Rob Springer created QPID-4168:
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Summary: Unhandled [rare] error condition in EpollPoller.cpp
Key: QPID-4168
URL: https://issues.apache.org/jira/browse/QPID-4168
Project: Qpid
Issue Type: Bug
Components: C++ Client
Affects Versions: 0.16
Environment: RHEL 6.2 (probably all POSIX targets)
Reporter: Rob Springer
Priority: Minor
There was a bug in one of our programs wherein a thread could call close() on
what was effectively a random socket.
Occasionally, it would happen to call close() on the alwaysReadableFd
registered in the PollerPrivate constructor, which would result in an epoll
event for that FD to be returned in the call to epoll_wait() on line 568. It'd
then try to dereference the event's "ptr" element (which was set to 0x1 on
registration for that FD), which would lead to a segfault.
It's worth reiterating that the triggering bug is absolutely not in Qpid, so
this isn't a core functionality issue - it's more of a graceful handling of a
unexpected error condition.
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