.
Thread 10 (LWP 6517):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x0000003dd4a22610 in PR_WaitCondVar (cvar=0x1647560, timeout=4294967295) at ptsynch.c:385
        rv = <optimized out>
        thred = 0x1647600
#2  0x0000003ffbcbacd7 in ?? () from /tmp/apport_sandbox_Tc67Mh/usr/lib/libmozjs185.so.1.0
No symbol table info available.
#3  0x0000003dd4a27e13 in _pt_root (arg=0x1647600) at ptthread.c:156
        thred = 0x1647600
        detached = 0
#4  0x0000003efa407f8e in start_thread (arg=0x7ffc2582e700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7ffc2582e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140720937821952, 2058648698486438183, 1, 270476128352, 140737028878048, 4096, -2059973447769212633, 2084109539253467431}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x0000003ef9cf9e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 9 (LWP 6516):
#0  0x0000003ef9ced3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x0000003ffc830cdf in ?? ()
No symbol table info available.
#2  0x00000000015d81f0 in ?? ()
No symbol table info available.
#3  0xffffffffffffffff in ?? ()
No symbol table info available.
#4  0x0000000000000001 in ?? ()
No symbol table info available.
#5  0x0000003ef9a23060 in ?? ()
No symbol table info available.
#6  0x0000003efa411740 in ?? () from /tmp/apport_sandbox_Tc67Mh/lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#7  0x00000000015d81f0 in ?? ()
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 8 (LWP 6514):
#0  0x0000003ef9ced3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x0000003ff0e491dc in ?? ()
No symbol table info available.
#2  0x00007ffc28011400 in ?? ()
No symbol table info available.
#3  0xffffffff7fffffff in ?? ()
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 7 (LWP 6883):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x0000003ff0e88935 in ?? ()
No symbol table info available.
#2  0x000000000000005a in ?? ()
No symbol table info available.
#3  0x000000002af98a88 in ?? ()
No symbol table info available.
#4  0x0000000002f8c680 in ?? ()
No symbol table info available.
#5  0x0000000001810008 in ?? ()
No symbol table info available.
#6  0x000000000180fff0 in ?? ()
No symbol table info available.
#7  0x0000003ff0e1eb81 in ?? ()
No symbol table info available.
#8  0x00000000018fb9a0 in ?? ()
No symbol table info available.
#9  0x0000000002f8c680 in ?? ()
No symbol table info available.
#10 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 6 (LWP 6885):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x0000003ff0e88935 in ?? ()
No symbol table info available.
#2  0x000000000000005a in ?? ()
No symbol table info available.
#3  0x000000002a7241b8 in ?? ()
No symbol table info available.
#4  0x0000000002f8c4e0 in ?? ()
No symbol table info available.
#5  0x0000000001810008 in ?? ()
No symbol table info available.
#6  0x000000000180fff0 in ?? ()
No symbol table info available.
#7  0x0000003ff0e1eb81 in ?? ()
No symbol table info available.
#8  0x00000000018fb9a0 in ?? ()
No symbol table info available.
#9  0x0000000002f8c4e0 in ?? ()
No symbol table info available.
#10 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 5 (LWP 6884):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x0000003ff0e88935 in ?? ()
No symbol table info available.
#2  0x000000000000005a in ?? ()
No symbol table info available.
#3  0x000000002a7f8c10 in ?? ()
No symbol table info available.
#4  0x00000000034fb050 in ?? ()
No symbol table info available.
#5  0x0000000001810008 in ?? ()
No symbol table info available.
#6  0x000000000180fff0 in ?? ()
No symbol table info available.
#7  0x0000003ff0e1eb81 in ?? ()
No symbol table info available.
#8  0x00000000018fb9a0 in ?? ()
No symbol table info available.
#9  0x00000000034fb050 in ?? ()
No symbol table info available.
#10 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 4 (LWP 6882):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x0000003ff0e88935 in ?? ()
No symbol table info available.
#2  0x000000000000005a in ?? ()
No symbol table info available.
#3  0x0000000028c06750 in ?? ()
No symbol table info available.
#4  0x0000000002f8c340 in ?? ()
No symbol table info available.
#5  0x0000000001810008 in ?? ()
No symbol table info available.
#6  0x000000000180fff0 in ?? ()
No symbol table info available.
#7  0x0000003ff0e1eb81 in ?? ()
No symbol table info available.
#8  0x00000000018fb9a0 in ?? ()
No symbol table info available.
#9  0x0000000002f8c340 in ?? ()
No symbol table info available.
#10 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 6518):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x0000003ff0e88935 in ?? ()
No symbol table info available.
#2  0x000000000000005a in ?? ()
No symbol table info available.
#3  0x0000000029159018 in ?? ()
No symbol table info available.
#4  0x0000000002f8c410 in ?? ()
No symbol table info available.
#5  0x0000000001810008 in ?? ()
No symbol table info available.
#6  0x000000000180fff0 in ?? ()
No symbol table info available.
#7  0x0000003ff0e1eb81 in ?? ()
No symbol table info available.
#8  0x00000000018fb9a0 in ?? ()
No symbol table info available.
#9  0x0000000002f8c410 in ?? ()
No symbol table info available.
#10 0x0000000000003a98 in ?? ()
No symbol table info available.
#11 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 6513):
#0  0x0000003ef9ced3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x0000003ff0e491dc in ?? ()
No symbol table info available.
#2  0x0000000000fe42a0 in ?? ()
No symbol table info available.
#3  0xffffffff7fffffff in ?? ()
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 6507):
#0  IA__FcConfigSubstituteWithPat (config=config@entry=0x22dee70, p=p@entry=0x35ed9a0, p_pat=p_pat@entry=0x35ed630, kind=kind@entry=FcMatchFont) at fccfg.c:1474
        s = 0x22cd2d0
        st = 0x35ed9f0
        i = <optimized out>
        t = 0x201020201010202
        e = <optimized out>
        l = <optimized out>
        m = <optimized out>
        strs = <optimized out>
#1  0x0000003564217d09 in IA__FcFontRenderPrepare (config=config@entry=0x22dee70, pat=pat@entry=0x35ed630, font=<optimized out>) at fcmatch.c:561
        new = 0x35ed9a0
        i = <optimized out>
        fe = <optimized out>
        pe = <optimized out>
        fel = <optimized out>
        pel = <optimized out>
        v = {type = FcTypeString, u = {s = 0x22431a0 "gnome-shell", i = 35926432, b = 35926432, d = 1.7750015828851627e-316, m = 0x22431a0, c = 0x22431a0, f = 0x22431a0, l = 0x22431a0}}
        result = FcResultMatch
        __PRETTY_FUNCTION__ = "IA__FcFontRenderPrepare"
#2  0x0000003564218235 in IA__FcFontMatch (config=0x22dee70, p=0x35ed630, result=<optimized out>) at fcmatch.c:696
        sets = {0x225bbe0, 0x2}
        nsets = <optimized out>
        best = <optimized out>
        __PRETTY_FUNCTION__ = "IA__FcFontMatch"
#3  0x0000003ff3a0a655 in ?? ()
No symbol table info available.
#4  0x0000000000000000 in ?? ()
No symbol table info available.