Bug#1012746: libwebkit2gtk-4.0-37: 2.36.3-1~deb11u1 fails messily over glx

[Markus Demleitner]

On Tue, Jun 21, 2022 at 10:46:53AM +0000, Alberto Garcia wrote:
> If the web process crashes and you have the systemd-coredump package
> you should be able to see the core dump with coredumpctl.

Oh, right: WebKitWebProcess does indeed coredump once I ulimit -c
unlimited.  Here's a dump (I've not pulled the dbgsyms for GLX, X11,
gdk, and glib, hoping they're irrelevant for the problem at hand):

#0  0xf3b1d15b in g_log_writer_default ()
   from /usr/lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xf3b1b2d8 in g_log_structured_array ()
   from /usr/lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xf3b1bcc9 in g_log_structured_standard ()
   from /usr/lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xf1eac916 in ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
#4  0xf1eb9fb4 in ?? () from /usr/lib/i386-linux-gnu/libgdk-3.so.0
#5  0xf0c5b208 in _XError () from /usr/lib/i386-linux-gnu/libX11.so.6
#6  0xeae96c62 in ?? () from /usr/lib/i386-linux-gnu/libGLX_mesa.so.0
#7  0xeae8fac8 in ?? () from /usr/lib/i386-linux-gnu/libGLX_mesa.so.0
#8  0xf17b1e24 in ?? () from /usr/lib/i386-linux-gnu/libGLX.so.0
#9  0xf6420528 in createGLXARBContext ()
    at ../Source/WebCore/platform/graphics/glx/GLContextGLX.cpp:109
#10 0xf6421fdf in WebCore::GLContextGLX::createWindowContext ()
    at ../Source/WebCore/platform/graphics/glx/GLContextGLX.cpp:195
#11 0xf6423f5b in WebCore::GLContextGLX::createContext ()
    at ../Source/WebCore/platform/graphics/glx/GLContextGLX.cpp:280
#12 0xf63d49b7 in WebCore::GLContext::createContextForWindow ()
    at ../Source/WebCore/platform/graphics/GLContext.cpp:97
#13 0xf478b73b in WebKit::ThreadedCompositor::createGLContext ()
    at ../Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/ThreadedCompositor.cpp:96
--Type <RET> for more, q to quit, c to continue without paging--
#14 0xf478b86f in operator() ()
    at ../Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/ThreadedCompositor.cpp:73
#15 call () at WTF/Headers/wtf/Function.h:53
#16 0xf4789bc7 in WTF::Function<void ()>::operator()() const ()
    at WTF/Headers/wtf/Function.h:82
#17 operator() ()
    at ../Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/CompositingRunLoop.cpp:90
#18 call () at WTF/Headers/wtf/Function.h:53
#19 0xf36f845f in ?? ()
   from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-4.0.so.18
#20 0xf37588e8 in ?? ()
   from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-4.0.so.18
#21 0xf375941c in ?? ()
   from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-4.0.so.18
#22 0xf3b147a4 in g_main_context_dispatch ()
   from /usr/lib/i386-linux-gnu/libglib-2.0.so.0
#23 0xf3b14b69 in ?? () from /usr/lib/i386-linux-gnu/libglib-2.0.so.0
#24 0xf3b14ec1 in g_main_loop_run ()
   from /usr/lib/i386-linux-gnu/libglib-2.0.so.0
#25 0xf3759581 in WTF::RunLoop::run() ()
   from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-4.0.so.18
#26 0xf478860c in operator() ()
    at ../Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/CompositingRunLoop.cpp:49
#27 call () at WTF/Headers/wtf/Function.h:53
#28 0xf36fad99 in ?? ()
   from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-4.0.so.18
#29 0xf375c0c8 in ?? ()
   from /usr/lib/i386-linux-gnu/libjavascriptcoregtk-4.0.so.18
#30 0xf088b0b4 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#31 0xf3feb296 in clone () from /lib/i386-linux-gnu/libc.so.6

Thanks,

         Markus