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Posted to dev@qpid.apache.org by "Clifford Jansen (Jira)" <ji...@apache.org> on 2020/06/04 14:44:00 UTC

[jira] [Created] (PROTON-2239) epoll proactor race condition on connection teardown with heartbeats

Clifford Jansen created PROTON-2239:
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             Summary: epoll proactor race condition on connection teardown with heartbeats
                 Key: PROTON-2239
                 URL: https://issues.apache.org/jira/browse/PROTON-2239
             Project: Qpid Proton
          Issue Type: Bug
          Components: proton-c
    Affects Versions: proton-c-0.28.0
            Reporter: Clifford Jansen
            Assignee: Clifford Jansen
         Attachments: xxx.c

If a connection with heartbeats is closed at about the same time to when its idle timeout timer fires, it is possible to have two threads believing they are the last activity on the connection. Both threads proceed to free the same resources leading to memory corruption and various crashes.

The existing code has guards for this exact situation, but there is an Achilles heel somewhere.



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