3.16.50-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Andy Lutomirski <l...@kernel.org> commit e93c17301ac55321fc18e0f8316e924e58a83c8c upstream. This closes a hole in our SMAP implementation. This patch comes from grsecurity. Good catch! Signed-off-by: Andy Lutomirski <l...@kernel.org> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Josh Poimboeuf <jpoim...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Link: http://lkml.kernel.org/r/314cc9f294e8f14ed85485727556ad4f15bb1659.1502159503.git.l...@kernel.org Signed-off-by: Ingo Molnar <mi...@kernel.org> [bwh: Backported to 3.16: adjust filename, context] Signed-off-by: Ben Hutchings <b...@decadent.org.uk> --- arch/x86/kernel/entry_64.S | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -1476,6 +1476,8 @@ ENTRY(nmi) * other IST entries. */ + ASM_CLAC + /* Use %rdx as out temp variable throughout */ pushq_cfi %rdx CFI_REL_OFFSET rdx, 0
