Critical Description
The mishandling of errors in the jni user-to-groups mapping modules can cause segmentation faults in subsequent calls. Here are the bugs:
1) If hadoop_user_info_fetch() returns an error code that is not ENOENT, the error may not be handled at all. This bug was found by cnauroth.
2) In hadoop_user_info_fetch() and hadoop_group_info_fetch(), the global errno is directly used. This is not thread-safe and could be the cause of some failures that disappeared after enabling the big lookup lock.
3) In the above methods, there is no limit on retries.
Attachments
Attachments
Issue Links
- breaks
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HADOOP-10527 Fix incorrect return code and allow more retries on EINTR
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- Closed
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