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-7.1.0-2211.x86_64.debug...done. done. [New LWP 6227] [New LWP 6207] [New LWP 6208] [New LWP 6209] [New LWP 6210] [New LWP 6211] [New LWP 6215] [New LWP 6216] [New LWP 6217] [New LWP 6218] [New LWP 6219] [New LWP 6220] [New LWP 6221] [New LWP 6222] [New LWP 6223] [New LWP 6224] [New LWP 6225] [New LWP 6226] [New LWP 6228] [New LWP 6229] [New LWP 6230] [New LWP 6231] [New LWP 6232] [New LWP 6233] [New LWP 6234] [New LWP 6235] [New LWP 6236] [New LWP 6237] [New LWP 6238] [New LWP 6240] [New LWP 6241] [New LWP 6242] [New LWP 6243] [New LWP 6244] [New LWP 6245] [New LWP 6246] [New LWP 6247] [New LWP 6248] [New LWP 6254] [New LWP 6255] [New LWP 6256] [New LWP 6257] [New LWP 6258] [New LWP 6259] [New LWP 6260] [New LWP 6261] [New LWP 6262] [New LWP 6263] [New LWP 6264] [New LWP 6265] 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 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); Id Target Id Frame 50 LWP 6265 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 49 LWP 6264 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 48 LWP 6263 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 47 LWP 6262 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 46 LWP 6261 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 45 LWP 6260 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 44 LWP 6259 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 43 LWP 6258 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 42 LWP 6257 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 41 LWP 6256 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 40 LWP 6255 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 39 LWP 6254 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 38 LWP 6248 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 37 LWP 6247 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 36 LWP 6246 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 35 LWP 6245 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 34 LWP 6244 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 33 LWP 6243 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 32 LWP 6242 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 31 LWP 6241 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 30 LWP 6240 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 29 LWP 6238 0x00007f70c0da7fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81 28 LWP 6237 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 27 LWP 6236 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 26 LWP 6235 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 25 LWP 6234 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 24 LWP 6233 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 23 LWP 6232 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 22 LWP 6231 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 21 LWP 6230 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 20 LWP 6229 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 19 LWP 6228 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38 18 LWP 6226 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 17 LWP 6225 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 16 LWP 6224 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 15 LWP 6223 0x00007f70c0da7fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81 14 LWP 6222 0x00007f70c0da7fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81 13 LWP 6221 0x00007f70c0da7fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81 12 LWP 6220 0x00007f70c0da7fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81 11 LWP 6219 0x00007f70c0d9cccd in poll () at ../sysdeps/unix/syscall-template.S:81 10 LWP 6218 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 9 LWP 6217 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 8 LWP 6216 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 7 LWP 6215 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 6 LWP 6211 0x00007f70c0d9cccd in poll () at ../sysdeps/unix/syscall-template.S:81 5 LWP 6210 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 4 LWP 6209 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 3 LWP 6208 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238 2 LWP 6207 0x00007f70c0da7fd3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81 * 1 LWP 6227 0x00007f70c0cdf3d7 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55 No core file now.