This closes a hole in our SMAP implementation. This patch comes from grsecurity. Good catch!
Cc: [email protected] Signed-off-by: Andy Lutomirski <[email protected]> --- arch/x86/entry/entry_64.S | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index d271fb79248f..6d078b89a5e8 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -1211,6 +1211,8 @@ ENTRY(nmi) * other IST entries. */ + ASM_CLAC + /* Use %rdx as our temp variable throughout */ pushq %rdx -- 2.13.3
