id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	field_blocks	field_dependson	field_seealso
218	Kernel panic on invalid phone hang-up	Lenka Trochtova		"The following code executed by a task causes the kernel to panic:     

{{{
   ipcarg_t phone = -1;
   ipc_hangup(phone);
}}}


The kconsole error message states:

  Kernel panic in _mutex_lock_timeout() at generic/src/synch/mutex.c:74: Assertion failed (mtx->type = MUTEX_ACTIVE), caller=0x8012fd86.
  cpu0: halted

The problem was observed on ia32 qemu machine, but it might be more generic. "	defect	closed	critical	0.4.3	helenos/kernel/generic	mainline	fixed	invalid phone kernel panic