diff --git a/kernel/bpf/ringbuf.c b/kernel/bpf/ringbuf.c
index 1e4bf2352..eac0026e2 100755
--- a/kernel/bpf/ringbuf.c
+++ b/kernel/bpf/ringbuf.c
@@ -41,9 +41,12 @@ struct bpf_ringbuf {
 	 * mapping consumer page as r/w, but restrict producer page to r/o.
 	 * This protects producer position from being modified by user-space
 	 * application and ruining in-kernel position tracking.
+	 * Note that the pending counter is placed in the same
+	 * page as the producer, so that it shares the same cache line.
 	 */
 	unsigned long consumer_pos __aligned(PAGE_SIZE);
 	unsigned long producer_pos __aligned(PAGE_SIZE);
+	unsigned long pending_pos;
 	char data[] __aligned(PAGE_SIZE);
 };
 
@@ -145,6 +148,7 @@ static struct bpf_ringbuf *bpf_ringbuf_alloc(size_t data_sz, int numa_node)
 	rb->mask = data_sz - 1;
 	rb->consumer_pos = 0;
 	rb->producer_pos = 0;
+	rb->pending_pos = 0;
 
 	return rb;
 }
@@ -323,9 +327,9 @@ bpf_ringbuf_restore_from_rec(struct bpf_ringbuf_hdr *hdr)
 
 static void *__bpf_ringbuf_reserve(struct bpf_ringbuf *rb, u64 size)
 {
-	unsigned long cons_pos, prod_pos, new_prod_pos, flags;
-	u32 len, pg_off;
+	unsigned long cons_pos, prod_pos, new_prod_pos, pend_pos, flags;
 	struct bpf_ringbuf_hdr *hdr;
+	u32 len, pg_off, tmp_size, hdr_len;
 
 	if (unlikely(size > RINGBUF_MAX_RECORD_SZ))
 		return NULL;
@@ -343,13 +347,29 @@ static void *__bpf_ringbuf_reserve(struct bpf_ringbuf *rb, u64 size)
 		spin_lock_irqsave(&rb->spinlock, flags);
 	}
 
+	pend_pos = rb->pending_pos;
 	prod_pos = rb->producer_pos;
 	new_prod_pos = prod_pos + len;
 
-	/* check for out of ringbuf space by ensuring producer position
-	 * doesn't advance more than (ringbuf_size - 1) ahead
+	while (pend_pos < prod_pos) {
+		hdr = (void *)rb->data + (pend_pos & rb->mask);
+		hdr_len = READ_ONCE(hdr->len);
+		if (hdr_len & BPF_RINGBUF_BUSY_BIT)
+			break;
+		tmp_size = hdr_len & ~BPF_RINGBUF_DISCARD_BIT;
+		tmp_size = round_up(tmp_size + BPF_RINGBUF_HDR_SZ, 8);
+		pend_pos += tmp_size;
+	}
+	rb->pending_pos = pend_pos;
+
+	/* check for out of ringbuf space:
+	 * - by ensuring producer position doesn't advance more than
+	 *   (ringbuf_size - 1) ahead
+	 * - by ensuring oldest not yet committed record until newest
+	 *   record does not span more than (ringbuf_size - 1)
 	 */
-	if (new_prod_pos - cons_pos > rb->mask) {
+	if (new_prod_pos - cons_pos > rb->mask ||
+	    new_prod_pos - pend_pos > rb->mask) {
 		spin_unlock_irqrestore(&rb->spinlock, flags);
 		return NULL;
 	}