URL:
<http://savannah.cern.ch/bugs/?82132>
Summary: CheckHostDomain in XrdClientConn is not thread-safe
Project: XROOTD
Submitted by: abh
Submitted on: 2011-05-11 22:32
Severity: 4 - Important
Priority: 5 - Normal
Status: None
Privacy: Public
Assigned to: ljanyst
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Fixed by commit(s):
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Details:
In method CheckHostDomain() in XrdClientConn.cc is called by Open() in
XrdClient without holding a global mutex. Unfortunately, CheckHostDomain()
may try to add entries to a static hash table. This invariably causes
corrupted memory with loops, hangs, or crashes.
Suggest fix; which was tried by LSST and appears to work, is to declare an
XrdSysMutexHelper object using a static mutex at entry to CheckHostDomain().
This will serialize access to the static hash table and solve the problem.
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