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[Launchpad Bug Tracker <1179913@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package libdvdread - 5.0.0-1ubuntu1

---------------
libdvdread (5.0.0-1ubuntu1) utopic; urgency=medium

  * Merge from Debian unstable. Remaining changes:
    - Re-add missing install-css.sh.
    - debian/control: add Suggests for install-css.sh on debhelper,
      fakeroot, and build-essential.
    - debian/rules: install install-css.sh, leave perms executable.

libdvdread (5.0.0-1) unstable; urgency=medium

  [ Matteo F. Vescovi ]
  * New upstream release
    - debian/patches: patchset re-worked against v4.9.9
  * Imported Upstream version 4.9.9
  * debian/patches: patchset re-worked against v4.9.9

  [ Benjamin Drung ]
  * dvdread-config is gone now.
  * Drop dvdread-config_manpage.patch.
  * DEVELOPMENT-POLICY.txt is gone.
  * debian/rules: Update list of unused files.
  * Add missing pkg-config dependency.

  [ Reinhard Tartler ]
  * Imported Upstream version 5.0.0
    - Fixes libdvdread runs out of memory (LP: #377414)
    - Fixes: libdvdread4 unable to read Wall.e encrypted DVDs (LP: #590983)
    - Fixes: libdvdread: Can't seek to block (LP: #983535, #446664, #1066317)
    - Fixes: Zero check failed in ifo_read.c:904 for pgc->subp_control[i]
             = 0x00000001 (LP: #1179913, Closes: #504256)
  * Refresh patches, drop merged patches
 -- Benjamin Drung <bdrung@xxxxxxxxxx>   Sun, 17 Aug 2014 23:03:17 +0200

** Changed in: libdvdread (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1179913

Title:
  Zero check failed in ifo_read.c:904 for pgc->subp_control[i] =
  0x00000001

Status in “libdvdread” package in Ubuntu:
  Fix Released

Bug description:
  When reading 'The Snowman' DVD from 2004, I get this output:

  jani@saegusa:DVD$ dvdbackup -i /dev/sr0 -M
  libdvdread: Using libdvdcss version 1.2.12 for DVD access

  libdvdread: Attempting to retrieve all CSS keys
  libdvdread: This can take a _long_ time, please be patient

  libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x0000015a
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x000001c1
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x00023749
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_02_0.VOB at 0x000241f0
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x0002423d
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_03_0.VOB at 0x00024f03
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_03_1.VOB at 0x00024f50
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_04_0.VOB at 0x00025d8f
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_04_1.VOB at 0x00025ddc
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_05_0.VOB at 0x000e2c65
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_05_1.VOB at 0x000e2cb2
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_06_0.VOB at 0x000eb4df
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_06_1.VOB at 0x000eb52c
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_07_0.VOB at 0x000f7617
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_07_1.VOB at 0x000f7664
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_08_0.VOB at 0x00128eb1
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_08_1.VOB at 0x00128efe
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_09_0.VOB at 0x001da296
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_09_1.VOB at 0x001da2e3
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_10_0.VOB at 0x001e3856
  libdvdread: Elapsed time 0
  libdvdread: Get key for /VIDEO_TS/VTS_10_1.VOB at 0x001e38a3
  libdvdread: Elapsed time 0
  libdvdread: Found 10 VTS's
  libdvdread: Elapsed time 0
  *** Zero check failed in /build/buildd/libdvdread-4.2.0/src/ifo_read.c:904
      for pgc->subp_control[i] = 0x00000001
  *** Zero check failed in /build/buildd/libdvdread-4.2.0/src/ifo_read.c:904
      for pgc->subp_control[i] = 0x00000001
  *** Zero check failed in /build/buildd/libdvdread-4.2.0/src/ifo_read.c:904
      for pgc->subp_control[i] = 0x00000001

  This doesn't prevent dvdbackup from finishing up, and the resulting
  copy looks to be fine (on cursory inspection). While dvdbackup is
  running, the issue also doesn't cause an OOM as in Bug #377414. Still,
  I tested libdvdread4_4.2.0+20130428-0ubuntu0~bryce~precise1_amd64.deb
  from Bryce Harrington's PPA [1], but it just slightly changed the
  "Zero check failed" output:

  *** Zero check failed in ifo_read.c:904
      for pgc->subp_control[i] = 0x00000001
  *** Zero check failed in ifo_read.c:904
      for pgc->subp_control[i] = 0x00000001
  *** Zero check failed in ifo_read.c:904
      for pgc->subp_control[i] = 0x00000001

  This DVD is the only one I've come across manifesting this, and I've
  backed up some 40 DVDs so far on this same setup.

  
  *[1] https://launchpad.net/~bryce/+archive/lp377414/+build/4542681

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: libdvdread4 4.2.0-1ubuntu3
  ProcVersionSignature: Ubuntu 3.5.0-29.49~precise1-generic 3.5.7.11
  Uname: Linux 3.5.0-29-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.2
  Architecture: amd64
  CheckboxSubmission: 09ae689090491ca53449589269e4bfd8
  CheckboxSystem: edda5d4f616ca792bf437989cb597002
  Date: Tue May 14 14:49:44 2013
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  MarkForUpload: True
  SourcePackage: libdvdread
  UpgradeStatus: Upgraded to precise on 2011-11-21 (540 days ago)

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