1617866 - [Wayland] MPRIS crash at start

Status: RESOLVED WORKSFORME

(Core :: Widget: Gtk, defect)

Description

[Martin Stránský [:stransky] (ni? me)]

I've got this crash after start in debug mode after start:

Thread 1 "firefox" received signal SIGSEGV, Segmentation fault.
0x00007fffeb7e11e0 in mozilla::widget::MPRISServiceHandler::Identity (this=0x7fffb9595d40) at /home/komat/src-wayland/widget/gtk/MPRISServiceHandler.cpp:493
493 MOZ_ASSERT(mInitialized);
(gdb) bt
#0 0x00007fffeb7e11e0 in mozilla::widget::MPRISServiceHandler::Identity() const (this=0x7fffb9595d40) at /home/komat/src-wayland/widget/gtk/MPRISServiceHandler.cpp:493
#1 0x00007fffeb7efa61 in mozilla::widget::HandleGetProperty(_GDBusConnection*, char const*, char const*, char const*, char const*, _GError**, void*)
(aConnection=0x7ffff78ab400, aSender=0x7fffc1a66268 ":1.16", aObjectPath=0x7fffaf86c6e0 "/org/mpris/MediaPlayer2", aInterfaceName=0x7fffc4709dc0 "org.mpris.MediaPlayer2", aPropertyName=0x7fffc4bf7f00 "Identity", aError=0x0, aUserData=0x7fffb9595d40) at /home/komat/src-wayland/widget/gtk/MPRISServiceHandler.cpp:228
#2 0x00007ffff5dce006 in invoke_get_all_properties_in_idle_cb () at /lib64/libgio-2.0.so.0
#3 0x00007ffff5b23e3b in g_idle_dispatch () at /lib64/libglib-2.0.so.0
#4 0x00007ffff5b27520 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#5 0x00007ffff5b278b0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#6 0x00007ffff5b27953 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#7 0x00007fffeb81312d in nsAppShell::ProcessNextNativeEvent(bool) (this=0x7fffd5d78190, mayWait=false) at /home/komat/src-wayland/widget/gtk/nsAppShell.cpp:274
#8 0x00007fffeb7769ee in nsBaseAppShell::DoProcessNextNativeEvent(bool) (this=0x7fffd5d78190, mayWait=false) at /home/komat/src-wayland/widget/nsBaseAppShell.cpp:120
#9 0x00007fffeb776ee1 in nsBaseAppShell::OnProcessNextEvent(nsIThreadInternal*, bool) (this=0x7fffd5d78190, thr=0x7fffd5d83680, mayWait=false)
at /home/komat/src-wayland/widget/nsBaseAppShell.cpp:248
#10 0x00007fffe5e05f28 in nsThread::ProcessNextEvent(bool, bool*) (this=0x7fffd5d83680, aMayWait=false, aResult=0x7fffffffb797) at /home/komat/src-wayland/xpcom/threads/nsThread.cpp:1124
#11 0x00007fffe5e0e277 in NS_ProcessNextEvent(nsIThread*, bool) (aThread=0x7fffd5d83680, aMayWait=false) at /home/komat/src-wayland/xpcom/threads/nsThreadUtils.cpp:481
#12 0x00007fffe69c5388 in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) (this=0x7fffd5d8aa00, aDelegate=0x7fffd5d5d5c0) at /home/komat/src-wayland/ipc/glue/MessagePump.cpp:87
#13 0x00007fffe69140c7 in MessageLoop::RunInternal() (this=0x7fffd5d5d5c0) at /home/komat/src-wayland/ipc/chromium/src/base/message_loop.cc:315
#14 0x00007fffe6914045 in MessageLoop::RunHandler() (this=0x7fffd5d5d5c0) at /home/komat/src-wayland/ipc/chromium/src/base/message_loop.cc:308
#15 0x00007fffe6914003 in MessageLoop::Run() (this=0x7fffd5d5d5c0) at /home/komat/src-wayland/ipc/chromium/src/base/message_loop.cc:290
#16 0x00007fffeb776ab1 in nsBaseAppShell::Run() (this=0x7fffd5d78190) at /home/komat/src-wayland/widget/nsBaseAppShell.cpp:137
#17 0x00007fffedfc7ba3 in nsAppStartup::Run() (this=0x7fffd5d7e510) at /home/komat/src-wayland/toolkit/components/startup/nsAppStartup.cpp:271
#18 0x00007fffee164c6d in XREMain::XRE_mainRun() (this=0x7fffffffc230) at /home/komat/src-wayland/toolkit/xre/nsAppRunner.cpp:4566
#19 0x00007fffee165dd0 in XREMain::XRE_main(int, char**, mozilla::BootstrapConfig const&) (this=0x7fffffffc230, argc=4, argv=0x7fffffffd598, aConfig=...)
at /home/komat/src-wayland/toolkit/xre/nsAppRunner.cpp:4701
#20 0x00007fffee1666b9 in XRE_main(int, char**, mozilla::BootstrapConfig const&) (argc=4, argv=0x7fffffffd598, aConfig=...) at /home/komat/src-wayland/toolkit/xre/nsAppRunner.cpp:4752
#21 0x00007fffee17a5b7 in mozilla::BootstrapImpl::XRE_main(int, char**, mozilla::BootstrapConfig const&) (this=0x7ffff78026e0, argc=4, argv=0x7fffffffd598, aConfig=...)
at /home/komat/src-wayland/toolkit/xre/Bootstrap.cpp:45
#22 0x000055555556db2d in do_main(int, char**, char**) (argc=4, argv=0x7fffffffd598, envp=0x7fffffffd5c0) at /home/komat/src-wayland/browser/app/nsBrowserApp.cpp:217
#23 0x000055555556d325 in main(int, char**, char**) (argc=4, argv=0x7fffffffd598, envp=0x7fffffffd5c0) at /home/komat/src-wayland/browser/app/nsBrowserApp.cpp:331

Comment 1

[Martin Stránský [:stransky] (ni? me)]

Started firefox as MOZ_ENABLE_WAYLAND=1 MOZ_FORCE_DISABLE_E10S=1 ./firefox

Comment 2

[Marc Streckfuß [:MeFisto94]]

So the Assert is https://searchfox.org/mozilla-central/source/widget/gtk/MPRISServiceHandler.cpp#493
which basically means we failed at initializing, using MOZ_LOG=MediaControl:5 might tell why.

What distro did you test it on, so I can try to reproduce it?
Also it's really strange, because someone seems to query the Property, so we should've successfully attached to the bus.

Thanks for reporting!

Comment 3

[Martin Stránský [:stransky] (ni? me)]

No longer reproducible, Thanks.