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-rw-r--r--kern/slab.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kern/slab.c b/kern/slab.c
index 7cb4ee27..ee51f9e9 100644
--- a/kern/slab.c
+++ b/kern/slab.c
@@ -416,6 +416,9 @@ kmem_pagealloc_virtual(vm_size_t size, vm_size_t align)
static void
kmem_pagefree_virtual(vm_offset_t addr, vm_size_t size)
{
+ if (addr < kernel_virtual_start || addr + size > kernel_virtual_end)
+ panic("kmem_pagefree_virtual(%lx-%lx) falls in physical memory area!\n",
+ (unsigned long) addr, (unsigned long) addr + size);
assert(size > PAGE_SIZE);
size = vm_page_round(size);
kmem_free(kernel_map, addr, size);