Bug#846782: Re: Bug#846144: gobject-introspection randomly hangs liferea build

Paul Gevers elbrus at debian.org
Fri Dec 9 13:51:51 UTC 2016


On 09-12-16 00:31, Emilio Pozuelo Monfort wrote:
> Just attach to it with gdb when it is hanged, then get the backtrace.

I did what you said above. Please find the backtrace attached.

paul at testavoira ~ $ ps aux | grep 32485
paul     32485  0.0  0.6 1660456 33340 pts/2   Sl+  14:37   0:00

I assume this is more interesting with debugging symbols of webkit
installed as well, right? Unfortunately, it seems they are still not
available in stretch, and I haven't been successful yet in connecting
properly with the hanging process my pbuilder environment. So I ran
g-ir-scanner.sh instead in stretch against a fresh created liferea (in sid).

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paul at testavoira ~ $ gdb -p 32485
GNU gdb (Debian 7.11.1-2+b1) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
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For bug reporting instructions, please see:
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Attaching to process 32485
[New LWP 32486]
[New LWP 32487]
[New LWP 32488]
[New LWP 32489]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fd515b3218f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
(gdb) bt
#0  0x00007fd515b3218f in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fd50cf4339c in std::condition_variable::wait(std::unique_lock<std::mutex>&) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x00007fd51203c33a in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) ()
   from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#3  0x00007fd512064738 in WTF::WorkQueue::platformInvalidate() () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#4  0x00007fd51203f677 in WTF::WorkQueue::~WorkQueue() () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#5  0x00007fd51203f689 in WTF::WorkQueue::~WorkQueue() () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#6  0x00007fd51882efc2 in ?? () from /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#7  0x00007fd51882f059 in ?? () from /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#8  0x00007fd5187dc029 in ?? () from /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#9  0x00007fd518995635 in ?? () from /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#10 0x00007fd51606ac7a in g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007fd51897c304 in ?? () from /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#12 0x00007fd51606ac7a in g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007fd5157bc920 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#14 0x00007fd5157bc97a in exit () from /lib/x86_64-linux-gnu/libc.so.6
#15 0x00007fd5162b7477 in ?? () from /usr/lib/x86_64-linux-gnu/libgirepository-1.0.so.1
#16 0x00007fd515d97054 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007fd515d974bf in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fd515d99062 in g_option_context_parse () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x000055ec3a2770a5 in main (argc=<optimized out>, argv=<optimized out>) at main.c:209
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