Fwd: Bug#657885: ffmpeg: Illegal instruction on dreamplug (arm cpu)

[Reinhard Tartler]

Hi Loïc,

Can you perhaps have a look at this bugreport? Either the dynamic
loader is doing something wrong here on armel, or the libavcodec
baseline shared library builds do enable armv7 instructions after all.

AFAIUI, this does not only affect the dreamplug but also the (supposly
popular) raspberry pi. Can/Shall we do something about it before the
freeze?

Cheers,
Reinhard


---------- Forwarded message ----------
From: Darwin Te <darwin_te at hotmail.com>
Date: Sun, Jan 29, 2012 at 5:27 PM
Subject: Bug#657885: ffmpeg: Illegal instruction on dreamplug (arm cpu)
To: Debian Bug Tracking System <submit at bugs.debian.org>


Package: ffmpeg
Version: 4:0.8-1
Severity: normal


Dear Maintainer,


[16:16 - 1.25]
[user at debian 1] ~ > ffmpeg
Illegal instruction
[16:16 - 1.25]
[user at debian 2] ~ > gdb ffmpeg
GNU gdb (GDB) 7.3-debian
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabi".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/ffmpeg...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/ffmpeg
[Thread debugging using libthread_db enabled]

Program received signal SIGILL, Illegal instruction.
0x00018cf8 in ?? ()
(gdb) disassemble $pc, $pc+0x20
Cannot access memory at address 0x0
Dump of assembler code from 0x18cf8 to 0x18d18:
=> 0x00018cf8:  movw    lr, #2011       ; 0x7db
  0x00018cfc:  ldr     r2, [pc, #148]  ; 0x18d98
  0x00018d00:  ldr     r4, [pc, #148]  ; 0x18d9c
  0x00018d04:  ldr     r12, [r12]
  0x00018d08:  ldr     r3, [r3, r2]
  0x00018d0c:  add     r4, pc, r4
  0x00018d10:  ldr     r2, [pc, #136]  ; 0x18da0
  0x00018d14:  str     lr, [sp, #4]
End of assembler dump.


More system information:

Initializing cgroup subsys cpu
Linux version 3.1.10 (kelly at bbb.internal) (gcc version 4.4.1 (Sourcery
G++ Lite 2010q1-202) ) #1 PREEMPT Fri Jan 20 10:47:05 MST 2012
CPU: Feroceon 88FR131 [56251311] revision 1 (ARMv5TE), cr=00053977
CPU: VIVT data cache, VIVT instruction cache
Machine: Marvell GuruPlug Reference Board


-- System Information:
Debian Release: wheezy/sid
 APT prefers testing
 APT policy: (500, 'testing')
Architecture: armel (armv5tel)

Kernel: Linux 3.1.10 (PREEMPT)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=locale: Cannot
set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash

Versions of packages ffmpeg depends on:
ii  libav-tools  4:0.8-1

ffmpeg recommends no packages.

ffmpeg suggests no packages.

-- debconf information:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
       LANGUAGE = (unset),
       LC_ALL = (unset),
       LANG = "en_CA.UTF-8"
   are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory



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-- 
regards,
    Reinhard