00:05:31.553  ========== Backtrace start: ==========
00:05:31.553  
00:05:31.553  in /home/vagrant/spdk_repo/spdk/test/bdev/nbd_common.sh:135 -> nbd_with_lvol_verify(["/var/tmp/spdk-nbd.sock"],["/dev/nbd0"])
00:05:31.553       ...
00:05:31.553     130 	function nbd_with_lvol_verify() {
00:05:31.553     131 		local rpc_server=$1
00:05:31.553     132 		local nbd=$2
00:05:31.553     133 	
00:05:31.553     134 		$rootdir/scripts/rpc.py -s $rpc_server bdev_malloc_create -b malloc_lvol_verify 16 512
00:05:31.553  => 135 		$rootdir/scripts/rpc.py -s $rpc_server bdev_lvol_create_lvstore malloc_lvol_verify lvs
00:05:31.553     136 		$rootdir/scripts/rpc.py -s $rpc_server bdev_lvol_create lvol 4 -l lvs
00:05:31.553     137 		$rootdir/scripts/rpc.py -s $rpc_server nbd_start_disk lvs/lvol "$nbd"
00:05:31.553     138 	
00:05:31.553     139 		wait_for_nbd_set_capacity "$nbd"
00:05:31.553     140 	
00:05:31.553       ...
00:05:31.553  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:323 -> nbd_function_test(["/home/vagrant/spdk_repo/spdk/test/bdev/bdev.json"],["Nvme0n1"],[""])
00:05:31.553       ...
00:05:31.553     318 		trap 'cleanup; killprocess $nbd_pid' SIGINT SIGTERM EXIT
00:05:31.553     319 		waitforlisten $nbd_pid $rpc_server
00:05:31.553     320 	
00:05:31.553     321 		nbd_rpc_start_stop_verify $rpc_server "${bdev_list[*]}"
00:05:31.553     322 		nbd_rpc_data_verify $rpc_server "${bdev_list[*]}" "${nbd_list[*]}"
00:05:31.553  => 323 		nbd_with_lvol_verify $rpc_server "${nbd_list[0]}"
00:05:31.553     324 	
00:05:31.553     325 		killprocess $nbd_pid
00:05:31.553     326 		trap - SIGINT SIGTERM EXIT
00:05:31.553     327 	}
00:05:31.553     328 	
00:05:31.553       ...
00:05:31.553  in /home/vagrant/spdk_repo/spdk/test/common/autotest_common.sh:1125 -> run_test(["bdev_nbd"],["nbd_function_test"],["/home/vagrant/spdk_repo/spdk/test/bdev/bdev.json"],["Nvme0n1"],[""])
00:05:31.553       ...
00:05:31.553     1120		timing_enter $test_name
00:05:31.553     1121		echo "************************************"
00:05:31.553     1122		echo "START TEST $test_name"
00:05:31.553     1123		echo "************************************"
00:05:31.553     1124		xtrace_restore
00:05:31.553     1125		time "$@"
00:05:31.553     1126		xtrace_disable
00:05:31.553     1127		echo "************************************"
00:05:31.553     1128		echo "END TEST $test_name"
00:05:31.553     1129		echo "************************************"
00:05:31.553     1130		timing_exit $test_name
00:05:31.553       ...
00:05:31.553  in /home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh:761 -> main(["nvme"])
00:05:31.553       ...
00:05:31.553     756 	
00:05:31.553     757 	trap "cleanup" SIGINT SIGTERM EXIT
00:05:31.553     758 	
00:05:31.553     759 	run_test "bdev_hello_world" $SPDK_EXAMPLE_DIR/hello_bdev --json "$conf_file" -b "$hello_world_bdev" "$env_ctx"
00:05:31.553     760 	run_test "bdev_bounds" bdev_bounds "$env_ctx"
00:05:31.553  => 761 	run_test "bdev_nbd" nbd_function_test "$conf_file" "${bdevs_name[*]}" "$env_ctx"
00:05:31.553     762 	if [[ $CONFIG_FIO_PLUGIN == y ]]; then
00:05:31.554     763 		if [ "$test_type" = "nvme" ] || [ "$test_type" = "gpt" ]; then
00:05:31.554     764 			# TODO: once we get real multi-ns drives, re-enable this test for NVMe.
00:05:31.554     765 			echo "skipping fio tests on NVMe due to multi-ns failures."
00:05:31.554     766 		else
00:05:31.554       ...
00:05:31.554  
00:05:31.554  ========== Backtrace end ==========
00:05:31.811  ========== Backtrace start: ==========
00:05:31.811  
00:05:31.811  in /home/vagrant/spdk_repo/spdk/test/common/autotest_common.sh:1125 -> run_test(["blockdev_nvme"],["/home/vagrant/spdk_repo/spdk/test/bdev/blockdev.sh"],["nvme"])
00:05:31.811       ...
00:05:31.811     1120		timing_enter $test_name
00:05:31.811     1121		echo "************************************"
00:05:31.811     1122		echo "START TEST $test_name"
00:05:31.811     1123		echo "************************************"
00:05:31.811     1124		xtrace_restore
00:05:31.811     1125		time "$@"
00:05:31.811     1126		xtrace_disable
00:05:31.811     1127		echo "************************************"
00:05:31.812     1128		echo "END TEST $test_name"
00:05:31.812     1129		echo "************************************"
00:05:31.812     1130		timing_exit $test_name
00:05:31.812       ...
00:05:31.812  in /home/vagrant/spdk_repo/spdk/autotest.sh:208 -> main(["/home/vagrant/spdk_repo/autorun-spdk.conf"])
00:05:31.812       ...
00:05:31.812     203 				fi
00:05:31.812     204 			fi
00:05:31.812     205 		fi
00:05:31.812     206 	
00:05:31.812     207 		if [ $SPDK_TEST_NVME -eq 1 ]; then
00:05:31.812  => 208 			run_test "blockdev_nvme" $rootdir/test/bdev/blockdev.sh "nvme"
00:05:31.812     209 			if [[ $(uname -s) == Linux ]]; then
00:05:31.812     210 				run_test "blockdev_nvme_gpt" $rootdir/test/bdev/blockdev.sh "gpt"
00:05:31.812     211 			fi
00:05:31.812     212 			run_test "nvme" $rootdir/test/nvme/nvme.sh
00:05:31.812     213 			if [[ $SPDK_TEST_NVME_PMR -eq 1 ]]; then
00:05:31.812       ...
00:05:31.812  
00:05:31.812  ========== Backtrace end ==========