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act_mirred: Fix mirred_init_module error handling 

If tcf_register_action failed, mirred_device_notifier
should be unregistered.

Fixes: 3b87956ea6 ("net sched: fix race in mirred device removal")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
This commit is contained in:
YueHaibing 2019-10-09 11:10:52 +08:00 committed by Jakub Kicinski
parent a954380acd
commit 11c9a7d38a
1 changed files with 5 additions and 1 deletions
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6
net/sched/act_mirred.c
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@ -484,7 +484,11 @@ static int __init mirred_init_module(void)
return err; return err;
pr_info("Mirror/redirect action on\n"); pr_info("Mirror/redirect action on\n");
return tcf_register_action(&act_mirred_ops, &mirred_net_ops); err = tcf_register_action(&act_mirred_ops, &mirred_net_ops);
if (err)
unregister_netdevice_notifier(&mirred_device_notifier);
return err;
} }
static void __exit mirred_cleanup_module(void) static void __exit mirred_cleanup_module(void)