qcad segfault

 27541 qcad     RET   kbind 0
 27541 qcad     CALL  kbind(0x7f7ffffc9828,24,0xcdad3311683c1435)
 27541 qcad     RET   kbind 0
 27541 qcad     CALL  kbind(0x7f7ffffc9688,24,0xcdad3311683c1435)
 27541 qcad     RET   kbind 0
 27541 qcad     CALL  sigprocmask(SIG_BLOCK,0<>)
 27541 qcad     RET   sigprocmask 0<>
 27541 qcad     CALL  kbind(0x7f7ffffc9648,24,0xcdad3311683c1435)
 27541 qcad     RET   kbind 0
 27541 qcad     CALL  kbind(0x7f7ffffc9608,24,0xcdad3311683c1435)
 27541 qcad     RET   kbind 0
 27541 qcad     CALL  getrlimit(RLIMIT_STACK,0x136b9a44e70)
 27541 qcad     STRU  struct rlimit { cur=4194304, max=33554432 }
 27541 qcad     RET   getrlimit 0
 27541 qcad     CALL  kbind(0x7f7ffffc9608,24,0xcdad3311683c1435)
 27541 qcad     RET   kbind 0
 27541 qcad     CALL  sysctl(2.3<vm.psstrings>,0x136b9a44e68,0x7f7ffffc96e0,0,0)
 27541 qcad     RET   sysctl 0
 27541 qcad     PSIG  SIGSEGV SIG_DFL code SEGV_MAPERR<1> addr=0xffffffffffffffc9 trapno=6
 27541 qcad     NAMI  "qcad.core"
 27541 qcad     STRU  struct kevent
 27541 qcad     STRU  struct pollfd { fd=3, events=0x1<POLLIN>, revents=0<> }