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bootloader: Fix an overlooked condition in mmu_allocate()

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The size variable at this point is actually a page count.
The test should never be true anyway though. Maybe we should use a
pages variable for clarity?
This commit is contained in:
François Revol
2013-02-21 16:35:37 +01:00
parent 8dc3f98eda
commit 32bd2dedd9
5 changed files with 10 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/system/boot/arch/arm/arch_mmu.cpp
+2 -2
View File
@@ -474,8 +474,8 @@ mmu_allocate(void *virtualAddress, size_t size)
addr_t address = (addr_t)virtualAddress;
// is the address within the valid range?
if (address < KERNEL_BASE
|| address + size >= KERNEL_BASE + kMaxKernelSize) {
if (address < KERNEL_BASE || address + size * B_PAGE_SIZE
>= KERNEL_BASE + kMaxKernelSize) {
TRACE(("mmu_allocate in illegal range\n address: %" B_PRIx32
" KERNELBASE: %" B_PRIx32 " KERNEL_BASE + kMaxKernelSize: %"
B_PRIx32 " address + size : %" B_PRIx32 "\n", (uint32)address,
src/system/boot/arch/m68k/mmu.cpp
+2 -1
View File
@@ -338,7 +338,8 @@ mmu_allocate(void *virtualAddress, size_t size)
addr_t address = (addr_t)virtualAddress;
// is the address within the valid range?
if (address < KERNEL_BASE || address + size >= KERNEL_BASE + kMaxKernelSize)
if (address < KERNEL_BASE || address + size * B_PAGE_SIZE
>= KERNEL_BASE + kMaxKernelSize)
return NULL;
for (uint32 i = 0; i < size; i++) {
src/system/boot/platform/amiga_m68k/mmu.cpp
+2 -1
View File
@@ -338,7 +338,8 @@ mmu_allocate(void *virtualAddress, size_t size)
addr_t address = (addr_t)virtualAddress;
// is the address within the valid range?
if (address < KERNEL_BASE || address + size >= KERNEL_BASE + kMaxKernelSize)
if (address < KERNEL_BASE || address + size * B_PAGE_SIZE
>= KERNEL_BASE + kMaxKernelSize)
return NULL;
for (uint32 i = 0; i < size; i++) {
src/system/boot/platform/atari_m68k/mmu.cpp
+2 -1
View File
@@ -339,7 +339,8 @@ mmu_allocate(void *virtualAddress, size_t size)
addr_t address = (addr_t)virtualAddress;
// is the address within the valid range?
if (address < KERNEL_BASE || address + size >= KERNEL_BASE + kMaxKernelSize)
if (address < KERNEL_BASE || address + size * B_PAGE_SIZE
>= KERNEL_BASE + kMaxKernelSize)
return NULL;
for (uint32 i = 0; i < size; i++) {
src/system/boot/platform/bios_ia32/mmu.cpp
+2 -2
View File
@@ -397,8 +397,8 @@ mmu_allocate(void *virtualAddress, size_t size)
addr_t address = (addr_t)virtualAddress;
// is the address within the valid range?
if (address < KERNEL_LOAD_BASE
|| address + size >= KERNEL_LOAD_BASE + kMaxKernelSize)
if (address < KERNEL_LOAD_BASE || address + size * B_PAGE_SIZE
>= KERNEL_LOAD_BASE + kMaxKernelSize)
return NULL;
for (uint32 i = 0; i < size; i++) {