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Date: Fri, 31 Jul 2020 12:09:45 +0800 From: Jason Wang <jasowang@...hat.com> To: "Michael S. Tsirkin" <mst@...hat.com>, netdev@...r.kernel.org Subject: Re: rcu warnings in tun On 2020/7/31 上午4:16, Michael S. Tsirkin wrote: > drivers/net/tun.c:3003:36: warning: incorrect type in argument 2 (different address spaces) > drivers/net/tun.c:3003:36: expected struct tun_prog [noderef] __rcu **prog_p > drivers/net/tun.c:3003:36: got struct tun_prog **prog_p > drivers/net/tun.c:3292:42: warning: incorrect type in argument 2 (different address spaces) > drivers/net/tun.c:3292:42: expected struct tun_prog **prog_p > drivers/net/tun.c:3292:42: got struct tun_prog [noderef] __rcu ** > drivers/net/tun.c:3296:42: warning: incorrect type in argument 2 (different address spaces) > drivers/net/tun.c:3296:42: expected struct tun_prog **prog_p > drivers/net/tun.c:3296:42: got struct tun_prog [noderef] __rcu ** prog_p in tun_set_bpf() should be protected by RCU, will post a fix. Thanks
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