net: sched: fix clsact init error path

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Since in qdisc_create, the destroy op is called when init fails, we
don't do cleanup in init and leave it up to destroy.
This fixes use-after-free when trying to put already freed block.

Fixes: 6e40cf2d4d ("net: sched: use extended variants of block_get/put in ingress and clsact qdiscs")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jiri Pirko 2017-12-15 12:40:12 +01:00 • committed by David S. Miller

parent c05fad5713

commit 343723dd51

2 changed files with 3 additions and 7 deletions

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4

net/sched/cls_api.c

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6

net/sched/sch_ingress.c

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