Bug#856487: pulseaudio: SIGSEGV upon streaming to bluetooth headset

Felipe Sateler fsateler at debian.org
Fri Mar 3 14:06:44 UTC 2017

Control: tags -1 - help
Control: reassign -1 libsbc1 1.3-1+b2
Control: retitle -1 libsbc1: build with PIE causes stack corruption
Control: affects -1 pulseaudio
Control: severity -1 serious

On Fri, Mar 3, 2017 at 10:52 AM, Linus Lüssing <linus.luessing at c0d3.blue> wrote:
> On Thu, Mar 02, 2017 at 08:36:29PM -0300, Felipe Sateler wrote:
>> Indeed. However, from what I can see the most likely (only?) way to
>> get there is via a sbc_encode that is called in module-bluez5-device.
>> However, that part of the code does not look changed since 9.0. Have
>> you confirmed downgrading to 9.0 fixes the issue?
> Oh, sorry, good point. I think we are narrowing it down now:
> It's actually not the pulsaudio upgrade from 9.0 to 10 but the
> update of libsbc1 from 1.3-1 to 1.3-1+b2, which I did during the
> same "apt-get dist-upgrade".
> Downgrading libsbc1 to 1.3-1 is enough to make the crash vanish!

OK. That rebuild was done to enable PIE. So it looks like PIE
conflicts with the hand-written asm code, at least for armhf. It seems
to me PIE will have to be disabled there.


Felipe Sateler

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