From 6abb6c1c0d73aeb73c92085fbae99690537c46d8 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Tue, 23 Sep 2025 11:32:15 -0400
Subject: kern/amd64: proc: Deallocate mapped frames on exit

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/arch/amd64/os/os_proc.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/sys/arch/amd64/os/os_proc.c')

diff --git a/src/sys/arch/amd64/os/os_proc.c b/src/sys/arch/amd64/os/os_proc.c
index 8318476..d944f41 100644
--- a/src/sys/arch/amd64/os/os_proc.c
+++ b/src/sys/arch/amd64/os/os_proc.c
@@ -33,6 +33,7 @@
 #include <sys/cdefs.h>
 #include <vm/mmu.h>
 #include <vm/map.h>
+#include <vm/physseg.h>
 #include <machine/pcb.h>
 #include <machine/gdt.h>
 #include <machine/frame.h>
@@ -221,9 +222,11 @@ done:
 int
 md_proc_kill(struct proc *procp, int flags)
 {
+    const size_t PSIZE = DEFAULT_PAGESIZE;
     struct proc *self;
     struct pcore *core = this_core();
     struct md_pcb *pcbp;
+    struct vm_range *range;
 
     if (core == NULL) {
         return -ENXIO;
@@ -234,6 +237,15 @@ md_proc_kill(struct proc *procp, int flags)
         procp = core->curproc;
     }
 
+    /* Free every range */
+    TAILQ_FOREACH(range, &procp->maplist, link) {
+        if (range == NULL) {
+            continue;
+        }
+
+        vm_free_frame(range->pa_base, range->len / PSIZE);
+    }
+
     /* Release the VAS */
     pcbp = &procp->pcb;
     mmu_free_vas(&pcbp->vas);
-- 
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