256641 2023-05-11 05:50:38 -0700 [GStreamer] Crash when destroying GstGLContext 2023-05-12 13:24:28 -0700 1 1 1 Unclassified WebKit Media WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 255721 P2 Normal --- 1 mcatanzaro webkit-unassigned bugs-noreply mcatanzaro philn oldest_to_newest 1954679 0 mcatanzaro 2023-05-11 05:50:38 -0700 I've hit this SIGSEGV crash three times in the past two days: (gdb) bt #0 0x00007effb5dd9e7d in gst_object_unref (object=0x100000010) at ../gst/gstobject.c:260 #1 0x00007effbbaca8fa in WTF::GRefPtr<_GstGLContext>::operator=(_GstGLContext*) (this=0x7effa9010650, optr=0x0 [_GstGLContext]) at WTF/Headers/wtf/glib/GRefPtr.h:162 #2 WebCore::PlatformDisplay::terminateEGLDisplay() (this=0x7effa90105e0) at /buildstream/gnome/sdk/webkitgtk-6.0.bst/Source/WebCore/platform/graphics/PlatformDisplay.cpp:347 #3 0x00007effbbacb848 in WebCore::PlatformDisplay::initializeEGLDisplay()::$_4::operator()() const (this=<optimized out>) at /buildstream/gnome/sdk/webkitgtk-6.0.bst/Source/WebCore/platform/graphics/PlatformDisplay.cpp:336 #4 WebCore::PlatformDisplay::initializeEGLDisplay()::$_4::__invoke() () at /buildstream/gnome/sdk/webkitgtk-6.0.bst/Source/WebCore/platform/graphics/PlatformDisplay.cpp:333 #5 0x00007effb90418e6 in __run_exit_handlers (status=0, listp=0x7effb91fe658 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:113 #6 0x00007effb9041a4e in __GI_exit (status=<optimized out>) at exit.c:143 #7 0x00007effb9029551 in __libc_start_call_main (main=main@entry=0x558f84428150 <main>, argc=argc@entry=3, argv=argv@entry=0x7fffb0798598) at ../sysdeps/nptl/libc_start_call_main.h:74 #8 0x00007effb902960b in __libc_start_main_impl (main=0x558f84428150 <main>, argc=3, argv=0x7fffb0798598, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:389 #9 0x0000558f84428085 in _start () This backtrace is using 2.41.3 (Epiphany Tech Preview). The crash occurs when setting m_gstGLContext = nullptr; at the top of PlatformDisplay::terminateEGLDisplay. Notice that m_gstGLContext contains 0x100000010 which is suspicious and probably garbage? 1954984 1 philn 2023-05-12 08:11:55 -0700 Any steps to reproduce would be welcome. 1954987 2 mcatanzaro 2023-05-12 08:26:53 -0700 It's very unlikely that I'll figure out how to reproduce this. 1955068 3 mcatanzaro 2023-05-12 13:24:28 -0700 *** This bug has been marked as a duplicate of bug 255721 ***