From 8f3f330da28ede9d106cd9d5c5ccd6a3e7e9b50b Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Fri, 31 Jul 2020 00:17:20 -0400 Subject: [PATCH] tun: add missing rcu annotation in tun_set_ebpf() We expecte prog_p to be protected by rcu, so adding the rcu annotation to fix the following sparse warning: 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 ** Reported-by: Michael S. Tsirkin Signed-off-by: Jason Wang Signed-off-by: David S. Miller --- drivers/net/tun.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 7adeb91bd368..9b4b25358f9b 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2983,7 +2983,7 @@ static int tun_set_queue(struct file *file, struct ifreq *ifr) return ret; } -static int tun_set_ebpf(struct tun_struct *tun, struct tun_prog **prog_p, +static int tun_set_ebpf(struct tun_struct *tun, struct tun_prog __rcu **prog_p, void __user *data) { struct bpf_prog *prog;