[PATCH -next] arch/x86: Return value from notify_die should to be checked.

[Bo YU]

This is detected by Coverity scan: #CID: 1464472(CHECKED_RETURN)

FIXES: c94082656dac7(x86: Use enum instead of literals for trap values)
Signed-off-by: Bo YU <tsu.yubo@xxxxxxxxx>
---
arch/x86/kernel/traps.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index af75109485c2..bf014fb59017 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -401,7 +401,8 @@ DEFINE_IDTENTRY_DF(exc_double_fault)

	nmi_enter();
	instrumentation_begin();
-	notify_die(DIE_TRAP, str, regs, error_code, X86_TRAP_DF, SIGSEGV);
+	if (notify_die(DIE_TRAP, str, regs, error_code, X86_TRAP_DF, SIGSEGV))
+		return;

	tsk->thread.error_code = error_code;
	tsk->thread.trap_nr = X86_TRAP_DF;
--
2.11.0