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Date: Tue, 5 Jan 2021 14:24:13 +0200 From: Yuri Benditovich <yuri.benditovich@...nix.com> To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>, John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org> Cc: yan@...nix.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, bpf@...r.kernel.org Subject: [RFC PATCH 4/7] tun: free bpf_program by bpf_prog_put instead of bpf_prog_destroy The module never creates the bpf program with bpf_prog_create so it shouldn't free it with bpf_prog_destroy. The program is obtained by bpf_prog_get and should be freed by bpf_prog_put. For BPF_PROG_TYPE_SOCKET_FILTER both methods do the same but for other program types they don't. Signed-off-by: Yuri Benditovich <yuri.benditovich@...nix.com> --- 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 455f7afc1f36..18c1baf1a6c1 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -2218,7 +2218,7 @@ static void tun_prog_free(struct rcu_head *rcu) { struct tun_prog *prog = container_of(rcu, struct tun_prog, rcu); - bpf_prog_destroy(prog->prog); + bpf_prog_put(prog->prog); kfree(prog); } -- 2.17.1
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