Your message dated Thu, 13 Sep 2012 22:59:26 +0200
with message-id <[email protected]>
and subject line Re: Bug#687556: sox: LADSPA plugins segfault
has caused the Debian Bug report #687556,
regarding sox: LADSPA plugins segfault
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--
687556: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=687556
Debian Bug Tracking System
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--- Begin Message ---
Subject: sox: LADSPA plugins segfault
Package: sox
Version: 14.3.1-1+b1
Severity: normal
Tags: patch
*** Please type your report below this line ***
sox will segfault when trying to use the LADSPA effect with any plugin.
An example command with the ‘cmt’ package installed:
sox input.wav output.wav ladspa cmt delay_1s
Produces the following backtrace:
#0 0x00007ffff794183c in ?? () from /usr/lib/libltdl.so.7
#1 0x00007ffff7942c28 in ?? () from /usr/lib/libltdl.so.7
#2 0x00007ffff7941096 in ?? () from /usr/lib/libltdl.so.7
#3 0x00007ffff79424d3 in ?? () from /usr/lib/libltdl.so.7
#4 0x00007ffff7942af8 in lt_dlopenadvise () from /usr/lib/libltdl.so.7
#5 0x00007ffff7942bb9 in lt_dlopenext () from /usr/lib/libltdl.so.7
#6 0x00007ffff7b7bbc2 in ?? () from /usr/lib/libsox.so.1
#7 0x00007ffff7b70e4d in sox_effect_options () from /usr/lib/libsox.so.1
#8 0x0000000000407cce in ?? ()
#9 0x000000000040984c in ?? ()
#10 0x00007ffff5e27c8d in __libc_start_main () from /lib/libc.so.6
#11 0x0000000000402be9 in ?? ()
#12 0x00007fffffffe208 in ?? ()
#13 0x000000000000001c in ?? ()
#14 0x0000000000000008 in ?? ()
#15 0x00007fffffffe515 in ?? ()
#16 0x00007fffffffe522 in ?? ()
#17 0x00007fffffffe539 in ?? ()
#18 0x00007fffffffe556 in ?? ()
#19 0x00007fffffffe55b in ?? ()
#20 0x00007fffffffe55e in ?? ()
#21 0x00007fffffffe565 in ?? ()
#22 0x00007fffffffe569 in ?? ()
#23 0x0000000000000000 in ?? ()
A discussion¹ of this appeared on the SoX-users mailing list in July 2010,
where member ‘bl4’ discovered sox was not calling the libltdl lt_dlinit
function and provided a patch.
I have applied the patch and sox no longer segfaults with LADSPA plugins.
¹http://sourceforge.net/mailarchive/message.php?msg_id=25680681
-- System Information:
Debian Release: 6.0.5
APT prefers stable
APT policy: (900, 'stable'), (500, 'stable-updates')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL
set to en_US.UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages sox depends on:
ii libc6 2.11.3-3 Embedded GNU C Library: Shared lib
ii libgomp1 4.4.5-8 GCC OpenMP (GOMP) support library
ii libgsm1 1.0.13-3 Shared libraries for GSM speech co
ii libltdl7 2.2.6b-2 A system independent dlopen wrappe
ii libmagic1 5.04-5+squeeze2 File type determination library us
ii libopencore-amrnb0 0.1.2-1 Adaptive Multi Rate speech codec -
ii libopencore-amrwb0 0.1.2-1 Adaptive Multi-Rate - Wideband spe
ii libpng12-0 1.2.44-1+squeeze4 PNG library - runtime
ii libsndfile1 1.0.21-3+squeeze1 Library for reading/writing audio
ii libsox-fmt-alsa 14.3.1-1+b1 SoX alsa format I/O library
ii libsox-fmt-ao 14.3.1-1+b1 SoX Libao format I/O library
ii libsox-fmt-base 14.3.1-1+b1 Minimal set of SoX format librarie
ii libsox-fmt-oss 14.3.1-1+b1 SoX OSS format I/O library
ii libsox-fmt-pulse 14.3.1-1+b1 SoX PulseAudio format I/O library
ii libsox1b 14.3.1-1+b1 SoX library of audio effects and p
ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
sox recommends no packages.
Versions of packages sox suggests:
ii libsox-fmt-all 14.3.1-1+b1 All SoX format libraries
-- no debconf information
--
Gerald Turner Email: [email protected] JID: [email protected]
GPG: 0xFA8CD6D5 21D9 B2E8 7FE7 F19E 5F7D 4D0C 3FA0 810F FA8C D6D5
--- sox-14.3.1/src/ladspa.c.orig 2010-07-03 14:01:30.000000000 +0200
+++ sox-14.3.1/src/ladspa.c 2010-07-04 13:42:46.000000000 +0200
@@ -103,6 +103,7 @@
path = getenv("LADSPA_PATH");
if (path == NULL)
path = LADSPA_PATH;
+ lt_dlinit();
lt_dlsetsearchpath(path);
if ((l_st->lth = lt_dlopenext(l_st->name)) == NULL) {
lsx_fail("could not open LADSPA plugin %s", l_st->name);
pgpbEWIFbFXxB.pgp
Description: PGP signature
--- End Message ---
--- Begin Message ---
fixed 687556 14.3.2-1
thanks
Gerald Turner <[email protected]>:
> Version: 14.3.1-1+b1
> sox will segfault when trying to use the LADSPA effect with any
> plugin.
> A discussion¹ of this appeared on the SoX-users mailing list in July
> 2010,
> where member ‘bl4’ discovered sox was not calling the libltdl
> lt_dlinit
> function and provided a patch.
>
> I have applied the patch and sox no longer segfaults with LADSPA
> plugins.
Yes, this fix was included upstream for SoX 14.3.2 in a slightly different form
(git commit ed128fe), so neither that version nor version 14.4.0 should have
this problem. It's just that Debian stable still has 14.3.1.
I don't think this is the type of bug fix that stable point releases are made
for, so you'll either have to wait for the next major Debian release or use
apt-pinning to get a recent package from testing (note that you'll need to
update *all* SoX packages manually in that case, i.e. libsox-fmt-base etc.).
Ulrich
--- End Message ---
