tvtime-scanner crashed with SIGSEGV in strncpy()

[Triniton Adam]

tvtime-scanner crashes with exit status 139.

The attachment [1] contains a testcase (under ./crash) crashing the
program. It ensures that you can easily reproduce the bug. Additionally,
under ./crash_info/, we include more information about the crash such as
a core dump, the dmesg generated by the crash, and its output.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: tvtime 1.0.2-10ubuntu8
ProcVersionSignature: Ubuntu 3.11.0-3.7-generic 3.11.0-rc6
Uname: Linux 3.11.0-3-generic x86_64
ApportVersion: 2.12.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.336
Date: Fri Aug 23 00:13:04 2013
ExecutablePath: /usr/bin/tvtime-scanner
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130822)
MarkForUpload: True
ProcEnviron:

SegvAnalysis:
 Segfault happened at: 0x7ff01915f82c <__strncpy_ssse3+28>: cmpb $0x0,(%rcx)
 PC (0x7ff01915f82c) ok
 source "$0x0" ok
 destination "(%rcx)" (0x00000000) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: tvtime
StacktraceTop:
 ?? ()
 ?? ()
 __libc_start_main (main=0x401fa0, argc=3, ubp_av=0x7fffcbcda988, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcbcda978) at libc-start.c:260
 ?? ()
Title: tvtime-scanner crashed with SIGSEGV in __libc_start_main()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 strncpy (__len=235, __src=<optimized out>, __dest=0xf47db8 "") at /usr/include/x86_64-linux-gnu/bits/string3.h:120
 station_new (norm=0x411485 "NTSC", table=table@entry=0x412eed "Custom", us_cable_mode=us_cable_mode@entry=0, verbose=verbose@entry=0) at station.c:367
 main (argc=<optimized out>, argv=0x7fffcbcda988) at tvtime-scanner.c:95

[triniton (triniton-redhat-bugs)]

Created attachment 789406
[1]

Description of problem:

tvtime-scanner crashes with exit status 139.

The attachment [1] contains a testcase (under ./crash) crashing the
program. It ensures that you can easily reproduce the bug. Additionally,
under ./crash_info/, we include more information about the crash such as
a core dump, the dmesg generated by the crash, and its output.

[triniton (triniton-redhat-bugs)]

Created attachment 789407
StacktraceSource

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Pojar Geo (geoubuntu)]

This seems to be the problem:
If env HOME unset(not empty), getenv("HOME") return NULL pointer and then causes strncpy() error.

[POJAR (pojar-redhat-bugs)]

This seems to be the problem:
If env HOME unset(not empty), getenv("HOME") return NULL pointer and then causes strncpy() error.

[Tomas (tomas-redhat-bugs)]

Hi, thanks for the investigations. I'll take a look at the crash.

[Launchpad Janitor (janitor)]

This bug was fixed in the package tvtime - 1.0.2-12.1ubuntu1

---------------
tvtime (1.0.2-12.1ubuntu1) utopic; urgency=medium

  * Merge with Debian unstable (LP: #1215656, #1215678, #1264960), remaining
    Ubuntu changes:
    - debian/patches/tvtime-1.0.1-savematte.patch
    - debian/patches/desktop_file.patch
    - debian/patches/tvtime-1.0.2-alsa.patch
    - debian/patches/tvtime-1.0.2-alsamixer.patch
    - debian/patches/pal_audio_mode_persistence.patch
    - debian/patches/tvtime-1.0.2-screensaver.patch
    - debian/patches/tvtime-1.0.2-videoinput.patch
    - debian/patches/tvtime-1.0.2-osd.patch
    - debian/patches/tvtime-1.0.2-usage.patch
    - debian/patches/tvtime-1.0.2-command.patch
    - debian/patches/tvtime-1.0.2-cursor.patch
    - debian/patches/tvtime-1.0.2-metacity.patch
    - debian/patches/tvtime-1.0.2-x_size_hint.patch
    - debian/patches/tvtime-1.0.2-menu.patch
    - debian/patches/tvtime-1.0.2-focus_mouse.patch
    - debian/patches/tvtime-1.0.2-wmicon.patch
    - debian/patches/tvtime-1.0.2-tvtimeosd.patch
    - debian/patches/tvtime-1.0.2-cpuid.patch
    - debian/patches/tvtime-1.0.2-xmltv.patch
    - debian/patches/tvtime-1.0.2-vbidata.patch
    - debian/patches/tvtime-1.0.2-verbose.patch
    - debian/patches/tvtime-1.0.2-vbiscreen.patch
    - debian/patches/tvtime-1.0.2-closed_caption.patch
    - debian/patches/tvtime-1.0.2-vbi.patch
    - debian/patches/tvtime-1.0.2-xinerama.patch
    - debian/patches/tvtime-1.0.2-volume.patch
    - debian/patches/tvtime-1.0.2-xcommon.patch
    - debian/patches/tvtime-1.0.2-station_remap.patch
    - debian/patches/tvtime-1.0.2-channel_list.patch
    - debian/patches/tvtime-1.0.2_cppcheck.patch
    - debian/patches/tvtime-1.0.2-build.patch
    - debian/patches/tvtime-1.0.2-wmpid.patch
    - debian/patches/tvtime-1.0.2-libsupc++.patch
    - debian/control: Build-Depends on autoconf, automake, autopoint, libtool
      libasound2-dev and libxss instead of libxtst.
    - debian/rules: Call autoreconf to regenerate the configure script.
    - debian/source/format: Added file.
    Dropped Debian changes:
    - debian/control: Suggests: oss-compat.
    - debian/control: Build-Depends chrpath.
    - debian/rules: Fixed binary-or-shlib-defines-rpath.
  * debian/patches/tvtime-1.0.2-device.patch: Add feature to auto detect video
    and vbi devices. (LP: #153801)
  * debian/patches/tvtime-1.0.2-videodev.patch: Get rid of private versions of
    videodev.h and videodev2.h
  * Updated debian/patches/tvtime-1.0.2-alsa.patch: Improved alsa audio
    streaming code. (LP: #472770, #963036)
  * Removed debian/patches/tvtime-1.0.2-output_volume.patch
  * debian/rules: Make autoreconf not call autopoint since we ship a patch for
    po/Makefile.in.in
  * debian/control: Build-Depends on libv4l-dev.

tvtime (1.0.2-12.1) unstable; urgency=medium

  * Non-maintainer upload.
  * Update home.diff patch. (Closes: #732207)

tvtime (1.0.2-12) unstable; urgency=low

  * QA upload, orphaning this package, see #728576.

tvtime (1.0.2-11) unstable; urgency=low

  * Moved default.tvtime.xml from usr/share/doc/tvtime/examples to
    usr/share/tvtime. Closes: #709955.
  * debian/patches/home.diff: Added. Closes:...