Re: Problem with recent tar on NetBSD/sparc-1.5

[Adrian Bunk]

On Sat, 8 Sep 2001, Paul Eggert wrote:

> > Date: Sun, 9 Sep 2001 01:13:18 +0200 (CEST)
> > From: Adrian Bunk <address@hidden>
>
> >   1488 tar      CALL  wait4(0x5d1,0xeffff5f4,0,0)
> >   1488 tar      RET   wait4 1489/0x5d1
> >   1488 tar      CALL  getuid
> >   1488 tar      RET   getuid 30313/0x7669
> >   1488 tar      CALL  geteuid
> >   1488 tar      RET   geteuid 30313/0x7669
> >   1488 tar      CALL  getgid
> >   1488 tar      RET   getgid 30313/0x7669
> >   1488 tar      CALL  getegid
> >   1488 tar      RET   getegid 30313/0x7669
> >   1488 tar      CALL  write(0x2,0xefffed28,0x5)
> >   1488 tar      GIO   fd 2 wrote 5 bytes
> >        "tar: "
> >   1488 tar      RET   write 5
> >   1488 tar      CALL  write(0x2,0xefffed90,0x19)
> >   1488 tar      GIO   fd 2 wrote 25 bytes
> >        "Child died with signal 13"
>
> It sounds like gzip is dying with signal 13, which I assume is
> SIGPIPE.  It used to be that tar ignored all failures of the

Yse, signal 13 is SIGPIPE.

> underlying gzip process, but starting with 1.13.18 it started
> reporting them, and that must be what you're running into.
>
> Can you please go back a little further in the kdump output, and find
> the area around the last successful read by tar from the gzip pipe?

<--  snip  -->

...
  1488 tar      GIO   fd 3 read 8 bytes
       "\0\0\0\0\0\0\0\0"
  1488 tar      RET   read 4096/0x1000
  1488 tar      CALL  read(0x3,0x4b000,0x800)
  1488 tar      GIO   fd 3 read 2048 bytes
       "ImageMagick-5.3.8/PerlMagick/t/zlib/write.t\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0000000644\0000000024\0000000024\00000000001045\00007\
        343024563\000014076\0 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0#!/usr/local/bin/perl
        #
        # Test writing files using zlib-based compression
        #
        # Contributed by Bob Friesenhahn <address@hidden>
        #
        BEGIN { $| = 1; $test=1; print "1..1\134n"; }
        END {print "not ok $test\134n" unless $loaded;}

        use Image::Magick;
        $loaded=1;

        require 't/subroutines.pl';

        chdir 't/zlib' || die 'Cd failed';

        #
        # 1) Test writing Zip-compressed MIFF
        #

        testReadWrite( 'input.miff',
          'output.miff',
          q/compress=>'Zip'/,
          '25b14945dc0131b7010b1fadb5249ad38ad9b8fdc3e0c7a9c56590940fd9734a' )\
        ;

        $test = 0;  # Quench PERL compliaint

        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
        \0\0\0\0\0\0\0"
  1488 tar      RET   read 2048/0x800
  1488 tar      CALL  write(0x4,0x49000,0x1a8d)
  1488 tar      GIO   fd 4 wrote 4088 bytes
 ...

<--  snip  -->

> Also, can you send the number of bytes returned by the last 10 or so
> successful reads from that pipe?


The last successful reads were:

<--  snip  -->

  1488 tar      GIO   fd 3 read 2048 bytes
  1488 tar      GIO   fd 3 read 4088 bytes
  1488 tar      GIO   fd 3 read 8 bytes
  1488 tar      GIO   fd 3 read 4088 bytes
  1488 tar      GIO   fd 3 read 8 bytes
  1488 tar      GIO   fd 3 read 2048 bytes
  1488 tar      GIO   fd 3 read 4088 bytes
  1488 tar      GIO   fd 3 read 8 bytes
  1488 tar      GIO   fd 3 read 4088 bytes
  1488 tar      GIO   fd 3 read 8 bytes
  1488 tar      GIO   fd 3 read 2048 bytes
  1488 tar      GIO   fd 3 read 4088 bytes
  1488 tar      GIO   fd 3 read 8 bytes
  1488 tar      GIO   fd 3 read 4088 bytes
  1488 tar      GIO   fd 3 read 8 bytes
  1488 tar      GIO   fd 3 read 2048 bytes

<--  snip  -->


> Also, please also look in the kdump output and see what gzip was doing
> just before it died.

I can't see it. If it helps you you an find the complete kdump output at
[1].

> Thanks.
>

cu
Adrian

[1] http://www.fs.tum.de/~bunk/tar-out.bz2www.fs.tum.de/~bunk/tar-out.bz2


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