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net: sched: fix possible refcount leak in tc_new_tfilter()

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[ Upstream commit c2e1cfefca ]

tfilter_put need to be called to put the refount got by tp->ops->get to
avoid possible refcount leak when chain->tmplt_ops != NULL and
chain->tmplt_ops != tp->ops.

Fixes: 7d5509fa0d ("net: sched: extend proto ops with 'put' callback")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Link: https://lore.kernel.org/r/20220921092734.31700-1-hbh25y@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hangyu Hua 2022-09-21 17:27:34 +08:00 • committed by Justin Hammond
parent a884902fae
commit 1a704a48f2
1 changed files with 1 additions and 0 deletions
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1
net/sched/cls_api.c
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@ -2117,6 +2117,7 @@ replay:
}
if (chain->tmplt_ops && chain->tmplt_ops != tp->ops) {
tfilter_put(tp, fh);
NL_SET_ERR_MSG(extack, "Chain template is set to a different filter kind");
err = -EINVAL;
goto errout;