New submission from Benjamin Peterson <benja...@python.org>:
The UBsan buildbot is failing test_faulthandler. We should either spread some
__attribute__((no_sanitize_undefined)) around or make the tests skip.
======================================================================
FAIL: test_enable_fd (test.test_faulthandler.FaultHandlerTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 274, in test_enable_fd
self.check_fatal_error("""
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 115, in check_fatal_error
self.check_error(code, line_number, fatal_error, **kw)
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 108, in check_error
output, exitcode = self.get_output(code, filename=filename, fd=fd)
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 73, in get_output
self.assertEqual(output, '')
AssertionError: 'UndefinedBehaviorSanitizer:DEADLYSIGNAL\n[2619 chars]TING' !=
''
Diff is 2693 characters long. Set self.maxDiff to None to see it.
======================================================================
FAIL: test_enable_file (test.test_faulthandler.FaultHandlerTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 258, in test_enable_file
self.check_fatal_error("""
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 115, in check_fatal_error
self.check_error(code, line_number, fatal_error, **kw)
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 108, in check_error
output, exitcode = self.get_output(code, filename=filename, fd=fd)
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 68, in get_output
self.assertEqual(output, '')
AssertionError: 'UndefinedBehaviorSanitizer:DEADLYSIGNAL\n[2619 chars]TING' !=
''
Diff is 2693 characters long. Set self.maxDiff to None to see it.
======================================================================
FAIL: test_sigfpe (test.test_faulthandler.FaultHandlerTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 176, in test_sigfpe
self.check_fatal_error("""
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 115, in check_fatal_error
self.check_error(code, line_number, fatal_error, **kw)
File
"/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Lib/test/test_faulthandler.py",
line 110, in check_error
self.assertRegex(output, regex)
AssertionError: Regex didn't match: '^Fatal Python error: Floating point
exception\n\nCurrent thread 0x[0-9a-f]+ \\(most recent call first\\):\n File
"<string>", line 3 in <module>' not found in 'Modules/faulthandler.c:1059:11:
runtime error: division by zero\nFatal Python error: Floating point
exception\n\nCurrent thread 0x00007f14c5e81740 (most recent call first):\n
File "<string>", line 3 in
<module>\nUndefinedBehaviorSanitizer:DEADLYSIGNAL\n==5027==ERROR:
UndefinedBehaviorSanitizer: FPE on unknown address 0x006d000013a3 (pc
0x7f14c5355f9f bp 0x000002f485a0 sp 0x000002f698e8 T5027)\n #0
0x7f14c5355f9e in gsignal (/lib/x86_64-linux-gnu/libpthread.so.0+0x10f9e)\n
#1 0x7f14c53560bf (/lib/x86_64-linux-gnu/libpthread.so.0+0x110bf)\n #2
0x829906 in faulthandler_sigfpe
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/./Modules/faulthandler.c:1059:11\n
#3 0x4707c3 in _PyMethodDef_RawFastCallKeywords
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Objects/call
.c\n #4 0x46e5d1 in _PyCFunction_FastCallKeywords
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Objects/call.c:730:14\n
#5 0x656805 in call_function
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/ceval.c:4570:9\n
#6 0x64b0d6 in _PyEval_EvalFrameDefault
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/ceval.c:3164:23\n
#7 0x6596be in _PyEval_EvalCodeWithName
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/ceval.c:3946:14\n
#8 0x6384ee in PyEval_EvalCodeEx
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/ceval.c:3975:12\n
#9 0x6384ee in PyEval_EvalCode
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/ceval.c:508\n
#10 0x6e816e in run_mod
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/pythonrun.c:1030:9\n
#11 0x6e816e in PyRun_StringFlags
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/pythonrun.c:954\n
#12 0x6e80bc in PyRun_SimpleStringFlags /var
/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Python/pythonrun.c:450:9\n
#13 0x44db44 in pymain_run_command
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Modules/main.c:293:11\n
#14 0x44db44 in pymain_run_python
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Modules/main.c:1600\n
#15 0x44db44 in pymain_main
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Modules/main.c:1758\n
#16 0x44f29b in _Py_UnixMain
/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/Modules/main.c:1795:12\n
#17 0x7f14c4ba72e0 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x202e0)\n #18 0x425499 in _start
(/var/lib/buildbot/clang-ubsan/3.x.gps-clang-ubsan/build/python+0x425499)\n\nUndefinedBehaviorSanitizer
can not provide additional info.\n==5027==ABORTING'
----------------------------------------------------------------------
----------
components: Build
messages: 329797
nosy: benjamin.peterson
priority: normal
severity: normal
status: open
title: test_faulthandler fails under ubsan
versions: Python 3.7, Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue35225>
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