[dpdk-dev] [PATCH] librte_port: fix the buffer overflow for ring writer

[Thomas Monjalon]

2016-04-11 18:55, Jasvinder Singh:
> Fixes the buffer overflow that occurs due to following;
> 
> 1. When the input packet burst does not meet the conditions: (a) being
> contiguous (first n bits set in pkts_mask, all the other bits cleared)
> and (b) containing a full burst, i.e. at least tx_burst_sz packets
> (n >= tx_burst_size). This is the slow(er) code path taken when local
> variable expr != 0.
> 2. There are some packets already in the buffer.
> 3. The number of packets in the incoming burst (i.e. popcount(pkts_mask))
> plus the number of packets already in the buffer exceeds the buffer size
> (RTE_PORT_IN_BURST_SIZE_MAX, i.e. 64).
> 
> Fixes: bf6931b242f7 ("port: ring")
> Fixes: 5f4cd47309d6 ("port: add ring writer nodrop")
> 
> Signed-off-by: Jasvinder Singh <jasvinder.singh at intel.com>
> Acked-by: Cristian Dumitrescu <cristian.dumitrescu at intel.com>

Applied, thanks