c1ece6a816ef73
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2026-04-02 11:02:14 +0000
Commit:     Kyle Evans <kevans@FreeBSD.org>
CommitDate: 2026-04-13 17:39:41 +0000

    kqueue_fork_copy_knote(): zero kn_knlist for the copy before calling knlist_add()
    
    Reported by:    pho, dhw
    Sponsored by:   The FreeBSD Foundation
    
    (cherry picked from commit aab1ef4527f1b0935add3e8dba9e928e0623376f)
---
 sys/kern/kern_event.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/kern/kern_event.c b/sys/kern/kern_event.c
index 4db5c6669470..01731ca46b6b 100644
--- a/sys/kern/kern_event.c
+++ b/sys/kern/kern_event.c
@@ -3092,6 +3092,7 @@ kqueue_fork_copy_knote(struct kqueue *kq1, struct knote *kn, struct proc *p1,
 	kn1->kn_status |= KN_DETACHED;
 	kn1->kn_status &= ~KN_QUEUED;
 	kn1->kn_kq = kq1;
+	kn1->kn_knlist = NULL;
 	error = fop->f_copy(kn1, p1);
 	if (error != 0) {
 		knote_free(kn1);