def __init__(self,
kernel_exec=None,
vmcore=None,
kernelpath=None,
searchpath=None,
debug=False):
print("crash-python initializing...")
if searchpath is None:
searchpath = []
autoload_submodules('crash.cache')
autoload_submodules('crash.subsystem')
autoload_submodules('crash.commands')
self.searchpath = searchpath
if not kernel_exec:
return
error = gdb.execute("file {}".format(kernel_exec), to_string=True)
try:
list_type = gdb.lookup_type('struct list_head')
except gdb.error as e:
load_debuginfo(searchpath, gdb.objfiles()[0], kernelpath)
try:
list_type = gdb.lookup_type('struct list_head')
except gdb.error as e:
raise RuntimeError(
"Couldn't locate debuginfo for {}".format(kernel_exec))
self.target = crash.kdump.target.Target(vmcore, debug)
load_modules(self.searchpath)
def __init__(self,
kernel: CrashKernel,
verbose: bool = False,
debug: bool = False) -> None:
print("crash-python initializing...")
self.kernel = kernel
autoload_submodules('crash.cache')
autoload_submodules('crash.subsystem')
autoload_submodules('crash.commands')
try:
self.kernel.setup_tasks()
self.kernel.load_modules(verbose=verbose, debug=debug)
except CrashKernelError as e:
print(str(e))
print("Further debugging may not be possible.")
return
if self.kernel.crashing_thread:
try:
result = gdb.execute("thread {}".format(
self.kernel.crashing_thread.num),
to_string=True)
if debug:
print(result)
except gdb.error as e:
print("Error while switching to crashed thread: {}".format(
str(e)))
print("Further debugging may not be possible.")
return
print("Backtrace from crashing task (PID {:d}):".format(
self.kernel.crashing_thread.ptid[1]))
gdb.execute("where")
def __init__(self,
kernel_exec=None,
vmcore=None,
kernelpath=None,
searchpath=None,
debug=False):
self.vmcore_filename = vmcore
print("crash-python initializing...")
if searchpath is None:
searchpath = []
if kernel_exec:
self.kernel = crash.kernel.CrashKernel(kernel_exec, searchpath)
self.kernel.attach_vmcore(vmcore, debug)
self.kernel.open_kernel()
autoload_submodules('crash.cache')
autoload_submodules('crash.subsystem')
autoload_submodules('crash.commands')
if kernel_exec:
self.kernel.setup_tasks()
self.kernel.load_modules(searchpath)
def __init__(self, kernel_exec=None, vmcore=None, kernelpath=None,
searchpath=None, debug=False):
print("crash-python initializing...")
if searchpath is None:
searchpath = []
autoload_submodules('crash.cache')
autoload_submodules('crash.subsystem')
autoload_submodules('crash.commands')
self.searchpath = searchpath
if not kernel_exec:
return
try:
kdump = kdumpfile(vmcore)
except OSErrorException as e:
raise RuntimeError(str(e))
kaslr_off = long(
kdump.attr.get("linux.vmcoreinfo.lines.KERNELOFFSET", "0"),
base=16)
error = gdb.execute("exec-file {}".format(kernel_exec), to_string=True)
tinfo = gdb.execute("info target", to_string=True)
args=""
textaddr = 0
in_exec = False
for line in tinfo.splitlines():
if line.startswith((" ", "\t")):
if not in_exec:
continue
try:
(addrs, sect) = line.strip().split(" is ")
except ValueError:
continue
(start, end) = addrs.split(" - ")
sect = sect.split(' ')[0]
startaddr = long(start, base=0) + kaslr_off
if sect == ".text":
textaddr = startaddr
args += " 0x{:x}".format(startaddr)
elif startaddr >= textaddr:
args += " -s {} 0x{:x}".format(sect, startaddr)
elif line.startswith("Local exec file:"):
in_exec = True
elif not line.startswith("warning: "):
in_exec = False
error = gdb.execute("add-symbol-file {}{}".format(kernel_exec, args), to_string=True)
try:
list_type = gdb.lookup_type('struct list_head')
except gdb.error as e:
load_debuginfo(searchpath, gdb.objfiles()[0], kernelpath)
try:
list_type = gdb.lookup_type('struct list_head')
except gdb.error as e:
raise RuntimeError("Couldn't locate debuginfo for {}".format(kernel_exec))
self.target = crash.kdump.target.Target(kdump, debug)
load_modules(self.searchpath)
def discover():
autoload_submodules('crash.cache')
def discover() -> None:
autoload_submodules('crash.cache')