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PMM: Log invalid frees

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apio 2022-10-20 18:49:12 +02:00
parent 073c90e948
commit 9d0dfbaedf
1 changed files with 6 additions and 1 deletions
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7
kernel/src/memory/PMM.cpp
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@ -2,6 +2,7 @@
#include "memory/PMM.h" #include "memory/PMM.h"
#include "bootboot.h" #include "bootboot.h"
#include "log/Log.h"
#include "memory/Memory.h" #include "memory/Memory.h"
#include "memory/MemoryManager.h" #include "memory/MemoryManager.h"
#include "misc/utils.h" #include "misc/utils.h"
@ -130,7 +131,11 @@ void* PMM::request_pages(uint64_t count)
void PMM::free_page(void* address) void PMM::free_page(void* address)
{ {
uint64_t index = (uint64_t)address / PAGE_SIZE; uint64_t index = (uint64_t)address / PAGE_SIZE;
if (index > (bitmap_size * 8)) return; if (index > (bitmap_size * 8))
{
kinfoln("attempt to free out-of-range address %p", address);
return;
}
if (!bitmap_read(index)) return; if (!bitmap_read(index)) return;
bitmap_set(index, false); bitmap_set(index, false);
used_mem -= PAGE_SIZE; used_mem -= PAGE_SIZE;