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xfrm: fix netdev reference count imbalance

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[ Upstream commit 9199b915e9fad7f5eff6160d24ff6b38e970107d ]

In cited commit, netdev_tracker_alloc() is called for the newly
allocated xfrm state, but dev_hold() is missed, which causes netdev
reference count imbalance, because netdev_put() is called when the
state is freed in xfrm_dev_state_free(). Fix the issue by replacing
netdev_tracker_alloc() with netdev_hold().

Fixes: f8a70afafc ("xfrm: add TX datapath support for IPsec packet offload mode")
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jianbo Liu 2024-07-08 09:58:11 +03:00 • committed by Greg Kroah-Hartman
parent 7a0edc3d83
commit 0c92f09017
1 changed files with 1 additions and 2 deletions
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3
net/xfrm/xfrm_state.c
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@ -1331,8 +1331,7 @@ found:
xso->dev = xdo->dev;
xso->real_dev = xdo->real_dev;
xso->flags = XFRM_DEV_OFFLOAD_FLAG_ACQ;
netdev_tracker_alloc(xso->dev, &xso->dev_tracker,
GFP_ATOMIC);
netdev_hold(xso->dev, &xso->dev_tracker, GFP_ATOMIC);
error = xso->dev->xfrmdev_ops->xdo_dev_state_add(x, NULL);
if (error) {
xso->dir = 0;