diff options
Diffstat (limited to 'kernel/vm.c')
| -rw-r--r-- | kernel/vm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/vm.c b/kernel/vm.c index 8036be7..c5da0c1 100644 --- a/kernel/vm.c +++ b/kernel/vm.c @@ -270,7 +270,8 @@ uvmdealloc(pagetable_t pagetable, uint64 oldsz, uint64 newsz) return oldsz; uint64 newup = PGROUNDUP(newsz); - uvmunmap(pagetable, newup, oldsz - newup, 1); + if(newup < PGROUNDUP(oldsz)) + uvmunmap(pagetable, newup, oldsz - newup, 1); return newsz; } |