1""" 2Test the AddressSanitizer runtime support for report breakpoint and data extraction. 3""" 4 5 6 7import json 8import lldb 9from lldbsuite.test.decorators import * 10from lldbsuite.test.lldbtest import * 11from lldbsuite.test import lldbutil 12 13 14class AsanTestReportDataCase(TestBase): 15 16 mydir = TestBase.compute_mydir(__file__) 17 18 @skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default 19 @expectedFailureNetBSD 20 @skipUnlessAddressSanitizer 21 @skipIf(archs=['i386'], bugnumber="llvm.org/PR36710") 22 def test(self): 23 self.build() 24 self.asan_tests() 25 26 def setUp(self): 27 # Call super's setUp(). 28 TestBase.setUp(self) 29 self.line_malloc = line_number('main.c', '// malloc line') 30 self.line_malloc2 = line_number('main.c', '// malloc2 line') 31 self.line_free = line_number('main.c', '// free line') 32 self.line_breakpoint = line_number('main.c', '// break line') 33 self.line_crash = line_number('main.c', '// BOOM line') 34 self.col_crash = 16 35 36 def asan_tests(self): 37 target = self.createTestTarget() 38 39 self.registerSanitizerLibrariesWithTarget(target) 40 41 self.runCmd("run") 42 43 stop_reason = self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason() 44 if stop_reason == lldb.eStopReasonExec: 45 # On OS X 10.10 and older, we need to re-exec to enable 46 # interceptors. 47 self.runCmd("continue") 48 49 self.expect( 50 "thread list", 51 "Process should be stopped due to ASan report", 52 substrs=[ 53 'stopped', 54 'stop reason = Use of deallocated memory']) 55 56 self.assertEqual( 57 self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason(), 58 lldb.eStopReasonInstrumentation) 59 60 self.expect("bt", "The backtrace should show the crashing line", 61 substrs=['main.c:%d:%d' % (self.line_crash, self.col_crash)]) 62 63 self.expect( 64 "thread info -s", 65 "The extended stop info should contain the ASan provided fields", 66 substrs=[ 67 "access_size", 68 "access_type", 69 "address", 70 "description", 71 "heap-use-after-free", 72 "pc", 73 ]) 74 75 output_lines = self.res.GetOutput().split('\n') 76 json_line = '\n'.join(output_lines[2:]) 77 data = json.loads(json_line) 78 self.assertEqual(data["description"], "heap-use-after-free") 79 self.assertEqual(data["instrumentation_class"], "AddressSanitizer") 80 self.assertEqual(data["stop_type"], "fatal_error") 81 82 # now let's try the SB API 83 process = self.dbg.GetSelectedTarget().process 84 thread = process.GetSelectedThread() 85 86 s = lldb.SBStream() 87 self.assertTrue(thread.GetStopReasonExtendedInfoAsJSON(s)) 88 s = s.GetData() 89 data2 = json.loads(s) 90 self.assertEqual(data, data2) 91