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  1. Percona XtraDB Cluster
  2. PXC-1909

LP #1597831: (xenial package only) xtradb-cluster-server SIGSEGV in find_or_create_digest

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    Details

    • Type: Bug
    • Status: Done
    • Priority: Low
    • Resolution: Cannot Reproduce
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None

      Description

      **Reported in Launchpad by Jochen last update 11-07-2017 04:18:30

      Running a unit test, which alters between create/alter table statements and inserting into a log table I get a segfault. I can reproduce this every time, but it crashes at different positions.

      Backtrace:
      ---------
      13:22:34 UTC - mysqld got signal 11 ;
      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.
      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.
      Please help us make Percona XtraDB Cluster better by reporting any
      bugs at https://bugs.launchpad.net/percona-xtradb-cluster

      key_buffer_size=16777216
      read_buffer_size=131072
      max_used_connections=161
      max_threads=507
      thread_count=123
      connection_count=74
      It is possible that mysqld could use up to
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 218365 K bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.

      Thread pointer: 0x2157230
      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 = 7f44f4917e38 thread_stack 0x30000
      /usr/sbin/mysqld(my_print_stacktrace+0x3b)[0x91d4bb]
      /usr/sbin/mysqld(handle_fatal_signal+0x49a)[0x68aefa]
      /lib/x86_64-linux-gnu/libpthread.so.0(+0x113d0)[0x7f5f14ca53d0]
      /lib/x86_64-linux-gnu/libc.so.6(+0x14d6f2)[0x7f5f141776f2]
      /usr/sbin/mysqld(_Z21find_or_create_digestP10PFS_threadPK18sql_digest_storagePKcj+0x29d)[0x9356ed]
      /usr/sbin/mysqld[0x960143]
      /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x589)[0x719739]
      /usr/sbin/mysqld(_Z10do_commandP3THD+0x339)[0x71cee9]
      /usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x182)[0x6e18c2]
      /usr/sbin/mysqld(handle_one_connection+0x40)[0x6e1ab0]
      /usr/sbin/mysqld(pfs_spawn_thread+0x143)[0x95be33]
      /lib/x86_64-linux-gnu/libpthread.so.0(+0x76fa)[0x7f5f14c9b6fa]
      /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7f5f14130b5d]

      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0): is an invalid pointer
      Connection ID (thread ID): 62211
      Status: NOT_KILLED

      You may download the Percona XtraDB Cluster operations manual by visiting
      http://www.percona.com/software/percona-xtradb-cluster/. You may find information
      in the manual which will help you identify the cause of the crash.
      160630 15:22:35 mysqld_safe Number of processes running now: 0
      160630 15:22:35 mysqld_safe WSREP: not restarting wsrep node automatically
      160630 15:22:35 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
      ---------

      When trying to find the last working version I found that packages for trusty seemed to be unaffected.
      bad: percona-xtradb-cluster-server-5.6_5.6.30-25.16-1.xenial_amd64.deb
      good: percona-xtradb-cluster-server-5.6_5.6.30-25.16-1.trusty_amd64.deb

      ./good
      ./good/percona-xtradb-cluster-server-5.6_5.6.26-25.12-1.trusty_amd64.deb
      ./good/percona-xtradb-cluster-server-5.6_5.6.30-25.16-1.trusty_amd64.deb
      ./good/percona-xtradb-cluster-server-5.6_5.6.25-25.12-1.vivid_amd64.deb
      ./good/percona-xtradb-cluster-server-5.6_5.6.21-25.8-938.trusty_amd64.deb
      ./bad
      ./bad/percona-xtradb-cluster-server-5.6_5.6.26-25.12-1.vivid_amd64.deb
      ./bad/percona-xtradb-cluster-server-5.6_5.6.28-25.14-1.wily_amd64.deb
      ./bad/percona-xtradb-cluster-server-5.6_5.6.27-25.13-1.wily_amd64.deb
      ./bad/percona-xtradb-cluster-server-5.6_5.6.30-25.16-1.xenial_amd64.deb
      ./bad/percona-xtradb-cluster-server-5.6_5.6.29-25.15-1.xenial_amd64.deb

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              • Assignee:
                krunal.bauskar Krunal Bauskar
                Reporter:
                lpjirasync lpjirasync (Inactive)
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                • Created:
                  Updated: