cls_bpf: use tcf_exts_get_net() before call_rcu()

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Hold netns refcnt before call_rcu() and release it after
the tcf_exts_destroy() is done.

Note, on ->destroy() path we have to respect the return value
of tcf_exts_get_net(), on other paths it should always return
true, so we don't need to care.

Cc: Lucas Bates <lucasb@mojatatu.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Cong Wang 2017-11-06 13:47:21 -08:00 • committed by David S. Miller

parent 0b2a59894b

commit aae2c35ec8

1 changed files with 6 additions and 1 deletions

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net/sched/cls_bpf.c

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