.
Thread 2 (Thread 0x7f25b6f16700 (LWP 14336)):
#0  0x00007f25bc096a06 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x7f25b7117078) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
        __ret = -512
        oldtype = 0
        err = <optimized out>
#1  do_futex_wait (sem=sem@entry=0x7f25b7117078, abstime=0x0) at sem_waitcommon.c:111
No locals.
#2  0x00007f25bc096ab4 in __new_sem_wait_slow (sem=0x7f25b7117078, abstime=0x0) at sem_waitcommon.c:181
        _buffer = {__routine = 0x7f25bc0969c0 <__sem_wait_cleanup>, __arg = 0x7f25b7117078, __canceltype = -1225695520, __prev = 0x0}
        err = <optimized out>
        d = 0
#3  0x00007f25bc096b5a in __new_sem_wait (sem=<optimized out>) at sem_wait.c:29
No locals.
#4  0x00007f25bc430726 in DebugModuleManager::mb_thread_func(void*) () from /tmp/apport_sandbox_aYbdJR/usr/lib/libffado.so.2
No symbol table info available.
#5  0x00007f25bc08e74a in start_thread (arg=0x7f25b6f16700) at pthread_create.c:456
        __res = <optimized out>
        pd = 0x7f25b6f16700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139799959791360, 4657436783896325141, 140720574690222, 140720574690223, 139799959792064, 139799959791360, -4689962490669667307, -4689951429784212459}, 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  0x00007f25bb73bcaf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
No locals.
.
Thread 1 (Thread 0x7f25bca23740 (LWP 14335)):
#0  __GI___libc_free (mem=0x401) at malloc.c:2966
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = 0x0
#1  0x000000f6ba13daf1 in ?? ()
No symbol table info available.
#2  0x00007f25bb653421 in __libc_start_main (main=0xf6ba13cd97, argc=1, argv=0x7ffc0fddf5f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc0fddf5e8) at ../csu/libc-start.c:291
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 4706259633241222165, 1059683812880, 140720574690800, 0, 0, -4658246282459321323, -4689939505236906987}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffc0fddf608, 0x7f25bca6d170}, data = {prev = 0x0, cleanup = 0x0, canceltype = 266204680}}}
        not_first_call = <optimized out>
#3  0x000000f6ba13c63a in ?? ()
No symbol table info available.