GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-120.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/couchbase/bin/memcached...Reading symbols from /usr/lib/debug/opt/couchbase/bin/memcached-7.1.0-2211.x86_64.debug...done.
done.
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Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'.
#0  0x00007f70c0cdf3d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
55	  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
#0  0x00007f70c0cdf3d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
        resultvar = 0
        pid = 6207
        selftid = 6227
#1  0x00007f70c0ce0ac8 in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0 <repeats 15 times>, 140121919628064}}, sa_flags = -1079626480, sa_restorer = 0x0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f70c16377f2 in __gnu_cxx::__verbose_terminate_handler() () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/vterminate.cc:50
        terminating = false
        t = <optimized out>
#3  0x0000000000b4448b in backtrace_terminate_handler() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:88
No locals.
#4  0x00007f70c16358f6 in __cxxabiv1::__terminate(void (*)()) () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:48
No locals.
#5  0x00007f70c1635961 in std::terminate () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:58
No locals.
#6  0x00007f70c1635bf4 in __cxxabiv1::__cxa_throw (obj=<optimized out>, tinfo=0x108ee10 <typeinfo for std::exception>, dest=0x7f70c1634b30 <std::exception::~exception()>) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_throw.cc:95
        globals = <optimized out>
        header = 0x7f7094000f90
#7  0x00000000004cf077 in EPVBucket::setNumTotalItems (this=0x7f704a578700, kvstore=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:1198
        e = @0x7f7094000f50: <error reading variable>
        itemCount = 18446744073709551569
        vbState = 0x7f7088713f00
        vbItemCount1 = <optimized out>
        systemEvents = 0
        vbItemCount2 = 18446744073709551569
#8  0x0000000000749401 in Warmup::estimateDatabaseItemCount (this=0x7f7050b17900, shardId=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvshard.h:72
        epVb = @0x7f704a578700: <error reading variable>
        vbItemCount = 0
        itr = {<folly::detail::IteratorFacade<folly::AtomicHashMap<unsigned short, std::shared_ptr<VBucket> >::ahm_iterator<folly::AtomicHashMap<unsigned short, std::shared_ptr<VBucket>, std::hash<unsigned short>, std::equal_to<unsigned short>, std::allocator<char>, folly::AtomicHashArrayLinearProbeFcn, folly::identity_fn>, std::pair<unsigned short const, std::shared_ptr<VBucket> >, folly::AtomicHashArray<unsigned short, std::shared_ptr<VBucket>, std::hash<unsigned short>, std::equal_to<unsigned short>, std::allocator<char>, folly::AtomicHashArrayLinearProbeFcn, folly::identity_fn>::aha_iterator<folly::AtomicHashArray<unsigned short, std::shared_ptr<VBucket>, std::hash<unsigned short>, std::equal_to<unsigned short>, std::allocator<char>, folly::AtomicHashArrayLinearProbeFcn, folly::identity_fn>, std::pair<unsigned short const, std::shared_ptr<VBucket> > > >, std::pair<unsigned short const, std::shared_ptr<VBucket> >, std::forward_iterator_tag>> = {<No data fields>}, ahm_ = 0x7f7050b17ad8, 
          subMap_ = <optimized out>, 
          subIt_ = {<folly::detail::IteratorFacade<folly::AtomicHashArray<unsigned short, std::shared_ptr<VBucket>, std::hash<unsigned short>, std::equal_to<unsigned short>, std::allocator<char>, folly::AtomicHashArrayLinearProbeFcn, folly::identity_fn>::aha_iterator<folly::AtomicHashArray<unsigned short, std::shared_ptr<VBucket>, std::hash<unsigned short>, std::equal_to<unsigned short>, std::allocator<char>, folly::AtomicHashArrayLinearProbeFcn, folly::identity_fn>, std::pair<unsigned short const, std::shared_ptr<VBucket> > >, std::pair<unsigned short const, std::shared_ptr<VBucket> >, std::forward_iterator_tag>> = {<No data fields>}, aha_ = <optimized out>, offset_ = <optimized out>}}
        vbid = <optimized out>
        __for_range = <optimized out>
        item_count = 742395
#9  0x0000000000753421 in WarmupEstimateDatabaseItemCount::run (this=0x7f70a41b4d30) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/warmup.cc:266
        phosphor_internal_category_enabled_265 = {_M_b = {_M_p = 0x0}, static is_always_lock_free = <optimized out>}
        phosphor_internal_category_enabled_temp_265 = <optimized out>
        phosphor_internal_tpi_265 = {category = 0x0, name = 0x0, type = phosphor::AsyncStart, argument_names = {_M_elems = {0x0, 0x0}}, argument_types = {_M_elems = {phosphor::is_bool, phosphor::is_bool}}}
        phosphor_internal_guard_265 = {tpi = 0x1077c20 <WarmupEstimateDatabaseItemCount::run()::phosphor_internal_tpi_265>, enabled = true, arg1 = {<No data fields>}, arg2 = {<No data fields>}, start = {__d = {__r = 1078496517699481}}}
#10 0x0000000000ab7502 in GlobalTask::execute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:68
        guard = {previous = 0x0}
#11 0x0000000000ab4605 in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f70ad3ea840) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:189
        scheduleOverhead = <optimized out>
        start = {__d = {__r = 1078496517680198}}
        runAgain = false
        proxy = @0x7f7049c3e600: <error reading variable>
#12 0x0000000000c08ec0 in operator() (this=0x7f70ad3ea840) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
        fn = @0x7f70ad3ea840: {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f7049c3e600, tiny = {
              __data = "\000\346\303Ip\177\000\000\000\000\000\000\000\000\000\000\320\326=Qp\177\000\000S\030", '\000' <repeats 14 times>, "\020\251>\255p\177\000", __align = {<No data fields>}}}, 
          call_ = 0xab4cc0 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}>(folly::detail::function::Data&)>, 
          exec_ = 0xab3410 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}
#13 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f70bfa5a400, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.1.0-2211.x86_64.debug, CU 0xa39c047, DIE 0xa41ff7c>)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
        rctx = {prev_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {
                _M_pi = 0x0}}, <No data fields>}}
        startTime = {__d = {__r = 1078496517672512}}
        stats = {expired = false, waitTime = {__r = 64319}, runTime = {__r = 0}, enqueueTime = {__d = {__r = 1078496517608193}}, requestId = 0}
#14 0x0000000000bf37fa in folly::CPUThreadPoolExecutor::threadRun (this=0x7f70bfa5a400, thread=...)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
        task = {storage_ = {{emptyState = 0 '\000', value = {<folly::ThreadPoolExecutor::Task> = {func_ = {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x7f7049c3e600, tiny = {
                        __data = "\000\346\303Ip\177\000\000\000\000\000\000\000\000\000\000\320\326=Qp\177\000\000S\030", '\000' <repeats 14 times>, "\020\251>\255p\177\000", __align = {<No data fields>}}}, 
                    call_ = 0xab4cc0 <folly::detail::function::FunctionTraits<void ()>::callSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}>(folly::detail::function::Data&)>, 
                    exec_ = 0xab3410 <folly::detail::function::execSmall<FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}>(folly::detail::function::Op, folly::detail::function::Data*, folly::detail::function::Data)>}, enqueueTime_ = {
                    __d = {__r = 1078496517608193}}, expiration_ = {__r = 0}, expireCallback_ = {<folly::detail::function::FunctionTraits<void()>> = {<No data fields>}, data_ = {big = 0x1853, tiny = {
                        __data = "S\030\000\000\000\000\000\000[?\244", '\000' <repeats 13 times>, "_~\211\303p\177\000\000\240\251>\255p\177\000\000@\026\252\303p\177\000", __align = {<No data fields>}}}, call_ = 0x466eed
     <folly::detail::function::FunctionTraits<void ()>::uninitCall(folly::detail::function::Data&)>, exec_ = 0x0}, 
                  context_ = {<std::__shared_ptr<folly::RequestContext, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<folly::RequestContext, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {
                        _M_pi = 0x0}}, <No data fields>}}, poison = false, priority_ = 0 '\000', queueObserverPayload_ = 0}}, hasValue = true}}
        guard = {list_ = {forbid = true, prev = 0x0, curr = {name = {static npos = <optimized out>, b_ = 0xcdb38b "CPUThreadPoolExecutor", e_ = 0xcdb3a0 ""}}}}
#15 0x0000000000c0be79 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
No locals.
#16 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
No locals.
#17 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
No locals.
#18 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
No locals.
#19 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
        fn = <optimized out>
#20 0x0000000000ab4294 in operator() (this=0x7f70bfabfbc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
        fn = @0x7f70bfabfbc0: <error reading variable>
#21 operator() (__closure=0x7f70bfabfbc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:47
        threadNameOpt = {storage_ = {{emptyState = -96 '\240', value = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
                  _M_p = 0x7f70ad3ea9a0 "ReaderPool3"}, _M_string_length = 11, {_M_local_buf = "ReaderPool3\000\000\000\000", _M_allocated_capacity = 8021036716148221266}}}, hasValue = true}}
        func = <error reading variable func (Cannot access memory at address 0x7f70bfabfbc0)>
#22 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
        fn = @0x7f70bfabfbc0: <error reading variable>
#23 0x00007f70c165ed40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
No locals.
#24 0x00007f70c3466ea5 in start_thread (arg=0x7f70ad3fc700) at pthread_create.c:307
        __res = <optimized out>
        pd = 0x7f70ad3fc700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140121919702784, -1821991772178769846, 0, 8392704, 0, 140121919702784, 1754053509652256842, 1754005468419954762}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, 
              cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
#25 0x00007f70c0da79fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
No core file now.