@@ -455,6 +468,14 @@ static int umh_pipe_setup(struct subproc
/* and disallow core files too */
current->signal->rlim[RLIMIT_CORE] = (struct rlimit){1, 1};
+
+ if (cp->switch_ns) {
+ get_fs_root(cp->cprocess->fs, &root);
+ set_fs_root(current->fs, &root);
+ switch_task_namespaces(current, cp->cprocess->nsproxy);
How? You can't simply change ->nsproxy this way.
If nothing else this breaks sys_getpid(), no?
And a lot more problems, afaics. For example, this thread can continue
to run after, say, this cprocess->nsproxy->pid_ns was already destroyed.
zap_pid_ns_processes() obviously won't see this thread.
Even ->nsproxy itself can go away. Just suppose that the coredumping
task is the only process in this namespace (sub-init).
Oleg.
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