Looks like issue in handling active_nodes count in 4.19 kernel

[Ravi Kumar Siddojigari]

Thanks for correcting , Adding the signoff of orginal author in the 
following commit .

>From 6308b405e2097ab9d82c5a3894815daf7331e0b6 Mon Sep 17 00:00:00 2001
From: Jaihind Yadav <jaihindyadav at codeaurora.org>
Date: Tue, 17 Dec 2019 17:25:47 +0530
Subject: [PATCH] selinux: ensure we cleanup the internal AVC counters on error
 in avc_update()
To: rsiddoji at codeaurora.org

In AVC update we don't call avc_node_kill() when avc_xperms_populate()
fails, resulting in the avc->avc_cache.active_nodes counter having a
false value.In last patch this changes was missed , so correcting it.


Signed-off-by: Jaihind Yadav <jaihindyadav at codeaurora.org>
Signed-off-by: Ravi Kumar Siddojigari <rsiddoji at codeaurora.org>
---
 security/selinux/avc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index ecd3829996aa..9c69e83834b0 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -907,7 +907,7 @@ static int avc_update_node(struct selinux_avc *avc,
        if (orig->ae.xp_node) {
                rc = avc_xperms_populate(node, orig->ae.xp_node);
                if (rc) {
-                       kmem_cache_free(avc_node_cachep, node);
+                       avc_node_kill(avc, node);
                        goto out_unlock;
                }
        }
--
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