backtrace:
#0  0x00007fffe7ef2ab0 in __nanosleep_nocancel () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fffe7ef2964 in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:137
        ts = {tv_sec = 0, tv_nsec = 627464894}
        set = {__val = {65536, 0 <repeats 15 times>}}
        oset = {__val = {0, 140737090000906, 4294967295, 140737098995680, 140737083865248, 140737353883648, 140737353883648, 140737085080861, 140733193388032, 0, 140737087745440, 140737354113472, 137438953472, 0, 0, 140737488331352}}
        result = <optimized out>
#2  0x00007fffe8422925 in bu_backtrace (fp=0x651f50) at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/backtrace.c:376
        start = {tv_sec = 1423554145, tv_usec = 851667}
        end = {tv_sec = 1423554145, tv_usec = 851668}
#3  0x00007fffe842a899 in bu_crashreport (filename=0x7fffe86690c0 <tracefile> "g-stl-28620-bomb.log") at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/crashreport.c:92
No locals.
#4  0x00007fffe84256ef in bu_bomb (str=0x7fffffffa510 "ERROR: bad pointer 0x652340: s/b vertex(x123123), was Unknown_Magic(x6523f0), file /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_mod.c, line 1007\n") at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/bomb.c:164
No locals.
#5  0x00007fffe8422b6a in bu_badmagic (ptr=0x652340, magic=1192227, str=0x7fffe946b709 "vertex", file=0x7fffe946b460 "/home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_mod.c", line=1007) at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/badmagic.c:49
        buf = "ERROR: bad pointer 0x652340: s/b vertex(x123123), was Unknown_Magic(x6523f0), file /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_mod.c, line 1007\n", '\000' <repeats 343 times>
#6  0x00007fffe927f6b5 in nmg_cmface (s=0x619780, verts=0x7fffffffaa60, n=3) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_mod.c:1007
        _ptrval = 6628160
        fu = 0xe8f0c000
        eu = 0x6520e0
        eur = 0x619780
        euold = 0x0
        lu = 0x651f50
        vu = 0x652080
        i = 1
#7  0x00007fffe930e34a in tesselate_pipe_linear (start_pt=0x7fffffffac40, orad=0.15625, irad=0, end_pt=0x7fffffffad80, end_orad=0.15625, end_irad=0, arc_segs=6, sin_del=0.8660254037844386, cos_del=0.50000000000000011, outer_loop=0x7fffffffab98, inner_loop=0x7fffffffaba0, r1=0x7fffffffacc0, r2=0x7ffffffface0, s=0x619780, tol=0x605760 <tol>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/pipe/pipe.c:2690
        pt = {0, 0.78125, 0.3125}
        y = 0.8660254037844386
        xnew = 0.50000000000000011
        fu_prev = 0x0
        x = 0.50000000000000011
        ynew = 0.8660254037844386
        new_outer_loop = 0x61a7f0
        new_inner_loop = 0x0
        verts = {0x61a5a8, 0x61a7f0, 0x61a7f8}
        fu = 0x652080
        norms = 0x651eb0
        n = {0, 0, 1}
        slope = 0
        seg_len = 1.1102230246251565e-16
        i = 0
        j = 1
#8  0x00007fffe931b394 in rt_pipe_tess (r=0x7fffffffae28, m=0x618b50, ip=0x7fffffffaf80, ttol=0x605740 <ttol>, tol=0x605760 <tol>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/pipe/pipe.c:3864
        n2 = {0, -1, 0}
        norm = {-1, -0, -0}
        angle = 1.5707963267948966
        dist_to_bend = 0.31249999999999994
        bend_start = {0, 0.625, 0.31250000000000006}
        bend_center = {0, 0.31250000000000006, 0.3125}
        n1 = {0, 0, -1}
        v1 = {-0, -0, -1}
        bend_end = {0, 0.625, 0.31249999999999994}
        pp1 = 0x618760
        pp2 = 0x6187b0
        pp3 = 0x619100
        curr_pt = {0, 0.625, 0.31249999999999994}
        s = 0x619780
        pip = 0x618c20
        arc_segs = 6
        tol_segs = 3
        max_diam = 0.3125
        pipe_size = 13.258252147247767
        curr_od = 0.3125
        curr_id = 0
        delta_angle = 1.0471975511965976
        sin_del = 0.8660254037844386
        cos_del = 0.50000000000000011
        min_pt = {0, 0, 0}
        max_pt = {0, 9.375, 9.375}
        min_to_max = {0, 9.375, 9.375}
        r1 = {0, 1, -2.2204460492503131e-16}
        r2 = {1, 0, 0}
        outer_loop = 0x61a5a0
        inner_loop = 0x619890
#9  0x00007fffe91afb88 in nmg_booltree_leaf_tess (tsp=0x7fffffffb1c0, pathp=0x619350, ip=0x7fffffffaf80, UNUSED_client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_bool.c:1202
        m = 0x618b50
        r1 = 0x619730
        curtree = 0x7fffffffb208
        dp = 0x64b900
#10 0x00007fffe8faa171 in db_recurse (tsp=0x7fffffffb1c0, pathp=0x619350, region_start_statepp=0x7fffffffb648, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1162
        dp = 0x64b900
        intern = {idb_magic = 230414439, idb_major_type = 1, idb_minor_type = 15, idb_meth = 0x7fffe96cafe0 <OBJ+5280>, idb_ptr = 0x618c20, idb_avs = {magic = 1098273569, count = 0, max = 0, readonly_min = 0x0, readonly_max = 0x0, avp = 0x0}}
        curtree = 0x0
#11 0x00007fffe8fa8cbf in _db_recurse_subtree (tp=0x618820, msp=0x7fffffffb440, pathp=0x619350, region_start_statepp=0x7fffffffb648, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:922
        memb_state = {magic = 1684173939, ts_dbip = 0x61f920, ts_sofar = 4, ts_regionid = 1000, ts_aircode = 0, ts_gmater = 1, ts_los = 100, ts_mater = {ma_color = {1, 1, 1}, ma_temperature = -1, ma_color_valid = 0 '\000', ma_cinherit = 0 '\000', ma_minherit = 0 '\000', ma_shader = 0x0}, ts_mat = {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, ts_is_fastgen = 0, ts_attrs = {magic = 1098273569, count = 4, max = 4, readonly_min = 0x0, readonly_max = 0x0, avp = 0x6190b0}, ts_stop_at_regions = 0, ts_region_start_func = 0x0, ts_region_end_func = 0x0, ts_leaf_func = 0x4014a0 <nmg_booltree_leaf_tess@plt>, ts_ttol = 0x605740 <ttol>, ts_tol = 0x605760 <tol>, ts_m = 0x605738 <the_model>, ts_rtip = 0x0, ts_resp = 0x7fffe96d4780 <rt_uniresource>}
        subtree = 0x7fffffffb1f8
#12 0x00007fffe8fa9a81 in db_recurse (tsp=0x619208, pathp=0x619350, region_start_statepp=0x7fffffffb648, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1084
        comb = 0x0
        nts = {magic = 1684173939, ts_dbip = 0x61f920, ts_sofar = 4, ts_regionid = 1000, ts_aircode = 0, ts_gmater = 1, ts_los = 100, ts_mater = {ma_color = {1, 1, 1}, ma_temperature = -1, ma_color_valid = 0 '\000', ma_cinherit = 0 '\000', ma_minherit = 0 '\000', ma_shader = 0x0}, ts_mat = {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1}, ts_is_fastgen = 0, ts_attrs = {magic = 1098273569, count = 4, max = 4, readonly_min = 0x0, readonly_max = 0x0, avp = 0x618890}, ts_stop_at_regions = 0, ts_region_start_func = 0x0, ts_region_end_func = 0x0, ts_leaf_func = 0x4014a0 <nmg_booltree_leaf_tess@plt>, ts_ttol = 0x605740 <ttol>, ts_tol = 0x605760 <tol>, ts_m = 0x605738 <the_model>, ts_rtip = 0x0, ts_resp = 0x7fffe96d4780 <rt_uniresource>}
        is_region = 1
        dp = 0x64b890
        intern = {idb_magic = 230414439, idb_major_type = -1, idb_minor_type = -1, idb_meth = 0x0, idb_ptr = 0x0, idb_avs = {magic = 1098273569, count = 0, max = 0, readonly_min = 0x0, readonly_max = 0x0, avp = 0x0}}
        curtree = 0x618820
#13 0x00007fffe8facbe6 in _db_walk_subtree (tp=0x617f10, region_start_statepp=0x7fffffffb648, leaf_func=0x4014a0 <nmg_booltree_leaf_tess@plt>, client_data=0x605290 <gcvwriter>, resp=0x7fffe96d4780 <rt_uniresource>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1896
        ctsp = 0x619200
        curtree = 0x7fffe96d4780 <rt_uniresource>
#14 0x00007fffe8fad0f1 in _db_walk_dispatcher (cpu=0, arg=0x7fffffffd870) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1988
        region_start_statep = 0x6188e0
        mine = 0
        curtree = 0x617f10
        wps = 0x7fffffffd870
        resp = 0x7fffe96d4780 <rt_uniresource>
#15 0x00007fffe843782f in bu_parallel (func=0x7fffe8facdba <_db_walk_dispatcher>, ncpu=1, arg=0x7fffffffd870) at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/parallel.c:553
        thread_context = 0x0
        thread_tbl = {0 <repeats 831 times>, 8, 18446603336221208081, 2, 0, 430997969, 1, 22, 140737353866424, 140737351927830, 0, 140737488343536, 140737101378248, 140737488343808, 140737101405440, 4115526907, 1, 22, 140737353866424, 140737351927830, 140737354110552, 140737488343616, 140737101378248, 140737488343888, 140737101488072, 64305107, 140737488343872, 140733193388049, 0, 0, 140737354110552, 140737101497450, 140737101494552, 140737101488072, 4294967296, 4294971872, 0, 140737488344072, 140737488344032, 0, 1, 140737354111408, 140737354110552, 140737351928209, 0, 0, 140733193388033, 0, 140733193388033, 140737354110552, 4294967296, 4294970332, 140737488343856, 140737488344200, 0, 140737354111408, 140737488343888, 140737488343872, 4115526907, 140737101497450, 4294967295, 0, 140733193388032, 140737354110552, 1, 140737354110552, 8, 29666682756, 0, 1901741336240346112, 140737488344000, 140737090196413, 140737488344064, 21479036320, 140737099000080, 1901741336240346112, 4294967296, 140737090111125, 140737106837121, 6393024, 140737090267012, 29928363351, 140733193388033, 1901741336240346112, 140737488344112, 140737090196413, 140737488344176, 21479036320, 140737099000080, 1901741336240346112, 140737488344176, 140737090111125, 140737090250466, 6393280, 140737090267012, 6392600, 6392600, 1901741336240346112, 140737488344240, 140737090031675, 140737488344304, 140737488344560, 140737488344528, 140737488344560, 140737488344560, 1901741336240346112, 140737488344304, 140737102158219, 140737099000088, 140737488344528, 140737488344528, 140737351925193, 140737109607904, 2760640552, 3, 22, 140737353866424, 140737351927830, 140737488345200, 140737488344400, 140737089986336, 140737488344672, 140737089990896, 43135008, 140737488344656, 140737488345200, 0, 0, 140737354102032, 140737101511091, 140737089999968, 140737101389816, 4294967296, 4294967486, 140737488344552, 140737488344856, 140737488344816, 0, 1, 140737354111408, 140737354110552, 140737351928209, 0, 0, 140733193388033, 0, 390842023937, 140737354110552, 0, 511101108334, 0, 140737488344639, 0, 140737354111408, 140737488344672, 140737488344656, 2760640552, 140737101511091, 4294967295, 0, 140737089990896, 140737354102032, 64, 25774003616, 140737488346064, 1901741336240346112, 140737488344768, 140737090196413, 140737488344824, 25769793272, 140737099000080, 1901741336240346112, 140737488344880, 140737109632472, 0, 140737488346064, 0, 0, 140737488345616, 140737351947607, 1, 0, 4294956880, 140737089990896, 0, 140737488345616, 4199840, 140737351976213, 140737102138810, 6394368, 140737488345200...}
        avail_cpus = 4
        x = 0
        i = 0
        nthreadc = 0
        nthreade = 0
        libbu_affinity = 0x0
        affinity = 0
        throttle = 0
        parent = 0x7fffe8ca37c0 <mapping>
        thread = 0
#16 0x00007fffe8fadd9f in db_walk_tree (dbip=0x61f920, argc=1, argv=0x7fffffffdbf8, ncpu=1, init_state=0x6057a0 <tree_state>, reg_start_func=0x0, reg_end_func=0x4012f0 <gcv_region_end@plt>, leaf_func=0x4014a0 <nmg_booltree_leaf_tess@plt>, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:2190
        whole_tree = 0x618820
        new_reg_count = 1
        i = 1
        something_not_found = 0
        reg_trees = 0x618c50
        wps = {magic = 1685549171, reg_trees = 0x618c50, reg_count = 1, reg_current = 1, reg_end_func = 0x4012f0 <gcv_region_end@plt>, reg_leaf_func = 0x4014a0 <nmg_booltree_leaf_tess@plt>, rtip = 0x0, client_data = 0x605290 <gcvwriter>}
        resp = 0x7fffe96d4780 <rt_uniresource>
#17 0x00000000004031f0 in main (argc=2, argv=0x7fffffffdbf0) at /home/nathan/Projects/brlcad-svn-trunk/src/conv/stl/g-stl.c:471
        c = -1
        percent = 2.0738010231669651e-317
        i = 0
        ret = 32767
        use_mc = 0
        mutex = 0
        missingg = 0


registers:
rax            0xfffffffffffffdfc	-516
rbx            0x7fffffffa1d0	140737488331216
rcx            0xffffffffffffffff	-1
rdx            0x0	0
rsi            0x7fffffffa1c0	140737488331200
rdi            0x7fffffffa1c0	140737488331200
rbp            0xffffffff	0xffffffff
rsp            0x7fffffffa1b8	0x7fffffffa1b8
r8             0x7fffffffa2d0	140737488331472
r9             0x1	1
r10            0x8	8
r11            0x246	582
r12            0x7fffffffa250	140737488331344
r13            0x7fffe8cad7e0	140737098995680
r14            0x6fcc	28620
r15            0x0	0
rip            0x7fffe7ef2ab0	0x7fffe7ef2ab0 <__nanosleep_nocancel+7>
eflags         0x246	[ PF ZF IF ]
cs             0x33	51
ss             0x2b	43
ds             0x0	0
es             0x0	0
fs             0x0	0
gs             0x0	0


current instructions:
=> 0x7fffe7ef2ab0 <__nanosleep_nocancel+7>:	cmp    $0xfffffffffffff001,%rax
   0x7fffe7ef2ab6 <__nanosleep_nocancel+13>:	jae    0x7fffe7ef2ae9 <nanosleep+73>
   0x7fffe7ef2ab8 <__nanosleep_nocancel+15>:	retq   
   0x7fffe7ef2ab9 <nanosleep+25>:	sub    $0x8,%rsp
   0x7fffe7ef2abd <nanosleep+29>:	callq  0x7fffe7f39d00 <__libc_enable_asynccancel>
   0x7fffe7ef2ac2 <nanosleep+34>:	mov    %rax,(%rsp)
   0x7fffe7ef2ac6 <nanosleep+38>:	mov    $0x23,%eax
   0x7fffe7ef2acb <nanosleep+43>:	syscall 
   0x7fffe7ef2acd <nanosleep+45>:	mov    (%rsp),%rdi
   0x7fffe7ef2ad1 <nanosleep+49>:	mov    %rax,%rdx
   0x7fffe7ef2ad4 <nanosleep+52>:	callq  0x7fffe7f39d60 <__libc_disable_asynccancel>
   0x7fffe7ef2ad9 <nanosleep+57>:	mov    %rdx,%rax
   0x7fffe7ef2adc <nanosleep+60>:	add    $0x8,%rsp
   0x7fffe7ef2ae0 <nanosleep+64>:	cmp    $0xfffffffffffff001,%rax
   0x7fffe7ef2ae6 <nanosleep+70>:	jae    0x7fffe7ef2ae9 <nanosleep+73>
   0x7fffe7ef2ae8 <nanosleep+72>:	retq   


threads backtrace:

Thread 1 (Thread 0x7ffff7fb9780 (LWP 28620)):
#0  0x00007fffe7ef2ab0 in __nanosleep_nocancel () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fffe7ef2964 in __sleep (seconds=0) at ../sysdeps/unix/sysv/linux/sleep.c:137
#2  0x00007fffe8422925 in bu_backtrace (fp=0x651f50) at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/backtrace.c:376
#3  0x00007fffe842a899 in bu_crashreport (filename=0x7fffe86690c0 <tracefile> "g-stl-28620-bomb.log") at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/crashreport.c:92
#4  0x00007fffe84256ef in bu_bomb (str=0x7fffffffa510 "ERROR: bad pointer 0x652340: s/b vertex(x123123), was Unknown_Magic(x6523f0), file /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_mod.c, line 1007\n") at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/bomb.c:164
#5  0x00007fffe8422b6a in bu_badmagic (ptr=0x652340, magic=1192227, str=0x7fffe946b709 "vertex", file=0x7fffe946b460 "/home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_mod.c", line=1007) at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/badmagic.c:49
#6  0x00007fffe927f6b5 in nmg_cmface (s=0x619780, verts=0x7fffffffaa60, n=3) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_mod.c:1007
#7  0x00007fffe930e34a in tesselate_pipe_linear (start_pt=0x7fffffffac40, orad=0.15625, irad=0, end_pt=0x7fffffffad80, end_orad=0.15625, end_irad=0, arc_segs=6, sin_del=0.8660254037844386, cos_del=0.50000000000000011, outer_loop=0x7fffffffab98, inner_loop=0x7fffffffaba0, r1=0x7fffffffacc0, r2=0x7ffffffface0, s=0x619780, tol=0x605760 <tol>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/pipe/pipe.c:2690
#8  0x00007fffe931b394 in rt_pipe_tess (r=0x7fffffffae28, m=0x618b50, ip=0x7fffffffaf80, ttol=0x605740 <ttol>, tol=0x605760 <tol>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/pipe/pipe.c:3864
#9  0x00007fffe91afb88 in nmg_booltree_leaf_tess (tsp=0x7fffffffb1c0, pathp=0x619350, ip=0x7fffffffaf80, UNUSED_client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/primitives/nmg/nmg_bool.c:1202
#10 0x00007fffe8faa171 in db_recurse (tsp=0x7fffffffb1c0, pathp=0x619350, region_start_statepp=0x7fffffffb648, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1162
#11 0x00007fffe8fa8cbf in _db_recurse_subtree (tp=0x618820, msp=0x7fffffffb440, pathp=0x619350, region_start_statepp=0x7fffffffb648, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:922
#12 0x00007fffe8fa9a81 in db_recurse (tsp=0x619208, pathp=0x619350, region_start_statepp=0x7fffffffb648, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1084
#13 0x00007fffe8facbe6 in _db_walk_subtree (tp=0x617f10, region_start_statepp=0x7fffffffb648, leaf_func=0x4014a0 <nmg_booltree_leaf_tess@plt>, client_data=0x605290 <gcvwriter>, resp=0x7fffe96d4780 <rt_uniresource>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1896
#14 0x00007fffe8fad0f1 in _db_walk_dispatcher (cpu=0, arg=0x7fffffffd870) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:1988
#15 0x00007fffe843782f in bu_parallel (func=0x7fffe8facdba <_db_walk_dispatcher>, ncpu=1, arg=0x7fffffffd870) at /home/nathan/Projects/brlcad-svn-trunk/src/libbu/parallel.c:553
#16 0x00007fffe8fadd9f in db_walk_tree (dbip=0x61f920, argc=1, argv=0x7fffffffdbf8, ncpu=1, init_state=0x6057a0 <tree_state>, reg_start_func=0x0, reg_end_func=0x4012f0 <gcv_region_end@plt>, leaf_func=0x4014a0 <nmg_booltree_leaf_tess@plt>, client_data=0x605290 <gcvwriter>) at /home/nathan/Projects/brlcad-svn-trunk/src/librt/db_tree.c:2190
#17 0x00000000004031f0 in main (argc=2, argv=0x7fffffffdbf0) at /home/nathan/Projects/brlcad-svn-trunk/src/conv/stl/g-stl.c:471