3rd-party/linux-kernel-module-cheat
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add a --quiet flag

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test-gdb and test-userland produce beautiful output by default

create def get_common_args to help forward common args to child calls...
it is ugly, but I'm lazy for a perfect solution now
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2019-01-22 00:00:00 +00:00
parent 4d5ae213e0
commit 928b01f458
8 changed files with 200 additions and 137 deletions
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91
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@@ -178,21 +178,6 @@ to use this option:
'--tmux-args',
help='''\
Parameters to pass to the program running on the tmux split. Implies --tmux.
'''
)
self.add_argument(
'-u', '--userland',
help='''\
Run the given userland executable in user mode instead of booting the Linux kernel
in full system mode. In gem5, user mode is called Syscall Emulation (SE) mode and
uses se.py.
Path resolution is similar to --baremetal.
'''
)
self.add_argument(
'--userland-args',
help='''\
CLI arguments to pass to the userland executable.
'''
)
self.add_argument(
@@ -221,6 +206,8 @@ Run QEMU with VNC instead of the default SDL. Connect to it with:
# * https://unix.stackexchange.com/questions/397939/turning-off-kaslr-to-debug-linux-kernel-using-qemu-and-gdb
# * https://stackoverflow.com/questions/44612822/unable-to-debug-kernel-with-qemu-gdb/49840927#49840927
# Turned on by default since v4.12
raise_on_failure = True
show_stdout = True
kernel_cli = 'console_msg_format=syslog nokaslr norandmaps panic=-1 printk.devkmsg=on printk.time=y rw'
if self.env['kernel_cli'] is not None:
kernel_cli += ' {}'.format(self.env['kernel_cli'])
@@ -303,6 +290,8 @@ Run QEMU with VNC instead of the default SDL. Connect to it with:
raise Exception('Baremetal ELF file not found. Tried:\n' + '\n'.join(paths))
cmd = debug_vm.copy()
if self.env['emulator'] == 'gem5':
if self.env['quiet']:
show_stdout = False
if self.env['baremetal'] is None:
if not os.path.exists(self.env['rootfs_raw_file']):
if not os.path.exists(self.env['qcow2_file']):
@@ -415,7 +404,7 @@ Run QEMU with VNC instead of the default SDL. Connect to it with:
if self.env['wait_gdb']:
# https://stackoverflow.com/questions/49296092/how-to-make-gem5-wait-for-gdb-to-connect-to-reliably-break-at-start-kernel-of-th
cmd.extend(['--param', 'system.cpu[0].wait_for_remote_gdb = True', LF])
else:
elif self.env['emulator'] == 'qemu':
qemu_user_and_system_options = [
'-trace', 'enable={},file={}'.format(trace_type, self.env['qemu_trace_file']), LF,
]
@@ -432,6 +421,8 @@ Run QEMU with VNC instead of the default SDL. Connect to it with:
qemu_user_and_system_options +
debug_args
)
show_stdout = False
raise_on_failure = False
else:
if not os.path.exists(self.env['image']):
raise_image_not_found()
@@ -452,6 +443,8 @@ Run QEMU with VNC instead of the default SDL. Connect to it with:
else:
if self.env['background']:
serial_monitor = ['-serial', 'file:{}'.format(self.env['qemu_background_serial_file']), LF]
if self.env['quiet']:
show_stdout = False
else:
serial_monitor = ['-serial', 'mon:stdio', LF]
if self.env['kvm']:
@@ -592,36 +585,44 @@ Run QEMU with VNC instead of the default SDL. Connect to it with:
out_file = None
else:
out_file = self.env['termout_file']
self.sh.run_cmd(cmd, cmd_file=self.env['run_cmd_file'], out_file=out_file, extra_env=extra_env)
# Check if guest panicked.
if self.env['emulator'] == 'gem5':
# We have to do some parsing here because gem5 exits with status 0 even when panic happens.
# Grepping for '^panic: ' does not work because some errors don't show that message.
panic_msg = b'--- BEGIN LIBC BACKTRACE ---$'
else:
panic_msg = b'Kernel panic - not syncing'
panic_re = re.compile(panic_msg)
error_string_found = False
exit_status = 0
if out_file is not None and not self.env['dry_run']:
with open(self.env['termout_file'], 'br') as logfile:
line = None
for line in logfile:
if panic_re.search(line):
exit_status = 1
if line is not None:
last_line = line.rstrip()
match = re.search(b'Simulated exit code not 0! Exit code is (\d+)', last_line)
if match:
exit_status = int(match.group(1))
if not self.env['userland']:
if os.path.exists(self.env['guest_terminal_file']):
with open(self.env['guest_terminal_file'], 'br') as logfile:
lines = logfile.readlines()
if lines and lines[-1].rstrip() == self.env['magic_fail_string']:
exit_status = self.sh.run_cmd(
cmd,
cmd_file=self.env['run_cmd_file'],
extra_env=extra_env,
out_file=out_file,
raise_on_failure=raise_on_failure,
show_stdout=show_stdout,
)
if exit_status == 0:
# Check if guest panicked.
if self.env['emulator'] == 'gem5':
# We have to do some parsing here because gem5 exits with status 0 even when panic happens.
# Grepping for '^panic: ' does not work because some errors don't show that message.
panic_msg = b'--- BEGIN LIBC BACKTRACE ---$'
else:
panic_msg = b'Kernel panic - not syncing'
panic_re = re.compile(panic_msg)
error_string_found = False
exit_status = 0
if out_file is not None and not self.env['dry_run']:
with open(self.env['termout_file'], 'br') as logfile:
line = None
for line in logfile:
if panic_re.search(line):
exit_status = 1
if exit_status != 0:
self.log_error('simulation error detected by parsing logs')
if line is not None:
last_line = line.rstrip()
match = re.search(b'Simulated exit code not 0! Exit code is (\d+)', last_line)
if match:
exit_status = int(match.group(1))
if not self.env['userland']:
if os.path.exists(self.env['guest_terminal_file']):
with open(self.env['guest_terminal_file'], 'br') as logfile:
lines = logfile.readlines()
if lines and lines[-1].rstrip() == self.env['magic_fail_string']:
exit_status = 1
if exit_status != 0:
self.log_error('simulation error detected by parsing logs')
return exit_status
if __name__ == '__main__':