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AUDIT: Honour audit_backlog_limit again.
The limit on the number of outstanding audit messages was inadvertently removed with the switch to queuing skbs directly for sending by a kernel thread. Put it back again. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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@ -613,6 +613,18 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, int type)
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if (!audit_initialized)
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return NULL;
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if (audit_backlog_limit
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&& skb_queue_len(&audit_skb_queue) > audit_backlog_limit) {
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if (audit_rate_check())
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printk(KERN_WARNING
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"audit: audit_backlog=%d > "
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"audit_backlog_limit=%d\n",
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skb_queue_len(&audit_skb_queue),
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audit_backlog_limit);
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audit_log_lost("backlog limit exceeded");
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return NULL;
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}
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ab = audit_buffer_alloc(ctx, GFP_ATOMIC, type);
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if (!ab) {
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audit_log_lost("out of memory in audit_log_start");
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