When trying to play a file with 0,01x speed, audacity crashes or hangs

[abePdIta]

Binary package hint: audacity

Moving playback speed slide down to 0.01 causes a crash.

ProblemType: Crash
Architecture: i386
Date: Sat Oct 31 02:09:38 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/audacity
NonfreeKernelModules: wl
Package: audacity 1.3.9-6
ProcCmdline: audacity
ProcEnviron:
 LANGUAGE=it_IT.UTF-8
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SegvAnalysis:
 Segfault happened at: 0x64f8a83 <memmove+35>: rep movsl %ds:(%esi),%es:(%edi)
 PC (0x064f8a83) ok
 source "%ds:(%esi)" (0x2bbe7577) not located in a known VMA region (needed readable region)!
 destination "%es:(%edi)" (0x0b51424b) ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: audacity
StacktraceTop:
 memmove () from /lib/tls/i686/cmov/libc.so.6
 Mixer::MixVariableRates(int*, WaveTrack*, long long*, float*, int*, int*, Resample*) ()
 Mixer::Process(long long) ()
 AudioIO::FillBuffers() ()
 AudioThread::Entry() ()
Title: audacity crashed with SIGSEGV in memmove()
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev video

[David Henningsson (diwic)]

abePdlta, you are recommended to keep your bug private as CoreDump.gz usually contains private data. Instead we wait for the apport retracer to perform a stack trace.

[Benjamin Drung (bdrung)]

The apport data already contains debug information. Therefore a retrace is not required. In this case simply remove the CoreDump.gz and make the bug report public.

[David Henningsson (diwic)]

@Benjamin: I don't think you're correct here. The stack trace that apport makes, is based on the core dump, combined with its internal debug symbols for a lot of packages. Therefore Apport's stack trace will be better than the one provided in the initial bug report.

[Benjamin Drung (bdrung)]

What is missing in provided stack trace?

[Frank Cheung (fcuk112)]

abePdIta, can you please let me know 1) if you are able to reproduce this bug. 2) how to reproduce it?

thanks.

[David Henningsson (diwic)]

@Frank: Did you try to reproduce it yourself? When I try here (to playback a file with 0,01 speed), I get the error message "Libsamplerate only supports resampling factors between 1/12 and 12", and then Audacity hangs. So it seems something is wrong here.

@Benjamin: I was hoping for some more variable symbols instead of just "No symbol table info available.".
I'm not an apport retracer expert though, so I'm not 100% sure if I actually would have got some.

[Frank Cheung (fcuk112)]

David, sorry I wasn't sure how to reproduce the bug but I have just now. Set it back to NEW.

[abePdIta (abepdita)]

Here I am!
I reproduced this bug at least two times consecutively:
- run audacity
- open a file (16 bit, 44100 Hz)
- slide down the playback speed to 0,01 and play at target speed

At this point, in my case, audacity hangs (or close instantly) and then apport shows up.

[dino99 (9d9)]

This version is outdated and no more supported