This revision was automatically updated to reflect the committed changes.
Closed by commit rL265391: Fix a bug in linux core file handling (authored by
labath).
Changed prior to commit:
http://reviews.llvm.org/D18697?vs=52572&id=52679#toc
Repository:
rL LLVM
http://reviews.llvm.org/D18697
Files:
lldb/trunk/include/lldb/Target/Process.h
lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/TestLinuxCore.py
lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/altmain.c
lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/altmain.core
lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/altmain.out
lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/make-core.sh
lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.cpp
lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.h
lldb/trunk/source/Target/Process.cpp
Index: lldb/trunk/source/Target/Process.cpp
===================================================================
--- lldb/trunk/source/Target/Process.cpp
+++ lldb/trunk/source/Target/Process.cpp
@@ -3422,7 +3422,7 @@
else if (!process_arch.IsValid())
{
ProcessInstanceInfo process_info;
- platform_sp->GetProcessInfo (GetID(), process_info);
+ GetProcessInfo(process_info);
const ArchSpec &process_arch = process_info.GetArchitecture();
if (process_arch.IsValid() && !GetTarget().GetArchitecture().IsExactMatch(process_arch))
{
@@ -6481,6 +6481,18 @@
}
}
+bool
+Process::GetProcessInfo(ProcessInstanceInfo &info)
+{
+ info.Clear();
+
+ PlatformSP platform_sp = GetTarget().GetPlatform();
+ if (! platform_sp)
+ return false;
+
+ return platform_sp->GetProcessInfo(GetID(), info);
+}
+
ThreadCollectionSP
Process::GetHistoryThreads(lldb::addr_t addr)
{
Index: lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.h
===================================================================
--- lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.h
+++ lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.h
@@ -111,6 +111,9 @@
const lldb::DataBufferSP
GetAuxvData() override;
+ bool
+ GetProcessInfo(lldb_private::ProcessInstanceInfo &info) override;
+
protected:
void
Clear ( );
Index: lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.cpp
===================================================================
--- lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.cpp
+++ lldb/trunk/source/Plugins/Process/elf-core/ProcessElfCore.cpp
@@ -637,3 +637,18 @@
lldb::DataBufferSP buffer(new lldb_private::DataBufferHeap(start, len));
return buffer;
}
+
+bool
+ProcessElfCore::GetProcessInfo(ProcessInstanceInfo &info)
+{
+ info.Clear();
+ info.SetProcessID(GetID());
+ info.SetArchitecture(GetArchitecture());
+ lldb::ModuleSP module_sp = GetTarget().GetExecutableModule();
+ if (module_sp)
+ {
+ const bool add_exe_file_as_first_arg = false;
+ info.SetExecutableFile(GetTarget().GetExecutableModule()->GetFileSpec(), add_exe_file_as_first_arg);
+ }
+ return true;
+}
Index: lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
===================================================================
--- lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
+++ lldb/trunk/source/Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.cpp
@@ -656,7 +656,7 @@
const auto platform_sp = target.GetPlatform ();
ProcessInstanceInfo process_info;
- if (!platform_sp->GetProcessInfo (m_process->GetID (), process_info))
+ if (!m_process->GetProcessInfo(process_info))
{
if (log)
log->Printf ("DynamicLoaderPOSIXDYLD::%s - failed to get process info for pid %" PRIu64,
Index: lldb/trunk/include/lldb/Target/Process.h
===================================================================
--- lldb/trunk/include/lldb/Target/Process.h
+++ lldb/trunk/include/lldb/Target/Process.h
@@ -1961,6 +1961,9 @@
void
PrintWarningOptimization (const SymbolContext &sc);
+ virtual bool
+ GetProcessInfo(ProcessInstanceInfo &info);
+
public:
//------------------------------------------------------------------
/// Get the exit status for a process.
Index: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/make-core.sh
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/make-core.sh
+++ lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/make-core.sh
@@ -2,6 +2,14 @@
set -e -x
+file=$1
+if [ -z "$file" ]; then
+ cat <<EOF
+Please supply the main source file as the first argument.
+EOF
+ exit 1
+fi
+
if grep -q '^|' </proc/sys/kernel/core_pattern; then
cat <<EOF
Your system uses a crash report tool ($(cat /proc/sys/kernel/core_pattern)). Core files
@@ -21,7 +29,7 @@
EOF
fi
-${CC:-cc} -nostdlib -static -g $CFLAGS main.c -o a.out
+${CC:-cc} -nostdlib -static -g $CFLAGS "$file" -o a.out
cat <<EOF
Executable file is in a.out.
Index: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/altmain.c
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/altmain.c
+++ lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/altmain.c
@@ -0,0 +1,6 @@
+void _start(void)
+{
+ const char *F = "_start";
+ char *boom = (char *)0;
+ *boom = 47; // Frame _start
+}
Index: lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/TestLinuxCore.py
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/TestLinuxCore.py
+++ lldb/trunk/packages/Python/lldbsuite/test/functionalities/postmortem/linux-core/TestLinuxCore.py
@@ -4,29 +4,78 @@
from __future__ import print_function
+import shutil
+import struct
+
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class LinuxCoreTestCase(TestBase):
+ NO_DEBUG_INFO_TESTCASE = True
mydir = TestBase.compute_mydir(__file__)
+ _i386_pid = 32306
+ _x86_64_pid = 32259
+
@skipIf(bugnumber="llvm.org/pr26947")
- @no_debug_info_test
def test_i386(self):
"""Test that lldb can read the process information from an i386 linux core file."""
- self.do_test("i386", 32306)
+ self.do_test("i386", self._i386_pid)
- @no_debug_info_test
def test_x86_64(self):
"""Test that lldb can read the process information from an x86_64 linux core file."""
- self.do_test("x86_64", 32259)
+ self.do_test("x86_64", self._x86_64_pid)
- def do_test(self, arch, pid):
- target = self.dbg.CreateTarget(arch + ".out")
- process = target.LoadCore(arch + ".core")
+ def test_same_pid_running(self):
+ """Test that we read the information from the core correctly even if we have a running
+ process with the same PID around"""
+ try:
+ shutil.copyfile("x86_64.out", "x86_64-pid.out")
+ shutil.copyfile("x86_64.core", "x86_64-pid.core")
+ with open("x86_64-pid.core", "r+b") as f:
+ # These are offsets into the NT_PRSTATUS and NT_PRPSINFO structures in the note
+ # segment of the core file. If you update the file, these offsets may need updating
+ # as well. (Notes can be viewed with readelf --notes.)
+ for pid_offset in [0x1c4, 0x320]:
+ f.seek(pid_offset)
+ self.assertEqual(struct.unpack("<I", f.read(4))[0], self._x86_64_pid)
+
+ # We insert our own pid, and make sure the test still works.
+ f.seek(pid_offset)
+ f.write(struct.pack("<I", os.getpid()))
+ self.do_test("x86_64-pid", os.getpid())
+ finally:
+ self.RemoveTempFile("x86_64-pid.out")
+ self.RemoveTempFile("x86_64-pid.core")
+
+ def test_two_cores_same_pid(self):
+ """Test that we handle the situation if we have two core files with the same PID
+ around"""
+ alttarget = self.dbg.CreateTarget("altmain.out")
+ altprocess = alttarget.LoadCore("altmain.core")
+ self.assertTrue(altprocess, PROCESS_IS_VALID)
+ self.assertEqual(altprocess.GetNumThreads(), 1)
+ self.assertEqual(altprocess.GetProcessID(), self._x86_64_pid)
+
+ altframe = altprocess.GetSelectedThread().GetFrameAtIndex(0)
+ self.assertEqual(altframe.GetFunctionName(), "_start")
+ self.assertEqual(altframe.GetLineEntry().GetLine(), line_number("altmain.c", "Frame _start"))
+
+ error = lldb.SBError()
+ F = altprocess.ReadCStringFromMemory(altframe.FindVariable("F").GetValueAsUnsigned(), 256, error)
+ self.assertTrue(error.Success())
+ self.assertEqual(F, "_start")
+
+ # without destroying this process, run the test which opens another core file with the
+ # same pid
+ self.do_test("x86_64", self._x86_64_pid)
+
+ def do_test(self, filename, pid):
+ target = self.dbg.CreateTarget(filename + ".out")
+ process = target.LoadCore(filename + ".core")
self.assertTrue(process, PROCESS_IS_VALID)
self.assertEqual(process.GetNumThreads(), 1)
self.assertEqual(process.GetProcessID(), pid)
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