Package: mariadb-server-10.3 Version: 1:10.3.17-0+deb10u1 Severity: important
I run mysqldump (through automysqlbackup) daily. Several times per week during this backup mysqld hangs. The process however stays running and still accepts TCP and socket connections, however no SQL queries are ever answered anymore. This is very serious because systemd does not catch this and leaves the process running. Only a "pkill -9 mysqld" can resolve the situation. In the 15+ years I have been using mysql/mariadb I have never encoutered this situation where my system is left hanging without a working database. If mysqld crashed (this is bad enough) the process should end itself so systemd can restart it. The messages in error.log are: corrupted size vs. prev_size 191101 7:23:41 [ERROR] mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. To report this bug, see https://mariadb.com/kb/en/reporting-bugs We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. Server version: 10.3.17-MariaDB-0+deb10u1 key_buffer_size=134217728 read_buffer_size=131072 max_used_connections=5 max_threads=153 thread_count=8 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467422 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x7f2b600014b8 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0x7f2bc4814dd8 thread_stack 0x49000 -- System Information: Debian Release: 10.1 APT prefers stable APT policy: (990, 'stable'), (900, 'oldstable') Architecture: amd64 (x86_64) Kernel: Linux 4.19.0-6-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to C.UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to C.UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages mariadb-server-10.3 depends on: ii adduser 3.118 ii debconf [debconf-2.0] 1.5.71 ii galera-3 25.3.25-2 ii gawk 1:4.2.1+dfsg-1 ii iproute2 4.20.0-2 ii libc6 2.28-10 ii libdbi-perl 1.642-1+b1 ii libgnutls30 3.6.7-4 ii libpam0g 1.3.1-5 ii libstdc++6 8.3.0-6 ii lsb-base 10.2019051400 ii lsof 4.91+dfsg-1 ii mariadb-client-10.3 1:10.3.17-0+deb10u1 ii mariadb-common 1:10.3.17-0+deb10u1 ii mariadb-server-core-10.3 1:10.3.17-0+deb10u1 ii passwd 1:4.5-1.1 ii perl 5.28.1-6 ii psmisc 23.2-1 ii rsync 3.1.3-6 ii socat 1.7.3.2-2 ii zlib1g 1:1.2.11.dfsg-1 Versions of packages mariadb-server-10.3 recommends: ii libhtml-template-perl 2.97-1 Versions of packages mariadb-server-10.3 suggests: ii bsd-mailx [mailx] 8.1.2-0.20180807cvs-1 ii mailx 1:20071201-3 pn mariadb-test <none> pn netcat-openbsd <none> pn tinyca <none> -- debconf information excluded
