From 8639e5c52c010233ee0068a4ab90b2d8084b4ba1 Mon Sep 17 00:00:00 2001 From: Nathan Skrzypczak Date: Fri, 11 Feb 2022 11:19:58 +0100 Subject: [PATCH] memif: Fix underflow Type: fix Change-Id: Id183c47328510b5db7ffcc7a4dfb41f5a3151399 Signed-off-by: Nathan Skrzypczak (cherry picked from commit 1b969c2f6a181d4f7cca542dad00e4feb1e45650) --- src/plugins/memif/node.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/plugins/memif/node.c b/src/plugins/memif/node.c index 1f636f2b3a2..5bb10fc6eec 100644 --- a/src/plugins/memif/node.c +++ b/src/plugins/memif/node.c @@ -557,7 +557,7 @@ memif_device_input_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_get_buffers (vm, ptd->buffers, buffer_ptrs, n_buffers); - for (i = 0; i < n_pkts - 8; i++) + for (i = 0; i + 8 < n_pkts; i++) { clib_prefetch_load (desc_data[i + 8]); clib_prefetch_store (buffer_ptrs[i + 8]->data); @@ -574,7 +574,7 @@ memif_device_input_inline (vlib_main_t *vm, vlib_node_runtime_t *node, u32 n_pkts = vec_len (ptd->copy_ops); co = ptd->copy_ops; - for (i = 0; i < n_pkts - 8; i++) + for (i = 0; i + 8 < n_pkts; i++) { clib_prefetch_load (co[i + 8].data); b = vlib_get_buffer (vm, ptd->buffers[co[i].buffer_vec_index]); -- 2.16.6