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  1. MariaDB Server
  2. MDEV-7398

mysqld segfaults on FreeBSD 10.1 i386 when built with clang 3.4

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.0.15
    • 10.0.20
    • Compiling
    • FreeBSD i386bsd 10.1-RELEASE FreeBSD 10.1-RELEASE #0 r274401: Tue Nov 11 22:51:51 UTC 2014 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC i386
    • 10.0.20

    Description

      From: spil.oss@gmail.com
      To: maria-developers@lists.launchpad.net
      subject: mysqld 10.0.15 segfaults on FreeBSD i386 clang 3.4

      >Description:
      When MariaDB is built with clang 3.4 on FreeBSD i386 (which is
      the default compiler) the server will segfault the moment a
      client connects to it. Same behaviour is observed with clang
      3.5. Built with clang 3.3 on 10.1 runs without segfaults.
      Built on FreeBSD 10.0 (which comes with clang 3.3) runs OK.
      >How-To-Repeat:
      Use FreeBSD 10.1 i386
      Use port to build MariaDB 10.0 or 5.5
      Connect to server using client

      >Fix:
      Build with clang 3.3 or build using Pourdiere (uses 10.0 jail)

      >Submitter-Id: <submitter ID>
      >Originator: Bernard Spil
      >Organization:
      FreeBSD MariaDB 10.0 port committer
      >MySQL support: none
      >Synopsis: MariaDB segfaults on i386 FreeBSD
      >Severity: non-critical
      >Priority: low
      >Category: mysql
      >Class: sw-bug
      >Release: mysql-10.0.15 (FreeBSD Ports)

      >C compiler: clang 3.4
      >C++ compiler: clang 3.4
      >Environment:
      FreeBSD 10.1 GENERIC i386 Celeron U4100 Dual Core 4GB
      System: FreeBSD i386bsd 10.1-RELEASE FreeBSD 10.1-RELEASE #0 r274401: Tue Nov 11 22:51:51 UTC 2014 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC i386

      Some paths: /usr/bin/perl /usr/bin/make /usr/local/bin/gmake /usr/bin/cc

      Compilation info (call): CC='/usr/bin/cc' CFLAGS='-O2 -pipe -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -DDBUG_OFF' CXX='/usr/bin/c++' CXXFLAGS='-O2 -pipe -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -DDBUG_O
      FF' LDFLAGS='' ASFLAGS=''
      Compilation info (used): CC='/usr/bin/cc' CFLAGS='-O2 -pipe -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -DDBUG_OFF' CXX='/usr/bin/c++' CXXFLAGS='-O2 -pipe -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -DDBUG_O
      FF' LDFLAGS='' ASFLAGS=''
      LIBC:
      rrr- 1 root wheel 1427444 Nov 11 23:52 /lib/libc.so.7
      rrr- 1 root wheel 2833712 Nov 11 23:52 /usr/lib/libc.a
      rrr- 1 root wheel 166 Nov 11 23:52 /usr/lib/libc.so

      Perl: This is perl 5, version 18, subversion 4 (v5.18.4) built for i386-freebsd-thread-multi-64int

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            spil, and this is the 10.0 patch for atomics.

            serg Sergei Golubchik added a comment - spil , and this is the 10.0 patch for atomics.
            spil Bernard Spil added a comment -

            Thanks! Testing... Now where's my i386 VM...

            spil Bernard Spil added a comment - Thanks! Testing... Now where's my i386 VM...
            spil Bernard Spil added a comment - - edited

            Seems to have improved a bit but still segfaults.
            Build 10.0.19 on FreeBSD-10.1-i386 OK
            Start OK
            Connect client OK
            use mysql -> segfault and daemon restarts
            (before the daemon would not restart)

            spil Bernard Spil added a comment - - edited Seems to have improved a bit but still segfaults. Build 10.0.19 on FreeBSD-10.1-i386 OK Start OK Connect client OK use mysql -> segfault and daemon restarts (before the daemon would not restart)

            Trying 9.2 with clang 3.4. mariadb-5.5 doesn't crash for me even without any patches.
            mariadb-10.0 does crash on startup if innodb or xtradb are enabled. with the patches it seems to work, tests pass.
            I'll remove 5.5 from "affected versions".

            serg Sergei Golubchik added a comment - Trying 9.2 with clang 3.4. mariadb-5.5 doesn't crash for me even without any patches. mariadb-10.0 does crash on startup if innodb or xtradb are enabled. with the patches it seems to work, tests pass. I'll remove 5.5 from "affected versions".
            spil Bernard Spil added a comment - - edited

            Does the system produce build logs? I'd like to look at the build script you're using as well.

            Furthermore, you should update the build host, FreeBSD 9.2 has been End-of-Life for quite a long time
            https://www.freebsd.org/security/security.html#sup

            spil Bernard Spil added a comment - - edited Does the system produce build logs? I'd like to look at the build script you're using as well. Furthermore, you should update the build host, FreeBSD 9.2 has been End-of-Life for quite a long time https://www.freebsd.org/security/security.html#sup

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              serg Sergei Golubchik
              spil Bernard Spil
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                Resolved:

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