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vdpa_sim_blk: Fix the potential leak of mgmt_dev

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If the shared_buffer allocation fails, need to unregister mgmt_dev first.

Cc: stable@vger.kernel.org
Fixes: abebb16254 ("vdpa_sim_blk: support shared backend")
Signed-off-by: Shawn.Shao <shawn.shao@jaguarmicro.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230821060333.1155-1-shawn.shao@jaguarmicro.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Shawn.Shao 2023-08-21 14:03:33 +08:00 committed by Michael S. Tsirkin
parent e07744b43d
commit d121df789b
1 changed files with 3 additions and 2 deletions
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5
drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
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@ -499,12 +499,13 @@ static int __init vdpasim_blk_init(void)
GFP_KERNEL);
if (!shared_buffer) {
ret = -ENOMEM;
goto parent_err;
goto mgmt_dev_err;
}
}
return 0;
mgmt_dev_err:
vdpa_mgmtdev_unregister(&mgmt_dev);
parent_err:
device_unregister(&vdpasim_blk_mgmtdev);
return ret;