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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2017-11-01 10:23:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-03 10:30:38 +0900 |
| commit | ceffcc5e254b450e6159f173e4538215cebf1b59 (patch) | |
| tree | e774e0c77b5f8a2979794ed08cc93b6365852114 /lib/klist.c | |
| parent | a159d3c4b8291998c018f0dbddd4678315264a1e (diff) | |
net_sched: hold netns refcnt for each action
TC actions have been destroyed asynchronously for a long time,
previously in a RCU callback and now in a workqueue. If we
don't hold a refcnt for its netns, we could use the per netns
data structure, struct tcf_idrinfo, after it has been freed by
netns workqueue.
Hold refcnt to ensure netns destroy happens after all actions
are gone.
Fixes: ddf97ccdd7cb ("net_sched: add network namespace support for tc actions")
Reported-by: Lucas Bates <lucasb@mojatatu.com>
Tested-by: 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>
Diffstat (limited to 'lib/klist.c')
0 files changed, 0 insertions, 0 deletions