160244 2016-07-27 06:52:10 -0700 [Wayland] PlatformDisplay crash when calling wl_proxy_destroy in exit handler 2016-09-02 22:52:14 -0700 1 1 1 Unclassified WebKit WebKitGTK Other PC Linux RESOLVED FIXED https://bugzilla.redhat.com/show_bug.cgi?id=1357119 https://bugzilla.redhat.com/show_bug.cgi?id=1325815 https://bugzilla.redhat.com/show_bug.cgi?id=1364284 https://bugzilla.redhat.com/show_bug.cgi?id=1330116 P2 Normal --- 81456 1 mcatanzaro webkit-unassigned bugs-noreply cgarcia mcatanzaro zan oldest_to_newest 1214875 0 mcatanzaro 2016-07-27 06:52:10 -0700 I have one report (meaning it's very rare) of a crash when the PlatformDisplayWayland destructor is called in an exit handler, inside wl_proxy_destroy: Thread 1 (Thread 0x7f3bca75dac0 (LWP 3269)): #0 wl_proxy_destroy (proxy=0x7f3b00000000) at src/wayland-client.c:438 display = <optimized out> #1 0x00007f3bc968d8e0 in wl_webkitgtk_destroy (wl_webkitgtk=<optimized out>) at /usr/src/debug/webkitgtk-2.12.3/x86_64-redhat-linux-gnu/DerivedSources/WebCore/WebKitGtkWaylandClientProtocol.h:70 No locals. #2 WebCore::PlatformDisplayWayland::~PlatformDisplayWayland (this=0x7f3b42aa06c0, __in_chrg=<optimized out>) at /usr/src/debug/webkitgtk-2.12.3/Source/WebCore/platform/graphics/wayland/PlatformDisplayWayland.cpp:111 No locals. #3 0x00007f3bc968d929 in WebCore::PlatformDisplayWayland::~PlatformDisplayWayland (this=0x7f3b42aa06c0, __in_chrg=<optimized out>) at /usr/src/debug/webkitgtk-2.12.3/Source/WebCore/platform/graphics/wayland/PlatformDisplayWayland.cpp:118 No locals. #4 0x00007f3bbe52a1e8 in __run_exit_handlers (status=status@entry=0, listp=0x7f3bbe8ad5d8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82 atfct = <optimized out> onfct = <optimized out> cxafct = <optimized out> f = <optimized out> #5 0x00007f3bbe52a235 in __GI_exit (status=status@entry=0) at exit.c:104 No locals. #6 0x00007f3bc86346b3 in IPC::Connection::didFailToSendSyncMessage (this=this@entry=0x7f3bb4de9000) at /usr/src/debug/webkitgtk-2.12.3/Source/WebKit2/Platform/IPC/Connection.cpp:873 No locals. Note it's triggered by didFailToSendSyncMessage. Full backtrace downstream. 1214876 1 mcatanzaro 2016-07-27 06:56:06 -0700 I take that back, we have 13 reports of this. Still relatively rare. I forgot to mention, this is very similar to bug #157973. 1217872 2 mcatanzaro 2016-08-05 07:55:44 -0700 Got two users who report this can be triggered by using Epiphany's bookmarks import feature. (Yeah....) It also crashes GNOME shell. 1217873 3 mcatanzaro 2016-08-05 08:01:25 -0700 Note that using exit-time destructors like this is a violation of our programming guidelines, and why we have NeverDestroyed. 1220826 4 mcatanzaro 2016-08-17 01:12:08 -0700 (In reply to comment #1) > I take that back, we have 13 reports of this. Still relatively rare. Now we're up to 271 reports 1220828 5 cgarcia 2016-08-17 01:14:51 -0700 This could be fixed by patch attached to bug #115803, since PlatformDisplayWayland no longer creates a wl_webkitgtk object. 1226089 6 cgarcia 2016-09-02 22:52:14 -0700 Please, reopen this if it still fails after r205116