Pipewire-Jack Segmentation Fault

Pipewire 1.2.0. I get this message in Arch:

MOD Desktop DEBUG: jacklib syms 0x7bd9a4fa9de0 0x7bd9a4fae5e0 | 257 | using pipewire with filename '/usr/lib/libjack.so.0'
--------------------------------------------------------
/usr/lib/libjack.so.0 loaded successfully!
[1]    14472 segmentation fault (core dumped)  ./mod-desktop.run

In Pipewire 1.0.4, this works without problems.

[xpufx]

Have the exact same thing. Opensuse Tumbleweed. Pipewire 1.2.0. I don't know the version but it worked on my desktop before as well.

[Riebeck-one]

Exact same error as @naregderlevonian. It happens since I updated to pipewire 1.2.0.

[igorlakic]

Same issue on Debian testing.

[magillos]

Same here for me with the stand-alone app, but VST plugin seems to be working fine (it has its own bugs though).

[Inqb8tr-jp]

Same with pipewire-1.2.2 on Manjaro Linux.

[jotuel]

MOD Desktop DEBUG: jacklib syms 0x78b806b87e10 (nil) | 65 | using regular jack
QSocketNotifier: Can only be used with threads started with QThread
--------------------------------------------------------
libjack.so.0 loaded successfully!
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
--------------------------------------------------------
----------- loadSettings 654
----------- updateDeviceDetails 1028 | 3 4
----------- setStopped 782

compared to running with pw-jack

MOD Desktop DEBUG: jacklib syms 0x74264f844770 0x74264f848f00 | 257 | using pipewire with filename '/usr/lib/x86_64-linux-gnu/pipewire-0.3/jack/libjack.so.0'
QSocketNotifier: Can only be used with threads started with QThread
--------------------------------------------------------
/usr/lib/x86_64-linux-gnu/pipewire-0.3/jack/libjack.so.0 loaded successfully!
Segmentation fault

so I think it needs to use the libraries that it came with for now.

[falkTX]

I dont have the newest pipewire on any of my systems, this needs debugging from other people.

There are debug builds in github actions, but now they expired.. I can push some commits to have them regenerated, then we see how to debug this...

[magillos]

Here is what gdb outputs:

Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Detaching after fork from child process 40234]
[Detaching after fork from child process 40235]
ERROR: This system has no python serial support
Using FakeHMI => <mod.development.FakeHMI object at 0x7ffff5ac86d0>
cc start socket missing
last state file does not exist or is corrupt
DEBUG:root:[host] popped from queue: transport 0 4.000000 120.000000
[New Thread 0x7ffff5a1e6c0 (LWP 40258)]
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
[Thread 0x7ffff5a1e6c0 (LWP 40258) exited]
last state file does not exist or is corrupt
WARNING:tornado.general:Connect error on fd 11: ECONNREFUSED
WARNING:tornado.general:Connect error on fd 10: ECONNREFUSED
DEBUG:root:[host] popped from queue: feature_enable processing 0
last state file does not exist or is corrupt
INFO:root:[host] HMI initialized right away
Readsock none
Writesock none
Host failed to initialize, is the backend running?
jack client deactivated NOT
jack client deactivated NOT
[Inferior 1 (process 40227) exited with code 01]

[AngelBePro]

Not sure if this is helpful but this is what I got using gdb run and gdb backtrace. Using pipewire 1.2.6

Thread 1 "mod-desktop" received signal SIGSEGV, Segmentation fault.
Downloading 30.70 K source file /usr/src/debug/pipewire/build/../pipewire/spa/plugins/support/loop.c
loop_queue_invoke (object=0x55555566ef40, func=0x7ffff1a94a80 <do_data_loop_setup>, seq=0, data=0x0, size=0, block=false, user_data=0x7ffff1767e90) at ../pipewire/spa/plugins/support/loop.c:308                
308             in_thread = (impl->thread == 0 || pthread_equal(impl->thread, pthread_self()));
(gdb) backtrace
#0  loop_queue_invoke (object=0x55555566ef40, func=0x7ffff1a94a80 <do_data_loop_setup>, seq=0, data=0x0, size=0, block=false, user_data=0x7ffff1767e90) at ../pipewire/spa/plugins/support/loop.c:308
#1  loop_invoke (object=0x7ffff176dff8, func=0x7ffff1a94a80 <do_data_loop_setup>, seq=0, data=0x0, size=0, block=false, user_data=0x7ffff1767e90) at ../pipewire/spa/plugins/support/loop.c:435
#2  0x00007ffff1aa3dee in data_loop_start (impl=impl@entry=0x7ffff1767e90, loop=loop@entry=0x7ffff1768358) at ../pipewire/src/pipewire/context.c:295
#3  0x00007ffff1aa40f8 in acquire_data_loop (impl=impl@entry=0x7ffff1767e90, name=name@entry=0x0, klass=0x7ffff176e1d0 "data.rt", klass@entry=0x0) at ../pipewire/src/pipewire/context.c:696
#4  0x00007ffff1aa4349 in pw_context_acquire_loop (context=context@entry=0x7ffff1767e90, props=props@entry=0x0) at ../pipewire/src/pipewire/context.c:734
#5  0x00007ffff1aa4846 in context_get_support (context=0x7ffff1767e90, n_support=0x7fffffffcdc0, info=0x0) at ../pipewire/src/pipewire/context.c:636
#6  pw_context_get_support (context=0x7ffff1767e90, n_support=n_support@entry=0x7fffffffcdc0) at ../pipewire/src/pipewire/context.c:648
#7  0x00007ffff243daef in jack_client_open (client_name=0x555555431350 "MOD Desktop", options=JackNoStartServer, status=0x7fffffffceec) at ../pipewire/pipewire-jack/src/pipewire-jack.c:4108
#8  0x000055555541cb04 in ?? ()
#9  0x0000555555419eea in ?? ()
#10 0x0000555555412751 in ?? ()
#11 0x000055555541979b in ?? ()
#12 0x000055555540edc0 in ?? ()
#13 0x00007ffff6634e08 in __libc_start_call_main (main=main@entry=0x55555540ed05, argc=argc@entry=1, argv=argv@entry=0x7fffffffda88) at ../sysdeps/nptl/libc_start_call_main.h:58
#14 0x00007ffff6634ecc in __libc_start_main_impl (main=0x55555540ed05, argc=1, argv=0x7fffffffda88, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffda78)
    at ../csu/libc-start.c:360
#15 0x000055555540eefa in ?? ()

[CarloCattano]

Same issue here with pw 1.2.6

/usr/lib/libjack.so.0 loaded successfully!
[New Thread 0x7fffeac006c0 (LWP 29285)]

Thread 1 "mod-desktop" received signal SIGSEGV, Segmentation fault.
Downloading 30.70 K source file /usr/src/debug/pipewire/build/../pipewire/spa/plugins/support/loop.c
loop_queue_invoke (object=0x55555566ef20, func=0x7ffff0ac5a80 <do_data_loop_setup>, seq=0, data=0x0, size=0, block=false,
    user_data=0x7ffff0798e90) at ../pipewire/spa/plugins/support/loop.c:308
308		in_thread = (impl->thread == 0 || pthread_equal(impl->thread, pthread_self()));

#0  loop_queue_invoke (object=0x55555566ef20, func=0x7ffff0ac5a80 <do_data_loop_setup>, seq=0, data=0x0, size=0, block=false,
    user_data=0x7ffff0798e90) at ../pipewire/spa/plugins/support/loop.c:308
#1  loop_invoke (object=0x7ffff079eff8, func=0x7ffff0ac5a80 <do_data_loop_setup>, seq=0, data=0x0, size=0, block=false,
    user_data=0x7ffff0798e90) at ../pipewire/spa/plugins/support/loop.c:435
#2  0x00007ffff0ad4dee in data_loop_start (impl=impl@entry=0x7ffff0798e90, loop=loop@entry=0x7ffff0799358)
    at ../pipewire/src/pipewire/context.c:295
#3  0x00007ffff0ad50f8 in acquire_data_loop (impl=impl@entry=0x7ffff0798e90, name=name@entry=0x0, klass=0x7ffff079f1d0 "data.rt",
    klass@entry=0x0) at ../pipewire/src/pipewire/context.c:696
#4  0x00007ffff0ad5349 in pw_context_acquire_loop (context=context@entry=0x7ffff0798e90, props=props@entry=0x0)
    at ../pipewire/src/pipewire/context.c:734
#5  0x00007ffff0ad5846 in context_get_support (context=0x7ffff0798e90, n_support=0x7fffffffcd60, info=0x0)
    at ../pipewire/src/pipewire/context.c:636
#6  pw_context_get_support (context=0x7ffff0798e90, n_support=n_support@entry=0x7fffffffcd60) at ../pipewire/src/pipewire/context.c:648
#7  0x00007ffff3317aef in jack_client_open (client_name=0x555555431350 "MOD Desktop", options=JackNoStartServer, status=0x7fffffffce8c)
    at ../pipewire/pipewire-jack/src/pipewire-jack.c:4108
#8  0x000055555541cb04 in ?? ()
#9  0x0000555555419eea in ?? ()
#10 0x0000555555412751 in ?? ()
#11 0x000055555541979b in ?? ()
#12 0x000055555540edc0 in ?? ()
#13 0x00007ffff6634e08 in __libc_start_call_main (main=main@entry=0x55555540ed05, argc=argc@entry=1, argv=argv@entry=0x7fffffffda28)
    at ../sysdeps/nptl/libc_start_call_main.h:58
#14 0x00007ffff6634ecc in __libc_start_main_impl (main=0x55555540ed05, argc=1, argv=0x7fffffffda28, init=<optimized out>,
    fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffda18) at ../csu/libc-start.c:360
#15 0x000055555540eefa in ?? ()

[falkTX]

those logs make it very much appear like a pipewire bug, some internal data consistency is failing.
maybe it does not like that multiple clients are created from different threads?

[nasedase]

tested on two different distros with the same issue. Must be pipewire-jack.

[nasedase]

I tested different versions, the last version that doesn't have the segfault error is 0.7

Is there any recent news on this issue?
Are there any workarounds available besides downgrading Pipewire?

[Inqb8tr-jp]

I tested MOD Desktop on pipewire 1.4.1 with Manjaro Linux.
And I find there is no JACK/Pipewire entry on MOD Desktop.

I had hoped that pipewire would support MOD Desktop in a future release...

Works well on Manjaro with Pipewire1.4.1