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Bug #1423

tvheadend aborts and core dumps when using tv_grab_file

Added by glazed donut over 10 years ago. Updated over 10 years ago.

Status:
Fixed
Priority:
Normal
Assignee:
Adam Sutton
Category:
EPG - Grabbers
Target version:
3.2
Start date:
2012-11-22
Due date:
% Done:

100%

Estimated time:
Found in version:
3.2.18~g40a8920
Affected Versions:
3.2

Description

I am trying to get xmltv to work with my tvheadend version 3.2.18~g40a8920

I created a grabber based on the tv_grab_file found here: http://code.google.com/p/tv-grab-file/downloads/detail?name=tv_grab_file&can=2&q=

I created an xmltv file from my xmltv provider and named it ~/.xmltv/tv_grab_file.xmltv

Executing the tv_grab_file from the command line output the xmltv xml properly.

However whan I afterwards try to start tvheadend, I get the following error:

Nov 17 20:30:01 [INFO]:epggrab: module /usr/bin/tv_grab_file created
tvheadend: /opt/tvheadend/src/epggrab/module.c:94: epggrab_module_create: Assertion `!epggrab_module_find_by_id(id)' failed.
Aborted (core dumped)

History

#1

Updated by Adam Sutton over 10 years ago

  • Status changed from New to Need feedback

I'm struggling to reproduce this one. I can certainly see that if the code though it had found two XMLTV scripts with exactly the same path this might happen. However I cannot see how that could happen.

Do you have the tv_find_grabbers script installed? If so what is the output?

Adam

#2

Updated by glazed donut over 10 years ago

No - I don't have the tv_find_grabbers script installed.

I actually got everything working on a different NAS box.

I will revisit my setup on the original NAS box - to ensure that it is infact a bug - rather than just an error that I made.

#3

Updated by Adam Sutton over 10 years ago

Ta,

I completely understand why it crashes. I just don't understand how it gets to that point. It appears that it finds 2 grabbers with the same ID, but since the path is the ID that implies 2 grabbers with the same path. How on earth that can happen I've no idea!

Adam

#4

Updated by Mattias Nissler over 10 years ago

Simple answer: A path appears twice on PATH. Example: /bin:/usr/bin:/usr/local/bin:/usr/bin

For a solution, I suggest that the loop in https://github.com/tvheadend/tvheadend/blob/master/src/epggrab/module/xmltv.c#L677 should check whether a grabber for the path in question already exists. Bonus points for de-duping the PATH elements first, but that's harder to add to the current code.

#5

Updated by Adam Sutton over 10 years ago

Matias,

Thanks for that update, somehow I missed the message. I hadn't considered that case, I'll look into this immediately.

Adam

#6

Updated by Adam Sutton over 10 years ago

  • Status changed from Need feedback to Resolved
  • Affected Versions 3.2 added

Fix now in git master. Need to decide whether to port to 3.2.

Adam

#7

Updated by Adam Sutton over 10 years ago

  • Target version set to 3.2
#8

Updated by Adam Sutton over 10 years ago

  • Status changed from Resolved to Fixed
  • % Done changed from 0 to 100

Applied in changeset commit:c9e438e1485c6356891b1896098353e32eafc60c.

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