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https://issues.apache.org/jira/browse/MESOS-5748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15356216#comment-15356216
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Joseph Wu edited comment on MESOS-5748 at 6/30/16 1:11 AM:
-----------------------------------------------------------
Backport-able fix: https://reviews.apache.org/r/49416/
Complete fix + cleanup: https://reviews.apache.org/r/49404/
was (Author: kaysoky):
A fix: https://reviews.apache.org/r/49404/
> Potential segfault in `link` and `send` when linking to a remote process
> ------------------------------------------------------------------------
>
> Key: MESOS-5748
> URL: https://issues.apache.org/jira/browse/MESOS-5748
> Project: Mesos
> Issue Type: Bug
> Components: libprocess
> Affects Versions: 0.22.0, 0.23.0, 0.24.0, 0.25.0, 0.26.0, 0.27.0, 0.28.0
> Reporter: Joseph Wu
> Assignee: Joseph Wu
> Labels: libprocess, mesosphere
> Fix For: 1.0.0
>
>
> There is a race in the SocketManager, between a remote {{link}} and
> disconnection of the underlying socket.
> We potentially segfault here:
> https://github.com/apache/mesos/blob/215e79f571a989e998488077d713c28c7528926e/3rdparty/libprocess/src/process.cpp#L1512
> {{\*socket}} dereferences the shared pointer underpinning the {{Socket*}}
> object. However, the code above this line actually has ownership of the
> pointer:
> https://github.com/apache/mesos/blob/215e79f571a989e998488077d713c28c7528926e/3rdparty/libprocess/src/process.cpp#L1494-L1499
> If the socket dies during the link, the {{ignore_recv_data}} may delete the
> Socket underneath {{link}}:
> https://github.com/apache/mesos/blob/215e79f571a989e998488077d713c28c7528926e/3rdparty/libprocess/src/process.cpp#L1399-L1411
> ----
> The same race exists for {{send}}.
> This race was discovered while running a new test in repetition:
> https://reviews.apache.org/r/49175/
> On OSX, I hit the race consistently every 500-800 repetitions:
> {code}
> 3rdparty/libprocess/libprocess-tests
> --gtest_filter="ProcessRemoteLinkTest.RemoteLink" --gtest_break_on_failure
> --gtest_repeat=1000
> {code}
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