Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH v2 16/29] x86: Move EXCEPTION_TABLE to RO_DATA segment | Date | Thu, 10 Oct 2019 17:05:56 -0700 |
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The exception table was needlessly marked executable. In preparation for execute-only memory, move the table into the RO_DATA segment via the new macro that can be used by any architectures that want to make a similar consolidation.
Signed-off-by: Kees Cook <keescook@chromium.org> --- arch/x86/kernel/vmlinux.lds.S | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index a1a758e25b2b..b06d6e1188de 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -22,6 +22,7 @@ #endif #define EMITS_PT_NOTE +#define RO_EXCEPTION_TABLE_ALIGN 16 #include <asm-generic/vmlinux.lds.h> #include <asm/asm-offsets.h> @@ -145,8 +146,6 @@ SECTIONS #endif } :text = 0x9090 - EXCEPTION_TABLE(16) - /* End of text section, which should occupy whole number of pages */ _etext = .; . = ALIGN(PAGE_SIZE); -- 2.17.1
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