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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"syslog issues","articleBody":"There are several issues with corner cases in `syslog.openlog()`.\r\n\r\n* `syslog_get_argv()` swallows exceptions, but not in all cases.\r\n* if `ident` is non UTF-8 encodable, `syslog.openlog()` fails after setting the global reference to `ident`. Now the C string saved internally in the previous call to `openlog()` points to the freed memory.\r\n* `PySys_Audit()` can crash if `ident` is NULL.\r\n* There may be a race condition with `syslog.syslog()`, because the global reference to `ident` is decrefed before setting the new value.\r\n\r\nAnd, since `syslog.syslog()` releases the GIL, there may be a race condition `syslog.syslog()` with `syslog.openlog()` and `syslog.closelog()` which can decref the global reference to `ident`.\r\n\r\nP.S. @noamcohen97 noticed yet one issue in `syslog.syslog()` (potential returning a value from a function while an exception is set https://github.com/python/cpython/pull/95012#discussion_r929558676) and fixed it.","author":{"url":"https://github.com/serhiy-storchaka","@type":"Person","name":"serhiy-storchaka"},"datePublished":"2022-07-20T07:12:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/95041/cpython/issues/95041"}