[root@guava-s10433 tmp]# gdb /opt/couchbase/bin/memcached core.memcached.28210 GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1) Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /opt/couchbase/bin/memcached...done. [New Thread 28221] [New Thread 28223] [New Thread 28331] [New Thread 28224] [New Thread 28222] [New Thread 28225] [New Thread 28330] [New Thread 28328] [New Thread 28210] [New Thread 28218] [New Thread 28332] [New Thread 28216] [New Thread 28329] Reading symbols from /opt/couchbase/bin/../lib/memcached/libmcd_util.so.1.0.0...done. Loaded symbols for /opt/couchbase/bin/../lib/memcached/libmcd_util.so.1.0.0 Reading symbols from /opt/couchbase/bin/../lib/libcbsasl.so.1.1.1...done. Loaded symbols for /opt/couchbase/bin/../lib/libcbsasl.so.1.1.1 Reading symbols from /opt/couchbase/bin/../lib/libplatform.so.0.1.0...done. Loaded symbols for /opt/couchbase/bin/../lib/libplatform.so.0.1.0 Reading symbols from /opt/couchbase/bin/../lib/libcJSON.so.1.0.0...done. Loaded symbols for /opt/couchbase/bin/../lib/libcJSON.so.1.0.0 Reading symbols from /opt/couchbase/bin/../lib/libJSON_checker.so...done. Loaded symbols for /opt/couchbase/bin/../lib/libJSON_checker.so Reading symbols from /opt/couchbase/bin/../lib/libsnappy.so.1...done. Loaded symbols for /opt/couchbase/bin/../lib/libsnappy.so.1 Reading symbols from /opt/couchbase/bin/../lib/libtcmalloc_minimal.so.4...done. Loaded symbols for /opt/couchbase/bin/../lib/libtcmalloc_minimal.so.4 Reading symbols from /opt/couchbase/bin/../lib/libevent_core-2.0.so.5...done. Loaded symbols for /opt/couchbase/bin/../lib/libevent_core-2.0.so.5 Reading symbols from /usr/lib64/libssl.so.10...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libssl.so.10 Reading symbols from /usr/lib64/libcrypto.so.10...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libcrypto.so.10 Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done. [Thread debugging using libthread_db enabled] Loaded symbols for /lib64/libpthread.so.0 Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libdl.so.2 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/librt.so.1 Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libstdc++.so.6 Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib64/libm.so.6 Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libgcc_s.so.1 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib64/libc.so.6 Reading symbols from /lib64/libgssapi_krb5.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libgssapi_krb5.so.2 Reading symbols from /lib64/libkrb5.so.3...(no debugging symbols found)...done. Loaded symbols for /lib64/libkrb5.so.3 Reading symbols from /lib64/libcom_err.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libcom_err.so.2 Reading symbols from /lib64/libk5crypto.so.3...(no debugging symbols found)...done. Loaded symbols for /lib64/libk5crypto.so.3 Reading symbols from /lib64/libz.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libz.so.1 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /lib64/libkrb5support.so.0...(no debugging symbols found)...done. Loaded symbols for /lib64/libkrb5support.so.0 Reading symbols from /lib64/libkeyutils.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libkeyutils.so.1 Reading symbols from /lib64/libresolv.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libresolv.so.2 Reading symbols from /lib64/libselinux.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libselinux.so.1 Reading symbols from /opt/couchbase/lib/memcached/stdin_term_handler.so...done. Loaded symbols for /opt/couchbase/lib/memcached/stdin_term_handler.so Reading symbols from /opt/couchbase/lib/memcached/file_logger.so...done. Loaded symbols for /opt/couchbase/lib/memcached/file_logger.so Reading symbols from /opt/couchbase/lib/memcached/bucket_engine.so...done. Loaded symbols for /opt/couchbase/lib/memcached/bucket_engine.so Reading symbols from /opt/couchbase/lib/memcached/ep.so...done. Loaded symbols for /opt/couchbase/lib/memcached/ep.so Reading symbols from /opt/couchbase/lib/libcouchstore.so...done. Loaded symbols for /opt/couchbase/lib/libcouchstore.so Reading symbols from /opt/couchbase/lib/libdirutils.so.0.1.0...done. Loaded symbols for /opt/couchbase/lib/libdirutils.so.0.1.0 Reading symbols from /opt/couchbase/lib/libv8.so...done. Loaded symbols for /opt/couchbase/lib/libv8.so Reading symbols from /opt/couchbase/lib/libicui18n.so.44...done. Loaded symbols for /opt/couchbase/lib/libicui18n.so.44 Reading symbols from /opt/couchbase/lib/libicuuc.so.44...done. Loaded symbols for /opt/couchbase/lib/libicuuc.so.44 Reading symbols from /opt/couchbase/lib/libicudata.so.44...(no debugging symbols found)...done. Loaded symbols for /opt/couchbase/lib/libicudata.so.44 Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'. Program terminated with signal 11, Segmentation fault. #0 0x0000005600000000 in ?? () Missing separate debuginfos, use: debuginfo-install couchbase-server-3.0.0-695.x86_64 (gdb) t a a bt Thread 13 (Thread 0x7fe44b429700 (LWP 28329)): #0 0x00007fe455569e53 in pread64 () from /lib64/libpthread.so.0 #1 0x00007fe44d7262a1 in couch_pread (errinfo=0x7135da0, handle=, buf=0x6f7c831, nbyte=8192, offset=8192) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/couchstore/src/os.c:43 #2 0x00007fe44d9f5659 in cfs_pread (errinfo=0x7135da0, h=0x8997300, buf=0x6f7c831, sz=8192, off=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-fs-stats.cc:104 #3 0x00007fe44d713e4f in load_buffer_from (errinfo=0x7135da0, handle=0x8f5d570, buf=, nbyte=2, offset=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/couchstore/src/iobuffer.cc:167 #4 buffered_pread (errinfo=0x7135da0, handle=0x8f5d570, buf=, nbyte=2, offset=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/couchstore/src/iobuffer.cc:313 #5 0x00007fe44d70f46c in find_header_at_pos (db=0x7135d80, pos=8192) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/couchstore/src/couch_db.cc:51 #6 0x00007fe44d70f6f8 in find_header (db=0x7135d80, start_pos=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/couchstore/src/couch_db.cc:97 #7 0x00007fe44d70faf4 in couchstore_open_db_ex (filename=0x8b8c5f8 "/opt/couchbase/var/lib/couchbase/data/default/920.couch.1", flags=, ops=0x62112e0, pDb=0x7fe44b4289f8) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/couchstore/src/couch_db.cc:260 #8 0x00007fe44d9e8064 in CouchKVStore::openDB (this=0x62110c0, vbucketId=920, fileRev=1, db=0x7fe44b4289f8, options=1, newFileRev=0x7fe44b4289f0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-kvstore.cc:1266 #9 0x00007fe44d9eadab in CouchKVStore::setVBucketState (this=0x62110c0, vbucketId=920, vbstate=..., vb_change_type=1, kvcb=0x7fe44b428c10, notify=true) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-kvstore.cc:935 #10 0x00007fe44d9eb689 in CouchKVStore::snapshotVBuckets (this=0x62110c0, vbstates=std::map with 68 elements = {...}, cb=0x7fe44b428c10) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-kvstore.cc:839 #11 0x00007fe44d95be70 in EventuallyPersistentStore::snapshotVBuckets (this=0x61a2240, priority=..., shardId=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/ep.cc:856 #12 0x00007fe44d9b730f in VBSnapshotTask::run (this=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/tasks.cc:44 #13 0x00007fe44d999fa9 in ExecutorThread::run (this=0x19287d0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:93 #14 0x00007fe44d99a30d in launch_executor_thread (arg=0x19287d0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:33 #15 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0bf0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #16 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #17 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 12 (Thread 0x7fe453063700 (LWP 28216)): #0 0x00007fe4546f760d in read () from /lib64/libc.so.6 #1 0x00007fe45468df68 in _IO_new_file_underflow () from /lib64/libc.so.6 #2 0x00007fe45468fa6e in _IO_default_uflow_internal () from /lib64/libc.so.6 #3 0x00007fe45468414a in _IO_getline_info_internal () from /lib64/libc.so.6 #4 0x00007fe454682fa9 in fgets () from /lib64/libc.so.6 #5 0x00007fe453064911 in check_stdin_thread (arg=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/memcached/extensions/daemon/stdin_check.c:38 #6 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0080) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #7 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #8 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 11 (Thread 0x7fe449626700 (LWP 28332)): #0 0x00007fe4546fb253 in poll () from /lib64/libc.so.6 #1 0x00007fe44d9f8815 in CouchNotifier::waitForReadable (this=0x756a000, tryOnce=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-notifier.cc:719 #2 0x00007fe44d9f8de0 in waitOnce (this=0x756a000, vbs=..., file_version=1, header_offset=4096, cb=...) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-notifier.cc:769 #3 CouchNotifier::notify_update (this=0x756a000, vbs=..., file_version=1, header_offset=4096, cb=...) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-notifier.cc:848 #4 0x00007fe44d9eb10e in CouchKVStore::setVBucketState (this=0x63cf040, vbucketId=917, vbstate=..., vb_change_type=1, kvcb=0x7fe449625c10, notify=true) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-kvstore.cc:971 #5 0x00007fe44d9eb689 in CouchKVStore::snapshotVBuckets (this=0x63cf040, vbstates=std::map with 69 elements = {...}, cb=0x7fe449625c10) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/couch-kvstore/couch-kvstore.cc:839 #6 0x00007fe44d95be70 in EventuallyPersistentStore::snapshotVBuckets (this=0x61a2240, priority=..., shardId=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/ep.cc:856 ---Type to continue, or q to quit--- #7 0x00007fe44d9b730f in VBSnapshotTask::run (this=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/tasks.cc:44 #8 0x00007fe44d999fa9 in ExecutorThread::run (this=0x1928af0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:93 #9 0x00007fe44d99a30d in launch_executor_thread (arg=0x1928af0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:33 #10 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0bc0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #11 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #12 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 10 (Thread 0x7fe45245f700 (LWP 28218)): #0 0x00007fe4555667bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007fe45684ba3b in cb_cond_timedwait (cond=0x7fe452662a20, mutex=0x7fe4526629e0, ms=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:156 #2 0x00007fe452461f38 in logger_thead_main (arg=0x190cb00) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/memcached/extensions/loggers/file_logger.c:372 #3 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0090) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #4 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 9 (Thread 0x7fe4570627e0 (LWP 28210)): #0 0x00007fe454704f03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fe455de55c6 in epoll_dispatch (base=0x6188000, tv=) at epoll.c:404 #2 0x00007fe455dd0e24 in event_base_loop (base=0x6188000, flags=) at event.c:1558 #3 0x000000000040f119 in main (argc=, argv=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/memcached/daemon/memcached.c:8724 Thread 8 (Thread 0x7fe44e64c700 (LWP 28328)): #0 0x00007fe4546c8b8d in nanosleep () from /lib64/libc.so.6 #1 0x00007fe4546fdd64 in usleep () from /lib64/libc.so.6 #2 0x00007fe44d9987f5 in updateStatsThread (arg=0x190c8c0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/memory_tracker.cc:36 #3 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0200) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #4 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 7 (Thread 0x7fe44aa28700 (LWP 28330)): #0 0x00007fe4555667bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007fe45684ba3b in cb_cond_timedwait (cond=0x61dede0, mutex=0x61deda8, ms=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:156 #2 0x00007fe44d98ea8f in SyncObject::wait (this=0x61deda0, tv=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/syncobject.h:74 #3 0x00007fe44d98afb0 in ExecutorPool::trySleep (this=0x61ded80, t=..., now=...) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorpool.cc:177 #4 0x00007fe44d98b2d4 in ExecutorPool::nextTask (this=0x61ded80, t=..., tick=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorpool.cc:151 #5 0x00007fe44d999f0a in ExecutorThread::run (this=0x1928780) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:77 #6 0x00007fe44d99a30d in launch_executor_thread (arg=0x1928780) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:33 #7 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0bd0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #8 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #9 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 6 (Thread 0x7fe44f04d700 (LWP 28225)): #0 0x00007fe454704f03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fe455de55c6 in epoll_dispatch (base=0x6188780, tv=) at epoll.c:404 #2 0x00007fe455dd0e24 in event_base_loop (base=0x6188780, flags=) at event.c:1558 #3 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0160) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #4 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 5 (Thread 0x7fe450e50700 (LWP 28222)): #0 0x00007fe454704f03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fe455de55c6 in epoll_dispatch (base=0x6188280, tv=) at epoll.c:404 #2 0x00007fe455dd0e24 in event_base_loop (base=0x6188280, flags=) at event.c:1558 #3 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0190) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 ---Type to continue, or q to quit--- #4 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x7fe44fa4e700 (LWP 28224)): #0 0x00007fe454704f03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fe455de55c6 in epoll_dispatch (base=0x6188a00, tv=) at epoll.c:404 #2 0x00007fe455dd0e24 in event_base_loop (base=0x6188a00, flags=) at event.c:1558 #3 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0170) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #4 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x7fe44a027700 (LWP 28331)): #0 0x00007fe4555667bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007fe45684ba3b in cb_cond_timedwait (cond=0x61dede0, mutex=0x61deda8, ms=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:156 #2 0x00007fe44d98ea8f in SyncObject::wait (this=0x61deda0, tv=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/syncobject.h:74 #3 0x00007fe44d98afb0 in ExecutorPool::trySleep (this=0x61ded80, t=..., now=...) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorpool.cc:177 #4 0x00007fe44d98b1d8 in ExecutorPool::nextTask (this=0x61ded80, t=..., tick=) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorpool.cc:135 #5 0x00007fe44d999f0a in ExecutorThread::run (this=0x1928b40) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:77 #6 0x00007fe44d99a30d in launch_executor_thread (arg=0x1928b40) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/executorthread.cc:33 #7 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0be0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #8 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #9 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x7fe45044f700 (LWP 28223)): #0 0x00007fe454704f03 in epoll_wait () from /lib64/libc.so.6 #1 0x00007fe455de55c6 in epoll_dispatch (base=0x6188c80, tv=) at epoll.c:404 #2 0x00007fe455dd0e24 in event_base_loop (base=0x6188c80, flags=) at event.c:1558 #3 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c0180) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #4 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007fe45470490d in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x7fe451851700 (LWP 28221)): #0 0x0000005600000000 in ?? () #1 0x00007fe44d9bfa6a in UprConsumer::getNextItem (this=0x7f744c0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/upr-consumer.cc:557 #2 0x00007fe44d9bfb9f in UprConsumer::step (this=0x7f744c0, producers=0x621120) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/upr-consumer.cc:361 #3 0x00007fe44d96e749 in EvpUprStep (handle=, cookie=0x6039200, producers=0x621120) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/ep-engine/src/ep_engine.cc:1329 #4 0x00007fe45185a0e6 in upr_step (handle=, cookie=0x6039200, producers=0x621120) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/memcached/engines/bucket_engine/bucket_engine.c:2194 #5 0x00000000004137cd in ship_upr_log (c=0x6039200) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/memcached/daemon/memcached.c:3454 #6 conn_ship_log (c=0x6039200) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/memcached/daemon/memcached.c:6794 #7 0x0000000000409c0d in event_handler (fd=, which=, arg=0x6039200) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/memcached/daemon/memcached.c:7237 #8 0x00007fe455dd0f1c in event_process_active_single_queue (base=0x6188500, flags=) at event.c:1308 #9 event_process_active (base=0x6188500, flags=) at event.c:1375 #10 event_base_loop (base=0x6188500, flags=) at event.c:1572 #11 0x00007fe45684bcbf in platform_thread_wrap (arg=0x18c01a0) at /home/buildbot/buildbot_slave/centos-6-x64-300-builder/build/build/platform/src/cb_pthreads.c:19 #12 0x00007fe455562851 in start_thread () from /lib64/libpthread.so.0 #13 0x00007fe45470490d in clone () from /lib64/libc.so.6