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src/linux/ns.hpp Lines 246 (patched) <https://reviews.apache.org/r/63074/#comment265377> There might be a race when `stat` has failed, but a new process with the same PID is launched before `os::exist` is called. This race reproduced when two pre-exec hooks was started. - Andrei Budnik On Oct. 17, 2017, 1:44 p.m., Andrei Budnik wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/63074/ > ----------------------------------------------------------- > > (Updated Oct. 17, 2017, 1:44 p.m.) > > > Review request for mesos, Alexander Rukletsov, Jie Yu, and Kevin Klues. > > > Bugs: MESOS-7504 > https://issues.apache.org/jira/browse/MESOS-7504 > > > Repository: mesos > > > Description > ------- > > Previously, `getns` checked existence of process's pid before trying to > `stat` the namespace file. If the pid didn't exist, then it returned a > failure. > > Now, `getns` checks existence of process's pid only on failure of > `stat` for the namespace file. If the pid doesn't exist, then it returns > `None()`. > > > Diffs > ----- > > src/linux/ns.hpp e96116343b132ff4aae36c7b3c1b0e99c41246af > src/slave/containerizer/mesos/utils.cpp > ec6d6c79b0f93cabe880cd697094c20e999af4d1 > src/tests/containerizer/isolator_tests.cpp > 5072bafabc0e37bc756588b88e4d9f8a8c84d337 > src/tests/containerizer/ns_tests.cpp > 2e28139d241e5e37c8fd0f8b4531c3d271727c8d > > > Diff: https://reviews.apache.org/r/63074/diff/1/ > > > Testing > ------- > > make check > > > Thanks, > > Andrei Budnik > >
