Re: Using module private memory to simulate microkernel's memory protection
From: Ingo Molnar <hidden>
Date: 2009-02-10 14:14:26
Also in:
lkml
* Pengfei Hu [off-list ref] wrote:
quoted hunk ↗ jump to hunk
diff -Nurp old/arch/x86/Kconfig.debug new/arch/x86/Kconfig.debug--- old/arch/x86/Kconfig.debug 2008-10-10 06:13:53.000000000 +0800 +++ new/arch/x86/Kconfig.debug 2008-12-07 19:19:40.000000000 +0800@@ -67,6 +67,16 @@ config DEBUG_PAGEALLOC This results in a large slowdown, but helps to find certain types of memory corruptions. +config DEBUG_KM_PROTECT + bool "Debug kernel memory protect" + depends on DEBUG_KERNEL + select DEBUG_PAGEALLOC + select SLUB + help + Change page table's present flag to prevent other module's accidental + access. This results in a large slowdown and waste more memory, but + helps to find certain types of memory corruptions.
Hm, are you aware of the kmemcheck project? Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>