this is darktable 3.4.0 reporting a segfault:

warning: Currently logging to /tmp/darktable_bt_UTSIW0.txt.  Turn the logging off and on to make the new setting effective.
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
#1  0x00007f2104002916 in __syscall_cp_c (nr=0x3d, u=0x538, v=0x0, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
#2  0x00007f2103fe7b62 in waitpid (pid=<optimized out>, status=<optimized out>, options=<optimized out>) at src/process/waitpid.c:6
#3  0x00007f2103c86720 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
#4  <signal handler called>
#5  strcmp (l=l@entry=0x0, r=0x7f20fe2adfcf "frequential, Lab") at src/string/strcmp.c:5
#6  0x00007f2103fbbcd1 in __mo_lookup (p=0x7f20fe28b000, size=0x58606, s=s@entry=0x0) at src/locale/__mo_lookup.c:25
#7  0x00007f2103fbc5e2 in dcngettext (domainname=<optimized out>, msgid1=0x0, msgid2=0x0, n=0x1, category=0x5) at src/locale/dcngettext.c:238
#8  0x00007f2103bb0c54 in dt_bauhaus_widget_set_label () from /usr/bin/../lib64/darktable/libdarktable.so
#9  0x00007f20fa749d7b in gui_init () from /usr/lib/darktable/plugins/imageio/format/libtiff.so
#10 0x00007f2103c3b696 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
#11 0x00007f2103c3c140 in dt_imageio_init () from /usr/bin/../lib64/darktable/libdarktable.so
#12 0x00007f2103bda756 in dt_init () from /usr/bin/../lib64/darktable/libdarktable.so
#13 0x000055e32de77098 in ?? ()
#14 0x00007f2103fb68fa in libc_start_main_stage2 (main=0x55e32de77080, argc=0x1, argv=0x7ffd02a107b8) at src/env/__libc_start_main.c:94
#15 0x000055e32de770cf in ?? ()
#16 0x0000000000000001 in ?? ()
#17 0x00007ffd02a11487 in ?? ()
#18 0x0000000000000000 in ?? ()

=========

  Id   Target Id                Frame 
* 1    LWP 1321 "darktable"     __cp_end () at src/thread/x86_64/syscall_cp.s:29
  2    LWP 1322 "gmain"         __cp_end () at src/thread/x86_64/syscall_cp.s:29
  3    LWP 1323 "pool"          0x00007f2103fd9bda in __syscall6 (a6=<optimized out>, a5=<optimized out>, a4=<optimized out>, a3=<optimized out>, a2=<optimized out>, a1=<optimized out>, n=0xca) at ./arch/x86_64/syscall_arch.h:59
  4    LWP 1324 "gdbus"         __cp_end () at src/thread/x86_64/syscall_cp.s:29
  5    LWP 1325 "worker 0"      __cp_end () at src/thread/x86_64/syscall_cp.s:29
  6    LWP 1326 "worker 1"      __cp_end () at src/thread/x86_64/syscall_cp.s:29
  7    LWP 1327 "worker 2"      __cp_end () at src/thread/x86_64/syscall_cp.s:29
  8    LWP 1328 "worker 3"      __cp_end () at src/thread/x86_64/syscall_cp.s:29
  9    LWP 1329 "worker 4"      __cp_end () at src/thread/x86_64/syscall_cp.s:29
  10   LWP 1330 "worker 5"      __cp_end () at src/thread/x86_64/syscall_cp.s:29
  11   LWP 1331 "kicker"        __cp_end () at src/thread/x86_64/syscall_cp.s:29
  12   LWP 1332 "worker res 0"  __syscall_cp_c (nr=0xca, u=0x7f20fcbb4ac4, v=0x80, w=0x2, x=0x0, y=0x0, z=0x0) at ./arch/x86_64/syscall_arch.h:61
  13   LWP 1333 "worker res 1"  __syscall_cp_c (nr=0xca, u=0x7f20fc99fac4, v=0x80, w=0x2, x=0x0, y=0x0, z=0x0) at ./arch/x86_64/syscall_arch.h:61
  14   LWP 1334 "worker res 2"  __syscall_cp_c (nr=0xca, u=0x7f20fc78aac4, v=0x80, w=0x2, x=0x0, y=0x0, z=0x0) at ./arch/x86_64/syscall_arch.h:61
  15   LWP 1335 "gphoto_update" __cp_end () at src/thread/x86_64/syscall_cp.s:29

=========

Thread 15 (LWP 1335 "gphoto_update"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0x23, u=0x7f20fc575b10, v=0x7f20fc575b00, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fc587b20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f210400816e in __clock_nanosleep (clk=0x0, flags=0x0, rem=0x0, req=0x0) at src/time/clock_nanosleep.c:33
No locals.
#3  __clock_nanosleep (clk=clk@entry=0x0, flags=flags@entry=0x0, req=<optimized out>, rem=<optimized out>) at src/time/clock_nanosleep.c:8
No locals.
#4  0x00007f2104008693 in nanosleep (req=<optimized out>, rem=<optimized out>) at src/time/nanosleep.c:6
No locals.
#5  0x00007f2103a0a03f in g_usleep () from /lib/libglib-2.0.so.0
No symbol table info available.
#6  0x00007f2103e211fa in dt_update_cameras_thread () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#7  0x00007f2104003915 in start (p=0x7f20fc575be0) at src/thread/pthread_create.c:196
        args = 0x7f20fc575be0
        state = <optimized out>
#8  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 14 (LWP 1334 "worker res 2"):
#0  __syscall_cp_c (nr=0xca, u=0x7f20fc78aac4, v=0x80, w=0x2, x=0x0, y=0x0, z=0x0) at ./arch/x86_64/syscall_arch.h:61
        self = 0x7f20fc79cb20
        r = <optimized out>
        st = <optimized out>
#1  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fc78aac4) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#2  __timedwait_cp (addr=addr@entry=0x7f20fc78aac4, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#3  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x0,
          next = 0x7f20fcbb4ab0,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x1
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fc78aac4
        relock = <optimized out>
#4  0x00007f2103c9d49c in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#5  0x00007f2104003915 in start (p=0x7f20fc78abe0) at src/thread/pthread_create.c:196
        args = 0x7f20fc78abe0
        state = <optimized out>
#6  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 13 (LWP 1333 "worker res 1"):
#0  __syscall_cp_c (nr=0xca, u=0x7f20fc99fac4, v=0x80, w=0x2, x=0x0, y=0x0, z=0x0) at ./arch/x86_64/syscall_arch.h:61
        self = 0x7f20fc9b1b20
        r = <optimized out>
        st = <optimized out>
#1  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fc99fac4) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#2  __timedwait_cp (addr=addr@entry=0x7f20fc99fac4, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#3  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fcbb4ab0,
          next = 0x7f20fcfdeb00,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x1
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fc99fac4
        relock = <optimized out>
#4  0x00007f2103c9d49c in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#5  0x00007f2104003915 in start (p=0x7f20fc99fbe0) at src/thread/pthread_create.c:196
        args = 0x7f20fc99fbe0
        state = <optimized out>
#6  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 12 (LWP 1332 "worker res 0"):
#0  __syscall_cp_c (nr=0xca, u=0x7f20fcbb4ac4, v=0x80, w=0x2, x=0x0, y=0x0, z=0x0) at ./arch/x86_64/syscall_arch.h:61
        self = 0x7f20fcbc6b20
        r = <optimized out>
        st = <optimized out>
#1  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fcbb4ac4) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#2  __timedwait_cp (addr=addr@entry=0x7f20fcbb4ac4, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x55e32f109bf8,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#3  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fc78aab0,
          next = 0x7f20fc99fab0,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x1
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fcbb4ac4
        relock = <optimized out>
#4  0x00007f2103c9d49c in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#5  0x00007f2104003915 in start (p=0x7f20fcbb4be0) at src/thread/pthread_create.c:196
        args = 0x7f20fcbb4be0
        state = <optimized out>
#6  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 11 (LWP 1331 "kicker"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0x23, u=0x7f20fcdc9b70, v=0x7f20fcdc9b70, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fcddbb20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f210400816e in __clock_nanosleep (clk=0x0, flags=0x0, rem=0x0, req=0x0) at src/time/clock_nanosleep.c:33
No locals.
#3  __clock_nanosleep (clk=clk@entry=0x0, flags=flags@entry=0x0, req=req@entry=0x7f20fcdc9b70, rem=rem@entry=0x7f20fcdc9b70) at src/time/clock_nanosleep.c:8
No locals.
#4  0x00007f2104008693 in nanosleep (req=req@entry=0x7f20fcdc9b70, rem=rem@entry=0x7f20fcdc9b70) at src/time/nanosleep.c:6
No locals.
#5  0x00007f210400b41e in sleep (seconds=<optimized out>) at src/unistd/sleep.c:7
        tv = {
          tv_sec = 0x0,
          tv_nsec = 0x2474c0ae
        }
#6  0x00007f2103c9d07a in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#7  0x00007f2104003915 in start (p=0x7f20fcdc9be0) at src/thread/pthread_create.c:196
        args = 0x7f20fcdc9be0
        state = <optimized out>
#8  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 10 (LWP 1330 "worker 5"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0xca, u=0x7f20fcfdeb14, v=0x80, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fcff0b20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fcfdeb14) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#3  __timedwait_cp (addr=addr@entry=0x7f20fcfdeb14, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#4  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fc99fab0,
          next = 0x7f20fd1f3b00,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x0
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fcfdeb14
        relock = <optimized out>
#5  0x00007f2103c9e716 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#6  0x00007f2104003915 in start (p=0x7f20fcfdebe0) at src/thread/pthread_create.c:196
        args = 0x7f20fcfdebe0
        state = <optimized out>
#7  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 9 (LWP 1329 "worker 4"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0xca, u=0x7f20fd1f3b14, v=0x80, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fd205b20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fd1f3b14) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#3  __timedwait_cp (addr=addr@entry=0x7f20fd1f3b14, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#4  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fcfdeb00,
          next = 0x7f20fd408b00,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x0
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fd1f3b14
        relock = <optimized out>
#5  0x00007f2103c9e716 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#6  0x00007f2104003915 in start (p=0x7f20fd1f3be0) at src/thread/pthread_create.c:196
        args = 0x7f20fd1f3be0
        state = <optimized out>
#7  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 8 (LWP 1328 "worker 3"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0xca, u=0x7f20fd408b14, v=0x80, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fd41ab20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fd408b14) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#3  __timedwait_cp (addr=addr@entry=0x7f20fd408b14, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#4  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fd1f3b00,
          next = 0x7f20fd61db00,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x0
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fd408b14
        relock = <optimized out>
#5  0x00007f2103c9e716 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#6  0x00007f2104003915 in start (p=0x7f20fd408be0) at src/thread/pthread_create.c:196
        args = 0x7f20fd408be0
        state = <optimized out>
#7  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 7 (LWP 1327 "worker 2"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0xca, u=0x7f20fd61db14, v=0x80, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fd62fb20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fd61db14) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#3  __timedwait_cp (addr=addr@entry=0x7f20fd61db14, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x55e32f109bd0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#4  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fd408b00,
          next = 0x7f20fd832b00,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x0
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fd61db14
        relock = <optimized out>
#5  0x00007f2103c9e716 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#6  0x00007f2104003915 in start (p=0x7f20fd61dbe0) at src/thread/pthread_create.c:196
        args = 0x7f20fd61dbe0
        state = <optimized out>
#7  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 6 (LWP 1326 "worker 1"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0xca, u=0x7f20fd832b14, v=0x80, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fd844b20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fd832b14) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#3  __timedwait_cp (addr=addr@entry=0x7f20fd832b14, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#4  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fd61db00,
          next = 0x7f20fda47b00,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x0
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fd832b14
        relock = <optimized out>
#5  0x00007f2103c9e716 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#6  0x00007f2104003915 in start (p=0x7f20fd832be0) at src/thread/pthread_create.c:196
        args = 0x7f20fd832be0
        state = <optimized out>
#7  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 5 (LWP 1325 "worker 0"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0xca, u=0x7f20fda47b14, v=0x80, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fda59b20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2104001bd7 in __futex4_cp (to=<optimized out>, val=0x2, op=0x80, addr=0x7f20fda47b14) at src/thread/__timedwait.c:24
        r = <optimized out>
        r = <optimized out>
#3  __timedwait_cp (addr=addr@entry=0x7f20fda47b14, val=val@entry=0x2, clk=clk@entry=0x0, at=at@entry=0x0, priv=0x80, priv@entry=0x1) at src/thread/__timedwait.c:52
        r = <optimized out>
        to = {
          tv_sec = 0x55e32f109ae0,
          tv_nsec = 0x7f2103ff787f
        }
        top = <optimized out>
#4  0x00007f2104002d71 in __pthread_cond_timedwait (c=0x7f20fe4ff658, m=0x7f20fe4ff608, ts=0x0) at src/thread/pthread_cond_timedwait.c:100
        node = {
          prev = 0x7f20fd832b00,
          next = 0x0,
          state = 0x0,
          barrier = 0x2,
          notify = 0x0
        }
        e = <optimized out>
        seq = 0x2
        clock = <optimized out>
        cs = 0x0
        shared = 0x0
        oldstate = <optimized out>
        tmp = <optimized out>
        fut = 0x7f20fda47b14
        relock = <optimized out>
#5  0x00007f2103c9e716 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#6  0x00007f2104003915 in start (p=0x7f20fda47be0) at src/thread/pthread_create.c:196
        args = 0x7f20fda47be0
        state = <optimized out>
#7  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 4 (LWP 1324 "gdbus"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0x7, u=0x7f20fada15f0, v=0x3, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fe049b20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2103ff153f in poll (fds=<optimized out>, n=<optimized out>, timeout=<optimized out>) at src/select/poll.c:9
No locals.
#3  0x00007f2103a3c5be in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f2103a3d793 in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f2102e15ac6 in ?? () from /lib/libgio-2.0.so.0
No symbol table info available.
#6  0x00007f2103a119ed in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#7  0x00007f2104003915 in start (p=0x7f20fe037be0) at src/thread/pthread_create.c:196
        args = 0x7f20fe037be0
        state = <optimized out>
#8  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 3 (LWP 1323 "pool"):
#0  0x00007f2103fd9bda in __syscall6 (a6=<optimized out>, a5=<optimized out>, a4=<optimized out>, a3=<optimized out>, a2=<optimized out>, a1=<optimized out>, n=0xca) at ./arch/x86_64/syscall_arch.h:59
        ret = <optimized out>
        r10 = 0x7f20fe250ad0
        r8 = 0x36912
        r9 = 0x36912
        ret = <optimized out>
        r10 = <optimized out>
        r8 = <optimized out>
        r9 = <optimized out>
#1  syscall (n=0xca) at src/misc/syscall.c:20
        ap = {{
            gp_offset = 0x8,
            fp_offset = 0x7f21,
            overflow_arg_area = 0x7f20fe250ac0,
            reg_save_area = 0x7f20fe250a80
          }}
        a = 0x7f20ff324da0
        b = 0x80
        c = 0x0
        d = <optimized out>
        e = <optimized out>
        f = <optimized out>
#2  0x00007f21039e83a8 in g_cond_wait_until () from /lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f2103a680f1 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f2103a682c2 in g_async_queue_timeout_pop () from /lib/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f2103a0d1f9 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#6  0x00007f2103a119ed in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#7  0x00007f2104003915 in start (p=0x7f20fe250be0) at src/thread/pthread_create.c:196
        args = 0x7f20fe250be0
        state = <optimized out>
#8  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 2 (LWP 1322 "gmain"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0x7, u=0x7f20ff1f1ef0, v=0x1, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fe4f8b20
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2103ff153f in poll (fds=<optimized out>, n=<optimized out>, timeout=<optimized out>) at src/select/poll.c:9
No locals.
#3  0x00007f2103a3c5be in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f2103a3c68f in g_main_context_iteration () from /lib/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f2103a3c6e1 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#6  0x00007f2103a119ed in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#7  0x00007f2104003915 in start (p=0x7f20fe4e6be0) at src/thread/pthread_create.c:196
        args = 0x7f20fe4e6be0
        state = <optimized out>
#8  0x00007f21040111f0 in __clone () at src/thread/x86_64/clone.s:22
No locals.
Backtrace stopped: frame did not save the PC

Thread 1 (LWP 1321 "darktable"):
#0  __cp_end () at src/thread/x86_64/syscall_cp.s:29
No locals.
#1  0x00007f2104002916 in __syscall_cp_c (nr=0x3d, u=0x538, v=0x0, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0x0) at src/thread/pthread_cancel.c:33
        self = 0x7f20fe549f80
        r = <optimized out>
        st = <optimized out>
#2  0x00007f2103fe7b62 in waitpid (pid=<optimized out>, status=<optimized out>, options=<optimized out>) at src/process/waitpid.c:6
No locals.
#3  0x00007f2103c86720 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#4  <signal handler called>
No locals.
#5  strcmp (l=l@entry=0x0, r=0x7f20fe2adfcf "frequential, Lab") at src/string/strcmp.c:5
No locals.
#6  0x00007f2103fbbcd1 in __mo_lookup (p=0x7f20fe28b000, size=0x58606, s=s@entry=0x0) at src/locale/__mo_lookup.c:25
        ol = <optimized out>
        os = <optimized out>
        sign = <optimized out>
        mo = 0x7f20fe28b000
        sw = <optimized out>
        b = 0x0
        n = 0xe87
        o = 0x7
        t = 0x1d15
#7  0x00007f2103fbc5e2 in dcngettext (domainname=<optimized out>, msgid1=0x0, msgid2=0x0, n=0x1, category=0x5) at src/locale/dcngettext.c:238
        cats = 0x7f20fad25780
        p = 0x7f20fef50ce0
        loc = <optimized out>
        lm = 0x7f20fec24fa0
        domlen = <optimized out>
        q = <optimized out>
        old_errno = 0x0
        trans = <optimized out>
#8  0x00007f2103bb0c54 in dt_bauhaus_widget_set_label () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#9  0x00007f20fa749d7b in gui_init () from /usr/lib/darktable/plugins/imageio/format/libtiff.so
No symbol table info available.
#10 0x00007f2103c3b696 in ?? () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#11 0x00007f2103c3c140 in dt_imageio_init () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#12 0x00007f2103bda756 in dt_init () from /usr/bin/../lib64/darktable/libdarktable.so
No symbol table info available.
#13 0x000055e32de77098 in ?? ()
No symbol table info available.
#14 0x00007f2103fb68fa in libc_start_main_stage2 (main=0x55e32de77080, argc=0x1, argv=0x7ffd02a107b8) at src/env/__libc_start_main.c:94
        envp = 0x7ffd02a107c8
#15 0x000055e32de770cf in ?? ()
No symbol table info available.
#16 0x0000000000000001 in ?? ()
No symbol table info available.
#17 0x00007ffd02a11487 in ?? ()
No symbol table info available.
#18 0x0000000000000000 in ?? ()
No symbol table info available.
[Inferior 1 (process 1321) detached]