[Webkit-unassigned] [Bug 179304] [GTK] Many webpages can crash the browser in WebCore::CoordinatedGraphicsLayer::transformedVisibleRect

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Nov 20 19:56:43 PST 2017


https://bugs.webkit.org/show_bug.cgi?id=179304

--- Comment #12 from antoyo <bouanto at zoho.com> ---
Here's the complete backtrace:

Thread 27 (Thread 0x7f50f244d700 (LWP 181)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f50f418d700, timeout=<optimized out>, context=0x7f50f4003e30) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50f418d700
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f50f4003e30, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50f418d700
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f50f4303c70) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f50f244d700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f50f244d700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139985638708992, -1270168254981307517, 140723383535518, 140723383535519, 139985638708992, 139985667780544, 1224574728515912579, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 26 (Thread 0x7f50d1dff700 (LWP 175)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f50c4001330, timeout=<optimized out>, context=0x7f50c40008c0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50c4001330
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f50c40008c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50c4001330
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f50c4001200) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f50d1dff700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f50d1dff700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139985095227136, -1270168254981307517, 140723383543806, 140723383543807, 0, 237624242240, 1224652597346730883, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 25 (Thread 0x7f50d43ff700 (LWP 166)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f50cc001330, timeout=<optimized out>, context=0x7f50cc0008c0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50cc001330
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f50cc0008c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50cc001330
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f50cc001200) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f50d43ff700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f50d43ff700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139985135073024, -1270168254981307517, 140723383543806, 140723383543807, 0, 237624242240, 1224658919538590595, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7f50f1c4c700 (LWP 130)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=2, fds=0x7f50e8001340, timeout=<optimized out>, context=0x7f50e8001200) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f50e8001340
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f50e8001200, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f50e8001340
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f50e80010c0) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f50f1c4c700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f50f1c4c700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139985630316288, -1270168254981307517, 140723383543198, 140723383543199, 139985630316288, 139985667780944, 1224582427781661571, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7f510943b700 (LWP 119)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f50e4001670, timeout=<optimized out>, context=0x7f50e40013b0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50e4001670
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f50e40013b0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50e4001670
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f50e4001540) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f510943b700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f510943b700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139986024511232, -1270168254981307517, 140723383543646, 140723383543647, 139986024511232, 18543392, 1224247051502257027, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7f50f144b700 (LWP 118)):
#0  0x000000375420d498 in pthread_cond_timedwait ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f516bf6136a in WTF::ThreadCondition::timedWait(WTF::Mutex&, double) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:587
#2  0x00007f516bf36c13 in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, WTF::TimeWithDynamicClockType const&) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ParkingLot.cpp:598
#3  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ParkingLot.h:85
#4  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Condition.h:81
#5  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Condition.h:121
#6  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/AutomaticThread.cpp:207
#7  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#9  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#10 0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#11 0x0000003754207404 in start_thread (arg=0x7f50f144b700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f50f144b700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139985621923584, -1270168254981307517, 140723383542126, 140723383542127, 139985621923584, 139985667781344, 1224581328806904707, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#12 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7f50da7fc700 (LWP 113)):
#0  0x000000375420d498 in pthread_cond_timedwait ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f516bf6136a in WTF::ThreadCondition::timedWait(WTF::Mutex&, double) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:587
#2  0x00007f516bf36c13 in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, WTF::TimeWithDynamicClockType const&) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ParkingLot.cpp:598
#3  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ParkingLot.h:85
#4  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Condition.h:81
#5  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Condition.h:121
#6  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/AutomaticThread.cpp:207
#7  0x00007f516bf27066 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#9  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#10 0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#11 0x0000003754207404 in start_thread (arg=0x7f50da7fc700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f50da7fc700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139985239918336, -1270168254981307517, 140723383542670, 140723383542671, 0, 237624242240, 1224627585067811715, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#12 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f50f3fff700 (LWP 43)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=2, fds=0x7f50ec001330, timeout=<optimized out>, context=0x7f50ec0008c0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f50ec001330
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f50ec0008c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f50ec001330
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f50ec001200) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f50f3fff700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f50f3fff700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139985667749632, -1270168254981307517, 140723383548190, 140723383548191, 0, 237624242240, 1224578105433949059, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f5108c3a700 (LWP 40)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f50f80010c0, timeout=<optimized out>, context=0x11a6320) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50f80010c0
#2  0x00007f51674ad626 in g_main_context_iterate (context=context at entry=0x11a6320, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50f80010c0
#3  0x00007f51674ad74c in g_main_context_iteration (context=context at entry=0x11a6320, may_block=may_block at entry=1)
    at gmain.c:3947
        retval = <optimized out>
#4  0x00007f5158d3f0cd in dconf_gdbus_worker_thread (user_data=0x11a6320) at dconf-gdbus-thread.c:82
        context = 0x11a6320
#5  0x00007f51674d54f5 in g_thread_proxy (data=0x11cda80) at gthread.c:784
        thread = 0x11cda80
#6  0x0000003754207404 in start_thread (arg=0x7f5108c3a700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f5108c3a700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139986016118528, -1270168254981307517, 140723383546942, 140723383546943, 0, 237624242240, 1224245950380016515, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f510affb700 (LWP 38)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=2, fds=0x7f5100001730, timeout=<optimized out>, context=0x7f51000008c0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f5100001730
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f51000008c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7f5100001730
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f5100001600) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f510affb700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f510affb700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139986053609216, -1270168254981307517, 140723383549646, 140723383549647, 0, 237624242240, 1224241657023333251, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f510b7fc700 (LWP 37)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f50fc001730, timeout=<optimized out>, context=0x7f50fc0008c0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50fc001730
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f50fc0008c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f50fc001730
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f50fc001600) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f510b7fc700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f510b7fc700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139986062001920, -1270168254981307517, 140723383549582, 140723383549583, 0, 237624242240, 1224242755998090115, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f510bffd700 (LWP 36)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f5104001730, timeout=<optimized out>, context=0x7f51040008c0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f5104001730
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f51040008c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f5104001730
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f5104001600) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f510bffd700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f510bffd700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139986070394624, -1270168254981307517, 140723383549582, 140723383549583, 0, 237624242240, 1224243852825363331, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f5158cd5700 (LWP 35)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f5150001330, timeout=<optimized out>, context=0x7f51500008c0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f5150001330
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x7f51500008c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f5150001330
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x7f5150001200) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f516bf61784 in call() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/generic/WorkQueueGeneric.cpp:44
#6  0x00007f516bf61784 in call() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:101
#7  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#8  0x00007f516bf3a78b in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Threading.cpp:129
#9  0x00007f516bf60859 in wtfThreadEntryPoint() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/ThreadingPthreads.cpp:228
#10 0x0000003754207404 in start_thread (arg=0x7f5158cd5700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f5158cd5700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139987358930688, -1270168254981307517, 140723383549582, 140723383549583, 0, 237624242240, 1224351454641030019, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f5159745700 (LWP 32)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=3, fds=0x7f514c0010c0, timeout=<optimized out>, context=0x1073070) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 3
        fds = 0x7f514c0010c0
#2  0x00007f51674ad626 in g_main_context_iterate (context=0x1073070, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 3
        fds = 0x7f514c0010c0
#3  0x00007f51674ad9c2 in g_main_loop_run (loop=0x107d800) at gmain.c:4082
        __func__ = "g_main_loop_run"
#4  0x00007f5167a96896 in gdbus_shared_thread_func (user_data=0x107d750) at gdbusprivate.c:275
        data = 0x107d750
#5  0x00007f51674d54f5 in g_thread_proxy (data=0x102db70) at gthread.c:784
        thread = 0x102db70
#6  0x0000003754207404 in start_thread (arg=0x7f5159745700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f5159745700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139987369875200, -1270168254981307517, 140723383545550, 140723383545551, 0, 237624242240, 1224352768901022595, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f5159f46700 (LWP 31)):
#0  0x0000003753adf56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f51674ad626 in g_main_context_iterate (priority=<optimized out>, n_fds=1, fds=0x7f51540008e0, timeout=<optimized out>, context=0x10707f0) at gmain.c:4187
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f51674bd360 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f51540008e0
#2  0x00007f51674ad626 in g_main_context_iterate (context=context at entry=0x10707f0, block=block at entry=1, dispatch=d
ispatch at entry=1, self=<optimized out>) at gmain.c:3881
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7f51540008e0
#3  0x00007f51674ad74c in g_main_context_iteration (context=0x10707f0, may_block=may_block at entry=1)
    at gmain.c:3947
        retval = <optimized out>
#4  0x00007f51674ad791 in glib_worker_main (data=<optimized out>) at gmain.c:5742
#5  0x00007f51674d54f5 in g_thread_proxy (data=0x102dad0) at gthread.c:784
        thread = 0x102dad0
#6  0x0000003754207404 in start_thread (arg=0x7f5159f46700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f5159f46700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139987378267904, -1270168254981307517, 140723383545134, 140723383545135, 0, 237624242240, 1224353867875779459, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f515c155700 (LWP 22)):
#0  0x000000375420d498 in pthread_cond_timedwait ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f516bf6c468 in bmalloc::Scavenger::threadRunLoop() ()
    at /usr/include/c++/6.2.0/x86_64-unknown-linux/bits/gthr-default.h:871
#2  0x00007f516bf6c468 in bmalloc::Scavenger::threadRunLoop() () at /usr/include/c++/6.2.0/condition_variable:166
#3  0x00007f516bf6c468 in bmalloc::Scavenger::threadRunLoop() () at /usr/include/c++/6.2.0/condition_variable:106
#4  0x00007f516bf6c468 in bmalloc::Scavenger::threadRunLoop() () at /usr/include/c++/6.2.0/condition_variable:274
#5  0x00007f516bf6c468 in bmalloc::Scavenger::threadRunLoop() () at /usr/include/c++/6.2.0/condition_variable:285
#6  0x00007f516bf6c468 in bmalloc::Scavenger::threadRunLoop() () at /usr/include/c++/6.2.0/condition_variable:300
#7  0x00007f516bf6c468 in bmalloc::Scavenger::threadRunLoop() ()
    at /run/build-runtime/webkitgtk4/Source/bmalloc/bmalloc/Scavenger.cpp:149
#8  0x00007f516329ff6f in std::execute_native_thread_routine(void*) (__p=0xfde390)
    at ../../../../../../../../../../work-shared/gcc-6.2.0-r0/gcc-6.2.0/libstdc++-v3/src/c++11/thread.cc:83
        __t = 
                {_M_t = {<std::_Tuple_impl<0ul, std::thread::_State*, std::default_delete<std::thread::_State> >> = {<std::_Tuple_impl<1ul, std::default_delete<std::thread::_State> >> = {<std::_Head_base<1ul, std::default_delete<std::thread::_State>, true>> = {<std::default_delete<std::thread::_State>> = {<No data fields>}, <No data fields>}, <No data fields>}, <std::_Head_base<0ul, std::thread::_State*, false>> = {_M_head_impl = 0xfde390}, <No data fields>}, <No data fields>}}
#9  0x0000003754207404 in start_thread (arg=0x7f515c155700)
    at /usr/src/debug/glibc/2.24-r0/git/nptl/pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f515c155700
        now = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {139987413980928, -1270168254981307517, 140723383549934, 1407233835499
35, 0, 237624242240, 1224359632258761603, -1283001481460022397}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0x0000003753ae827f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f515c159900 (LWP 21)):
#0  0x00007f516f1236d7 in WebCore::CoordinatedGraphicsLayer::transformedVisibleRect() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:890
#1  0x00007f516f124d29 in WebCore::CoordinatedGraphicsLayer::updateContentBuffers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:968
#2  0x00007f516f124db3 in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:940
#3  0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#4  0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#5  0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#6  0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#7  0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#8  0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#9  0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#10 0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#11 0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#12 0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#13 0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#14 0x00007f516f124ddc in WebCore::CoordinatedGraphicsLayer::updateContentBuffersIncludingSubLayers() ()
    at /run/build-runtime/webkitgtk4/Source/WebCore/platform/graphics/texmap/coordinated/CoordinatedGraphicsLayer.cpp:943
#15 0x00007f516e6ad507 in WebKit::CompositingCoordinator::flushPendingLayerChanges() ()
    at /run/build-runtime/webkitgtk4/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CompositingCoordinator.cpp:123
#16 0x00007f516e6b20eb in WebKit::CoordinatedLayerTreeHost::layerFlushTimerFired() ()
    at /run/build-runtime/webkitgtk4/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CoordinatedLayerTreeHost.cpp:204
#17 0x00007f516e6b22d8 in WebKit::CoordinatedLayerTreeHost::renderNextFrame() ()
    at /run/build-runtime/webkitgtk4/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CoordinatedLayerTreeHost.cpp:178
#18 0x00007f516bf39550 in WTF::RunLoop::performWork() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/Function.h:56
#19 0x00007f516bf39550 in WTF::RunLoop::performWork() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/RunLoop.cpp:106
#20 0x00007f516bf61e09 in _FUN() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:68
#21 0x00007f516bf61e09 in _FUN() () at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:70
#22 0x00007f51674ad2da in g_main_context_dispatch (context=0x104c8f0) at gmain.c:3148
        dispatch = 0x7f516bf61e20 <_FUN()>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7f515b8f9000
        callback = 0x7f516bf61e00 <_FUN()>
        cb_funcs = <optimized out>
        cb_data = 0x11bc2e0
        need_destroy = <optimized out>
        source = 0x11bc250
        current = 0x107af50
        i = 0
#23 0x00007f51674ad2da in g_main_context_dispatch (context=context at entry=0x104c8f0) at gmain.c:3813
#24 0x00007f51674ad698 in g_main_context_iterate (context=0x104c8f0, block=block at entry=1, dispatch=dispatch at entry=
1, self=<optimized out>) at gmain.c:3886
        max_priority = 100
        timeout = 0
        some_ready = 1
        nfds = 4
        allocated_nfds = 4
        fds = <optimized out>
#25 0x00007f51674ad9c2 in g_main_loop_run (loop=0x11bc230) at gmain.c:4082
        __func__ = "g_main_loop_run"
#26 0x00007f516bf62810 in WTF::RunLoop::run() ()
    at /run/build-runtime/webkitgtk4/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#27 0x00007f516e6bb859 in WebKit::ChildProcessMain<WebKit::WebProcess, WebKit::WebProcessMain>(int, char**) ()
    at /run/build-runtime/webkitgtk4/Source/WebKit/Shared/unix/ChildProcessMain.h:61
#28 0x0000003753a20291 in __libc_start_main (main=
    0x400bd0 <main()>, argc=2, argv=0x7ffcb749c2b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcb749c2a8) at /usr/src/debug/glibc/2.24-r0/git/csu/libc-start.c:289
        result = <optimized out>
        unwind_buf = 
              {cancel_jmp_buf = {{jmp_buf = {0, -1270168804309302397, 4197424, 140723383550640, 0, 0, 1271732670176199555, -1283011358323997821}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffcb749c2d0, 0x3753824168}, data = {prev = 0x0, cleanup = 0x0, canceltype = -1219902768}}}
        not_first_call = <optimized out>
#29 0x0000000000400c5a in _start () at ../sysdeps/x86_64/start.S:120

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