[PATCH] [48/50] x86_64: return correct error code from child_rip in x86_64 entry.S

[Andi Kleen]

From: Andrey Mirkin <major@xxxxxxxxxx>

Right now register edi is just cleared before calling do_exit.
That is wrong because correct return value will be ignored.
Value from rax should be copied to rdi instead of clearing edi.

AK: changed to 32bit move because it's strictly an int

Signed-off-by: Andrey Mirkin <major@xxxxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxx>

-----

---
 arch/x86_64/kernel/entry.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/arch/x86_64/kernel/entry.S
===================================================================
--- linux.orig/arch/x86_64/kernel/entry.S
+++ linux/arch/x86_64/kernel/entry.S
@@ -989,7 +989,7 @@ child_rip:
 	movq %rsi, %rdi
 	call *%rax
 	# exit
-	xorl %edi, %edi
+	mov %eax, %edi
 	call do_exit
 	CFI_ENDPROC
 ENDPROC(child_rip)
-
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