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author | Eli Cohen <elic@nvidia.com> | 2022-01-11 20:33:58 +0200 |
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committer | Michael S. Tsirkin <mst@redhat.com> | 2022-01-14 18:50:54 -0500 |
commit | 680ab9d69a04cfd9f3f5fedaacbc1974b2959121 (patch) | |
tree | 04a34fb7783e0e528b3742b2dafe811e99f186a9 /drivers/vdpa/mlx5 | |
parent | f6d955d80830b6e6f6a170be68cc3628f36365dd (diff) | |
download | linux-680ab9d69a04cfd9f3f5fedaacbc1974b2959121.tar.bz2 |
vdpa: Protect vdpa reset with cf_mutex
Call reset using the wrapper function vdpa_reset() to make sure the
operation is serialized with cf_mutex.
This comes to protect from the following possible scenario:
vhost_vdpa_set_status() could call the reset op. Since the call is not
protected by cf_mutex, a netlink thread calling vdpa_dev_config_fill
could get passed the VIRTIO_CONFIG_S_FEATURES_OK check in
vdpa_dev_config_fill() and end up reporting wrong features.
Fixes: 5f6e85953d8f ("vdpa: Read device configuration only if FEATURES_OK")
Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20220111183400.38418-3-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Si-Wei Liu<si-wei.liu@oracle.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'drivers/vdpa/mlx5')
0 files changed, 0 insertions, 0 deletions