[PATCH] kernel: acct: kfree, also set related variable to NULL afterkfree

[Chen Gang]

  after kfree acct, also set ns->bacct to NULL.

Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
---
 kernel/acct.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/acct.c b/kernel/acct.c
index 85389fe..91a23eb 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -332,6 +332,7 @@ void acct_exit_ns(struct pid_namespace *ns)
 	spin_lock(&acct_lock);
 	if (acct->file != NULL)
 		acct_file_reopen(acct, NULL, NULL);
+	ns->bacct = NULL;
 	spin_unlock(&acct_lock);
 
 	kfree(acct);
-- 
1.7.7.6
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