cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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linux_initrd.py (3365B)

      1# Linux initrd acceptance test.
      2#
      3# Copyright (c) 2018 Red Hat, Inc.
      4#
      5# Author:
      6#  Wainer dos Santos Moschetta <wainersm@redhat.com>
      7#
      8# This work is licensed under the terms of the GNU GPL, version 2 or
      9# later.  See the COPYING file in the top-level directory.
     10
     11import os
     12import logging
     13import tempfile
     14
     15from avocado_qemu import Test
     16from avocado import skipIf
     17
     18
     19class LinuxInitrd(Test):
     20    """
     21    Checks QEMU evaluates correctly the initrd file passed as -initrd option.
     22
     23    :avocado: tags=arch:x86_64
     24    :avocado: tags=machine:pc
     25    """
     26
     27    timeout = 300
     28
     29    def test_with_2gib_file_should_exit_error_msg_with_linux_v3_6(self):
     30        """
     31        Pretends to boot QEMU with an initrd file with size of 2GiB
     32        and expect it exits with error message.
     33        Fedora-18 shipped with linux-3.6 which have not supported xloadflags
     34        cannot support more than 2GiB initrd.
     35        """
     36        kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora/li'
     37                      'nux/releases/18/Fedora/x86_64/os/images/pxeboot/vmlinuz')
     38        kernel_hash = '41464f68efe42b9991250bed86c7081d2ccdbb21'
     39        kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
     40        max_size = 2 * (1024 ** 3) - 1
     41
     42        with tempfile.NamedTemporaryFile() as initrd:
     43            initrd.seek(max_size)
     44            initrd.write(b'\0')
     45            initrd.flush()
     46            self.vm.add_args('-kernel', kernel_path, '-initrd', initrd.name,
     47                             '-m', '4096')
     48            self.vm.set_qmp_monitor(enabled=False)
     49            self.vm.launch()
     50            self.vm.wait()
     51            self.assertEqual(self.vm.exitcode(), 1)
     52            expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
     53                max_size + 1)
     54            self.assertRegex(self.vm.get_log(), expected_msg)
     55
     56    @skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
     57    def test_with_2gib_file_should_work_with_linux_v4_16(self):
     58        """
     59        QEMU has supported up to 4 GiB initrd for recent kernel
     60        Expect guest can reach 'Unpacking initramfs...'
     61        """
     62        kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
     63                      '/linux/releases/28/Everything/x86_64/os/images/pxeboot/'
     64                      'vmlinuz')
     65        kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
     66        kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
     67        max_size = 2 * (1024 ** 3) + 1
     68
     69        with tempfile.NamedTemporaryFile() as initrd:
     70            initrd.seek(max_size)
     71            initrd.write(b'\0')
     72            initrd.flush()
     73
     74            self.vm.set_console()
     75            kernel_command_line = 'console=ttyS0'
     76            self.vm.add_args('-kernel', kernel_path,
     77                             '-append', kernel_command_line,
     78                             '-initrd', initrd.name,
     79                             '-m', '5120')
     80            self.vm.launch()
     81            console = self.vm.console_socket.makefile()
     82            console_logger = logging.getLogger('console')
     83            while True:
     84                msg = console.readline()
     85                console_logger.debug(msg.strip())
     86                if 'Unpacking initramfs...' in msg:
     87                    break
     88                if 'Kernel panic - not syncing' in msg:
     89                    self.fail("Kernel panic reached")