Attachment 843172 Details for Bug 1047175 – File: backtrace

File: backtrace

backtrace (text/plain), 51.91 KB, created by Michael Catanzaro on 2013-12-29 20:52:11 UTC

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Creator: Michael Catanzaro

Created: 2013-12-29 20:52:11 UTC

Size: 51.91 KB

patch

obsolete

>warning: core file may not match specified executable file.
>[New LWP 26021]
>[New LWP 26023]
>[New LWP 26089]
>[New LWP 26028]
>[New LWP 26025]
>[New LWP 26024]
>[New LWP 26086]
>[New LWP 26087]
>[New LWP 26088]
>[New LWP 26743]
>[New LWP 26027]
>[New LWP 26748]
>[New LWP 26747]
>[New LWP 26026]
>warning: Could not load shared library symbols for 3 libraries, e.g. /lib64/libX11.so.6.
>Use the "info sharedlibrary" command to see the complete listing.
>Do you need "set solib-search-path" or "set sysroot"?
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>Core was generated by `/usr/libexec/WebKitWebProcess 9'.
>Program terminated with signal SIGSEGV, Segmentation fault.
>#0  get (this=<error reading variable: Cannot access memory at address 0x38>) at Source/WTF/wtf/OwnPtr.h:65
>65	        PtrType get() const { return m_ptr; }
>
>Thread 14 (Thread 0x7fb67bffd700 (LWP 26026)):
>#0  0x00007fb6d5ebca8d in poll () at ../sysdeps/unix/syscall-template.S:81
>No locals.
>#1  0x00007fb6d6e245b4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fb66c0010e0, timeout=-1, context=0x1b8f6c0) at gmain.c:4007
>        poll_func = 0x7fb6d6e33500 <g_poll>
>#2  g_main_context_iterate (context=0x1b8f6c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3708
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 1
>        allocated_nfds = 1
>        fds = 0x7fb66c0010e0
>#3  0x00007fb6d6e24a3a in g_main_loop_run (loop=0x1bc4370) at gmain.c:3907
>        __PRETTY_FUNCTION__ = "g_main_loop_run"
>#4  0x00007fb6dc835116 in WTF::wtfThreadEntryPoint (param=0x7fb6dcbcf1c0) at Source/WTF/wtf/ThreadingPthreads.cpp:195
>        invocation = {m_ptr = 0x7fb6dcbcf1c0}
>#5  0x00007fb6d6198f33 in start_thread (arg=0x7fb67bffd700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb67bffd700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140421741139712, 2516114239301396514, 0, 0, 140421741140416, 140421741139712, -2483735820224387038, -2484117125365061598}, 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>
>#6  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 13 (Thread 0x7fb60effc700 (LWP 26747)):
>#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
>No locals.
>#1  0x00007fb6d6e65915 in g_cond_wait_until (cond=cond@entry=0x2f04568, mutex=mutex@entry=0x2f04560, end_time=end_time@entry=14358262972) at gthread-posix.c:870
>        ts = {tv_sec = 14358, tv_nsec = 262972000}
>        status = <optimized out>
>#2  0x00007fb6d6dfa0d1 in g_async_queue_pop_intern_unlocked (queue=0x2f04560, wait=wait@entry=1, end_time=14358262972) at gasyncqueue.c:424
>        retval = <optimized out>
>        __FUNCTION__ = "g_async_queue_pop_intern_unlocked"
>#3  0x00007fb6d6dfa6c8 in g_async_queue_timeout_pop_unlocked (queue=<optimized out>, timeout=timeout@entry=500000) at gasyncqueue.c:572
>        end_time = <optimized out>
>#4  0x00007fb6d6e4a3d8 in g_thread_pool_wait_for_new_task (pool=0x2f04500) at gthreadpool.c:264
>        task = <optimized out>
>#5  g_thread_pool_thread_proxy (data=<optimized out>) at gthreadpool.c:298
>        task = 0x7fb63809a080
>        pool = 0x2f04500
>#6  0x00007fb6d6e49a45 in g_thread_proxy (data=0x3a72680) at gthread.c:798
>        thread = 0x3a72680
>#7  0x00007fb6d6198f33 in start_thread (arg=0x7fb60effc700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb60effc700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140419912419072, 2516114239301396514, 0, 0, 140419912419776, 140419912419072, -2483993104334673886, -2484117125365061598}, 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>
>#8  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 12 (Thread 0x7fb60e7fb700 (LWP 26748)):
>#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
>No locals.
>#1  0x00007fb6d6e65915 in g_cond_wait_until (cond=cond@entry=0x2f04568, mutex=mutex@entry=0x2f04560, end_time=end_time@entry=14358262267) at gthread-posix.c:870
>        ts = {tv_sec = 14358, tv_nsec = 262267000}
>        status = <optimized out>
>#2  0x00007fb6d6dfa0d1 in g_async_queue_pop_intern_unlocked (queue=0x2f04560, wait=wait@entry=1, end_time=14358262267) at gasyncqueue.c:424
>        retval = <optimized out>
>        __FUNCTION__ = "g_async_queue_pop_intern_unlocked"
>#3  0x00007fb6d6dfa6c8 in g_async_queue_timeout_pop_unlocked (queue=<optimized out>, timeout=timeout@entry=500000) at gasyncqueue.c:572
>        end_time = <optimized out>
>#4  0x00007fb6d6e4a3d8 in g_thread_pool_wait_for_new_task (pool=0x2f04500) at gthreadpool.c:264
>        task = <optimized out>
>#5  g_thread_pool_thread_proxy (data=<optimized out>) at gthreadpool.c:298
>        task = 0x7fb648153b10
>        pool = 0x2f04500
>#6  0x00007fb6d6e49a45 in g_thread_proxy (data=0x2f968f0) at gthread.c:798
>        thread = 0x2f968f0
>#7  0x00007fb6d6198f33 in start_thread (arg=0x7fb60e7fb700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb60e7fb700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140419904026368, 2516114239301396514, 0, 0, 140419904027072, 140419904026368, -2483994204383172574, -2484117125365061598}, 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>
>#8  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 11 (Thread 0x7fb67b7fc700 (LWP 26027)):
>#0  0x00007fb6d5ebca8d in poll () at ../sysdeps/unix/syscall-template.S:81
>No locals.
>#1  0x00007fb6d6e245b4 in g_main_context_poll (priority=2147483647, n_fds=3, fds=0x7fb6700010e0, timeout=-1, context=0x1cfb6f0) at gmain.c:4007
>        poll_func = 0x7fb6d6e33500 <g_poll>
>#2  g_main_context_iterate (context=0x1cfb6f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3708
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 3
>        allocated_nfds = 3
>        fds = 0x7fb6700010e0
>#3  0x00007fb6d6e24a3a in g_main_loop_run (loop=0x1cfb7e0) at gmain.c:3907
>        __PRETTY_FUNCTION__ = "g_main_loop_run"
>#4  0x00007fb6dc835116 in WTF::wtfThreadEntryPoint (param=0x7fb6dcbcf1a0) at Source/WTF/wtf/ThreadingPthreads.cpp:195
>        invocation = {m_ptr = 0x7fb6dcbcf1a0}
>#5  0x00007fb6d6198f33 in start_thread (arg=0x7fb67b7fc700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb67b7fc700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140421732747008, 2516114239301396514, 0, 0, 140421732747712, 140421732747008, -2483736918125402078, -2484117125365061598}, 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>
>#6  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 10 (Thread 0x7fb6193f9700 (LWP 26743)):
>#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
>No locals.
>#1  0x00007fb6d6e65915 in g_cond_wait_until (cond=cond@entry=0x2f04568, mutex=mutex@entry=0x2f04560, end_time=end_time@entry=14358263553) at gthread-posix.c:870
>        ts = {tv_sec = 14358, tv_nsec = 263553000}
>        status = <optimized out>
>#2  0x00007fb6d6dfa0d1 in g_async_queue_pop_intern_unlocked (queue=0x2f04560, wait=wait@entry=1, end_time=14358263553) at gasyncqueue.c:424
>        retval = <optimized out>
>        __FUNCTION__ = "g_async_queue_pop_intern_unlocked"
>#3  0x00007fb6d6dfa6c8 in g_async_queue_timeout_pop_unlocked (queue=<optimized out>, timeout=timeout@entry=500000) at gasyncqueue.c:572
>        end_time = <optimized out>
>#4  0x00007fb6d6e4a3d8 in g_thread_pool_wait_for_new_task (pool=0x2f04500) at gthreadpool.c:264
>        task = <optimized out>
>#5  g_thread_pool_thread_proxy (data=<optimized out>) at gthreadpool.c:298
>        task = 0x3c613a0
>        pool = 0x2f04500
>#6  0x00007fb6d6e49a45 in g_thread_proxy (data=0x2fd21e0) at gthread.c:798
>        thread = 0x2fd21e0
>#7  0x00007fb6d6198f33 in start_thread (arg=0x7fb6193f9700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb6193f9700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140420084373248, 2516114239301396514, 0, 0, 140420084373952, 140420084373248, -2483951872111761374, -2484117125365061598}, 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>
>#8  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 9 (Thread 0x7fb662ffd700 (LWP 26088)):
>#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007fb6dc5e791b in JSC::GCThread::waitForNextPhase (this=this@entry=0x2d7db50) at Source/JavaScriptCore/heap/GCThread.cpp:81
>        locker = {m_lockable = 0x7fb6dcc63d08}
>#2  0x00007fb6dc5e79b0 in JSC::GCThread::gcThreadMain (this=0x2d7db50) at Source/JavaScriptCore/heap/GCThread.cpp:99
>        enabler = {m_stack = @0x2d7d910}
>        currentPhase = <optimized out>
>#3  0x00007fb6dc835116 in WTF::wtfThreadEntryPoint (param=0x7fb6dcbcf4c0) at Source/WTF/wtf/ThreadingPthreads.cpp:195
>        invocation = {m_ptr = 0x7fb6dcbcf4c0}
>#4  0x00007fb6d6198f33 in start_thread (arg=0x7fb662ffd700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb662ffd700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140421321709312, 2516114239301396514, 0, 0, 140421321710016, 140421321709312, -2483790795805775838, -2484117125365061598}, 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>
>#5  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 8 (Thread 0x7fb6637fe700 (LWP 26087)):
>#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007fb6dc5e791b in JSC::GCThread::waitForNextPhase (this=this@entry=0x2d80110) at Source/JavaScriptCore/heap/GCThread.cpp:81
>        locker = {m_lockable = 0x7fb6dcc63d08}
>#2  0x00007fb6dc5e79b0 in JSC::GCThread::gcThreadMain (this=0x2d80110) at Source/JavaScriptCore/heap/GCThread.cpp:99
>        enabler = {m_stack = @0x1b04d80}
>        currentPhase = <optimized out>
>#3  0x00007fb6dc835116 in WTF::wtfThreadEntryPoint (param=0x7fb6dcbcf4e0) at Source/WTF/wtf/ThreadingPthreads.cpp:195
>        invocation = {m_ptr = 0x7fb6dcbcf4e0}
>#4  0x00007fb6d6198f33 in start_thread (arg=0x7fb6637fe700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb6637fe700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140421330102016, 2516114239301396514, 0, 0, 140421330102720, 140421330102016, -2483789695757277150, -2484117125365061598}, 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>
>#5  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 7 (Thread 0x7fb663fff700 (LWP 26086)):
>#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007fb6dc5e668d in JSC::BlockAllocator::blockFreeingThreadMain (this=0x7fb6dcc5b058) at Source/JavaScriptCore/heap/BlockAllocator.cpp:139
>        locker = {m_lockable = 0x7fb6dcc5b208}
>        regionLocker = {lock_ = 0x7fb6dcc5b204}
>        desiredNumberOfEmptyRegions = <optimized out>
>#2  0x00007fb6dc835116 in WTF::wtfThreadEntryPoint (param=0x7fb6dcbcf140) at Source/WTF/wtf/ThreadingPthreads.cpp:195
>        invocation = {m_ptr = 0x7fb6dcbcf140}
>#3  0x00007fb6d6198f33 in start_thread (arg=0x7fb663fff700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb663fff700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140421338494720, 2516114239301396514, 0, 0, 140421338495424, 140421338494720, -2483788597856262110, -2484117125365061598}, 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>
>#4  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 6 (Thread 0x7fb6c1395700 (LWP 26024)):
>#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007fb6dc81c4f6 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7fb6dcb33b60 <WTF::pageheap_memory>) at Source/WTF/wtf/FastMalloc.cpp:2884
>No locals.
>#2  0x00007fb6dc81c529 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at Source/WTF/wtf/FastMalloc.cpp:2052
>No locals.
>#3  0x00007fb6d6198f33 in start_thread (arg=0x7fb6c1395700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb6c1395700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140422902535936, 2516114239301396514, 0, 0, 140422902536640, 140422902535936, -2484145435550373854, -2484117125365061598}, 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>
>#4  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 5 (Thread 0x7fb6c0b94700 (LWP 26025)):
>#0  0x00007fb6d5ebca8d in poll () at ../sysdeps/unix/syscall-template.S:81
>No locals.
>#1  0x00007fb6d6e245b4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fb6740010e0, timeout=-1, context=0x1bc42b0) at gmain.c:4007
>        poll_func = 0x7fb6d6e33500 <g_poll>
>#2  g_main_context_iterate (context=0x1bc42b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3708
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 1
>        allocated_nfds = 1
>        fds = 0x7fb6740010e0
>#3  0x00007fb6d6e24a3a in g_main_loop_run (loop=0x1beb520) at gmain.c:3907
>        __PRETTY_FUNCTION__ = "g_main_loop_run"
>#4  0x00007fb6dc835116 in WTF::wtfThreadEntryPoint (param=0x7fb6dcbcf1e0) at Source/WTF/wtf/ThreadingPthreads.cpp:195
>        invocation = {m_ptr = 0x7fb6dcbcf1e0}
>#5  0x00007fb6d6198f33 in start_thread (arg=0x7fb6c0b94700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb6c0b94700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140422894143232, 2516114239301396514, 0, 0, 140422894143936, 140422894143232, -2484146533451388894, -2484117125365061598}, 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>
>#6  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 4 (Thread 0x7fb67adef700 (LWP 26028)):
>#0  0x00007fb6d5ebca8d in poll () at ../sysdeps/unix/syscall-template.S:81
>No locals.
>#1  0x00007fb6d6e245b4 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fb6640010c0, timeout=-1, context=0x1b67810) at gmain.c:4007
>        poll_func = 0x7fb6d6e33500 <g_poll>
>#2  g_main_context_iterate (context=context@entry=0x1b67810, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3708
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 1
>        allocated_nfds = 1
>        fds = 0x7fb6640010c0
>#3  0x00007fb6d6e246dc in g_main_context_iteration (context=context@entry=0x1b67810, may_block=may_block@entry=1) at gmain.c:3774
>        retval = <optimized out>
>#4  0x00007fb67adf6b7d in dconf_gdbus_worker_thread (user_data=0x1b67810) at dconf-gdbus-thread.c:81
>        context = 0x1b67810
>#5  0x00007fb6d6e49a45 in g_thread_proxy (data=0x1c2cc50) at gthread.c:798
>        thread = 0x1c2cc50
>#6  0x00007fb6d6198f33 in start_thread (arg=0x7fb67adef700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb67adef700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140421722208000, 2516114239301396514, 0, 0, 140421722208704, 140421722208000, -2483738303789225950, -2484117125365061598}, 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>
>#7  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 3 (Thread 0x7fb6627fc700 (LWP 26089)):
>#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007fb6dc5e791b in JSC::GCThread::waitForNextPhase (this=this@entry=0x2d7c680) at Source/JavaScriptCore/heap/GCThread.cpp:81
>        locker = {m_lockable = 0x7fb6dcc63d08}
>#2  0x00007fb6dc5e79b0 in JSC::GCThread::gcThreadMain (this=0x2d7c680) at Source/JavaScriptCore/heap/GCThread.cpp:99
>        enabler = {m_stack = @0x2d7d190}
>        currentPhase = <optimized out>
>#3  0x00007fb6dc835116 in WTF::wtfThreadEntryPoint (param=0x7fb6dcbcf4a0) at Source/WTF/wtf/ThreadingPthreads.cpp:195
>        invocation = {m_ptr = 0x7fb6dcbcf4a0}
>#4  0x00007fb6d6198f33 in start_thread (arg=0x7fb6627fc700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb6627fc700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140421313316608, 2516114239301396514, 0, 0, 140421313317312, 140421313316608, -2483791893706790878, -2484117125365061598}, 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>
>#5  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 2 (Thread 0x7fb6c393b700 (LWP 26023)):
>#0  0x00007fb6d5ebca8d in poll () at ../sysdeps/unix/syscall-template.S:81
>No locals.
>#1  0x00007fb6d6e245b4 in g_main_context_poll (priority=2147483647, n_fds=3, fds=0x7fb6bc0010e0, timeout=-1, context=0x1b09530) at gmain.c:4007
>        poll_func = 0x7fb6d6e33500 <g_poll>
>#2  g_main_context_iterate (context=0x1b09530, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3708
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 3
>        allocated_nfds = 3
>        fds = 0x7fb6bc0010e0
>#3  0x00007fb6d6e24a3a in g_main_loop_run (loop=0x1b094c0) at gmain.c:3907
>        __PRETTY_FUNCTION__ = "g_main_loop_run"
>#4  0x00007fb6d7428376 in gdbus_shared_thread_func (user_data=0x1b09500) at gdbusprivate.c:278
>        data = 0x1b09500
>#5  0x00007fb6d6e49a45 in g_thread_proxy (data=0x1af74a0) at gthread.c:798
>        thread = 0x1af74a0
>#6  0x00007fb6d6198f33 in start_thread (arg=0x7fb6c393b700) at pthread_create.c:309
>        __res = <optimized out>
>        pd = 0x7fb6c393b700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140422942013184, 2516114239301396514, 0, 0, 140422942013888, 140422942013184, -2484140130192021470, -2484117125365061598}, 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>
>#7  0x00007fb6d5ec6ead in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>No locals.
>
>Thread 1 (Thread 0x7fb6dcd2ea40 (LWP 26021)):
>#0  get (this=<error reading variable: Cannot access memory at address 0x38>) at Source/WTF/wtf/OwnPtr.h:65
>No locals.
>#1  backing (this=<error reading variable: Cannot access memory at address 0x38>) at Source/WebCore/rendering/RenderLayer.h:765
>No locals.
>#2  WebCore::RenderLayerCompositor::pageTiledBacking (this=this@entry=0x7fb64f959700) at Source/WebCore/rendering/RenderLayerCompositor.cpp:1638
>        renderViewBacking = <optimized out>
>#3  0x00007fb6dac5e8b0 in WebCore::RenderLayerCompositor::setIsInWindow (this=0x7fb64f959700, isInWindow=<optimized out>) at Source/WebCore/rendering/RenderLayerCompositor.cpp:1644
>        tiledBacking = <optimized out>
>#4  0x00007fb6da694257 in WebCore::Document::detach (this=0x7fb64c147400) at Source/WebCore/dom/Document.cpp:2058
>No locals.
>#5  0x00007fb6da80365d in WebCore::CachedFrame::destroy (this=0x7fb64c1507e0) at Source/WebCore/history/CachedFrame.cpp:282
>No locals.
>#6  0x00007fb6da8042e7 in WebCore::CachedPage::destroy (this=this@entry=0x7fb64fb315a0) at Source/WebCore/history/CachedPage.cpp:125
>No locals.
>#7  0x00007fb6da804349 in WebCore::CachedPage::~CachedPage (this=0x7fb64fb315a0, __in_chrg=<optimized out>) at Source/WebCore/history/CachedPage.cpp:73
>No locals.
>#8  0x00007fb6da808b48 in deref (this=0x7fb64fb315a0) at Source/WTF/wtf/RefCounted.h:196
>        this = 0x7fb64fb315a0
>#9  derefIfNotNull<WebCore::CachedPage> (ptr=0x7fb64fb315a0) at Source/WTF/wtf/PassRefPtr.h:52
>No locals.
>#10 clear (this=0x7fb6609cbfe0) at Source/WTF/wtf/RefPtr.h:107
>        ptr = 0x7fb64fb315a0
>#11 WebCore::PageCache::remove (this=0x7fb6dcbc93c0, item=0x7fb6609cbf00) at Source/WebCore/history/PageCache.cpp:467
>        item = 0x7fb6609cbf00
>        this = 0x7fb6dcbc93c0
>#12 0x00007fb6da808bdc in WebCore::PageCache::prune (this=this@entry=0x7fb6dcbc93c0) at Source/WebCore/history/PageCache.cpp:478
>No locals.
>#13 0x00007fb6da808c9f in WebCore::PageCache::add (this=0x7fb6dcbc93c0, prpItem=..., page=<optimized out>) at Source/WebCore/history/PageCache.cpp:443
>        item = 0x7fb623d33870
>#14 0x00007fb6daa5f30e in WebCore::FrameLoader::commitProvisionalLoad (this=0x7fb6dcbd7978) at Source/WebCore/loader/FrameLoader.cpp:1715
>No locals.
>#15 0x00007fb6daa5f527 in WebCore::FrameLoader::loadProvisionalItemFromCachedPage (this=0x7fb6dcbd7978) at Source/WebCore/loader/FrameLoader.cpp:3034
>No locals.
>#16 0x00007fb6daa5f6ce in WebCore::FrameLoader::continueLoadAfterNavigationPolicy (this=0x7fb6dcbd7978, formState=..., shouldContinue=<optimized out>) at Source/WebCore/loader/FrameLoader.cpp:2876
>No locals.
>#17 0x00007fb6daa5f7ae in WebCore::FrameLoader::callContinueLoadAfterNavigationPolicy (argument=<optimized out>, request=..., formState=..., shouldContinue=<optimized out>) at Source/WebCore/loader/FrameLoader.cpp:2713
>No locals.
>#18 0x00007fb6daa817d5 in WebCore::PolicyCallback::call (this=this@entry=0x7fff2ef9c400, shouldContinue=shouldContinue@entry=true) at Source/WebCore/loader/PolicyCallback.cpp:103
>No locals.
>#19 0x00007fb6daa87493 in WebCore::PolicyChecker::continueAfterNavigationPolicy (this=<optimized out>, policy=<optimized out>) at Source/WebCore/loader/PolicyChecker.cpp:180
>        callback = {m_request = {<WebCore::ResourceRequestBase> = {m_url = {m_string = {m_impl = {m_ptr = 0x7fb64fb35240}}, m_isValid = true, m_protocolIsInHTTPFamily = true, m_schemeEnd = 5, m_userStart = 8, m_userEnd = 8, m_passwordEnd = 8, m_hostEnd = 27, m_portEnd = 27, m_pathAfterLastSlash = 51, m_pathEnd = 60, m_queryEnd = 60, m_fragmentEnd = 60}, m_cachePolicy = WebCore::UseProtocolCachePolicy, m_timeoutInterval = 0, m_firstPartyForCookies = {m_string = {m_impl = {m_ptr = 0x7fb64fb35240}}, m_isValid = true, m_protocolIsInHTTPFamily = true, m_schemeEnd = 5, m_userStart = 8, m_userEnd = 8, m_passwordEnd = 8, m_hostEnd = 27, m_portEnd = 27, m_pathAfterLastSlash = 51, m_pathEnd = 60, m_queryEnd = 60, m_fragmentEnd = 60}, m_httpMethod = {m_impl = {m_ptr = 0x7fb6600da4a0}}, m_httpHeaderFields = {<WTF::HashMap<WTF::AtomicString, WTF::String, WTF::CaseFoldingHash, WTF::HashTraits<WTF::AtomicString>, WTF::HashTraits<WTF::String> >> = {m_impl = {static m_maxLoad = <optimized out>, static m_minLoad = <optimized out>, m_table = 0x7fb64efb0700, m_tableSize = 16, m_tableSizeMask = 15, m_keyCount = 4, m_deletedCount = 0}}, <No data fields>}, m_responseContentDispositionEncodingFallbackArray = {<WTF::VectorBuffer<WTF::String, 0ul>> = {<WTF::VectorBufferBase<WTF::String>> = {m_buffer = 0x7fb6787ed5a0, m_capacity = 3, m_size = 3}, <No data fields>}, <No data fields>}, m_httpBody = {m_ptr = 0x0}, m_allowCookies = true, m_resourceRequestUpdated = true, m_platformRequestUpdated = false, m_resourceRequestBodyUpdated = true, m_platformRequestBodyUpdated = false, m_reportUploadProgress = false, m_reportLoadTiming = true, m_reportRawHeaders = false, m_priority = WebCore::ResourceLoadPriorityVeryHigh, static s_defaultTimeoutInterval = 0}, m_acceptEncoding = true, m_soupFlags = (unknown: 0)}, m_formState = {m_ptr = 0x0}, m_frameName = {m_impl = {m_ptr = 0x0}}, m_navigationAction = {m_resourceRequest = {<WebCore::ResourceRequestBase> = {m_url = {m_string = {m_impl = {m_ptr = 0x0}}, m_isValid = false, m_protocolIsInHTTPFamily = false, m_schemeEnd = 0, m_userStart = 0, m_userEnd = 0, m_passwordEnd = 0, m_hostEnd = 0, m_portEnd = 0, m_pathAfterLastSlash = 0, m_pathEnd = 0, m_queryEnd = 0, m_fragmentEnd = 0}, m_cachePolicy = WebCore::UseProtocolCachePolicy, m_timeoutInterval = 0, m_firstPartyForCookies = {m_string = {m_impl = {m_ptr = 0x0}}, m_isValid = false, m_protocolIsInHTTPFamily = false, m_schemeEnd = 0, m_userStart = 0, m_userEnd = 0, m_passwordEnd = 0, m_hostEnd = 0, m_portEnd = 0, m_pathAfterLastSlash = 0, m_pathEnd = 0, m_queryEnd = 0, m_fragmentEnd = 0}, m_httpMethod = {m_impl = {m_ptr = 0x7fb6dcbc92a0}}, m_httpHeaderFields = {<WTF::HashMap<WTF::AtomicString, WTF::String, WTF::CaseFoldingHash, WTF::HashTraits<WTF::AtomicString>, WTF::HashTraits<WTF::String> >> = {m_impl = {static m_maxLoad = <optimized out>, static m_minLoad = <optimized out>, m_table = 0x0, m_tableSize = 0, m_tableSizeMask = 0, m_keyCount = 0, m_deletedCount = 0}}, <No data fields>}, m_responseContentDispositionEncodingFallbackArray = {<WTF::VectorBuffer<WTF::String, 0ul>> = {<WTF::VectorBufferBase<WTF::String>> = {m_buffer = 0x0, m_capacity = 0, m_size = 0}, <No data fields>}, <No data fields>}, m_httpBody = {m_ptr = 0x0}, m_allowCookies = true, m_resourceRequestUpdated = true, m_platformRequestUpdated = false, m_resourceRequestBodyUpdated = true, m_platformRequestBodyUpdated = false, m_reportUploadProgress = false, m_reportLoadTiming = false, m_reportRawHeaders = false, m_priority = WebCore::ResourceLoadPriorityLow, static s_defaultTimeoutInterval = 0}, m_acceptEncoding = true, m_soupFlags = (unknown: 0)}, m_type = WebCore::NavigationTypeOther, m_event = {m_ptr = 0x0}}, m_navigationFunction = 0x7fb6daa5f780 <WebCore::FrameLoader::callContinueLoadAfterNavigationPolicy(void*, WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>, bool)>, m_newWindowFunction = 0x0, m_contentFunction = 0x0, m_argument = 0x7fb6dcbd7978}
>        shouldContinue = <optimized out>
>#20 0x00007fb6da3feb7d in WebKit::WebFrameLoaderClient::dispatchDecidePolicyForNavigationAction (this=0x2d6ad00, function=<optimized out>, navigationAction=..., request=..., formState=...) at Source/WebKit2/WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:712
>        webPage = 0x7fb6dcc00700
>        action = {m_ptr = 0x7fb622a36b90}
>        policy = <optimized out>
>        policyAction = 0
>        userData = {m_ptr = 0x0}
>        listenerID = 187
>        receivedPolicyAction = true
>        downloadID = 0
>#21 0x00007fb6daa8659f in WebCore::PolicyChecker::checkNavigationPolicy (this=0x2d6bff0, request=..., loader=<optimized out>, formState=..., function=0x7fb6daa5f780 <WebCore::FrameLoader::callContinueLoadAfterNavigationPolicy(void*, WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>, bool)>, argument=0x7fb6dcbd7978) at Source/WebCore/loader/PolicyChecker.cpp:99
>        action = {m_resourceRequest = {<WebCore::ResourceRequestBase> = {m_url = {m_string = {m_impl = {m_ptr = 0x7fb64fb35240}}, m_isValid = true, m_protocolIsInHTTPFamily = true, m_schemeEnd = 5, m_userStart = 8, m_userEnd = 8, m_passwordEnd = 8, m_hostEnd = 27, m_portEnd = 27, m_pathAfterLastSlash = 51, m_pathEnd = 60, m_queryEnd = 60, m_fragmentEnd = 60}, m_cachePolicy = WebCore::UseProtocolCachePolicy, m_timeoutInterval = 0, m_firstPartyForCookies = {m_string = {m_impl = {m_ptr = 0x7fb64fb35240}}, m_isValid = true, m_protocolIsInHTTPFamily = true, m_schemeEnd = 5, m_userStart = 8, m_userEnd = 8, m_passwordEnd = 8, m_hostEnd = 27, m_portEnd = 27, m_pathAfterLastSlash = 51, m_pathEnd = 60, m_queryEnd = 60, m_fragmentEnd = 60}, m_httpMethod = {m_impl = {m_ptr = 0x7fb6600da4a0}}, m_httpHeaderFields = {<WTF::HashMap<WTF::AtomicString, WTF::String, WTF::CaseFoldingHash, WTF::HashTraits<WTF::AtomicString>, WTF::HashTraits<WTF::String> >> = {m_impl = {static m_maxLoad = <optimized out>, static m_minLoad = <optimized out>, m_table = 0x7fb64dfa4200, m_tableSize = 8, m_tableSizeMask = 7, m_keyCount = 3, m_deletedCount = 0}}, <No data fields>}, m_responseContentDispositionEncodingFallbackArray = {<WTF::VectorBuffer<WTF::String, 0ul>> = {<WTF::VectorBufferBase<WTF::String>> = {m_buffer = 0x7fb6787ed138, m_capacity = 3, m_size = 3}, <No data fields>}, <No data fields>}, m_httpBody = {m_ptr = 0x0}, m_allowCookies = true, m_resourceRequestUpdated = true, m_platformRequestUpdated = false, m_resourceRequestBodyUpdated = true, m_platformRequestBodyUpdated = false, m_reportUploadProgress = false, m_reportLoadTiming = false, m_reportRawHeaders = false, m_priority = WebCore::ResourceLoadPriorityLow, static s_defaultTimeoutInterval = 0}, m_acceptEncoding = true, m_soupFlags = (unknown: 0)}, m_type = WebCore::NavigationTypeLinkClicked, m_event = {m_ptr = 0x7fb661b01420}}
>#22 0x00007fb6daa60a9c in WebCore::FrameLoader::loadWithDocumentLoader (this=0x7fb6dcbd7978, loader=0x7fb627e5f400, type=<optimized out>, prpFormState=...) at Source/WebCore/loader/FrameLoader.cpp:1421
>No locals.
>#23 0x00007fb6daa645f5 in WebCore::FrameLoader::loadDifferentDocumentItem (this=0x7fb6dcbd7978, item=0x7fb623d33960, loadType=WebCore::FrameLoadTypeBack, cacheLoadPolicy=WebCore::FrameLoader::MayAttemptCacheOnlyLoadForFormSubmissionItem) at Source/WebCore/loader/FrameLoader.cpp:3129
>No locals.
>#24 0x00007fb6daa69063 in WebCore::HistoryController::recursiveGoToItem (this=this@entry=0x2d6c1e0, item=item@entry=0x7fb623d33960, fromItem=fromItem@entry=0x7fb623d33870, type=type@entry=WebCore::FrameLoadTypeBack) at Source/WebCore/loader/HistoryController.cpp:745
>No locals.
>#25 0x00007fb6daa69989 in WebCore::HistoryController::goToItem (this=0x2d6c1e0, targetItem=targetItem@entry=0x7fb623d33960, type=type@entry=WebCore::FrameLoadTypeBack) at Source/WebCore/loader/HistoryController.cpp:290
>        currentItem = {m_ptr = 0x7fb623d33870}
>#26 0x00007fb6dab228ae in WebCore::Page::goToItem (this=0x2d6b030, item=0x7fb623d33960, type=type@entry=WebCore::FrameLoadTypeBack) at Source/WebCore/page/Page.cpp:427
>        protector = {m_ptr = 0x7fb623d33960}
>#27 0x00007fb6da421677 in WebKit::WebPage::goBack (this=this@entry=0x7fb6dcc00700, backForwardItemID=<optimized out>) at Source/WebKit2/WebProcess/WebPage/WebPage.cpp:1037
>        stopper = {m_page = 0x7fb6dcc00700}
>        item = <optimized out>
>#28 0x00007fb6da455876 in callMemberFunction<WebKit::WebPage, void (WebKit::WebPage::*)(unsigned long), unsigned long> (function=<optimized out>, object=0x7fb6dcc00700, args=...) at Source/WebKit2/Platform/CoreIPC/HandleMessage.h:21
>No locals.
>#29 handleMessage<Messages::WebPage::GoBack, WebKit::WebPage, void (WebKit::WebPage::*)(unsigned long)> (function=<optimized out>, object=0x7fb6dcc00700, decoder=...) at Source/WebKit2/Platform/CoreIPC/HandleMessage.h:376
>        arguments = {argument1 = 513}
>#30 WebKit::WebPage::didReceiveWebPageMessage (this=0x7fb6dcc00700, decoder=...) at DerivedSources/WebKit2/WebPageMessageReceiver.cpp:172
>No locals.
>#31 0x00007fb6db6dc32f in CoreIPC::MessageReceiverMap::dispatchMessage (this=this@entry=0x1c33460, connection=connection@entry=0x7fb6dcbd9d80, decoder=...) at Source/WebKit2/Platform/CoreIPC/MessageReceiverMap.cpp:86
>        messageReceiver = <optimized out>
>#32 0x00007fb6da42e3b6 in WebKit::WebProcess::didReceiveMessage (this=0x1c33400, connection=0x7fb6dcbd9d80, decoder=...) at Source/WebKit2/WebProcess/WebProcess.cpp:641
>No locals.
>#33 0x00007fb6db6d5f00 in CoreIPC::Connection::dispatchMessage (this=this@entry=0x7fb6dcbd9d80, incomingMessage=...) at Source/WebKit2/Platform/CoreIPC/Connection.cpp:816
>        message = {m_ptr = 0x7fb670001100}
>        oldDidReceiveInvalidMessage = false
>#34 0x00007fb6db6d608c in CoreIPC::Connection::dispatchOneMessage (this=0x7fb6dcbd9d80) at Source/WebKit2/Platform/CoreIPC/Connection.cpp:842
>        message = {m_ptr = 0x0}
>#35 0x00007fb6db5946cd in operator() (this=<synthetic pointer>) at Source/WTF/wtf/Functional.h:704
>No locals.
>#36 WebCore::RunLoop::performWork (this=0x7fb6dcbd1d90) at Source/WebCore/platform/RunLoop.cpp:104
>        function = {<WTF::FunctionBase> = {m_impl = {m_ptr = 0x7fb661be0550}}, <No data fields>}
>        functionsToHandle = 1
>#37 0x00007fb6db5af859 in WebCore::RunLoop::queueWork (runLoop=<optimized out>) at Source/WebCore/platform/gtk/RunLoopGtk.cpp:104
>No locals.
>#38 0x00007fb6d6e242a6 in g_main_dispatch (context=0x1b04f50) at gmain.c:3066
>        dispatch = 0x7fb6d6e21150 <g_idle_dispatch>
>        was_in_call = 0
>        user_data = 0x7fb6dcbd1d90
>        callback = 0x7fb6db5af850 <WebCore::RunLoop::queueWork(WebCore::RunLoop*)>
>        cb_funcs = 0x7fb6d71058e0 <g_source_callback_funcs>
>        cb_data = 0x7fb670001e70
>        need_destroy = <optimized out>
>        current_source_link = {data = 0x7fb670001e00, next = 0x0}
>        source = 0x7fb670001e00
>        current = 0x1b32330
>        i = 0
>#39 g_main_context_dispatch (context=context@entry=0x1b04f50) at gmain.c:3642
>No locals.
>#40 0x00007fb6d6e24628 in g_main_context_iterate (context=0x1b04f50, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3713
>        max_priority = 2147483647
>        timeout = 27344
>        some_ready = 1
>        nfds = <optimized out>
>        allocated_nfds = 18
>        fds = 0x3c80910
>#41 0x00007fb6d6e24a3a in g_main_loop_run (loop=0x1beb500) at gmain.c:3907
>        __PRETTY_FUNCTION__ = "g_main_loop_run"
>#42 0x00007fb6da3a2625 in WebKit::WebProcessMainGtk (argc=2, argv=0x7fff2ef9d618) at Source/WebKit2/WebProcess/gtk/WebProcessMainGtk.cpp:78
>        parameters = {uiProcessName = {m_impl = {m_ptr = 0x0}}, clientIdentifier = {m_impl = {m_ptr = 0x0}}, connectionIdentifier = 9, extraInitializationData = {m_impl = {static m_maxLoad = <optimized out>, static m_minLoad = <optimized out>, m_table = 0x0, m_tableSize = 0, m_tableSizeMask = 0, m_keyCount = 0, m_deletedCount = 0}}}
>        session = 0x1c77100
>#43 0x00007fb6d5df3d65 in __libc_start_main (main=0x400880 <main(int, char**)>, argc=2, argv=0x7fff2ef9d618, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff2ef9d608) at libc-start.c:285
>        result = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2516114239301396514, 4196488, 140733981513232, 0, 0, -2516010935318173662, -2484118719271884766}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x400980 <__libc_csu_init>, 0x7fff2ef9d618}, data = {prev = 0x0, cleanup = 0x0, canceltype = 4196736}}}
>        not_first_call = <optimized out>
>#44 0x00000000004008b1 in _start ()
>No symbol table info available.
>From                To                  Syms Read   Shared Object Library
>0x00007fb6dc4296d0  0x00007fb6dc854a8c  Yes         /lib64/libjavascriptcoregtk-3.0.so.0
>0x00007fb6da27dd80  0x00007fb6db6e0f7c  Yes         /lib64/libwebkit2gtk-3.0.so.25
>0x00007fb6d9c24ca0  0x00007fb6d9c41fcc  Yes         /lib64/libfontconfig.so.1
>0x00007fb6d9987320  0x00007fb6d99f30c4  Yes         /lib64/libfreetype.so.6
>0x00007fb6d9777bf0  0x00007fb6d9778188  Yes         /lib64/libharfbuzz-icu.so.0
>0x00007fb6d9529d00  0x00007fb6d955cb6c  Yes         /lib64/libharfbuzz.so.0
>0x00007fb6d9320190  0x00007fb6d9321088  Yes         /lib64/libgmodule-2.0.so.0
>0x00007fb6d911d6b0  0x00007fb6d911d81c  Yes         /lib64/libgthread-2.0.so.0
>0x00007fb6d8a7d100  0x00007fb6d8d41b54  Yes         /lib64/libgtk-3.so.0
>0x00007fb6d876da40  0x00007fb6d87c0694  Yes         /lib64/libgdk-3.so.0
>0x00007fb6d8545880  0x00007fb6d854a368  Yes         /lib64/libpangocairo-1.0.so.0
>0x00007fb6d8303050  0x00007fb6d8321fa8  Yes         /lib64/libpango-1.0.so.0
>0x00007fb6d80dd3b0  0x00007fb6d80e8f34  Yes         /lib64/libatk-1.0.so.0
>0x00007fb6d7ecd560  0x00007fb6d7ece59c  Yes (*)     /lib64/libcairo-gobject.so.2
>0x00007fb6d7bb86d0  0x00007fb6d7c87ef8  Yes         /lib64/libcairo.so.2
>0x00007fb6d7987cb0  0x00007fb6d799b810  Yes         /lib64/libgdk_pixbuf-2.0.so.0
>0x00007fb6d76f97a0  0x00007fb6d7736a70  Yes         /lib64/libsoup-2.4.so.1
>0x00007fb6d7389be0  0x00007fb6d744b65c  Yes         /lib64/libgio-2.0.so.0
>0x00007fb6d7112160  0x00007fb6d7140a18  Yes         /lib64/libgobject-2.0.so.0
>0x00007fb6d6df56e0  0x00007fb6d6e8df1c  Yes         /lib64/libglib-2.0.so.0
>0x00007fb6d6bd52d0  0x00007fb6d6bd80cc  Yes         /lib64/librt.so.1
>0x00007fb6d6926ab0  0x00007fb6d698d62a  Yes         /lib64/libstdc++.so.6
>0x00007fb6d65c9890  0x00007fb6d6638bb8  Yes         /lib64/libm.so.6
>0x00007fb6d63b0af0  0x00007fb6d63c0218  Yes         /lib64/libgcc_s.so.1
>0x00007fb6d61969f0  0x00007fb6d61a2614  Yes         /lib64/libpthread.so.0
>0x00007fb6d5df1560  0x00007fb6d5f32cc4  Yes         /lib64/libc.so.6
>0x00007fb6d5bbe210  0x00007fb6d5bca930  Yes         /lib64/libz.so.1
>0x00007fb6d5856220  0x00007fb6d595bcf4  Yes         /lib64/libicui18n.so.50
>0x00007fb6d5494e90  0x00007fb6d5547948  Yes         /lib64/libicuuc.so.50
>0x00007fb6d3e6e570  0x00007fb6d3e6e658  Yes (*)     /lib64/libicudata.so.50
>0x00007fb6d3c64ec0  0x00007fb6d3c69d98  Yes         /lib64/libenchant.so.1
>0x00007fb6d3a53000  0x00007fb6d3a59db8  Yes         /lib64/libgeoclue.so.0
>0x00007fb6d382d610  0x00007fb6d383f8b4  Yes         /lib64/libdbus-glib-1.so.2
>0x00007fb6d35e2ab0  0x00007fb6d360ca54  Yes         /lib64/libdbus-1.so.3
>0x00007fb6d33d10d0  0x00007fb6d33d6334  Yes         /lib64/libgstapp-1.0.so.0
>0x00007fb6d31912e0  0x00007fb6d31b95d4  Yes         /lib64/libgstaudio-1.0.so.0
>0x00007fb6d2f7bd60  0x00007fb6d2f82508  Yes         /lib64/libgstfft-1.0.so.0
>0x00007fb6d2d5fc10  0x00007fb6d2d6eab4  Yes         /lib64/libgstpbutils-1.0.so.0
>0x00007fb6d2b1c7c0  0x00007fb6d2b40034  Yes         /lib64/libgstvideo-1.0.so.0
>0x00007fb6d28c4370  0x00007fb6d28f9a00  Yes         /lib64/libgstbase-1.0.so.0
>0x00007fb6d25dc190  0x00007fb6d2667d5c  Yes         /lib64/libgstreamer-1.0.so.0
>0x00007fb6d2364200  0x00007fb6d239ac90  Yes         /lib64/libjpeg.so.62
>0x00007fb6d211b640  0x00007fb6d2146684  Yes         /lib64/libsecret-1.so.0
>0x00007fb6d1ed8c60  0x00007fb6d1efd218  Yes         /lib64/libxslt.so.1
>0x00007fb6d1b93870  0x00007fb6d1c7b930  Yes         /lib64/libxml2.so.2
>0x00007fb6d1915140  0x00007fb6d194e2d4  Yes         /lib64/libGL.so.1
>0x00007fb6d16e1c30  0x00007fb6d16f364c  Yes         /lib64/libEGL.so.1
>0x00007fb6d14d8ed0  0x00007fb6d14d99d0  Yes         /lib64/libdl.so.2
>0x00007fb6d12c9320  0x00007fb6d12d190c  Yes         /lib64/libpangoft2-1.0.so.0
>0x00007fb6d1094680  0x00007fb6d10b5e68  Yes         /lib64/libpng16.so.16
>0x00007fb6d0ddcfa0  0x00007fb6d0e6a760  Yes         /lib64/libsqlite3.so.0
>0x00007fb6d0b88780  0x00007fb6d0bbf7d0  Yes         /lib64/libwebp.so.4
>0x00007fb6d0978b70  0x00007fb6d097ebe8  Yes         /lib64/libXrender.so.1
>0x00007fb6d0774cd0  0x00007fb6d07756e8  Yes         /lib64/libXcomposite.so.1
>0x00007fb6d0571c40  0x00007fb6d057256c  Yes         /lib64/libXdamage.so.1
>0x00007fb6d036c5f0  0x00007fb6d036e948  Yes         /lib64/libXfixes.so.3
>0x00007fb6d01171b0  0x00007fb6d015322c  Yes         /lib64/libXt.so.6
>                                        No          /lib64/libX11.so.6
>0x00007fb6cfb9fe00  0x00007fb6cfbb8cdc  Yes         /lib64/libexpat.so.1
>                                        No          /lib64/libgraphite2.so.3
>0x00007fb6cf772240  0x00007fb6cf77c5f8  Yes         /lib64/libXi.so.6
>0x00007fb6cf54def0  0x00007fb6cf560b14  Yes         /lib64/libatk-bridge-2.0.so.0
>0x00007fb6cf341bb0  0x00007fb6cf342510  Yes         /lib64/libXinerama.so.1
>0x00007fb6cf138c30  0x00007fb6cf13e5d0  Yes         /lib64/libXrandr.so.2
>0x00007fb6cef2eab0  0x00007fb6cef33690  Yes         /lib64/libXcursor.so.1
>0x00007fb6ced23930  0x00007fb6ced276f0  Yes         /lib64/libwayland-client.so.0
>0x00007fb6ceadeb30  0x00007fb6ceaf7bd8  Yes         /lib64/libxkbcommon.so.0
>0x00007fb6ce8b81c0  0x00007fb6ce8b9c94  Yes         /lib64/libwayland-cursor.so.0
>0x00007fb6ce6a8760  0x00007fb6ce6b2460  Yes         /lib64/libXext.so.6
>0x00007fb6ce405510  0x00007fb6ce48d58c  Yes         /lib64/libpixman-1.so.0
>0x00007fb6ce1f8b90  0x00007fb6ce1f9460  Yes         /lib64/libxcb-shm.so.0
>0x00007fb6cdff1610  0x00007fb6cdff4a7c  Yes         /lib64/libxcb-render.so.0
>0x00007fb6cddd6a00  0x00007fb6cdde46c8  Yes         /lib64/libxcb.so.1
>0x00007fb6cdbc6870  0x00007fb6cdbcafe8  Yes         /lib64/libffi.so.6
>0x00007fb6cd9a74a0  0x00007fb6cd9b9fe0  Yes         /lib64/libselinux.so.1
>0x00007fb6cd78aa40  0x00007fb6cd79981c  Yes         /lib64/libresolv.so.2
>0x00007fb6dcb59b10  0x00007fb6dcb72cb0  Yes         /lib64/ld-linux-x86-64.so.2
>0x00007fb6cd558e10  0x00007fb6cd575dd4  Yes         /lib64/libgsttag-1.0.so.0
>0x00007fb6cd2d70b0  0x00007fb6cd3271c0  Yes         /lib64/liborc-0.4.so.0
>0x00007fb6cd051800  0x00007fb6cd0a0a48  Yes         /lib64/libgcrypt.so.11
>0x00007fb6cce45a30  0x00007fb6cce460a8  Yes         /lib64/libgpg-error.so.0
>0x00007fb6ccc230e0  0x00007fb6ccc39060  Yes         /lib64/liblzma.so.5
>0x00007fb6cca02e40  0x00007fb6cca0b9b0  Yes         /lib64/libglapi.so.0
>                                        No          /lib64/libX11-xcb.so.1
>0x00007fb6cc5e8030  0x00007fb6cc5efdf8  Yes         /lib64/libxcb-glx.so.0
>0x00007fb6cc3da930  0x00007fb6cc3dba88  Yes         /lib64/libxcb-dri2.so.0
>0x00007fb6cc1d4010  0x00007fb6cc1d6958  Yes         /lib64/libXxf86vm.so.1
>0x00007fb6cbfca210  0x00007fb6cbfcfb98  Yes         /lib64/libdrm.so.2
>0x00007fb6cbdc2610  0x00007fb6cbdc4748  Yes         /lib64/libxcb-xfixes.so.0
>0x00007fb6cbbbd020  0x00007fb6cbbbdbc8  Yes         /lib64/libxcb-shape.so.0
>0x00007fb6cb9b7140  0x00007fb6cb9b8cdc  Yes         /lib64/libgbm.so.1
>0x00007fb6cb7aa950  0x00007fb6cb7afae0  Yes         /lib64/libwayland-server.so.0
>0x00007fb6cb5964f0  0x00007fb6cb59ef62  Yes         /lib64/libudev.so.1
>0x00007fb6cb38cc20  0x00007fb6cb390c44  Yes         /lib64/libSM.so.6
>0x00007fb6cb173f30  0x00007fb6cb1811ec  Yes         /lib64/libICE.so.6
>0x00007fb6caf4fc50  0x00007fb6caf60448  Yes         /lib64/libatspi.so.0
>0x00007fb6cad3dee0  0x00007fb6cad3ebfc  Yes         /lib64/libXau.so.6
>0x00007fb6caad8770  0x00007fb6cab228d8  Yes         /lib64/libpcre.so.1
>0x00007fb6ca8d3510  0x00007fb6ca8d4b84  Yes         /lib64/libuuid.so.1
>0x00007fb6c3fbeef0  0x00007fb6c3fd93f8  Yes         /usr/lib64/gio/modules/libgvfsdbus.so
>0x00007fb6c3d898c0  0x00007fb6c3da1618  Yes         /lib64/libgvfscommon.so.0
>0x00007fb6c3b436d0  0x00007fb6c3b68e34  Yes         /lib64/libbluray.so.1
>0x00007fb6c393cf10  0x00007fb6c393d804  Yes         /lib64/libutil.so.1
>0x00007fb6c2f37b20  0x00007fb6c2f39174  Yes         /usr/lib64/gtk-3.0/3.0.0/theming-engines/libadwaita.so
>0x00007fb6c2d07a60  0x00007fb6c2d2ba58  Yes         /lib64/librsvg-2.so.2
>0x00007fb6c2acdcd0  0x00007fb6c2aec858  Yes         /lib64/libcroco-0.6.so.3
>0x00007fb6c28c27b0  0x00007fb6c28c2fb0  Yes         /usr/lib64/gtk-3.0/modules/libpk-gtk-module.so
>0x00007fb6c26bd170  0x00007fb6c26bf160  Yes         /usr/lib64/gtk-3.0/modules/libcanberra-gtk-module.so
>0x00007fb6c24b7d60  0x00007fb6c24b9260  Yes         /lib64/libcanberra-gtk3.so.0
>0x00007fb6c22a83f0  0x00007fb6c22b11ec  Yes         /lib64/libcanberra.so.0
>0x00007fb6c209e0f0  0x00007fb6c20a23fc  Yes         /lib64/libvorbisfile.so.3
>0x00007fb6c1e71850  0x00007fb6c1e891c0  Yes         /lib64/libvorbis.so.0
>0x00007fb6c1c68aa0  0x00007fb6c1c6b098  Yes         /lib64/libogg.so.0
>0x00007fb6c1a575b0  0x00007fb6c1a61354  Yes         /lib64/libtdb.so.1
>0x00007fb6c184d4b0  0x00007fb6c1851788  Yes         /lib64/libltdl.so.7
>0x00007fb6c1614ed0  0x00007fb6c161998c  Yes         /lib64/libcrypt.so.1
>0x00007fb6c1399d00  0x00007fb6c13ee2f0  Yes         /lib64/libfreebl3.so
>0x00007fb6c01908d0  0x00007fb6c019192c  Yes         /usr/lib64/gio/modules/libgiognomeproxy.so
>0x00007fb67adf3ab0  0x00007fb67adf8130  Yes         /usr/lib64/gio/modules/libdconfsettings.so
>0x00007fb67a3dbc40  0x00007fb67a3e7810  Yes         /usr/lib64/gio/modules/libgiognutls.so
>0x00007fb67a19f7b0  0x00007fb67a1bc35c  Yes         /lib64/libp11-kit.so.0
>0x00007fb679ea4280  0x00007fb679f59748  Yes         /lib64/libgnutls.so.28
>0x00007fb679c70b60  0x00007fb679c7cb4c  Yes         /lib64/libtasn1.so.6
>0x00007fb679a48c40  0x00007fb679a5f428  Yes         /lib64/libnettle.so.4
>0x00007fb679834750  0x00007fb67983b618  Yes         /lib64/libhogweed.so.2
>0x00007fb6795c5040  0x00007fb679617dc4  Yes         /lib64/libgmp.so.10
>0x00007fb67938bd00  0x00007fb6793a32e4  Yes         /usr/lib64/pkcs11/p11-kit-trust.so
>0x00007fb67916ed50  0x00007fb679178c9c  Yes         /usr/lib64/pkcs11/gnome-keyring-pkcs11.so
>0x00007fb678f696e0  0x00007fb678f697f8  Yes         /usr/lib64/webkit2gtk-3.0/injected-bundle/libwebkit2gtkinjectedbundle.so
>0x00007fb678d5e8d0  0x00007fb678d6460c  Yes         /usr/lib64/epiphany/3.10/web-extensions/libephywebextension.so
>0x00007fb6617ed1e0  0x00007fb6617f44a4  Yes         /lib64/libnss_files.so.2
>0x00007fb6615e8c40  0x00007fb6615e9880  Yes         /lib64/libnss_mdns4_minimal.so.2
>0x00007fb6613e3100  0x00007fb6613e64b8  Yes         /lib64/libnss_dns.so.2
>0x00007fb6604751e0  0x00007fb6604a7dc0  Yes         /usr/lib64/gstreamer-1.0/libgstplayback.so
>0x00007fb64f5c8920  0x00007fb64f5cda38  Yes         /usr/lib64/gstreamer-1.0/libgstdebugutilsbad.so
>0x00007fb64f3a7bc0  0x00007fb64f3bbadc  Yes         /usr/lib64/gstreamer-1.0/libgstaudiofx.so
>0x00007fb64f190030  0x00007fb64f19c9e4  Yes         /usr/lib64/gstreamer-1.0/libgstaudioconvert.so
>0x00007fb64d736bc0  0x00007fb64d740228  Yes         /usr/lib64/gstreamer-1.0/libgstaudioresample.so
>0x00007fb64d52e0b0  0x00007fb64d5314a4  Yes         /lib64/liborc-test-0.4.so.0
>0x00007fb64d3250a0  0x00007fb64d328e20  Yes         /usr/lib64/gstreamer-1.0/libgstautodetect.so
>0x00007fb64d0e8f90  0x00007fb64d11171c  Yes         /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>0x00007fb64cecd110  0x00007fb64ceda4a0  Yes         /usr/lib64/gstreamer-1.0/libgstpulse.so
>0x00007fb64cc87650  0x00007fb64ccb3f18  Yes         /lib64/libpulse.so.0
>0x00007fb64ca72ec0  0x00007fb64ca775d4  Yes         /lib64/libjson-c.so.2
>0x00007fb64c8151a0  0x00007fb64c85149c  Yes         /usr/lib64/pulseaudio/libpulsecommon-4.0.so
>0x00007fb64c1b14c0  0x00007fb64c1b3e58  Yes         /lib64/libXtst.so.6
>0x00007fb6275f73e0  0x00007fb6275faeb8  Yes         /lib64/libwrap.so.0
>0x00007fb62739b3e0  0x00007fb6273d430c  Yes         /lib64/libsndfile.so.1
>0x00007fb627190380  0x00007fb6271929f8  Yes         /lib64/libasyncns.so.0
>0x00007fb626f8b620  0x00007fb626f8ce58  Yes         /lib64/libcap.so.2
>0x00007fb626d75110  0x00007fb626d81d94  Yes         /lib64/libnsl.so.1
>0x00007fb626b66340  0x00007fb626b6e334  Yes         /lib64/libgsm.so.1
>0x00007fb6269290c0  0x00007fb62695a190  Yes         /lib64/libFLAC.so.8
>0x00007fb626464b60  0x00007fb62646717c  Yes         /lib64/libvorbisenc.so.2
>0x00007fb62624d3d0  0x00007fb62624f41c  Yes         /lib64/libattr.so.1
>0x00007fb622049740  0x00007fb622049870  Yes         /usr/lib64/gstreamer-1.0/libgstapp.so
>0x00007fb621632bd0  0x00007fb621640ac8  Yes         /usr/lib64/gstreamer-1.0/libgsttypefindfunctions.so
>0x00007fb621406480  0x00007fb621425494  Yes         /usr/lib64/gstreamer-1.0/libgstogg.so
>0x00007fb6211f2a50  0x00007fb6211fa928  Yes         /lib64/libgstriff-1.0.so.0
>0x00007fb6207e5760  0x00007fb6207eb630  Yes         /usr/lib64/gstreamer-1.0/libgsttheora.so
>0x00007fb6205b5970  0x00007fb6205cd73c  Yes         /lib64/libtheoraenc.so.1
>0x00007fb6203a57f0  0x00007fb6203b060c  Yes         /lib64/libtheoradec.so.1
>0x00007fb62019a240  0x00007fb6201a0270  Yes         /usr/lib64/gstreamer-1.0/libgstvideofilter.so
>0x00007fb61ff817a0  0x00007fb61ff8fcc4  Yes         /usr/lib64/gstreamer-1.0/libgstvideoconvert.so
>0x00007fb61fd659d0  0x00007fb61fd7909c  Yes         /usr/lib64/gstreamer-1.0/libgstvideoscale.so
>0x00007fb61fb22120  0x00007fb61fb5bcfc  Yes         /usr/lib64/gstreamer-1.0/libgstdeinterlace.so
>0x00007fb64e315c00  0x00007fb64e315fcc  Yes         /usr/lib64/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-svg.so
>(*): Shared library is missing debugging information.
>$1 = 0x0
>$2 = 0x0
>rax            0x0	0
>rbx            0x7fb64f959700	140420995979008
>rcx            0x38	56
>rdx            0x0	0
>rsi            0x0	0
>rdi            0x7fb64f959700	140420995979008
>rbp            0x0	0x0
>rsp            0x7fff2ef9bed8	0x7fff2ef9bed8
>r8             0x1	1
>r9             0x7fb622a36b90	140420241910672
>r10            0x38	56
>r11            0x7	7
>r12            0x0	0
>r13            0xffffffff	4294967295
>r14            0x3	3
>r15            0x7fb622a36b90	140420241910672
>rip            0x7fb6dac59c34	0x7fb6dac59c34 <WebCore::RenderLayerCompositor::pageTiledBacking() const+4>
>eflags         0x10202	[ IF RF ]
>cs             0x33	51
>ss             0x2b	43
>ds             0x0	0
>es             0x0	0
>fs             0x0	0
>gs             0x0	0
>st0            *value not available*
>st1            *value not available*
>st2            *value not available*
>st3            *value not available*
>st4            *value not available*
>st5            *value not available*
>st6            *value not available*
>st7            *value not available*
>fctrl          *value not available*
>fstat          *value not available*
>ftag           *value not available*
>fiseg          *value not available*
>fioff          *value not available*
>foseg          *value not available*
>fooff          *value not available*
>fop            *value not available*
>mxcsr          *value not available*
>ymm0           *value not available*
>ymm1           *value not available*
>ymm2           *value not available*
>ymm3           *value not available*
>ymm4           *value not available*
>ymm5           *value not available*
>ymm6           *value not available*
>ymm7           *value not available*
>ymm8           *value not available*
>ymm9           *value not available*
>ymm10          *value not available*
>ymm11          *value not available*
>ymm12          *value not available*
>ymm13          *value not available*
>ymm14          *value not available*
>ymm15          *value not available*
>Dump of assembler code for function WebCore::RenderLayerCompositor::pageTiledBacking() const:
>   0x00007fb6dac59c30 <+0>:	mov    0x10(%rdi),%rax
>=> 0x00007fb6dac59c34 <+4>:	mov    0x38(%rax),%rax
>   0x00007fb6dac59c38 <+8>:	mov    0x120(%rax),%rdi
>   0x00007fb6dac59c3f <+15>:	test   %rdi,%rdi
>   0x00007fb6dac59c42 <+18>:	je     0x7fb6dac59c50 <WebCore::RenderLayerCompositor::pageTiledBacking() const+32>
>   0x00007fb6dac59c44 <+20>:	jmpq   0x7fb6dac4ff10 <WebCore::RenderLayerBacking::tiledBacking() const>
>   0x00007fb6dac59c49 <+25>:	nopl   0x0(%rax)
>   0x00007fb6dac59c50 <+32>:	xor    %eax,%eax
>   0x00007fb6dac59c52 <+34>:	retq   
>End of assembler dump.

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Attachments on bug 1047175: 843172 | 843173 | 843174 | 843175 | 843176 | 843177 | 843178 | 843179 | 843180 | 843181