3 files changed, 20 insertions, 3 deletions

diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 3c3c50f..f7a7f83 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -644,7 +644,22 @@ gss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
 	p = gss_fill_context(p, end, ctx, gss_msg->auth->mech);
 	if (IS_ERR(p)) {
 		err = PTR_ERR(p);
-		gss_msg->msg.errno = (err == -EAGAIN) ? -EAGAIN : -EACCES;
+		switch (err) {
+		case -EACCES:
+			gss_msg->msg.errno = err;
+			err = mlen;
+			break;
+		case -EFAULT:
+		case -ENOMEM:
+		case -EINVAL:
+		case -ENOSYS:
+			gss_msg->msg.errno = -EAGAIN;
+			break;
+		default:
+			printk(KERN_CRIT "%s: bad return from "
+				"gss_fill_context: %zd\n", __func__, err);
+			BUG();
+		}
 		goto err_release_msg;
 	}
 	gss_msg->ctx = gss_get_ctx(ctx);
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c
index ef45eba..2deb0ed 100644
--- a/net/sunrpc/auth_gss/gss_krb5_mech.c
+++ b/net/sunrpc/auth_gss/gss_krb5_mech.c
@@ -131,8 +131,10 @@ gss_import_sec_context_kerberos(const void *p,
 	struct	krb5_ctx *ctx;
 	int tmp;
 
-	if (!(ctx = kzalloc(sizeof(*ctx), GFP_NOFS)))
+	if (!(ctx = kzalloc(sizeof(*ctx), GFP_NOFS))) {
+		p = ERR_PTR(-ENOMEM);
 		goto out_err;
+	}
 
 	p = simple_get_bytes(p, end, &ctx->initiate, sizeof(ctx->initiate));
 	if (IS_ERR(p))
diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c
index 6efbb0c..76e4c6f 100644
--- a/net/sunrpc/auth_gss/gss_mech_switch.c
+++ b/net/sunrpc/auth_gss/gss_mech_switch.c
@@ -252,7 +252,7 @@ gss_import_sec_context(const void *input_token, size_t bufsize,
 		       struct gss_ctx		**ctx_id)
 {
 	if (!(*ctx_id = kzalloc(sizeof(**ctx_id), GFP_KERNEL)))
-		return GSS_S_FAILURE;
+		return -ENOMEM;
 	(*ctx_id)->mech_type = gss_mech_get(mech);
 
 	return mech->gm_ops