def kernel(build):
qemu = ktest.qemu(kdb=False)
console = qemu.console
console.expect_boot()
console.expect_busybox()
# Older kernels have no async progress display so for these
# kernels we just set a very long timeout (which means failures
# will take a long time to report too)
if kbuild.get_version() < (4, 17):
console.timeout *= 10
print('Kernel is below v4.17, extended timeout to {}'.format(
console.timeout))
yield qemu
qemu.close()
kdb.console.send(' ')
kdb.console.expect('Enter kgdb mode')
# test_pager_search relies on 'Single Step' to detect
# failure. If this expectation requires modifying then
# test_pager_search may need updating too.
kdb.console.expect('Single Step')
kdb.console.expect('more>')
kdb.console.send(' ')
kdb.console.expect('kdb>')
finally:
kdb.console.exit_kdb()
@pytest.mark.xfail(condition=kbuild.get_version() < (5, 10),
reason='pager search eats line after match')
def test_pager_search(kdb):
kdb.console.enter_kdb()
try:
kdb.console.send('help\r')
kdb.console.expect('md.*Display Memory Contents')
kdb.console.expect('env.*Show environment variables')
kdb.console.expect('more>')
kdb.console.send('/')
kdb.console.expect('search>')
kdb.console.send('Common\r')
assert 0 == kdb.console.expect(['Common kdb debugging', 'Single Step'])
kdb.console.expect('First line debugging')
kdb.console.expect('Same as dumpall')
import kbuild
import ktest
import pytest
@pytest.mark.xfail(condition=(kbuild.get_arch() == 'arm64'
and kbuild.get_version() < (4, 17)),
reason='Thread 10 has a PC of 0x0 (so cannot unwind)')
@pytest.mark.xfail(condition=(kbuild.get_arch() == 'x86'),
reason='inconsistent lock state')
def test_kgdb():
'''High-level kgdb smoke test.
Tour a number of kgdb features to prove that basic functionality
if working OK.
'''
kbuild.config(kgdb=True)
kbuild.build()
qemu = ktest.qemu(second_uart=True, gdb=True, append='kgdbwait')
console = qemu.console
gdb = qemu.debug
console.expect_boot(skip_late=True)
console.expect('Waiting for connection from remote gdb...')
gdb.connect_to_target()
gdb.send('where\r')
gdb.expect('kgdb_initial_breakpoint')
gdb.expect(['init_kgdboc', 'configure_kgdboc'])
def test_kgdbts_boot():
kbuild.config(kgdb=True)
kbuild.build()
#
# From drivers/misc/kgdbts.c:
#
# When developing a new kgdb arch specific implementation
# or using these tests for the purpose of regression
# testing, several invocations are required.
#
# 1) Boot with the test suite enabled by using the kernel arguments
# "kgdbts=V1F100 kgdbwait"
#
qemu = ktest.qemu(kdb=False, append='kgdbwait kgdbts=V1F100')
console = qemu.console
# We expect the test suite to start whilst initializing modules
# so we must skip the late boot expectations.
console.expect_boot(skip_late=True)
# Older kernels have no async progress display so for these
# kernels we just set a very long timeout (which means failures
# will take a long time to report too)
if kbuild.get_version() < (4, 17):
console.timeout *= 5
print('Kernel is below v4.17, extended timeout to {}'.format(
console.timeout))
console.expect('Registered I/O driver kgdbts')
# Check that the self test starts to run. The failure detect
# relies on all error paths calling WARN_ON().
choices = [
'WARNING.*kgdbts[.]c.*[/r/n]', 'KGDB: BP remove failed', 'kgdbts:RUN'
]
choice = console.expect(choices)
assert choice > 1
# Ordering is difficult here since the Unregistered I/O... message
# is aynschnronous. We solve that just by waiting for all of the
# following strings to appear (in any order).
choices += [
'##INVALID##',
'Unregistered I/O driver kgdbts',
'Freeing unused kernel.*memory',
'Starting.*log',
'OK',
'Welcome to Buildroot',
'buildroot login:'******'{console.match.group(0)}', still waiting for {choices[4:]}"
)
# HACK: Ignore problems with hw_break (we allow kgdbts_V1
# to report them and would like to see the results
# of the single step tests here)
assert choice > 1 or 'hw_break' in console.match.group(0)
if 'login:'******'root')
# After logging in then the prompt becomes a
# valid choice (before that it's too easy to
# mis-match)
choices[3] = '#'
elif '#' in choices[choice]:
# Cause a sys_fork (if there are less than 100 forks
# during the boot sequence the self test we started at
# boot will not complete)
console.sendline('date')
num_forks += 1
assert num_forks < 100
if choice >= 4:
del choices[choice]
console.expect_prompt()
qemu.close()