The branch main has been updated by markj:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=e1979b45b63725972d394562f95d89f8cc9a0bb4

commit e1979b45b63725972d394562f95d89f8cc9a0bb4
Author:     Mark Johnston <[email protected]>
AuthorDate: 2022-07-12 12:53:05 +0000
Commit:     Mark Johnston <[email protected]>
CommitDate: 2022-07-12 13:10:15 +0000

    vm_object: Assert that overcommit charge is released in the object dtor
    
    Reviewed by:    alc, kib
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D35780
---
 sys/vm/vm_object.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
index efd646cf52e0..4272a734b233 100644
--- a/sys/vm/vm_object.c
+++ b/sys/vm/vm_object.c
@@ -204,6 +204,9 @@ vm_object_zdtor(void *mem, int size, void *arg)
        KASSERT(object->type == OBJT_DEAD,
            ("object %p has non-dead type %d",
            object, object->type));
+       KASSERT(object->charge == 0 && object->cred == NULL,
+           ("object %p has non-zero charge %ju (%p)",
+           object, (uintmax_t)object->charge, object->cred));
 }
 #endif
 

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