From 711414223be0ca520940f9aa1d7e5de3a2a31e95 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jeremy@system76.com>
Date: Wed, 9 Sep 2020 11:11:39 -0600
Subject: [PATCH] Fix buddy map footer read address

---
 src/allocator/frame/buddy.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/allocator/frame/buddy.rs b/src/allocator/frame/buddy.rs
index 28ccec0695..a88110721b 100644
--- a/src/allocator/frame/buddy.rs
+++ b/src/allocator/frame/buddy.rs
@@ -163,7 +163,7 @@ impl<A: Arch> FrameAllocator for BuddyAllocator<A> {
                     offset += A::PAGE_SIZE * 8;
                 }
 
-                let footer = A::read::<BuddyMapFooter>(map_virt);
+                let footer = A::read::<BuddyMapFooter>(map_virt.add(Self::MAP_PAGE_BYTES));
                 map_phys = footer.next;
             }
         }
@@ -199,7 +199,7 @@ impl<A: Arch> FrameAllocator for BuddyAllocator<A> {
                             A::write(map_byte_virt, value);
                             break;
                         } else {
-                            let footer = A::read::<BuddyMapFooter>(map_virt);
+                            let footer = A::read::<BuddyMapFooter>(map_virt.add(Self::MAP_PAGE_BYTES));
                             map_phys = footer.next;
                             map_page -= 1;
                         }