namespaces, pid_ns: fix leakage on fork() failure

[firefly-linux-kernel-4.4.55.git] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index a4e453b14f7076cfbf5dd9c736cf8bccd921b440..4712e3e5578e17544552d49f91e3960358a44a72 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -48,6 +48,7 @@
 #include <linux/audit.h>
 #include <linux/memcontrol.h>
 #include <linux/ftrace.h>
+#include <linux/proc_fs.h>
 #include <linux/profile.h>
 #include <linux/rmap.h>
 #include <linux/ksm.h>
@@ -1378,6 +1379,8 @@ bad_fork_cleanup_io:
        if (p->io_context)
                exit_io_context(p);
 bad_fork_cleanup_namespaces:
+       if (unlikely(clone_flags & CLONE_NEWPID))
+               pid_ns_release_proc(p->nsproxy->pid_ns);
        exit_task_namespaces(p);
 bad_fork_cleanup_mm:
        if (p->mm) {