Bug#801457: vlc: Segmentation fault playing a DVD with vdpau

2015-10-25 Thread Rémi Denis-Courmont 
reassign 801457 mesa-vdpau-drivers
thanks

Hello,

On Sunday 11 October 2015 02:20:59 Arthur Marsh wrote:
> When I removed the vdpau libraries for the GPU in use (r600 libraries for
> RS780 GPU), the video played alright, but did give these error messages:
> 
> Failed to open VDPAU backend libvdpau_r600.so: cannot open shared object
> file: No such file or directory [mpeg2video @ 0x7fffc81b8660] ac-tex
> damaged at 1 0
> [mpeg2video @ 0x7fffc81b8660] skipped MB in I frame at 24 9
> [mpeg2video @ 0x7fffc81b8660] skipped MB in I frame at 17 18
> [mpeg2video @ 0x7fffc81b8660] ac-tex damaged at 32 25
> [mpeg2video @ 0x7fffc81b8660] ac-tex damaged at 13 32
(...)

The libavcodec software MPEG2 Video decoder is complaining that the bit stream 
is corrupt.

The R600 driver is probably not robust against invalid bit stream and just 
crashes instead. This is ostensibly a bug in the R600 driver (or in Mesa 
VDPAU), arguably a security issue too...

As to why this occurs while playing a DVD, I don´t. Either there is some 
physical problem, or the content is malformatted (some DVDs are deliberately 
made to crash open-source players, though typically rather targetting 
libdvdnav).

-- 
Rémi Denis-Courmont
http://www.remlab.net/

Processed: Re: Bug#801457: vlc: Segmentation fault playing a DVD with vdpau

2015-10-25 Thread Debian Bug Tracking System 
Processing commands for cont...@bugs.debian.org:

> reassign 801457 mesa-vdpau-drivers
Bug #801457 [vlc] vlc: Segmentation fault playing a DVD with vdpau
Bug reassigned from package 'vlc' to 'mesa-vdpau-drivers'.
No longer marked as found in versions vlc/2.2.1-4.
Ignoring request to alter fixed versions of bug #801457 to the same values 
previously set
> thanks
Stopping processing here.

Please contact me if you need assistance.
-- 
801457: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801457
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