mediascanner-service-2.0 crashed with SIGSEGV

[Iain Lane]

I've started getting this apport crash intermittently. To the best of my knowledge I'm not doing anything with mediascanner, at least not intentionally.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: mediascanner2.0 0.99+14.04.20140205-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-8.27-generic 3.13.2
Uname: Linux 3.13.0-8-generic x86_64
ApportVersion: 2.13.2-0ubuntu2
Architecture: amd64
CrashCounter: 1
CurrentDesktop: Unity
Date: Tue Feb 11 14:22:47 2014
ExecutablePath: /usr/bin/mediascanner-service-2.0
InstallationDate: Installed on 2012-10-07 (491 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121007)
ProcCmdline: mediascanner-service-2.0
SegvAnalysis:
 Segfault happened at: 0x7f3a627b5fd7: movzbl (%r10,%rcx,1),%r10d
 PC (0x7f3a627b5fd7) ok
 source "(%r10,%rcx,1)" (0x7f3b65586557) not located in a known VMA region (needed readable region)!
 destination "%r10d" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: mediascanner2
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstflump3dec.so
 ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstflump3dec.so
 ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstflump3dec.so
 ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstflump3dec.so
 ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstflump3dec.so
Title: mediascanner-service-2.0 crashed with SIGSEGV
UpgradeStatus: Upgraded to trusty on 2013-05-07 (280 days ago)
UserGroups: adm autopilot cdrom dip kvm libvirtd lpadmin plugdev sambashare sudo vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 h_getbits (N=8, bb=0x7f3a65586538) at ../../src/bitstream.h:290
 h_rewindNbits (bb=bb@entry=0x7f3a65586538, N=<optimized out>) at ../../src/bitstream.c:262
 III_huffman_decode (is=is@entry=0x7f3a631d3870, si=si@entry=0x7f3a631d1a30, ch=ch@entry=0, gr=gr@entry=0, part2_start=part2_start@entry=0, tl=tl@entry=0x7f3a65581470) at ../../src/mp3-c.c:611
 c_decode_mp3 (tl=tl@entry=0x7f3a65581470) at ../../src/mp3-c.c:1721
 mp3tl_decode_frame (tl=0x7f3a65581470, samples=<optimized out>, bufsize=<optimized out>) at ../../src/mp3tl.c:564

[Launchpad Janitor (janitor)]

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

[Lonnie Lee Best (launchpad-startport)]

What does mediascanner do? The name impies it is scanning my media. Why would I want this?

[Iain Lane (laney)]

Would somebody please look at this bug?

I get this apport report at every single login. Looks like there's a crash coming from fluendo, but maybe mediascanner can guard against this and not crash itself somehow.

[Iain Lane (laney)]

Here's a file that can reproduce this problem in pure gstreamer. For me it's a crash in fluendo with a particular mp3 file.

[Iain Lane (laney)]

Forwarded the bug report to fluendo

[Iain Lane (laney)]

They've pushed a new release which is supposed to address this particular crash, will test & upload.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gst-fluendo-mp3 - 0.10.29.debian-1

---------------
gst-fluendo-mp3 (0.10.29.debian-1) unstable; urgency=medium

  * Don't Build-Depend on liboil-dev any more - this is no longer used.
  * New upstream version 0.10.29.debian
    + Fixes segfault when reading some invalid files (LP: #1278894)

 -- Iain Lane <email address hidden> Wed, 25 Jun 2014 17:50:05 +0100