From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>,
Chenbo Xia <chenbox@nvidia.com>
Subject: [PATCH] vhost: fix virtqueue access lock check for handlers
Date: Thu, 7 Mar 2024 11:36:24 +0100 [thread overview]
Message-ID: <20240307103624.610080-1-david.marchand@redhat.com> (raw)
As the vhost library may receive a request for an unsupported request,
it is necessary to check msg_handler before checking if locking queue
pairs is requested.
Coverity issue: 415049
Fixes: 5e8fcc60b59d ("vhost: enhance virtqueue access lock asserts")
Signed-off-by: David Marchand <david.marchand@redhat.com>
---
lib/vhost/vhost_user.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/vhost/vhost_user.c b/lib/vhost/vhost_user.c
index 7fe1687f08..414192500e 100644
--- a/lib/vhost/vhost_user.c
+++ b/lib/vhost/vhost_user.c
@@ -3171,7 +3171,7 @@ vhost_user_msg_handler(int vid, int fd)
* inactive, so it is safe. Otherwise taking the access_lock
* would cause a dead lock.
*/
- if (msg_handler->lock_all_qps) {
+ if (msg_handler != NULL && msg_handler->lock_all_qps) {
if (!(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED)) {
vhost_user_lock_all_queue_pairs(dev);
unlock_required = 1;
--
2.44.0
next reply other threads:[~2024-03-07 10:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-07 10:36 David Marchand [this message]
2024-03-07 14:20 ` Kevin Traynor
2024-03-11 10:42 ` Maxime Coquelin
2024-03-13 14:46 ` David Marchand
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