Fixes for 4.19

Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/queue-4.19/cgroup-add-missing-skcd-no_refcnt-check-in-cgroup_sk.patch b/queue-4.19/cgroup-add-missing-skcd-no_refcnt-check-in-cgroup_sk.patch
new file mode 100644 (file)
index 0000000..67d656b
--- /dev/null
+++ b/queue-4.19/cgroup-add-missing-skcd-no_refcnt-check-in-cgroup_sk.patch
@@ -0,0 +1,34 @@
+From 66445a82dda5d883a57096b7157d80e4cec417e2 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Thu, 13 Aug 2020 20:33:42 +0000
+Subject: cgroup: add missing skcd->no_refcnt check in cgroup_sk_clone()
+
+From: Yang Yingliang <yangyingliang@huawei.com>
+
+Add skcd->no_refcnt check which is missed when backporting
+ad0f75e5f57c ("cgroup: fix cgroup_sk_alloc() for sk_clone_lock()").
+
+This patch is needed in stable-4.9, stable-4.14 and stable-4.19.
+
+Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ kernel/cgroup/cgroup.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
+index 6ae98c714edd6..2a879d34bbe58 100644
+--- a/kernel/cgroup/cgroup.c
++++ b/kernel/cgroup/cgroup.c
+@@ -5957,6 +5957,8 @@ void cgroup_sk_clone(struct sock_cgroup_data *skcd)
+ {
+       /* Socket clone path */
+       if (skcd->val) {
++              if (skcd->no_refcnt)
++                      return;
+               /*
+                * We might be cloning a socket which is left in an empty
+                * cgroup and the cgroup might have already been rmdir'd.
+-- 
+2.25.1
+

diff --git a/queue-4.19/series b/queue-4.19/series
index 80ca8e053be74ab96bf1a5c7c3dfd63ed959de34..d4e705a2f7ba2538e4ce4a75567c9a83a00df3a8 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -1,2 +1,3 @@
 tracepoint-mark-__tracepoint_string-s-__used.patch
 hid-input-fix-devices-that-return-multiple-bytes-in-battery-report.patch
+cgroup-add-missing-skcd-no_refcnt-check-in-cgroup_sk.patch