42 int ptrace_access_vm(struct task_struct *tsk, unsigned long addr,  in ptrace_access_vm()  argument
48 	mm = get_task_mm(tsk);  in ptrace_access_vm()
52 	if (!tsk->ptrace ||  in ptrace_access_vm()
53 	    (current != tsk->parent) ||  in ptrace_access_vm()
55 	     !ptracer_capable(tsk, mm->user_ns))) {  in ptrace_access_vm()
60 	ret = __access_remote_vm(tsk, mm, addr, buf, len, gup_flags);  in ptrace_access_vm()
593 int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len)  in ptrace_readdata()  argument
602 		retval = ptrace_access_vm(tsk, src, buf, this_len, FOLL_FORCE);  in ptrace_readdata()
619 int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len)  in ptrace_writedata()  argument
630 		retval = ptrace_access_vm(tsk, dst, buf, this_len,  in ptrace_writedata()
1287 int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr,  in generic_ptrace_peekdata()  argument
1293 	copied = ptrace_access_vm(tsk, addr, &tmp, sizeof(tmp), FOLL_FORCE);  in generic_ptrace_peekdata()
1299 int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr,  in generic_ptrace_pokedata()  argument
1304 	copied = ptrace_access_vm(tsk, addr, &data, sizeof(data),  in generic_ptrace_pokedata()