From: Li Feng <fengli@smartx.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
Chenbo Xia <chenbo.xia@intel.com>
Cc: dev@dpdk.org, Li Feng <fengli@smartx.com>
Subject: [dpdk-dev] [PATCH v1] vhost: add sanity check for resubmiting reqs in split ring
Date: Fri, 27 Aug 2021 13:12:41 +0800 [thread overview]
Message-ID: <20210827051241.2448098-1-fengli@smartx.com> (raw)
When getting reqs from the avail ring, the id may exceed inflight
queue size. Then the dpdk will crash forever.
Signed-off-by: Li Feng <fengli@smartx.com>
---
lib/vhost/vhost_user.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
index 29a4c9af60..f09d0f6a48 100644
--- a/lib/vhost/vhost_user.c
+++ b/lib/vhost/vhost_user.c
@@ -1823,8 +1823,14 @@ vhost_check_queue_inflights_split(struct virtio_net *dev,
last_io = inflight_split->last_inflight_io;
if (inflight_split->used_idx != used->idx) {
- inflight_split->desc[last_io].inflight = 0;
- rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
+ if (unlikely(last_io >= inflight_split->desc_num)) {
+ VHOST_LOG_CONFIG(ERR, "last_inflight_io '%"PRIu16"' exceeds inflight "
+ "queue size (%"PRIu16").\n", last_io,
+ inflight_split->desc_num);
+ } else {
+ inflight_split->desc[last_io].inflight = 0;
+ rte_atomic_thread_fence(__ATOMIC_SEQ_CST);
+ }
inflight_split->used_idx = used->idx;
}
--
2.31.1
next reply other threads:[~2021-08-27 5:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 5:12 Li Feng [this message]
2021-09-01 5:01 ` Li Feng
2021-10-14 8:17 ` Maxime Coquelin
2021-10-14 8:25 ` Maxime Coquelin
2021-10-14 8:28 ` Xia, Chenbo
2021-10-18 1:01 ` Liu, Changpeng
2021-10-14 11:25 ` Li Feng
2021-10-14 11:38 ` Maxime Coquelin
2021-10-14 11:54 ` Li Feng
2021-10-14 12:40 ` [dpdk-dev] [PATCH v2] vhost: add sanity check when operating the " Li Feng
2021-10-15 8:51 ` Maxime Coquelin
2021-10-15 9:25 ` Li Feng
2021-10-21 12:32 ` Maxime Coquelin
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