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Check whether gX86PagingMethod is NULL in arch_vm_translation_map_is_kernel_page_accessible.

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This means that the kernel debugger won't cause a recursive panic if a
panic occurs before vm_init().
This commit is contained in:
Alex Smith
2012-07-04 14:23:35 +01:00
parent 4304bb9894
commit 428b9e758c
1 changed files with 3 additions and 0 deletions
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src/system/kernel/arch/x86/arch_vm_translation_map.cpp
+3
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@@ -144,5 +144,8 @@ bool
arch_vm_translation_map_is_kernel_page_accessible(addr_t virtualAddress, arch_vm_translation_map_is_kernel_page_accessible(addr_t virtualAddress,
uint32 protection) uint32 protection)
{ {
if (!gX86PagingMethod)
return true;
return gX86PagingMethod->IsKernelPageAccessible(virtualAddress, protection); return gX86PagingMethod->IsKernelPageAccessible(virtualAddress, protection);
} }