From: Thomas Gleixner tglx@linutronix.de
commit 3d51507f29f2153a658df4a0674ec5b592b62085 upstream.
All exception entry points must have ASM_CLAC right at the beginning. The general_protection entry is missing one.
Fixes: e59d1b0a2419 ("x86-32, smap: Add STAC/CLAC instructions to 32-bit kernel entry") Signed-off-by: Thomas Gleixner tglx@linutronix.de Reviewed-by: Frederic Weisbecker frederic@kernel.org Reviewed-by: Alexandre Chartre alexandre.chartre@oracle.com Reviewed-by: Andy Lutomirski luto@kernel.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20200225220216.219537887@linutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/entry/entry_32.S | 1 + 1 file changed, 1 insertion(+)
--- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -1694,6 +1694,7 @@ SYM_CODE_START(int3) SYM_CODE_END(int3)
SYM_CODE_START(general_protection) + ASM_CLAC pushl $do_general_protection jmp common_exception SYM_CODE_END(general_protection)