nearly full tmpfs-mounted /dev/shm causes bus errors

[ametalguitarist]

I'm sorry but there are way too many crash reports for me to keep track of what happened and what I was doing.
I hope the files that the Report a Problem thing files helps.
Thanks for all the hard work in making linux better.

Ubuntu 9.10

ProblemType: Crash
Architecture: i386
Date: Fri Oct 30 21:02:24 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/jackd
Package: jackd 0.116.1-4ubuntu2
ProcCmdline: /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p128 -n2 -D -Chw:0
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
Signal: 7
SourcePackage: jack-audio-connection-kit
StacktraceTop:
 pa_shm_create_rw () from /usr/lib/libpulsecommon-0.9.19.so
 pa_mempool_new () from /usr/lib/libpulsecommon-0.9.19.so
 pa_context_new_with_proplist () from /usr/lib/libpulse.so.0
 pa_context_new () from /usr/lib/libpulse.so.0
 conf_pulse_hook_load_if_running ()
Title: jackd crashed with signal 7 in pa_shm_create_rw()
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin audio cdrom dialout lpadmin plugdev root sambashare video

[Apport retracing service (apport)]

StacktraceTop:pa_shm_create_rw (m=0x96ccbc8, size=<value optimized out>, shared=true,
pa_mempool_new (shared=123, size=0)
pa_context_new_with_proplist (mainloop=0x96c1d08,
pa_context_new (mainloop=0x96c1d08,
conf_pulse_hook_load_if_running (root=0x9696348,

[Daniel T Chen (crimsun)]

See also http://www.pulseaudio.org/ticket/806

[Daniel T Chen (crimsun)]

Just to clarify, upstream has noted (see ticket 806) that it isn't feasible to do client-side handling of sigbus.

[zettberlin (zettberlin)]

So if I understand this correctly: if this error occurs, one cannot hope to run jackd on Ubuntu without getting more RAM.

I understand, that this is not really an error in pulse-audio. PA acts correctly and sensible.

But from Ubuntus side there should be a workaround and this workaround should be a sufficient, reliable way to disable pulse audio altogether if such errors occur. It should allow such an action *without* a need to de-install/remove PA. And this must handle all applications, that call PA for themselfs automatically, in this case alsa.

Quite complicated, I suspect ;-)

[Nathanael Anderson (wirelessdreamer)]

its not just a jack/ram issue. On Ubuntu installs with the same hardware
with the same ram jack runs fine, and without issue. I've also manually
disabled pulse and jack+applications work fine. I have pulse installed, but
disabled on a gentoo, and jack works fine on the same hadware as the ubuntu
system is on, so the problem is not caused because the system is lacking
ram, unless pulse is abusing ram.

On Mon, May 31, 2010 at 5:56 AM, zettberlin <email address hidden> wrote:

> So if I understand this correctly: if this error occurs, one cannot hope
> to run jackd on Ubuntu without getting more RAM.
>
> I understand, that this is not really an error in pulse-audio. PA acts
> correctly and sensible.
>
> But from Ubuntus side there should be a workaround and this workaround
> should be a sufficient, reliable way to disable pulse audio altogether
> if such errors occur. It should allow such an action *without* a need to
> de-install/remove PA. And this must handle all applications, that call
> PA for themselfs automatically, in this case alsa.
>
> Quite complicated, I suspect ;-)
>
> --
> nearly full tmpfs-mounted /dev/shm causes bus errors
> https://bugs.launchpad.net/bugs/470073
> You received this bug notification because you are a direct subscriber
> of a duplicate bug.
>
> Status in “pulseaudio” package in Ubuntu: Won't Fix
>
> Bug description:
> I'm sorry but there are way too many crash reports for me to keep track of
> what happened and what I was doing.
> I hope the files that the Report a Problem thing files helps.
> Thanks for all the hard work in making linux better.
>
> Ubuntu 9.10
>
> ProblemType: Crash
> Architecture: i386
> Date: Fri Oct 30 21:02:24 2009
> DistroRelease: Ubuntu 9.10
> ExecutablePath: /usr/bin/jackd
> Package: jackd 0.116.1-4ubuntu2
> ProcCmdline: /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p128 -n2 -D -Chw:0
> ProcEnviron:
> PATH=(custom, no user)
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
> Signal: 7
> SourcePackage: jack-audio-connection-kit
> StacktraceTop:
> pa_shm_create_rw () from /usr/lib/libpulsecommon-0.9.19.so
> pa_mempool_new () from /usr/lib/libpulsecommon-0.9.19.so
> pa_context_new_with_proplist () from /usr/lib/libpulse.so.0
> pa_context_new () from /usr/lib/libpulse.so.0
> conf_pulse_hook_load_if_running ()
> Title: jackd crashed with signal 7 in pa_shm_create_rw()
> Uname: Linux 2.6.31-14-generic i686
> UserGroups: adm admin audio cdrom dialout lpadmin plugdev root sambashare
> video
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/470073/+subscribe
>