From: Andi Kleen Date: Wed, 20 Jun 2007 10:23:35 +0000 (+0200) Subject: x86: Disable KPROBES with DEBUG_RODATA for now X-Git-Tag: upstream/snapshot3+hdmi~33338 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=55181000cd60334fe920c65ffbcdfe0e3f1de406;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git x86: Disable KPROBES with DEBUG_RODATA for now 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 Signed-off-by: Linus Torvalds --- diff --git a/arch/i386/Kconfig.debug b/arch/i386/Kconfig.debug index b31c080..6293920 100644 --- a/arch/i386/Kconfig.debug +++ b/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 diff --git a/arch/x86_64/Kconfig.debug b/arch/x86_64/Kconfig.debug index 775d211..8a86775 100644 --- a/arch/x86_64/Kconfig.debug +++ b/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.