Author jshelly
Recipients jshelly
Date 2019-07-11.15:12:51
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Message-id <1562857971.79.0.0137287316017.issue37565@roundup.psfhosted.org>
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CentOS 7.6, running Linux gl-build.arc-ts.umich.edu 3.10.0-957.10.1.el7.x86_64 #1 SMP Mon Mar 18 15:06:45 UTC 2019 x86_64 on Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz.

Using gcc 8.2.0 compiled from source to build python 3.7.4 from source, make test fails with the following errors:

```
0:00:22 load avg: 3.12 [402/416/1] test_faulthandler failed
test test_faulthandler failed -- Traceback (most recent call last):
  File "/tmp/shellysw/build/Python-3.7.4/Lib/test/test_faulthandler.py", line 724, in test_register_chain
    self.check_register(chain=True)
  File "/tmp/shellysw/build/Python-3.7.4/Lib/test/test_faulthandler.py", line 702, in check_register
    self.assertEqual(exitcode, 0)
AssertionError: -11 != 0
```

I found a similar error reported in RedHat bugzilla (1687171) and tried running the script provided by Victor Stinner, and this closed issue on GitHub seems like it might be related?
#32 because of the Skylake chipset.

Script:
```
import faulthandler, signal, os

def handler(signum, frame):
    handler.called = True
handler.called = False

faulthandler.enable()

signum = signal.SIGUSR1
signal.signal(signum, handler)
faulthandler.register(signum, chain=True)
os.kill(os.getpid(), signum)
print("called", handler.called)
```

It produced a segmentation fault. I also ran that script using the python 3.6.6 binary that came installed with centos and it also produced a segmentation fault as well.
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2019-07-11 15:12:51jshellysetrecipients: + jshelly
2019-07-11 15:12:51jshellysetmessageid: <1562857971.79.0.0137287316017.issue37565@roundup.psfhosted.org>
2019-07-11 15:12:51jshellylinkissue37565 messages
2019-07-11 15:12:51jshellycreate