Pinta was crashed when I try edit linked picture file.

[Eran ERBEK]

When I try use any tool on linked picture file then pinta 1.6 was crashed.. On eny new emptey picture I do not experiance any problem...

resimag.com/p1/8b69a29e0c2.png

Operation system Ubuntu 18.04 Pinta version 1.6

Pinta crash output;

Pintabrush

free(): invalid pointer
Stacktrace:

  at <unknown> <0xffffffff>
  at (wrapper managed-to-native) GLib.SList.g_free (intptr) <0x0005f>
  at GLib.ListBase.Empty () <0x0013c>
  at GLib.ListBase.Dispose (bool) <0x0000f>
  at GLib.ListBase.Finalize () <0x0001d>
  at (wrapper runtime-invoke) object.runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr) <0x00068>

Native stacktrace:

 /usr/bin/mono(+0xc8514) [0x55ee35c10514]
 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x7f1bfae74890]
 /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7) [0x7f1bfa897e97]
 /lib/x86_64-linux-gnu/libc.so.6(abort+0x141) [0x7f1bfa899801]
 /lib/x86_64-linux-gnu/libc.so.6(+0x89897) [0x7f1bfa8e2897]
 /lib/x86_64-linux-gnu/libc.so.6(+0x9090a) [0x7f1bfa8e990a]
 /lib/x86_64-linux-gnu/libc.so.6(cfree+0x4cc) [0x7f1bfa8f0e1c]
 [0x41fbd460]

Debug info from gdb:

[New LWP 17998]
[New LWP 17999]
[New LWP 18000]
[New LWP 18001]
[New LWP 18017]
[New LWP 18018]
[New LWP 18019]
[New LWP 18020]
[New LWP 18021]
[New LWP 18022]
[New LWP 18023]
[New LWP 18024]
[New LWP 18025]
[New LWP 18026]
[New LWP 18047]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f1bfa96dbf9 in __GI___poll (fds=0x55ee37bd3db0, nfds=3, timeout=500) at ../sysdeps/unix/sysv/linux/poll.c:29
29 ../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
  Id Target Id Frame
* 1 Thread 0x7f1bfba2b780 (LWP 17997) "Main" 0x00007f1bfa96dbf9 in __GI___poll (fds=0x55ee37bd3db0, nfds=3, timeout=500) at ../sysdeps/unix/sysv/linux/poll.c:29
  2 Thread 0x7f1bf97ff700 (LWP 17998) "SGen worker" 0x00007f1bfae6f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ee36103a08) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
  3 Thread 0x7f1bf7434700 (LWP 17999) "Finalizer" 0x00007f1bfae7423a in __waitpid (pid=18089, stat_loc=0x7f1bf743286c, options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:30
  4 Thread 0x7f1be8dda700 (LWP 18000) "gmain" 0x00007f1bfa96dbf9 in __GI___poll (fds=0x55ee378fda80, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
  5 Thread 0x7f1be3fff700 (LWP 18001) "gdbus" 0x00007f1bfa96dbf9 in __GI___poll (fds=0x55ee37911ef0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
  6 Thread 0x7f1bdad44700 (LWP 18017) "Main" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bdad43cb0, expected=0, futex_word=0x55ee361046c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  7 Thread 0x7f1bdbd98700 (LWP 18018) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bdbd97cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  8 Thread 0x7f1bda4ca700 (LWP 18019) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bda4c9cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  9 Thread 0x7f1bd903f700 (LWP 18020) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd903ecc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  10 Thread 0x7f1bd8e3e700 (LWP 18021) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8e3dcc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  11 Thread 0x7f1bd8c3d700 (LWP 18022) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8c3ccc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  12 Thread 0x7f1bd8a3c700 (LWP 18023) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8a3bcc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  13 Thread 0x7f1bd883b700 (LWP 18024) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd883acc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  14 Thread 0x7f1bd863a700 (LWP 18025) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8639cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  15 Thread 0x7f1bd8439700 (LWP 18026) "Threadpool work" 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8438cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
  16 Thread 0x7f1babde2700 (LWP 18047) "pool" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

Thread 16 (Thread 0x7f1babde2700 (LWP 18047)):
#0 0x00007f1bfa974839 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007f1bf438f29a in g_cond_wait_until () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f1bf431c4f1 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f1bf431caac in g_async_queue_timeout_pop () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007f1bf4371bae in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f1bf4371105 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007f1bfae696db in start_thread (arg=0x7f1babde2700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f1bd8439700 (LWP 18026)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8438cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bd8438cc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bd8438cc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bd8439700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f1bd863a700 (LWP 18025)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8639cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bd8639cc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bd8639cc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bd863a700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f1bd883b700 (LWP 18024)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd883acc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bd883acc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bd883acc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bd883b700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f1bd8a3c700 (LWP 18023)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8a3bcc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bd8a3bcc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bd8a3bcc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bd8a3c700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f1bd8c3d700 (LWP 18022)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8c3ccc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bd8c3ccc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bd8c3ccc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bd8c3d700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f1bd8e3e700 (LWP 18021)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd8e3dcc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bd8e3dcc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bd8e3dcc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bd8e3e700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f1bd903f700 (LWP 18020)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bd903ecc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bd903ecc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bd903ecc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bd903f700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f1bda4ca700 (LWP 18019)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bda4c9cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bda4c9cc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bda4c9cc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bda4ca700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f1bdbd98700 (LWP 18018)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bdbd97cc0, expected=0, futex_word=0x55ee3841d9b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bdbd97cc0, mutex=0x55ee3841d9b8, cond=0x55ee3841d988) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee3841d988, mutex=0x55ee3841d9b8, abstime=0x7f1bdbd97cc0) at pthread_cond_wait.c:667
#3 0x000055ee35d10ed6 in ()
#4 0x000055ee35d0abe1 in ()
#5 0x000055ee35dca14a in ()
#6 0x00007f1bfae696db in start_thread (arg=0x7f1bdbd98700) at pthread_create.c:463
#7 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f1bdad44700 (LWP 18017)):
#0 0x00007f1bfae6ff85 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1bdad43cb0, expected=0, futex_word=0x55ee361046c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1 0x00007f1bfae6ff85 in __pthread_cond_wait_common (abstime=0x7f1bdad43cb0, mutex=0x55ee361046e0, cond=0x55ee361046a0) at pthread_cond_wait.c:539
#2 0x00007f1bfae6ff85 in __pthread_cond_timedwait (cond=0x55ee361046a0, mutex=0x55ee361046e0, abstime=0x7f1bdad43cb0) at pthread_cond_wait.c:667
#3 0x000055ee35dc8e7f in ()
#4 0x000055ee35d0fe0e in ()
#5 0x000055ee35d0abe1 in ()
#6 0x000055ee35dca14a in ()
#7 0x00007f1bfae696db in start_thread (arg=0x7f1bdad44700) at pthread_create.c:463
#8 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f1be3fff700 (LWP 18001)):
#0 0x00007f1bfa96dbf9 in __GI___poll (fds=0x55ee37911ef0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f1bf4349539 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f1bf43498d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f1bf4d99026 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4 0x00007f1bf4371105 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f1bfae696db in start_thread (arg=0x7f1be3fff700) at pthread_create.c:463
#6 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f1be8dda700 (LWP 18000)):
#0 0x00007f1bfa96dbf9 in __GI___poll (fds=0x55ee378fda80, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f1bf4349539 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f1bf434964c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f1bf4349691 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007f1bf4371105 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f1bfae696db in start_thread (arg=0x7f1be8dda700) at pthread_create.c:463
#6 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f1bf7434700 (LWP 17999)):
#0 0x00007f1bfae7423a in __waitpid (pid=18089, stat_loc=0x7f1bf743286c, options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:30
#1 0x000055ee35c105f0 in ()
#2 0x00007f1bfae74890 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0
#3 0x00007f1bfa897e97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#4 0x00007f1bfa899801 in __GI_abort () at abort.c:79
#5 0x00007f1bfa8e2897 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f1bfaa0fb9a "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#6 0x00007f1bfa8e990a in malloc_printerr (str=str@entry=0x7f1bfaa0dd88 "free(): invalid pointer") at malloc.c:5350
#7 0x00007f1bfa8f0e1c in _int_free (have_lock=0, p=0x55ee37d80eb0, av=0x7f1bfac44c40 <main_arena>) at malloc.c:4157
#8 0x00007f1bfa8f0e1c in __GI___libc_free (mem=0x55ee37d80ec0) at malloc.c:3124
#9 0x0000000041fbd460 in ()
#10 0x000055ee37d80ec0 in ()
#11 0x000055ee37571190 in ()
#12 0x000055ee37571190 in ()
#13 0x0000000000000000 in ()

Thread 2 (Thread 0x7f1bf97ff700 (LWP 17998)):
#0 0x00007f1bfae6f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ee36103a08) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1 0x00007f1bfae6f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55ee36103a20, cond=0x55ee361039e0) at pthread_cond_wait.c:502
#2 0x00007f1bfae6f9f3 in __pthread_cond_wait (cond=0x55ee361039e0, mutex=0x55ee36103a20) at pthread_cond_wait.c:655
#3 0x000055ee35d98863 in ()
#4 0x00007f1bfae696db in start_thread (arg=0x7f1bf97ff700) at pthread_create.c:463
#5 0x00007f1bfa97a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f1bfba2b780 (LWP 17997)):
#0 0x00007f1bfa96dbf9 in __GI___poll (fds=0x55ee37bd3db0, nfds=3, timeout=500) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f1bf4349539 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f1bf43498d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f1bf6503a37 in gtk_main () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#4 0x0000000041f9ad2a in ()
#5 0x00007ffcb117fd70 in ()
#6 0x00007ffcb117fd60 in ()
#7 0x00007f1bf9800950 in ()
#8 0x00007f1bf9800d60 in ()
#9 0x00007f1bf9800db0 in ()
#10 0x000055ee375a3560 in ()
#11 0x0000000041e7e6d0 in ()
#12 0x00007ffcb117f8f0 in ()
#13 0x00007ffcb117f7a0 in ()
#14 0x0000000041f9acbc in ()
#15 0x00007ffcb117f8f0 in ()
#16 0x0000000041e7e688 in ()
#17 0x00007f1bf98021f0 in ()
#18 0x00007f1bf9800788 in ()
#19 0x00007f1bf98021f0 in ()
#20 0x00007f1bfb924130 in ()
#21 0x00007f1bf9800788 in ()
#22 0x00007f1bf98021f0 in ()
#23 0x00007f1bfb920130 in ()
#24 0x00007f1bf9800788 in ()
#25 0x00007f1bf98021f0 in ()
#26 0x00007f1bfb918130 in ()
#27 0x00007f1bf9800400 in ()
#28 0x0000000000000000 in ()

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

#Text

free(): invalid pointer
Stacktrace:

  at <unknown> <0xffffffff>
  at (wrapper managed-to-native) GLib.SList.g_free (intptr) <0x0005f>
  at GLib.ListBase.Empty () <0x0013c>
  at GLib.ListBase.Dispose (bool) <0x0000f>
  at GLib.ListBase.Finalize () <0x0001d>
  at (wrapper runtime-invoke) object.runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr) <0x00068>

Native stacktrace:

 /usr/bin/mono(+0xc8514) [0x56482ef1a514]
 /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x7f2d4158f890]
 /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7) [0x7f2d40fb2e97]
 /lib/x86_64-linux-gnu/libc.so.6(abort+0x141) [0x7f2d40fb4801]
 /lib/x86_64-linux-gnu/libc.so.6(+0x89897) [0x7f2d40ffd897]
 /lib/x86_64-linux-gnu/libc.so.6(+0x9090a) [0x7f2d4100490a]
 /lib/x86_64-linux-gnu/libc.so.6(cfree+0x4cc) [0x7f2d4100be1c]
 [0x41e60b90]

Debug info from gdb:

[New LWP 19290]
[New LWP 19291]
[New LWP 19292]
[New LWP 19293]
[New LWP 19305]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f2d366fc08d in ?? () from /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
  Id Target Id Frame
* 1 Thread 0x7f2d42146780 (LWP 19289) "Main" 0x00007f2d366fc08d in ?? () from /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
  2 Thread 0x7f2d3ffff700 (LWP 19290) "SGen worker" 0x00007f2d4158a9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56482f40da08) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
  3 Thread 0x7f2d3dc34700 (LWP 19291) "Finalizer" 0x00007f2d4158f23a in __waitpid (pid=19327, stat_loc=0x7f2d3dc3286c, options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:30
  4 Thread 0x7f2d2f4da700 (LWP 19292) "gmain" 0x00007f2d41088bf9 in __GI___poll (fds=0x5648310f0550, nfds=2, timeout=3468) at ../sysdeps/unix/sysv/linux/poll.c:29
  5 Thread 0x7f2d2ecd9700 (LWP 19293) "gdbus" 0x00007f2d41088bf9 in __GI___poll (fds=0x5648311045f0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
  6 Thread 0x7f2d26456700 (LWP 19305) "pool" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

Thread 6 (Thread 0x7f2d26456700 (LWP 19305)):
#0 0x00007f2d4108f839 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007f2d369b929a in g_cond_wait_until () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f2d369464f1 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f2d36946aac in g_async_queue_timeout_pop () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007f2d3699bbae in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f2d3699b105 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007f2d415846db in start_thread (arg=0x7f2d26456700) at pthread_create.c:463
#7 0x00007f2d4109588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f2d2ecd9700 (LWP 19293)):
#0 0x00007f2d41088bf9 in __GI___poll (fds=0x5648311045f0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f2d36973539 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f2d369738d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f2d373c3026 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4 0x00007f2d3699b105 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f2d415846db in start_thread (arg=0x7f2d2ecd9700) at pthread_create.c:463
#6 0x00007f2d4109588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f2d2f4da700 (LWP 19292)):
#0 0x00007f2d41088bf9 in __GI___poll (fds=0x5648310f0550, nfds=2, timeout=3468) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f2d36973539 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007f2d3697364c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f2d36973691 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007f2d3699b105 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f2d415846db in start_thread (arg=0x7f2d2f4da700) at pthread_create.c:463
#6 0x00007f2d4109588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2d3dc34700 (LWP 19291)):
#0 0x00007f2d4158f23a in __waitpid (pid=19327, stat_loc=0x7f2d3dc3286c, options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:30
#1 0x000056482ef1a5f0 in ()
#2 0x00007f2d4158f890 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0
#3 0x00007f2d40fb2e97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#4 0x00007f2d40fb4801 in __GI_abort () at abort.c:79
#5 0x00007f2d40ffd897 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f2d4112ab9a "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#6 0x00007f2d4100490a in malloc_printerr (str=str@entry=0x7f2d41128d88 "free(): invalid pointer") at malloc.c:5350
#7 0x00007f2d4100be1c in _int_free (have_lock=0, p=0x564831625560, av=0x7f2d4135fc40 <main_arena>) at malloc.c:4157
#8 0x00007f2d4100be1c in __GI___libc_free (mem=0x564831625570) at malloc.c:3124
#9 0x0000000041e60b90 in ()
#10 0x0000564831625570 in ()
#11 0x0000564830d65190 in ()
#12 0x0000564830d65190 in ()
#13 0x0000000000000000 in ()

Thread 2 (Thread 0x7f2d3ffff700 (LWP 19290)):
#0 0x00007f2d4158a9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56482f40da08) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1 0x00007f2d4158a9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56482f40da20, cond=0x56482f40d9e0) at pthread_cond_wait.c:502
#2 0x00007f2d4158a9f3 in __pthread_cond_wait (cond=0x56482f40d9e0, mutex=0x56482f40da20) at pthread_cond_wait.c:655
#3 0x000056482f0a2863 in ()
#4 0x00007f2d415846db in start_thread (arg=0x7f2d3ffff700) at pthread_create.c:463
#5 0x00007f2d4109588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2d42146780 (LWP 19289)):
#0 0x00007f2d366fc08d in () at /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
#1 0x00007f2d366fc1f3 in () at /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
#2 0x00007f2d366fc51c in () at /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
#3 0x00007f2d366fc640 in () at /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
#4 0x00007f2d366fd191 in FcFontMatch () at /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
#5 0x00007f2d370e8c56 in () at /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0
#6 0x00007f2d370e8e0d in () at /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0
#7 0x00007f2d36ea879e in () at /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#8 0x00007f2d36ea8e16 in () at /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#9 0x00007f2d36eaa0c0 in pango_itemize_with_base_dir () at /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#10 0x00007f2d36eb274d in () at /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#11 0x00007f2d36eb45b5 in () at /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#12 0x00007f2d36eb4b01 in pango_layout_get_pixel_extents () at /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
#13 0x00007f2d3cba9365 in () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#14 0x00007f2d3cba96d7 in () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#15 0x00007f2d3cbabd7a in () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#16 0x00007f2d36c4d10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007f2d36c6012e in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007f2d36c68715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007f2d36c69608 in g_signal_emit_by_name () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007f2d3ccaa408 in () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#21 0x00007f2d3cbb7c22 in () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#22 0x00007f2d3cbb801e in () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#23 0x00007f2d3cbbc5ef in gtk_combo_box_set_model () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#24 0x0000000041e32a96 in ()
#25 0x00007f2d403eb8e0 in ()
#26 0x000000000000008f in ()
#27 0x00007f2d403ec460 in ()
#28 0x000056483159f260 in ()
#29 0x0000564831ac2820 in ()
#30 0x00007ffd49637608 in ()
#31 0x00007f2d403f5ad0 in ()
#32 0x00007f2d403e99b8 in ()
#33 0x00007ffd49636c90 in ()
#34 0x0000000041e32a08 in ()
#35 0x00007f2d402b7028 in ()
#36 0x00007f2d403ec460 in ()
#37 0x00007f2d403f5488 in ()
#38 0x0000000041d638d0 in ()
#39 0x00007f2d402b8330 in ()
#40 0x00007ffd49637030 in ()
#41 0x00007f2d402b7028 in ()
#42 0x00007f2d403e9590 in ()
#43 0x00007f2d400c8fa0 in ()
#44 0x00005648c8b0df08 in ()
#45 0x0000564831c530c0 in ()
#46 0x00007f2d369a7d10 in g_nullify_pointer () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x0000564831c180b0 in ()
#48 0x0000000000000096 in ()
#49 0x0000000000000005 in ()
#50 0x0000000000000000 in ()

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted (core dumped)