if (md5cksum.data) kfree(md5cksum.data); 
kfree(md5cksum.data); 
spkm3_make_token(struct spkm3_ctx *ctx,		   struct xdr_buf * text, struct xdr_netobj * token,		   int toktype){	s32			checksum_type;	char			tokhdrbuf[25];	struct xdr_netobj	md5cksum = {.len = 0, .data = NULL};	struct xdr_netobj	mic_hdr = {.len = 0, .data = tokhdrbuf};	int			tmsglen, tokenlen = 0;	unsigned char		*ptr;	s32			now;	int			ctxelen = 0, ctxzbit = 0;	int			md5elen = 0, md5zbit = 0;	dprintk("RPC: spkm3_make_token\n");	now = jiffies;	if (ctx->ctx_id.len != 16) {		dprintk("RPC: spkm3_make_token BAD ctx_id.len %d\n",			ctx->ctx_id.len);		goto out_err;	}			switch (ctx->intg_alg) {		case NID_md5:			checksum_type = CKSUMTYPE_RSA_MD5;			break;		default:			dprintk("RPC: gss_spkm3_seal: ctx->signalg %d not"				" supported\n", ctx->intg_alg);			goto out_err;	}	/* XXX since we don't support WRAP, perhaps we don't care... */	if (ctx->conf_alg != NID_cast5_cbc) {		dprintk("RPC: gss_spkm3_seal: ctx->sealalg %d not supported\n",			ctx->conf_alg);		goto out_err;	}	if (toktype == SPKM_MIC_TOK) {		tmsglen = 0;		/* Calculate checksum over the mic-header */		asn1_bitstring_len(&ctx->ctx_id, &ctxelen, &ctxzbit);		spkm3_mic_header(&mic_hdr.data, &mic_hdr.len, ctx->ctx_id.data,		                         ctxelen, ctxzbit);		if (make_checksum(checksum_type, mic_hdr.data, mic_hdr.len, 		                             text, &md5cksum))			goto out_err;		asn1_bitstring_len(&md5cksum, &md5elen, &md5zbit);		tokenlen = 10 + ctxelen + 1 + 2 + md5elen + 1;		/* Create token header using generic routines */		token->len = g_token_size(&ctx->mech_used, tokenlen + tmsglen);		ptr = token->data;		g_make_token_header(&ctx->mech_used, tokenlen + tmsglen, &ptr);		spkm3_make_mic_token(&ptr, tokenlen, &mic_hdr, &md5cksum, md5elen, md5zbit);	} else if (toktype == SPKM_WRAP_TOK) { /* Not Supported */		dprintk("RPC: gss_spkm3_seal: SPKM_WRAP_TOK not supported\n");		goto out_err;	}	kfree(md5cksum.data);	/* XXX need to implement sequence numbers, and ctx->expired */	return  GSS_S_COMPLETE;out_err:	if (md5cksum.data) 		kfree(md5cksum.data);	token->data = NULL;	token->len = 0;	return GSS_S_FAILURE;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/a51482bde22f99c63fbbb57d5d46cc666384e379/gss_spkm3_seal.c/buggy/net/sunrpc/auth_gss/gss_spkm3_seal.c