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@@ -241,6 +241,8 @@ static int acct_on(struct filename *pathname)
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return 0;
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}
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+static DEFINE_MUTEX(acct_on_mutex);
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+
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/**
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* sys_acct - enable/disable process accounting
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* @name: file name for accounting records or NULL to shutdown accounting
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@@ -263,7 +265,9 @@ SYSCALL_DEFINE1(acct, const char __user *, name)
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struct filename *tmp = getname(name);
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if (IS_ERR(tmp))
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return PTR_ERR(tmp);
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+ mutex_lock(&acct_on_mutex);
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error = acct_on(tmp);
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+ mutex_unlock(&acct_on_mutex);
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putname(tmp);
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} else {
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struct bsd_acct_struct *acct;
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