bug#52375: webkitgtk page crashes on core-updates-frozen

[Jack Hill]

On Wed, 8 Dec 2021, Maxim Cournoyer wrote:

> Hello!
>
> Would you be able to run it in GDB to gather a backtrace?  That may
> provide clues.
>
> Thanks!

Yes! I was albe to get the following backtrace. Thanks to hikiko [0] 
for tips on using GDB with WebKit browsers

[0] https://eleni.mutantstargoat.com/hikiko/webkit-gdb/


$ gdb .midori-real 1979
GNU gdb (GDB) 11.1
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from .midori-real...
(No debugging symbols found in .midori-real)
Attaching to program: 
/gnu/store/kz9inh53yvpzxv818jq6naiwp6ms85l0-midori-9.0/bin/.midori-real, 
process 1979
[New LWP 1981]
[New LWP 1983]
[New LWP 1984]
[New LWP 1985]
[New LWP 1986]
[New LWP 1987]
[New LWP 1988]
[New LWP 1992]
[New LWP 1993]
[New LWP 1994]
[New LWP 2001]

warning: Unable to find libthread_db matching inferior's thread library, thread 
debugging will not be available.
0x00007f70beab5d6f in poll () from 
/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/libc.so.6
(gdb) c
Continuing.
[New LWP 2395]
[New LWP 2411]

Thread 1 "WebKitWebProces" received signal SIGABRT, Aborted.
0x00007f70bea04030 in raise () from 
/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/libc.so.6
(gdb) bt
#0  0x00007f70bea04030 in raise () from 
/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/libc.so.6
#1  0x00007f70be9ee526 in abort () from 
/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/libc.so.6
#2  0x00007f70c4089a52 in WebCore::makeGStreamerElement(char const*, char 
const*) [clone .cold] () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#3  0x00007f70c63be439 in 
WebCore::MediaPlayerPrivateGStreamer::createVideoSink() () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#4  0x00007f70c63c351f in 
WebCore::MediaPlayerPrivateGStreamer::createGSTPlayBin(WTF::URL const&) () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#5  0x00007f70c63c442b in WebCore::MediaPlayerPrivateGStreamer::load(WTF::String 
const&) () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#6  0x00007f70c5c7e19c in 
WebCore::MediaPlayer::loadWithNextMediaEngine(WebCore::MediaPlayerFactory 
const*) () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#7  0x00007f70c5c7e76b in WebCore::MediaPlayer::load(WTF::URL const&, 
WebCore::ContentType const&, WTF::String const&) ()
   from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#8  0x00007f70c570d73d in WebCore::HTMLMediaElement::loadResource(WTF::URL const&, 
WebCore::ContentType&, WTF::String const&) ()
   from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#9  0x00007f70c570e3e1 in WebCore::HTMLMediaElement::loadNextSourceChild() () 
from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#10 0x00007f70c54fc3c2 in WebCore::EventLoop::run() () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#11 0x00007f70c558a80d in WebCore::WindowEventLoop::didReachTimeToRun() () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#12 0x00007f70c5bdaadc in WebCore::ThreadTimers::sharedTimerFiredInternal() () 
from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#13 0x00007f70c2a830f5 in 
WTF::RunLoop::TimerBase::TimerBase(WTF::RunLoop&)::{lambda(void*)#1}::_FUN(void*)
 ()
   from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libjavascriptcoregtk-4.0.so.18
#14 0x00007f70c2a8333f in WTF::RunLoop::{lambda(_GSource*, int (*)(void*), 
void*)#1}::_FUN(_GSource*, int (*)(void*), void*) ()
   from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libjavascriptcoregtk-4.0.so.18
#15 0x00007f70bef5236f in g_main_context_dispatch () from 
/gnu/store/qqs98rxwjrji6aaf6dqwp7q4m545g2sn-glib-2.70.0/lib/libglib-2.0.so.0
#16 0x00007f70bef526e8 in g_main_context_iterate.constprop () from 
/gnu/store/qqs98rxwjrji6aaf6dqwp7q4m545g2sn-glib-2.70.0/lib/libglib-2.0.so.0
#17 0x00007f70bef529cb in g_main_loop_run () from 
/gnu/store/qqs98rxwjrji6aaf6dqwp7q4m545g2sn-glib-2.70.0/lib/libglib-2.0.so.0
#18 0x00007f70c2a83470 in WTF::RunLoop::run() () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libjavascriptcoregtk-4.0.so.18
#19 0x00007f70c47e5c81 in WebKit::WebProcessMain(int, char**) () from 
/gnu/store/77vf3q1v7aa8h2av7s10fn95b0crh7zc-webkitgtk-with-libsoup2-2.34.1/lib/libwebkit2gtk-4.0.so.37
#20 0x00007f70be9ef7dd in __libc_start_main () from 
/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/libc.so.6
#21 0x000000000040107a in main ()
(gdb)