smp_rmb();
if (task->mm)
dumpable = get_dumpable(task->mm);
- if (!dumpable && !ptrace_has_cap(task_user_ns(task), mode))
+ rcu_read_lock();
+ if (!dumpable && !ptrace_has_cap(__task_cred(task)->user_ns, mode)) {
+ rcu_read_unlock();
return -EPERM;
+ }
+ rcu_read_unlock();
return security_ptrace_access_check(task, mode);
}
if (seize)
flags |= PT_SEIZED;
- if (ns_capable(task_user_ns(task), CAP_SYS_PTRACE))
+ rcu_read_lock();
+ if (ns_capable(__task_cred(task)->user_ns, CAP_SYS_PTRACE))
flags |= PT_PTRACE_CAP;
+ rcu_read_unlock();
task->ptrace = flags;
__ptrace_link(task, current);
return;
list_for_each_entry_safe(p, n, &tracer->ptraced, ptrace_entry) {
+ if (unlikely(p->ptrace & PT_EXITKILL))
+ send_sig_info(SIGKILL, SEND_SIG_FORCED, p);
+
if (__ptrace_detach(tracer, p))
list_add(&p->ptrace_entry, &ptrace_dead);
}