[kvm-unit-tests PATCH 17/32] arch-run: Fix handling multiple exit status messages

[Nicholas Piggin <npiggin@gmail.com>]

In SMP tests, it's possible for multiple CPUs to print an exit
message if they abort concurrently, confusing the harness:

  EXIT: STATUS=127

  EXIT: STATUS=127
  scripts/arch-run.bash: line 85: [: too many arguments
  scripts/arch-run.bash: line 93: return: too many arguments

lib/arch code should probably serialise this to prevent it, but
at the moment not all do. So make the parser handle this by
just looking at the first EXIT.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Andrew Jones <andrew.jones@linux.dev>
Cc: kvm@vger.kernel.org
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 scripts/arch-run.bash | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
index 5c7e72036..4af670f1c 100644
--- a/scripts/arch-run.bash
+++ b/scripts/arch-run.bash
@@ -79,7 +79,7 @@ run_qemu_status ()
 	exec {stdout}>&-
 
 	if [ $ret -eq 1 ]; then
-		testret=$(grep '^EXIT: ' <<<"$lines" | sed 's/.*STATUS=\([0-9][0-9]*\).*/\1/')
+		testret=$(grep '^EXIT: ' <<<"$lines" | head -n1 | sed 's/.*STATUS=\([0-9][0-9]*\).*/\1/')
 		if [ "$testret" ]; then
 			if [ $testret -eq 1 ]; then
 				ret=0
-- 
2.42.0