Program received signal SIGSEGV, Segmentation fault.

0x000632e3 in l4_ipc_call (timeout=..., snd_tag=<optimized out>, dest=<optimized out>, u=<optimized out>) at /home/ivan/projects/genode/genode-ksyslabs-staging/_build.foc_x86_32/include/x86/l4f/l4/sys/ipc-l42-gcc3-nopic.h:54

54 );

(gdb) bt

#0 0x000632e3 in l4_ipc_call (timeout=..., snd_tag=<optimized out>, dest=<optimized out>, u=<optimized out>) at /home/ivan/projects/genode/genode-ksyslabs-staging/_build.foc_x86_32/include/x86/l4f/l4/sys/ipc-l42-gcc3-nopic.h:54

#1 l4_irq_receive_u (utcb=<optimized out>, to=<optimized out>, irq=<optimized out>) at /home/ivan/projects/genode/genode-ksyslabs-staging/_build.foc_x86_32/include/l4/sys/irq.h:254

#2 l4_irq_receive (to=<optimized out>, irq=<optimized out>) at /home/ivan/projects/genode/genode-ksyslabs-staging/_build.foc_x86_32/include/l4/sys/irq.h:303

#3 thread_stop_myself () at /home/ivan/projects/genode/genode-ksyslabs-staging/base-foc/src/base/lock/lock_helper.h:105

#4 Genode::Cancelable_lock::lock (this=0x11b6648) at /home/ivan/projects/genode/genode-ksyslabs-staging/base/src/base/lock/lock.cc:100

#5 0x011b65d8 in _stack_low ()

#6 0x011b6648 in _stack_low ()

#7 0x01096ba2 in Genode::Lock::lock (this=0x11b6614) at /home/ivan/projects/genode/genode-ksyslabs-staging/base/include/base/lock.h:35

#8 0x01096fa4 in block (this=0x11b6614) at /home/ivan/projects/genode/genode-ksyslabs-staging/base/include/base/semaphore.h:46

#9 down (this=0x11b65d4) at /home/ivan/projects/genode/genode-ksyslabs-staging/base/include/base/semaphore.h:155

#10 main (argc=18572648, argv=0x0) at /home/ivan/projects/genode/genode-ksyslabs-staging/qt4/src/lib/qt_main/qt_main.cc:70