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-rw-r--r--kernel/acct.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/acct.c b/kernel/acct.c
index 87773725a0dc..08963a292878 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -241,6 +241,8 @@ static int acct_on(struct filename *pathname)
return 0;
}
+static DEFINE_MUTEX(acct_on_mutex);
+
/**
* sys_acct - enable/disable process accounting
* @name: file name for accounting records or NULL to shutdown accounting
@@ -263,7 +265,9 @@ SYSCALL_DEFINE1(acct, const char __user *, name)
struct filename *tmp = getname(name);
if (IS_ERR(tmp))
return PTR_ERR(tmp);
+ mutex_lock(&acct_on_mutex);
error = acct_on(tmp);
+ mutex_unlock(&acct_on_mutex);
putname(tmp);
} else {
struct bsd_acct_struct *acct;