import bz2
import shutil
import struct
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
@skipIfFBSDVMCoreSupportMissing
class FreeBSDKernelVMCoreTestCase(TestBase):
NO_DEBUG_INFO_TESTCASE = True
maxDiff = None
def make_target(self, src_filename):
src = self.getSourcePath(src_filename)
dest = self.getBuildArtifact("kernel")
self.yaml2obj(src, dest, max_size=30 * 1024 * 1024)
return self.dbg.CreateTarget(dest)
def make_vmcore(self, src_filename):
src = self.getSourcePath(src_filename)
dest = self.getBuildArtifact("vmcore")
with bz2.open(src, "rb") as inf:
with open(dest, "wb") as outf:
shutil.copyfileobj(inf, outf)
return dest
def do_test(self, kernel_yaml, vmcore_bz2, numthread, threads={}, hz=100):
target = self.make_target(kernel_yaml)
vmcore_file = self.make_vmcore(vmcore_bz2)
process = target.LoadCore(vmcore_file)
self.assertTrue(process, PROCESS_IS_VALID)
self.assertEqual(process.GetNumThreads(), numthread)
self.assertEqual(process.GetProcessID(), 0)
# test memory reading
self.expect("expr -- *(int *) &hz", substrs=["(int) $0 = %d" % hz])
main_mod = target.GetModuleAtIndex(0)
hz_addr = main_mod.FindSymbols("hz")[0].symbol.addr.GetLoadAddress(target)
error = lldb.SBError()
self.assertEqual(process.ReadMemory(hz_addr, 4, error), struct.pack("<I", hz))
for thread_index, thread_data in threads.items():
bt_expected = thread_data["bt"]
regs_expected = thread_data["regs"]
thread = process.GetThreadAtIndex(thread_index)
self.assertEqual(thread.GetName(), thread_data["name"])
# test backtrace
self.assertEqual(
[frame.addr.GetLoadAddress(target) for frame in thread], bt_expected
)
# test registers
regs = thread.GetFrameAtIndex(0).GetRegisters()
reg_values = {}
for regset in regs:
for reg in regset:
if reg.value is None:
continue
reg_values[reg.name] = reg.value
self.assertEqual(reg_values, regs_expected)
self.dbg.DeleteTarget(target)
def test_amd64_full_vmcore(self):
self.do_test(
"kernel-amd64.yaml",
"vmcore-amd64-full.bz2",
numthread=13,
threads={
0: {
"name": "(pid 806) sysctl (crashed)",
"bt": [
0xFFFFFFFF80C09ADE,
0xFFFFFFFF80C09916,
0xFFFFFFFF80C09D90,
0xFFFFFFFF80C09B93,
0xFFFFFFFF80C57D91,
0xFFFFFFFF80C19E71,
0xFFFFFFFF80C192BC,
0xFFFFFFFF80C19933,
0xFFFFFFFF80C1977F,
0xFFFFFFFF8108BA8C,
0xFFFFFFFF810620CE,
],
"regs": {
"rbx": "0x0000000000000000",
"rbp": "0xfffffe0085cb2760",
"rsp": "0xfffffe0085cb2748",
"r12": "0xfffffe0045a6c300",
"r13": "0xfffff800033693a8",
"r14": "0x0000000000000000",
"r15": "0xfffff80003369380",
"rip": "0xffffffff80c09ade",
},
},
1: {
"name": "(pid 11) idle/idle: cpu0 (on CPU 0)",
"bt": [
0xFFFFFFFF81057988,
0xFFFFFFFF81057949,
0xFFFFFFFF8108A5FF,
0xFFFFFFFF81062537,
0xFFFFFFFF80C1AA38,
0xFFFFFFFF80B9D587,
0xFFFFFFFF810575B1,
0xFFFFFFFF81063B33,
0xFFFFFFFF804E3EDB,
0xFFFFFFFF8104DC6E,
0xFFFFFFFF8104DD1F,
0xFFFFFFFF80C3F0B4,
0xFFFFFFFF80BC7C5E,
],
"regs": {
"rbx": "0xffffffff81d43950",
"rbp": "0xffffffff81d43820",
"rsp": "0xffffffff81d43808",
"r12": "0xfffff80003374000",
"r13": "0x00000000027be000",
"r14": "0x0000000000000000",
"r15": "0xfffffe00009f7300",
"rip": "0xffffffff81057988",
},
},
10: {
"name": "(pid 11) idle/idle: cpu9",
"bt": [
0xFFFFFFFF80C3C8C8,
0xFFFFFFFF80C16521,
0xFFFFFFFF80C3F0B4,
0xFFFFFFFF80BC7C5E,
],
"regs": {
"rbx": "0x000000007fff29f4",
"rbp": "0xfffffe00007a4ad0",
"rsp": "0xfffffe00007a4a08",
"r12": "0xfffffe00009fd300",
"r13": "0x0000000000000608",
"r14": "0xfffffe00009250c0",
"r15": "0xfffffe0045a6c300",
"rip": "0xffffffff80c3c8c8",
},
},
},
)
def test_amd64_minidump(self):
self.do_test(
"kernel-amd64.yaml",
"vmcore-amd64-minidump.bz2",
numthread=16,
threads={
0: {
"name": "(pid 800) sysctl (crashed)",
"bt": [
0xFFFFFFFF80C09ADE,
0xFFFFFFFF80C09916,
0xFFFFFFFF80C09D90,
0xFFFFFFFF80C09B93,
0xFFFFFFFF80C57D91,
0xFFFFFFFF80C19E71,
0xFFFFFFFF80C192BC,
0xFFFFFFFF80C19933,
0xFFFFFFFF80C1977F,
0xFFFFFFFF8108BA8C,
0xFFFFFFFF810620CE,
],
"regs": {
"rbx": "0x0000000000000000",
"rbp": "0xfffffe00798c4760",
"rsp": "0xfffffe00798c4748",
"r12": "0xfffffe0045b11c00",
"r13": "0xfffff800033693a8",
"r14": "0x0000000000000000",
"r15": "0xfffff80003369380",
"rip": "0xffffffff80c09ade",
},
},
1: {
"name": "(pid 28) pagedaemon/dom0 (on CPU 4)",
"bt": [
0xFFFFFFFF81057988,
0xFFFFFFFF81057949,
0xFFFFFFFF8108A5FF,
0xFFFFFFFF81062537,
0xFFFFFFFF8107171E,
0xFFFFFFFF81075F9C,
0xFFFFFFFF80F4359E,
0xFFFFFFFF80F494B4,
0xFFFFFFFF80F47430,
0xFFFFFFFF80F46EEE,
0xFFFFFFFF80BC7C5E,
],
"regs": {
"rbx": "0xfffffe00008e2f30",
"rbp": "0xfffffe00008e2e00",
"rsp": "0xfffffe00008e2de8",
"r12": "0xfffff80003845000",
"r13": "0x00000000027be000",
"r14": "0x0000000000000004",
"r15": "0xfffffe00458c2700",
"rip": "0xffffffff81057988",
},
},
2: {
"name": "(pid 28) pagedaemon/laundry: dom0",
"bt": [
0xFFFFFFFF80C3C8C8,
0xFFFFFFFF80C16521,
0xFFFFFFFF80C15C3B,
0xFFFFFFFF80F48DFC,
0xFFFFFFFF80BC7C5E,
],
"regs": {
"rbx": "0x000000007fff25f1",
"rbp": "0xfffffe00527dd890",
"rsp": "0xfffffe00527dd7c8",
"r12": "0xfffffe0045b13100",
"r13": "0x0000000000000104",
"r14": "0xfffffe00008d70c0",
"r15": "0xfffffe00009f5e00",
"rip": "0xffffffff80c3c8c8",
},
},
},
)
def test_arm64_minidump(self):
self.do_test(
"kernel-arm64.yaml",
"vmcore-arm64-minidump.bz2",
hz=1000,
numthread=10,
threads={
0: {
"name": "(pid 939) sysctl (crashed)",
# TODO: fix unwinding
"bt": [
0xFFFF0000004B6E78,
],
"regs": {
"x0": "0x0000000000000000",
"x1": "0x0000000000000000",
"x2": "0x0000000000000000",
"x3": "0x0000000000000000",
"x4": "0x0000000000000000",
"x5": "0x0000000000000000",
"x6": "0x0000000000000000",
"x7": "0x0000000000000000",
"x8": "0xffffa00001548700",
"x9": "0x0000000000000000",
"x10": "0xffffa00000e04580",
"x11": "0x0000000000000000",
"x12": "0x000000000008950a",
"x13": "0x0000000000089500",
"x14": "0x0000000000000039",
"x15": "0x0000000000000000",
"x16": "0x00000000ffffffd8",
"x17": "0x0000000000000000",
"x18": "0xffff000000e6d380",
"x19": "0xffff000000af9000",
"x20": "0xffff000000b82000",
"x21": "0xffffa00000319da8",
"x22": "0xffff000000b84000",
"x23": "0xffff000000b84000",
"x24": "0xffff000000b55000",
"x25": "0x0000000000000000",
"x26": "0x0000000000040800",
"x27": "0x0000000000000000",
"x28": "0x00000000002019ca",
"fp": "0xffff0000d58f23b0",
"sp": "0xffff0000d58f23b0",
"pc": "0xffff0000004b6e78",
},
},
1: {
"name": "(pid 21) syncer (on CPU 6)",
# TODO: fix unwinding
"bt": [
0xFFFF000000811370,
],
"regs": {
"x0": "0x0000000000000000",
"x1": "0x0000000000000000",
"x2": "0x0000000000000000",
"x3": "0x0000000000000000",
"x4": "0x0000000000000000",
"x5": "0x0000000000000000",
"x6": "0x0000000000000000",
"x7": "0x0000000000000000",
"x8": "0x0000000000000006",
"x9": "0x0000000000000560",
"x10": "0xffff000000e8f640",
"x11": "0x0000000000000001",
"x12": "0x0000000056000000",
"x13": "0x0000000000002af8",
"x14": "0x0000000000002710",
"x15": "0x0000000000000002",
"x16": "0x00000000ffffffff",
"x17": "0x0000000000000002",
"x18": "0xffff000000e6db80",
"x19": "0x0000000000000006",
"x20": "0xffff0000853a3670",
"x21": "0xffff0000009279c1",
"x22": "0x0000000000000804",
"x23": "0x0000000000000004",
"x24": "0xffff000082a93000",
"x25": "0xffffa0000053f080",
"x26": "0xffff000000e6391c",
"x27": "0xffff000000e63000",
"x28": "0x0000000000000004",
"fp": "0xffff0000853a35c0",
"sp": "0xffff0000853a35c0",
"pc": "0xffff000000811370",
},
},
4: {
"name": "(pid 11) idle/idle: cpu2",
# TODO: fix unwinding
"bt": [
0xFFFF0000004EE99C,
],
"regs": {
"x0": "0x0000000000000000",
"x1": "0x0000000000000000",
"x2": "0x0000000000000000",
"x3": "0x0000000000000000",
"x4": "0x0000000000000000",
"x5": "0x0000000000000000",
"x6": "0x0000000000000000",
"x7": "0x0000000000000000",
"x8": "0x00000000ffffffff",
"x9": "0x0000000000000001",
"x10": "0x0000000000002710",
"x11": "0x000000007ff7e333",
"x12": "0x000000007ff7ba9c",
"x13": "0x0000000000002af8",
"x14": "0x0000000000002897",
"x15": "0x0000000000002af8",
"x16": "0x00000000000028e1",
"x17": "0x00000000ffffffff",
"x18": "0xffff000000e6d380",
"x19": "0xffffa0000032e580",
"x20": "0xffff000000b82000",
"x21": "0xffff000040517100",
"x22": "0xffffa00000e04580",
"x23": "0xffff000000b84000",
"x24": "0x0000000000000001",
"x25": "0xffff000000dd1000",
"x26": "0xffff000082783898",
"x27": "0xffff000000e26000",
"x28": "0xffff000000b82000",
"fp": "0xffff0000827835f0",
"sp": "0xffff000082783570",
"pc": "0xffff0000004ee99c",
},
},
},
)
def test_i386_minidump(self):
self.do_test(
"kernel-i386.yaml",
"vmcore-i386-minidump.bz2",
numthread=13,
threads={
0: {
"name": "(pid 806) sysctl (crashed)",
"bt": [
0x010025C5,
0x01002410,
0x010027D5,
0x01002644,
0x01049A2F,
0x01011077,
0x01010780,
0x01010C7A,
0x01010AB2,
0x013E9E2D,
0xFFC033F9,
],
"regs": {
"ebp": "0x151968e4",
"esp": "0x151968d8",
"esi": "0x0c77aa80",
"edi": "0x03f0dc80",
"eip": "0x010025c5",
},
},
1: {
"name": "(pid 11) idle/idle: cpu0 (on CPU 0)",
"bt": [
0x013A91F6,
0x013A91C0,
0x013E8CE4,
0xFFC0319F,
0x00000028,
],
"regs": {
"ebp": "0x03d979bc",
"esp": "0x03d979a0",
"esi": "0x000007f7",
"edi": "0x00000000",
"eip": "0x013a91f6",
},
},
12: {
"name": "(pid 11) idle/idle: cpu11",
"bt": [
0x0103012C,
0x0100DE0E,
0x0100B770,
0x010323BE,
0x00FC50B6,
],
"regs": {
"ebp": "0x03dc4af0",
"esp": "0x03dc4aa4",
"esi": "0x03f97e00",
"edi": "0x000003e8",
"eip": "0x0103012c",
},
},
},
)
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