netdev - [PATCH 0/2] vhost-vdpa: fix issues around v->config

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Message-Id: <20210311135257.109460-1-sgarzare@redhat.com>
Date:   Thu, 11 Mar 2021 14:52:55 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     virtualization@...ts.linux-foundation.org
Cc:     Jason Wang <jasowang@...hat.com>, netdev@...r.kernel.org,
        Zhu Lingshan <lingshan.zhu@...el.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: [PATCH 0/2] vhost-vdpa: fix issues around v->config_ctx handling

While writing a test for a Rust library [1] to handle vhost-vdpa devices,
I experienced the 'use-after-free' issue fixed in patch 1, then I
discovered the potential issue when eventfd_ctx_fdget() fails fixed in
patch 2.

Do you think it might be useful to write a vdpa test suite, perhaps using
this Rust library [2] ?
Could we put it in the kernel tree in tool/testing?

Thanks,
Stefano

[1] https://github.com/stefano-garzarella/vhost/tree/vdpa
[2] https://github.com/rust-vmm/vhost

Stefano Garzarella (2):
  vhost-vdpa: fix use-after-free of v->config_ctx
  vhost-vdpa: set v->config_ctx to NULL if eventfd_ctx_fdget() fails

 drivers/vhost/vdpa.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

-- 
2.29.2