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Thread: amreport Segmentation Fault (Ver. 3.1.0)

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  1. #1
    Join Date
    Mar 2011
    Location
    Parker, Texas, USA
    Posts
    4

    Default amreport Segmentation Fault (Ver. 3.1.0)

    Using Amanda 3.1.0 installed on an Ubuntu 10.10 system, I was debugging the following failure of amdump:

    ---------
    localhost:/ 0 12373970k failed: killed while writing to tape (17:03:42), waiting for a new tape
    ---------

    I ran "amreport elijah." It immediately fails with "Segmentation fault." I then ran amreport using the Perl debugger ("perl -d /usr/sbin/amreport elijah"):

    ---------
    DB<1> c
    Signal SEGV at /usr/sbin/amreport line 547
    Aborted
    ---------

    Finally, I set a breakpoint at line 546 and stepped into the failing code:

    ---------
    $ perl -d /usr/sbin/amreport elijah

    Loading DB routines from perl5db.pl version 1.32
    Editor support available.
    DB<1> c
    Signal SEGV at /usr/sbin/amreport line 547
    Aborted
    Enter h or `h h' for help, or `man perldebug' for more help.

    main::(/usr/sbin/amreport:57): my $opt_nomail = 0;
    DB<1> b 540
    Line 540 not breakable.
    DB<2> b 546
    DB<3> c
    main::(/usr/sbin/amreport:546): my $diskfile = config_dir_relative(getconf($CNF_DISKFILE));
    DB<3> p $CNF_DISKFILE
    26
    DB<4> p getconf($CNF_DISKFILE)
    disklist
    DB<5> n
    main::(/usr/sbin/amreport:547): $cfgerr_level += Amanda::Disklist::read_disklist('filename' => $diskfile);
    DB<5> p $diskfile
    /etc/amanda/elijah/disklist
    DB<6> s
    Amanda::Disklist::read_disklist(/usr/lib/amanda/perl/Amanda/Disklist.pm:255):
    255: my %params = @_;
    DB<6> n
    Amanda::Disklist::read_disklist(/usr/lib/amanda/perl/Amanda/Disklist.pm:257):
    257: return read_disklist_internal(
    258: ($params{filename} or config_dir_relative(getconf($CNF_DISKFILE))),
    259: \%disks, ($params{disk_class} or "Amanda::Disklist::Disk"),
    260: \%hosts, ($params{host_class} or "Amanda::Disklist::Host"),
    261: \%interfaces, ($params{interface_class} or "Amanda::Disklist::Interface"),
    262: );
    DB<6>
    Signal SEGV at /usr/sbin/amreport line 547
    Aborted

    $
    ---------

    Clearly the disklist file is implicated but I found nothing unusual with it:

    ---------
    $ cat /etc/amanda/elijah/disklist
    localhost / spanning-gnutar-local
    ---------

    The hex appearance seems fine also:

    ---------
    $ od -cx /etc/amanda/elijah/disklist
    0000000 l o c a l h o s t / s p a n
    6f6c 6163 686c 736f 2074 202f 7073 6e61
    0000020 n i n g - g n u t a r - l o c a
    696e 676e 672d 756e 6174 2d72 6f6c 6163
    0000040 l \n
    0a6c
    0000042

    $
    ---------

    So, the question is: Why is amreport failing?

  2. #2
    Join Date
    Mar 2011
    Location
    Parker, Texas, USA
    Posts
    4

    Default Re: amreport Segmentation Fault (Ver. 3.1.0)

    Since I've received no response on these two Amanda failures I will debug both the taper and amreport crashes further.

  3. #3
    Join Date
    Nov 2005
    Location
    Canada
    Posts
    1,049

    Default

    We already fix a lot of bug in the 3.1 branch, can you try 3.1.3?

    Can you try using gdb:
    $gdb /usr/bin/perl
    (gdb) run /usr/sbin/amreport elijah
    ...
    (gdb)bt
    (gdb)list
    (gdb)quit

    Post the complete output

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