diff --git a/test/lib/utils.sh b/test/lib/utils.sh
index 24b7f89a1..4223ce224 100644
--- a/test/lib/utils.sh
+++ b/test/lib/utils.sh
@@ -138,25 +138,29 @@ STACKTRACE() {
 		# Check for all cores newer then TESTNAME file
 		# Assume users keep prefix 'core'
 		# TODO: possibly better integrate with coredumpctl & systemd
-		while IFS= read -r i; do
+		local cores=()
+		local IFS=$IFS_NL
+		cores=( $(find . "$(dirname "$(sysctl -n kernel.core_pattern)")" \
+			"/var/lib/systemd/coredump/" -name 'core*' -newer TESTNAME 2>/dev/null || true ) )
+
+		for i in "${cores[@]-}"; do
 			bin=$(gdb -batch -c "$i" 2>&1 | grep "generated by" | \
 			sed -e "s,.*generated by \`\([^ ']*\).*,\1,") || continue
-			{
-				echo bt full
-				echo l
-				echo quit
-			} > gdb_commands.txt || rm -f gdb_commands.txt
+			cat > gdb_commands.txt <<- EOF || rm -f gdb_commands.txt
+				bt full
+				l
+				quit
+			EOF
 
 			if test ! -s gdb_commands.txt ; then
-				echo "Out of disk space, can't check coredump $i generated by $bin."
-				continue
+				echo "Out of disk space, cannot check coredump \"$i\" generated by \"$bin\"."
+				break
 			fi
 
 			echo "## Checking coredump: $i generated by $bin."
 			gdb -batch -c "$i" -x gdb_commands.txt "$(which "$bin")" 2>/dev/null | \
 			sed -e "s,^,## GDB:	," || continue
-		done < <(find . "$(dirname "$(sysctl -n kernel.core_pattern)")" \
-			"/var/lib/systemd/coredump/" -name 'core*' -newer TESTNAME 2>/dev/null || true)
+		done
 	fi
 
 	test -f SKIP_THIS_TEST && exit 200