gdb /usr/sbin/mariadbd /var/lib/mysql/core.* GNU gdb (Debian 8.2.1-2+b3) 8.2.1 Copyright (C) 2018 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-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/sbin/mariadbd...Reading symbols from /usr/lib/debug/.build-id/09/5a52d8e0b9dc37e74b700e66bfd0dda525cde1.debug...done. done. [New LWP 8501] [New LWP 8513] [New LWP 8515] [New LWP 8518] [New LWP 8421] [New LWP 8420] [New LWP 8500] [New LWP 8422] [New LWP 8423] [New LWP 8431] [New LWP 8519] [New LWP 8427] [New LWP 8424] [New LWP 8516] [New LWP 8514] [New LWP 8517] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `/usr/sbin/mariadbd'. Program terminated with signal SIGFPE, Arithmetic exception. #0 __pthread_kill (threadid=, signo=signo@entry=8) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56 56 ../sysdeps/unix/sysv/linux/pthread_kill.c: No such file or directory. [Current thread is 1 (Thread 0x7f1194df3700 (LWP 8501))] (gdb) bt #0 __pthread_kill (threadid=, signo=signo@entry=8) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56 #1 0x00005610ab644a47 in my_write_core (sig=sig@entry=8) at ./mysys/stacktrace.c:424 #2 0x00005610ab13e5c0 in handle_fatal_signal (sig=8) at ./sql/signal_handler.cc:355 #3 #4 0x00007f11b97db1e4 in __difftime (time1=1667850110, time0=0) at difftime.c:114 #5 0x00005610ab4d1ba1 in srv_monitor () at ./storage/innobase/srv/srv0srv.cc:1194 #6 srv_monitor_task () at ./storage/innobase/srv/srv0srv.cc:1281 #7 0x00005610ab5d9178 in tpool::thread_pool_generic::timer_generic::run (this=0x5610aea78b20) at ./tpool/tpool_generic.cc:343 #8 tpool::thread_pool_generic::timer_generic::execute (arg=0x5610aea78b20) at ./tpool/tpool_generic.cc:363 #9 0x00005610ab5d9e0b in tpool::task::execute (this=0x5610aea78b60) at ./tpool/task.cc:37 #10 tpool::task::execute (this=0x5610aea78b60) at ./tpool/task.cc:27 #11 0x00005610ab5d7a0f in tpool::thread_pool_generic::worker_main (this=0x5610ae6e2610, thread_var=0x5610ae6e2cc0) at ./tpool/tpool_generic.cc:580 #12 0x00007f11b9b26b2f in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6 #13 0x00007f11b9bfbfa3 in start_thread (arg=) at pthread_create.c:486 #14 0x00007f11b981f06f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 (gdb) bt full #0 __pthread_kill (threadid=, signo=signo@entry=8) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56 pd = tid = 8501 pid = 8420 val = 0 #1 0x00005610ab644a47 in my_write_core (sig=sig@entry=8) at ./mysys/stacktrace.c:424 No locals. #2 0x00005610ab13e5c0 in handle_fatal_signal (sig=8) at ./sql/signal_handler.cc:355 curr_time = 1667850110 tm = {tm_sec = 50, tm_min = 41, tm_hour = 20, tm_mday = 7, tm_mon = 10, tm_year = 122, tm_wday = 1, tm_yday = 310, tm_isdst = 0, tm_gmtoff = 3600, tm_zone = 0x5610ae5eb230 "CET"} thd = 0x0 print_invalid_query_pointer = false #3 No locals. #4 0x00007f11b97db1e4 in __difftime (time1=1667850110, time0=0) at difftime.c:114 No locals. #5 0x00005610ab4d1ba1 in srv_monitor () at ./storage/innobase/srv/srv0srv.cc:1194 current_time = 1667850110 current_time = #6 srv_monitor_task () at ./storage/innobase/srv/srv0srv.cc:1281 old_lsn = 2146583901 new_lsn = now = threshold = #7 0x00005610ab5d9178 in tpool::thread_pool_generic::timer_generic::run (this=0x5610aea78b20) at ./tpool/tpool_generic.cc:343 No locals. #8 tpool::thread_pool_generic::timer_generic::execute (arg=0x5610aea78b20) at ./tpool/tpool_generic.cc:363 timer = 0x5610aea78b20 #9 0x00005610ab5d9e0b in tpool::task::execute (this=0x5610aea78b60) at ./tpool/task.cc:37 No locals. #10 tpool::task::execute (this=0x5610aea78b60) at ./tpool/task.cc:27 No locals. #11 0x00005610ab5d7a0f in tpool::thread_pool_generic::worker_main (this=0x5610ae6e2610, thread_var=0x5610ae6e2cc0) at ./tpool/tpool_generic.cc:580 task = 0x5610aea78b60 #12 0x00007f11b9b26b2f in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6 No symbol table info available. #13 0x00007f11b9bfbfa3 in start_thread (arg=) at pthread_create.c:486 ret = pd = now = unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139713488828160, 3734524455884781372, 139712735996878, 139712735996879, 139713488828160, 94629649717536, -3607212282057754820, -3607170770694342852}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = #14 0x00007f11b981f06f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 No locals. (gdb)