child->thread.work.syscall_trace = 0; 
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); 
void ptrace_disable(struct task_struct *child){	singlestep_disable(child);	child->thread.work.syscall_trace = 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/3b66a1edb01b82269a668a478625765b1fa4936f/ptrace.c/buggy/arch/m68k/kernel/ptrace.c