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authorAndi Kleen <ak@suse.de>2007-06-20 12:23:35 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-20 14:27:26 -0700
commit55181000cd60334fe920c65ffbcdfe0e3f1de406 (patch)
tree64ecf0214b425e42013b631d8acdcacfafa43048 /arch
parent9f1f79e641c548ee93fb20f69c9a404b92ee4fdd (diff)
downloadop-kernel-dev-55181000cd60334fe920c65ffbcdfe0e3f1de406.zip
op-kernel-dev-55181000cd60334fe920c65ffbcdfe0e3f1de406.tar.gz
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 <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/Kconfig.debug1
-rw-r--r--arch/x86_64/Kconfig.debug1
2 files changed, 2 insertions, 0 deletions
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.
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