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 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...Reading symbols from /usr/lib/debug/opt/couchbase/bin/memcached.debug...done. done. [New LWP 124414] [New LWP 124372] [New LWP 124374] [New LWP 124379] [New LWP 124380] [New LWP 124381] [New LWP 124385] [New LWP 124386] [New LWP 124394] [New LWP 124396] [New LWP 124397] [New LWP 124398] [New LWP 124399] [New LWP 124400] [New LWP 124401] [New LWP 124402] [New LWP 124404] [New LWP 124405] [New LWP 124406] [New LWP 124407] [New LWP 124408] [New LWP 124409] [New LWP 124410] [New LWP 124411] [New LWP 124412] [New LWP 124413] [New LWP 124415] [New LWP 124416] [New LWP 124417] [New LWP 124418] [New LWP 124419] [New LWP 124420] [New LWP 124421] [New LWP 124890] [New LWP 124891] [New LWP 124892] [New LWP 124893] [New LWP 124894] [New LWP 124895] [New LWP 124896] [New LWP 124897] [New LWP 124898] [New LWP 124899] [New LWP 124900] [New LWP 124901] [New LWP 124902] [New LWP 124903] [New LWP 124904] [New LWP 124905] [New LWP 124906] [New LWP 124907] [New LWP 124908] [New LWP 124909] [New LWP 124910] [New LWP 124913] To enable execution of this file add add-auto-load-safe-path /usr/lib64/libthread_db-1.0.so line to your configuration file "/root/.gdbinit". To completely disable this security protection add set auto-load safe-path / line to your configuration file "/root/.gdbinit". For more information about this security protection see the "Auto-loading safe path" section in the GDB manual. E.g., run from the shell: info "(gdb)Auto-loading safe path" Core was generated by `/opt/couchbase/bin/memcached -C /opt/couchbase/var/lib/couchbase/config/memcach'. #0 __atomic_add (__val=1, __mem=0x20) at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:96 Id Target Id Frame 55 LWP 124913 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 54 LWP 124910 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 53 LWP 124909 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 52 LWP 124908 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 51 LWP 124907 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 50 LWP 124906 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 49 LWP 124905 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 48 LWP 124904 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 47 LWP 124903 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 46 LWP 124902 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 45 LWP 124901 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 44 LWP 124900 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 43 LWP 124899 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 42 LWP 124898 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 41 LWP 124897 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 40 LWP 124896 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 39 LWP 124895 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 38 LWP 124894 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 37 LWP 124893 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 36 LWP 124892 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 35 LWP 124891 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 34 LWP 124890 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 33 LWP 124421 0x00007fb04600deb3 in create_module () at ../sysdeps/unix/syscall-template.S:81 32 LWP 124420 0x0000000000873e93 in store (__m=std::memory_order_seq_cst, __i=true, this=0x7fafa25f5008) at /opt/gcc-10.2.0/include/c++/10.2.0/atomic:104 31 LWP 124419 0x00000000007cef3e in incrementAge (this=) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/blob.h:88 30 LWP 124418 0x00007fb046007bf9 in closelog_internal () at ../misc/syslog.c:433 29 LWP 124417 0x00007fb046004bdd in fsync () at ../sysdeps/unix/syscall-template.S:81 28 LWP 124416 fetch_and (__m=std::memory_order_seq_cst, __i=254 '\376', this=0x7fafa990ebb3) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/stored-value.h:206 27 LWP 124415 __normal_iterator (__i=@0x7faf9d5d7350: , this=) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/sstable/sstable.cc:822 26 LWP 124413 0x00007fb047c1f399 in je_extent_heap_remove_first (ph=ph@entry=0x7fafb0008530) at src/extent.c:283 25 LWP 124412 0x00007fb046007bf9 in closelog_internal () at ../misc/syslog.c:433 24 LWP 124411 0x00007fb046007bf9 in closelog_internal () at ../misc/syslog.c:433 23 LWP 124410 magma::LSMTree::Get(magma::Slice const&, std::shared_ptr&, magma::LookupBuffer&, magma::Slice&, bool&, bool, magma::ReaderStats*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:975 22 LWP 124409 0x00007fb0468abe37 in std::__detail::_List_node_base::_M_transfer (this=0x7fb0382cb068, __first=0x7fb03852bfe0, __last=0x7fb028531a60) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++98/list.cc:102 21 LWP 124408 0x00007fb046007bf9 in closelog_internal () at ../misc/syslog.c:433 20 LWP 124407 0x00007ffd41be36c2 in ?? () 19 LWP 124406 0x00007fb047be85f2 in bitmap_unset (binfo=, bit=, bitmap=0x7fb045c8c3c0) at include/jemalloc/internal/bitmap.h:344 18 LWP 124405 0x00007fb04600deb3 in create_module () at ../sysdeps/unix/syscall-template.S:81 17 LWP 124404 0x00007fb04600deb3 in create_module () at ../sysdeps/unix/syscall-template.S:81 16 LWP 124402 0x00007fb047c1f399 in je_extent_heap_remove_first (ph=ph@entry=0x7fafb0208530) at src/extent.c:283 15 LWP 124401 0x00007fb04600deb3 in create_module () at ../sysdeps/unix/syscall-template.S:81 14 LWP 124400 HashTable::Statistics::epilogue(HashTable::Statistics::StoredValueProperties, StoredValue const*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/hash_table.cc:652 13 LWP 124399 0x00007fb04600deb3 in create_module () at ../sysdeps/unix/syscall-template.S:81 12 LWP 124398 0x00007fb04600deb3 in create_module () at ../sysdeps/unix/syscall-template.S:81 11 LWP 124397 0x00007fb046002c3d in fts_children (sp=0x1a76608, instr=27739168) at fts.c:546 10 LWP 124396 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 9 LWP 124394 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 8 LWP 124386 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 7 LWP 124385 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 6 LWP 124381 0x00007fb046002c3d in fts_children (sp=0x1, instr=1953851507) at fts.c:546 5 LWP 124380 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 4 LWP 124379 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 3 LWP 124374 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 2 LWP 124372 0x00007fb04600deb3 in create_module () at ../sysdeps/unix/syscall-template.S:81 * 1 LWP 124414 __atomic_add (__val=1, __mem=0x20) at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:96 No core file now.