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  1. MariaDB Server
  2. MDEV-4565

Server crashes in audit_null_plugin_deinit if audit_null could not create the log file on plugin startup

        Details

        • Type: Bug
        • Status: In Progress
        • Priority: Minor
        • Resolution: Unresolved
        • Affects Version/s: 5.5.31
        • Fix Version/s: 5.5
        • Component/s: None
        • Labels:

          Description

          Server crashes if audit_null plugin failed to create audit_null_tables.log upon installation. To reproduce, do something to hinder the plugin from creating the log, e.g. in the draft test case below I change permissions on the file so that it cannot be written to.

          #4  _IO_new_fclose (fp=0x0) at iofclose.c:57
#5  0x00007f1cfe1f0200 in audit_null_plugin_deinit (arg=0x0) at /data/repo/bzr/5.5/plugin/audit_null/audit_null.c:80
#6  0x0000000000823917 in finalize_audit_plugin (plugin=0x34047a0) at /data/repo/bzr/5.5/sql/sql_audit.cc:452
#7  0x00000000006a691c in plugin_deinitialize (plugin=0x34047a0, ref_check=true) at /data/repo/bzr/5.5/sql/sql_plugin.cc:1170
#8  0x00000000006a7090 in reap_plugins () at /data/repo/bzr/5.5/sql/sql_plugin.cc:1249
#9  0x00000000006ab20a in mysql_install_plugin (thd=0x353b140, name=0x353ef00, dl_arg=0x353ef10) at /data/repo/bzr/5.5/sql/sql_plugin.cc:2157
#10 0x00000000006936ac in mysql_execute_command (thd=0x353b140) at /data/repo/bzr/5.5/sql/sql_parse.cc:4383
#11 0x0000000000698efa in mysql_parse (thd=0x353b140, rawbuf=0x7f1cf40074c8 "install plugin audit_null soname 'adt_null'", length=43, parser_state=0x7f1cfe43c500) at /data/repo/bzr/5.5/sql/sql_parse.cc:5760
#12 0x00000000006840a7 in dispatch_command (command=COM_QUERY, thd=0x353b140, packet=0x35ac771 "install plugin audit_null soname 'adt_null'", packet_length=43) at /data/repo/bzr/5.5/sql/sql_parse.cc:1068
#13 0x0000000000682afd in do_command (thd=0x353b140) at /data/repo/bzr/5.5/sql/sql_parse.cc:794
#14 0x000000000082866f in do_handle_one_connection (thd_arg=0x353b140) at /data/repo/bzr/5.5/sql/sql_connect.cc:1266
#15 0x0000000000827da0 in handle_one_connection (arg=0x353b140) at /data/repo/bzr/5.5/sql/sql_connect.cc:1181
#16 0x0000000000bf9ebf in pfs_spawn_thread (arg=0x3551f60) at /data/repo/bzr/5.5/storage/perfschema/pfs.cc:1015
#17 0x00007f1d09b29e9a in start_thread (arg=0x7f1cfe43d700) at pthread_create.c:308
#18 0x00007f1d08e1dcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

          let $MYSQLD_DATADIR= `SELECT @@datadir`;
write_file $MYSQLD_DATADIR/audit_null_tables.log;
test
EOF
system chmod 400 $MYSQLD_DATADIR/audit_null_tables.log;

install plugin audit_null soname 'adt_null';

          bzr version-info

          revision-id: sergii@pisem.net-20130521165635-k9lcq5g95glmrv6r
revno: 3778
branch-nick: 5.5

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                relates to

                Task - A task that needs to be done. MDEV-260 auditing table accesses

                • Major - Major loss of function.
                • Closed

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                    • Assignee:
                      holyfoot Alexey Botchkov
                      Reporter:
                      elenst Elena Stepanova
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                      • Created:
                        Updated: