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(+)
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S index d074320..37d9016 100644 --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -1489,6 +1489,7 @@ ENTRY(int3) END(int3)
ENTRY(general_protection) + ASM_CLAC pushl $do_general_protection jmp common_exception END(general_protection)