577 lines
24 KiB
Python
Executable File
577 lines
24 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright (c) 2017 Red Hat Inc
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#
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# Author:
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# Eduardo Habkost <ehabkost@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""
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Run QEMU with all combinations of -machine and -device types,
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check for crashes and unexpected errors.
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"""
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import os
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import sys
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import glob
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import logging
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import traceback
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import re
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import random
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import argparse
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from itertools import chain
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sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'python'))
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from qemu.machine import QEMUMachine
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logger = logging.getLogger('device-crash-test')
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dbg = logger.debug
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# Purposes of the following whitelist:
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# * Avoiding verbose log messages when we find known non-fatal
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# (exitcode=1) errors
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# * Avoiding fatal errors when we find known crashes
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# * Skipping machines/devices that are known not to work out of
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# the box, when running in --quick mode
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#
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# Keeping the whitelist updated is desirable, but not required,
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# because unexpected cases where QEMU exits with exitcode=1 will
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# just trigger a INFO message.
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# Valid whitelist entry keys:
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# * accel: regexp, full match only
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# * machine: regexp, full match only
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# * device: regexp, full match only
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# * log: regexp, partial match allowed
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# * exitcode: if not present, defaults to 1. If None, matches any exitcode
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# * warn: if True, matching failures will be logged as warnings
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# * expected: if True, QEMU is expected to always fail every time
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# when testing the corresponding test case
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# * loglevel: log level of log output when there's a match.
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ERROR_WHITELIST = [
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# Machines that won't work out of the box:
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# MACHINE | ERROR MESSAGE
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{'machine':'niagara', 'expected':True}, # Unable to load a firmware for -M niagara
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{'machine':'boston', 'expected':True}, # Please provide either a -kernel or -bios argument
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{'machine':'leon3_generic', 'expected':True}, # Can't read bios image (null)
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# devices that don't work out of the box because they require extra options to "-device DEV":
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# DEVICE | ERROR MESSAGE
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{'device':'.*-(i386|x86_64)-cpu', 'expected':True}, # CPU socket-id is not set
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{'device':'icp', 'expected':True}, # icp_realize: required link 'xics' not found: Property '.xics' not found
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{'device':'ics', 'expected':True}, # ics_base_realize: required link 'xics' not found: Property '.xics' not found
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# "-device ide-cd" does work on more recent QEMU versions, so it doesn't have expected=True
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{'device':'ide-cd'}, # No drive specified
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{'device':'ide-drive', 'expected':True}, # No drive specified
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{'device':'ide-hd', 'expected':True}, # No drive specified
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{'device':'ipmi-bmc-extern', 'expected':True}, # IPMI external bmc requires chardev attribute
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{'device':'isa-debugcon', 'expected':True}, # Can't create serial device, empty char device
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{'device':'isa-ipmi-bt', 'expected':True}, # IPMI device requires a bmc attribute to be set
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{'device':'isa-ipmi-kcs', 'expected':True}, # IPMI device requires a bmc attribute to be set
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{'device':'isa-parallel', 'expected':True}, # Can't create serial device, empty char device
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{'device':'ivshmem-doorbell', 'expected':True}, # You must specify a 'chardev'
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{'device':'ivshmem-plain', 'expected':True}, # You must specify a 'memdev'
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{'device':'loader', 'expected':True}, # please include valid arguments
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{'device':'nand', 'expected':True}, # Unsupported NAND block size 0x1
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{'device':'nvdimm', 'expected':True}, # 'memdev' property is not set
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{'device':'nvme', 'expected':True}, # Device initialization failed
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{'device':'pc-dimm', 'expected':True}, # 'memdev' property is not set
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{'device':'pci-bridge', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0.
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{'device':'pci-bridge-seat', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0.
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{'device':'pxb', 'expected':True}, # Bridge chassis not specified. Each bridge is required to be assigned a unique chassis id > 0.
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{'device':'scsi-block', 'expected':True}, # drive property not set
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{'device':'scsi-disk', 'expected':True}, # drive property not set
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{'device':'scsi-generic', 'expected':True}, # drive property not set
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{'device':'scsi-hd', 'expected':True}, # drive property not set
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{'device':'spapr-pci-host-bridge', 'expected':True}, # BUID not specified for PHB
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{'device':'spapr-rng', 'expected':True}, # spapr-rng needs an RNG backend!
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{'device':'spapr-vty', 'expected':True}, # chardev property not set
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{'device':'tpm-tis', 'expected':True}, # tpm_tis: backend driver with id (null) could not be found
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{'device':'unimplemented-device', 'expected':True}, # property 'size' not specified or zero
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{'device':'usb-braille', 'expected':True}, # Property chardev is required
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{'device':'usb-mtp', 'expected':True}, # rootdir property must be configured
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{'device':'usb-redir', 'expected':True}, # Parameter 'chardev' is missing
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{'device':'usb-serial', 'expected':True}, # Property chardev is required
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{'device':'usb-storage', 'expected':True}, # drive property not set
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{'device':'vfio-amd-xgbe', 'expected':True}, # -device vfio-amd-xgbe: vfio error: wrong host device name
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{'device':'vfio-calxeda-xgmac', 'expected':True}, # -device vfio-calxeda-xgmac: vfio error: wrong host device name
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{'device':'vfio-pci', 'expected':True}, # No provided host device
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{'device':'vfio-pci-igd-lpc-bridge', 'expected':True}, # VFIO dummy ISA/LPC bridge must have address 1f.0
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{'device':'vhost-scsi.*', 'expected':True}, # vhost-scsi: missing wwpn
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{'device':'vhost-vsock-device', 'expected':True}, # guest-cid property must be greater than 2
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{'device':'vhost-vsock-pci', 'expected':True}, # guest-cid property must be greater than 2
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{'device':'virtio-9p-ccw', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL
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{'device':'virtio-9p-device', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL
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{'device':'virtio-9p-pci', 'expected':True}, # 9pfs device couldn't find fsdev with the id = NULL
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{'device':'virtio-blk-ccw', 'expected':True}, # drive property not set
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{'device':'virtio-blk-device', 'expected':True}, # drive property not set
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{'device':'virtio-blk-device', 'expected':True}, # drive property not set
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{'device':'virtio-blk-pci', 'expected':True}, # drive property not set
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{'device':'virtio-crypto-ccw', 'expected':True}, # 'cryptodev' parameter expects a valid object
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{'device':'virtio-crypto-device', 'expected':True}, # 'cryptodev' parameter expects a valid object
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{'device':'virtio-crypto-pci', 'expected':True}, # 'cryptodev' parameter expects a valid object
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{'device':'virtio-input-host-device', 'expected':True}, # evdev property is required
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{'device':'virtio-input-host-pci', 'expected':True}, # evdev property is required
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{'device':'xen-pvdevice', 'expected':True}, # Device ID invalid, it must always be supplied
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{'device':'vhost-vsock-ccw', 'expected':True}, # guest-cid property must be greater than 2
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{'device':'zpci', 'expected':True}, # target must be defined
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{'device':'pnv-(occ|icp|lpc)', 'expected':True}, # required link 'xics' not found: Property '.xics' not found
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{'device':'powernv-cpu-.*', 'expected':True}, # pnv_core_realize: required link 'xics' not found: Property '.xics' not found
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# ioapic devices are already created by pc and will fail:
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{'machine':'q35|pc.*', 'device':'kvm-ioapic', 'expected':True}, # Only 1 ioapics allowed
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{'machine':'q35|pc.*', 'device':'ioapic', 'expected':True}, # Only 1 ioapics allowed
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# "spapr-cpu-core needs a pseries machine"
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{'machine':'(?!pseries).*', 'device':'.*-spapr-cpu-core', 'expected':True},
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# KVM-specific devices shouldn't be tried without accel=kvm:
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{'accel':'(?!kvm).*', 'device':'kvmclock', 'expected':True},
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# xen-specific machines and devices:
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{'accel':'(?!xen).*', 'machine':'xen.*', 'expected':True},
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{'accel':'(?!xen).*', 'device':'xen-.*', 'expected':True},
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# this fails on some machine-types, but not all, so they don't have expected=True:
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{'device':'vmgenid'}, # vmgenid requires DMA write support in fw_cfg, which this machine type does not provide
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# Silence INFO messages for errors that are common on multiple
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# devices/machines:
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{'log':r"No '[\w-]+' bus found for device '[\w-]+'"},
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{'log':r"images* must be given with the 'pflash' parameter"},
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{'log':r"(Guest|ROM|Flash|Kernel) image must be specified"},
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{'log':r"[cC]ould not load [\w ]+ (BIOS|bios) '[\w-]+\.bin'"},
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{'log':r"Couldn't find rom image '[\w-]+\.bin'"},
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{'log':r"speed mismatch trying to attach usb device"},
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{'log':r"Can't create a second ISA bus"},
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{'log':r"duplicate fw_cfg file name"},
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# sysbus-related error messages: most machines reject most dynamic sysbus devices:
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{'log':r"Option '-device [\w.,-]+' cannot be handled by this machine"},
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{'log':r"Device [\w.,-]+ is not supported by this machine yet"},
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{'log':r"Device [\w.,-]+ can not be dynamically instantiated"},
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{'log':r"Platform Bus: Can not fit MMIO region of size "},
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# other more specific errors we will ignore:
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{'device':'.*-spapr-cpu-core', 'log':r"CPU core type should be"},
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{'log':r"MSI(-X)? is not supported by interrupt controller"},
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{'log':r"pxb-pcie? devices cannot reside on a PCIe? bus"},
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{'log':r"Ignoring smp_cpus value"},
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{'log':r"sd_init failed: Drive 'sd0' is already in use because it has been automatically connected to another device"},
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{'log':r"This CPU requires a smaller page size than the system is using"},
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{'log':r"MSI-X support is mandatory in the S390 architecture"},
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{'log':r"rom check and register reset failed"},
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{'log':r"Unable to initialize GIC, CPUState for CPU#0 not valid"},
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{'log':r"Multiple VT220 operator consoles are not supported"},
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{'log':r"core 0 already populated"},
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{'log':r"could not find stage1 bootloader"},
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# other exitcode=1 failures not listed above will just generate INFO messages:
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{'exitcode':1, 'loglevel':logging.INFO},
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# everything else (including SIGABRT and SIGSEGV) will be a fatal error:
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{'exitcode':None, 'fatal':True, 'loglevel':logging.FATAL},
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]
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def whitelistTestCaseMatch(wl, t):
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"""Check if a test case specification can match a whitelist entry
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This only checks if a whitelist entry is a candidate match
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for a given test case, it won't check if the test case
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results/output match the entry. See whitelistResultMatch().
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"""
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return (('machine' not in wl or
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'machine' not in t or
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re.match(wl['machine'] + '$', t['machine'])) and
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('accel' not in wl or
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'accel' not in t or
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re.match(wl['accel'] + '$', t['accel'])) and
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('device' not in wl or
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'device' not in t or
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re.match(wl['device'] + '$', t['device'])))
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def whitelistCandidates(t):
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"""Generate the list of candidates that can match a test case"""
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for i, wl in enumerate(ERROR_WHITELIST):
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if whitelistTestCaseMatch(wl, t):
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yield (i, wl)
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def findExpectedResult(t):
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"""Check if there's an expected=True whitelist entry for a test case
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Returns (i, wl) tuple, where i is the index in
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ERROR_WHITELIST and wl is the whitelist entry itself.
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"""
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for i, wl in whitelistCandidates(t):
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if wl.get('expected'):
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return (i, wl)
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def whitelistResultMatch(wl, r):
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"""Check if test case results/output match a whitelist entry
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It is valid to call this function only if
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whitelistTestCaseMatch() is True for the entry (e.g. on
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entries returned by whitelistCandidates())
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"""
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assert whitelistTestCaseMatch(wl, r['testcase'])
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return ((wl.get('exitcode', 1) is None or
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r['exitcode'] == wl.get('exitcode', 1)) and
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('log' not in wl or
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re.search(wl['log'], r['log'], re.MULTILINE)))
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def checkResultWhitelist(r):
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"""Look up whitelist entry for a given test case result
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Returns (i, wl) tuple, where i is the index in
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ERROR_WHITELIST and wl is the whitelist entry itself.
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"""
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for i, wl in whitelistCandidates(r['testcase']):
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if whitelistResultMatch(wl, r):
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return i, wl
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raise Exception("this should never happen")
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def qemuOptsEscape(s):
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"""Escape option value QemuOpts"""
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return s.replace(",", ",,")
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def formatTestCase(t):
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"""Format test case info as "key=value key=value" for prettier logging output"""
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return ' '.join('%s=%s' % (k, v) for k, v in t.items())
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def qomListTypeNames(vm, **kwargs):
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"""Run qom-list-types QMP command, return type names"""
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types = vm.command('qom-list-types', **kwargs)
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return [t['name'] for t in types]
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def infoQDM(vm):
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"""Parse 'info qdm' output"""
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args = {'command-line': 'info qdm'}
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devhelp = vm.command('human-monitor-command', **args)
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for l in devhelp.split('\n'):
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l = l.strip()
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if l == '' or l.endswith(':'):
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continue
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d = {'name': re.search(r'name "([^"]+)"', l).group(1),
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'no-user': (re.search(', no-user', l) is not None)}
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yield d
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class QemuBinaryInfo(object):
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def __init__(self, binary, devtype):
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if devtype is None:
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devtype = 'device'
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self.binary = binary
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self._machine_info = {}
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dbg("devtype: %r", devtype)
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args = ['-S', '-machine', 'none,accel=kvm:tcg']
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dbg("querying info for QEMU binary: %s", binary)
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vm = QEMUMachine(binary=binary, args=args)
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vm.launch()
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try:
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self.alldevs = set(qomListTypeNames(vm, implements=devtype, abstract=False))
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# there's no way to query DeviceClass::user_creatable using QMP,
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# so use 'info qdm':
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self.no_user_devs = set([d['name'] for d in infoQDM(vm, ) if d['no-user']])
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self.machines = list(m['name'] for m in vm.command('query-machines'))
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self.user_devs = self.alldevs.difference(self.no_user_devs)
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self.kvm_available = vm.command('query-kvm')['enabled']
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finally:
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vm.shutdown()
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def machineInfo(self, machine):
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"""Query for information on a specific machine-type
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Results are cached internally, in case the same machine-
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type is queried multiple times.
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"""
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if machine in self._machine_info:
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return self._machine_info[machine]
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mi = {}
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args = ['-S', '-machine', '%s' % (machine)]
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dbg("querying machine info for binary=%s machine=%s", self.binary, machine)
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vm = QEMUMachine(binary=self.binary, args=args)
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try:
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vm.launch()
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mi['runnable'] = True
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except KeyboardInterrupt:
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raise
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except:
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dbg("exception trying to run binary=%s machine=%s", self.binary, machine, exc_info=sys.exc_info())
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dbg("log: %r", vm.get_log())
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mi['runnable'] = False
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vm.shutdown()
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self._machine_info[machine] = mi
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return mi
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BINARY_INFO = {}
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def getBinaryInfo(args, binary):
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if binary not in BINARY_INFO:
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BINARY_INFO[binary] = QemuBinaryInfo(binary, args.devtype)
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return BINARY_INFO[binary]
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def checkOneCase(args, testcase):
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"""Check one specific case
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Returns a dictionary containing failure information on error,
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or None on success
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"""
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binary = testcase['binary']
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accel = testcase['accel']
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machine = testcase['machine']
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device = testcase['device']
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dbg("will test: %r", testcase)
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args = ['-S', '-machine', '%s,accel=%s' % (machine, accel),
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'-device', qemuOptsEscape(device)]
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cmdline = ' '.join([binary] + args)
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dbg("will launch QEMU: %s", cmdline)
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vm = QEMUMachine(binary=binary, args=args)
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exc_traceback = None
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try:
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vm.launch()
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except KeyboardInterrupt:
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raise
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except:
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exc_traceback = traceback.format_exc()
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dbg("Exception while running test case")
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finally:
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vm.shutdown()
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ec = vm.exitcode()
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log = vm.get_log()
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if exc_traceback is not None or ec != 0:
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return {'exc_traceback':exc_traceback,
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'exitcode':ec,
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'log':log,
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'testcase':testcase,
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'cmdline':cmdline}
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def binariesToTest(args, testcase):
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if args.qemu:
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r = args.qemu
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else:
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r = [f.path for f in os.scandir('.')
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if f.name.startswith('qemu-system-') and
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f.is_file() and os.access(f, os.X_OK)]
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return r
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def accelsToTest(args, testcase):
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if getBinaryInfo(args, testcase['binary']).kvm_available:
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yield 'kvm'
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yield 'tcg'
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def machinesToTest(args, testcase):
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return getBinaryInfo(args, testcase['binary']).machines
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def devicesToTest(args, testcase):
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return getBinaryInfo(args, testcase['binary']).user_devs
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TESTCASE_VARIABLES = [
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('binary', binariesToTest),
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('accel', accelsToTest),
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('machine', machinesToTest),
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('device', devicesToTest),
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]
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def genCases1(args, testcases, var, fn):
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"""Generate new testcases for one variable
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If an existing item already has a variable set, don't
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generate new items and just return it directly. This
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allows the "-t" command-line option to be used to choose
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a specific test case.
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"""
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for testcase in testcases:
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if var in testcase:
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yield testcase.copy()
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else:
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for i in fn(args, testcase):
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t = testcase.copy()
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t[var] = i
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yield t
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def genCases(args, testcase):
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"""Generate test cases for all variables
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"""
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cases = [testcase.copy()]
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for var, fn in TESTCASE_VARIABLES:
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dbg("var: %r, fn: %r", var, fn)
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cases = genCases1(args, cases, var, fn)
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return cases
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def casesToTest(args, testcase):
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cases = genCases(args, testcase)
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if args.random:
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cases = list(cases)
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cases = random.sample(cases, min(args.random, len(cases)))
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if args.debug:
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cases = list(cases)
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dbg("%d test cases to test", len(cases))
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if args.shuffle:
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cases = list(cases)
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random.shuffle(cases)
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return cases
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def logFailure(f, level):
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t = f['testcase']
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logger.log(level, "failed: %s", formatTestCase(t))
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logger.log(level, "cmdline: %s", f['cmdline'])
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for l in f['log'].strip().split('\n'):
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logger.log(level, "log: %s", l)
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logger.log(level, "exit code: %r", f['exitcode'])
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if f['exc_traceback']:
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logger.log(level, "exception:")
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for l in f['exc_traceback'].split('\n'):
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logger.log(level, " %s", l.rstrip('\n'))
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def main():
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parser = argparse.ArgumentParser(description="QEMU -device crash test")
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parser.add_argument('-t', metavar='KEY=VALUE', nargs='*',
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help="Limit test cases to KEY=VALUE",
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action='append', dest='testcases', default=[])
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parser.add_argument('-d', '--debug', action='store_true',
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help='debug output')
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parser.add_argument('-v', '--verbose', action='store_true', default=True,
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help='verbose output')
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parser.add_argument('-q', '--quiet', dest='verbose', action='store_false',
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help='non-verbose output')
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parser.add_argument('-r', '--random', type=int, metavar='COUNT',
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help='run a random sample of COUNT test cases',
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default=0)
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parser.add_argument('--shuffle', action='store_true',
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help='Run test cases in random order')
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parser.add_argument('--dry-run', action='store_true',
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help="Don't run any tests, just generate list")
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parser.add_argument('-D', '--devtype', metavar='TYPE',
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help="Test only device types that implement TYPE")
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parser.add_argument('-Q', '--quick', action='store_true', default=True,
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help="Quick mode: skip test cases that are expected to fail")
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parser.add_argument('-F', '--full', action='store_false', dest='quick',
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help="Full mode: test cases that are expected to fail")
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parser.add_argument('--strict', action='store_true', dest='strict',
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help="Treat all warnings as fatal")
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parser.add_argument('qemu', nargs='*', metavar='QEMU',
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help='QEMU binary to run')
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args = parser.parse_args()
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if args.debug:
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lvl = logging.DEBUG
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elif args.verbose:
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lvl = logging.INFO
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else:
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lvl = logging.WARN
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logging.basicConfig(stream=sys.stdout, level=lvl, format='%(levelname)s: %(message)s')
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fatal_failures = []
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wl_stats = {}
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skipped = 0
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total = 0
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tc = {}
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dbg("testcases: %r", args.testcases)
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if args.testcases:
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for t in chain(*args.testcases):
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for kv in t.split():
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k, v = kv.split('=', 1)
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tc[k] = v
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if len(binariesToTest(args, tc)) == 0:
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print("No QEMU binary found", file=sys.stderr)
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parser.print_usage(sys.stderr)
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return 1
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for t in casesToTest(args, tc):
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logger.info("running test case: %s", formatTestCase(t))
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total += 1
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expected_match = findExpectedResult(t)
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if (args.quick and
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(expected_match or
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not getBinaryInfo(args, t['binary']).machineInfo(t['machine'])['runnable'])):
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dbg("skipped: %s", formatTestCase(t))
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skipped += 1
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continue
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if args.dry_run:
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continue
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try:
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f = checkOneCase(args, t)
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except KeyboardInterrupt:
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break
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if f:
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i, wl = checkResultWhitelist(f)
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|
dbg("testcase: %r, whitelist match: %r", t, wl)
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wl_stats.setdefault(i, []).append(f)
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level = wl.get('loglevel', logging.DEBUG)
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logFailure(f, level)
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if wl.get('fatal') or (args.strict and level >= logging.WARN):
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fatal_failures.append(f)
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else:
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dbg("success: %s", formatTestCase(t))
|
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if expected_match:
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logger.warn("Didn't fail as expected: %s", formatTestCase(t))
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|
|
logger.info("Total: %d test cases", total)
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|
if skipped:
|
|
logger.info("Skipped %d test cases", skipped)
|
|
|
|
if args.debug:
|
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stats = sorted([(len(wl_stats.get(i, [])), wl) for i, wl in
|
|
enumerate(ERROR_WHITELIST)], key=lambda x: x[0])
|
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for count, wl in stats:
|
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dbg("whitelist entry stats: %d: %r", count, wl)
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|
|
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if fatal_failures:
|
|
for f in fatal_failures:
|
|
t = f['testcase']
|
|
logger.error("Fatal failure: %s", formatTestCase(t))
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|
logger.error("Fatal failures on some machine/device combinations")
|
|
return 1
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if __name__ == '__main__':
|
|
sys.exit(main())
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