GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-119.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 51953] [New LWP 51417] [New LWP 51418] [New LWP 51425] [New LWP 51426] [New LWP 51427] [New LWP 51431] [New LWP 51432] [New LWP 51457] [New LWP 51458] [New LWP 51459] [New LWP 51460] [New LWP 51461] [New LWP 51462] [New LWP 51463] [New LWP 51464] [New LWP 51465] [New LWP 51466] [New LWP 51467] [New LWP 51468] [New LWP 51469] [New LWP 51470] [New LWP 51471] [New LWP 51472] [New LWP 51473] [New LWP 51474] [New LWP 51475] [New LWP 51476] [New LWP 51477] [New LWP 51478] [New LWP 51479] [New LWP 51480] [New LWP 51481] [New LWP 51482] [New LWP 51941] [New LWP 51942] [New LWP 51943] [New LWP 51944] [New LWP 51945] [New LWP 51946] [New LWP 51947] [New LWP 51948] [New LWP 51949] [New LWP 51950] [New LWP 51951] [New LWP 51952] [New LWP 51954] [New LWP 51955] [New LWP 51956] [New LWP 51957] [New LWP 51958] [New LWP 51959] [New LWP 51960] [New LWP 51961] [New LWP 51967] [New LWP 56656] [New LWP 56657] [New LWP 56659] [New LWP 56660] 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 0x00007fe7d3a6a387 in raise () from /lib64/libc.so.6 Id Target Id Frame 59 LWP 56660 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 58 LWP 56659 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 57 LWP 56657 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 56 LWP 56656 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 55 LWP 51967 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 54 LWP 51961 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 53 LWP 51960 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 52 LWP 51959 0x00007fe7d570d685 in extent_list_remove (extent=0x7fe714f87cc0, list=0x7fe740408308) at include/jemalloc/internal/extent_inlines.h:440 51 LWP 51958 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 50 LWP 51957 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 49 LWP 51956 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 48 LWP 51955 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 47 LWP 51954 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 46 LWP 51952 0x00007fe7d6210efd in open64 () from /lib64/libpthread.so.0 45 LWP 51951 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 44 LWP 51950 0x00007fe7d6210fc3 in pread64 () from /lib64/libpthread.so.0 43 LWP 51949 0x00000000009be9f6 in magma::ItemGCFilter::Process(std::vector, std::allocator > >&, std::vector, std::allocator > >*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/mvcc.cc:117 42 LWP 51948 0x00007fe7d3b8e24b in __memmove_ssse3_back () from /lib64/libc.so.6 41 LWP 51947 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 40 LWP 51946 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 39 LWP 51945 0x00007fffcbff16c2 in ?? () 38 LWP 51944 0x00007fe7d3b29bdd in fdatasync () from /lib64/libc.so.6 37 LWP 51943 0x00007fe7d3b29bdd in fdatasync () from /lib64/libc.so.6 36 LWP 51942 0x00007fe7d3b29bdd in fdatasync () from /lib64/libc.so.6 35 LWP 51941 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 34 LWP 51482 0x00007fe7d3b32eb3 in epoll_wait () from /lib64/libc.so.6 33 LWP 51481 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 32 LWP 51480 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 31 LWP 51479 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 30 LWP 51478 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 29 LWP 51477 0x00007fe7d3b89dae in __memcpy_ssse3_back () from /lib64/libc.so.6 28 LWP 51476 __atomic_add (__val=1, __mem=0x7fe7377f6508) at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:96 27 LWP 51475 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 26 LWP 51474 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 25 LWP 51473 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 24 LWP 51472 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 23 LWP 51471 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 22 LWP 51470 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 21 LWP 51469 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 20 LWP 51468 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 19 LWP 51467 0x00007fe7d3b2cbf9 in syscall () from /lib64/libc.so.6 18 LWP 51466 0x00007fe7d3b32eb3 in epoll_wait () from /lib64/libc.so.6 17 LWP 51465 0x00007fe7d3b32eb3 in epoll_wait () from /lib64/libc.so.6 16 LWP 51464 0x00007fe7d621054d in __lll_lock_wait () from /lib64/libpthread.so.0 15 LWP 51463 0x00007fffcbff16c2 in ?? () 14 LWP 51462 0x00007fe7d621054d in __lll_lock_wait () from /lib64/libpthread.so.0 13 LWP 51461 0x00000000006d0904 in FailoverTable::getLatestUUID (this=0x7fe739001600) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/failover-table.cc:53 12 LWP 51460 0x00007fe7d621054d in __lll_lock_wait () from /lib64/libpthread.so.0 11 LWP 51459 0x00007fe7d3b27c3d in poll () from /lib64/libc.so.6 10 LWP 51458 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 9 LWP 51457 0x00007fe7d620da35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 8 LWP 51432 0x00007fe7d620dde2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 7 LWP 51431 0x00007fe7d620dde2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 6 LWP 51427 0x00007fe7d3b27c3d in poll () from /lib64/libc.so.6 5 LWP 51426 0x00007fe7d620dde2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 4 LWP 51425 0x00007fe7d620dde2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 3 LWP 51418 0x00007fe7d620dde2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 2 LWP 51417 0x00007fe7d3b32eb3 in epoll_wait () from /lib64/libc.so.6 * 1 LWP 51953 0x00007fe7d3a6a387 in raise () from /lib64/libc.so.6 No core file now.