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Crash when connecting to server via socks5 proxy #6709

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vitoyucepi opened this issue Jan 20, 2025 · 2 comments
Open

Crash when connecting to server via socks5 proxy #6709

vitoyucepi opened this issue Jan 20, 2025 · 2 comments
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bug A bug (error) in the software needs-more-input triage This issue is waiting to be triaged by one of the project members

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@vitoyucepi
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Description

Mumble crashes when using the server connection menu or when connecting to the server using some socks5 proxies.
I don't know how to reproduce this reliably, but some proxies on the internet cause the mumble client to crash.

I reported this problem in the

Steps to reproduce

  1. Launch Mumble.
  2. Configure mumble to use a socks5 proxy.
    I used a free proxy list to trigger this problem, but the server is now offline.
  3. Add a server.
  4. Try to connect to it.
  5. Crash.

Mumble version

1.5.735

Mumble component

Client

OS

Linux

Reproducible?

Yes

Additional information

Thread 1 "mumble" received signal SIGSEGV, Segmentation fault.
0x00007ffff532ec1e in QVector<QRingChunk>::isEmpty (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qvector.h:90
90	    inline bool isEmpty() const { return d->size == 0; }
(gdb) bt
#0  0x00007ffff532ec1e in QVector<QRingChunk>::isEmpty (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qvector.h:90
#1  QRingBuffer::clear (this=0x10) at tools/qringbuffer.cpp:237
#2  0x00007ffff6faa021 in QSocks5SocketEnginePrivate::_q_emitPendingReadNotification (this=0x555557053040) at socket/qsocks5socketengine.cpp:922
#3  QSocks5SocketEngine::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qsocks5socketengine_p.cpp:117
#4  0x00007ffff54d55bc in QObject::event (this=0x55555704e0a0, e=0x555557133e60) at kernel/qobject.cpp:1347
#5  0x00007ffff6756581 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55555704e0a0, e=0x555557133e60) at kernel/qapplication.cpp:3640
#6  0x00007ffff54aee98 in QCoreApplication::notifyInternal2 (receiver=0x55555704e0a0, event=0x555557133e60) at kernel/qcoreapplication.cpp:1064
#7  0x00007ffff54aef03 in QCoreApplication::sendEvent (receiver=<optimized out>, event=<optimized out>) at kernel/qcoreapplication.cpp:1462
#8  0x00007ffff54af946 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x555555f88100) at kernel/qcoreapplication.cpp:1821
#9  0x00007ffff54fa0e0 in postEventSourceDispatch (s=0x555556189820) at kernel/qeventdispatcher_glib.cpp:277
#10 0x00007ffff4821559 in g_main_dispatch (context=0x7fffec000ed0) at ../glib/glib/gmain.c:3357
#11 0x00007ffff4884257 in g_main_context_dispatch_unlocked (context=0x7fffec000ed0) at ../glib/glib/gmain.c:4208
#12 g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7fffec000ed0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4273
#13 0x00007ffff4820a55 in g_main_context_iteration (context=0x7fffec000ed0, may_block=1) at ../glib/glib/gmain.c:4338
#14 0x00007ffff54fe16f in QEventDispatcherGlib::processEvents (this=0x7fffec00f6d0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#15 0x00007ffff54a6b5c in QEventLoop::exec (this=this@entry=0x7fffffffdd10, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#16 0x00007ffff6964fff in QDialog::exec (this=this@entry=0x5555565824a0) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#17 0x0000555555761fbe in MainWindow::openServerConnectDialog (this=0x555556124bc0, autoconnect=true) at /usr/src/debug/mumble/mumble-1.5.735/src/mumble/MainWindow.cpp:3957
#18 0x00005555556398b4 in MainWindow::on_qaServerConnect_triggered (this=<optimized out>, autoconnect=true) at /usr/src/debug/mumble/mumble-1.5.735/src/mumble/MainWindow.cpp:1540
#19 main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/mumble/mumble-1.5.735/src/mumble/main.cpp:799

Relevant log output

<X>2025-01-09 19:09:25.982 Loading settings from "/home/user/.config/Mumble/Mumble/mumble_settings.json"
<D>2025-01-09 19:09:27.470 JACK 3.0.0.0 (using PipeWire 1.2.7) from libjack.so
<X>2025-01-09 19:09:27.471 PipeWire 1.2.7 from libpipewire-0.3.so
ALSA lib pcm_dmix.c:1000:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2719:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2719:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2719:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:878:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:404:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_oss.c:404:(_snd_pcm_oss_open) Cannot open device /dev/dsp
ALSA lib pcm_a52.c:1036:(_snd_pcm_a52_open) a52 is only for playback
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:481:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib confmisc.c:160:(snd_config_get_card) Invalid field card
ALSA lib pcm_usb_stream.c:481:(_snd_pcm_usb_stream_open) Invalid card 'card'
ALSA lib pcm_dmix.c:1000:(snd_pcm_dmix_open) unable to open slave
<D>2025-01-09 19:09:27.577 PortAudio V19.7.0-devel, revision unknown from libportaudio.so
<D>2025-01-09 19:09:27.577 PulseAudio 17.0.0 from libpulse.so
<W>2025-01-09 19:09:27.579 Theme: "Mumble"
<W>2025-01-09 19:09:27.579 Style: "Lite"
<W>2025-01-09 19:09:27.579 --> qss: ":themes/Default/Lite.qss"
<W>2025-01-09 19:09:27.579 Locale is "en_DK" (System: "en_DK")
<W>2025-01-09 19:09:27.610 Database SQLite: "3.47.2"
<W>2025-01-09 19:09:27.656 Updating application palette
<W>2025-01-09 19:09:27.668 GlobalShortcutX: Using XI2 2.4
<W>2025-01-09 19:09:27.694 QMetaObject::connectSlotsByName: No matching signal for on_qtvUsers_customContextMenuRequested(QPoint,bool)
<W>2025-01-09 19:09:27.694 QMetaObject::connectSlotsByName: No matching signal for on_muteCuePopup_triggered()
<W>2025-01-09 19:09:27.742 SocketRPC: Removing old socket on "/run/user/1000/MumbleSocket"
<W>2025-01-09 19:09:27.745 AudioInput: Opus encoder set for low delay
<W>2025-01-09 19:09:27.745 AudioInput: 96000 bits/s, 48000 hz, 480 sample
<W>2025-01-09 19:09:27.745 PulseAudio: Starting input alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
<W>2025-01-09 19:09:27.746 PulseAudio: Starting echo: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
<W>2025-01-09 19:09:27.746 PulseAudio: Starting output: alsa_output.pci-0000_00_1f.3.analog-stereo
<W>2025-01-09 19:09:27.749 Public list disabled
<W>2025-01-09 19:09:27.768 AudioInput: Initialized mixer for 1 channel 48000 hz mic and 0 channel 48000 hz echo
<W>2025-01-09 19:09:27.768 AudioInput: Using Speex as noise canceller
warning: The VAD has been replaced by a hack pending a complete rewrite
<W>2025-01-09 19:09:27.772 AudioOutput: Initialized 2 channel 48000 hz mixer
<W>2025-01-09 19:09:27.773 AudioInput: Initialized mixer for 1 channel 48000 hz mic and 1 channel 48000 hz echo
<W>2025-01-09 19:09:27.795 AudioInput: Using Speex as noise canceller
warning: The VAD has been replaced by a hack pending a complete rewrite
<W>2025-01-09 19:09:27.795 AudioInput: ECHO CANCELLER ACTIVE
<W>2025-01-09 19:09:29.944 Database SQLite: "3.47.2"
<W>2025-01-09 19:09:29.944 OpenSSL Support: 1 (OpenSSL 3.4.0 22 Oct 2024)
<W>2025-01-09 19:09:29.976 ServerHandler: TLS cipher preference is "TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:AES256-SHA:AES128-SHA"
<W>2025-01-09 19:09:29.994 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db566786d0 invalid) "/org/a11y/atspi/accessible/2147483747"
<W>2025-01-09 19:09:29.997 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db566786d0 invalid) "/org/a11y/atspi/accessible/2147483747"
<W>2025-01-09 19:09:29.998 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db56618210 invalid) "/org/a11y/atspi/accessible/2147483756"
<W>2025-01-09 19:09:29.998 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db56618210 invalid) "/org/a11y/atspi/accessible/2147483756"
<W>2025-01-09 19:09:29.998 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db566f3970 invalid) "/org/a11y/atspi/accessible/2147483765"
<W>2025-01-09 19:09:29.998 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db566f3970 invalid) "/org/a11y/atspi/accessible/2147483765"
<W>2025-01-09 19:09:29.999 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db56617f10 invalid) "/org/a11y/atspi/accessible/2147483774"
<W>2025-01-09 19:09:29.999 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db56617f10 invalid) "/org/a11y/atspi/accessible/2147483774"
<W>2025-01-09 19:09:29.999 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db5666e100 invalid) "/org/a11y/atspi/accessible/2147483783"
<W>2025-01-09 19:09:29.999 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db5666e100 invalid) "/org/a11y/atspi/accessible/2147483783"
<W>2025-01-09 19:09:29.999 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db5665f330 invalid) "/org/a11y/atspi/accessible/2147483792"
<W>2025-01-09 19:09:29.999 WARNING Qt AtSpiAdaptor: Accessible invalid:  QAccessibleInterface(0x61db5665f330 invalid) "/org/a11y/atspi/accessible/2147483792"
<W>2025-01-09 19:09:30.112 Connection: Failed to set TOS for TCP Socket
<W>2025-01-09 19:09:30.115 ServerHandler: Failed to set TOS for UDP Socket
<W>2025-01-09 19:09:30.264 QUdpSocket::hasPendingDatagrams() called on a QUdpSocket when not in QUdpSocket::BoundState
Segmentation fault

Screenshots

No response
@vitoyucepi vitoyucepi added bug A bug (error) in the software triage This issue is waiting to be triaged by one of the project members labels Jan 20, 2025
@Krzmbrzl
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Hm... the crash backtrace looks like it is a Qt internal crash that you are seeing. So either this is a bug in Qt or Mumble would have to do something special when proxies are involved. However, shouldn't the Proxy be configured system-wide and from then on be essentially transparent for all applications (as it would be the job of the OS to send internet traffic through the proxy)?

@vitoyucepi
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Yes, this looks a lot like a Qt5 related problem, but the package maintainer at arch told me to file a bug here. Have a look at the discussion.
My best guess is that d == nullptr in d->size.

Personally, I don't like the system-wide proxies because I often route different programs through different proxies.

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@Krzmbrzl @vitoyucepi