diff --git a/share/man/man9/pmap_kextract.9 b/share/man/man9/pmap_kextract.9
index 40008a1bc96c..a93bbc70b351 100644
--- a/share/man/man9/pmap_kextract.9
+++ b/share/man/man9/pmap_kextract.9
@@ -1,65 +1,77 @@
 .\"
 .\" SPDX-License-Identifier: BSD-2-Clause
 .\"
 .\" Copyright (c) 2023 The FreeBSD Foundation
 .\"
 .\" This manual page was written by Mina Galić <FreeBSD@igalic.co> under
 .\" sponsorship from the FreeBSD Foundation.
 .\"
 .Dd October 16, 2023
 .Dt PMAP_KEXTRACT 9
 .Os
 .Sh NAME
 .Nm pmap_kextract ,
 .Nm vtophys
 .Nd extract a physical address from the kernel page table
 .Sh SYNOPSIS
 .In sys/param.h
 .In vm/vm.h
 .In vm/pmap.h
 .Ft vm_paddr_t
 .Fo pmap_kextract
 .Fa "vm_offset_t va"
 .Fc
 .Ft vm_paddr_t
 .Fo vtophys
 .Fa "vm_offset_t va"
 .Fc
 .Sh DESCRIPTION
 The
 .Fn pmap_kextract
 function retrieves the underlying physical memory address corresponding to the
 given kernel virtual address
 .Fa va .
-The value of
+The caller is responsible for ensuring that
 .Fa va
-must belong to a valid mapping in the kernel address space.
+belongs to a valid mapping in the kernel address space.
+The returned physical address is only meaningful as long as the mapping remains
+stable, so the caller must also have some knowledge or guarantee of the
+mapping's lifetime.
+For example, it is invalid to call
+.Fn pmap_kextract
+with the address of a malloc'd object while there is a possibility for that
+object to be freed concurrently.
+.Pp
+Unlike
+.Xr pmap_extract 9 ,
+.Fn pmap_kextract
+is safe to be called from any context; it has no internal locking or sleep.
 .Pp
 .Fn vtophys
 is an alias for
 .Fn pmap_kextract
 and behaves identically.
 .Sh RETURN VALUES
 The
 .Fn pmap_kextract
-function returns the address of physical memory mapped at the kernel
+function returns the physical address of memory mapped at the kernel
 virtual address
 .Fa va .
 .Pp
 .Fn pmap_kextract
 generally does not fail.
 However, if supplied with an illegitimate value for
 .Fa va ,
 the function may return zero, an invalid non-zero value, or call
 .Xr panic 9 .
 .Sh SEE ALSO
 .Xr pmap 9 ,
 .Xr pmap_extract 9
 .Sh AUTHORS
 .An -nosplit
 This manual page was written by
 .An Mina Galić Aq Mt FreeBSD@igalic.co ,
 based on the
 .Xr pmap_extract 9
 page written by
 .An Bruce M Simpson Aq Mt bms@spc.org .