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From "Pavel Moravec (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-6232) [C++ broker] Linearstore segfaults when ulimit prevents creating new file in EFP
Date Tue, 18 Nov 2014 14:58:35 GMT
Pavel Moravec created QPID-6232:
-----------------------------------

             Summary: [C++ broker] Linearstore segfaults when ulimit prevents creating new
file in EFP
                 Key: QPID-6232
                 URL: https://issues.apache.org/jira/browse/QPID-6232
             Project: Qpid
          Issue Type: Bug
          Components: C++ Broker
    Affects Versions: 0.30
            Reporter: Pavel Moravec
            Assignee: Pavel Moravec
            Priority: Minor


When EFP fails to open a new file (i.e. due to ulimit to nofiles), linearstore segfaults with
backtrace:

#0  0x00000034d429c1b9 in std::basic_string<char, std::char_traits<char>, std::allocator<char>
>::rfind(char, unsigned long) const () from /usr/lib64/libstdc++.so.6
#1  0x00007fe466719b50 in qpid::linearstore::journal::EmptyFilePool::takeEmptyFile (this=0xddb540,
destDirectory="/var/lib/qpidd/qls/jrnl/Durable_4_8")
    at /usr/src/debug/qpid-0.22/cpp/src/qpid/linearstore/journal/EmptyFilePool.cpp:109
#2  0x00007fe4667327a0 in qpid::linearstore::journal::LinearFileController::pullEmptyFileFromEfp
(this=0x3478288)
    at /usr/src/debug/qpid-0.22/cpp/src/qpid/linearstore/journal/LinearFileController.cpp:239
#3  0x00007fe466748bfd in qpid::linearstore::journal::wmgr::flush_check (this=0x34784f8, res=@0x7fe462f55f90,
cont=@0x7fe462f55f9f, done=@0x7fe462f55f9c)
    at /usr/src/debug/qpid-0.22/cpp/src/qpid/linearstore/journal/wmgr.cpp:651
#4  0x00007fe46674c134 in qpid::linearstore::journal::wmgr::enqueue (this=0x34784f8, data_buff=<value
optimized out>, tot_data_len=177, this_data_len=<value optimized out>, dtokp=
    0x7fe3e583ed60, xid_ptr=0x0, xid_len=0, tpc_flag=false, transient=false, external=false)
at /usr/src/debug/qpid-0.22/cpp/src/qpid/linearstore/journal/wmgr.cpp:223

The problem is EmptyFilePool::overwriteFileContents does not react anyhow if ofs.good() is
false.



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