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https://issues.apache.org/jira/browse/MESOS-4711?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joris Van Remoortere updated MESOS-4711:
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Comment: was deleted
(was: {code}
commit 2297a3cf8db2b88860bc839cf934894b1d09dbbc
Author: Alexander Rojas <[email protected]>
Date: Fri Feb 26 14:38:05 2016 -0800
Removed race condition from libevent based poll implementation.
Under certains circumstances, the future returned by poll is discarded
right after the event is triggered, this causes the event callback to be
called before the discard callback which results in an abort signal
being raised by the libevent library.
Review: https://reviews.apache.org/r/43799/
{code})
> Race condition in libevent poll implementation causes crash
> -----------------------------------------------------------
>
> Key: MESOS-4711
> URL: https://issues.apache.org/jira/browse/MESOS-4711
> Project: Mesos
> Issue Type: Bug
> Components: libprocess
> Affects Versions: 0.28.0
> Environment: CentOS 6.7 running in VirtualBox
> Reporter: Alexander Rojas
> Assignee: Alexander Rojas
> Labels: mesosphere
> Fix For: 0.28.0, 0.27.2
>
>
> The issue first arose in MESOS-3271, but can be reproduced every time by
> using the mentioned environment and running:
> {noformat}
> sudo ./bin/mesos-tests.sh
> --gtest_filter="MemoryPressureMesosTest.CGROUPS_ROOT_SlaveRecovery"
> --gtest_repeat=1000
> {noformat}
> The problem can be traced back to
> [{{libevent_poll.cpp}}|https://github.com/apache/mesos/blob/3539b7a0e15b594148308319bf052d28b1429b98/3rdparty/libprocess/src/libevent_poll.cpp].
> If the event is triggered and the the future associated with the event is
> discarded, the situation arises in which
> [{{pollCallback()}}|https://github.com/apache/mesos/blob/3539b7a0e15b594148308319bf052d28b1429b98/3rdparty/libprocess/src/libevent_poll.cpp#L33]
> starts executing just early enough to finish before
> [{{pollDiscard()}}|https://github.com/apache/mesos/blob/3539b7a0e15b594148308319bf052d28b1429b98/3rdparty/libprocess/src/libevent_poll.cpp#L53]
> executes. If that happens, {{pollCallback()}} deletes the poll object and
> {{pollDiscard()}} is left with a dangling pointer which crashes when it
> executes the line {{event_active(ev, EV_READ, 0);}}.
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