test/mbuf: fix forged mbuf in clone test

The test for cloning changed mbuf would generate an mbuf whose length
and segments count were invalid.
This would cause a crash if test was run with mbuf debugging enabled.

Fixes: 4ccd2bb3a9e2 ("app/test: enhance mbuf refcnt check")
Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index 2a97afe..aafad0c 100644 (file)
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -332,8 +332,11 @@ testclone_testupdate_testdetach(struct rte_mempool *pktmbuf_pool)
        m->next = rte_pktmbuf_alloc(pktmbuf_pool);
        if (m->next == NULL)
                GOTO_FAIL("Next Pkt Null\n");
+       m->nb_segs = 2;
 
        rte_pktmbuf_append(m->next, sizeof(uint32_t));
+       m->pkt_len = 2 * sizeof(uint32_t);
+
        data = rte_pktmbuf_mtod(m->next, unaligned_uint32_t *);
        *data = MAGIC_DATA;