Author serhiy.storchaka
Recipients serhiy.storchaka
Date 2021-09-17.06:56:41
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Message-id <1631861802.59.0.0581666676393.issue45228@roundup.psfhosted.org>
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It can be reproduced when run test.test_socket.J1939Test (omitted in regrtests now, see issue45187) with Address Sanitizer. See for example https://github.com/python/cpython/pull/28317/checks?check_run_id=3625390397.

It can be reproduced when run test.test_socket.J1939Test with unittest:

$ ./python -m unittest -v test.test_socket -k J1939Test

See J1939Test.log for output.

The cause is using PyArg_ParseTuple() with format unit "k" (unsigned long) and variable of type uint32_t. PyArg_ParseTuple() should only be used with native integer types (short, int, long, long long), it does not support support types of fixed size (uint16_t, uint32_t, uint64_t).
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Date User Action Args
2021-09-17 06:56:42serhiy.storchakasetrecipients: + serhiy.storchaka
2021-09-17 06:56:42serhiy.storchakasetmessageid: <1631861802.59.0.0581666676393.issue45228@roundup.psfhosted.org>
2021-09-17 06:56:42serhiy.storchakalinkissue45228 messages
2021-09-17 06:56:41serhiy.storchakacreate