[RFC/PATCH 3/7] [TEMPORARY] x86/entry/32: Sanity check for work_notifysig

[Andy Lutomirski]

44fbbb3dc687c added an unnecessary check.  Add a temporary assertion
to confirm that it's unnecessary.

Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
---
 arch/x86/entry/entry_32.S | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index a36d5df6a749..d36afad80ad1 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -491,10 +491,13 @@ work_notifysig:					# deal with pending signals and
 #endif
 	TRACE_IRQS_ON
 	ENABLE_INTERRUPTS(CLBR_NONE)
+	/* Temporary sanity check */
 	movb	PT_CS(%esp), %bl
 	andb	$SEGMENT_RPL_MASK, %bl
 	cmpb	$USER_RPL, %bl
-	jb	resume_kernel
+	jnb	2f
+	ud2
+2:
 	xorl	%edx, %edx
 	call	do_notify_resume
 	jmp	resume_userspace
-- 
2.4.3

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