Details
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Bug
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Resolution: Done
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Major - P3
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2.6.6
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None
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Replication
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Fully Compatible
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ALL
Description
Following a reconfig, a 2.6.6 mongod crashed with the following message:
2015-02-27T19:55:54.403+0000 [rsSync] SEVERE: Invalid access at address: 0
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2015-02-27T19:55:54.411+0000 [conn36630502] SEVERE: Invalid access at address: 0
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2015-02-27T19:55:54.454+0000 [rsSync] SEVERE: Got signal: 11 (Segmentation fault).
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Backtrace:0x11fca91 0x11fbe6e 0x11fbf5f 0x7fb4a25d0130 0xec01c1 0xec0b7a 0xec0cb0 0xec0faa 0x1241429 0x7fb4a25c8df3 0x7fb4a18cf01d
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/usr/local/mongodb/bin/mongod(_ZN5mongo15printStackTraceERSo+0x21) [0x11fca91]
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/usr/local/mongodb/bin/mongod() [0x11fbe6e]
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/usr/local/mongodb/bin/mongod() [0x11fbf5f]
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/lib64/libpthread.so.0(+0xf130) [0x7fb4a25d0130]
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/usr/local/mongodb/bin/mongod(_ZN5mongo7replset8SyncTail16oplogApplicationEv+0x7b1) [0xec01c1]
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/usr/local/mongodb/bin/mongod(_ZN5mongo11ReplSetImpl11_syncThreadEv+0x14a) [0xec0b7a]
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/usr/local/mongodb/bin/mongod(_ZN5mongo11ReplSetImpl10syncThreadEv+0x30) [0xec0cb0]
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/usr/local/mongodb/bin/mongod(_ZN5mongo15startSyncThreadEv+0xaa) [0xec0faa]
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/usr/local/mongodb/bin/mongod() [0x1241429]
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/lib64/libpthread.so.0(+0x7df3) [0x7fb4a25c8df3]
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/lib64/libc.so.6(clone+0x6d) [0x7fb4a18cf01d]
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Symbolized:
mongo::printStackTrace(std::ostream&)
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/util/stacktrace.cpp:304
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abruptQuit
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/util/signal_handlers.cpp:107
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abruptQuitWithAddrSignal
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/util/signal_handlers.cpp:201
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??
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??:0
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std::vector<mongo::ReplSetConfig::MemberCfg, std::allocator<mongo::ReplSetConfig::MemberCfg> >::end() const
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/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_vector.h:360
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std::vector<mongo::ReplSetConfig::MemberCfg, std::allocator<mongo::ReplSetConfig::MemberCfg> >::size() const
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/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_vector.h:402
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mongo::replset::SyncTail::oplogApplication()
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/db/repl/rs_sync.cpp:431
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mongo::ReplSetImpl::_syncThread()
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/db/repl/rs_sync.cpp:773
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mongo::ReplSetImpl::syncThread()
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/db/repl/rs_sync.cpp:818
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mongo::TSP<mongo::Client>::get() const
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/db/repl/rs_sync.cpp:832
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cc
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/db/client.h:252
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mongo::startSyncThread()
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/srv/10gen/mci-exec/mci/shell/src/src/mongo/db/repl/rs_sync.cpp:833
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thread_proxy
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/srv/10gen/mci-exec/mci/shell/src/src/third_party/boost/libs/thread/src/pthread/thread.cpp:133
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It appears that this line is trying to access theReplSet->config().members.size() while the config pointer was NULL.