Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH for 2.6.22] [7/10] x86: Disable KPROBES with DEBUG_RODATA for now | Date | Wed, 20 Jun 2007 12:23:35 +0200 (CEST) |
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Right now Kprobes cannot write to the write protected kernel text when DEBUG_RODATA is enabled. Disallow this in Kconfig for now.
Temporary fix for 2.6.22. In .23 add code to temporarily unprotect it.
Signed-off-by: Andi Kleen <ak@suse.de>
--- arch/i386/Kconfig.debug | 1 + arch/x86_64/Kconfig.debug | 1 + 2 files changed, 2 insertions(+)
Index: linux/arch/i386/Kconfig.debug =================================================================== --- linux.orig/arch/i386/Kconfig.debug +++ linux/arch/i386/Kconfig.debug @@ -49,6 +49,7 @@ config DEBUG_PAGEALLOC config DEBUG_RODATA bool "Write protect kernel read-only data structures" depends on DEBUG_KERNEL + depends on !KPROBES # temporary for 2.6.22 help Mark the kernel read-only data as write-protected in the pagetables, in order to catch accidental (and incorrect) writes to such const Index: linux/arch/x86_64/Kconfig.debug =================================================================== --- linux.orig/arch/x86_64/Kconfig.debug +++ linux/arch/x86_64/Kconfig.debug @@ -9,6 +9,7 @@ source "lib/Kconfig.debug" config DEBUG_RODATA bool "Write protect kernel read-only data structures" depends on DEBUG_KERNEL + depends on !KPROBES # temporary for 2.6.22 help Mark the kernel read-only data as write-protected in the pagetables, in order to catch accidental (and incorrect) writes to such const data. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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