On 12/21/2017 7:57 AM, Vasyl Gomonovych wrote:
> This patch fixes the warning reported by smatch:
> security/smack/smack_lsm.c:2872 smack_socket_connect() warn:
> variable dereferenced before check 'sock->sk' (see line 2869)
>
> Signed-off-by: Vasyl Gomonovych <[email protected]>

I will take this into the Smack tree. Thank you.

Acked-by: Casey Schaufler <[email protected]>

> ---
>  security/smack/smack_lsm.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
> index 14cc7940b36d..30f2c3d1c11c 100644
> --- a/security/smack/smack_lsm.c
> +++ b/security/smack/smack_lsm.c
> @@ -2866,12 +2866,16 @@ static int smack_socket_connect(struct socket *sock, 
> struct sockaddr *sap,
>  #endif
>  #ifdef SMACK_IPV6_SECMARK_LABELING
>       struct smack_known *rsp;
> -     struct socket_smack *ssp = sock->sk->sk_security;
> +     struct socket_smack *ssp;
>  #endif
>  
>       if (sock->sk == NULL)
>               return 0;
>  
> +#ifdef SMACK_IPV6_SECMARK_LABELING
> +     ssp = sock->sk->sk_security;
> +#endif
> +
>       switch (sock->sk->sk_family) {
>       case PF_INET:
>               if (addrlen < sizeof(struct sockaddr_in))

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