.
Thread 14 (LWP 28667):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef3734543 in mergeFlags (this=<optimized out>, flags=3072) at ../Source/JavaScriptCore/dfg/DFGNode.h:151
        newFlags = 0
#2  mergeDefaultFlags (node=..., this=0x3284040) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:714
        changed = false
#3  JSC::DFG::PredictionPropagationPhase::propagate (this=0x3284040, node=...) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:525
        flags = 48240
        changed = 2
#4  0x00007f7f28ccff6e in start_thread (arg=0x7f7eacdb6700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7eacdb6700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140182042666752, -6088430243955808372, 0, 140184126533728, 140184122136352, 4096, 6160032886023317388, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = -210549296
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 13 (LWP 28668):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef3734543 in mergeFlags (this=<optimized out>, flags=3072) at ../Source/JavaScriptCore/dfg/DFGNode.h:151
        newFlags = 0
#2  mergeDefaultFlags (node=..., this=0x2c8f4c0) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:714
        changed = false
#3  JSC::DFG::PredictionPropagationPhase::propagate (this=0x2c8f4c0, node=...) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:525
        flags = 48240
        changed = 4
#4  0x00007f7f28ccff6e in start_thread (arg=0x7f7ea7fff700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7ea7fff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140181961176832, -6088430243955808372, 0, 140184126533728, 140184122136352, 4096, 6160012849464010636, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = -210549296
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 12 (LWP 28671):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef3734543 in mergeFlags (this=<optimized out>, flags=3072) at ../Source/JavaScriptCore/dfg/DFGNode.h:151
        newFlags = 0
#2  mergeDefaultFlags (node=..., this=0x2ed43b0) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:714
        changed = false
#3  JSC::DFG::PredictionPropagationPhase::propagate (this=0x2ed43b0, node=...) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:525
        flags = 48240
        changed = 6
#4  0x00007f7f28ccff6e in start_thread (arg=0x7f7ea67fc700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7ea67fc700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140181935998720, -6088430243955808372, 0, 140184126533728, 140184122136352, 4096, 6160009548244772748, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = -210549296
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 11 (LWP 28669):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef3734543 in mergeFlags (this=<optimized out>, flags=3072) at ../Source/JavaScriptCore/dfg/DFGNode.h:151
        newFlags = 0
#2  mergeDefaultFlags (node=..., this=0x37d3f20) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:714
        changed = false
#3  JSC::DFG::PredictionPropagationPhase::propagate (this=0x37d3f20, node=...) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:525
        flags = 48240
        changed = 5
#4  0x00007f7f28ccff6e in start_thread (arg=0x7f7ea77fe700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7ea77fe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140181952784128, -6088430243955808372, 0, 140184126533728, 140184122136352, 4096, 6160011750489253772, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = -210549296
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 10 (LWP 28670):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef3734543 in mergeFlags (this=<optimized out>, flags=3072) at ../Source/JavaScriptCore/dfg/DFGNode.h:151
        newFlags = 0
#2  mergeDefaultFlags (node=..., this=0x2f2fe20) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:714
        changed = false
#3  JSC::DFG::PredictionPropagationPhase::propagate (this=0x2f2fe20, node=...) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:525
        flags = 48240
        changed = true
#4  0x00007f7f28ccff6e in start_thread (arg=0x7f7ea6ffd700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7ea6ffd700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140181944391424, -6088430243955808372, 0, 140184126533728, 140184122136352, 4096, 6160010651514496908, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = -210549296
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 9 (LWP 28652):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007f7f26e78705 in g_cond_wait_until (cond=cond@entry=0x3b8cf58, mutex=mutex@entry=0x3b8cf50, end_time=end_time@entry=1211414893931) at /build/buildd/glib2.0-2.38.1/./glib/gthread-posix.c:876
        ts = {tv_sec = 1211414, tv_nsec = 893931000}
        status = <optimized out>
#2  0x00007f7f26e0ec51 in g_async_queue_pop_intern_unlocked (queue=0x3b8cf50, wait=wait@entry=1, end_time=1211414893931) at /build/buildd/glib2.0-2.38.1/./glib/gasyncqueue.c:424
        retval = <optimized out>
        __FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f7f26e0f218 in g_async_queue_timeout_pop_unlocked (queue=<optimized out>, timeout=timeout@entry=500000) at /build/buildd/glib2.0-2.38.1/./glib/gasyncqueue.c:572
        end_time = <optimized out>
#4  0x00007f7f26e5da88 in g_thread_pool_wait_for_new_task (pool=0x34517d0) at /build/buildd/glib2.0-2.38.1/./glib/gthreadpool.c:264
        task = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.38.1/./glib/gthreadpool.c:298
        task = 0x3dc0450
        pool = 0x34517d0
#6  0x00007f7f26e5d0f5 in g_thread_proxy (data=0x27b6050) at /build/buildd/glib2.0-2.38.1/./glib/gthread.c:798
        thread = 0x27b6050
#7  0x00007f7f28ccff6e in start_thread (arg=0x7f7f0d4ee700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7f0d4ee700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140183660848896, -6088430243955808372, 0, 140184126533728, 140734705802064, 4096, 6160808217814558604, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 8 (LWP 28672):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef3734543 in mergeFlags (this=<optimized out>, flags=3072) at ../Source/JavaScriptCore/dfg/DFGNode.h:151
        newFlags = 0
#2  mergeDefaultFlags (node=..., this=0x3444b00) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:714
        changed = false
#3  JSC::DFG::PredictionPropagationPhase::propagate (this=0x3444b00, node=...) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:525
        flags = 48240
        changed = 3
#4  0x00007f7f28ccff6e in start_thread (arg=0x7f7ea5ffb700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7ea5ffb700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140181927606016, -6088430243955808372, 0, 140184126533728, 140184122136352, 4096, 6160017245363038092, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = -210549296
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 7 (LWP 28664):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef465d09b in ?? () at ../Source/WebCore/dom/Position.h:115 from /tmp/apport_sandbox_mHFFUO/usr/lib/libwebkitgtk-3.0.so.0
No locals.
#2  0x00007f7eeebcae90 in ?? ()
No symbol table info available.
#3  0x00007f7eeebc2dc8 in ?? ()
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 6 (LWP 28666):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007f7ef393acdc in SLL_Next (t=0x1) at ../Source/WTF/wtf/FastMalloc.cpp:760
No locals.
#2  SLL_PopRange (end=<synthetic pointer>, start=<synthetic pointer>, N=4096, head=0x7f7eeec33170) at ../Source/WTF/wtf/FastMalloc.cpp:792
        i = -517
        tmp = 0x1
#3  PopRange (end=<synthetic pointer>, start=<synthetic pointer>, N=4096, this=0x7f7eeec33170) at ../Source/WTF/wtf/FastMalloc.cpp:2251
No locals.
#4  ReleaseToCentralCache (N=<optimized out>, cl=4743643132697441642, this=0x949d9) at ../Source/WTF/wtf/FastMalloc.cpp:2979
        tail = <optimized out>
        head = <optimized out>
        src = 0x7f7eeec33170
        batch_size = 4096
        tail = <optimized out>
        head = <optimized out>
#5  WTF::TCMalloc_ThreadCache::Cleanup (this=0x949d9) at ../Source/WTF/wtf/FastMalloc.cpp:2929
        cl = 4743643132697441642
#6  0x0000000000000008 in ?? ()
No symbol table info available.
#7  0x00007f7eeec14018 in ?? ()
No symbol table info available.
#8  0x00007f7eeec33098 in ?? ()
No symbol table info available.
#9  0x00007f7eeec33174 in ?? ()
No symbol table info available.
#10 0x00007f7ef3733710 in index (this=<synthetic pointer>) at ../Source/JavaScriptCore/dfg/DFGEdge.h:60
No locals.
#11 operator[] (nodeUse=<error reading variable: Cannot access memory at address 0x1a1>, this=<optimized out>) at ../Source/JavaScriptCore/dfg/DFGGraph.h:84
No locals.
#12 JSC::DFG::PredictionPropagationPhase::propagate (this=0x24487735, node=...) at ../Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp:649
        flags = 12664
        changed = <optimized out>
#13 0x00007f7ef393a8d1 in DLL_Prepend (span=0xfffffffffffffdfc, list=0x1) at ../Source/WTF/wtf/FastMalloc.cpp:1199
No locals.
#14 Carve (released=<optimized out>, n=0, span=0x0, this=0x7f7ef3bfab58 <WTF::pageheap_memory>) at ../Source/WTF/wtf/FastMalloc.cpp:1826
        leftover = 0xfffffffffffffdfc
        listpair = 0x1
        dst = 0x1
        extra = 688959584
#15 New (n=0, this=<optimized out>) at ../Source/WTF/wtf/FastMalloc.cpp:1701
        ll = <optimized out>
        released = <optimized out>
        result = 0x0
        s = <optimized out>
        result = <optimized out>
#16 Populate (this=0x3264320) at ../Source/WTF/wtf/FastMalloc.cpp:2846
        h = {lock_ = 0x7f7ef3c1cf58 <WTF::pageheap_lock>}
        npages = 0
        tail = <optimized out>
        limit = <optimized out>
        nptr = <optimized out>
        ptr = <optimized out>
        num = <optimized out>
#17 WTF::TCMalloc_Central_FreeList::FetchFromSpansSafe (this=0x3264320) at ../Source/WTF/wtf/FastMalloc.cpp:2812
        t = <optimized out>
#18 0x00007f7f2910b060 in ?? ()
No symbol table info available.
#19 0x00007f7f28cd9720 in ?? () from /tmp/apport_sandbox_mHFFUO/lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#20 0x0000000000001000 in ?? ()
No symbol table info available.
#21 0x557cd645a824e78c in ?? ()
No symbol table info available.
#22 0x557fdd6a8b2ae78c in ?? ()
No symbol table info available.
#23 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 5 (LWP 28640):
#0  0x00007f7f289edf7d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f7f26e386a4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f7f180010e0, timeout=-1, context=0x1760320) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:4006
        poll_func = 0x7f7f26e47270 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x1760320, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f7f180010e0
#3  0x00007f7f26e387ac in g_main_context_iteration (context=context@entry=0x1760320, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3773
        retval = <optimized out>
#4  0x00007f7f1f056a9d in dconf_gdbus_worker_thread (user_data=0x1760320) at dconf-gdbus-thread.c:81
        context = 0x1760320
#5  0x00007f7f26e5d0f5 in g_thread_proxy (data=0x16f1ed0) at /build/buildd/glib2.0-2.38.1/./glib/gthread.c:798
        thread = 0x16f1ed0
#6  0x00007f7f28ccff6e in start_thread (arg=0x7f7f1f03f700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7f1f03f700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140183957927680, -6088430243955808372, 0, 140184126533728, 140734705800352, 4096, 6160839579128883084, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 4 (LWP 28642):
#0  0x00007f7f289edf7d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f7f26e386a4 in g_main_context_poll (priority=2147483647, n_fds=2, fds=0x7f7f080008c0, timeout=-1, context=0x249d1a0) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:4006
        poll_func = 0x7f7f26e47270 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x249d1a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f7f080008c0
#3  0x00007f7f26e387ac in g_main_context_iteration (context=0x249d1a0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3773
        retval = <optimized out>
#4  0x00007f7f26e387f9 in glib_worker_main (data=<optimized out>) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:5472
No locals.
#5  0x00007f7f26e5d0f5 in g_thread_proxy (data=0x249d8a0) at /build/buildd/glib2.0-2.38.1/./glib/gthread.c:798
        thread = 0x249d8a0
#6  0x00007f7f28ccff6e in start_thread (arg=0x7f7f0f0fe700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7f0f0fe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140183690274560, -6088430243955808372, 0, 140184126533728, 140734705803520, 4096, 6160804360933926796, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 3 (LWP 28663):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f7ef3925a8d in remove (position=<optimized out>, this=<optimized out>) at ../Source/WTF/wtf/Vector.h:1130
        spot = <optimized out>
#2  optimizeDotStarWrappedExpressions (this=0x1) at ../Source/JavaScriptCore/yarr/YarrPattern.cpp:806
        lastExpressionTerm = 19
        startsWithBOL = 32
        endsWithEOL = 96
        termIndex = 0
        firstExpressionTerm = 0
        alternatives = <optimized out>
        alternative = 0x7f7ef3c09710 <WTF::central_cache+2744>
        terms = @0x7f7ef3c09710: {m_size = 0, m_buffer = {<WTF::VectorBufferBase<JSC::Yarr::PatternTerm>> = {m_buffer = 0x100000000, m_capacity = 0}, <No data fields>}}
#3  JSC::Yarr::YarrPattern::compile (this=<optimized out>, patternString=...) at ../Source/JavaScriptCore/yarr/YarrPattern.cpp:848
        constructor = {m_pattern = @0x7f7f0dcef700, m_alternative = 0xab818cf37544e78c, m_characterClassConstructor = {m_isCaseInsensitive = false, m_matches = {m_size = 64567760, m_buffer = {<WTF::VectorBufferBase<unsigned short>> = {m_buffer = 0x7f7f28cd9720 <default_attr>, m_capacity = 19}, <No data fields>}}, m_ranges = {m_size = 6160809316789315468, m_buffer = {<WTF::VectorBufferBase<JSC::Yarr::CharacterRange>> = {m_buffer = 0x557fdd6a8b2ae78c, m_capacity = 0}, <No data fields>}}, m_matchesUnicode = {m_size = 0, m_buffer = {<WTF::VectorBufferBase<unsigned short>> = {m_buffer = 0x0, m_capacity = 0}, <No data fields>}}, m_rangesUnicode = {m_size = 0, m_buffer = {<WTF::VectorBufferBase<JSC::Yarr::CharacterRange>> = {m_buffer = 0x0, m_capacity = 0}, <No data fields>}}}, m_invertCharacterClass = false, m_invertParentheticalAssertion = false}
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 28641):
#0  0x00007f7f289edf7d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007f7f26e386a4 in g_main_context_poll (priority=2147483647, n_fds=5, fds=0x7f7f100011c0, timeout=-1, context=0x7f7f1800f230) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:4006
        poll_func = 0x7f7f26e47270 <g_poll>
#2  g_main_context_iterate (context=0x7f7f1800f230, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3707
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 5
        allocated_nfds = 5
        fds = 0x7f7f100011c0
#3  0x00007f7f26e38b0a in g_main_loop_run (loop=0x7f7f1800f1c0) at /build/buildd/glib2.0-2.38.1/./glib/gmain.c:3906
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f7f26743b66 in gdbus_shared_thread_func (user_data=0x7f7f1800f200) at /build/buildd/glib2.0-2.38.1/./gio/gdbusprivate.c:278
        data = 0x7f7f1800f200
#5  0x00007f7f26e5d0f5 in g_thread_proxy (data=0x1767590) at /build/buildd/glib2.0-2.38.1/./glib/gthread.c:798
        thread = 0x1767590
#6  0x00007f7f28ccff6e in start_thread (arg=0x7f7f1e83e700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f7f1e83e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140183949534976, -6088430243955808372, 0, 140184126533728, 140183957924640, 4096, 6160838480154126220, 6160886264937244556}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f7f289fa9cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 1 (LWP 28638):
#0  0x00007f7f26e3f3d9 in g_logv (log_domain=0x7f7f24d3fd86 "Gdk", log_level=G_LOG_LEVEL_ERROR, format=<optimized out>, args=args@entry=0x7fff5a259908) at /build/buildd/glib2.0-2.38.1/./glib/gmessages.c:989
        domain = 0x0
        data = 0x0
        depth = 1
        log_func = 0x7f7f26e3eb70 <g_log_default_handler>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = 0
        test_level = <optimized out>
        was_fatal = <optimized out>
        was_recursion = <optimized out>
        msg = 0x3425310 "The program 'software-center' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadDrawable (invalid Pixmap or Window parameter)'.\n  (Details: serial 3330 "...
        msg_alloc = 0x3425310 "The program 'software-center' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadDrawable (invalid Pixmap or Window parameter)'.\n  (Details: serial 3330 "...
        i = 2
#1  0x00007f7f26e3f522 in g_log (log_domain=log_domain@entry=0x7f7f24d3fd86 "Gdk", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7f7f24d4bb08 "%s") at /build/buildd/glib2.0-2.38.1/./glib/gmessages.c:1025
        args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff5a2599e0, reg_save_area = 0x7fff5a259920}}
#2  0x00007f7f24d1e930 in _gdk_x11_display_error_event (display=display@entry=0x173a0a0, error=error@entry=0x7fff5a259aa0) at /build/buildd/gtk+3.0-3.8.6/./gdk/x11/gdkdisplay-x11.c:2557
        buf = "BadDrawable (invalid Pixmap or Window parameter)", '\000' <repeats 15 times>
        msg = <optimized out>
        display_x11 = 0x173a0a0
        tmp_list = <optimized out>
        ignore = 0
#3  0x00007f7f24d292e1 in gdk_x_error (xdisplay=0x172aa00, error=0x7fff5a259aa0) at /build/buildd/gtk+3.0-3.8.6/./gdk/x11/gdkmain-x11.c:303
        error_display = 0x173a0a0
        manager = <optimized out>
        displays = 0x0
        error = 0x7fff5a259aa0
        xdisplay = 0x172aa00
#4  0x00007f7f247ce5ab in _XError (dpy=dpy@entry=0x172aa00, rep=rep@entry=0x28751b0) at ../../src/XlibInt.c:1463
        rtn_val = <optimized out>
        event = {type = 0, xany = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881}, xkey = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, root = 0, subwindow = 0, time = 140184118637776, x = 24317136, y = 0, x_root = 43948624, y_root = 0, state = 193, keycode = 0, same_screen = 563820189}, xbutton = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, root = 0, subwindow = 0, time = 140184118637776, x = 24317136, y = 0, x_root = 43948624, y_root = 0, state = 193, button = 0, same_screen = 563820189}, xmotion = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, root = 0, subwindow = 0, time = 140184118637776, x = 24317136, y = 0, x_root = 43948624, y_root = 0, state = 193, is_hint = 0 '\000', same_screen = 563820189}, xcrossing = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, root = 0, subwindow = 0, time = 140184118637776, x = 24317136, y = 0, x_root = 43948624, y_root = 0, mode = 193, detail = 0, same_screen = 563820189, focus = 32639, state = 1512414320}, xfocus = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, mode = 0, detail = 0}, xexpose = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, x = 0, y = 0, width = 0, height = 0, count = 681063632}, xgraphicsexpose = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, drawable = 15881, x = 0, y = 0, width = 0, height = 0, count = 681063632, major_code = 32639, minor_code = 24317136}, xnoexpose = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, drawable = 15881, major_code = 0, minor_code = 0}, xvisibility = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, state = 0}, xcreatewindow = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, parent = 15881, window = 0, x = 0, y = 0, width = 681063632, height = 32639, border_width = 24317136, override_redirect = 0}, xdestroywindow = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, event = 15881, window = 0}, xunmap = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, event = 15881, window = 0, from_configure = 0}, xmap = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, event = 15881, window = 0, override_redirect = 0}, xmaprequest = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, parent = 15881, window = 0}, xreparent = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, event = 15881, window = 0, parent = 0, x = 681063632, y = 32639, override_redirect = 24317136}, xconfigure = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, event = 15881, window = 0, x = 0, y = 0, width = 681063632, height = 32639, border_width = 24317136, above = 43948624, override_redirect = 193}, xgravity = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, event = 15881, window = 0, x = 0, y = 0}, xresizerequest = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, width = 0, height = 0}, xconfigurerequest = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, parent = 15881, window = 0, x = 0, y = 0, width = 681063632, height = 32639, border_width = 24317136, above = 43948624, detail = 193, value_mask = 140184001394333}, xcirculate = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, event = 15881, window = 0, place = 0}, xcirculaterequest = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, parent = 15881, window = 0, place = 0}, xproperty = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, atom = 0, time = 0, state = 681063632}, xselectionclear = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, selection = 0, time = 0}, xselectionrequest = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, owner = 15881, requestor = 0, selection = 0, target = 140184118637776, property = 24317136, time = 43948624}, xselection = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, requestor = 15881, selection = 0, target = 0, property = 140184118637776, time = 24317136}, xcolormap = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, colormap = 0, new = 0, state = 0}, xclient = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, message_type = 0, format = 0, data = {b = "\320\064\230(\177\177\000\000\320\fs\001\000\000\000\000P\232\236\002", s = {13520, 10392, 32639, 0, 3280, 371, 0, 0, -26032, 670}, l = {140184118637776, 24317136, 43948624, 193, 140184001394333}}}, xmapping = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, request = 0, first_keycode = 0, count = 0}, xerror = {type = 0, display = 0x172aa00, resourceid = 180355423, serial = 3330, error_code = 9 '\t', request_code = 62 '>', minor_code = 0 '\000'}, xkeymap = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, window = 15881, key_vector = '\000' <repeats 16 times>"\320, \064\230(\177\177\000\000\320\fs\001\000\000\000"}, xgeneric = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, extension = 15881, evtype = 0}, xcookie = {type = 0, serial = 24291840, send_event = 180355423, display = 0xd02, extension = 15881, evtype = 0, cookie = 0, data = 0x0}, pad = {0, 24291840, 180355423, 3330, 15881, 0, 0, 140184118637776, 24317136, 43948624, 193, 140184001394333, 1512414320, 24321424, 32, 42422704, 0, 24317160, 0, 140183147931104, 140183243567568, 140184001390792, 24317136, 140184001394652}}
        async = <optimized out>
        next = <optimized out>
#5  0x00007f7f247cb627 in handle_error (dpy=0x172aa00, err=0x28751b0, in_XReply=<optimized out>) at ../../src/xcb_io.c:213
        ext = <optimized out>
        ret_code = 0
#6  0x00007f7f247cb6d5 in handle_response (dpy=dpy@entry=0x172aa00, response=0x28751b0, in_XReply=in_XReply@entry=0) at ../../src/xcb_io.c:325
        async = <optimized out>
        next = <optimized out>
#7  0x00007f7f247cc16d in _XReadEvents (dpy=dpy@entry=0x172aa00) at ../../src/xcb_io.c:441
        response = <optimized out>
        serial = 175
#8  0x00007f7f23ef28c1 in _cairo_xlib_shm_surface_flush (abstract_surface=0x3297920, flags=<optimized out>) at /build/buildd/cairo-1.12.16/src/cairo-xlib-surface-shm.c:696
        shm = 0x3297920
        display = 0x3ddcc80
        dpy = 0x172aa00
        status = <optimized out>
#9  0x00007f7f23ec223f in INT_cairo_surface_flush (surface=0x3297920) at /build/buildd/cairo-1.12.16/src/cairo-surface.c:1517
        status = <optimized out>
#10 0x00007f7f23eef0ed in _cairo_xlib_surface_discard_shm (surface=surface@entry=0x3da1c90) at /build/buildd/cairo-1.12.16/src/cairo-xlib-surface.c:370
No locals.
#11 0x00007f7f23eef397 in _cairo_xlib_surface_finish (abstract_surface=0x3da1c90) at /build/buildd/cairo-1.12.16/src/cairo-xlib-surface.c:402
        surface = 0x3da1c90
        status = CAIRO_STATUS_SUCCESS
        display = 0x3ddcc80
#12 0x00007f7f23ec1696 in _cairo_surface_finish (surface=0x3da1c90) at /build/buildd/cairo-1.12.16/src/cairo-surface.c:1007
        status = <optimized out>
#13 0x00007f7f23ec1fc0 in INT_cairo_surface_destroy (surface=0x3da1c90) at /build/buildd/cairo-1.12.16/src/cairo-surface.c:945
        surface = 0x3da1c90
#14 0x00007f7f23ea6138 in INT_cairo_pattern_destroy (pattern=0x2ff1d10) at /build/buildd/cairo-1.12.16/src/cairo-pattern.c:1131
        type = CAIRO_PATTERN_TYPE_SURFACE
        __PRETTY_FUNCTION__ = "cairo_pattern_destroy"
#15 0x00007f7f23e845f7 in _cairo_gstate_fini (gstate=0x2119260) at /build/buildd/cairo-1.12.16/src/cairo-gstate.c:225
No locals.
#16 0x00007f7f23e8127d in _cairo_default_context_fini (cr=cr@entry=0x2119230) at /build/buildd/cairo-1.12.16/src/cairo-default-context.c:75
No locals.
#17 0x00007f7f23e812f9 in _cairo_default_context_destroy (abstract_cr=0x2119230) at /build/buildd/cairo-1.12.16/src/cairo-default-context.c:93
        cr = 0x2119230
#18 0x00007f7ef403c6c4 in ?? () from /tmp/apport_sandbox_mHFFUO/usr/lib/libwebkitgtk-3.0.so.0
No symbol table info available.
#19 0x0000012c00000351 in ?? ()
No symbol table info available.
#20 0x00007f7ef500baff in RefPtr (o=..., this=0x7fff5a259dd0) at ../Source/WTF/wtf/RefPtr.h:43
No locals.
#21 String (this=0x7fff5a259dd0) at ../Source/WTF/wtf/text/WTFString.h:108
No locals.
#22 lookupIconName (MIMEType=...) at ../Source/WebCore/platform/graphics/gtk/IconGtk.cpp:85
        media = {m_impl = {m_ptr = 0x7f7eeec0d6f8}}
        subtype = {m_impl = {m_ptr = 0x7f7eeec42000}}
        iconTheme = <optimized out>
        iconName = {m_impl = {m_ptr = 0x0}}
        pos = <optimized out>
#23 WebCore::Icon::createIconForFiles (filenames=...) at ../Source/WebCore/platform/graphics/gtk/IconGtk.cpp:103
        MIMEType = {m_impl = {m_ptr = 0x0}}
        iconName = {m_impl = {m_ptr = 0x0}}
        icon = <optimized out>
#24 0x00007f7ef46f6c11 in ?? () at ../Source/WebCore/html/HTMLFrameOwnerElement.cpp:50 from /tmp/apport_sandbox_mHFFUO/usr/lib/libwebkitgtk-3.0.so.0
No locals.
#25 0x00007f7eeec0d6c0 in ?? ()
No symbol table info available.
#26 0x00007f7ef4ea73cf in WebCore::JSXMLHttpRequestUploadPrototype::getOwnPropertyDescriptor (object=0x7fff5a25a370, exec=0xc8, propertyName=..., descriptor=...) at DerivedSources/WebCore/JSXMLHttpRequestUpload.cpp:119
No locals.
#27 0x0000000000000000 in ?? ()
No symbol table info available.