Opened 10 years ago

Last modified 10 years ago

#9041 closed defect

Mythvideo seg fault playing iso — at Initial Version

Reported by: paul<at>planar.id.au Owned by: markk
Priority: minor Milestone: unknown
Component: MythTV - DVD Playback Version: Master Head
Severity: medium Keywords:
Cc: Ticket locked: no

Description

I'm getting a segfault with trunk when playing 1 specific iso - one that worked albeit with some audio issues with 0.23. Other isos are playing, I assume it's something specific to this one file.

The file is the "Eagles Hell Freezes Over Tour." It's always had audio issues in 0.23 - playing fast, playing slow, sounding funny. I believe there is something unique about the audio track. I upgraded to trunk yesterday, and I'm now getting a segfault.

When running mythfrontend with -v all, the last bit of the trace looks like: 2010-10-02 10:27:58.225 DVDRB: safe_read: called after DVDNAV_STOP 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal): ReadDirect? checksum 54849 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal) @0 -- begin 2010-10-02 10:27:58.225 DVDRB: safe_read: called after DVDNAV_STOP 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal): ReadDirect? checksum 54849 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal) @0 -- begin 2010-10-02 10:27:58.225 DVDRB: safe_read: called after DVDNAV_STOP 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal): ReadDirect? checksum 54849 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal) @0 -- begin 2010-10-02 10:27:58.225 DVDRB: safe_read: called after DVDNAV_STOP 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal): ReadDirect? checksum 54849 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal) @0 -- begin 2010-10-02 10:27:58.225 DVDRB: safe_read: called after DVDNAV_STOP 2010-10-02 10:27:58.225 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal): ReadDirect? checksum 54849 2010-10-02 10:27:58.225 [mpeg @ 0xb6cea0c0]Probe buffer size limit 5000000 reached 2010-10-02 10:27:58.225 [mpeg @ 0xb6cea0c0]Estimating duration from bitrate, this may be inaccurate Segmentation fault

The lines above are repeated a large number of times, the last thing before them was: 2010-10-02 10:29:36.152 MythUIHelper: Cache too big (21284120), removing :-usr-share-mythtv-server-mythvideo-posters-7350_coverart.jpg-reflected-164x270.png: 2010-10-02 10:29:36.153 MythUIHelper: 2 images are eligible for expiry 2010-10-02 10:29:36.153 MythUIHelper: Cache too big (21106168), removing :-usr-share-mythtv-server-mythvideo-posters-0092890.jpg--133x280.png: 2010-10-02 10:29:36.153 MythUIHelper: NOT IN RAM CACHE, Adding, and adding to size :-usr-share-mythtv-server-mythvideo-fanart-0123815_fanart.jpg--1280x1023.png: :523 7760: 2010-10-02 10:29:36.153 MythUIHelper: MythUIHelper::CacheImage? : Cache Count = :215: size :20965720: 2010-10-02 10:29:36.153 MythUIImage(0x917c448): LoadImage? found in cache :-usr-share-mythtv-server-mythvideo-fanart-0123815_fanart.jpg--1280x1023.png: RefCount? = 2 2010-10-02 10:29:36.160 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal) @0 -- begin 2010-10-02 10:29:36.160 DVDRB: Entering DVDNAV_WAIT 2010-10-02 10:29:36.160 DVDRB: Exiting DVDNAV_WAIT status 2010-10-02 10:29:36.160 Entering DVD Still Frame 2010-10-02 10:29:36.170 DVDNAV_STOP 2010-10-02 10:29:36.170 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal): ReadDirect? checksum 54849 2010-10-02 10:29:36.170 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal) @0 -- begin 2010-10-02 10:29:36.170 DVDRB: safe_read: called after DVDNAV_STOP 2010-10-02 10:29:36.171 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal): ReadDirect? checksum 54849 2010-10-02 10:29:36.171 RingBuf?(/usr/share/mythtv/server/mythvideo/The Eagles Hell Freezes Over Tour.iso): ReadPriv?(..2048, normal) @0 -- begin 2010-10-02 10:29:36.171 DVDRB: safe_read: called after DVDNAV_STOP

Finally, a backtrace of the segfault itself is attached.

I'd attach the iso file, but seeing as it's a DVD iso and large, that probably isn't practical (or legal). But if there's a way to subset it and leave it useful, I'm happy to do that. From my naive view, it sounds like it's just the DVD navigation stuff that's crashing, so possibly there isn't much of the content that's needed.

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