From: David Marchand <david.marchand@6wind.com>
To: dev@dpdk.org
Cc: olivier.matz@6wind.com, wenzhuo.lu@intel.com,
jingjing.wu@intel.com, bernard.iremonger@intel.com
Subject: [dpdk-dev] [PATCH 1/3] mbuf: add sanity checks on segment metadata
Date: Mon, 10 Sep 2018 07:45:45 +0200 [thread overview]
Message-ID: <20180910054547.18494-2-david.marchand@6wind.com> (raw)
In-Reply-To: <20180910054547.18494-1-david.marchand@6wind.com>
Add some basic checks on the segments offset and length metadata:
always funny to have a < 0 tailroom cast to uint16_t ;-).
Signed-off-by: David Marchand <david.marchand@6wind.com>
---
lib/librte_mbuf/rte_mbuf.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index e714c5a59..137a320ed 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -200,6 +200,11 @@ rte_mbuf_sanity_check(const struct rte_mbuf *m, int is_header)
pkt_len = m->pkt_len;
do {
+ if (m->data_off > m->buf_len)
+ rte_panic("data offset too big in mbuf segment\n");
+ if ((uint32_t)m->data_off + (uint32_t)m->data_len >
+ (uint32_t)m->buf_len)
+ rte_panic("data length too big in mbuf segment\n");
nb_segs -= 1;
pkt_len -= m->data_len;
} while ((m = m->next) != NULL);
--
2.17.1
next prev parent reply other threads:[~2018-09-10 5:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-10 5:45 [dpdk-dev] [PATCH 0/3] segment sanity checks David Marchand
2018-09-10 5:45 ` David Marchand [this message]
2018-09-11 18:16 ` [dpdk-dev] [PATCH 1/3] mbuf: add sanity checks on segment metadata Yongseok Koh
2018-09-13 6:55 ` David Marchand
2018-10-09 9:11 ` Olivier Matz
2018-09-10 5:45 ` [dpdk-dev] [PATCH 2/3] mbuf: add a non fatal sanity check helper David Marchand
2018-09-10 5:56 ` David Marchand
2018-09-10 8:12 ` Andrew Rybchenko
2018-09-10 8:24 ` David Marchand
2018-09-10 8:33 ` Andrew Rybchenko
2018-10-09 9:10 ` Olivier Matz
2018-09-10 5:45 ` [dpdk-dev] [PATCH 3/3] app/testpmd: add sanity checks on received/sent packets David Marchand
2018-09-25 13:17 ` Iremonger, Bernard
2018-09-25 15:11 ` David Marchand
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