.
Thread 13 (Thread 0x7f2d63fff700 (LWP 2683)):
#0  0x00007f2da3bf2786 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f2d63ffe490, expected=0, futex_word=0x55a02390c544) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
        __ret = -516
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d63ffe410, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 349, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 174
#1  0x00007f2da3bf2786 in __pthread_cond_wait_common (abstime=0x7f2d63ffe490, mutex=0x55a02390c568, cond=0x55a02390c518) at pthread_cond_wait.c:539
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d63ffe410, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 349, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 174
#2  0x00007f2da3bf2786 in __pthread_cond_timedwait (cond=0x55a02390c518, mutex=0x55a02390c568, abstime=0x7f2d63ffe490) at pthread_cond_wait.c:667
#3  0x00007f2d97b396e9 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#4  0x00007f2d97b39b3c in VBoxNsprPR_WaitCondVar () at /usr/lib/virtualbox/VBoxXPCOM.so
#5  0x00007f2d97b39dd9 in VBoxNsprPR_Wait () at /usr/lib/virtualbox/VBoxXPCOM.so
#6  0x00007f2d806921af in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#7  0x00007f2d8069329a in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#8  0x00007f2d806993ef in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#9  0x00007f2d97b1973d in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#10 0x00007f2d97b18b13 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#11 0x000055a0239c4ab0 in  ()
#12 0x00007f2d63ffe958 in  ()
#13 0x00007f2d63ffe94c in  ()
#14 0x0000000000000000 in  ()
.
Thread 12 (Thread 0x7f2d637fe700 (LWP 2684)):
#0  0x00007f2da3bf2786 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f2d637fd490, expected=0, futex_word=0x55a02390c544) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
        __ret = -516
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d637fd410, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 347, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 173
#1  0x00007f2da3bf2786 in __pthread_cond_wait_common (abstime=0x7f2d637fd490, mutex=0x55a02390c568, cond=0x55a02390c518) at pthread_cond_wait.c:539
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d637fd410, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 347, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 173
#2  0x00007f2da3bf2786 in __pthread_cond_timedwait (cond=0x55a02390c518, mutex=0x55a02390c568, abstime=0x7f2d637fd490) at pthread_cond_wait.c:667
#3  0x00007f2d97b396e9 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#4  0x00007f2d97b39b3c in VBoxNsprPR_WaitCondVar () at /usr/lib/virtualbox/VBoxXPCOM.so
#5  0x00007f2d97b39dd9 in VBoxNsprPR_Wait () at /usr/lib/virtualbox/VBoxXPCOM.so
#6  0x00007f2d806921af in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#7  0x00007f2d8069329a in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#8  0x00007f2d806993ef in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#9  0x00007f2d97b1973d in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#10 0x00007f2d97b18b13 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#11 0x000055a0239c4460 in  ()
#12 0x00007f2d637fd958 in  ()
#13 0x00007f2d637fd94c in  ()
#14 0x0000000000000000 in  ()
.
Thread 11 (Thread 0x7f2d73ded700 (LWP 2654)):
#0  0x00007f2da3708901 in __GI___poll (fds=0x7f2d73decbd0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2d97b36abf in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#2  0x00007f2d97b38938 in VBoxNsprPR_Poll () at /usr/lib/virtualbox/VBoxXPCOM.so
#3  0x00007f2d8069e6e0 in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#4  0x00007f2d97b3a92d in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#5  0x00007f2da3267c0c in  () at /usr/lib/virtualbox/VBoxRT.so
#6  0x00007f2da3300a0b in  () at /usr/lib/virtualbox/VBoxRT.so
#7  0x00007f2da3beb7fc in start_thread (arg=0x7f2d73ded700) at pthread_create.c:465
        pd = 0x7f2d73ded700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833194239744, -3585351358600854879, 140720591160910, 140720591160911, 139833194239744, 139833194240448, 3487090488547328673, 3487196313028772513}, 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"
#8  0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 10 (Thread 0x7f2d9a12c700 (LWP 2640)):
#0  0x00007f2da3708901 in __GI___poll (fds=0x7f2d9a12bd78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2d98768747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2d9876a53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2d9212d029 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f2d971d214d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2da3beb7fc in start_thread (arg=0x7f2d9a12c700) at pthread_create.c:465
        pd = 0x7f2d9a12c700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833835177728, -3585351358600854879, 140720591186990, 140720591186991, 139833835177728, 17, 3487318599092257441, 3487196313028772513}, 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"
#6  0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 9 (Thread 0x7f2d72aac700 (LWP 2678)):
#0  0x00007f2da3bf2786 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f2d72aabda0, expected=0, futex_word=0x55a0239497e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
        __ret = -516
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d72aabd20, __canceltype = 1923792288, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55a0239497c0, mutex = 0x55a0239497f0, private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 0
#1  0x00007f2da3bf2786 in __pthread_cond_wait_common (abstime=0x7f2d72aabda0, mutex=0x55a0239497f0, cond=0x55a0239497c0) at pthread_cond_wait.c:539
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d72aabd20, __canceltype = 1923792288, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55a0239497c0, mutex = 0x55a0239497f0, private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 0
#2  0x00007f2da3bf2786 in __pthread_cond_timedwait (cond=0x55a0239497c0, mutex=0x55a0239497f0, abstime=0x7f2d72aabda0) at pthread_cond_wait.c:667
#3  0x00007f2da33038a6 in RTSemEventWait () at /usr/lib/virtualbox/VBoxRT.so
#4  0x00007f2d72dd6767 in  () at /usr/lib/virtualbox/components/VBoxC.so
#5  0x00007f2da3267c0c in  () at /usr/lib/virtualbox/VBoxRT.so
#6  0x00007f2da3300a0b in  () at /usr/lib/virtualbox/VBoxRT.so
#7  0x00007f2da3beb7fc in start_thread (arg=0x7f2d72aac700) at pthread_create.c:465
        pd = 0x7f2d72aac700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833174050560, -3585351358600854879, 140720591180398, 140720591180399, 139833174050560, 139833174051264, 3487088732442575521, 3487196313028772513}, 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"
#8  0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 8 (Thread 0x7f2d823f2700 (LWP 2643)):
#0  0x00007f2da3708901 in __GI___poll (fds=0x7f2d7800f720, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2d9347b169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d9347b27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d9740900f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2d973ae1ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2d971cd27a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d91c39e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f2d971d214d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2da3beb7fc in start_thread (arg=0x7f2d823f2700) at pthread_create.c:465
        pd = 0x7f2d823f2700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833435432704, -3585351358600854879, 140720591187166, 140720591187167, 139833435432704, 139833435433408, 3487265578794730145, 3487196313028772513}, 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"
#9  0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 7 (Thread 0x7f2d70d4b700 (LWP 2682)):
#0  0x00007f2da3bf2786 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f2d70d4a490, expected=0, futex_word=0x55a02390c544) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
        __ret = -516
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d70d4a410, __canceltype = 596685576, __prev = 0x0}
        cbuffer = {wseq = 345, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 172
#1  0x00007f2da3bf2786 in __pthread_cond_wait_common (abstime=0x7f2d70d4a490, mutex=0x55a02390c568, cond=0x55a02390c518) at pthread_cond_wait.c:539
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d70d4a410, __canceltype = 596685576, __prev = 0x0}
        cbuffer = {wseq = 345, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 172
#2  0x00007f2da3bf2786 in __pthread_cond_timedwait (cond=0x55a02390c518, mutex=0x55a02390c568, abstime=0x7f2d70d4a490) at pthread_cond_wait.c:667
#3  0x00007f2d97b396e9 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#4  0x00007f2d97b39b3c in VBoxNsprPR_WaitCondVar () at /usr/lib/virtualbox/VBoxXPCOM.so
#5  0x00007f2d97b39dd9 in VBoxNsprPR_Wait () at /usr/lib/virtualbox/VBoxXPCOM.so
#6  0x00007f2d806921af in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#7  0x00007f2d8069329a in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#8  0x00007f2d806993ef in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#9  0x00007f2d97b1973d in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#10 0x00007f2d97b18b13 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#11 0x000055a0239c72e0 in  ()
#12 0x00007f2d70d4a958 in  ()
#13 0x00007f2d70d4a94c in  ()
#14 0x0000000000000000 in  ()
.
Thread 6 (Thread 0x7f2d7222a700 (LWP 2680)):
#0  0x00007f2da3bf2786 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f2d72229b70, expected=0, futex_word=0x55a0239883d8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
        __ret = -516
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d72229af0, __canceltype = 1914870640, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55a0239883b0, mutex = 0x55a0239883e0, private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 0
#1  0x00007f2da3bf2786 in __pthread_cond_wait_common (abstime=0x7f2d72229b70, mutex=0x55a0239883e0, cond=0x55a0239883b0) at pthread_cond_wait.c:539
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d72229af0, __canceltype = 1914870640, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55a0239883b0, mutex = 0x55a0239883e0, private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 0
#2  0x00007f2da3bf2786 in __pthread_cond_timedwait (cond=0x55a0239883b0, mutex=0x55a0239883e0, abstime=0x7f2d72229b70) at pthread_cond_wait.c:667
#3  0x00007f2da33038a6 in RTSemEventWait () at /usr/lib/virtualbox/VBoxRT.so
#4  0x00007f2d72d3c333 in  () at /usr/lib/virtualbox/components/VBoxC.so
#5  0x00007f2d72d3c51c in  () at /usr/lib/virtualbox/components/VBoxC.so
#6  0x00007f2d72e9c19f in  () at /usr/lib/virtualbox/components/VBoxC.so
#7  0x00007f2d99020a7c in  () at /usr/lib/virtualbox/VirtualBox.so
#8  0x00007f2d98cf4e13 in  () at /usr/lib/virtualbox/VirtualBox.so
#9  0x00007f2d971d214d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2da3beb7fc in start_thread (arg=0x7f2d7222a700) at pthread_create.c:465
        pd = 0x7f2d7222a700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833165129472, -3585351358600854879, 140720591179934, 140720591179935, 139833165129472, 139833165130176, 3487089764308468385, 3487196313028772513}, 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 0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 5 (Thread 0x7f2d72a2b700 (LWP 2679)):
#0  0x00007f2da3bf2786 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f2d72a2a850, expected=0, futex_word=0x55a02390c544) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
        __ret = -516
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d72a2a7d0, __canceltype = 80, __prev = 0x0}
        cbuffer = {wseq = 343, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 171
#1  0x00007f2da3bf2786 in __pthread_cond_wait_common (abstime=0x7f2d72a2a850, mutex=0x55a02390c568, cond=0x55a02390c518) at pthread_cond_wait.c:539
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d72a2a7d0, __canceltype = 80, __prev = 0x0}
        cbuffer = {wseq = 343, cond = 0x55a02390c518, mutex = 0x55a02390c568, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        maxspin = 0
        signals = 0
        result = 0
        seq = 171
#2  0x00007f2da3bf2786 in __pthread_cond_timedwait (cond=0x55a02390c518, mutex=0x55a02390c568, abstime=0x7f2d72a2a850) at pthread_cond_wait.c:667
#3  0x00007f2d97b396e9 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#4  0x00007f2d97b39b3c in VBoxNsprPR_WaitCondVar () at /usr/lib/virtualbox/VBoxXPCOM.so
#5  0x00007f2d97b39dd9 in VBoxNsprPR_Wait () at /usr/lib/virtualbox/VBoxXPCOM.so
#6  0x00007f2d806921af in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#7  0x00007f2d8069329a in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#8  0x00007f2d806993ef in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#9  0x00007f2d97b1973d in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#10 0x00007f2d97b18b13 in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#11 0x000055a023985e60 in  ()
#12 0x000055a023986010 in  ()
#13 0x00000000000001f4 in  ()
#14 0x00007f2d72a2ad00 in  ()
#15 0x00000000000001f4 in  ()
#16 0x00007f2d5c003120 in  ()
#17 0x0000000000000000 in  ()
.
Thread 4 (Thread 0x7f2d73d6c700 (LWP 2655)):
#0  0x00007f2da3bf2072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a02390ade0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
        __ret = -512
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d73d6bd60, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55a02390adb8, mutex = 0x55a02390ae08, private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        signals = 0
        result = 0
        seq = 0
#1  0x00007f2da3bf2072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55a02390ae08, cond=0x55a02390adb8) at pthread_cond_wait.c:502
        spin = 0
        buffer = {__routine = 0x7f2da3bf1e00 <__condvar_cleanup_waiting>, __arg = 0x7f2d73d6bd60, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55a02390adb8, mutex = 0x55a02390ae08, private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        signals = 0
        result = 0
        seq = 0
#2  0x00007f2da3bf2072 in __pthread_cond_wait (cond=0x55a02390adb8, mutex=0x55a02390ae08) at pthread_cond_wait.c:655
#3  0x00007f2d97b39b99 in VBoxNsprPR_WaitCondVar () at /usr/lib/virtualbox/VBoxXPCOM.so
#4  0x00007f2d97b39dd9 in VBoxNsprPR_Wait () at /usr/lib/virtualbox/VBoxXPCOM.so
#5  0x00007f2d8069b965 in  () at /usr/lib/virtualbox/components/VBoxXPCOMIPCC.so
#6  0x00007f2d97b0cc4f in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#7  0x00007f2d97b3a92d in  () at /usr/lib/virtualbox/VBoxXPCOM.so
#8  0x00007f2da3267c0c in  () at /usr/lib/virtualbox/VBoxRT.so
#9  0x00007f2da3300a0b in  () at /usr/lib/virtualbox/VBoxRT.so
#10 0x00007f2da3beb7fc in start_thread (arg=0x7f2d73d6c700) at pthread_create.c:465
        pd = 0x7f2d73d6c700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833193711360, -3585351358600854879, 140720591162174, 140720591162175, 139833193711360, 139833193712064, 3487090416069755553, 3487196313028772513}, 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 0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 3 (Thread 0x7f2d83e8a700 (LWP 2642)):
#0  0x00007f2da3708901 in __GI___poll (fds=0x55a0233e5df0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2d9347b169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d9347b502 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d8781ab26 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f2d934a2645 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2da3beb7fc in start_thread (arg=0x7f2d83e8a700) at pthread_create.c:465
        pd = 0x7f2d83e8a700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833463318272, -3585351358600854879, 140720591182942, 140720591182943, 139833463318272, 139833463318976, 3487266321824072353, 3487196313028772513}, 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"
#6  0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 2 (Thread 0x7f2d8468b700 (LWP 2641)):
#0  0x00007f2da3708901 in __GI___poll (fds=0x55a0233d3d00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2d9347b169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d9347b27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d9347b2c1 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2d934a2645 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2da3beb7fc in start_thread (arg=0x7f2d8468b700) at pthread_create.c:465
        pd = 0x7f2d8468b700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139833471710976, -3585351358600854879, 140720591182558, 140720591182559, 139833471710976, 139833471711680, 3487278415915106977, 3487196313028772513}, 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"
#6  0x00007f2da3714b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
.
Thread 1 (Thread 0x7f2da4006b80 (LWP 2626)):
#0  0x00007f2da36370bb in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {8192, 272, 206158430232, 140720591186048, 140720591185856, 40, 48, 4887535095258628352, 94146280617152, 94146279598128, 94146279598432, 139833995275296, 0, 144, 128, 139833991812372}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f2da3638f5d in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7ffc10d9a880, sa_sigaction = 0x7ffc10d9a880}, sa_mask = {__val = {139833792439968, 140720591186064, 3, 0, 140720591186576, 140720591186544, 139833999716348, 140720591186168, 139833999740728, 140720591186400, 139833785431219, 140720591186544, 0, 140720591186576, 4887535095258628352, 140720591186576}}, sa_flags = 282700024, sa_restorer = 0x7ffc10d9aa90}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f2d971bcfe7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f2d973dc01e in QObjectPrivate::QObjectPrivate(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2d70d8a05d in QSvgRenderer::QSvgRenderer(QString const&, QObject*) () at /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5
#5  0x00007f2d7034712c in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/iconengines/libqsvgicon.so
#6  0x00007f2d70345329 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/iconengines/libqsvgicon.so
#7  0x00007f2d96b45d42 in  () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#8  0x00007f2d96b4ab7d in QIcon::addFile(QString const&, QSize const&, QIcon::Mode, QIcon::State) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#9  0x00007f2d96b4ad03 in QIcon::QIcon(QString const&) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007f2d98dee4b6 in  () at /usr/lib/virtualbox/VirtualBox.so
#11 0x00007f2d98dfad34 in  () at /usr/lib/virtualbox/VirtualBox.so
#12 0x00007f2d98dfae12 in  () at /usr/lib/virtualbox/VirtualBox.so
#13 0x00007f2d98d296af in  () at /usr/lib/virtualbox/VirtualBox.so
#14 0x00007f2d990817a5 in  () at /usr/lib/virtualbox/VirtualBox.so
#15 0x00007f2d973df7e2 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f2d962ce59c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f2d962d5e64 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f2d973b0178 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f2d973b28ed in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f2d974099e3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f2d9347afb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f2d9347b1f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f2d9347b27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f2d9740900f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f2d973ae1ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f2d973b7134 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f2d98c98e93 in TrustedMain () at /usr/lib/virtualbox/VirtualBox.so
#28 0x00007f2da36211c1 in __libc_start_main (main=0x55a021f6c7b0, argc=1, argv=0x7ffc10d9b4d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc10d9b4c8) at ../csu/libc-start.c:308
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 7313289449763357345, 94146252949744, 140720591189200, 0, 0, 3586664500010533537, 3487196971051238049}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffc10d9b4e8, 0x7f2da402c150}, data = {prev = 0x0, cleanup = 0x0, canceltype = 282703080}}}
        not_first_call = <optimized out>
#29 0x000055a021f6c91a in  ()